Synchronised line endinge with release branch

5 files changed, 4700 insertions, 4700 deletions

diff --git a/mesalib/src/mesa/drivers/dri/common/dri_util.c b/mesalib/src/mesa/drivers/dri/common/dri_util.c
index adc6716c6..6d6401934 100644
--- a/mesalib/src/mesa/drivers/dri/common/dri_util.c
+++ b/mesalib/src/mesa/drivers/dri/common/dri_util.c
@@ -1,1040 +1,1040 @@
-/**

- * \file dri_util.c

- * DRI utility functions.

- *

- * This module acts as glue between GLX and the actual hardware driver.  A DRI

- * driver doesn't really \e have to use any of this - it's optional.  But, some

- * useful stuff is done here that otherwise would have to be duplicated in most

- * drivers.

- * 

- * Basically, these utility functions take care of some of the dirty details of

- * screen initialization, context creation, context binding, DRM setup, etc.

- *

- * These functions are compiled into each DRI driver so libGL.so knows nothing

- * about them.

- */

-

-

-#include <assert.h>

-#include <stdarg.h>

-#include <unistd.h>

-#include <sys/mman.h>

-#include <stdio.h>

-

-#ifndef MAP_FAILED

-#define MAP_FAILED ((void *)-1)

-#endif

-

-#include "main/imports.h"

-#define None 0

-

-#include "dri_util.h"

-#include "drm_sarea.h"

-#include "utils.h"

-#include "xmlpool.h"

-#include "../glsl/glsl_parser_extras.h"

-

-PUBLIC const char __dri2ConfigOptions[] =

-   DRI_CONF_BEGIN

-      DRI_CONF_SECTION_PERFORMANCE

-         DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1)

-      DRI_CONF_SECTION_END

-   DRI_CONF_END;

-

-static const uint __dri2NConfigOptions = 1;

-

-#ifndef GLX_OML_sync_control

-typedef GLboolean ( * PFNGLXGETMSCRATEOMLPROC) (__DRIdrawable *drawable, int32_t *numerator, int32_t *denominator);

-#endif

-

-static void dri_get_drawable(__DRIdrawable *pdp);

-static void dri_put_drawable(__DRIdrawable *pdp);

-

-/**

- * This is just a token extension used to signal that the driver

- * supports setting a read drawable.

- */

-const __DRIextension driReadDrawableExtension = {

-    __DRI_READ_DRAWABLE, __DRI_READ_DRAWABLE_VERSION

-};

-

-GLint

-driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 )

-{

-   if (rect2.x1 > rect1.x1) rect1.x1 = rect2.x1;

-   if (rect2.x2 < rect1.x2) rect1.x2 = rect2.x2;

-   if (rect2.y1 > rect1.y1) rect1.y1 = rect2.y1;

-   if (rect2.y2 < rect1.y2) rect1.y2 = rect2.y2;

-

-   if (rect1.x1 > rect1.x2 || rect1.y1 > rect1.y2) return 0;

-

-   return (rect1.x2 - rect1.x1) * (rect1.y2 - rect1.y1);

-}

-

-/*****************************************************************/

-/** \name Context (un)binding functions                          */

-/*****************************************************************/

-/*@{*/

-

-/**

- * Unbind context.

- * 

- * \param scrn the screen.

- * \param gc context.

- *

- * \return \c GL_TRUE on success, or \c GL_FALSE on failure.

- * 

- * \internal

- * This function calls __DriverAPIRec::UnbindContext, and then decrements

- * __DRIdrawableRec::refcount which must be non-zero for a successful

- * return.

- * 

- * While casting the opaque private pointers associated with the parameters

- * into their respective real types it also assures they are not \c NULL. 

- */

-static int driUnbindContext(__DRIcontext *pcp)

-{

-    __DRIscreen *psp;

-    __DRIdrawable *pdp;

-    __DRIdrawable *prp;

-

-    /*

-    ** Assume error checking is done properly in glXMakeCurrent before

-    ** calling driUnbindContext.

-    */

-

-    if (pcp == NULL)

-        return GL_FALSE;

-

-    psp = pcp->driScreenPriv;

-    pdp = pcp->driDrawablePriv;

-    prp = pcp->driReadablePriv;

-

-    /* already unbound */

-    if (!pdp && !prp)

-      return GL_TRUE;

-    /* Let driver unbind drawable from context */

-    (*psp->DriverAPI.UnbindContext)(pcp);

-

-    assert(pdp);

-    if (pdp->refcount == 0) {

-	/* ERROR!!! */

-	return GL_FALSE;

-    }

-

-    dri_put_drawable(pdp);

-

-    if (prp != pdp) {

-        if (prp->refcount == 0) {

-	    /* ERROR!!! */

-	    return GL_FALSE;

-	}

-

-    	dri_put_drawable(prp);

-    }

-

-

-    /* XXX this is disabled so that if we call SwapBuffers on an unbound

-     * window we can determine the last context bound to the window and

-     * use that context's lock. (BrianP, 2-Dec-2000)

-     */

-    pcp->driDrawablePriv = pcp->driReadablePriv = NULL;

-

-    return GL_TRUE;

-}

-

-/**

- * This function takes both a read buffer and a draw buffer.  This is needed

- * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent

- * function.

- */

-static int driBindContext(__DRIcontext *pcp,

-			  __DRIdrawable *pdp,

-			  __DRIdrawable *prp)

-{

-    __DRIscreen *psp = NULL;

-

-    /*

-    ** Assume error checking is done properly in glXMakeCurrent before

-    ** calling driUnbindContext.

-    */

-

-    if (!pcp)

-	return GL_FALSE;

-

-    /* Bind the drawable to the context */

-    psp = pcp->driScreenPriv;

-    pcp->driDrawablePriv = pdp;

-    pcp->driReadablePriv = prp;

-    if (pdp) {

-	pdp->driContextPriv = pcp;

-	dri_get_drawable(pdp);

-    }

-    if (prp && pdp != prp) {

-	dri_get_drawable(prp);

-    }

-

-    /*

-    ** Now that we have a context associated with this drawable, we can

-    ** initialize the drawable information if has not been done before.

-    */

-

-    if (!psp->dri2.enabled) {

-	if (pdp && !pdp->pStamp) {

-	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

-	    __driUtilUpdateDrawableInfo(pdp);

-	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

-	}

-	if (prp && pdp != prp && !prp->pStamp) {

-	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

-	    __driUtilUpdateDrawableInfo(prp);

-	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

-        }

-    }

-

-    /* Call device-specific MakeCurrent */

-    return (*psp->DriverAPI.MakeCurrent)(pcp, pdp, prp);

-}

-

-/*@}*/

-

-

-/*****************************************************************/

-/** \name Drawable handling functions                            */

-/*****************************************************************/

-/*@{*/

-

-/**

- * Update private drawable information.

- *

- * \param pdp pointer to the private drawable information to update.

- * 

- * This function basically updates the __DRIdrawable struct's

- * cliprect information by calling \c __DRIinterfaceMethods::getDrawableInfo.

- * This is usually called by the DRI_VALIDATE_DRAWABLE_INFO macro which

- * compares the __DRIdrwablePrivate pStamp and lastStamp values.  If

- * the values are different that means we have to update the clipping

- * info.

- */

-void

-__driUtilUpdateDrawableInfo(__DRIdrawable *pdp)

-{

-    __DRIscreen *psp = pdp->driScreenPriv;

-    __DRIcontext *pcp = pdp->driContextPriv;

-    

-    if (!pcp 

-	|| ((pdp != pcp->driDrawablePriv) && (pdp != pcp->driReadablePriv))) {

-	/* ERROR!!! 

-	 * ...but we must ignore it. There can be many contexts bound to a

-	 * drawable.

-	 */

-    }

-

-    if (pdp->pClipRects) {

-	free(pdp->pClipRects); 

-	pdp->pClipRects = NULL;

-    }

-

-    if (pdp->pBackClipRects) {

-	free(pdp->pBackClipRects); 

-	pdp->pBackClipRects = NULL;

-    }

-

-    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

-

-    if (! (*psp->getDrawableInfo->getDrawableInfo)(pdp,

-			  &pdp->index, &pdp->lastStamp,

-			  &pdp->x, &pdp->y, &pdp->w, &pdp->h,

-			  &pdp->numClipRects, &pdp->pClipRects,

-			  &pdp->backX,

-			  &pdp->backY,

-			  &pdp->numBackClipRects,

-			  &pdp->pBackClipRects,

-			  pdp->loaderPrivate)) {

-	/* Error -- eg the window may have been destroyed.  Keep going

-	 * with no cliprects.

-	 */

-        pdp->pStamp = &pdp->lastStamp; /* prevent endless loop */

-	pdp->numClipRects = 0;

-	pdp->pClipRects = NULL;

-	pdp->numBackClipRects = 0;

-	pdp->pBackClipRects = NULL;

-    }

-    else

-       pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);

-

-    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

-}

-

-/*@}*/

-

-/*****************************************************************/

-/** \name GLX callbacks                                          */

-/*****************************************************************/

-/*@{*/

-

-static void driReportDamage(__DRIdrawable *pdp,

-			    struct drm_clip_rect *pClipRects, int numClipRects)

-{

-    __DRIscreen *psp = pdp->driScreenPriv;

-

-    /* Check that we actually have the new damage report method */

-    if (psp->damage) {

-	/* Report the damage.  Currently, all our drivers draw

-	 * directly to the front buffer, so we report the damage there

-	 * rather than to the backing storein (if any).

-	 */

-	(*psp->damage->reportDamage)(pdp,

-				     pdp->x, pdp->y,

-				     pClipRects, numClipRects,

-				     GL_TRUE, pdp->loaderPrivate);

-    }

-}

-

-

-/**

- * Swap buffers.

- *

- * \param drawablePrivate opaque pointer to the per-drawable private info.

- * 

- * \internal

- * This function calls __DRIdrawable::swapBuffers.

- * 

- * Is called directly from glXSwapBuffers().

- */

-static void driSwapBuffers(__DRIdrawable *dPriv)

-{

-    __DRIscreen *psp = dPriv->driScreenPriv;

-    drm_clip_rect_t *rects;

-    int i;

-

-    psp->DriverAPI.SwapBuffers(dPriv);

-

-    if (!dPriv->numClipRects)

-        return;

-

-    rects = malloc(sizeof(*rects) * dPriv->numClipRects);

-

-    if (!rects)

-        return;

-

-    for (i = 0; i < dPriv->numClipRects; i++) {

-        rects[i].x1 = dPriv->pClipRects[i].x1 - dPriv->x;

-        rects[i].y1 = dPriv->pClipRects[i].y1 - dPriv->y;

-        rects[i].x2 = dPriv->pClipRects[i].x2 - dPriv->x;

-        rects[i].y2 = dPriv->pClipRects[i].y2 - dPriv->y;

-    }

-

-    driReportDamage(dPriv, rects, dPriv->numClipRects);

-    free(rects);

-}

-

-static int driDrawableGetMSC( __DRIscreen *sPriv, __DRIdrawable *dPriv,

-			      int64_t *msc )

-{

-    return sPriv->DriverAPI.GetDrawableMSC(sPriv, dPriv, msc);

-}

-

-

-static int driWaitForMSC(__DRIdrawable *dPriv, int64_t target_msc,

-			 int64_t divisor, int64_t remainder,

-			 int64_t * msc, int64_t * sbc)

-{

-    __DRIswapInfo  sInfo;

-    int  status;

-

-    status = dPriv->driScreenPriv->DriverAPI.WaitForMSC( dPriv, target_msc,

-                                                         divisor, remainder,

-                                                         msc );

-

-    /* GetSwapInfo() may not be provided by the driver if GLX_SGI_video_sync

-     * is supported but GLX_OML_sync_control is not.  Therefore, don't return

-     * an error value if GetSwapInfo() is not implemented.

-    */

-    if ( status == 0

-         && dPriv->driScreenPriv->DriverAPI.GetSwapInfo ) {

-        status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );

-        *sbc = sInfo.swap_count;

-    }

-

-    return status;

-}

-

-

-const __DRImediaStreamCounterExtension driMediaStreamCounterExtension = {

-    { __DRI_MEDIA_STREAM_COUNTER, __DRI_MEDIA_STREAM_COUNTER_VERSION },

-    driWaitForMSC,

-    driDrawableGetMSC,

-};

-

-

-static void driCopySubBuffer(__DRIdrawable *dPriv,

-			      int x, int y, int w, int h)

-{

-    drm_clip_rect_t rect;

-

-    rect.x1 = x;

-    rect.y1 = dPriv->h - y - h;

-    rect.x2 = x + w;

-    rect.y2 = rect.y1 + h;

-    driReportDamage(dPriv, &rect, 1);

-

-    dPriv->driScreenPriv->DriverAPI.CopySubBuffer(dPriv, x, y, w, h);

-}

-

-const __DRIcopySubBufferExtension driCopySubBufferExtension = {

-    { __DRI_COPY_SUB_BUFFER, __DRI_COPY_SUB_BUFFER_VERSION },

-    driCopySubBuffer

-};

-

-static void driSetSwapInterval(__DRIdrawable *dPriv, unsigned int interval)

-{

-    dPriv->swap_interval = interval;

-}

-

-static unsigned int driGetSwapInterval(__DRIdrawable *dPriv)

-{

-    return dPriv->swap_interval;

-}

-

-const __DRIswapControlExtension driSwapControlExtension = {

-    { __DRI_SWAP_CONTROL, __DRI_SWAP_CONTROL_VERSION },

-    driSetSwapInterval,

-    driGetSwapInterval

-};

-

-

-/**

- * This is called via __DRIscreenRec's createNewDrawable pointer.

- */

-static __DRIdrawable *

-driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config,

-		     drm_drawable_t hwDrawable, int renderType,

-		     const int *attrs, void *data)

-{

-    __DRIdrawable *pdp;

-

-    /* Since pbuffers are not yet supported, no drawable attributes are

-     * supported either.

-     */

-    (void) attrs;

-    (void) renderType;

-

-    pdp = malloc(sizeof *pdp);

-    if (!pdp) {

-	return NULL;

-    }

-

-    pdp->driContextPriv = NULL;

-    pdp->loaderPrivate = data;

-    pdp->hHWDrawable = hwDrawable;

-    pdp->refcount = 1;

-    pdp->pStamp = NULL;

-    pdp->lastStamp = 0;

-    pdp->index = 0;

-    pdp->x = 0;

-    pdp->y = 0;

-    pdp->w = 0;

-    pdp->h = 0;

-    pdp->numClipRects = 0;

-    pdp->numBackClipRects = 0;

-    pdp->pClipRects = NULL;

-    pdp->pBackClipRects = NULL;

-    pdp->vblSeq = 0;

-    pdp->vblFlags = 0;

-

-    pdp->driScreenPriv = psp;

-

-    if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, &config->modes, 0)) {

-       free(pdp);

-       return NULL;

-    }

-

-    pdp->msc_base = 0;

-

-    /* This special default value is replaced with the configured

-     * default value when the drawable is first bound to a direct

-     * rendering context. 

-     */

-    pdp->swap_interval = (unsigned)-1;

-

-    return pdp;

-}

-

-

-static __DRIdrawable *

-dri2CreateNewDrawable(__DRIscreen *screen,

-		      const __DRIconfig *config,

-		      void *loaderPrivate)

-{

-    __DRIdrawable *pdraw;

-

-    pdraw = driCreateNewDrawable(screen, config, 0, 0, NULL, loaderPrivate);

-    if (!pdraw)

-    	return NULL;

-

-    pdraw->pClipRects = &pdraw->dri2.clipRect;

-    pdraw->pBackClipRects = &pdraw->dri2.clipRect;

-

-    pdraw->pStamp = &pdraw->dri2.stamp;

-    *pdraw->pStamp = pdraw->lastStamp + 1;

-

-    return pdraw;

-}

-

-static __DRIbuffer *

-dri2AllocateBuffer(__DRIscreen *screen,

-		   unsigned int attachment, unsigned int format,

-		   int width, int height)

-{

-    return (*screen->DriverAPI.AllocateBuffer)(screen, attachment, format,

-					       width, height);

-}

-

-static void

-dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)

-{

-   (*screen->DriverAPI.ReleaseBuffer)(screen, buffer);

-}

-

-

-static int

-dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *val)

-{

-   if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))

-      return -1;

-

-   *val = driQueryOptionb(&screen->optionCache, var);

-

-   return 0;

-}

-

-static int

-dri2ConfigQueryi(__DRIscreen *screen, const char *var, GLint *val)

-{

-   if (!driCheckOption(&screen->optionCache, var, DRI_INT) &&

-       !driCheckOption(&screen->optionCache, var, DRI_ENUM))

-      return -1;

-

-    *val = driQueryOptioni(&screen->optionCache, var);

-

-    return 0;

-}

-

-static int

-dri2ConfigQueryf(__DRIscreen *screen, const char *var, GLfloat *val)

-{

-   if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))

-      return -1;

-

-    *val = driQueryOptionf(&screen->optionCache, var);

-

-    return 0;

-}

-

-

-static void dri_get_drawable(__DRIdrawable *pdp)

-{

-    pdp->refcount++;

-}

-	

-static void dri_put_drawable(__DRIdrawable *pdp)

-{

-    __DRIscreen *psp;

-

-    if (pdp) {

-	pdp->refcount--;

-	if (pdp->refcount)

-	    return;

-

-	psp = pdp->driScreenPriv;

-        (*psp->DriverAPI.DestroyBuffer)(pdp);

-	if (pdp->pClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {

-	    free(pdp->pClipRects);

-	    pdp->pClipRects = NULL;

-	}

-	if (pdp->pBackClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {

-	    free(pdp->pBackClipRects);

-	    pdp->pBackClipRects = NULL;

-	}

-	free(pdp);

-    }

-}

-

-static void

-driDestroyDrawable(__DRIdrawable *pdp)

-{

-    dri_put_drawable(pdp);

-}

-

-/*@}*/

-

-

-/*****************************************************************/

-/** \name Context handling functions                             */

-/*****************************************************************/

-/*@{*/

-

-/**

- * Destroy the per-context private information.

- * 

- * \internal

- * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls

- * drmDestroyContext(), and finally frees \p contextPrivate.

- */

-static void

-driDestroyContext(__DRIcontext *pcp)

-{

-    if (pcp) {

-	(*pcp->driScreenPriv->DriverAPI.DestroyContext)(pcp);

-	free(pcp);

-    }

-}

-

-

-/**

- * Create the per-drawable private driver information.

- * 

- * \param render_type   Type of rendering target.  \c GLX_RGBA_TYPE is the only

- *                      type likely to ever be supported for direct-rendering.

- *                      However, \c GLX_RGBA_FLOAT_TYPE_ARB may eventually be

- *                      supported by some drivers.

- * \param shared        Context with which to share textures, etc. or NULL

- *

- * \returns An opaque pointer to the per-context private information on

- *          success, or \c NULL on failure.

- * 

- * \internal

- * This function allocates and fills a __DRIcontextRec structure.  It

- * performs some device independent initialization and passes all the

- * relevent information to __DriverAPIRec::CreateContext to create the

- * context.

- *

- */

-static __DRIcontext *

-driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config,

-		    int render_type, __DRIcontext *shared, 

-		    drm_context_t hwContext, void *data)

-{

-    __DRIcontext *pcp;

-    void * const shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;

-

-    (void) render_type;

-

-    pcp = malloc(sizeof *pcp);

-    if (!pcp)

-	return NULL;

-

-    pcp->driScreenPriv = psp;

-    pcp->driDrawablePriv = NULL;

-    pcp->loaderPrivate = data;

-    

-    pcp->dri2.draw_stamp = 0;

-    pcp->dri2.read_stamp = 0;

-

-    pcp->hHWContext = hwContext;

-

-    if ( !(*psp->DriverAPI.CreateContext)(API_OPENGL,

-					  &config->modes, pcp, shareCtx) ) {

-        free(pcp);

-        return NULL;

-    }

-

-    return pcp;

-}

-

-static unsigned int

-dri2GetAPIMask(__DRIscreen *screen)

-{

-    return screen->api_mask;

-}

-

-static __DRIcontext *

-dri2CreateNewContextForAPI(__DRIscreen *screen, int api,

-			   const __DRIconfig *config,

-			   __DRIcontext *shared, void *data)

-{

-    __DRIcontext *context;

-    const struct gl_config *modes = (config != NULL) ? &config->modes : NULL;

-    void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;

-    gl_api mesa_api;

-

-    if (!(screen->api_mask & (1 << api)))

-	return NULL;

-

-    switch (api) {

-    case __DRI_API_OPENGL:

-	    mesa_api = API_OPENGL;

-	    break;

-    case __DRI_API_GLES:

-	    mesa_api = API_OPENGLES;

-	    break;

-    case __DRI_API_GLES2:

-	    mesa_api = API_OPENGLES2;

-	    break;

-    default:

-	    return NULL;

-    }

-

-    context = malloc(sizeof *context);

-    if (!context)

-	return NULL;

-

-    context->driScreenPriv = screen;

-    context->driDrawablePriv = NULL;

-    context->loaderPrivate = data;

-    

-    if (!(*screen->DriverAPI.CreateContext)(mesa_api, modes,

-					    context, shareCtx) ) {

-        free(context);

-        return NULL;

-    }

-

-    return context;

-}

-

-

-static __DRIcontext *

-dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,

-		      __DRIcontext *shared, void *data)

-{

-   return dri2CreateNewContextForAPI(screen, __DRI_API_OPENGL,

-				     config, shared, data);

-}

-

-static int

-driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)

-{

-    (void) dest;

-    (void) src;

-    (void) mask;

-    return GL_FALSE;

-}

-

-/*@}*/

-

-

-/*****************************************************************/

-/** \name Screen handling functions                              */

-/*****************************************************************/

-/*@{*/

-

-/**

- * Destroy the per-screen private information.

- * 

- * \internal

- * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls

- * drmClose(), and finally frees \p screenPrivate.

- */

-static void driDestroyScreen(__DRIscreen *psp)

-{

-    if (psp) {

-	/* No interaction with the X-server is possible at this point.  This

-	 * routine is called after XCloseDisplay, so there is no protocol

-	 * stream open to the X-server anymore.

-	 */

-

-       _mesa_destroy_shader_compiler();

-

-	if (psp->DriverAPI.DestroyScreen)

-	    (*psp->DriverAPI.DestroyScreen)(psp);

-

-	if (!psp->dri2.enabled) {

-	   (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);

-	   (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);

-	   (void)drmCloseOnce(psp->fd);

-	} else {

-	   driDestroyOptionCache(&psp->optionCache);

-	   driDestroyOptionInfo(&psp->optionInfo);

-	}

-

-	free(psp);

-    }

-}

-

-static void

-setupLoaderExtensions(__DRIscreen *psp,

-		      const __DRIextension **extensions)

-{

-    int i;

-

-    for (i = 0; extensions[i]; i++) {

-	if (strcmp(extensions[i]->name, __DRI_GET_DRAWABLE_INFO) == 0)

-	    psp->getDrawableInfo = (__DRIgetDrawableInfoExtension *) extensions[i];

-	if (strcmp(extensions[i]->name, __DRI_DAMAGE) == 0)

-	    psp->damage = (__DRIdamageExtension *) extensions[i];

-	if (strcmp(extensions[i]->name, __DRI_SYSTEM_TIME) == 0)

-	    psp->systemTime = (__DRIsystemTimeExtension *) extensions[i];

-	if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0)

-	    psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i];

-	if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0)

-	    psp->dri2.image = (__DRIimageLookupExtension *) extensions[i];

-	if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0)

-	    psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i];

-    }

-}

-

-/**

- * This is the bootstrap function for the driver.  libGL supplies all of the

- * requisite information about the system, and the driver initializes itself.

- * This routine also fills in the linked list pointed to by \c driver_modes

- * with the \c struct gl_config that the driver can support for windows or

- * pbuffers.

- *

- * For legacy DRI.

- * 

- * \param scrn  Index of the screen

- * \param ddx_version Version of the 2D DDX.  This may not be meaningful for

- *                    all drivers.

- * \param dri_version Version of the "server-side" DRI.

- * \param drm_version Version of the kernel DRM.

- * \param frame_buffer Data describing the location and layout of the

- *                     framebuffer.

- * \param pSAREA       Pointer to the SAREA.

- * \param fd           Device handle for the DRM.

- * \param extensions   ??

- * \param driver_modes  Returns modes suppoted by the driver

- * \param loaderPrivate  ??

- * 

- * \note There is no need to check the minimum API version in this

- * function.  Since the name of this function is versioned, it is

- * impossible for a loader that is too old to even load this driver.

- */

-static __DRIscreen *

-driCreateNewScreen(int scrn,

-		   const __DRIversion *ddx_version,

-		   const __DRIversion *dri_version,

-		   const __DRIversion *drm_version,

-		   const __DRIframebuffer *frame_buffer,

-		   drmAddress pSAREA, int fd, 

-		   const __DRIextension **extensions,

-		   const __DRIconfig ***driver_modes,

-		   void *loaderPrivate)

-{

-    static const __DRIextension *emptyExtensionList[] = { NULL };

-    __DRIscreen *psp;

-

-    (void) loaderPrivate;

-

-    if (driDriverAPI.InitScreen == NULL)

-	return NULL;

-

-    psp = calloc(1, sizeof *psp);

-    if (!psp)

-	return NULL;

-

-    setupLoaderExtensions(psp, extensions);

-

-    /*

-    ** NOT_DONE: This is used by the X server to detect when the client

-    ** has died while holding the drawable lock.  The client sets the

-    ** drawable lock to this value.

-    */

-    psp->drawLockID = 1;

-

-    psp->drm_version = *drm_version;

-    psp->ddx_version = *ddx_version;

-    psp->dri_version = *dri_version;

-

-    psp->pSAREA = pSAREA;

-    psp->lock = (drmLock *) &psp->pSAREA->lock;

-

-    psp->pFB = frame_buffer->base;

-    psp->fbSize = frame_buffer->size;

-    psp->fbStride = frame_buffer->stride;

-    psp->fbWidth = frame_buffer->width;

-    psp->fbHeight = frame_buffer->height;

-    psp->devPrivSize = frame_buffer->dev_priv_size;

-    psp->pDevPriv = frame_buffer->dev_priv;

-    psp->fbBPP = psp->fbStride * 8 / frame_buffer->width;

-

-    psp->extensions = emptyExtensionList;

-    psp->fd = fd;

-    psp->myNum = scrn;

-    psp->dri2.enabled = GL_FALSE;

-

-    psp->DriverAPI = driDriverAPI;

-    psp->api_mask = (1 << __DRI_API_OPENGL);

-

-    *driver_modes = driDriverAPI.InitScreen(psp);

-    if (*driver_modes == NULL) {

-	free(psp);

-	return NULL;

-    }

-

-    return psp;

-}

-

-/**

- * DRI2

- */

-static __DRIscreen *

-dri2CreateNewScreen(int scrn, int fd,

-		    const __DRIextension **extensions,

-		    const __DRIconfig ***driver_configs, void *data)

-{

-    static const __DRIextension *emptyExtensionList[] = { NULL };

-    __DRIscreen *psp;

-    drmVersionPtr version;

-

-    if (driDriverAPI.InitScreen2 == NULL)

-        return NULL;

-

-    psp = calloc(1, sizeof(*psp));

-    if (!psp)

-	return NULL;

-

-    setupLoaderExtensions(psp, extensions);

-

-    version = drmGetVersion(fd);

-    if (version) {

-	psp->drm_version.major = version->version_major;

-	psp->drm_version.minor = version->version_minor;

-	psp->drm_version.patch = version->version_patchlevel;

-	drmFreeVersion(version);

-    }

-

-    psp->extensions = emptyExtensionList;

-    psp->fd = fd;

-    psp->myNum = scrn;

-    psp->dri2.enabled = GL_TRUE;

-

-    psp->DriverAPI = driDriverAPI;

-    psp->api_mask = (1 << __DRI_API_OPENGL);

-    *driver_configs = driDriverAPI.InitScreen2(psp);

-    if (*driver_configs == NULL) {

-	free(psp);

-	return NULL;

-    }

-

-    psp->DriverAPI = driDriverAPI;

-    psp->loaderPrivate = data;

-

-    driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions,

-		       __dri2NConfigOptions);

-    driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum,

-			"dri2");

-

-    return psp;

-}

-

-static const __DRIextension **driGetExtensions(__DRIscreen *psp)

-{

-    return psp->extensions;

-}

-

-/** Core interface */

-const __DRIcoreExtension driCoreExtension = {

-    { __DRI_CORE, __DRI_CORE_VERSION },

-    NULL,

-    driDestroyScreen,

-    driGetExtensions,

-    driGetConfigAttrib,

-    driIndexConfigAttrib,

-    NULL,

-    driDestroyDrawable,

-    driSwapBuffers,

-    NULL,

-    driCopyContext,

-    driDestroyContext,

-    driBindContext,

-    driUnbindContext

-};

-

-/** Legacy DRI interface */

-const __DRIlegacyExtension driLegacyExtension = {

-    { __DRI_LEGACY, __DRI_LEGACY_VERSION },

-    driCreateNewScreen,

-    driCreateNewDrawable,

-    driCreateNewContext,

-};

-

-/** DRI2 interface */

-const __DRIdri2Extension driDRI2Extension = {

-    { __DRI_DRI2, __DRI_DRI2_VERSION },

-    dri2CreateNewScreen,

-    dri2CreateNewDrawable,

-    dri2CreateNewContext,

-    dri2GetAPIMask,

-    dri2CreateNewContextForAPI,

-    dri2AllocateBuffer,

-    dri2ReleaseBuffer

-};

-

-const __DRI2configQueryExtension dri2ConfigQueryExtension = {

-   { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION },

-   dri2ConfigQueryb,

-   dri2ConfigQueryi,

-   dri2ConfigQueryf,

-};

-

-/**

- * Calculate amount of swap interval used between GLX buffer swaps.

- * 

- * The usage value, on the range [0,max], is the fraction of total swap

- * interval time used between GLX buffer swaps is calculated.

- *

- *            \f$p = t_d / (i * t_r)\f$

- * 

- * Where \f$t_d\f$ is the time since the last GLX buffer swap, \f$i\f$ is the

- * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time

- * required for a single vertical refresh period (as returned by \c

- * glXGetMscRateOML).

- * 

- * See the documentation for the GLX_MESA_swap_frame_usage extension for more

- * details.

- *

- * \param   dPriv  Pointer to the private drawable structure.

- * \return  If less than a single swap interval time period was required

- *          between GLX buffer swaps, a number greater than 0 and less than

- *          1.0 is returned.  If exactly one swap interval time period is

- *          required, 1.0 is returned, and if more than one is required then

- *          a number greater than 1.0 will be returned.

- *

- * \sa glXSwapIntervalSGI glXGetMscRateOML

- * 

- * \todo Instead of caching the \c glXGetMscRateOML function pointer, would it

- *       be possible to cache the sync rate?

- */

-float

-driCalculateSwapUsage( __DRIdrawable *dPriv, int64_t last_swap_ust,

-		       int64_t current_ust )

-{

-   int32_t   n;

-   int32_t   d;

-   int       interval;

-   float     usage = 1.0;

-   __DRIscreen *psp = dPriv->driScreenPriv;

-

-   if ( (*psp->systemTime->getMSCRate)(dPriv, &n, &d, dPriv->loaderPrivate) ) {

-      interval = (dPriv->swap_interval != 0) ? dPriv->swap_interval : 1;

-

-

-      /* We want to calculate

-       * (current_UST - last_swap_UST) / (interval * us_per_refresh).  We get

-       * current_UST by calling __glXGetUST.  last_swap_UST is stored in

-       * dPriv->swap_ust.  interval has already been calculated.

-       *

-       * The only tricky part is us_per_refresh.  us_per_refresh is

-       * 1000000 / MSC_rate.  We know the MSC_rate is n / d.  We can flip it

-       * around and say us_per_refresh = 1000000 * d / n.  Since this goes in

-       * the denominator of the final calculation, we calculate

-       * (interval * 1000000 * d) and move n into the numerator.

-       */

-

-      usage = (current_ust - last_swap_ust);

-      usage *= n;

-      usage /= (interval * d);

-      usage /= 1000000.0;

-   }

-   

-   return usage;

-}

-

-void

-dri2InvalidateDrawable(__DRIdrawable *drawable)

-{

-    drawable->dri2.stamp++;

-}

-

-/*@}*/

+/**
+ * \file dri_util.c
+ * DRI utility functions.
+ *
+ * This module acts as glue between GLX and the actual hardware driver.  A DRI
+ * driver doesn't really \e have to use any of this - it's optional.  But, some
+ * useful stuff is done here that otherwise would have to be duplicated in most
+ * drivers.
+ * 
+ * Basically, these utility functions take care of some of the dirty details of
+ * screen initialization, context creation, context binding, DRM setup, etc.
+ *
+ * These functions are compiled into each DRI driver so libGL.so knows nothing
+ * about them.
+ */
+
+
+#include <assert.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <stdio.h>
+
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *)-1)
+#endif
+
+#include "main/imports.h"
+#define None 0
+
+#include "dri_util.h"
+#include "drm_sarea.h"
+#include "utils.h"
+#include "xmlpool.h"
+#include "../glsl/glsl_parser_extras.h"
+
+PUBLIC const char __dri2ConfigOptions[] =
+   DRI_CONF_BEGIN
+      DRI_CONF_SECTION_PERFORMANCE
+         DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1)
+      DRI_CONF_SECTION_END
+   DRI_CONF_END;
+
+static const uint __dri2NConfigOptions = 1;
+
+#ifndef GLX_OML_sync_control
+typedef GLboolean ( * PFNGLXGETMSCRATEOMLPROC) (__DRIdrawable *drawable, int32_t *numerator, int32_t *denominator);
+#endif
+
+static void dri_get_drawable(__DRIdrawable *pdp);
+static void dri_put_drawable(__DRIdrawable *pdp);
+
+/**
+ * This is just a token extension used to signal that the driver
+ * supports setting a read drawable.
+ */
+const __DRIextension driReadDrawableExtension = {
+    __DRI_READ_DRAWABLE, __DRI_READ_DRAWABLE_VERSION
+};
+
+GLint
+driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 )
+{
+   if (rect2.x1 > rect1.x1) rect1.x1 = rect2.x1;
+   if (rect2.x2 < rect1.x2) rect1.x2 = rect2.x2;
+   if (rect2.y1 > rect1.y1) rect1.y1 = rect2.y1;
+   if (rect2.y2 < rect1.y2) rect1.y2 = rect2.y2;
+
+   if (rect1.x1 > rect1.x2 || rect1.y1 > rect1.y2) return 0;
+
+   return (rect1.x2 - rect1.x1) * (rect1.y2 - rect1.y1);
+}
+
+/*****************************************************************/
+/** \name Context (un)binding functions                          */
+/*****************************************************************/
+/*@{*/
+
+/**
+ * Unbind context.
+ * 
+ * \param scrn the screen.
+ * \param gc context.
+ *
+ * \return \c GL_TRUE on success, or \c GL_FALSE on failure.
+ * 
+ * \internal
+ * This function calls __DriverAPIRec::UnbindContext, and then decrements
+ * __DRIdrawableRec::refcount which must be non-zero for a successful
+ * return.
+ * 
+ * While casting the opaque private pointers associated with the parameters
+ * into their respective real types it also assures they are not \c NULL. 
+ */
+static int driUnbindContext(__DRIcontext *pcp)
+{
+    __DRIscreen *psp;
+    __DRIdrawable *pdp;
+    __DRIdrawable *prp;
+
+    /*
+    ** Assume error checking is done properly in glXMakeCurrent before
+    ** calling driUnbindContext.
+    */
+
+    if (pcp == NULL)
+        return GL_FALSE;
+
+    psp = pcp->driScreenPriv;
+    pdp = pcp->driDrawablePriv;
+    prp = pcp->driReadablePriv;
+
+    /* already unbound */
+    if (!pdp && !prp)
+      return GL_TRUE;
+    /* Let driver unbind drawable from context */
+    (*psp->DriverAPI.UnbindContext)(pcp);
+
+    assert(pdp);
+    if (pdp->refcount == 0) {
+	/* ERROR!!! */
+	return GL_FALSE;
+    }
+
+    dri_put_drawable(pdp);
+
+    if (prp != pdp) {
+        if (prp->refcount == 0) {
+	    /* ERROR!!! */
+	    return GL_FALSE;
+	}
+
+    	dri_put_drawable(prp);
+    }
+
+
+    /* XXX this is disabled so that if we call SwapBuffers on an unbound
+     * window we can determine the last context bound to the window and
+     * use that context's lock. (BrianP, 2-Dec-2000)
+     */
+    pcp->driDrawablePriv = pcp->driReadablePriv = NULL;
+
+    return GL_TRUE;
+}
+
+/**
+ * This function takes both a read buffer and a draw buffer.  This is needed
+ * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
+ * function.
+ */
+static int driBindContext(__DRIcontext *pcp,
+			  __DRIdrawable *pdp,
+			  __DRIdrawable *prp)
+{
+    __DRIscreen *psp = NULL;
+
+    /*
+    ** Assume error checking is done properly in glXMakeCurrent before
+    ** calling driUnbindContext.
+    */
+
+    if (!pcp)
+	return GL_FALSE;
+
+    /* Bind the drawable to the context */
+    psp = pcp->driScreenPriv;
+    pcp->driDrawablePriv = pdp;
+    pcp->driReadablePriv = prp;
+    if (pdp) {
+	pdp->driContextPriv = pcp;
+	dri_get_drawable(pdp);
+    }
+    if (prp && pdp != prp) {
+	dri_get_drawable(prp);
+    }
+
+    /*
+    ** Now that we have a context associated with this drawable, we can
+    ** initialize the drawable information if has not been done before.
+    */
+
+    if (!psp->dri2.enabled) {
+	if (pdp && !pdp->pStamp) {
+	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+	    __driUtilUpdateDrawableInfo(pdp);
+	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+	}
+	if (prp && pdp != prp && !prp->pStamp) {
+	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+	    __driUtilUpdateDrawableInfo(prp);
+	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+        }
+    }
+
+    /* Call device-specific MakeCurrent */
+    return (*psp->DriverAPI.MakeCurrent)(pcp, pdp, prp);
+}
+
+/*@}*/
+
+
+/*****************************************************************/
+/** \name Drawable handling functions                            */
+/*****************************************************************/
+/*@{*/
+
+/**
+ * Update private drawable information.
+ *
+ * \param pdp pointer to the private drawable information to update.
+ * 
+ * This function basically updates the __DRIdrawable struct's
+ * cliprect information by calling \c __DRIinterfaceMethods::getDrawableInfo.
+ * This is usually called by the DRI_VALIDATE_DRAWABLE_INFO macro which
+ * compares the __DRIdrwablePrivate pStamp and lastStamp values.  If
+ * the values are different that means we have to update the clipping
+ * info.
+ */
+void
+__driUtilUpdateDrawableInfo(__DRIdrawable *pdp)
+{
+    __DRIscreen *psp = pdp->driScreenPriv;
+    __DRIcontext *pcp = pdp->driContextPriv;
+    
+    if (!pcp 
+	|| ((pdp != pcp->driDrawablePriv) && (pdp != pcp->driReadablePriv))) {
+	/* ERROR!!! 
+	 * ...but we must ignore it. There can be many contexts bound to a
+	 * drawable.
+	 */
+    }
+
+    if (pdp->pClipRects) {
+	free(pdp->pClipRects); 
+	pdp->pClipRects = NULL;
+    }
+
+    if (pdp->pBackClipRects) {
+	free(pdp->pBackClipRects); 
+	pdp->pBackClipRects = NULL;
+    }
+
+    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+
+    if (! (*psp->getDrawableInfo->getDrawableInfo)(pdp,
+			  &pdp->index, &pdp->lastStamp,
+			  &pdp->x, &pdp->y, &pdp->w, &pdp->h,
+			  &pdp->numClipRects, &pdp->pClipRects,
+			  &pdp->backX,
+			  &pdp->backY,
+			  &pdp->numBackClipRects,
+			  &pdp->pBackClipRects,
+			  pdp->loaderPrivate)) {
+	/* Error -- eg the window may have been destroyed.  Keep going
+	 * with no cliprects.
+	 */
+        pdp->pStamp = &pdp->lastStamp; /* prevent endless loop */
+	pdp->numClipRects = 0;
+	pdp->pClipRects = NULL;
+	pdp->numBackClipRects = 0;
+	pdp->pBackClipRects = NULL;
+    }
+    else
+       pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);
+
+    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
+}
+
+/*@}*/
+
+/*****************************************************************/
+/** \name GLX callbacks                                          */
+/*****************************************************************/
+/*@{*/
+
+static void driReportDamage(__DRIdrawable *pdp,
+			    struct drm_clip_rect *pClipRects, int numClipRects)
+{
+    __DRIscreen *psp = pdp->driScreenPriv;
+
+    /* Check that we actually have the new damage report method */
+    if (psp->damage) {
+	/* Report the damage.  Currently, all our drivers draw
+	 * directly to the front buffer, so we report the damage there
+	 * rather than to the backing storein (if any).
+	 */
+	(*psp->damage->reportDamage)(pdp,
+				     pdp->x, pdp->y,
+				     pClipRects, numClipRects,
+				     GL_TRUE, pdp->loaderPrivate);
+    }
+}
+
+
+/**
+ * Swap buffers.
+ *
+ * \param drawablePrivate opaque pointer to the per-drawable private info.
+ * 
+ * \internal
+ * This function calls __DRIdrawable::swapBuffers.
+ * 
+ * Is called directly from glXSwapBuffers().
+ */
+static void driSwapBuffers(__DRIdrawable *dPriv)
+{
+    __DRIscreen *psp = dPriv->driScreenPriv;
+    drm_clip_rect_t *rects;
+    int i;
+
+    psp->DriverAPI.SwapBuffers(dPriv);
+
+    if (!dPriv->numClipRects)
+        return;
+
+    rects = malloc(sizeof(*rects) * dPriv->numClipRects);
+
+    if (!rects)
+        return;
+
+    for (i = 0; i < dPriv->numClipRects; i++) {
+        rects[i].x1 = dPriv->pClipRects[i].x1 - dPriv->x;
+        rects[i].y1 = dPriv->pClipRects[i].y1 - dPriv->y;
+        rects[i].x2 = dPriv->pClipRects[i].x2 - dPriv->x;
+        rects[i].y2 = dPriv->pClipRects[i].y2 - dPriv->y;
+    }
+
+    driReportDamage(dPriv, rects, dPriv->numClipRects);
+    free(rects);
+}
+
+static int driDrawableGetMSC( __DRIscreen *sPriv, __DRIdrawable *dPriv,
+			      int64_t *msc )
+{
+    return sPriv->DriverAPI.GetDrawableMSC(sPriv, dPriv, msc);
+}
+
+
+static int driWaitForMSC(__DRIdrawable *dPriv, int64_t target_msc,
+			 int64_t divisor, int64_t remainder,
+			 int64_t * msc, int64_t * sbc)
+{
+    __DRIswapInfo  sInfo;
+    int  status;
+
+    status = dPriv->driScreenPriv->DriverAPI.WaitForMSC( dPriv, target_msc,
+                                                         divisor, remainder,
+                                                         msc );
+
+    /* GetSwapInfo() may not be provided by the driver if GLX_SGI_video_sync
+     * is supported but GLX_OML_sync_control is not.  Therefore, don't return
+     * an error value if GetSwapInfo() is not implemented.
+    */
+    if ( status == 0
+         && dPriv->driScreenPriv->DriverAPI.GetSwapInfo ) {
+        status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );
+        *sbc = sInfo.swap_count;
+    }
+
+    return status;
+}
+
+
+const __DRImediaStreamCounterExtension driMediaStreamCounterExtension = {
+    { __DRI_MEDIA_STREAM_COUNTER, __DRI_MEDIA_STREAM_COUNTER_VERSION },
+    driWaitForMSC,
+    driDrawableGetMSC,
+};
+
+
+static void driCopySubBuffer(__DRIdrawable *dPriv,
+			      int x, int y, int w, int h)
+{
+    drm_clip_rect_t rect;
+
+    rect.x1 = x;
+    rect.y1 = dPriv->h - y - h;
+    rect.x2 = x + w;
+    rect.y2 = rect.y1 + h;
+    driReportDamage(dPriv, &rect, 1);
+
+    dPriv->driScreenPriv->DriverAPI.CopySubBuffer(dPriv, x, y, w, h);
+}
+
+const __DRIcopySubBufferExtension driCopySubBufferExtension = {
+    { __DRI_COPY_SUB_BUFFER, __DRI_COPY_SUB_BUFFER_VERSION },
+    driCopySubBuffer
+};
+
+static void driSetSwapInterval(__DRIdrawable *dPriv, unsigned int interval)
+{
+    dPriv->swap_interval = interval;
+}
+
+static unsigned int driGetSwapInterval(__DRIdrawable *dPriv)
+{
+    return dPriv->swap_interval;
+}
+
+const __DRIswapControlExtension driSwapControlExtension = {
+    { __DRI_SWAP_CONTROL, __DRI_SWAP_CONTROL_VERSION },
+    driSetSwapInterval,
+    driGetSwapInterval
+};
+
+
+/**
+ * This is called via __DRIscreenRec's createNewDrawable pointer.
+ */
+static __DRIdrawable *
+driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config,
+		     drm_drawable_t hwDrawable, int renderType,
+		     const int *attrs, void *data)
+{
+    __DRIdrawable *pdp;
+
+    /* Since pbuffers are not yet supported, no drawable attributes are
+     * supported either.
+     */
+    (void) attrs;
+    (void) renderType;
+
+    pdp = malloc(sizeof *pdp);
+    if (!pdp) {
+	return NULL;
+    }
+
+    pdp->driContextPriv = NULL;
+    pdp->loaderPrivate = data;
+    pdp->hHWDrawable = hwDrawable;
+    pdp->refcount = 1;
+    pdp->pStamp = NULL;
+    pdp->lastStamp = 0;
+    pdp->index = 0;
+    pdp->x = 0;
+    pdp->y = 0;
+    pdp->w = 0;
+    pdp->h = 0;
+    pdp->numClipRects = 0;
+    pdp->numBackClipRects = 0;
+    pdp->pClipRects = NULL;
+    pdp->pBackClipRects = NULL;
+    pdp->vblSeq = 0;
+    pdp->vblFlags = 0;
+
+    pdp->driScreenPriv = psp;
+
+    if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, &config->modes, 0)) {
+       free(pdp);
+       return NULL;
+    }
+
+    pdp->msc_base = 0;
+
+    /* This special default value is replaced with the configured
+     * default value when the drawable is first bound to a direct
+     * rendering context. 
+     */
+    pdp->swap_interval = (unsigned)-1;
+
+    return pdp;
+}
+
+
+static __DRIdrawable *
+dri2CreateNewDrawable(__DRIscreen *screen,
+		      const __DRIconfig *config,
+		      void *loaderPrivate)
+{
+    __DRIdrawable *pdraw;
+
+    pdraw = driCreateNewDrawable(screen, config, 0, 0, NULL, loaderPrivate);
+    if (!pdraw)
+    	return NULL;
+
+    pdraw->pClipRects = &pdraw->dri2.clipRect;
+    pdraw->pBackClipRects = &pdraw->dri2.clipRect;
+
+    pdraw->pStamp = &pdraw->dri2.stamp;
+    *pdraw->pStamp = pdraw->lastStamp + 1;
+
+    return pdraw;
+}
+
+static __DRIbuffer *
+dri2AllocateBuffer(__DRIscreen *screen,
+		   unsigned int attachment, unsigned int format,
+		   int width, int height)
+{
+    return (*screen->DriverAPI.AllocateBuffer)(screen, attachment, format,
+					       width, height);
+}
+
+static void
+dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
+{
+   (*screen->DriverAPI.ReleaseBuffer)(screen, buffer);
+}
+
+
+static int
+dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *val)
+{
+   if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))
+      return -1;
+
+   *val = driQueryOptionb(&screen->optionCache, var);
+
+   return 0;
+}
+
+static int
+dri2ConfigQueryi(__DRIscreen *screen, const char *var, GLint *val)
+{
+   if (!driCheckOption(&screen->optionCache, var, DRI_INT) &&
+       !driCheckOption(&screen->optionCache, var, DRI_ENUM))
+      return -1;
+
+    *val = driQueryOptioni(&screen->optionCache, var);
+
+    return 0;
+}
+
+static int
+dri2ConfigQueryf(__DRIscreen *screen, const char *var, GLfloat *val)
+{
+   if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))
+      return -1;
+
+    *val = driQueryOptionf(&screen->optionCache, var);
+
+    return 0;
+}
+
+
+static void dri_get_drawable(__DRIdrawable *pdp)
+{
+    pdp->refcount++;
+}
+	
+static void dri_put_drawable(__DRIdrawable *pdp)
+{
+    __DRIscreen *psp;
+
+    if (pdp) {
+	pdp->refcount--;
+	if (pdp->refcount)
+	    return;
+
+	psp = pdp->driScreenPriv;
+        (*psp->DriverAPI.DestroyBuffer)(pdp);
+	if (pdp->pClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {
+	    free(pdp->pClipRects);
+	    pdp->pClipRects = NULL;
+	}
+	if (pdp->pBackClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {
+	    free(pdp->pBackClipRects);
+	    pdp->pBackClipRects = NULL;
+	}
+	free(pdp);
+    }
+}
+
+static void
+driDestroyDrawable(__DRIdrawable *pdp)
+{
+    dri_put_drawable(pdp);
+}
+
+/*@}*/
+
+
+/*****************************************************************/
+/** \name Context handling functions                             */
+/*****************************************************************/
+/*@{*/
+
+/**
+ * Destroy the per-context private information.
+ * 
+ * \internal
+ * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls
+ * drmDestroyContext(), and finally frees \p contextPrivate.
+ */
+static void
+driDestroyContext(__DRIcontext *pcp)
+{
+    if (pcp) {
+	(*pcp->driScreenPriv->DriverAPI.DestroyContext)(pcp);
+	free(pcp);
+    }
+}
+
+
+/**
+ * Create the per-drawable private driver information.
+ * 
+ * \param render_type   Type of rendering target.  \c GLX_RGBA_TYPE is the only
+ *                      type likely to ever be supported for direct-rendering.
+ *                      However, \c GLX_RGBA_FLOAT_TYPE_ARB may eventually be
+ *                      supported by some drivers.
+ * \param shared        Context with which to share textures, etc. or NULL
+ *
+ * \returns An opaque pointer to the per-context private information on
+ *          success, or \c NULL on failure.
+ * 
+ * \internal
+ * This function allocates and fills a __DRIcontextRec structure.  It
+ * performs some device independent initialization and passes all the
+ * relevent information to __DriverAPIRec::CreateContext to create the
+ * context.
+ *
+ */
+static __DRIcontext *
+driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config,
+		    int render_type, __DRIcontext *shared, 
+		    drm_context_t hwContext, void *data)
+{
+    __DRIcontext *pcp;
+    void * const shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
+
+    (void) render_type;
+
+    pcp = malloc(sizeof *pcp);
+    if (!pcp)
+	return NULL;
+
+    pcp->driScreenPriv = psp;
+    pcp->driDrawablePriv = NULL;
+    pcp->loaderPrivate = data;
+    
+    pcp->dri2.draw_stamp = 0;
+    pcp->dri2.read_stamp = 0;
+
+    pcp->hHWContext = hwContext;
+
+    if ( !(*psp->DriverAPI.CreateContext)(API_OPENGL,
+					  &config->modes, pcp, shareCtx) ) {
+        free(pcp);
+        return NULL;
+    }
+
+    return pcp;
+}
+
+static unsigned int
+dri2GetAPIMask(__DRIscreen *screen)
+{
+    return screen->api_mask;
+}
+
+static __DRIcontext *
+dri2CreateNewContextForAPI(__DRIscreen *screen, int api,
+			   const __DRIconfig *config,
+			   __DRIcontext *shared, void *data)
+{
+    __DRIcontext *context;
+    const struct gl_config *modes = (config != NULL) ? &config->modes : NULL;
+    void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
+    gl_api mesa_api;
+
+    if (!(screen->api_mask & (1 << api)))
+	return NULL;
+
+    switch (api) {
+    case __DRI_API_OPENGL:
+	    mesa_api = API_OPENGL;
+	    break;
+    case __DRI_API_GLES:
+	    mesa_api = API_OPENGLES;
+	    break;
+    case __DRI_API_GLES2:
+	    mesa_api = API_OPENGLES2;
+	    break;
+    default:
+	    return NULL;
+    }
+
+    context = malloc(sizeof *context);
+    if (!context)
+	return NULL;
+
+    context->driScreenPriv = screen;
+    context->driDrawablePriv = NULL;
+    context->loaderPrivate = data;
+    
+    if (!(*screen->DriverAPI.CreateContext)(mesa_api, modes,
+					    context, shareCtx) ) {
+        free(context);
+        return NULL;
+    }
+
+    return context;
+}
+
+
+static __DRIcontext *
+dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
+		      __DRIcontext *shared, void *data)
+{
+   return dri2CreateNewContextForAPI(screen, __DRI_API_OPENGL,
+				     config, shared, data);
+}
+
+static int
+driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)
+{
+    (void) dest;
+    (void) src;
+    (void) mask;
+    return GL_FALSE;
+}
+
+/*@}*/
+
+
+/*****************************************************************/
+/** \name Screen handling functions                              */
+/*****************************************************************/
+/*@{*/
+
+/**
+ * Destroy the per-screen private information.
+ * 
+ * \internal
+ * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls
+ * drmClose(), and finally frees \p screenPrivate.
+ */
+static void driDestroyScreen(__DRIscreen *psp)
+{
+    if (psp) {
+	/* No interaction with the X-server is possible at this point.  This
+	 * routine is called after XCloseDisplay, so there is no protocol
+	 * stream open to the X-server anymore.
+	 */
+
+       _mesa_destroy_shader_compiler();
+
+	if (psp->DriverAPI.DestroyScreen)
+	    (*psp->DriverAPI.DestroyScreen)(psp);
+
+	if (!psp->dri2.enabled) {
+	   (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
+	   (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
+	   (void)drmCloseOnce(psp->fd);
+	} else {
+	   driDestroyOptionCache(&psp->optionCache);
+	   driDestroyOptionInfo(&psp->optionInfo);
+	}
+
+	free(psp);
+    }
+}
+
+static void
+setupLoaderExtensions(__DRIscreen *psp,
+		      const __DRIextension **extensions)
+{
+    int i;
+
+    for (i = 0; extensions[i]; i++) {
+	if (strcmp(extensions[i]->name, __DRI_GET_DRAWABLE_INFO) == 0)
+	    psp->getDrawableInfo = (__DRIgetDrawableInfoExtension *) extensions[i];
+	if (strcmp(extensions[i]->name, __DRI_DAMAGE) == 0)
+	    psp->damage = (__DRIdamageExtension *) extensions[i];
+	if (strcmp(extensions[i]->name, __DRI_SYSTEM_TIME) == 0)
+	    psp->systemTime = (__DRIsystemTimeExtension *) extensions[i];
+	if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0)
+	    psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i];
+	if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0)
+	    psp->dri2.image = (__DRIimageLookupExtension *) extensions[i];
+	if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0)
+	    psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i];
+    }
+}
+
+/**
+ * This is the bootstrap function for the driver.  libGL supplies all of the
+ * requisite information about the system, and the driver initializes itself.
+ * This routine also fills in the linked list pointed to by \c driver_modes
+ * with the \c struct gl_config that the driver can support for windows or
+ * pbuffers.
+ *
+ * For legacy DRI.
+ * 
+ * \param scrn  Index of the screen
+ * \param ddx_version Version of the 2D DDX.  This may not be meaningful for
+ *                    all drivers.
+ * \param dri_version Version of the "server-side" DRI.
+ * \param drm_version Version of the kernel DRM.
+ * \param frame_buffer Data describing the location and layout of the
+ *                     framebuffer.
+ * \param pSAREA       Pointer to the SAREA.
+ * \param fd           Device handle for the DRM.
+ * \param extensions   ??
+ * \param driver_modes  Returns modes suppoted by the driver
+ * \param loaderPrivate  ??
+ * 
+ * \note There is no need to check the minimum API version in this
+ * function.  Since the name of this function is versioned, it is
+ * impossible for a loader that is too old to even load this driver.
+ */
+static __DRIscreen *
+driCreateNewScreen(int scrn,
+		   const __DRIversion *ddx_version,
+		   const __DRIversion *dri_version,
+		   const __DRIversion *drm_version,
+		   const __DRIframebuffer *frame_buffer,
+		   drmAddress pSAREA, int fd, 
+		   const __DRIextension **extensions,
+		   const __DRIconfig ***driver_modes,
+		   void *loaderPrivate)
+{
+    static const __DRIextension *emptyExtensionList[] = { NULL };
+    __DRIscreen *psp;
+
+    (void) loaderPrivate;
+
+    if (driDriverAPI.InitScreen == NULL)
+	return NULL;
+
+    psp = calloc(1, sizeof *psp);
+    if (!psp)
+	return NULL;
+
+    setupLoaderExtensions(psp, extensions);
+
+    /*
+    ** NOT_DONE: This is used by the X server to detect when the client
+    ** has died while holding the drawable lock.  The client sets the
+    ** drawable lock to this value.
+    */
+    psp->drawLockID = 1;
+
+    psp->drm_version = *drm_version;
+    psp->ddx_version = *ddx_version;
+    psp->dri_version = *dri_version;
+
+    psp->pSAREA = pSAREA;
+    psp->lock = (drmLock *) &psp->pSAREA->lock;
+
+    psp->pFB = frame_buffer->base;
+    psp->fbSize = frame_buffer->size;
+    psp->fbStride = frame_buffer->stride;
+    psp->fbWidth = frame_buffer->width;
+    psp->fbHeight = frame_buffer->height;
+    psp->devPrivSize = frame_buffer->dev_priv_size;
+    psp->pDevPriv = frame_buffer->dev_priv;
+    psp->fbBPP = psp->fbStride * 8 / frame_buffer->width;
+
+    psp->extensions = emptyExtensionList;
+    psp->fd = fd;
+    psp->myNum = scrn;
+    psp->dri2.enabled = GL_FALSE;
+
+    psp->DriverAPI = driDriverAPI;
+    psp->api_mask = (1 << __DRI_API_OPENGL);
+
+    *driver_modes = driDriverAPI.InitScreen(psp);
+    if (*driver_modes == NULL) {
+	free(psp);
+	return NULL;
+    }
+
+    return psp;
+}
+
+/**
+ * DRI2
+ */
+static __DRIscreen *
+dri2CreateNewScreen(int scrn, int fd,
+		    const __DRIextension **extensions,
+		    const __DRIconfig ***driver_configs, void *data)
+{
+    static const __DRIextension *emptyExtensionList[] = { NULL };
+    __DRIscreen *psp;
+    drmVersionPtr version;
+
+    if (driDriverAPI.InitScreen2 == NULL)
+        return NULL;
+
+    psp = calloc(1, sizeof(*psp));
+    if (!psp)
+	return NULL;
+
+    setupLoaderExtensions(psp, extensions);
+
+    version = drmGetVersion(fd);
+    if (version) {
+	psp->drm_version.major = version->version_major;
+	psp->drm_version.minor = version->version_minor;
+	psp->drm_version.patch = version->version_patchlevel;
+	drmFreeVersion(version);
+    }
+
+    psp->extensions = emptyExtensionList;
+    psp->fd = fd;
+    psp->myNum = scrn;
+    psp->dri2.enabled = GL_TRUE;
+
+    psp->DriverAPI = driDriverAPI;
+    psp->api_mask = (1 << __DRI_API_OPENGL);
+    *driver_configs = driDriverAPI.InitScreen2(psp);
+    if (*driver_configs == NULL) {
+	free(psp);
+	return NULL;
+    }
+
+    psp->DriverAPI = driDriverAPI;
+    psp->loaderPrivate = data;
+
+    driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions,
+		       __dri2NConfigOptions);
+    driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum,
+			"dri2");
+
+    return psp;
+}
+
+static const __DRIextension **driGetExtensions(__DRIscreen *psp)
+{
+    return psp->extensions;
+}
+
+/** Core interface */
+const __DRIcoreExtension driCoreExtension = {
+    { __DRI_CORE, __DRI_CORE_VERSION },
+    NULL,
+    driDestroyScreen,
+    driGetExtensions,
+    driGetConfigAttrib,
+    driIndexConfigAttrib,
+    NULL,
+    driDestroyDrawable,
+    driSwapBuffers,
+    NULL,
+    driCopyContext,
+    driDestroyContext,
+    driBindContext,
+    driUnbindContext
+};
+
+/** Legacy DRI interface */
+const __DRIlegacyExtension driLegacyExtension = {
+    { __DRI_LEGACY, __DRI_LEGACY_VERSION },
+    driCreateNewScreen,
+    driCreateNewDrawable,
+    driCreateNewContext,
+};
+
+/** DRI2 interface */
+const __DRIdri2Extension driDRI2Extension = {
+    { __DRI_DRI2, __DRI_DRI2_VERSION },
+    dri2CreateNewScreen,
+    dri2CreateNewDrawable,
+    dri2CreateNewContext,
+    dri2GetAPIMask,
+    dri2CreateNewContextForAPI,
+    dri2AllocateBuffer,
+    dri2ReleaseBuffer
+};
+
+const __DRI2configQueryExtension dri2ConfigQueryExtension = {
+   { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION },
+   dri2ConfigQueryb,
+   dri2ConfigQueryi,
+   dri2ConfigQueryf,
+};
+
+/**
+ * Calculate amount of swap interval used between GLX buffer swaps.
+ * 
+ * The usage value, on the range [0,max], is the fraction of total swap
+ * interval time used between GLX buffer swaps is calculated.
+ *
+ *            \f$p = t_d / (i * t_r)\f$
+ * 
+ * Where \f$t_d\f$ is the time since the last GLX buffer swap, \f$i\f$ is the
+ * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time
+ * required for a single vertical refresh period (as returned by \c
+ * glXGetMscRateOML).
+ * 
+ * See the documentation for the GLX_MESA_swap_frame_usage extension for more
+ * details.
+ *
+ * \param   dPriv  Pointer to the private drawable structure.
+ * \return  If less than a single swap interval time period was required
+ *          between GLX buffer swaps, a number greater than 0 and less than
+ *          1.0 is returned.  If exactly one swap interval time period is
+ *          required, 1.0 is returned, and if more than one is required then
+ *          a number greater than 1.0 will be returned.
+ *
+ * \sa glXSwapIntervalSGI glXGetMscRateOML
+ * 
+ * \todo Instead of caching the \c glXGetMscRateOML function pointer, would it
+ *       be possible to cache the sync rate?
+ */
+float
+driCalculateSwapUsage( __DRIdrawable *dPriv, int64_t last_swap_ust,
+		       int64_t current_ust )
+{
+   int32_t   n;
+   int32_t   d;
+   int       interval;
+   float     usage = 1.0;
+   __DRIscreen *psp = dPriv->driScreenPriv;
+
+   if ( (*psp->systemTime->getMSCRate)(dPriv, &n, &d, dPriv->loaderPrivate) ) {
+      interval = (dPriv->swap_interval != 0) ? dPriv->swap_interval : 1;
+
+
+      /* We want to calculate
+       * (current_UST - last_swap_UST) / (interval * us_per_refresh).  We get
+       * current_UST by calling __glXGetUST.  last_swap_UST is stored in
+       * dPriv->swap_ust.  interval has already been calculated.
+       *
+       * The only tricky part is us_per_refresh.  us_per_refresh is
+       * 1000000 / MSC_rate.  We know the MSC_rate is n / d.  We can flip it
+       * around and say us_per_refresh = 1000000 * d / n.  Since this goes in
+       * the denominator of the final calculation, we calculate
+       * (interval * 1000000 * d) and move n into the numerator.
+       */
+
+      usage = (current_ust - last_swap_ust);
+      usage *= n;
+      usage /= (interval * d);
+      usage /= 1000000.0;
+   }
+   
+   return usage;
+}
+
+void
+dri2InvalidateDrawable(__DRIdrawable *drawable)
+{
+    drawable->dri2.stamp++;
+}
+
+/*@}*/
diff --git a/mesalib/src/mesa/drivers/dri/common/dri_util.h b/mesalib/src/mesa/drivers/dri/common/dri_util.h
index 8d2a38524..3d3d5c9cd 100644
--- a/mesalib/src/mesa/drivers/dri/common/dri_util.h
+++ b/mesalib/src/mesa/drivers/dri/common/dri_util.h
@@ -1,563 +1,563 @@
-/*

- * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.

- * All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the

- * "Software"), to deal in the Software without restriction, including

- * without limitation the rights to use, copy, modify, merge, publish,

- * distribute, sub license, and/or sell copies of the Software, and to

- * permit persons to whom the Software is furnished to do so, subject to

- * the following conditions:

- * 

- * The above copyright notice and this permission notice (including the

- * next paragraph) shall be included in all copies or substantial portions

- * of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

- * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR

- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/**

- * \file dri_util.h

- * DRI utility functions definitions.

- *

- * This module acts as glue between GLX and the actual hardware driver.  A DRI

- * driver doesn't really \e have to use any of this - it's optional.  But, some

- * useful stuff is done here that otherwise would have to be duplicated in most

- * drivers.

- * 

- * Basically, these utility functions take care of some of the dirty details of

- * screen initialization, context creation, context binding, DRM setup, etc.

- *

- * These functions are compiled into each DRI driver so libGL.so knows nothing

- * about them.

- *

- * \sa dri_util.c.

- * 

- * \author Kevin E. Martin <kevin@precisioninsight.com>

- * \author Brian Paul <brian@precisioninsight.com>

- */

-

-#ifndef _DRI_UTIL_H_

-#define _DRI_UTIL_H_

-

-#include <GL/gl.h>

-#include <drm.h>

-#include <drm_sarea.h>

-#include <xf86drm.h>

-#include "xmlconfig.h"

-#include "main/glheader.h"

-#include "main/mtypes.h"

-#include "GL/internal/dri_interface.h"

-

-#define GLX_BAD_CONTEXT                    5

-

-typedef struct __DRIswapInfoRec        __DRIswapInfo;

-

-/**

- * Extensions.

- */

-extern const __DRIlegacyExtension driLegacyExtension;

-extern const __DRIcoreExtension driCoreExtension;

-extern const __DRIdri2Extension driDRI2Extension;

-extern const __DRIextension driReadDrawableExtension;

-extern const __DRIcopySubBufferExtension driCopySubBufferExtension;

-extern const __DRIswapControlExtension driSwapControlExtension;

-extern const __DRImediaStreamCounterExtension driMediaStreamCounterExtension;

-extern const __DRI2configQueryExtension dri2ConfigQueryExtension;

-

-/**

- * Used by DRI_VALIDATE_DRAWABLE_INFO

- */

-#define DRI_VALIDATE_DRAWABLE_INFO_ONCE(pDrawPriv)              \

-    do {                                                        \

-	if (*(pDrawPriv->pStamp) != pDrawPriv->lastStamp) {     \

-	    __driUtilUpdateDrawableInfo(pDrawPriv);             \

-	}                                                       \

-    } while (0)

-

-

-/**

- * Utility macro to validate the drawable information.

- *

- * See __DRIdrawable::pStamp and __DRIdrawable::lastStamp.

- */

-#define DRI_VALIDATE_DRAWABLE_INFO(psp, pdp)                            \

-do {                                                                    \

-    while (*(pdp->pStamp) != pdp->lastStamp) {                          \

-        register unsigned int hwContext = psp->pSAREA->lock.lock &      \

-		     ~(DRM_LOCK_HELD | DRM_LOCK_CONT);                  \

-	DRM_UNLOCK(psp->fd, &psp->pSAREA->lock, hwContext);             \

-                                                                        \

-	DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);     \

-	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \

-	DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);   \

-                                                                        \

-	DRM_LIGHT_LOCK(psp->fd, &psp->pSAREA->lock, hwContext);         \

-    }                                                                   \

-} while (0)

-

-/**

- * Same as above, but for two drawables simultaneously.

- *

- */

-

-#define DRI_VALIDATE_TWO_DRAWABLES_INFO(psp, pdp, prp)			\

-do {								\

-    while (*((pdp)->pStamp) != (pdp)->lastStamp ||			\

-	   *((prp)->pStamp) != (prp)->lastStamp) {			\

-        register unsigned int hwContext = (psp)->pSAREA->lock.lock &	\

-	    ~(DRM_LOCK_HELD | DRM_LOCK_CONT);				\

-	DRM_UNLOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);		\

-									\

-	DRM_SPINLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID);	\

-	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \

-	DRI_VALIDATE_DRAWABLE_INFO_ONCE(prp);				\

-	DRM_SPINUNLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID); \

-									\

-	DRM_LIGHT_LOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);	\

-    }                                                                   \

-} while (0)

-

-

-/**

- * Driver callback functions.

- *

- * Each DRI driver must have one of these structures with all the pointers set

- * to appropriate functions within the driver.

- * 

- * When glXCreateContext() is called, for example, it'll call a helper function

- * dri_util.c which in turn will jump through the \a CreateContext pointer in

- * this structure.

- */

-struct __DriverAPIRec {

-    const __DRIconfig **(*InitScreen) (__DRIscreen * priv);

-

-    /**

-     * Screen destruction callback

-     */

-    void (*DestroyScreen)(__DRIscreen *driScrnPriv);

-

-    /**

-     * Context creation callback

-     */	    	    

-    GLboolean (*CreateContext)(gl_api api,

-			       const struct gl_config *glVis,

-			       __DRIcontext *driContextPriv,

-                               void *sharedContextPrivate);

-

-    /**

-     * Context destruction callback

-     */

-    void (*DestroyContext)(__DRIcontext *driContextPriv);

-

-    /**

-     * Buffer (drawable) creation callback

-     */

-    GLboolean (*CreateBuffer)(__DRIscreen *driScrnPriv,

-                              __DRIdrawable *driDrawPriv,

-                              const struct gl_config *glVis,

-                              GLboolean pixmapBuffer);

-    

-    /**

-     * Buffer (drawable) destruction callback

-     */

-    void (*DestroyBuffer)(__DRIdrawable *driDrawPriv);

-

-    /**

-     * Buffer swapping callback 

-     */

-    void (*SwapBuffers)(__DRIdrawable *driDrawPriv);

-

-    /**

-     * Context activation callback

-     */

-    GLboolean (*MakeCurrent)(__DRIcontext *driContextPriv,

-                             __DRIdrawable *driDrawPriv,

-                             __DRIdrawable *driReadPriv);

-

-    /**

-     * Context unbinding callback

-     */

-    GLboolean (*UnbindContext)(__DRIcontext *driContextPriv);

-  

-    /**

-     * Retrieves statistics about buffer swap operations.  Required if

-     * GLX_OML_sync_control or GLX_MESA_swap_frame_usage is supported.

-     */

-    int (*GetSwapInfo)( __DRIdrawable *dPriv, __DRIswapInfo * sInfo );

-

-

-    /**

-     * These are required if GLX_OML_sync_control is supported.

-     */

-    /*@{*/

-    int (*WaitForMSC)( __DRIdrawable *priv, int64_t target_msc, 

-		       int64_t divisor, int64_t remainder,

-		       int64_t * msc );

-    int (*WaitForSBC)( __DRIdrawable *priv, int64_t target_sbc,

-		       int64_t * msc, int64_t * sbc );

-

-    int64_t (*SwapBuffersMSC)( __DRIdrawable *priv, int64_t target_msc,

-			       int64_t divisor, int64_t remainder );

-    /*@}*/

-    void (*CopySubBuffer)(__DRIdrawable *driDrawPriv,

-			  int x, int y, int w, int h);

-

-    /**

-     * New version of GetMSC so we can pass drawable data to the low

-     * level DRM driver (e.g. pipe info).  Required if

-     * GLX_SGI_video_sync or GLX_OML_sync_control is supported.

-     */

-    int (*GetDrawableMSC) ( __DRIscreen * priv,

-			    __DRIdrawable *drawablePrivate,

-			    int64_t *count);

-

-

-

-    /* DRI2 Entry point */

-    const __DRIconfig **(*InitScreen2) (__DRIscreen * priv);

-

-    __DRIbuffer *(*AllocateBuffer) (__DRIscreen *screenPrivate,

-				    unsigned int attachment,

-				    unsigned int format,

-				    int width, int height);

-    void (*ReleaseBuffer) (__DRIscreen *screenPrivate, __DRIbuffer *buffer);

-};

-

-extern const struct __DriverAPIRec driDriverAPI;

-

-

-struct __DRIswapInfoRec {

-    /** 

-     * Number of swapBuffers operations that have been *completed*. 

-     */

-    uint64_t swap_count;

-

-    /**

-     * Unadjusted system time of the last buffer swap.  This is the time

-     * when the swap completed, not the time when swapBuffers was called.

-     */

-    int64_t   swap_ust;

-

-    /**

-     * Number of swap operations that occurred after the swap deadline.  That

-     * is if a swap happens more than swap_interval frames after the previous

-     * swap, it has missed its deadline.  If swap_interval is 0, then the

-     * swap deadline is 1 frame after the previous swap.

-     */

-    uint64_t swap_missed_count;

-

-    /**

-     * Amount of time used by the last swap that missed its deadline.  This

-     * is calculated as (__glXGetUST() - swap_ust) / (swap_interval * 

-     * time_for_single_vrefresh)).  If the actual value of swap_interval is

-     * 0, then 1 is used instead.  If swap_missed_count is non-zero, this

-     * should be greater-than 1.0.

-     */

-    float     swap_missed_usage;

-};

-

-

-/**

- * Per-drawable private DRI driver information.

- */

-struct __DRIdrawableRec {

-    /**

-     * Kernel drawable handle

-     */

-    drm_drawable_t hHWDrawable;

-

-    /**

-     * Driver's private drawable information.  

-     *

-     * This structure is opaque.

-     */

-    void *driverPrivate;

-

-    /**

-     * Private data from the loader.  We just hold on to it and pass

-     * it back when calling into loader provided functions.

-     */

-    void *loaderPrivate;

-

-    /**

-     * Reference count for number of context's currently bound to this

-     * drawable.  

-     *

-     * Once it reaches zero, the drawable can be destroyed.

-     *

-     * \note This behavior will change with GLX 1.3.

-     */

-    int refcount;

-

-    /**

-     * Index of this drawable information in the SAREA.

-     */

-    unsigned int index;

-

-    /**

-     * Pointer to the "drawable has changed ID" stamp in the SAREA (or

-     * to dri2.stamp if DRI2 is being used).

-     */

-    unsigned int *pStamp;

-

-    /**

-     * Last value of the stamp.

-     *

-     * If this differs from the value stored at __DRIdrawable::pStamp,

-     * then the drawable information has been modified by the X server, and the

-     * drawable information (below) should be retrieved from the X server.

-     */

-    unsigned int lastStamp;

-

-    /**

-     * \name Drawable 

-     *

-     * Drawable information used in software fallbacks.

-     */

-    /*@{*/

-    int x;

-    int y;

-    int w;

-    int h;

-    int numClipRects;

-    drm_clip_rect_t *pClipRects;

-    /*@}*/

-

-    /**

-     * \name Back and depthbuffer

-     *

-     * Information about the back and depthbuffer where different from above.

-     */

-    /*@{*/

-    int backX;

-    int backY;

-    int backClipRectType;

-    int numBackClipRects;

-    drm_clip_rect_t *pBackClipRects;

-    /*@}*/

-

-    /**

-     * \name Vertical blank tracking information

-     * Used for waiting on vertical blank events.

-     */

-    /*@{*/

-    unsigned int vblSeq;

-    unsigned int vblFlags;

-    /*@}*/

-

-    /**

-     * \name Monotonic MSC tracking

-     *

-     * Low level driver is responsible for updating msc_base and

-     * vblSeq values so that higher level code can calculate

-     * a new msc value or msc target for a WaitMSC call.  The new value

-     * will be:

-     *   msc = msc_base + get_vblank_count() - vblank_base;

-     *

-     * And for waiting on a value, core code will use:

-     *   actual_target = target_msc - msc_base + vblank_base;

-     */

-    /*@{*/

-    int64_t vblank_base;

-    int64_t msc_base;

-    /*@}*/

-

-    /**

-     * Pointer to context to which this drawable is currently bound.

-     */

-    __DRIcontext *driContextPriv;

-

-    /**

-     * Pointer to screen on which this drawable was created.

-     */

-    __DRIscreen *driScreenPriv;

-

-    /**

-     * Controls swap interval as used by GLX_SGI_swap_control and

-     * GLX_MESA_swap_control.

-     */

-    unsigned int swap_interval;

-

-    struct {

-	unsigned int stamp;

-	drm_clip_rect_t clipRect;

-    } dri2;

-};

-

-/**

- * Per-context private driver information.

- */

-struct __DRIcontextRec {

-    /**

-     * Kernel context handle used to access the device lock.

-     */

-    drm_context_t hHWContext;

-

-    /**

-     * Device driver's private context data.  This structure is opaque.

-     */

-    void *driverPrivate;

-

-    /**

-     * Pointer to drawable currently bound to this context for drawing.

-     */

-    __DRIdrawable *driDrawablePriv;

-

-    /**

-     * Pointer to drawable currently bound to this context for reading.

-     */

-    __DRIdrawable *driReadablePriv;

-

-    /**

-     * Pointer to screen on which this context was created.

-     */

-    __DRIscreen *driScreenPriv;

-

-    /**

-     * The loaders's private context data.  This structure is opaque.

-     */

-    void *loaderPrivate;

-

-    struct {

-	int draw_stamp;

-	int read_stamp;

-    } dri2;

-};

-

-/**

- * Per-screen private driver information.

- */

-struct __DRIscreenRec {

-    /**

-     * Current screen's number

-     */

-    int myNum;

-

-    /**

-     * Callback functions into the hardware-specific DRI driver code.

-     */

-    struct __DriverAPIRec DriverAPI;

-

-    const __DRIextension **extensions;

-    /**

-     * DDX / 2D driver version information.

-     */

-    __DRIversion ddx_version;

-

-    /**

-     * DRI X extension version information.

-     */

-    __DRIversion dri_version;

-

-    /**

-     * DRM (kernel module) version information.

-     */

-    __DRIversion drm_version;

-

-    /**

-     * ID used when the client sets the drawable lock.

-     *

-     * The X server uses this value to detect if the client has died while

-     * holding the drawable lock.

-     */

-    int drawLockID;

-

-    /**

-     * File descriptor returned when the kernel device driver is opened.

-     * 

-     * Used to:

-     *   - authenticate client to kernel

-     *   - map the frame buffer, SAREA, etc.

-     *   - close the kernel device driver

-     */

-    int fd;

-

-    /**

-     * SAREA pointer 

-     *

-     * Used to access:

-     *   - the device lock

-     *   - the device-independent per-drawable and per-context(?) information

-     */

-    drm_sarea_t *pSAREA;

-

-    /**

-     * \name Direct frame buffer access information 

-     * Used for software fallbacks.

-     */

-    /*@{*/

-    unsigned char *pFB;

-    int fbSize;

-    int fbOrigin;

-    int fbStride;

-    int fbWidth;

-    int fbHeight;

-    int fbBPP;

-    /*@}*/

-

-    /**

-     * \name Device-dependent private information (stored in the SAREA).

-     *

-     * This data is accessed by the client driver only.

-     */

-    /*@{*/

-    void *pDevPriv;

-    int devPrivSize;

-    /*@}*/

-

-    /**

-     * Device-dependent private information (not stored in the SAREA).

-     * 

-     * This pointer is never touched by the DRI layer.

-     */

-#ifdef __cplusplus

-    void *priv;

-#else

-    void *private;

-#endif

-

-    /* Extensions provided by the loader. */

-    const __DRIgetDrawableInfoExtension *getDrawableInfo;

-    const __DRIsystemTimeExtension *systemTime;

-    const __DRIdamageExtension *damage;

-

-    struct {

-	/* Flag to indicate that this is a DRI2 screen.  Many of the above

-	 * fields will not be valid or initializaed in that case. */

-	int enabled;

-	__DRIdri2LoaderExtension *loader;

-	__DRIimageLookupExtension *image;

-	__DRIuseInvalidateExtension *useInvalidate;

-    } dri2;

-

-    /* The lock actually in use, old sarea or DRI2 */

-    drmLock *lock;

-

-    driOptionCache optionInfo;

-    driOptionCache optionCache;

-   unsigned int api_mask;

-   void *loaderPrivate;

-};

-

-extern void

-__driUtilUpdateDrawableInfo(__DRIdrawable *pdp);

-

-extern float

-driCalculateSwapUsage( __DRIdrawable *dPriv,

-		       int64_t last_swap_ust, int64_t current_ust );

-

-extern GLint

-driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 );

-

-extern void

-dri2InvalidateDrawable(__DRIdrawable *drawable);

-

-#endif /* _DRI_UTIL_H_ */

+/*
+ * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file dri_util.h
+ * DRI utility functions definitions.
+ *
+ * This module acts as glue between GLX and the actual hardware driver.  A DRI
+ * driver doesn't really \e have to use any of this - it's optional.  But, some
+ * useful stuff is done here that otherwise would have to be duplicated in most
+ * drivers.
+ * 
+ * Basically, these utility functions take care of some of the dirty details of
+ * screen initialization, context creation, context binding, DRM setup, etc.
+ *
+ * These functions are compiled into each DRI driver so libGL.so knows nothing
+ * about them.
+ *
+ * \sa dri_util.c.
+ * 
+ * \author Kevin E. Martin <kevin@precisioninsight.com>
+ * \author Brian Paul <brian@precisioninsight.com>
+ */
+
+#ifndef _DRI_UTIL_H_
+#define _DRI_UTIL_H_
+
+#include <GL/gl.h>
+#include <drm.h>
+#include <drm_sarea.h>
+#include <xf86drm.h>
+#include "xmlconfig.h"
+#include "main/glheader.h"
+#include "main/mtypes.h"
+#include "GL/internal/dri_interface.h"
+
+#define GLX_BAD_CONTEXT                    5
+
+typedef struct __DRIswapInfoRec        __DRIswapInfo;
+
+/**
+ * Extensions.
+ */
+extern const __DRIlegacyExtension driLegacyExtension;
+extern const __DRIcoreExtension driCoreExtension;
+extern const __DRIdri2Extension driDRI2Extension;
+extern const __DRIextension driReadDrawableExtension;
+extern const __DRIcopySubBufferExtension driCopySubBufferExtension;
+extern const __DRIswapControlExtension driSwapControlExtension;
+extern const __DRImediaStreamCounterExtension driMediaStreamCounterExtension;
+extern const __DRI2configQueryExtension dri2ConfigQueryExtension;
+
+/**
+ * Used by DRI_VALIDATE_DRAWABLE_INFO
+ */
+#define DRI_VALIDATE_DRAWABLE_INFO_ONCE(pDrawPriv)              \
+    do {                                                        \
+	if (*(pDrawPriv->pStamp) != pDrawPriv->lastStamp) {     \
+	    __driUtilUpdateDrawableInfo(pDrawPriv);             \
+	}                                                       \
+    } while (0)
+
+
+/**
+ * Utility macro to validate the drawable information.
+ *
+ * See __DRIdrawable::pStamp and __DRIdrawable::lastStamp.
+ */
+#define DRI_VALIDATE_DRAWABLE_INFO(psp, pdp)                            \
+do {                                                                    \
+    while (*(pdp->pStamp) != pdp->lastStamp) {                          \
+        register unsigned int hwContext = psp->pSAREA->lock.lock &      \
+		     ~(DRM_LOCK_HELD | DRM_LOCK_CONT);                  \
+	DRM_UNLOCK(psp->fd, &psp->pSAREA->lock, hwContext);             \
+                                                                        \
+	DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);     \
+	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \
+	DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);   \
+                                                                        \
+	DRM_LIGHT_LOCK(psp->fd, &psp->pSAREA->lock, hwContext);         \
+    }                                                                   \
+} while (0)
+
+/**
+ * Same as above, but for two drawables simultaneously.
+ *
+ */
+
+#define DRI_VALIDATE_TWO_DRAWABLES_INFO(psp, pdp, prp)			\
+do {								\
+    while (*((pdp)->pStamp) != (pdp)->lastStamp ||			\
+	   *((prp)->pStamp) != (prp)->lastStamp) {			\
+        register unsigned int hwContext = (psp)->pSAREA->lock.lock &	\
+	    ~(DRM_LOCK_HELD | DRM_LOCK_CONT);				\
+	DRM_UNLOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);		\
+									\
+	DRM_SPINLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID);	\
+	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \
+	DRI_VALIDATE_DRAWABLE_INFO_ONCE(prp);				\
+	DRM_SPINUNLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID); \
+									\
+	DRM_LIGHT_LOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);	\
+    }                                                                   \
+} while (0)
+
+
+/**
+ * Driver callback functions.
+ *
+ * Each DRI driver must have one of these structures with all the pointers set
+ * to appropriate functions within the driver.
+ * 
+ * When glXCreateContext() is called, for example, it'll call a helper function
+ * dri_util.c which in turn will jump through the \a CreateContext pointer in
+ * this structure.
+ */
+struct __DriverAPIRec {
+    const __DRIconfig **(*InitScreen) (__DRIscreen * priv);
+
+    /**
+     * Screen destruction callback
+     */
+    void (*DestroyScreen)(__DRIscreen *driScrnPriv);
+
+    /**
+     * Context creation callback
+     */	    	    
+    GLboolean (*CreateContext)(gl_api api,
+			       const struct gl_config *glVis,
+			       __DRIcontext *driContextPriv,
+                               void *sharedContextPrivate);
+
+    /**
+     * Context destruction callback
+     */
+    void (*DestroyContext)(__DRIcontext *driContextPriv);
+
+    /**
+     * Buffer (drawable) creation callback
+     */
+    GLboolean (*CreateBuffer)(__DRIscreen *driScrnPriv,
+                              __DRIdrawable *driDrawPriv,
+                              const struct gl_config *glVis,
+                              GLboolean pixmapBuffer);
+    
+    /**
+     * Buffer (drawable) destruction callback
+     */
+    void (*DestroyBuffer)(__DRIdrawable *driDrawPriv);
+
+    /**
+     * Buffer swapping callback 
+     */
+    void (*SwapBuffers)(__DRIdrawable *driDrawPriv);
+
+    /**
+     * Context activation callback
+     */
+    GLboolean (*MakeCurrent)(__DRIcontext *driContextPriv,
+                             __DRIdrawable *driDrawPriv,
+                             __DRIdrawable *driReadPriv);
+
+    /**
+     * Context unbinding callback
+     */
+    GLboolean (*UnbindContext)(__DRIcontext *driContextPriv);
+  
+    /**
+     * Retrieves statistics about buffer swap operations.  Required if
+     * GLX_OML_sync_control or GLX_MESA_swap_frame_usage is supported.
+     */
+    int (*GetSwapInfo)( __DRIdrawable *dPriv, __DRIswapInfo * sInfo );
+
+
+    /**
+     * These are required if GLX_OML_sync_control is supported.
+     */
+    /*@{*/
+    int (*WaitForMSC)( __DRIdrawable *priv, int64_t target_msc, 
+		       int64_t divisor, int64_t remainder,
+		       int64_t * msc );
+    int (*WaitForSBC)( __DRIdrawable *priv, int64_t target_sbc,
+		       int64_t * msc, int64_t * sbc );
+
+    int64_t (*SwapBuffersMSC)( __DRIdrawable *priv, int64_t target_msc,
+			       int64_t divisor, int64_t remainder );
+    /*@}*/
+    void (*CopySubBuffer)(__DRIdrawable *driDrawPriv,
+			  int x, int y, int w, int h);
+
+    /**
+     * New version of GetMSC so we can pass drawable data to the low
+     * level DRM driver (e.g. pipe info).  Required if
+     * GLX_SGI_video_sync or GLX_OML_sync_control is supported.
+     */
+    int (*GetDrawableMSC) ( __DRIscreen * priv,
+			    __DRIdrawable *drawablePrivate,
+			    int64_t *count);
+
+
+
+    /* DRI2 Entry point */
+    const __DRIconfig **(*InitScreen2) (__DRIscreen * priv);
+
+    __DRIbuffer *(*AllocateBuffer) (__DRIscreen *screenPrivate,
+				    unsigned int attachment,
+				    unsigned int format,
+				    int width, int height);
+    void (*ReleaseBuffer) (__DRIscreen *screenPrivate, __DRIbuffer *buffer);
+};
+
+extern const struct __DriverAPIRec driDriverAPI;
+
+
+struct __DRIswapInfoRec {
+    /** 
+     * Number of swapBuffers operations that have been *completed*. 
+     */
+    uint64_t swap_count;
+
+    /**
+     * Unadjusted system time of the last buffer swap.  This is the time
+     * when the swap completed, not the time when swapBuffers was called.
+     */
+    int64_t   swap_ust;
+
+    /**
+     * Number of swap operations that occurred after the swap deadline.  That
+     * is if a swap happens more than swap_interval frames after the previous
+     * swap, it has missed its deadline.  If swap_interval is 0, then the
+     * swap deadline is 1 frame after the previous swap.
+     */
+    uint64_t swap_missed_count;
+
+    /**
+     * Amount of time used by the last swap that missed its deadline.  This
+     * is calculated as (__glXGetUST() - swap_ust) / (swap_interval * 
+     * time_for_single_vrefresh)).  If the actual value of swap_interval is
+     * 0, then 1 is used instead.  If swap_missed_count is non-zero, this
+     * should be greater-than 1.0.
+     */
+    float     swap_missed_usage;
+};
+
+
+/**
+ * Per-drawable private DRI driver information.
+ */
+struct __DRIdrawableRec {
+    /**
+     * Kernel drawable handle
+     */
+    drm_drawable_t hHWDrawable;
+
+    /**
+     * Driver's private drawable information.  
+     *
+     * This structure is opaque.
+     */
+    void *driverPrivate;
+
+    /**
+     * Private data from the loader.  We just hold on to it and pass
+     * it back when calling into loader provided functions.
+     */
+    void *loaderPrivate;
+
+    /**
+     * Reference count for number of context's currently bound to this
+     * drawable.  
+     *
+     * Once it reaches zero, the drawable can be destroyed.
+     *
+     * \note This behavior will change with GLX 1.3.
+     */
+    int refcount;
+
+    /**
+     * Index of this drawable information in the SAREA.
+     */
+    unsigned int index;
+
+    /**
+     * Pointer to the "drawable has changed ID" stamp in the SAREA (or
+     * to dri2.stamp if DRI2 is being used).
+     */
+    unsigned int *pStamp;
+
+    /**
+     * Last value of the stamp.
+     *
+     * If this differs from the value stored at __DRIdrawable::pStamp,
+     * then the drawable information has been modified by the X server, and the
+     * drawable information (below) should be retrieved from the X server.
+     */
+    unsigned int lastStamp;
+
+    /**
+     * \name Drawable 
+     *
+     * Drawable information used in software fallbacks.
+     */
+    /*@{*/
+    int x;
+    int y;
+    int w;
+    int h;
+    int numClipRects;
+    drm_clip_rect_t *pClipRects;
+    /*@}*/
+
+    /**
+     * \name Back and depthbuffer
+     *
+     * Information about the back and depthbuffer where different from above.
+     */
+    /*@{*/
+    int backX;
+    int backY;
+    int backClipRectType;
+    int numBackClipRects;
+    drm_clip_rect_t *pBackClipRects;
+    /*@}*/
+
+    /**
+     * \name Vertical blank tracking information
+     * Used for waiting on vertical blank events.
+     */
+    /*@{*/
+    unsigned int vblSeq;
+    unsigned int vblFlags;
+    /*@}*/
+
+    /**
+     * \name Monotonic MSC tracking
+     *
+     * Low level driver is responsible for updating msc_base and
+     * vblSeq values so that higher level code can calculate
+     * a new msc value or msc target for a WaitMSC call.  The new value
+     * will be:
+     *   msc = msc_base + get_vblank_count() - vblank_base;
+     *
+     * And for waiting on a value, core code will use:
+     *   actual_target = target_msc - msc_base + vblank_base;
+     */
+    /*@{*/
+    int64_t vblank_base;
+    int64_t msc_base;
+    /*@}*/
+
+    /**
+     * Pointer to context to which this drawable is currently bound.
+     */
+    __DRIcontext *driContextPriv;
+
+    /**
+     * Pointer to screen on which this drawable was created.
+     */
+    __DRIscreen *driScreenPriv;
+
+    /**
+     * Controls swap interval as used by GLX_SGI_swap_control and
+     * GLX_MESA_swap_control.
+     */
+    unsigned int swap_interval;
+
+    struct {
+	unsigned int stamp;
+	drm_clip_rect_t clipRect;
+    } dri2;
+};
+
+/**
+ * Per-context private driver information.
+ */
+struct __DRIcontextRec {
+    /**
+     * Kernel context handle used to access the device lock.
+     */
+    drm_context_t hHWContext;
+
+    /**
+     * Device driver's private context data.  This structure is opaque.
+     */
+    void *driverPrivate;
+
+    /**
+     * Pointer to drawable currently bound to this context for drawing.
+     */
+    __DRIdrawable *driDrawablePriv;
+
+    /**
+     * Pointer to drawable currently bound to this context for reading.
+     */
+    __DRIdrawable *driReadablePriv;
+
+    /**
+     * Pointer to screen on which this context was created.
+     */
+    __DRIscreen *driScreenPriv;
+
+    /**
+     * The loaders's private context data.  This structure is opaque.
+     */
+    void *loaderPrivate;
+
+    struct {
+	int draw_stamp;
+	int read_stamp;
+    } dri2;
+};
+
+/**
+ * Per-screen private driver information.
+ */
+struct __DRIscreenRec {
+    /**
+     * Current screen's number
+     */
+    int myNum;
+
+    /**
+     * Callback functions into the hardware-specific DRI driver code.
+     */
+    struct __DriverAPIRec DriverAPI;
+
+    const __DRIextension **extensions;
+    /**
+     * DDX / 2D driver version information.
+     */
+    __DRIversion ddx_version;
+
+    /**
+     * DRI X extension version information.
+     */
+    __DRIversion dri_version;
+
+    /**
+     * DRM (kernel module) version information.
+     */
+    __DRIversion drm_version;
+
+    /**
+     * ID used when the client sets the drawable lock.
+     *
+     * The X server uses this value to detect if the client has died while
+     * holding the drawable lock.
+     */
+    int drawLockID;
+
+    /**
+     * File descriptor returned when the kernel device driver is opened.
+     * 
+     * Used to:
+     *   - authenticate client to kernel
+     *   - map the frame buffer, SAREA, etc.
+     *   - close the kernel device driver
+     */
+    int fd;
+
+    /**
+     * SAREA pointer 
+     *
+     * Used to access:
+     *   - the device lock
+     *   - the device-independent per-drawable and per-context(?) information
+     */
+    drm_sarea_t *pSAREA;
+
+    /**
+     * \name Direct frame buffer access information 
+     * Used for software fallbacks.
+     */
+    /*@{*/
+    unsigned char *pFB;
+    int fbSize;
+    int fbOrigin;
+    int fbStride;
+    int fbWidth;
+    int fbHeight;
+    int fbBPP;
+    /*@}*/
+
+    /**
+     * \name Device-dependent private information (stored in the SAREA).
+     *
+     * This data is accessed by the client driver only.
+     */
+    /*@{*/
+    void *pDevPriv;
+    int devPrivSize;
+    /*@}*/
+
+    /**
+     * Device-dependent private information (not stored in the SAREA).
+     * 
+     * This pointer is never touched by the DRI layer.
+     */
+#ifdef __cplusplus
+    void *priv;
+#else
+    void *private;
+#endif
+
+    /* Extensions provided by the loader. */
+    const __DRIgetDrawableInfoExtension *getDrawableInfo;
+    const __DRIsystemTimeExtension *systemTime;
+    const __DRIdamageExtension *damage;
+
+    struct {
+	/* Flag to indicate that this is a DRI2 screen.  Many of the above
+	 * fields will not be valid or initializaed in that case. */
+	int enabled;
+	__DRIdri2LoaderExtension *loader;
+	__DRIimageLookupExtension *image;
+	__DRIuseInvalidateExtension *useInvalidate;
+    } dri2;
+
+    /* The lock actually in use, old sarea or DRI2 */
+    drmLock *lock;
+
+    driOptionCache optionInfo;
+    driOptionCache optionCache;
+   unsigned int api_mask;
+   void *loaderPrivate;
+};
+
+extern void
+__driUtilUpdateDrawableInfo(__DRIdrawable *pdp);
+
+extern float
+driCalculateSwapUsage( __DRIdrawable *dPriv,
+		       int64_t last_swap_ust, int64_t current_ust );
+
+extern GLint
+driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 );
+
+extern void
+dri2InvalidateDrawable(__DRIdrawable *drawable);
+
+#endif /* _DRI_UTIL_H_ */
diff --git a/mesalib/src/mesa/drivers/dri/common/spantmp2.h b/mesalib/src/mesa/drivers/dri/common/spantmp2.h
index a398b778e..83cfbb164 100644
--- a/mesalib/src/mesa/drivers/dri/common/spantmp2.h
+++ b/mesalib/src/mesa/drivers/dri/common/spantmp2.h
@@ -1,936 +1,936 @@
-/*

- * Copyright 2000-2001 VA Linux Systems, Inc.

- * (C) Copyright IBM Corporation 2004

- * All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * on the rights to use, copy, modify, merge, publish, distribute, sub

- * license, and/or sell copies of the Software, and to permit persons to whom

- * the Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice (including the next

- * paragraph) shall be included in all copies or substantial portions of the

- * Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL

- * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,

- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

- * USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/**

- * \file spantmp2.h

- *

- * Template file of span read / write functions.

- *

- * \author Keith Whitwell <keithw@tungstengraphics.com>

- * \author Gareth Hughes <gareth@nvidia.com>

- * \author Ian Romanick <idr@us.ibm.com>

- */

-

-#include "main/colormac.h"

-#include "spantmp_common.h"

-

-#ifndef DBG

-#define DBG 0

-#endif

-

-#ifndef HW_READ_CLIPLOOP

-#define HW_READ_CLIPLOOP()	HW_CLIPLOOP()

-#endif

-

-#ifndef HW_WRITE_CLIPLOOP

-#define HW_WRITE_CLIPLOOP()	HW_CLIPLOOP()

-#endif

-

-#if (SPANTMP_PIXEL_FMT == GL_RGB)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)

-

-/**

- ** GL_RGB, GL_UNSIGNED_SHORT_5_6_5

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-#define INIT_MONO_PIXEL(p, color) \

-  p = PACK_COLOR_565( color[0], color[1], color[2] )

-

-#define WRITE_RGBA( _x, _y, r, g, b, a )				\

-   PUT_VALUE(_x, _y, ((((int)r & 0xf8) << 8) |				\

-		      (((int)g & 0xfc) << 3) |				\

-		      (((int)b & 0xf8) >> 3)))				\

-

-#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)

-

-#define READ_RGBA( rgba, _x, _y )					\

-   do {									\

-      GLushort p = GET_VALUE(_x, _y);					\

-      rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8;				\

-      rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc;				\

-      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\

-      rgba[3] = 0xff;							\

-   } while (0)

-

-#elif (SPANTMP_PIXEL_FMT == GL_RGB)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5_REV)

-

-/**

- ** GL_RGB, GL_UNSIGNED_SHORT_5_6_5_REV

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-#define INIT_MONO_PIXEL(p, color) \

-  p = PACK_COLOR_565_REV( color[0], color[1], color[2] )

-

-#define WRITE_RGBA( _x, _y, r, g, b, a )				\

-   PUT_VALUE(_x, _y, PACK_COLOR_565_REV( r, g, b ))

-

-#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)

-

-#define READ_RGBA( rgba, _x, _y )					\

-   do {									\

-      GLushort p = GET_VALUE(_x, _y);					\

-      p = p << 8 | p >> 8;						\

-      rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8;				\

-      rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc;				\

-      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\

-      rgba[3] = 0xff;							\

-   } while (0)

-

-#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_4_4_4_4)

-

-/**

- ** GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-#define INIT_MONO_PIXEL(p, color) \

-   p = PACK_COLOR_4444_REV(color[3], color[0], color[1], color[2])

-

-#define WRITE_RGBA( _x, _y, r, g, b, a )				\

-   PUT_VALUE(_x, _y, PACK_COLOR_4444_REV(a, r, g, b))			\

-

-#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)

-

-#define READ_RGBA( rgba, _x, _y )					\

-   do {									\

-      GLushort p = GET_VALUE(_x, _y);					\

-      rgba[0] = ((p >> 0) & 0xf) * 0x11;				\

-      rgba[1] = ((p >> 12) & 0xf) * 0x11;				\

-      rgba[2] = ((p >> 4) & 0xf) * 0x11;				\

-      rgba[3] = ((p >> 8) & 0xf) * 0x11;				\

-   } while (0)

-

-

-#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_4_4_4_4_REV)

-

-/**

- ** GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4_REV

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-#define INIT_MONO_PIXEL(p, color) \

-   p = PACK_COLOR_4444(color[3], color[0], color[1], color[2])

-

-#define WRITE_RGBA( _x, _y, r, g, b, a )				\

-   PUT_VALUE(_x, _y, PACK_COLOR_4444(a, r, g, b))			\

-

-#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)

-

-#define READ_RGBA( rgba, _x, _y )					\

-   do {									\

-      GLushort p = GET_VALUE(_x, _y);					\

-      rgba[0] = ((p >> 8) & 0xf) * 0x11;				\

-      rgba[1] = ((p >> 4) & 0xf) * 0x11;				\

-      rgba[2] = ((p >> 0) & 0xf) * 0x11;				\

-      rgba[3] = ((p >> 12) & 0xf) * 0x11;				\

-   } while (0)

-

-

-#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_1_5_5_5_REV)

-

-/**

- ** GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-#define INIT_MONO_PIXEL(p, color) \

-   p = PACK_COLOR_1555(color[3], color[0], color[1], color[2])

-

-#define WRITE_RGBA( _x, _y, r, g, b, a )				\

-   PUT_VALUE(_x, _y, PACK_COLOR_1555(a, r, g, b))			\

-

-#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)

-

-#define READ_RGBA( rgba, _x, _y )					\

-   do {									\

-      GLushort p = GET_VALUE(_x, _y);					\

-      rgba[0] = ((p >> 7) & 0xf8) * 255 / 0xf8;				\

-      rgba[1] = ((p >> 2) & 0xf8) * 255 / 0xf8;				\

-      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\

-      rgba[3] = ((p >> 15) & 0x1) * 0xff;				\

-   } while (0)

-

-#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_1_5_5_5)

-

-/**

- ** GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-#define INIT_MONO_PIXEL(p, color) \

-   p = PACK_COLOR_1555_REV(color[3], color[0], color[1], color[2])

-

-#define WRITE_RGBA( _x, _y, r, g, b, a )				\

-   PUT_VALUE(_x, _y, PACK_COLOR_1555_REV(a, r, g, b))			\

-

-#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)

-

-#define READ_RGBA( rgba, _x, _y )					\

-   do {									\

-      GLushort p = GET_VALUE(_x, _y);					\

-      p = p << 8 | p >> 8;						\

-      rgba[0] = ((p >> 7) & 0xf8) * 255 / 0xf8;				\

-      rgba[1] = ((p >> 2) & 0xf8) * 255 / 0xf8;				\

-      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\

-      rgba[3] = ((p >> 15) & 0x1) * 0xff;				\

-   } while (0)

-

-#elif (SPANTMP_PIXEL_FMT == GL_BGRA) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)

-

-/**

- ** GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (     buf + (_x) * 4 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLuint *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLuint *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-# define INIT_MONO_PIXEL(p, color)                       \

-     p = PACK_COLOR_8888(color[3], color[0], color[1], color[2]) 

-

-# define WRITE_RGBA(_x, _y, r, g, b, a)                                 \

-   PUT_VALUE(_x, _y, ((r << 16) |					\

-		      (g << 8) |					\

-		      (b << 0) |					\

-		      (a << 24)))

-

-#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)

-

-# if defined( USE_X86_ASM )

-#  define READ_RGBA(rgba, _x, _y)                                       \

-    do {                                                                \

-       GLuint p = GET_VALUE(_x, _y);					\

-       __asm__ __volatile__( "bswap	%0; rorl $8, %0"                \

-				: "=r" (p) : "0" (p) );                 \

-       ((GLuint *)rgba)[0] = p;                                         \

-    } while (0)

-# elif defined( MESA_BIG_ENDIAN )

-    /* On PowerPC with GCC 3.4.2 the shift madness below becomes a single

-     * rotlwi instruction.  It also produces good code on SPARC.

-     */

-#  define READ_RGBA( rgba, _x, _y )				        \

-     do {								\

-        GLuint p = GET_VALUE(_x, _y);					\

-        GLuint t = p;                                                   \

-        *((uint32_t *) rgba) = (t >> 24) | (p << 8);                    \

-     } while (0)

-# else

-#  define READ_RGBA( rgba, _x, _y )				        \

-     do {								\

-        GLuint p = GET_VALUE(_x, _y);					\

-	rgba[0] = (p >> 16) & 0xff;					\

-	rgba[1] = (p >>  8) & 0xff;					\

-	rgba[2] = (p >>  0) & 0xff;					\

-	rgba[3] = (p >> 24) & 0xff;					\

-     } while (0)

-# endif

-

-#elif (SPANTMP_PIXEL_FMT == GL_BGRA) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8)

-

-/**

- ** GL_BGRA, GL_UNSIGNED_INT_8_8_8_8

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (     buf + (_x) * 4 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLuint *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLuint *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-# define INIT_MONO_PIXEL(p, color)                       \

-     p = PACK_COLOR_8888(color[2], color[1], color[0], color[3]) 

-

-# define WRITE_RGBA(_x, _y, r, g, b, a)                                 \

-   PUT_VALUE(_x, _y, ((r << 8) |					\

-		      (g << 16) |					\

-		      (b << 24) |					\

-		      (a << 0)))

-

-#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)

-

-# if defined( USE_X86_ASM )

-#  define READ_RGBA(rgba, _x, _y)                                       \

-    do {                                                                \

-       GLuint p = GET_VALUE(_x, _y);					\

-       __asm__ __volatile__( "rorl $8, %0"				\

-				: "=r" (p) : "0" (p) );                 \

-       ((GLuint *)rgba)[0] = p;                                         \

-    } while (0)

-# elif defined( MESA_BIG_ENDIAN )

-    /* On PowerPC with GCC 3.4.2 the shift madness below becomes a single

-     * rotlwi instruction.  It also produces good code on SPARC.

-     */

-#  define READ_RGBA( rgba, _x, _y )				        \

-     do {								\

-        GLuint p = CPU_TO_LE32(GET_VALUE(_x, _y));                      \

-        GLuint t = p;                                                   \

-        *((uint32_t *) rgba) = (t >> 24) | (p << 8);                    \

-     } while (0)

-# else

-#  define READ_RGBA( rgba, _x, _y )				        \

-     do {								\

-        GLuint p = GET_VALUE(_x, _y);					\

-	rgba[0] = (p >>  8) & 0xff;					\

-	rgba[1] = (p >> 16) & 0xff;					\

-	rgba[2] = (p >> 24) & 0xff;					\

-	rgba[3] = (p >>  0) & 0xff;					\

-     } while (0)

-# endif

-

-#elif (SPANTMP_PIXEL_FMT == GL_BGR) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)

-

-/**

- ** GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV

- **

- ** This is really for MESA_FORMAT_XRGB8888.  The spantmp code needs to be

- ** kicked to the curb, and we need to just code-gen this.

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (     buf + (_x) * 4 + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLuint *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLuint *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-# define INIT_MONO_PIXEL(p, color)                       \

-     p = PACK_COLOR_8888(0xff, color[0], color[1], color[2])

-

-# define WRITE_RGBA(_x, _y, r, g, b, a)					\

-   PUT_VALUE(_x, _y, ((r << 16) |					\

-		      (g << 8) |					\

-		      (b << 0) |					\

-		      (0xff << 24)))

-

-#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)

-

-# if defined( USE_X86_ASM )

-#  define READ_RGBA(rgba, _x, _y)                                       \

-    do {                                                                \

-       GLuint p = GET_VALUE(_x, _y);					\

-       __asm__ __volatile__( "bswap	%0; rorl $8, %0"                \

-				: "=r" (p) : "0" (p) );                 \

-       ((GLuint *)rgba)[0] = p | 0xff000000;				\

-    } while (0)

-# elif defined( MESA_BIG_ENDIAN )

-    /* On PowerPC with GCC 3.4.2 the shift madness below becomes a single

-     * rotlwi instruction.  It also produces good code on SPARC.

-     */

-#  define READ_RGBA( rgba, _x, _y )				        \

-     do {								\

-        GLuint p = GET_VALUE(_x, _y);					\

-        *((uint32_t *) rgba) = (p << 8) | 0xff;				\

-     } while (0)

-# else

-#  define READ_RGBA( rgba, _x, _y )				        \

-     do {								\

-        GLuint p = GET_VALUE(_x, _y);					\

-	rgba[0] = (p >> 16) & 0xff;					\

-	rgba[1] = (p >>  8) & 0xff;					\

-	rgba[2] = (p >>  0) & 0xff;					\

-	rgba[3] = 0xff;							\

-     } while (0)

-# endif

-

-#elif (SPANTMP_PIXEL_FMT == GL_ALPHA) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_BYTE)

-

-/**

- ** GL_ALPHA, GL_UNSIGNED_BYTE

- **/

-

-#ifndef GET_VALUE

-#ifndef GET_PTR

-#define GET_PTR(_x, _y) (     buf + (_x) + (_y) * pitch)

-#endif

-

-#define GET_VALUE(_x, _y) *(volatile GLubyte *)(GET_PTR(_x, _y))

-#define PUT_VALUE(_x, _y, _v) *(volatile GLubyte *)(GET_PTR(_x, _y)) = (_v)

-#endif /* GET_VALUE */

-

-# define INIT_MONO_PIXEL(p, color)                       \

-     p = color[3]

-

-# define WRITE_RGBA(_x, _y, r, g, b, a)                                 \

-   PUT_VALUE(_x, _y, a | (r & 0 /* quiet warnings */))

-

-#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)

-

-#define READ_RGBA( rgba, _x, _y )				        \

-     do {								\

-        GLubyte p = GET_VALUE(_x, _y);					\

-	rgba[0] = 0;							\

-	rgba[1] = 0;							\

-	rgba[2] = 0;							\

-	rgba[3] = p;							\

-     } while (0)

-

-#else

-#error SPANTMP_PIXEL_FMT must be set to a valid value!

-#endif

-

-

-

-/**

- ** Assembly routines.

- **/

-

-#if defined( USE_MMX_ASM ) || defined( USE_SSE_ASM )

-#include "x86/read_rgba_span_x86.h"

-#include "x86/common_x86_asm.h"

-#endif

-

-static void TAG(WriteRGBASpan)( struct gl_context *ctx,

-                                struct gl_renderbuffer *rb,

-				GLuint n, GLint x, GLint y,

-				const void *values, const GLubyte mask[] )

-{

-   (void) ctx;

-

-   HW_WRITE_LOCK()

-      {

-         const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;

-	 GLint x1;

-	 GLint n1;

-	 LOCAL_VARS;

-

-	 y = Y_FLIP(y);

-

-	 HW_WRITE_CLIPLOOP()

-	    {

-	       GLint i = 0;

-	       CLIPSPAN(x,y,n,x1,n1,i);

-

-	       if (DBG) fprintf(stderr, "WriteRGBASpan %d..%d (x1 %d)\n",

-				(int)i, (int)n1, (int)x1);

-

-	       if (mask)

-	       {

-		  for (;n1>0;i++,x1++,n1--)

-		     if (mask[i])

-			WRITE_RGBA( x1, y,

-				    rgba[i][0], rgba[i][1],

-				    rgba[i][2], rgba[i][3] );

-	       }

-	       else

-	       {

-		  for (;n1>0;i++,x1++,n1--)

-		     WRITE_RGBA( x1, y,

-				 rgba[i][0], rgba[i][1],

-				 rgba[i][2], rgba[i][3] );

-	       }

-	    }

-	 HW_ENDCLIPLOOP();

-      }

-   HW_WRITE_UNLOCK();

-}

-

-static void TAG(WriteRGBSpan)( struct gl_context *ctx,

-                               struct gl_renderbuffer *rb,

-			       GLuint n, GLint x, GLint y,

-			       const void *values, const GLubyte mask[] )

-{

-   (void) ctx;

-

-   HW_WRITE_LOCK()

-      {

-         const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;

-	 GLint x1;

-	 GLint n1;

-	 LOCAL_VARS;

-

-	 y = Y_FLIP(y);

-

-	 HW_WRITE_CLIPLOOP()

-	    {

-	       GLint i = 0;

-	       CLIPSPAN(x,y,n,x1,n1,i);

-

-	       if (DBG) fprintf(stderr, "WriteRGBSpan %d..%d (x1 %d)\n",

-				(int)i, (int)n1, (int)x1);

-

-	       if (mask)

-	       {

-		  for (;n1>0;i++,x1++,n1--)

-		     if (mask[i])

-			WRITE_RGBA( x1, y, rgb[i][0], rgb[i][1], rgb[i][2], 255 );

-	       }

-	       else

-	       {

-		  for (;n1>0;i++,x1++,n1--)

-		     WRITE_RGBA( x1, y, rgb[i][0], rgb[i][1], rgb[i][2], 255 );

-	       }

-	    }

-	 HW_ENDCLIPLOOP();

-      }

-   HW_WRITE_UNLOCK();

-}

-

-static void TAG(WriteRGBAPixels)( struct gl_context *ctx,

-                                  struct gl_renderbuffer *rb,

-                                  GLuint n, const GLint x[], const GLint y[],

-                                  const void *values, const GLubyte mask[] )

-{

-   (void) ctx;

-

-   HW_WRITE_LOCK()

-      {

-         const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;

-	 GLint i;

-	 LOCAL_VARS;

-

-	 if (DBG) fprintf(stderr, "WriteRGBAPixels\n");

-

-	 HW_WRITE_CLIPLOOP()

-	    {

-	       if (mask)

-	       {

-	          for (i=0;i<n;i++)

-	          {

-		     if (mask[i]) {

-		        const int fy = Y_FLIP(y[i]);

-		        if (CLIPPIXEL(x[i],fy))

-			   WRITE_RGBA( x[i], fy,

-				       rgba[i][0], rgba[i][1],

-				       rgba[i][2], rgba[i][3] );

-		     }

-	          }

-	       }

-	       else

-	       {

-	          for (i=0;i<n;i++)

-	          {

-		     const int fy = Y_FLIP(y[i]);

-		     if (CLIPPIXEL(x[i],fy))

-			WRITE_RGBA( x[i], fy,

-				    rgba[i][0], rgba[i][1],

-				    rgba[i][2], rgba[i][3] );

-	          }

-	       }

-	    }

-	 HW_ENDCLIPLOOP();

-      }

-   HW_WRITE_UNLOCK();

-}

-

-

-static void TAG(WriteMonoRGBASpan)( struct gl_context *ctx,	

-                                    struct gl_renderbuffer *rb,

-				    GLuint n, GLint x, GLint y, 

-				    const void *value, const GLubyte mask[] )

-{

-   (void) ctx;

-

-   HW_WRITE_LOCK()

-      {

-         const GLubyte *color = (const GLubyte *) value;

-	 GLint x1;

-	 GLint n1;

-	 LOCAL_VARS;

-	 INIT_MONO_PIXEL(p, color);

-

-	 y = Y_FLIP( y );

-

-	 if (DBG) fprintf(stderr, "WriteMonoRGBASpan\n");

-

-	 HW_WRITE_CLIPLOOP()

-	    {

-	       GLint i = 0;

-	       CLIPSPAN(x,y,n,x1,n1,i);

-	       if (mask)

-	       {

-	          for (;n1>0;i++,x1++,n1--)

-		     if (mask[i])

-		        WRITE_PIXEL( x1, y, p );

-	       }

-	       else

-	       {

-	          for (;n1>0;i++,x1++,n1--)

-		     WRITE_PIXEL( x1, y, p );

-	       }

-	    }

-	 HW_ENDCLIPLOOP();

-      }

-   HW_WRITE_UNLOCK();

-}

-

-

-static void TAG(WriteMonoRGBAPixels)( struct gl_context *ctx,

-                                      struct gl_renderbuffer *rb,

-				      GLuint n,

-				      const GLint x[], const GLint y[],

-				      const void *value,

-				      const GLubyte mask[] ) 

-{

-   (void) ctx;

-

-   HW_WRITE_LOCK()

-      {

-         const GLubyte *color = (const GLubyte *) value;

-	 GLint i;

-	 LOCAL_VARS;

-	 INIT_MONO_PIXEL(p, color);

-

-	 if (DBG) fprintf(stderr, "WriteMonoRGBAPixels\n");

-

-	 HW_WRITE_CLIPLOOP()

-	    {

-	       if (mask)

-	       {

-		  for (i=0;i<n;i++)

-		     if (mask[i]) {

-			int fy = Y_FLIP(y[i]);

-			if (CLIPPIXEL( x[i], fy ))

-			   WRITE_PIXEL( x[i], fy, p );

-		     }

-	       }

-	       else

-	       {

-		  for (i=0;i<n;i++) {

-		     int fy = Y_FLIP(y[i]);

-		     if (CLIPPIXEL( x[i], fy ))

-			WRITE_PIXEL( x[i], fy, p );

-		  }

-	       }

-	    }

-	 HW_ENDCLIPLOOP();

-      }

-   HW_WRITE_UNLOCK();

-}

-

-

-static void TAG(ReadRGBASpan)( struct gl_context *ctx,

-                               struct gl_renderbuffer *rb,

-			       GLuint n, GLint x, GLint y, void *values)

-{

-   (void) ctx;

-

-   HW_READ_LOCK()

-      {

-         GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;

-	 GLint x1,n1;

-	 LOCAL_VARS;

-

-	 y = Y_FLIP(y);

-

-	 if (DBG) fprintf(stderr, "ReadRGBASpan\n");

-

-	 HW_READ_CLIPLOOP()

-	    {

-	       GLint i = 0;

-	       CLIPSPAN(x,y,n,x1,n1,i);

-	       for (;n1>0;i++,x1++,n1--)

-		  READ_RGBA( rgba[i], x1, y );

-	    }

-         HW_ENDCLIPLOOP();

-      }

-   HW_READ_UNLOCK();

-}

-

-

-#if defined(GET_PTR) && \

-   defined(USE_MMX_ASM) && \

-   (((SPANTMP_PIXEL_FMT == GL_BGRA) && \

-	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)) || \

-    ((SPANTMP_PIXEL_FMT == GL_RGB) && \

-	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)))

-static void TAG2(ReadRGBASpan,_MMX)( struct gl_context *ctx,

-                                     struct gl_renderbuffer *rb,

-                                     GLuint n, GLint x, GLint y, void *values)

-{

-#ifndef USE_INNER_EMMS

-   /* The EMMS instruction is directly in-lined here because using GCC's

-    * built-in _mm_empty function was found to utterly destroy performance.

-    */

-   __asm__ __volatile__( "emms" );

-#endif

-

-   (void) ctx;

-

-   HW_READ_LOCK()

-     {

-        GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;

-	GLint x1,n1;

-	LOCAL_VARS;

-

-	y = Y_FLIP(y);

-

-	if (DBG) fprintf(stderr, "ReadRGBASpan\n");

-

-	HW_READ_CLIPLOOP()

-	  {

-	     GLint i = 0;

-	     CLIPSPAN(x,y,n,x1,n1,i);

-

-	       {

-		  const void * src = GET_PTR( x1, y );

-#if (SPANTMP_PIXEL_FMT == GL_RGB) && \

-		  (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)

-		  _generic_read_RGBA_span_RGB565_MMX( src, rgba[i], n1 );

-#else

-		  _generic_read_RGBA_span_BGRA8888_REV_MMX( src, rgba[i], n1 );

-#endif

-	       }

-	  }

-	HW_ENDCLIPLOOP();

-     }

-   HW_READ_UNLOCK();

-#ifndef USE_INNER_EMMS

-   __asm__ __volatile__( "emms" );

-#endif

-}

-#endif

-

-

-#if defined(GET_PTR) &&	\

-   defined(USE_SSE_ASM) && \

-   (SPANTMP_PIXEL_FMT == GL_BGRA) && \

-     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)

-static void TAG2(ReadRGBASpan,_SSE2)( struct gl_context *ctx,

-                                      struct gl_renderbuffer *rb,

-                                      GLuint n, GLint x, GLint y,

-                                      void *values)

-{

-   (void) ctx;

-

-   HW_READ_LOCK()

-     {

-        GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;

-	GLint x1,n1;

-	LOCAL_VARS;

-

-	y = Y_FLIP(y);

-

-	if (DBG) fprintf(stderr, "ReadRGBASpan\n");

-

-	HW_READ_CLIPLOOP()

-	  {

-	     GLint i = 0;

-	     CLIPSPAN(x,y,n,x1,n1,i);

-

-	       {

-		  const void * src = GET_PTR( x1, y );

-		  _generic_read_RGBA_span_BGRA8888_REV_SSE2( src, rgba[i], n1 );

-	       }

-	  }

-	HW_ENDCLIPLOOP();

-     }

-   HW_READ_UNLOCK();

-}

-#endif

-

-#if defined(GET_PTR) &&	\

-   defined(USE_SSE_ASM) && \

-   (SPANTMP_PIXEL_FMT == GL_BGRA) && \

-     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)

-static void TAG2(ReadRGBASpan,_SSE)( struct gl_context *ctx,

-                                     struct gl_renderbuffer *rb,

-                                     GLuint n, GLint x, GLint y,

-                                     void *values)

-{

-#ifndef USE_INNER_EMMS

-   /* The EMMS instruction is directly in-lined here because using GCC's

-    * built-in _mm_empty function was found to utterly destroy performance.

-    */

-   __asm__ __volatile__( "emms" );

-#endif

-

-   (void) ctx;

-

-   HW_READ_LOCK()

-     {

-        GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;

-	GLint x1,n1;

-	LOCAL_VARS;

-

-	y = Y_FLIP(y);

-

-	if (DBG) fprintf(stderr, "ReadRGBASpan\n");

-

-	HW_READ_CLIPLOOP()

-	  {

-	     GLint i = 0;

-	     CLIPSPAN(x,y,n,x1,n1,i);

-

-	       {

-		  const void * src = GET_PTR( x1, y );

-		  _generic_read_RGBA_span_BGRA8888_REV_SSE( src, rgba[i], n1 );

-	       }

-	  }

-	HW_ENDCLIPLOOP();

-     }

-   HW_READ_UNLOCK();

-#ifndef USE_INNER_EMMS

-   __asm__ __volatile__( "emms" );

-#endif

-}

-#endif

-

-

-static void TAG(ReadRGBAPixels)( struct gl_context *ctx,

-                                 struct gl_renderbuffer *rb,

-				 GLuint n, const GLint x[], const GLint y[],

-				 void *values )

-{

-   (void) ctx;

-

-   HW_READ_LOCK()

-      {

-         GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;

-	 GLint i;

-	 LOCAL_VARS;

-

-	 if (DBG) fprintf(stderr, "ReadRGBAPixels\n");

-

-	 HW_READ_CLIPLOOP()

-	    {

-               for (i=0;i<n;i++) {

-                  int fy = Y_FLIP( y[i] );

-                     if (CLIPPIXEL( x[i], fy ))

-                        READ_RGBA( rgba[i], x[i], fy );

-               }

-	    }

-	 HW_ENDCLIPLOOP();

-      }

-   HW_READ_UNLOCK();

-}

-

-static void TAG(InitPointers)(struct gl_renderbuffer *rb)

-{

-   rb->PutRow = TAG(WriteRGBASpan);

-   rb->PutRowRGB = TAG(WriteRGBSpan);

-   rb->PutMonoRow = TAG(WriteMonoRGBASpan);

-   rb->PutValues = TAG(WriteRGBAPixels);

-   rb->PutMonoValues = TAG(WriteMonoRGBAPixels);

-   rb->GetValues = TAG(ReadRGBAPixels);

-

-#if defined(GET_PTR)

-#if defined(USE_SSE_ASM) && \

-   (SPANTMP_PIXEL_FMT == GL_BGRA) && \

-     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)

-   if ( cpu_has_xmm2 ) {

-      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "SSE2" );

-      rb->GetRow = TAG2(ReadRGBASpan, _SSE2);

-   }

-   else

-#endif

-#if defined(USE_SSE_ASM) && \

-   (SPANTMP_PIXEL_FMT == GL_BGRA) && \

-     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)

-   if ( cpu_has_xmm ) {

-      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "SSE" );

-      rb->GetRow = TAG2(ReadRGBASpan, _SSE);

-   }

-   else

-#endif

-#if defined(USE_MMX_ASM) && \

-   (((SPANTMP_PIXEL_FMT == GL_BGRA) && \

-	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)) || \

-    ((SPANTMP_PIXEL_FMT == GL_RGB) && \

-	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)))

-   if ( cpu_has_mmx ) {

-      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "MMX" );

-      rb->GetRow = TAG2(ReadRGBASpan, _MMX);

-   }

-   else

-#endif

-#endif /* GET_PTR */

-   {

-      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "C" );

-      rb->GetRow = TAG(ReadRGBASpan);

-   }

-

-}

-

-

-#undef INIT_MONO_PIXEL

-#undef WRITE_PIXEL

-#undef WRITE_RGBA

-#undef READ_RGBA

-#undef TAG

-#undef TAG2

-#undef GET_VALUE

-#undef PUT_VALUE

-#undef GET_PTR

-#undef SPANTMP_PIXEL_FMT

-#undef SPANTMP_PIXEL_TYPE

+/*
+ * Copyright 2000-2001 VA Linux Systems, Inc.
+ * (C) Copyright IBM Corporation 2004
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file spantmp2.h
+ *
+ * Template file of span read / write functions.
+ *
+ * \author Keith Whitwell <keithw@tungstengraphics.com>
+ * \author Gareth Hughes <gareth@nvidia.com>
+ * \author Ian Romanick <idr@us.ibm.com>
+ */
+
+#include "main/colormac.h"
+#include "spantmp_common.h"
+
+#ifndef DBG
+#define DBG 0
+#endif
+
+#ifndef HW_READ_CLIPLOOP
+#define HW_READ_CLIPLOOP()	HW_CLIPLOOP()
+#endif
+
+#ifndef HW_WRITE_CLIPLOOP
+#define HW_WRITE_CLIPLOOP()	HW_CLIPLOOP()
+#endif
+
+#if (SPANTMP_PIXEL_FMT == GL_RGB)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)
+
+/**
+ ** GL_RGB, GL_UNSIGNED_SHORT_5_6_5
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+#define INIT_MONO_PIXEL(p, color) \
+  p = PACK_COLOR_565( color[0], color[1], color[2] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   PUT_VALUE(_x, _y, ((((int)r & 0xf8) << 8) |				\
+		      (((int)g & 0xfc) << 3) |				\
+		      (((int)b & 0xf8) >> 3)))				\
+
+#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)
+
+#define READ_RGBA( rgba, _x, _y )					\
+   do {									\
+      GLushort p = GET_VALUE(_x, _y);					\
+      rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8;				\
+      rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc;				\
+      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\
+      rgba[3] = 0xff;							\
+   } while (0)
+
+#elif (SPANTMP_PIXEL_FMT == GL_RGB)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5_REV)
+
+/**
+ ** GL_RGB, GL_UNSIGNED_SHORT_5_6_5_REV
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+#define INIT_MONO_PIXEL(p, color) \
+  p = PACK_COLOR_565_REV( color[0], color[1], color[2] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   PUT_VALUE(_x, _y, PACK_COLOR_565_REV( r, g, b ))
+
+#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)
+
+#define READ_RGBA( rgba, _x, _y )					\
+   do {									\
+      GLushort p = GET_VALUE(_x, _y);					\
+      p = p << 8 | p >> 8;						\
+      rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8;				\
+      rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc;				\
+      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\
+      rgba[3] = 0xff;							\
+   } while (0)
+
+#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_4_4_4_4)
+
+/**
+ ** GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+#define INIT_MONO_PIXEL(p, color) \
+   p = PACK_COLOR_4444_REV(color[3], color[0], color[1], color[2])
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   PUT_VALUE(_x, _y, PACK_COLOR_4444_REV(a, r, g, b))			\
+
+#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)
+
+#define READ_RGBA( rgba, _x, _y )					\
+   do {									\
+      GLushort p = GET_VALUE(_x, _y);					\
+      rgba[0] = ((p >> 0) & 0xf) * 0x11;				\
+      rgba[1] = ((p >> 12) & 0xf) * 0x11;				\
+      rgba[2] = ((p >> 4) & 0xf) * 0x11;				\
+      rgba[3] = ((p >> 8) & 0xf) * 0x11;				\
+   } while (0)
+
+
+#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_4_4_4_4_REV)
+
+/**
+ ** GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4_REV
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+#define INIT_MONO_PIXEL(p, color) \
+   p = PACK_COLOR_4444(color[3], color[0], color[1], color[2])
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   PUT_VALUE(_x, _y, PACK_COLOR_4444(a, r, g, b))			\
+
+#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)
+
+#define READ_RGBA( rgba, _x, _y )					\
+   do {									\
+      GLushort p = GET_VALUE(_x, _y);					\
+      rgba[0] = ((p >> 8) & 0xf) * 0x11;				\
+      rgba[1] = ((p >> 4) & 0xf) * 0x11;				\
+      rgba[2] = ((p >> 0) & 0xf) * 0x11;				\
+      rgba[3] = ((p >> 12) & 0xf) * 0x11;				\
+   } while (0)
+
+
+#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_1_5_5_5_REV)
+
+/**
+ ** GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+#define INIT_MONO_PIXEL(p, color) \
+   p = PACK_COLOR_1555(color[3], color[0], color[1], color[2])
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   PUT_VALUE(_x, _y, PACK_COLOR_1555(a, r, g, b))			\
+
+#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)
+
+#define READ_RGBA( rgba, _x, _y )					\
+   do {									\
+      GLushort p = GET_VALUE(_x, _y);					\
+      rgba[0] = ((p >> 7) & 0xf8) * 255 / 0xf8;				\
+      rgba[1] = ((p >> 2) & 0xf8) * 255 / 0xf8;				\
+      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\
+      rgba[3] = ((p >> 15) & 0x1) * 0xff;				\
+   } while (0)
+
+#elif (SPANTMP_PIXEL_FMT == GL_BGRA)  && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_1_5_5_5)
+
+/**
+ ** GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLushort *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLushort *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+#define INIT_MONO_PIXEL(p, color) \
+   p = PACK_COLOR_1555_REV(color[3], color[0], color[1], color[2])
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   PUT_VALUE(_x, _y, PACK_COLOR_1555_REV(a, r, g, b))			\
+
+#define WRITE_PIXEL( _x, _y, p ) PUT_VALUE(_x, _y, p)
+
+#define READ_RGBA( rgba, _x, _y )					\
+   do {									\
+      GLushort p = GET_VALUE(_x, _y);					\
+      p = p << 8 | p >> 8;						\
+      rgba[0] = ((p >> 7) & 0xf8) * 255 / 0xf8;				\
+      rgba[1] = ((p >> 2) & 0xf8) * 255 / 0xf8;				\
+      rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\
+      rgba[3] = ((p >> 15) & 0x1) * 0xff;				\
+   } while (0)
+
+#elif (SPANTMP_PIXEL_FMT == GL_BGRA) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)
+
+/**
+ ** GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (     buf + (_x) * 4 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLuint *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLuint *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+# define INIT_MONO_PIXEL(p, color)                       \
+     p = PACK_COLOR_8888(color[3], color[0], color[1], color[2]) 
+
+# define WRITE_RGBA(_x, _y, r, g, b, a)                                 \
+   PUT_VALUE(_x, _y, ((r << 16) |					\
+		      (g << 8) |					\
+		      (b << 0) |					\
+		      (a << 24)))
+
+#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)
+
+# if defined( USE_X86_ASM )
+#  define READ_RGBA(rgba, _x, _y)                                       \
+    do {                                                                \
+       GLuint p = GET_VALUE(_x, _y);					\
+       __asm__ __volatile__( "bswap	%0; rorl $8, %0"                \
+				: "=r" (p) : "0" (p) );                 \
+       ((GLuint *)rgba)[0] = p;                                         \
+    } while (0)
+# elif defined( MESA_BIG_ENDIAN )
+    /* On PowerPC with GCC 3.4.2 the shift madness below becomes a single
+     * rotlwi instruction.  It also produces good code on SPARC.
+     */
+#  define READ_RGBA( rgba, _x, _y )				        \
+     do {								\
+        GLuint p = GET_VALUE(_x, _y);					\
+        GLuint t = p;                                                   \
+        *((uint32_t *) rgba) = (t >> 24) | (p << 8);                    \
+     } while (0)
+# else
+#  define READ_RGBA( rgba, _x, _y )				        \
+     do {								\
+        GLuint p = GET_VALUE(_x, _y);					\
+	rgba[0] = (p >> 16) & 0xff;					\
+	rgba[1] = (p >>  8) & 0xff;					\
+	rgba[2] = (p >>  0) & 0xff;					\
+	rgba[3] = (p >> 24) & 0xff;					\
+     } while (0)
+# endif
+
+#elif (SPANTMP_PIXEL_FMT == GL_BGRA) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8)
+
+/**
+ ** GL_BGRA, GL_UNSIGNED_INT_8_8_8_8
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (     buf + (_x) * 4 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLuint *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLuint *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+# define INIT_MONO_PIXEL(p, color)                       \
+     p = PACK_COLOR_8888(color[2], color[1], color[0], color[3]) 
+
+# define WRITE_RGBA(_x, _y, r, g, b, a)                                 \
+   PUT_VALUE(_x, _y, ((r << 8) |					\
+		      (g << 16) |					\
+		      (b << 24) |					\
+		      (a << 0)))
+
+#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)
+
+# if defined( USE_X86_ASM )
+#  define READ_RGBA(rgba, _x, _y)                                       \
+    do {                                                                \
+       GLuint p = GET_VALUE(_x, _y);					\
+       __asm__ __volatile__( "rorl $8, %0"				\
+				: "=r" (p) : "0" (p) );                 \
+       ((GLuint *)rgba)[0] = p;                                         \
+    } while (0)
+# elif defined( MESA_BIG_ENDIAN )
+    /* On PowerPC with GCC 3.4.2 the shift madness below becomes a single
+     * rotlwi instruction.  It also produces good code on SPARC.
+     */
+#  define READ_RGBA( rgba, _x, _y )				        \
+     do {								\
+        GLuint p = CPU_TO_LE32(GET_VALUE(_x, _y));                      \
+        GLuint t = p;                                                   \
+        *((uint32_t *) rgba) = (t >> 24) | (p << 8);                    \
+     } while (0)
+# else
+#  define READ_RGBA( rgba, _x, _y )				        \
+     do {								\
+        GLuint p = GET_VALUE(_x, _y);					\
+	rgba[0] = (p >>  8) & 0xff;					\
+	rgba[1] = (p >> 16) & 0xff;					\
+	rgba[2] = (p >> 24) & 0xff;					\
+	rgba[3] = (p >>  0) & 0xff;					\
+     } while (0)
+# endif
+
+#elif (SPANTMP_PIXEL_FMT == GL_BGR) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)
+
+/**
+ ** GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV
+ **
+ ** This is really for MESA_FORMAT_XRGB8888.  The spantmp code needs to be
+ ** kicked to the curb, and we need to just code-gen this.
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (     buf + (_x) * 4 + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLuint *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLuint *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+# define INIT_MONO_PIXEL(p, color)                       \
+     p = PACK_COLOR_8888(0xff, color[0], color[1], color[2])
+
+# define WRITE_RGBA(_x, _y, r, g, b, a)					\
+   PUT_VALUE(_x, _y, ((r << 16) |					\
+		      (g << 8) |					\
+		      (b << 0) |					\
+		      (0xff << 24)))
+
+#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)
+
+# if defined( USE_X86_ASM )
+#  define READ_RGBA(rgba, _x, _y)                                       \
+    do {                                                                \
+       GLuint p = GET_VALUE(_x, _y);					\
+       __asm__ __volatile__( "bswap	%0; rorl $8, %0"                \
+				: "=r" (p) : "0" (p) );                 \
+       ((GLuint *)rgba)[0] = p | 0xff000000;				\
+    } while (0)
+# elif defined( MESA_BIG_ENDIAN )
+    /* On PowerPC with GCC 3.4.2 the shift madness below becomes a single
+     * rotlwi instruction.  It also produces good code on SPARC.
+     */
+#  define READ_RGBA( rgba, _x, _y )				        \
+     do {								\
+        GLuint p = GET_VALUE(_x, _y);					\
+        *((uint32_t *) rgba) = (p << 8) | 0xff;				\
+     } while (0)
+# else
+#  define READ_RGBA( rgba, _x, _y )				        \
+     do {								\
+        GLuint p = GET_VALUE(_x, _y);					\
+	rgba[0] = (p >> 16) & 0xff;					\
+	rgba[1] = (p >>  8) & 0xff;					\
+	rgba[2] = (p >>  0) & 0xff;					\
+	rgba[3] = 0xff;							\
+     } while (0)
+# endif
+
+#elif (SPANTMP_PIXEL_FMT == GL_ALPHA) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_BYTE)
+
+/**
+ ** GL_ALPHA, GL_UNSIGNED_BYTE
+ **/
+
+#ifndef GET_VALUE
+#ifndef GET_PTR
+#define GET_PTR(_x, _y) (     buf + (_x) + (_y) * pitch)
+#endif
+
+#define GET_VALUE(_x, _y) *(volatile GLubyte *)(GET_PTR(_x, _y))
+#define PUT_VALUE(_x, _y, _v) *(volatile GLubyte *)(GET_PTR(_x, _y)) = (_v)
+#endif /* GET_VALUE */
+
+# define INIT_MONO_PIXEL(p, color)                       \
+     p = color[3]
+
+# define WRITE_RGBA(_x, _y, r, g, b, a)                                 \
+   PUT_VALUE(_x, _y, a | (r & 0 /* quiet warnings */))
+
+#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p)
+
+#define READ_RGBA( rgba, _x, _y )				        \
+     do {								\
+        GLubyte p = GET_VALUE(_x, _y);					\
+	rgba[0] = 0;							\
+	rgba[1] = 0;							\
+	rgba[2] = 0;							\
+	rgba[3] = p;							\
+     } while (0)
+
+#else
+#error SPANTMP_PIXEL_FMT must be set to a valid value!
+#endif
+
+
+
+/**
+ ** Assembly routines.
+ **/
+
+#if defined( USE_MMX_ASM ) || defined( USE_SSE_ASM )
+#include "x86/read_rgba_span_x86.h"
+#include "x86/common_x86_asm.h"
+#endif
+
+static void TAG(WriteRGBASpan)( struct gl_context *ctx,
+                                struct gl_renderbuffer *rb,
+				GLuint n, GLint x, GLint y,
+				const void *values, const GLubyte mask[] )
+{
+   (void) ctx;
+
+   HW_WRITE_LOCK()
+      {
+         const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
+	 GLint x1;
+	 GLint n1;
+	 LOCAL_VARS;
+
+	 y = Y_FLIP(y);
+
+	 HW_WRITE_CLIPLOOP()
+	    {
+	       GLint i = 0;
+	       CLIPSPAN(x,y,n,x1,n1,i);
+
+	       if (DBG) fprintf(stderr, "WriteRGBASpan %d..%d (x1 %d)\n",
+				(int)i, (int)n1, (int)x1);
+
+	       if (mask)
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     if (mask[i])
+			WRITE_RGBA( x1, y,
+				    rgba[i][0], rgba[i][1],
+				    rgba[i][2], rgba[i][3] );
+	       }
+	       else
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     WRITE_RGBA( x1, y,
+				 rgba[i][0], rgba[i][1],
+				 rgba[i][2], rgba[i][3] );
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+      }
+   HW_WRITE_UNLOCK();
+}
+
+static void TAG(WriteRGBSpan)( struct gl_context *ctx,
+                               struct gl_renderbuffer *rb,
+			       GLuint n, GLint x, GLint y,
+			       const void *values, const GLubyte mask[] )
+{
+   (void) ctx;
+
+   HW_WRITE_LOCK()
+      {
+         const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
+	 GLint x1;
+	 GLint n1;
+	 LOCAL_VARS;
+
+	 y = Y_FLIP(y);
+
+	 HW_WRITE_CLIPLOOP()
+	    {
+	       GLint i = 0;
+	       CLIPSPAN(x,y,n,x1,n1,i);
+
+	       if (DBG) fprintf(stderr, "WriteRGBSpan %d..%d (x1 %d)\n",
+				(int)i, (int)n1, (int)x1);
+
+	       if (mask)
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     if (mask[i])
+			WRITE_RGBA( x1, y, rgb[i][0], rgb[i][1], rgb[i][2], 255 );
+	       }
+	       else
+	       {
+		  for (;n1>0;i++,x1++,n1--)
+		     WRITE_RGBA( x1, y, rgb[i][0], rgb[i][1], rgb[i][2], 255 );
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+      }
+   HW_WRITE_UNLOCK();
+}
+
+static void TAG(WriteRGBAPixels)( struct gl_context *ctx,
+                                  struct gl_renderbuffer *rb,
+                                  GLuint n, const GLint x[], const GLint y[],
+                                  const void *values, const GLubyte mask[] )
+{
+   (void) ctx;
+
+   HW_WRITE_LOCK()
+      {
+         const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
+	 GLint i;
+	 LOCAL_VARS;
+
+	 if (DBG) fprintf(stderr, "WriteRGBAPixels\n");
+
+	 HW_WRITE_CLIPLOOP()
+	    {
+	       if (mask)
+	       {
+	          for (i=0;i<n;i++)
+	          {
+		     if (mask[i]) {
+		        const int fy = Y_FLIP(y[i]);
+		        if (CLIPPIXEL(x[i],fy))
+			   WRITE_RGBA( x[i], fy,
+				       rgba[i][0], rgba[i][1],
+				       rgba[i][2], rgba[i][3] );
+		     }
+	          }
+	       }
+	       else
+	       {
+	          for (i=0;i<n;i++)
+	          {
+		     const int fy = Y_FLIP(y[i]);
+		     if (CLIPPIXEL(x[i],fy))
+			WRITE_RGBA( x[i], fy,
+				    rgba[i][0], rgba[i][1],
+				    rgba[i][2], rgba[i][3] );
+	          }
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+      }
+   HW_WRITE_UNLOCK();
+}
+
+
+static void TAG(WriteMonoRGBASpan)( struct gl_context *ctx,	
+                                    struct gl_renderbuffer *rb,
+				    GLuint n, GLint x, GLint y, 
+				    const void *value, const GLubyte mask[] )
+{
+   (void) ctx;
+
+   HW_WRITE_LOCK()
+      {
+         const GLubyte *color = (const GLubyte *) value;
+	 GLint x1;
+	 GLint n1;
+	 LOCAL_VARS;
+	 INIT_MONO_PIXEL(p, color);
+
+	 y = Y_FLIP( y );
+
+	 if (DBG) fprintf(stderr, "WriteMonoRGBASpan\n");
+
+	 HW_WRITE_CLIPLOOP()
+	    {
+	       GLint i = 0;
+	       CLIPSPAN(x,y,n,x1,n1,i);
+	       if (mask)
+	       {
+	          for (;n1>0;i++,x1++,n1--)
+		     if (mask[i])
+		        WRITE_PIXEL( x1, y, p );
+	       }
+	       else
+	       {
+	          for (;n1>0;i++,x1++,n1--)
+		     WRITE_PIXEL( x1, y, p );
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+      }
+   HW_WRITE_UNLOCK();
+}
+
+
+static void TAG(WriteMonoRGBAPixels)( struct gl_context *ctx,
+                                      struct gl_renderbuffer *rb,
+				      GLuint n,
+				      const GLint x[], const GLint y[],
+				      const void *value,
+				      const GLubyte mask[] ) 
+{
+   (void) ctx;
+
+   HW_WRITE_LOCK()
+      {
+         const GLubyte *color = (const GLubyte *) value;
+	 GLint i;
+	 LOCAL_VARS;
+	 INIT_MONO_PIXEL(p, color);
+
+	 if (DBG) fprintf(stderr, "WriteMonoRGBAPixels\n");
+
+	 HW_WRITE_CLIPLOOP()
+	    {
+	       if (mask)
+	       {
+		  for (i=0;i<n;i++)
+		     if (mask[i]) {
+			int fy = Y_FLIP(y[i]);
+			if (CLIPPIXEL( x[i], fy ))
+			   WRITE_PIXEL( x[i], fy, p );
+		     }
+	       }
+	       else
+	       {
+		  for (i=0;i<n;i++) {
+		     int fy = Y_FLIP(y[i]);
+		     if (CLIPPIXEL( x[i], fy ))
+			WRITE_PIXEL( x[i], fy, p );
+		  }
+	       }
+	    }
+	 HW_ENDCLIPLOOP();
+      }
+   HW_WRITE_UNLOCK();
+}
+
+
+static void TAG(ReadRGBASpan)( struct gl_context *ctx,
+                               struct gl_renderbuffer *rb,
+			       GLuint n, GLint x, GLint y, void *values)
+{
+   (void) ctx;
+
+   HW_READ_LOCK()
+      {
+         GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;
+	 GLint x1,n1;
+	 LOCAL_VARS;
+
+	 y = Y_FLIP(y);
+
+	 if (DBG) fprintf(stderr, "ReadRGBASpan\n");
+
+	 HW_READ_CLIPLOOP()
+	    {
+	       GLint i = 0;
+	       CLIPSPAN(x,y,n,x1,n1,i);
+	       for (;n1>0;i++,x1++,n1--)
+		  READ_RGBA( rgba[i], x1, y );
+	    }
+         HW_ENDCLIPLOOP();
+      }
+   HW_READ_UNLOCK();
+}
+
+
+#if defined(GET_PTR) && \
+   defined(USE_MMX_ASM) && \
+   (((SPANTMP_PIXEL_FMT == GL_BGRA) && \
+	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)) || \
+    ((SPANTMP_PIXEL_FMT == GL_RGB) && \
+	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)))
+static void TAG2(ReadRGBASpan,_MMX)( struct gl_context *ctx,
+                                     struct gl_renderbuffer *rb,
+                                     GLuint n, GLint x, GLint y, void *values)
+{
+#ifndef USE_INNER_EMMS
+   /* The EMMS instruction is directly in-lined here because using GCC's
+    * built-in _mm_empty function was found to utterly destroy performance.
+    */
+   __asm__ __volatile__( "emms" );
+#endif
+
+   (void) ctx;
+
+   HW_READ_LOCK()
+     {
+        GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;
+	GLint x1,n1;
+	LOCAL_VARS;
+
+	y = Y_FLIP(y);
+
+	if (DBG) fprintf(stderr, "ReadRGBASpan\n");
+
+	HW_READ_CLIPLOOP()
+	  {
+	     GLint i = 0;
+	     CLIPSPAN(x,y,n,x1,n1,i);
+
+	       {
+		  const void * src = GET_PTR( x1, y );
+#if (SPANTMP_PIXEL_FMT == GL_RGB) && \
+		  (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)
+		  _generic_read_RGBA_span_RGB565_MMX( src, rgba[i], n1 );
+#else
+		  _generic_read_RGBA_span_BGRA8888_REV_MMX( src, rgba[i], n1 );
+#endif
+	       }
+	  }
+	HW_ENDCLIPLOOP();
+     }
+   HW_READ_UNLOCK();
+#ifndef USE_INNER_EMMS
+   __asm__ __volatile__( "emms" );
+#endif
+}
+#endif
+
+
+#if defined(GET_PTR) &&	\
+   defined(USE_SSE_ASM) && \
+   (SPANTMP_PIXEL_FMT == GL_BGRA) && \
+     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)
+static void TAG2(ReadRGBASpan,_SSE2)( struct gl_context *ctx,
+                                      struct gl_renderbuffer *rb,
+                                      GLuint n, GLint x, GLint y,
+                                      void *values)
+{
+   (void) ctx;
+
+   HW_READ_LOCK()
+     {
+        GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;
+	GLint x1,n1;
+	LOCAL_VARS;
+
+	y = Y_FLIP(y);
+
+	if (DBG) fprintf(stderr, "ReadRGBASpan\n");
+
+	HW_READ_CLIPLOOP()
+	  {
+	     GLint i = 0;
+	     CLIPSPAN(x,y,n,x1,n1,i);
+
+	       {
+		  const void * src = GET_PTR( x1, y );
+		  _generic_read_RGBA_span_BGRA8888_REV_SSE2( src, rgba[i], n1 );
+	       }
+	  }
+	HW_ENDCLIPLOOP();
+     }
+   HW_READ_UNLOCK();
+}
+#endif
+
+#if defined(GET_PTR) &&	\
+   defined(USE_SSE_ASM) && \
+   (SPANTMP_PIXEL_FMT == GL_BGRA) && \
+     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)
+static void TAG2(ReadRGBASpan,_SSE)( struct gl_context *ctx,
+                                     struct gl_renderbuffer *rb,
+                                     GLuint n, GLint x, GLint y,
+                                     void *values)
+{
+#ifndef USE_INNER_EMMS
+   /* The EMMS instruction is directly in-lined here because using GCC's
+    * built-in _mm_empty function was found to utterly destroy performance.
+    */
+   __asm__ __volatile__( "emms" );
+#endif
+
+   (void) ctx;
+
+   HW_READ_LOCK()
+     {
+        GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;
+	GLint x1,n1;
+	LOCAL_VARS;
+
+	y = Y_FLIP(y);
+
+	if (DBG) fprintf(stderr, "ReadRGBASpan\n");
+
+	HW_READ_CLIPLOOP()
+	  {
+	     GLint i = 0;
+	     CLIPSPAN(x,y,n,x1,n1,i);
+
+	       {
+		  const void * src = GET_PTR( x1, y );
+		  _generic_read_RGBA_span_BGRA8888_REV_SSE( src, rgba[i], n1 );
+	       }
+	  }
+	HW_ENDCLIPLOOP();
+     }
+   HW_READ_UNLOCK();
+#ifndef USE_INNER_EMMS
+   __asm__ __volatile__( "emms" );
+#endif
+}
+#endif
+
+
+static void TAG(ReadRGBAPixels)( struct gl_context *ctx,
+                                 struct gl_renderbuffer *rb,
+				 GLuint n, const GLint x[], const GLint y[],
+				 void *values )
+{
+   (void) ctx;
+
+   HW_READ_LOCK()
+      {
+         GLubyte (*rgba)[4] = (GLubyte (*)[4]) values;
+	 GLint i;
+	 LOCAL_VARS;
+
+	 if (DBG) fprintf(stderr, "ReadRGBAPixels\n");
+
+	 HW_READ_CLIPLOOP()
+	    {
+               for (i=0;i<n;i++) {
+                  int fy = Y_FLIP( y[i] );
+                     if (CLIPPIXEL( x[i], fy ))
+                        READ_RGBA( rgba[i], x[i], fy );
+               }
+	    }
+	 HW_ENDCLIPLOOP();
+      }
+   HW_READ_UNLOCK();
+}
+
+static void TAG(InitPointers)(struct gl_renderbuffer *rb)
+{
+   rb->PutRow = TAG(WriteRGBASpan);
+   rb->PutRowRGB = TAG(WriteRGBSpan);
+   rb->PutMonoRow = TAG(WriteMonoRGBASpan);
+   rb->PutValues = TAG(WriteRGBAPixels);
+   rb->PutMonoValues = TAG(WriteMonoRGBAPixels);
+   rb->GetValues = TAG(ReadRGBAPixels);
+
+#if defined(GET_PTR)
+#if defined(USE_SSE_ASM) && \
+   (SPANTMP_PIXEL_FMT == GL_BGRA) && \
+     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)
+   if ( cpu_has_xmm2 ) {
+      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "SSE2" );
+      rb->GetRow = TAG2(ReadRGBASpan, _SSE2);
+   }
+   else
+#endif
+#if defined(USE_SSE_ASM) && \
+   (SPANTMP_PIXEL_FMT == GL_BGRA) && \
+     (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)
+   if ( cpu_has_xmm ) {
+      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "SSE" );
+      rb->GetRow = TAG2(ReadRGBASpan, _SSE);
+   }
+   else
+#endif
+#if defined(USE_MMX_ASM) && \
+   (((SPANTMP_PIXEL_FMT == GL_BGRA) && \
+	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV)) || \
+    ((SPANTMP_PIXEL_FMT == GL_RGB) && \
+	(SPANTMP_PIXEL_TYPE == GL_UNSIGNED_SHORT_5_6_5)))
+   if ( cpu_has_mmx ) {
+      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "MMX" );
+      rb->GetRow = TAG2(ReadRGBASpan, _MMX);
+   }
+   else
+#endif
+#endif /* GET_PTR */
+   {
+      if (DBG) fprintf( stderr, "Using %s version of GetRow\n", "C" );
+      rb->GetRow = TAG(ReadRGBASpan);
+   }
+
+}
+
+
+#undef INIT_MONO_PIXEL
+#undef WRITE_PIXEL
+#undef WRITE_RGBA
+#undef READ_RGBA
+#undef TAG
+#undef TAG2
+#undef GET_VALUE
+#undef PUT_VALUE
+#undef GET_PTR
+#undef SPANTMP_PIXEL_FMT
+#undef SPANTMP_PIXEL_TYPE
diff --git a/mesalib/src/mesa/drivers/dri/common/texmem.c b/mesalib/src/mesa/drivers/dri/common/texmem.c
index 1ba66133f..798ef1ee8 100644
--- a/mesalib/src/mesa/drivers/dri/common/texmem.c
+++ b/mesalib/src/mesa/drivers/dri/common/texmem.c
@@ -1,1341 +1,1341 @@
-/*

- * Copyright 2000-2001 VA Linux Systems, Inc.

- * (C) Copyright IBM Corporation 2002, 2003

- * All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * on the rights to use, copy, modify, merge, publish, distribute, sub

- * license, and/or sell copies of the Software, and to permit persons to whom

- * the Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice (including the next

- * paragraph) shall be included in all copies or substantial portions of the

- * Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL

- * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,

- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

- * USE OR OTHER DEALINGS IN THE SOFTWARE.

- *

- * Authors:

- *    Ian Romanick <idr@us.ibm.com>

- *    Keith Whitwell <keithw@tungstengraphics.com>

- *    Kevin E. Martin <kem@users.sourceforge.net>

- *    Gareth Hughes <gareth@nvidia.com>

- */

-

-/** \file texmem.c

- * Implements all of the device-independent texture memory management.

- * 

- * Currently, only a simple LRU texture memory management policy is

- * implemented.  In the (hopefully very near) future, better policies will be

- * implemented.  The idea is that the DRI should be able to run in one of two

- * modes.  In the default mode the DRI will dynamically attempt to discover

- * the best texture management policy for the running application.  In the

- * other mode, the user (via some sort of as yet TBD mechanism) will select

- * a texture management policy that is known to work well with the

- * application.

- */

-

-#include "main/imports.h"

-#include "main/macros.h"

-#include "main/simple_list.h"

-#include "texmem.h"

-

-

-static unsigned dummy_swap_counter;

-

-

-/**

- * Calculate \f$\log_2\f$ of a value.  This is a particularly poor

- * implementation of this function.  However, since system performance is in

- * no way dependent on this function, the slowness of the implementation is

- * irrelevent.

- * 

- * \param n Value whose \f$\log_2\f$ is to be calculated

- */

-

-static GLuint

-driLog2( GLuint n )

-{

-   GLuint log2;

-

-   for ( log2 = 1 ; n > 1 ; log2++ ) {

-      n >>= 1;

-   }

-

-   return log2;

-}

-

-

-

-

-/**

- * Determine if a texture is resident in textureable memory.  Depending on

- * the driver, this may or may not be on-card memory.  It could be AGP memory

- * or anyother type of memory from which the hardware can directly read

- * texels.

- * 

- * This function is intended to be used as the \c IsTextureResident function

- * in the device's \c dd_function_table.

- * 

- * \param ctx GL context pointer (currently unused)

- * \param texObj Texture object to be tested

- */

-

-GLboolean

-driIsTextureResident( struct gl_context * ctx, 

-		      struct gl_texture_object * texObj )

-{

-   driTextureObject * t;

-

-

-   t = (driTextureObject *) texObj->DriverData;

-   return( (t != NULL) && (t->memBlock != NULL) );

-}

-

-

-

-

-/**

- * (Re)initialize the global circular LRU list.  The last element

- * in the array (\a heap->nrRegions) is the sentinal.  Keeping it

- * at the end of the array allows the other elements of the array

- * to be addressed rationally when looking up objects at a particular

- * location in texture memory.

- * 

- * \param heap Texture heap to be reset

- */

-

-static void resetGlobalLRU( driTexHeap * heap )

-{

-   drmTextureRegionPtr list = heap->global_regions;

-   unsigned       sz = 1U << heap->logGranularity;

-   unsigned       i;

-

-   for (i = 0 ; (i+1) * sz <= heap->size ; i++) {

-      list[i].prev = i-1;

-      list[i].next = i+1;

-      list[i].age = 0;

-   }

-

-   i--;

-   list[0].prev = heap->nrRegions;

-   list[i].prev = i-1;

-   list[i].next = heap->nrRegions;

-   list[heap->nrRegions].prev = i;

-   list[heap->nrRegions].next = 0;

-   heap->global_age[0] = 0;

-}

-

-/**

- * Print out debugging information about the local texture LRU.

- *

- * \param heap Texture heap to be printed

- * \param callername Name of calling function

- */

-static void printLocalLRU( driTexHeap * heap, const char *callername  )

-{

-   driTextureObject *t;

-   unsigned sz = 1U << heap->logGranularity;

-

-   fprintf( stderr, "%s in %s:\nLocal LRU, heap %d:\n", 

-	    __FUNCTION__, callername, heap->heapId );

-

-   foreach ( t, &heap->texture_objects ) {

-      if (!t->memBlock)

-	 continue;

-      if (!t->tObj) {

-	 fprintf( stderr, "Placeholder (%p) %d at 0x%x sz 0x%x\n",

-		  (void *)t,

-		  t->memBlock->ofs / sz,

-		  t->memBlock->ofs,

-		  t->memBlock->size );

-      } else {

-	 fprintf( stderr, "Texture (%p) at 0x%x sz 0x%x\n",

-		  (void *)t,

-		  t->memBlock->ofs,

-		  t->memBlock->size );

-      }

-   }

-   foreach ( t, heap->swapped_objects ) {

-      if (!t->tObj) {

-	 fprintf( stderr, "Swapped Placeholder (%p)\n", (void *)t );

-      } else {

-	 fprintf( stderr, "Swapped Texture (%p)\n", (void *)t );

-      }

-   }

-

-   fprintf( stderr, "\n" );

-}

-

-/**

- * Print out debugging information about the global texture LRU.

- *

- * \param heap Texture heap to be printed

- * \param callername Name of calling function

- */

-static void printGlobalLRU( driTexHeap * heap, const char *callername )

-{

-   drmTextureRegionPtr list = heap->global_regions;

-   unsigned int i, j;

-

-   fprintf( stderr, "%s in %s:\nGlobal LRU, heap %d list %p:\n", 

-	    __FUNCTION__, callername, heap->heapId, (void *)list );

-

-   for ( i = 0, j = heap->nrRegions ; i < heap->nrRegions ; i++ ) {

-      fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",

-	       j, list[j].age, list[j].next, list[j].prev, list[j].in_use );

-      j = list[j].next;

-      if ( j == heap->nrRegions ) break;

-   }

-

-   if ( j != heap->nrRegions ) {

-      fprintf( stderr, "Loop detected in global LRU\n" );

-      for ( i = 0 ; i < heap->nrRegions ; i++ ) {

-	 fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",

-		  i, list[i].age, list[i].next, list[i].prev, list[i].in_use );

-      }

-   }

-

-   fprintf( stderr, "\n" );

-}

-

-

-/**

- * Called by the client whenever it touches a local texture.

- * 

- * \param t Texture object that the client has accessed

- */

-

-void driUpdateTextureLRU( driTextureObject * t )

-{

-   driTexHeap   * heap;

-   drmTextureRegionPtr list;

-   unsigned   shift;

-   unsigned   start;

-   unsigned   end;

-   unsigned   i;

-

-

-   heap = t->heap;

-   if ( heap != NULL ) {

-      shift = heap->logGranularity;

-      start = t->memBlock->ofs >> shift;

-      end = (t->memBlock->ofs + t->memBlock->size - 1) >> shift;

-

-

-      heap->local_age = ++heap->global_age[0];

-      list = heap->global_regions;

-

-

-      /* Update the context's local LRU 

-       */

-

-      move_to_head( & heap->texture_objects, t );

-

-

-      for (i = start ; i <= end ; i++) {

-	 list[i].age = heap->local_age;

-

-	 /* remove_from_list(i)

-	  */

-	 list[(unsigned)list[i].next].prev = list[i].prev;

-	 list[(unsigned)list[i].prev].next = list[i].next;

-

-	 /* insert_at_head(list, i)

-	  */

-	 list[i].prev = heap->nrRegions;

-	 list[i].next = list[heap->nrRegions].next;

-	 list[(unsigned)list[heap->nrRegions].next].prev = i;

-	 list[heap->nrRegions].next = i;

-      }

-

-      if ( 0 ) {

-	 printGlobalLRU( heap, __FUNCTION__ );

-	 printLocalLRU( heap, __FUNCTION__ );

-      }

-   }

-}

-

-

-

-

-/**

- * Keep track of swapped out texture objects.

- * 

- * \param t Texture object to be "swapped" out of its texture heap

- */

-

-void driSwapOutTextureObject( driTextureObject * t )

-{

-   unsigned   face;

-

-

-   if ( t->memBlock != NULL ) {

-      assert( t->heap != NULL );

-      mmFreeMem( t->memBlock );

-      t->memBlock = NULL;

-

-      if (t->timestamp > t->heap->timestamp)

-	 t->heap->timestamp = t->timestamp;

-

-      t->heap->texture_swaps[0]++;

-      move_to_tail( t->heap->swapped_objects, t );

-      t->heap = NULL;

-   }

-   else {

-      assert( t->heap == NULL );

-   }

-

-

-   for ( face = 0 ; face < 6 ; face++ ) {

-      t->dirty_images[face] = ~0;

-   }

-}

-

-

-

-

-/**

- * Destroy hardware state associated with texture \a t.  Calls the

- * \a destroy_texture_object method associated with the heap from which

- * \a t was allocated.

- * 

- * \param t Texture object to be destroyed

- */

-

-void driDestroyTextureObject( driTextureObject * t )

-{

-   driTexHeap * heap;

-

-

-   if ( 0 ) {

-      fprintf( stderr, "[%s:%d] freeing %p (tObj = %p, DriverData = %p)\n",

-	       __FILE__, __LINE__,

-	       (void *)t,

-	       (void *)((t != NULL) ? t->tObj : NULL),

-	       (void *)((t != NULL && t->tObj != NULL) ? t->tObj->DriverData : NULL ));

-   }

-

-   if ( t != NULL ) {

-      if ( t->memBlock ) {

-	 heap = t->heap;

-	 assert( heap != NULL );

-

-	 heap->texture_swaps[0]++;

-

-	 mmFreeMem( t->memBlock );

-	 t->memBlock = NULL;

-

-	 if (t->timestamp > t->heap->timestamp)

-	    t->heap->timestamp = t->timestamp;

-

-	 heap->destroy_texture_object( heap->driverContext, t );

-	 t->heap = NULL;

-      }

-

-      if ( t->tObj != NULL ) {

-	 assert( t->tObj->DriverData == t );

-	 t->tObj->DriverData = NULL;

-      }

-

-      remove_from_list( t );

-      FREE( t );

-   }

-

-   if ( 0 ) {

-      fprintf( stderr, "[%s:%d] done freeing %p\n", __FILE__, __LINE__, (void *)t );

-   }

-}

-

-

-

-

-/**

- * Update the local heap's representation of texture memory based on

- * data in the SAREA.  This is done each time it is detected that some other

- * direct rendering client has held the lock.  This pertains to both our local

- * textures and the textures belonging to other clients.  Keep track of other

- * client's textures by pushing a placeholder texture onto the LRU list --

- * these are denoted by \a tObj being \a NULL.

- * 

- * \param heap Heap whose state is to be updated

- * \param offset Byte offset in the heap that has been stolen

- * \param size Size, in bytes, of the stolen block

- * \param in_use Non-zero if the block is pinned/reserved by the kernel

- */

-

-static void driTexturesGone( driTexHeap * heap, int offset, int size, 

-			     int in_use )

-{

-   driTextureObject * t;

-   driTextureObject * tmp;

-

-

-   foreach_s ( t, tmp, & heap->texture_objects ) {

-      if ( (t->memBlock->ofs < (offset + size))

-	   && ((t->memBlock->ofs + t->memBlock->size) > offset) ) {

-	 /* It overlaps - kick it out.  If the texture object is just a

-	  * place holder, then destroy it all together.  Otherwise, mark

-	  * it as being swapped out.

-	  */

-

-	 if ( t->tObj != NULL ) {

-	    driSwapOutTextureObject( t );

-	 }

-	 else {

-	    driDestroyTextureObject( t );

-	 }

-      }

-   }

-

-

-   {

-      t = (driTextureObject *) CALLOC( heap->texture_object_size );

-      if ( t == NULL ) return;

-

-      t->memBlock = mmAllocMem( heap->memory_heap, size, 0, offset );

-      if ( t->memBlock == NULL ) {

-	 fprintf( stderr, "Couldn't alloc placeholder: heap %u sz %x ofs %x\n", heap->heapId,

-		  (int)size, (int)offset );

-	 mmDumpMemInfo( heap->memory_heap );

-	 FREE(t);

-	 return;

-      }

-      t->heap = heap;

-      if (in_use) 

-	 t->reserved = 1; 

-      insert_at_head( & heap->texture_objects, t );

-   }

-}

-

-

-

-

-/**

- * Called by the client on lock contention to determine whether textures have

- * been stolen.  If another client has modified a region in which we have

- * textures, then we need to figure out which of our textures have been

- * removed and update our global LRU.

- * 

- * \param heap Texture heap to be updated

- */

-

-void driAgeTextures( driTexHeap * heap )

-{

-   drmTextureRegionPtr list = heap->global_regions;

-   unsigned       sz = 1U << (heap->logGranularity);

-   unsigned       i, nr = 0;

-

-

-   /* Have to go right round from the back to ensure stuff ends up

-    * LRU in the local list...  Fix with a cursor pointer.

-    */

-

-   for (i = list[heap->nrRegions].prev ; 

-	i != heap->nrRegions && nr < heap->nrRegions ; 

-	i = list[i].prev, nr++) {

-      /* If switching texturing schemes, then the SAREA might not have been

-       * properly cleared, so we need to reset the global texture LRU.

-       */

-

-      if ( (i * sz) > heap->size ) {

-	 nr = heap->nrRegions;

-	 break;

-      }

-

-      if (list[i].age > heap->local_age) 

-	  driTexturesGone( heap, i * sz, sz, list[i].in_use); 

-   }

-

-   /* Loop or uninitialized heap detected.  Reset.

-    */

-

-   if (nr == heap->nrRegions) {

-      driTexturesGone( heap, 0, heap->size, 0);

-      resetGlobalLRU( heap );

-   }

-

-   if ( 0 ) {

-      printGlobalLRU( heap, __FUNCTION__ );

-      printLocalLRU( heap, __FUNCTION__ );

-   }

-

-   heap->local_age = heap->global_age[0];

-}

-

-

-

-

-#define INDEX_ARRAY_SIZE 6 /* I'm not aware of driver with more than 2 heaps */

-

-/**

- * Allocate memory from a texture heap to hold a texture object.  This

- * routine will attempt to allocate memory for the texture from the heaps

- * specified by \c heap_array in order.  That is, first it will try to

- * allocate from \c heap_array[0], then \c heap_array[1], and so on.

- *

- * \param heap_array Array of pointers to texture heaps to use

- * \param nr_heaps Number of heap pointer in \a heap_array

- * \param t Texture object for which space is needed

- * \return The ID of the heap from which memory was allocated, or -1 if

- *         memory could not be allocated.

- *

- * \bug The replacement policy implemented by this function is horrible.

- */

-

-

-int

-driAllocateTexture( driTexHeap * const * heap_array, unsigned nr_heaps,

-		    driTextureObject * t )

-{

-   driTexHeap       * heap;

-   driTextureObject * temp;

-   driTextureObject * cursor;

-   unsigned           id;

-

-

-   /* In case it already has texture space, initialize heap.  This also

-    * prevents GCC from issuing a warning that heap might be used

-    * uninitialized.

-    */

-

-   heap = t->heap;

-

-

-   /* Run through each of the existing heaps and try to allocate a buffer

-    * to hold the texture.

-    */

-

-   for ( id = 0 ; (t->memBlock == NULL) && (id < nr_heaps) ; id++ ) {

-      heap = heap_array[ id ];

-      if ( heap != NULL ) {

-	 t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 

-				   heap->alignmentShift, 0 );

-      }

-   }

-

-

-   /* Kick textures out until the requested texture fits.

-    */

-

-   if ( t->memBlock == NULL ) {

-      unsigned index[INDEX_ARRAY_SIZE];

-      unsigned nrGoodHeaps = 0;

-

-      /* Trying to avoid dynamic memory allocation. If you have more

-       * heaps, increase INDEX_ARRAY_SIZE. I'm not aware of any

-       * drivers with more than 2 tex heaps. */

-      assert( nr_heaps < INDEX_ARRAY_SIZE );

-

-      /* Sort large enough heaps by duty. Insertion sort should be

-       * fast enough for such a short array. */

-      for ( id = 0 ; id < nr_heaps ; id++ ) {

-	 heap = heap_array[ id ];

-

-	 if ( heap != NULL && t->totalSize <= heap->size ) {

-	    unsigned j;

-

-	    for ( j = 0 ; j < nrGoodHeaps; j++ ) {

-	       if ( heap->duty > heap_array[ index[ j ] ]->duty )

-		  break;

-	    }

-

-	    if ( j < nrGoodHeaps ) {

-	       memmove( &index[ j+1 ], &index[ j ],

-			sizeof(index[ 0 ]) * (nrGoodHeaps - j) );

-	    }

-

-	    index[ j ] = id;

-

-	    nrGoodHeaps++;

-	 }

-      }

-

-      for ( id = 0 ; (t->memBlock == NULL) && (id < nrGoodHeaps) ; id++ ) {

-	 heap = heap_array[ index[ id ] ];

-

-	 for ( cursor = heap->texture_objects.prev, temp = cursor->prev;

-	       cursor != &heap->texture_objects ; 

-	       cursor = temp, temp = cursor->prev ) {

-	       

-	    /* The the LRU element.  If the texture is bound to one of

-	     * the texture units, then we cannot kick it out.

-	     */

-	    if ( cursor->bound || cursor->reserved ) {

-	       continue;

-	    }

-

-	    if ( cursor->memBlock )

-	       heap->duty -= cursor->memBlock->size;

-

-	    /* If this is a placeholder, there's no need to keep it */

-	    if (cursor->tObj)

-	       driSwapOutTextureObject( cursor );

-	    else

-	       driDestroyTextureObject( cursor );

-

-	    t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 

-				      heap->alignmentShift, 0 );

-

-	    if (t->memBlock)

-	       break;

-	 }

-      }

-

-      /* Rebalance duties. If a heap kicked more data than its duty,

-       * then all other heaps get that amount multiplied with their

-       * relative weight added to their duty. The negative duty is

-       * reset to 0. In the end all heaps have a duty >= 0.

-       *

-       * CAUTION: we must not change the heap pointer here, because it

-       * is used below to update the texture object.

-       */

-      for ( id = 0 ; id < nr_heaps ; id++ )

-	 if ( heap_array[ id ] != NULL && heap_array[ id ]->duty < 0) {

-	    int duty = -heap_array[ id ]->duty;

-	    double weight = heap_array[ id ]->weight;

-	    unsigned j;

-

-	    for ( j = 0 ; j < nr_heaps ; j++ )

-	       if ( j != id && heap_array[ j ] != NULL ) {

-		  heap_array[ j ]->duty += (double) duty *

-		     heap_array[ j ]->weight / weight;

-	       }

-

-	    heap_array[ id ]->duty = 0;

-	 }

-   }

-

-

-   if ( t->memBlock != NULL ) {

-      /* id and heap->heapId may or may not be the same value here.

-       */

-

-      assert( heap != NULL );

-      assert( (t->heap == NULL) || (t->heap == heap) );

-

-      t->heap = heap;

-      return heap->heapId;

-   }

-   else {

-      assert( t->heap == NULL );

-

-      fprintf( stderr, "[%s:%d] unable to allocate texture\n",

-	       __FUNCTION__, __LINE__ );

-      return -1;

-   }

-}

-

-

-

-

-

-

-/**

- * Set the location where the texture-swap counter is stored.

- */

-

-void

-driSetTextureSwapCounterLocation( driTexHeap * heap, unsigned * counter )

-{

-   heap->texture_swaps = (counter == NULL) ? & dummy_swap_counter : counter;

-}

-

-

-

-

-/**

- * Create a new heap for texture data.

- * 

- * \param heap_id             Device-dependent heap identifier.  This value

- *                            will returned by driAllocateTexture when memory

- *                            is allocated from this heap.

- * \param context             Device-dependent driver context.  This is

- *                            supplied as the first parameter to the

- *                            \c destroy_tex_obj function.

- * \param size                Size, in bytes, of the texture region

- * \param alignmentShift      Alignment requirement for textures.  If textures 

- *                            must be allocated on a 4096 byte boundry, this

- *                            would be 12.

- * \param nr_regions          Number of regions into which this texture space

- *                            should be partitioned

- * \param global_regions      Array of \c drmTextureRegion structures in the SAREA

- * \param global_age          Pointer to the global texture age in the SAREA

- * \param swapped_objects     Pointer to the list of texture objects that are

- *                            not in texture memory (i.e., have been swapped

- *                            out).

- * \param texture_object_size Size, in bytes, of a device-dependent texture

- *                            object

- * \param destroy_tex_obj     Function used to destroy a device-dependent

- *                            texture object

- *

- * \sa driDestroyTextureHeap

- */

-

-driTexHeap *

-driCreateTextureHeap( unsigned heap_id, void * context, unsigned size,

-		      unsigned alignmentShift, unsigned nr_regions,

-		      drmTextureRegionPtr global_regions, unsigned * global_age,

-		      driTextureObject * swapped_objects, 

-		      unsigned texture_object_size,

-		      destroy_texture_object_t * destroy_tex_obj

-		    )

-{

-   driTexHeap * heap;

-   unsigned     l;

-    

-    

-   if ( 0 )

-       fprintf( stderr, "%s( %u, %p, %u, %u, %u )\n",

-		__FUNCTION__,

-		heap_id, (void *)context, size, alignmentShift, nr_regions );

-

-   heap = (driTexHeap *) CALLOC( sizeof( driTexHeap ) );

-   if ( heap != NULL ) {

-      l = driLog2( (size - 1) / nr_regions );

-      if ( l < alignmentShift )

-      {

-	 l = alignmentShift;

-      }

-

-      heap->logGranularity = l;

-      heap->size = size & ~((1L << l) - 1);

-

-      heap->memory_heap = mmInit( 0, heap->size );

-      if ( heap->memory_heap != NULL ) {

-	 heap->heapId = heap_id;

-	 heap->driverContext = context;

-

-	 heap->alignmentShift = alignmentShift;

-	 heap->nrRegions = nr_regions;

-	 heap->global_regions = global_regions;

-	 heap->global_age = global_age;

-	 heap->swapped_objects = swapped_objects;

-	 heap->texture_object_size = texture_object_size;

-	 heap->destroy_texture_object = destroy_tex_obj;

-

-	 /* Force global heap init */

-	 if (heap->global_age[0] == 0)

-	     heap->local_age = ~0;

-	 else

-	     heap->local_age = 0;

-

-	 make_empty_list( & heap->texture_objects );

-	 driSetTextureSwapCounterLocation( heap, NULL );

-

-	 heap->weight = heap->size;

-	 heap->duty = 0;

-      }

-      else {

-	 FREE( heap );

-	 heap = NULL;

-      }

-   }

-

-

-   if ( 0 )

-       fprintf( stderr, "%s returning %p\n", __FUNCTION__, (void *)heap );

-

-   return heap;

-}

-

-

-

-

-/** Destroys a texture heap

- * 

- * \param heap Texture heap to be destroyed

- */

-

-void

-driDestroyTextureHeap( driTexHeap * heap )

-{

-   driTextureObject * t;

-   driTextureObject * temp;

-

-

-   if ( heap != NULL ) {

-      foreach_s( t, temp, & heap->texture_objects ) {

-	 driDestroyTextureObject( t );

-      }

-      foreach_s( t, temp, heap->swapped_objects ) {

-	 driDestroyTextureObject( t );

-      }

-

-      mmDestroy( heap->memory_heap );

-      FREE( heap );

-   }

-}

-

-

-

-

-/****************************************************************************/

-/**

- * Determine how many texels (including all mipmap levels) would be required

- * for a texture map of size \f$2^^\c base_size_log2\f$ would require.

- *

- * \param base_size_log2 \f$log_2\f$ of the size of a side of the texture

- * \param dimensions Number of dimensions of the texture.  Either 2 or 3.

- * \param faces Number of faces of the texture.  Either 1 or 6 (for cube maps).

- * \return Number of texels

- */

-

-static unsigned

-texels_this_map_size( int base_size_log2, unsigned dimensions, unsigned faces )

-{

-   unsigned  texels;

-

-

-   assert( (faces == 1) || (faces == 6) );

-   assert( (dimensions == 2) || (dimensions == 3) );

-

-   texels = 0;

-   if ( base_size_log2 >= 0 ) {

-      texels = (1U << (dimensions * base_size_log2));

-

-      /* See http://www.mail-archive.com/dri-devel@lists.sourceforge.net/msg03636.html

-       * for the complete explaination of why this formulation is used.

-       * Basically, the smaller mipmap levels sum to 0.333 the size of the

-       * level 0 map.  The total size is therefore the size of the map

-       * multipled by 1.333.  The +2 is there to round up.

-       */

-

-      texels = (texels * 4 * faces + 2) / 3;

-   }

-

-   return texels;

-}

-

-

-

-

-struct maps_per_heap {

-   unsigned  c[32];

-};

-

-static void

-fill_in_maximums( driTexHeap * const * heaps, unsigned nr_heaps,

-		  unsigned max_bytes_per_texel, unsigned max_size,

-		  unsigned mipmaps_at_once, unsigned dimensions,

-		  unsigned faces, struct maps_per_heap * max_textures )

-{

-   unsigned   heap;

-   unsigned   log2_size;

-   unsigned   mask;

-

-

-   /* Determine how many textures of each size can be stored in each

-    * texture heap.

-    */

-

-   for ( heap = 0 ; heap < nr_heaps ; heap++ ) {

-      if ( heaps[ heap ] == NULL ) {

-	 (void) memset( max_textures[ heap ].c, 0, 

-			sizeof( max_textures[ heap ].c ) );

-	 continue;

-      }

-

-      mask = (1U << heaps[ heap ]->logGranularity) - 1;

-

-      if ( 0 ) {

-	 fprintf( stderr, "[%s:%d] heap[%u] = %u bytes, mask = 0x%08x\n",

-		  __FILE__, __LINE__,

-		  heap, heaps[ heap ]->size, mask );

-      }

-

-      for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {

-	 unsigned   total;

-

-

-	 /* Determine the total number of bytes required by a texture of

-	  * size log2_size.

-	  */

-

-	 total = texels_this_map_size( log2_size, dimensions, faces )

-	     - texels_this_map_size( log2_size - mipmaps_at_once,

-				     dimensions, faces );

-	 total *= max_bytes_per_texel;

-	 total = (total + mask) & ~mask;

-

-	 /* The number of textures of a given size that will fit in a heap

-	  * is equal to the size of the heap divided by the size of the

-	  * texture.

-	  */

-

-	 max_textures[ heap ].c[ log2_size ] = heaps[ heap ]->size / total;

-

-	 if ( 0 ) {

-	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] "

-		     "= 0x%08x / 0x%08x "

-		     "= %u (%u)\n",

-		     __FILE__, __LINE__,

-		     heap, log2_size,

-		     heaps[ heap ]->size, total,

-		     heaps[ heap ]->size / total,

-		     max_textures[ heap ].c[ log2_size ] );

-	 }

-      }

-   }

-}

-

-

-static unsigned

-get_max_size( unsigned nr_heaps,

-	      unsigned texture_units,

-	      unsigned max_size,

-	      int all_textures_one_heap,

-	      struct maps_per_heap * max_textures )

-{

-   unsigned   heap;

-   unsigned   log2_size;

-

-

-   /* Determine the largest texture size such that a texture of that size

-    * can be bound to each texture unit at the same time.  Some hardware

-    * may require that all textures be in the same texture heap for

-    * multitexturing.

-    */

-

-   for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {

-      unsigned   total = 0;

-

-      for ( heap = 0 ; heap < nr_heaps ; heap++ )

-      {

-	 total += max_textures[ heap ].c[ log2_size ];

-

-	 if ( 0 ) {

-	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] = %u, "

-		     "total = %u\n", __FILE__, __LINE__, heap, log2_size,

-		     max_textures[ heap ].c[ log2_size ], total );

-	 }

-

-	 if ( (max_textures[ heap ].c[ log2_size ] >= texture_units)

-	      || (!all_textures_one_heap && (total >= texture_units)) ) {

-	    /* The number of mipmap levels is the log-base-2 of the

-	     * maximum texture size plus 1.  If the maximum texture size

-	     * is 1x1, the log-base-2 is 0 and 1 mipmap level (the base

-	     * level) is available.

-	     */

-

-	    return log2_size + 1;

-	 }

-      }

-   }

-

-   /* This should NEVER happen.  It should always be possible to have at

-    * *least* a 1x1 texture in memory!

-    */

-   assert( log2_size != 0 );

-   return 0;

-}

-

-#define SET_MAX(f,v) \

-    do { if ( max_sizes[v] != 0 ) { limits-> f = max_sizes[v]; } } while( 0 )

-

-#define SET_MAX_RECT(f,v) \

-    do { if ( max_sizes[v] != 0 ) { limits-> f = 1 << (max_sizes[v] - 1); } } while( 0 )

-

-

-/**

- * Given the amount of texture memory, the number of texture units, and the

- * maximum size of a texel, calculate the maximum texture size the driver can

- * advertise.

- * 

- * \param heaps Texture heaps for this card

- * \param nr_heap Number of texture heaps

- * \param limits OpenGL contants.  MaxTextureUnits must be set.

- * \param max_bytes_per_texel Maximum size of a single texel, in bytes

- * \param max_2D_size \f$\log_2\f$ of the maximum 2D texture size (i.e.,

- *     1024x1024 textures, this would be 10)

- * \param max_3D_size \f$\log_2\f$ of the maximum 3D texture size (i.e.,

- *     1024x1024x1024 textures, this would be 10)

- * \param max_cube_size \f$\log_2\f$ of the maximum cube texture size (i.e.,

- *     1024x1024 textures, this would be 10)

- * \param max_rect_size \f$\log_2\f$ of the maximum texture rectangle size

- *     (i.e., 1024x1024 textures, this would be 10).  This is a power-of-2

- *     even though texture rectangles need not be a power-of-2.

- * \param mipmaps_at_once Total number of mipmaps that can be used

- *     at one time.  For most hardware this will be \f$\c max_size + 1\f$.

- *     For hardware that does not support mipmapping, this will be 1.

- * \param all_textures_one_heap True if the hardware requires that all

- *     textures be in a single texture heap for multitexturing.

- * \param allow_larger_textures 0 conservative, 1 calculate limits

- *     so at least one worst-case texture can fit, 2 just use hw limits.

- */

-

-void

-driCalculateMaxTextureLevels( driTexHeap * const * heaps,

-			      unsigned nr_heaps,

-			      struct gl_constants * limits,

-			      unsigned max_bytes_per_texel,

-			      unsigned max_2D_size,

-			      unsigned max_3D_size,

-			      unsigned max_cube_size,

-			      unsigned max_rect_size,

-			      unsigned mipmaps_at_once,

-			      int all_textures_one_heap,

-			      int allow_larger_textures )

-{

-   struct maps_per_heap  max_textures[8];

-   unsigned         i;

-   const unsigned   dimensions[4] = { 2, 3, 2, 2 };

-   const unsigned   faces[4]      = { 1, 1, 6, 1 };

-   unsigned         max_sizes[4];

-   unsigned         mipmaps[4];

-

-

-   max_sizes[0] = max_2D_size;

-   max_sizes[1] = max_3D_size;

-   max_sizes[2] = max_cube_size;

-   max_sizes[3] = max_rect_size;

-

-   mipmaps[0] = mipmaps_at_once;

-   mipmaps[1] = mipmaps_at_once;

-   mipmaps[2] = mipmaps_at_once;

-   mipmaps[3] = 1;

-

-

-   /* Calculate the maximum number of texture levels in two passes.  The

-    * first pass determines how many textures of each power-of-two size

-    * (including all mipmap levels for that size) can fit in each texture

-    * heap.  The second pass finds the largest texture size that allows

-    * a texture of that size to be bound to every texture unit.

-    */

-

-   for ( i = 0 ; i < 4 ; i++ ) {

-      if ( (allow_larger_textures != 2) && (max_sizes[ i ] != 0) ) {

-	 fill_in_maximums( heaps, nr_heaps, max_bytes_per_texel,

-			   max_sizes[ i ], mipmaps[ i ],

-			   dimensions[ i ], faces[ i ],

-			   max_textures );

-

-	 max_sizes[ i ] = get_max_size( nr_heaps,

-					allow_larger_textures == 1 ?

-					1 : limits->MaxTextureUnits,

-					max_sizes[ i ],

-					all_textures_one_heap,

-					max_textures );

-      }

-      else if (max_sizes[ i ] != 0) {

-	 max_sizes[ i ] += 1;

-      }

-   }

-

-   SET_MAX( MaxTextureLevels,        0 );

-   SET_MAX( Max3DTextureLevels,      1 );

-   SET_MAX( MaxCubeTextureLevels,    2 );

-   SET_MAX_RECT( MaxTextureRectSize, 3 );

-}

-

-

-

-

-/**

- * Perform initial binding of default textures objects on a per unit, per

- * texture target basis.

- *

- * \param ctx Current OpenGL context

- * \param swapped List of swapped-out textures

- * \param targets Bit-mask of value texture targets

- */

-

-void driInitTextureObjects( struct gl_context *ctx, driTextureObject * swapped,

-			    GLuint targets )

-{

-   struct gl_texture_object *texObj;

-   GLuint tmp = ctx->Texture.CurrentUnit;

-   unsigned   i;

-

-

-   for ( i = 0 ; i < ctx->Const.MaxTextureUnits ; i++ ) {

-      ctx->Texture.CurrentUnit = i;

-

-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_1D) != 0 ) {

-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_1D_INDEX];

-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_1D, texObj );

-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

-      }

-

-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_2D) != 0 ) {

-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_2D_INDEX];

-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_2D, texObj );

-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

-      }

-

-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_3D) != 0 ) {

-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_3D_INDEX];

-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_3D, texObj );

-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

-      }

-

-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_CUBE) != 0 ) {

-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_CUBE_INDEX];

-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_CUBE_MAP_ARB, texObj );

-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

-      }

-

-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_RECT) != 0 ) {

-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_RECT_INDEX];

-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_RECTANGLE_NV, texObj );

-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

-      }

-   }

-

-   ctx->Texture.CurrentUnit = tmp;

-}

-

-

-

-

-/**

- * Verify that the specified texture is in the specificed heap.

- * 

- * \param tex   Texture to be tested.

- * \param heap  Texture memory heap to be tested.

- * \return True if the texture is in the heap, false otherwise.

- */

-

-static GLboolean

-check_in_heap( const driTextureObject * tex, const driTexHeap * heap )

-{

-#if 1

-   return tex->heap == heap;

-#else

-   driTextureObject * curr;

-

-   foreach( curr, & heap->texture_objects ) {

-      if ( curr == tex ) {

-	 break;

-      }

-   }

-

-   return curr == tex;

-#endif

-}

-

-

-

-/****************************************************************************/

-/**

- * Validate the consistency of a set of texture heaps.

- * Original version by Keith Whitwell in r200/r200_sanity.c.

- */

-

-GLboolean

-driValidateTextureHeaps( driTexHeap * const * texture_heaps,

-			 unsigned nr_heaps, const driTextureObject * swapped )

-{

-   driTextureObject *t;

-   unsigned  i;

-

-   for ( i = 0 ; i < nr_heaps ; i++ ) {

-      int last_end = 0;

-      unsigned textures_in_heap = 0;

-      unsigned blocks_in_mempool = 0;

-      const driTexHeap * heap = texture_heaps[i];

-      const struct mem_block *p = heap->memory_heap;

-

-      /* Check each texture object has a MemBlock, and is linked into

-       * the correct heap.  

-       *

-       * Check the texobj base address corresponds to the MemBlock

-       * range.  Check the texobj size (recalculate?) fits within

-       * the MemBlock.

-       *

-       * Count the number of texobj's using this heap.

-       */

-

-      foreach ( t, &heap->texture_objects ) {

-	 if ( !check_in_heap( t, heap ) ) {

-	    fprintf( stderr, "%s memory block for texture object @ %p not "

-		     "found in heap #%d\n",

-		     __FUNCTION__, (void *)t, i );

-	    return GL_FALSE;

-	 }

-

-

-	 if ( t->totalSize > t->memBlock->size ) {

-	    fprintf( stderr, "%s: Memory block for texture object @ %p is "

-		     "only %u bytes, but %u are required\n",

-		     __FUNCTION__, (void *)t, t->totalSize, t->memBlock->size );

-	    return GL_FALSE;

-	 }

-

-	 textures_in_heap++;

-      }

-

-      /* Validate the contents of the heap:

-       *   - Ordering

-       *   - Overlaps

-       *   - Bounds

-       */

-

-      while ( p != NULL ) {

-	 if (p->reserved) {

-	    fprintf( stderr, "%s: Block (%08x,%x), is reserved?!\n",

-		     __FUNCTION__, p->ofs, p->size );

-	    return GL_FALSE;

-	 }

-

-	 if (p->ofs != last_end) {

-	    fprintf( stderr, "%s: blocks_in_mempool = %d, last_end = %d, p->ofs = %d\n",

-		     __FUNCTION__, blocks_in_mempool, last_end, p->ofs );

-	    return GL_FALSE;

-	 }

-

-	 if (!p->reserved && !p->free) {

-	    blocks_in_mempool++;

-	 }

-

-	 last_end = p->ofs + p->size;

-	 p = p->next;

-      }

-

-      if (textures_in_heap != blocks_in_mempool) {

-	 fprintf( stderr, "%s: Different number of textures objects (%u) and "

-		  "inuse memory blocks (%u)\n", 

-		  __FUNCTION__, textures_in_heap, blocks_in_mempool );

-	 return GL_FALSE;

-      }

-

-#if 0

-      fprintf( stderr, "%s: textures_in_heap = %u\n", 

-	       __FUNCTION__, textures_in_heap );

-#endif

-   }

-

-

-   /* Check swapped texobj's have zero memblocks

-    */

-   i = 0;

-   foreach ( t, swapped ) {

-      if ( t->memBlock != NULL ) {

-	 fprintf( stderr, "%s: Swapped texobj %p has non-NULL memblock %p\n",

-		  __FUNCTION__, (void *)t, (void *)t->memBlock );

-	 return GL_FALSE;

-      }

-      i++;

-   }

-

-#if 0

-   fprintf( stderr, "%s: swapped texture count = %u\n", __FUNCTION__, i );

-#endif

-

-   return GL_TRUE;

-}

-

-

-

-

-/****************************************************************************/

-/**

- * Compute which mipmap levels that really need to be sent to the hardware.

- * This depends on the base image size, GL_TEXTURE_MIN_LOD,

- * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.

- */

-

-void

-driCalculateTextureFirstLastLevel( driTextureObject * t )

-{

-   struct gl_texture_object * const tObj = t->tObj;

-   const struct gl_texture_image * const baseImage =

-       tObj->Image[0][tObj->BaseLevel];

-

-   /* These must be signed values.  MinLod and MaxLod can be negative numbers,

-    * and having firstLevel and lastLevel as signed prevents the need for

-    * extra sign checks.

-    */

-   int   firstLevel;

-   int   lastLevel;

-

-   /* Yes, this looks overly complicated, but it's all needed.

-    */

-

-   switch (tObj->Target) {

-   case GL_TEXTURE_1D:

-   case GL_TEXTURE_2D:

-   case GL_TEXTURE_3D:

-   case GL_TEXTURE_CUBE_MAP:

-      if (tObj->Sampler.MinFilter == GL_NEAREST ||

-          tObj->Sampler.MinFilter == GL_LINEAR) {

-         /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.

-          */

-

-         firstLevel = lastLevel = tObj->BaseLevel;

-      }

-      else {

-	 firstLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MinLod + 0.5);

-	 firstLevel = MAX2(firstLevel, tObj->BaseLevel);

-	 firstLevel = MIN2(firstLevel, tObj->BaseLevel + baseImage->MaxLog2);

-	 lastLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MaxLod + 0.5);

-	 lastLevel = MAX2(lastLevel, t->tObj->BaseLevel);

-	 lastLevel = MIN2(lastLevel, t->tObj->BaseLevel + baseImage->MaxLog2);

-	 lastLevel = MIN2(lastLevel, t->tObj->MaxLevel);

-	 lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */

-      }

-      break;

-   case GL_TEXTURE_RECTANGLE_NV:

-   case GL_TEXTURE_4D_SGIS:

-      firstLevel = lastLevel = 0;

-      break;

-   default:

-      return;

-   }

-

-   /* save these values */

-   t->firstLevel = firstLevel;

-   t->lastLevel = lastLevel;

-}

-

-

-

-

-/**

- * \name DRI texture formats.  These vars are initialized to either the

- * big- or little-endian Mesa formats.

- */

-/*@{*/

-gl_format _dri_texformat_rgba8888 = MESA_FORMAT_NONE;

-gl_format _dri_texformat_argb8888 = MESA_FORMAT_NONE;

-gl_format _dri_texformat_rgb565 = MESA_FORMAT_NONE;

-gl_format _dri_texformat_argb4444 = MESA_FORMAT_NONE;

-gl_format _dri_texformat_argb1555 = MESA_FORMAT_NONE;

-gl_format _dri_texformat_al88 = MESA_FORMAT_NONE;

-gl_format _dri_texformat_a8 = MESA_FORMAT_A8;

-gl_format _dri_texformat_i8 = MESA_FORMAT_I8;

-gl_format _dri_texformat_l8 = MESA_FORMAT_L8;

-/*@}*/

-

-

-/**

- * Initialize _dri_texformat_* vars according to whether we're on

- * a big or little endian system.

- */

-void

-driInitTextureFormats(void)

-{

-   if (_mesa_little_endian()) {

-      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888;

-      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888;

-      _dri_texformat_rgb565	= MESA_FORMAT_RGB565;

-      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444;

-      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555;

-      _dri_texformat_al88	= MESA_FORMAT_AL88;

-   }

-   else {

-      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888_REV;

-      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888_REV;

-      _dri_texformat_rgb565	= MESA_FORMAT_RGB565_REV;

-      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444_REV;

-      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555_REV;

-      _dri_texformat_al88	= MESA_FORMAT_AL88_REV;

-   }

-}

+/*
+ * Copyright 2000-2001 VA Linux Systems, Inc.
+ * (C) Copyright IBM Corporation 2002, 2003
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Ian Romanick <idr@us.ibm.com>
+ *    Keith Whitwell <keithw@tungstengraphics.com>
+ *    Kevin E. Martin <kem@users.sourceforge.net>
+ *    Gareth Hughes <gareth@nvidia.com>
+ */
+
+/** \file texmem.c
+ * Implements all of the device-independent texture memory management.
+ * 
+ * Currently, only a simple LRU texture memory management policy is
+ * implemented.  In the (hopefully very near) future, better policies will be
+ * implemented.  The idea is that the DRI should be able to run in one of two
+ * modes.  In the default mode the DRI will dynamically attempt to discover
+ * the best texture management policy for the running application.  In the
+ * other mode, the user (via some sort of as yet TBD mechanism) will select
+ * a texture management policy that is known to work well with the
+ * application.
+ */
+
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/simple_list.h"
+#include "texmem.h"
+
+
+static unsigned dummy_swap_counter;
+
+
+/**
+ * Calculate \f$\log_2\f$ of a value.  This is a particularly poor
+ * implementation of this function.  However, since system performance is in
+ * no way dependent on this function, the slowness of the implementation is
+ * irrelevent.
+ * 
+ * \param n Value whose \f$\log_2\f$ is to be calculated
+ */
+
+static GLuint
+driLog2( GLuint n )
+{
+   GLuint log2;
+
+   for ( log2 = 1 ; n > 1 ; log2++ ) {
+      n >>= 1;
+   }
+
+   return log2;
+}
+
+
+
+
+/**
+ * Determine if a texture is resident in textureable memory.  Depending on
+ * the driver, this may or may not be on-card memory.  It could be AGP memory
+ * or anyother type of memory from which the hardware can directly read
+ * texels.
+ * 
+ * This function is intended to be used as the \c IsTextureResident function
+ * in the device's \c dd_function_table.
+ * 
+ * \param ctx GL context pointer (currently unused)
+ * \param texObj Texture object to be tested
+ */
+
+GLboolean
+driIsTextureResident( struct gl_context * ctx, 
+		      struct gl_texture_object * texObj )
+{
+   driTextureObject * t;
+
+
+   t = (driTextureObject *) texObj->DriverData;
+   return( (t != NULL) && (t->memBlock != NULL) );
+}
+
+
+
+
+/**
+ * (Re)initialize the global circular LRU list.  The last element
+ * in the array (\a heap->nrRegions) is the sentinal.  Keeping it
+ * at the end of the array allows the other elements of the array
+ * to be addressed rationally when looking up objects at a particular
+ * location in texture memory.
+ * 
+ * \param heap Texture heap to be reset
+ */
+
+static void resetGlobalLRU( driTexHeap * heap )
+{
+   drmTextureRegionPtr list = heap->global_regions;
+   unsigned       sz = 1U << heap->logGranularity;
+   unsigned       i;
+
+   for (i = 0 ; (i+1) * sz <= heap->size ; i++) {
+      list[i].prev = i-1;
+      list[i].next = i+1;
+      list[i].age = 0;
+   }
+
+   i--;
+   list[0].prev = heap->nrRegions;
+   list[i].prev = i-1;
+   list[i].next = heap->nrRegions;
+   list[heap->nrRegions].prev = i;
+   list[heap->nrRegions].next = 0;
+   heap->global_age[0] = 0;
+}
+
+/**
+ * Print out debugging information about the local texture LRU.
+ *
+ * \param heap Texture heap to be printed
+ * \param callername Name of calling function
+ */
+static void printLocalLRU( driTexHeap * heap, const char *callername  )
+{
+   driTextureObject *t;
+   unsigned sz = 1U << heap->logGranularity;
+
+   fprintf( stderr, "%s in %s:\nLocal LRU, heap %d:\n", 
+	    __FUNCTION__, callername, heap->heapId );
+
+   foreach ( t, &heap->texture_objects ) {
+      if (!t->memBlock)
+	 continue;
+      if (!t->tObj) {
+	 fprintf( stderr, "Placeholder (%p) %d at 0x%x sz 0x%x\n",
+		  (void *)t,
+		  t->memBlock->ofs / sz,
+		  t->memBlock->ofs,
+		  t->memBlock->size );
+      } else {
+	 fprintf( stderr, "Texture (%p) at 0x%x sz 0x%x\n",
+		  (void *)t,
+		  t->memBlock->ofs,
+		  t->memBlock->size );
+      }
+   }
+   foreach ( t, heap->swapped_objects ) {
+      if (!t->tObj) {
+	 fprintf( stderr, "Swapped Placeholder (%p)\n", (void *)t );
+      } else {
+	 fprintf( stderr, "Swapped Texture (%p)\n", (void *)t );
+      }
+   }
+
+   fprintf( stderr, "\n" );
+}
+
+/**
+ * Print out debugging information about the global texture LRU.
+ *
+ * \param heap Texture heap to be printed
+ * \param callername Name of calling function
+ */
+static void printGlobalLRU( driTexHeap * heap, const char *callername )
+{
+   drmTextureRegionPtr list = heap->global_regions;
+   unsigned int i, j;
+
+   fprintf( stderr, "%s in %s:\nGlobal LRU, heap %d list %p:\n", 
+	    __FUNCTION__, callername, heap->heapId, (void *)list );
+
+   for ( i = 0, j = heap->nrRegions ; i < heap->nrRegions ; i++ ) {
+      fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",
+	       j, list[j].age, list[j].next, list[j].prev, list[j].in_use );
+      j = list[j].next;
+      if ( j == heap->nrRegions ) break;
+   }
+
+   if ( j != heap->nrRegions ) {
+      fprintf( stderr, "Loop detected in global LRU\n" );
+      for ( i = 0 ; i < heap->nrRegions ; i++ ) {
+	 fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",
+		  i, list[i].age, list[i].next, list[i].prev, list[i].in_use );
+      }
+   }
+
+   fprintf( stderr, "\n" );
+}
+
+
+/**
+ * Called by the client whenever it touches a local texture.
+ * 
+ * \param t Texture object that the client has accessed
+ */
+
+void driUpdateTextureLRU( driTextureObject * t )
+{
+   driTexHeap   * heap;
+   drmTextureRegionPtr list;
+   unsigned   shift;
+   unsigned   start;
+   unsigned   end;
+   unsigned   i;
+
+
+   heap = t->heap;
+   if ( heap != NULL ) {
+      shift = heap->logGranularity;
+      start = t->memBlock->ofs >> shift;
+      end = (t->memBlock->ofs + t->memBlock->size - 1) >> shift;
+
+
+      heap->local_age = ++heap->global_age[0];
+      list = heap->global_regions;
+
+
+      /* Update the context's local LRU 
+       */
+
+      move_to_head( & heap->texture_objects, t );
+
+
+      for (i = start ; i <= end ; i++) {
+	 list[i].age = heap->local_age;
+
+	 /* remove_from_list(i)
+	  */
+	 list[(unsigned)list[i].next].prev = list[i].prev;
+	 list[(unsigned)list[i].prev].next = list[i].next;
+
+	 /* insert_at_head(list, i)
+	  */
+	 list[i].prev = heap->nrRegions;
+	 list[i].next = list[heap->nrRegions].next;
+	 list[(unsigned)list[heap->nrRegions].next].prev = i;
+	 list[heap->nrRegions].next = i;
+      }
+
+      if ( 0 ) {
+	 printGlobalLRU( heap, __FUNCTION__ );
+	 printLocalLRU( heap, __FUNCTION__ );
+      }
+   }
+}
+
+
+
+
+/**
+ * Keep track of swapped out texture objects.
+ * 
+ * \param t Texture object to be "swapped" out of its texture heap
+ */
+
+void driSwapOutTextureObject( driTextureObject * t )
+{
+   unsigned   face;
+
+
+   if ( t->memBlock != NULL ) {
+      assert( t->heap != NULL );
+      mmFreeMem( t->memBlock );
+      t->memBlock = NULL;
+
+      if (t->timestamp > t->heap->timestamp)
+	 t->heap->timestamp = t->timestamp;
+
+      t->heap->texture_swaps[0]++;
+      move_to_tail( t->heap->swapped_objects, t );
+      t->heap = NULL;
+   }
+   else {
+      assert( t->heap == NULL );
+   }
+
+
+   for ( face = 0 ; face < 6 ; face++ ) {
+      t->dirty_images[face] = ~0;
+   }
+}
+
+
+
+
+/**
+ * Destroy hardware state associated with texture \a t.  Calls the
+ * \a destroy_texture_object method associated with the heap from which
+ * \a t was allocated.
+ * 
+ * \param t Texture object to be destroyed
+ */
+
+void driDestroyTextureObject( driTextureObject * t )
+{
+   driTexHeap * heap;
+
+
+   if ( 0 ) {
+      fprintf( stderr, "[%s:%d] freeing %p (tObj = %p, DriverData = %p)\n",
+	       __FILE__, __LINE__,
+	       (void *)t,
+	       (void *)((t != NULL) ? t->tObj : NULL),
+	       (void *)((t != NULL && t->tObj != NULL) ? t->tObj->DriverData : NULL ));
+   }
+
+   if ( t != NULL ) {
+      if ( t->memBlock ) {
+	 heap = t->heap;
+	 assert( heap != NULL );
+
+	 heap->texture_swaps[0]++;
+
+	 mmFreeMem( t->memBlock );
+	 t->memBlock = NULL;
+
+	 if (t->timestamp > t->heap->timestamp)
+	    t->heap->timestamp = t->timestamp;
+
+	 heap->destroy_texture_object( heap->driverContext, t );
+	 t->heap = NULL;
+      }
+
+      if ( t->tObj != NULL ) {
+	 assert( t->tObj->DriverData == t );
+	 t->tObj->DriverData = NULL;
+      }
+
+      remove_from_list( t );
+      FREE( t );
+   }
+
+   if ( 0 ) {
+      fprintf( stderr, "[%s:%d] done freeing %p\n", __FILE__, __LINE__, (void *)t );
+   }
+}
+
+
+
+
+/**
+ * Update the local heap's representation of texture memory based on
+ * data in the SAREA.  This is done each time it is detected that some other
+ * direct rendering client has held the lock.  This pertains to both our local
+ * textures and the textures belonging to other clients.  Keep track of other
+ * client's textures by pushing a placeholder texture onto the LRU list --
+ * these are denoted by \a tObj being \a NULL.
+ * 
+ * \param heap Heap whose state is to be updated
+ * \param offset Byte offset in the heap that has been stolen
+ * \param size Size, in bytes, of the stolen block
+ * \param in_use Non-zero if the block is pinned/reserved by the kernel
+ */
+
+static void driTexturesGone( driTexHeap * heap, int offset, int size, 
+			     int in_use )
+{
+   driTextureObject * t;
+   driTextureObject * tmp;
+
+
+   foreach_s ( t, tmp, & heap->texture_objects ) {
+      if ( (t->memBlock->ofs < (offset + size))
+	   && ((t->memBlock->ofs + t->memBlock->size) > offset) ) {
+	 /* It overlaps - kick it out.  If the texture object is just a
+	  * place holder, then destroy it all together.  Otherwise, mark
+	  * it as being swapped out.
+	  */
+
+	 if ( t->tObj != NULL ) {
+	    driSwapOutTextureObject( t );
+	 }
+	 else {
+	    driDestroyTextureObject( t );
+	 }
+      }
+   }
+
+
+   {
+      t = (driTextureObject *) CALLOC( heap->texture_object_size );
+      if ( t == NULL ) return;
+
+      t->memBlock = mmAllocMem( heap->memory_heap, size, 0, offset );
+      if ( t->memBlock == NULL ) {
+	 fprintf( stderr, "Couldn't alloc placeholder: heap %u sz %x ofs %x\n", heap->heapId,
+		  (int)size, (int)offset );
+	 mmDumpMemInfo( heap->memory_heap );
+	 FREE(t);
+	 return;
+      }
+      t->heap = heap;
+      if (in_use) 
+	 t->reserved = 1; 
+      insert_at_head( & heap->texture_objects, t );
+   }
+}
+
+
+
+
+/**
+ * Called by the client on lock contention to determine whether textures have
+ * been stolen.  If another client has modified a region in which we have
+ * textures, then we need to figure out which of our textures have been
+ * removed and update our global LRU.
+ * 
+ * \param heap Texture heap to be updated
+ */
+
+void driAgeTextures( driTexHeap * heap )
+{
+   drmTextureRegionPtr list = heap->global_regions;
+   unsigned       sz = 1U << (heap->logGranularity);
+   unsigned       i, nr = 0;
+
+
+   /* Have to go right round from the back to ensure stuff ends up
+    * LRU in the local list...  Fix with a cursor pointer.
+    */
+
+   for (i = list[heap->nrRegions].prev ; 
+	i != heap->nrRegions && nr < heap->nrRegions ; 
+	i = list[i].prev, nr++) {
+      /* If switching texturing schemes, then the SAREA might not have been
+       * properly cleared, so we need to reset the global texture LRU.
+       */
+
+      if ( (i * sz) > heap->size ) {
+	 nr = heap->nrRegions;
+	 break;
+      }
+
+      if (list[i].age > heap->local_age) 
+	  driTexturesGone( heap, i * sz, sz, list[i].in_use); 
+   }
+
+   /* Loop or uninitialized heap detected.  Reset.
+    */
+
+   if (nr == heap->nrRegions) {
+      driTexturesGone( heap, 0, heap->size, 0);
+      resetGlobalLRU( heap );
+   }
+
+   if ( 0 ) {
+      printGlobalLRU( heap, __FUNCTION__ );
+      printLocalLRU( heap, __FUNCTION__ );
+   }
+
+   heap->local_age = heap->global_age[0];
+}
+
+
+
+
+#define INDEX_ARRAY_SIZE 6 /* I'm not aware of driver with more than 2 heaps */
+
+/**
+ * Allocate memory from a texture heap to hold a texture object.  This
+ * routine will attempt to allocate memory for the texture from the heaps
+ * specified by \c heap_array in order.  That is, first it will try to
+ * allocate from \c heap_array[0], then \c heap_array[1], and so on.
+ *
+ * \param heap_array Array of pointers to texture heaps to use
+ * \param nr_heaps Number of heap pointer in \a heap_array
+ * \param t Texture object for which space is needed
+ * \return The ID of the heap from which memory was allocated, or -1 if
+ *         memory could not be allocated.
+ *
+ * \bug The replacement policy implemented by this function is horrible.
+ */
+
+
+int
+driAllocateTexture( driTexHeap * const * heap_array, unsigned nr_heaps,
+		    driTextureObject * t )
+{
+   driTexHeap       * heap;
+   driTextureObject * temp;
+   driTextureObject * cursor;
+   unsigned           id;
+
+
+   /* In case it already has texture space, initialize heap.  This also
+    * prevents GCC from issuing a warning that heap might be used
+    * uninitialized.
+    */
+
+   heap = t->heap;
+
+
+   /* Run through each of the existing heaps and try to allocate a buffer
+    * to hold the texture.
+    */
+
+   for ( id = 0 ; (t->memBlock == NULL) && (id < nr_heaps) ; id++ ) {
+      heap = heap_array[ id ];
+      if ( heap != NULL ) {
+	 t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 
+				   heap->alignmentShift, 0 );
+      }
+   }
+
+
+   /* Kick textures out until the requested texture fits.
+    */
+
+   if ( t->memBlock == NULL ) {
+      unsigned index[INDEX_ARRAY_SIZE];
+      unsigned nrGoodHeaps = 0;
+
+      /* Trying to avoid dynamic memory allocation. If you have more
+       * heaps, increase INDEX_ARRAY_SIZE. I'm not aware of any
+       * drivers with more than 2 tex heaps. */
+      assert( nr_heaps < INDEX_ARRAY_SIZE );
+
+      /* Sort large enough heaps by duty. Insertion sort should be
+       * fast enough for such a short array. */
+      for ( id = 0 ; id < nr_heaps ; id++ ) {
+	 heap = heap_array[ id ];
+
+	 if ( heap != NULL && t->totalSize <= heap->size ) {
+	    unsigned j;
+
+	    for ( j = 0 ; j < nrGoodHeaps; j++ ) {
+	       if ( heap->duty > heap_array[ index[ j ] ]->duty )
+		  break;
+	    }
+
+	    if ( j < nrGoodHeaps ) {
+	       memmove( &index[ j+1 ], &index[ j ],
+			sizeof(index[ 0 ]) * (nrGoodHeaps - j) );
+	    }
+
+	    index[ j ] = id;
+
+	    nrGoodHeaps++;
+	 }
+      }
+
+      for ( id = 0 ; (t->memBlock == NULL) && (id < nrGoodHeaps) ; id++ ) {
+	 heap = heap_array[ index[ id ] ];
+
+	 for ( cursor = heap->texture_objects.prev, temp = cursor->prev;
+	       cursor != &heap->texture_objects ; 
+	       cursor = temp, temp = cursor->prev ) {
+	       
+	    /* The the LRU element.  If the texture is bound to one of
+	     * the texture units, then we cannot kick it out.
+	     */
+	    if ( cursor->bound || cursor->reserved ) {
+	       continue;
+	    }
+
+	    if ( cursor->memBlock )
+	       heap->duty -= cursor->memBlock->size;
+
+	    /* If this is a placeholder, there's no need to keep it */
+	    if (cursor->tObj)
+	       driSwapOutTextureObject( cursor );
+	    else
+	       driDestroyTextureObject( cursor );
+
+	    t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 
+				      heap->alignmentShift, 0 );
+
+	    if (t->memBlock)
+	       break;
+	 }
+      }
+
+      /* Rebalance duties. If a heap kicked more data than its duty,
+       * then all other heaps get that amount multiplied with their
+       * relative weight added to their duty. The negative duty is
+       * reset to 0. In the end all heaps have a duty >= 0.
+       *
+       * CAUTION: we must not change the heap pointer here, because it
+       * is used below to update the texture object.
+       */
+      for ( id = 0 ; id < nr_heaps ; id++ )
+	 if ( heap_array[ id ] != NULL && heap_array[ id ]->duty < 0) {
+	    int duty = -heap_array[ id ]->duty;
+	    double weight = heap_array[ id ]->weight;
+	    unsigned j;
+
+	    for ( j = 0 ; j < nr_heaps ; j++ )
+	       if ( j != id && heap_array[ j ] != NULL ) {
+		  heap_array[ j ]->duty += (double) duty *
+		     heap_array[ j ]->weight / weight;
+	       }
+
+	    heap_array[ id ]->duty = 0;
+	 }
+   }
+
+
+   if ( t->memBlock != NULL ) {
+      /* id and heap->heapId may or may not be the same value here.
+       */
+
+      assert( heap != NULL );
+      assert( (t->heap == NULL) || (t->heap == heap) );
+
+      t->heap = heap;
+      return heap->heapId;
+   }
+   else {
+      assert( t->heap == NULL );
+
+      fprintf( stderr, "[%s:%d] unable to allocate texture\n",
+	       __FUNCTION__, __LINE__ );
+      return -1;
+   }
+}
+
+
+
+
+
+
+/**
+ * Set the location where the texture-swap counter is stored.
+ */
+
+void
+driSetTextureSwapCounterLocation( driTexHeap * heap, unsigned * counter )
+{
+   heap->texture_swaps = (counter == NULL) ? & dummy_swap_counter : counter;
+}
+
+
+
+
+/**
+ * Create a new heap for texture data.
+ * 
+ * \param heap_id             Device-dependent heap identifier.  This value
+ *                            will returned by driAllocateTexture when memory
+ *                            is allocated from this heap.
+ * \param context             Device-dependent driver context.  This is
+ *                            supplied as the first parameter to the
+ *                            \c destroy_tex_obj function.
+ * \param size                Size, in bytes, of the texture region
+ * \param alignmentShift      Alignment requirement for textures.  If textures 
+ *                            must be allocated on a 4096 byte boundry, this
+ *                            would be 12.
+ * \param nr_regions          Number of regions into which this texture space
+ *                            should be partitioned
+ * \param global_regions      Array of \c drmTextureRegion structures in the SAREA
+ * \param global_age          Pointer to the global texture age in the SAREA
+ * \param swapped_objects     Pointer to the list of texture objects that are
+ *                            not in texture memory (i.e., have been swapped
+ *                            out).
+ * \param texture_object_size Size, in bytes, of a device-dependent texture
+ *                            object
+ * \param destroy_tex_obj     Function used to destroy a device-dependent
+ *                            texture object
+ *
+ * \sa driDestroyTextureHeap
+ */
+
+driTexHeap *
+driCreateTextureHeap( unsigned heap_id, void * context, unsigned size,
+		      unsigned alignmentShift, unsigned nr_regions,
+		      drmTextureRegionPtr global_regions, unsigned * global_age,
+		      driTextureObject * swapped_objects, 
+		      unsigned texture_object_size,
+		      destroy_texture_object_t * destroy_tex_obj
+		    )
+{
+   driTexHeap * heap;
+   unsigned     l;
+    
+    
+   if ( 0 )
+       fprintf( stderr, "%s( %u, %p, %u, %u, %u )\n",
+		__FUNCTION__,
+		heap_id, (void *)context, size, alignmentShift, nr_regions );
+
+   heap = (driTexHeap *) CALLOC( sizeof( driTexHeap ) );
+   if ( heap != NULL ) {
+      l = driLog2( (size - 1) / nr_regions );
+      if ( l < alignmentShift )
+      {
+	 l = alignmentShift;
+      }
+
+      heap->logGranularity = l;
+      heap->size = size & ~((1L << l) - 1);
+
+      heap->memory_heap = mmInit( 0, heap->size );
+      if ( heap->memory_heap != NULL ) {
+	 heap->heapId = heap_id;
+	 heap->driverContext = context;
+
+	 heap->alignmentShift = alignmentShift;
+	 heap->nrRegions = nr_regions;
+	 heap->global_regions = global_regions;
+	 heap->global_age = global_age;
+	 heap->swapped_objects = swapped_objects;
+	 heap->texture_object_size = texture_object_size;
+	 heap->destroy_texture_object = destroy_tex_obj;
+
+	 /* Force global heap init */
+	 if (heap->global_age[0] == 0)
+	     heap->local_age = ~0;
+	 else
+	     heap->local_age = 0;
+
+	 make_empty_list( & heap->texture_objects );
+	 driSetTextureSwapCounterLocation( heap, NULL );
+
+	 heap->weight = heap->size;
+	 heap->duty = 0;
+      }
+      else {
+	 FREE( heap );
+	 heap = NULL;
+      }
+   }
+
+
+   if ( 0 )
+       fprintf( stderr, "%s returning %p\n", __FUNCTION__, (void *)heap );
+
+   return heap;
+}
+
+
+
+
+/** Destroys a texture heap
+ * 
+ * \param heap Texture heap to be destroyed
+ */
+
+void
+driDestroyTextureHeap( driTexHeap * heap )
+{
+   driTextureObject * t;
+   driTextureObject * temp;
+
+
+   if ( heap != NULL ) {
+      foreach_s( t, temp, & heap->texture_objects ) {
+	 driDestroyTextureObject( t );
+      }
+      foreach_s( t, temp, heap->swapped_objects ) {
+	 driDestroyTextureObject( t );
+      }
+
+      mmDestroy( heap->memory_heap );
+      FREE( heap );
+   }
+}
+
+
+
+
+/****************************************************************************/
+/**
+ * Determine how many texels (including all mipmap levels) would be required
+ * for a texture map of size \f$2^^\c base_size_log2\f$ would require.
+ *
+ * \param base_size_log2 \f$log_2\f$ of the size of a side of the texture
+ * \param dimensions Number of dimensions of the texture.  Either 2 or 3.
+ * \param faces Number of faces of the texture.  Either 1 or 6 (for cube maps).
+ * \return Number of texels
+ */
+
+static unsigned
+texels_this_map_size( int base_size_log2, unsigned dimensions, unsigned faces )
+{
+   unsigned  texels;
+
+
+   assert( (faces == 1) || (faces == 6) );
+   assert( (dimensions == 2) || (dimensions == 3) );
+
+   texels = 0;
+   if ( base_size_log2 >= 0 ) {
+      texels = (1U << (dimensions * base_size_log2));
+
+      /* See http://www.mail-archive.com/dri-devel@lists.sourceforge.net/msg03636.html
+       * for the complete explaination of why this formulation is used.
+       * Basically, the smaller mipmap levels sum to 0.333 the size of the
+       * level 0 map.  The total size is therefore the size of the map
+       * multipled by 1.333.  The +2 is there to round up.
+       */
+
+      texels = (texels * 4 * faces + 2) / 3;
+   }
+
+   return texels;
+}
+
+
+
+
+struct maps_per_heap {
+   unsigned  c[32];
+};
+
+static void
+fill_in_maximums( driTexHeap * const * heaps, unsigned nr_heaps,
+		  unsigned max_bytes_per_texel, unsigned max_size,
+		  unsigned mipmaps_at_once, unsigned dimensions,
+		  unsigned faces, struct maps_per_heap * max_textures )
+{
+   unsigned   heap;
+   unsigned   log2_size;
+   unsigned   mask;
+
+
+   /* Determine how many textures of each size can be stored in each
+    * texture heap.
+    */
+
+   for ( heap = 0 ; heap < nr_heaps ; heap++ ) {
+      if ( heaps[ heap ] == NULL ) {
+	 (void) memset( max_textures[ heap ].c, 0, 
+			sizeof( max_textures[ heap ].c ) );
+	 continue;
+      }
+
+      mask = (1U << heaps[ heap ]->logGranularity) - 1;
+
+      if ( 0 ) {
+	 fprintf( stderr, "[%s:%d] heap[%u] = %u bytes, mask = 0x%08x\n",
+		  __FILE__, __LINE__,
+		  heap, heaps[ heap ]->size, mask );
+      }
+
+      for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {
+	 unsigned   total;
+
+
+	 /* Determine the total number of bytes required by a texture of
+	  * size log2_size.
+	  */
+
+	 total = texels_this_map_size( log2_size, dimensions, faces )
+	     - texels_this_map_size( log2_size - mipmaps_at_once,
+				     dimensions, faces );
+	 total *= max_bytes_per_texel;
+	 total = (total + mask) & ~mask;
+
+	 /* The number of textures of a given size that will fit in a heap
+	  * is equal to the size of the heap divided by the size of the
+	  * texture.
+	  */
+
+	 max_textures[ heap ].c[ log2_size ] = heaps[ heap ]->size / total;
+
+	 if ( 0 ) {
+	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] "
+		     "= 0x%08x / 0x%08x "
+		     "= %u (%u)\n",
+		     __FILE__, __LINE__,
+		     heap, log2_size,
+		     heaps[ heap ]->size, total,
+		     heaps[ heap ]->size / total,
+		     max_textures[ heap ].c[ log2_size ] );
+	 }
+      }
+   }
+}
+
+
+static unsigned
+get_max_size( unsigned nr_heaps,
+	      unsigned texture_units,
+	      unsigned max_size,
+	      int all_textures_one_heap,
+	      struct maps_per_heap * max_textures )
+{
+   unsigned   heap;
+   unsigned   log2_size;
+
+
+   /* Determine the largest texture size such that a texture of that size
+    * can be bound to each texture unit at the same time.  Some hardware
+    * may require that all textures be in the same texture heap for
+    * multitexturing.
+    */
+
+   for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {
+      unsigned   total = 0;
+
+      for ( heap = 0 ; heap < nr_heaps ; heap++ )
+      {
+	 total += max_textures[ heap ].c[ log2_size ];
+
+	 if ( 0 ) {
+	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] = %u, "
+		     "total = %u\n", __FILE__, __LINE__, heap, log2_size,
+		     max_textures[ heap ].c[ log2_size ], total );
+	 }
+
+	 if ( (max_textures[ heap ].c[ log2_size ] >= texture_units)
+	      || (!all_textures_one_heap && (total >= texture_units)) ) {
+	    /* The number of mipmap levels is the log-base-2 of the
+	     * maximum texture size plus 1.  If the maximum texture size
+	     * is 1x1, the log-base-2 is 0 and 1 mipmap level (the base
+	     * level) is available.
+	     */
+
+	    return log2_size + 1;
+	 }
+      }
+   }
+
+   /* This should NEVER happen.  It should always be possible to have at
+    * *least* a 1x1 texture in memory!
+    */
+   assert( log2_size != 0 );
+   return 0;
+}
+
+#define SET_MAX(f,v) \
+    do { if ( max_sizes[v] != 0 ) { limits-> f = max_sizes[v]; } } while( 0 )
+
+#define SET_MAX_RECT(f,v) \
+    do { if ( max_sizes[v] != 0 ) { limits-> f = 1 << (max_sizes[v] - 1); } } while( 0 )
+
+
+/**
+ * Given the amount of texture memory, the number of texture units, and the
+ * maximum size of a texel, calculate the maximum texture size the driver can
+ * advertise.
+ * 
+ * \param heaps Texture heaps for this card
+ * \param nr_heap Number of texture heaps
+ * \param limits OpenGL contants.  MaxTextureUnits must be set.
+ * \param max_bytes_per_texel Maximum size of a single texel, in bytes
+ * \param max_2D_size \f$\log_2\f$ of the maximum 2D texture size (i.e.,
+ *     1024x1024 textures, this would be 10)
+ * \param max_3D_size \f$\log_2\f$ of the maximum 3D texture size (i.e.,
+ *     1024x1024x1024 textures, this would be 10)
+ * \param max_cube_size \f$\log_2\f$ of the maximum cube texture size (i.e.,
+ *     1024x1024 textures, this would be 10)
+ * \param max_rect_size \f$\log_2\f$ of the maximum texture rectangle size
+ *     (i.e., 1024x1024 textures, this would be 10).  This is a power-of-2
+ *     even though texture rectangles need not be a power-of-2.
+ * \param mipmaps_at_once Total number of mipmaps that can be used
+ *     at one time.  For most hardware this will be \f$\c max_size + 1\f$.
+ *     For hardware that does not support mipmapping, this will be 1.
+ * \param all_textures_one_heap True if the hardware requires that all
+ *     textures be in a single texture heap for multitexturing.
+ * \param allow_larger_textures 0 conservative, 1 calculate limits
+ *     so at least one worst-case texture can fit, 2 just use hw limits.
+ */
+
+void
+driCalculateMaxTextureLevels( driTexHeap * const * heaps,
+			      unsigned nr_heaps,
+			      struct gl_constants * limits,
+			      unsigned max_bytes_per_texel,
+			      unsigned max_2D_size,
+			      unsigned max_3D_size,
+			      unsigned max_cube_size,
+			      unsigned max_rect_size,
+			      unsigned mipmaps_at_once,
+			      int all_textures_one_heap,
+			      int allow_larger_textures )
+{
+   struct maps_per_heap  max_textures[8];
+   unsigned         i;
+   const unsigned   dimensions[4] = { 2, 3, 2, 2 };
+   const unsigned   faces[4]      = { 1, 1, 6, 1 };
+   unsigned         max_sizes[4];
+   unsigned         mipmaps[4];
+
+
+   max_sizes[0] = max_2D_size;
+   max_sizes[1] = max_3D_size;
+   max_sizes[2] = max_cube_size;
+   max_sizes[3] = max_rect_size;
+
+   mipmaps[0] = mipmaps_at_once;
+   mipmaps[1] = mipmaps_at_once;
+   mipmaps[2] = mipmaps_at_once;
+   mipmaps[3] = 1;
+
+
+   /* Calculate the maximum number of texture levels in two passes.  The
+    * first pass determines how many textures of each power-of-two size
+    * (including all mipmap levels for that size) can fit in each texture
+    * heap.  The second pass finds the largest texture size that allows
+    * a texture of that size to be bound to every texture unit.
+    */
+
+   for ( i = 0 ; i < 4 ; i++ ) {
+      if ( (allow_larger_textures != 2) && (max_sizes[ i ] != 0) ) {
+	 fill_in_maximums( heaps, nr_heaps, max_bytes_per_texel,
+			   max_sizes[ i ], mipmaps[ i ],
+			   dimensions[ i ], faces[ i ],
+			   max_textures );
+
+	 max_sizes[ i ] = get_max_size( nr_heaps,
+					allow_larger_textures == 1 ?
+					1 : limits->MaxTextureUnits,
+					max_sizes[ i ],
+					all_textures_one_heap,
+					max_textures );
+      }
+      else if (max_sizes[ i ] != 0) {
+	 max_sizes[ i ] += 1;
+      }
+   }
+
+   SET_MAX( MaxTextureLevels,        0 );
+   SET_MAX( Max3DTextureLevels,      1 );
+   SET_MAX( MaxCubeTextureLevels,    2 );
+   SET_MAX_RECT( MaxTextureRectSize, 3 );
+}
+
+
+
+
+/**
+ * Perform initial binding of default textures objects on a per unit, per
+ * texture target basis.
+ *
+ * \param ctx Current OpenGL context
+ * \param swapped List of swapped-out textures
+ * \param targets Bit-mask of value texture targets
+ */
+
+void driInitTextureObjects( struct gl_context *ctx, driTextureObject * swapped,
+			    GLuint targets )
+{
+   struct gl_texture_object *texObj;
+   GLuint tmp = ctx->Texture.CurrentUnit;
+   unsigned   i;
+
+
+   for ( i = 0 ; i < ctx->Const.MaxTextureUnits ; i++ ) {
+      ctx->Texture.CurrentUnit = i;
+
+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_1D) != 0 ) {
+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_1D_INDEX];
+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_1D, texObj );
+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
+      }
+
+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_2D) != 0 ) {
+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_2D_INDEX];
+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_2D, texObj );
+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
+      }
+
+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_3D) != 0 ) {
+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_3D_INDEX];
+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_3D, texObj );
+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
+      }
+
+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_CUBE) != 0 ) {
+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_CUBE_INDEX];
+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_CUBE_MAP_ARB, texObj );
+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
+      }
+
+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_RECT) != 0 ) {
+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_RECT_INDEX];
+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_RECTANGLE_NV, texObj );
+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
+      }
+   }
+
+   ctx->Texture.CurrentUnit = tmp;
+}
+
+
+
+
+/**
+ * Verify that the specified texture is in the specificed heap.
+ * 
+ * \param tex   Texture to be tested.
+ * \param heap  Texture memory heap to be tested.
+ * \return True if the texture is in the heap, false otherwise.
+ */
+
+static GLboolean
+check_in_heap( const driTextureObject * tex, const driTexHeap * heap )
+{
+#if 1
+   return tex->heap == heap;
+#else
+   driTextureObject * curr;
+
+   foreach( curr, & heap->texture_objects ) {
+      if ( curr == tex ) {
+	 break;
+      }
+   }
+
+   return curr == tex;
+#endif
+}
+
+
+
+/****************************************************************************/
+/**
+ * Validate the consistency of a set of texture heaps.
+ * Original version by Keith Whitwell in r200/r200_sanity.c.
+ */
+
+GLboolean
+driValidateTextureHeaps( driTexHeap * const * texture_heaps,
+			 unsigned nr_heaps, const driTextureObject * swapped )
+{
+   driTextureObject *t;
+   unsigned  i;
+
+   for ( i = 0 ; i < nr_heaps ; i++ ) {
+      int last_end = 0;
+      unsigned textures_in_heap = 0;
+      unsigned blocks_in_mempool = 0;
+      const driTexHeap * heap = texture_heaps[i];
+      const struct mem_block *p = heap->memory_heap;
+
+      /* Check each texture object has a MemBlock, and is linked into
+       * the correct heap.  
+       *
+       * Check the texobj base address corresponds to the MemBlock
+       * range.  Check the texobj size (recalculate?) fits within
+       * the MemBlock.
+       *
+       * Count the number of texobj's using this heap.
+       */
+
+      foreach ( t, &heap->texture_objects ) {
+	 if ( !check_in_heap( t, heap ) ) {
+	    fprintf( stderr, "%s memory block for texture object @ %p not "
+		     "found in heap #%d\n",
+		     __FUNCTION__, (void *)t, i );
+	    return GL_FALSE;
+	 }
+
+
+	 if ( t->totalSize > t->memBlock->size ) {
+	    fprintf( stderr, "%s: Memory block for texture object @ %p is "
+		     "only %u bytes, but %u are required\n",
+		     __FUNCTION__, (void *)t, t->totalSize, t->memBlock->size );
+	    return GL_FALSE;
+	 }
+
+	 textures_in_heap++;
+      }
+
+      /* Validate the contents of the heap:
+       *   - Ordering
+       *   - Overlaps
+       *   - Bounds
+       */
+
+      while ( p != NULL ) {
+	 if (p->reserved) {
+	    fprintf( stderr, "%s: Block (%08x,%x), is reserved?!\n",
+		     __FUNCTION__, p->ofs, p->size );
+	    return GL_FALSE;
+	 }
+
+	 if (p->ofs != last_end) {
+	    fprintf( stderr, "%s: blocks_in_mempool = %d, last_end = %d, p->ofs = %d\n",
+		     __FUNCTION__, blocks_in_mempool, last_end, p->ofs );
+	    return GL_FALSE;
+	 }
+
+	 if (!p->reserved && !p->free) {
+	    blocks_in_mempool++;
+	 }
+
+	 last_end = p->ofs + p->size;
+	 p = p->next;
+      }
+
+      if (textures_in_heap != blocks_in_mempool) {
+	 fprintf( stderr, "%s: Different number of textures objects (%u) and "
+		  "inuse memory blocks (%u)\n", 
+		  __FUNCTION__, textures_in_heap, blocks_in_mempool );
+	 return GL_FALSE;
+      }
+
+#if 0
+      fprintf( stderr, "%s: textures_in_heap = %u\n", 
+	       __FUNCTION__, textures_in_heap );
+#endif
+   }
+
+
+   /* Check swapped texobj's have zero memblocks
+    */
+   i = 0;
+   foreach ( t, swapped ) {
+      if ( t->memBlock != NULL ) {
+	 fprintf( stderr, "%s: Swapped texobj %p has non-NULL memblock %p\n",
+		  __FUNCTION__, (void *)t, (void *)t->memBlock );
+	 return GL_FALSE;
+      }
+      i++;
+   }
+
+#if 0
+   fprintf( stderr, "%s: swapped texture count = %u\n", __FUNCTION__, i );
+#endif
+
+   return GL_TRUE;
+}
+
+
+
+
+/****************************************************************************/
+/**
+ * Compute which mipmap levels that really need to be sent to the hardware.
+ * This depends on the base image size, GL_TEXTURE_MIN_LOD,
+ * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
+ */
+
+void
+driCalculateTextureFirstLastLevel( driTextureObject * t )
+{
+   struct gl_texture_object * const tObj = t->tObj;
+   const struct gl_texture_image * const baseImage =
+       tObj->Image[0][tObj->BaseLevel];
+
+   /* These must be signed values.  MinLod and MaxLod can be negative numbers,
+    * and having firstLevel and lastLevel as signed prevents the need for
+    * extra sign checks.
+    */
+   int   firstLevel;
+   int   lastLevel;
+
+   /* Yes, this looks overly complicated, but it's all needed.
+    */
+
+   switch (tObj->Target) {
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_3D:
+   case GL_TEXTURE_CUBE_MAP:
+      if (tObj->Sampler.MinFilter == GL_NEAREST ||
+          tObj->Sampler.MinFilter == GL_LINEAR) {
+         /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
+          */
+
+         firstLevel = lastLevel = tObj->BaseLevel;
+      }
+      else {
+	 firstLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MinLod + 0.5);
+	 firstLevel = MAX2(firstLevel, tObj->BaseLevel);
+	 firstLevel = MIN2(firstLevel, tObj->BaseLevel + baseImage->MaxLog2);
+	 lastLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MaxLod + 0.5);
+	 lastLevel = MAX2(lastLevel, t->tObj->BaseLevel);
+	 lastLevel = MIN2(lastLevel, t->tObj->BaseLevel + baseImage->MaxLog2);
+	 lastLevel = MIN2(lastLevel, t->tObj->MaxLevel);
+	 lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */
+      }
+      break;
+   case GL_TEXTURE_RECTANGLE_NV:
+   case GL_TEXTURE_4D_SGIS:
+      firstLevel = lastLevel = 0;
+      break;
+   default:
+      return;
+   }
+
+   /* save these values */
+   t->firstLevel = firstLevel;
+   t->lastLevel = lastLevel;
+}
+
+
+
+
+/**
+ * \name DRI texture formats.  These vars are initialized to either the
+ * big- or little-endian Mesa formats.
+ */
+/*@{*/
+gl_format _dri_texformat_rgba8888 = MESA_FORMAT_NONE;
+gl_format _dri_texformat_argb8888 = MESA_FORMAT_NONE;
+gl_format _dri_texformat_rgb565 = MESA_FORMAT_NONE;
+gl_format _dri_texformat_argb4444 = MESA_FORMAT_NONE;
+gl_format _dri_texformat_argb1555 = MESA_FORMAT_NONE;
+gl_format _dri_texformat_al88 = MESA_FORMAT_NONE;
+gl_format _dri_texformat_a8 = MESA_FORMAT_A8;
+gl_format _dri_texformat_i8 = MESA_FORMAT_I8;
+gl_format _dri_texformat_l8 = MESA_FORMAT_L8;
+/*@}*/
+
+
+/**
+ * Initialize _dri_texformat_* vars according to whether we're on
+ * a big or little endian system.
+ */
+void
+driInitTextureFormats(void)
+{
+   if (_mesa_little_endian()) {
+      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888;
+      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888;
+      _dri_texformat_rgb565	= MESA_FORMAT_RGB565;
+      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444;
+      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555;
+      _dri_texformat_al88	= MESA_FORMAT_AL88;
+   }
+   else {
+      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888_REV;
+      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888_REV;
+      _dri_texformat_rgb565	= MESA_FORMAT_RGB565_REV;
+      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444_REV;
+      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555_REV;
+      _dri_texformat_al88	= MESA_FORMAT_AL88_REV;
+   }
+}
diff --git a/mesalib/src/mesa/drivers/dri/swrast/swrast.c b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
index 63b3fe94c..13a13eade 100644
--- a/mesalib/src/mesa/drivers/dri/swrast/swrast.c
+++ b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
@@ -1,820 +1,820 @@
-/*

- * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com>

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DRI software rasterizer

- *

- * This is the mesa swrast module packaged into a DRI driver structure.

- *

- * The front-buffer is allocated by the loader. The loader provides read/write

- * callbacks for access to the front-buffer. The driver uses a scratch row for

- * front-buffer rendering to avoid repeated calls to the loader.

- *

- * The back-buffer is allocated by the driver and is private.

- */

-

-#ifdef _MSC_VER

-#define WIN32_LEAN_AND_MEAN 1

-#include <windows.h>

-#endif

-

-#include "main/context.h"

-#include "main/extensions.h"

-#include "main/formats.h"

-#include "main/framebuffer.h"

-#include "main/imports.h"

-#include "main/renderbuffer.h"

-#include "swrast/swrast.h"

-#include "swrast_setup/swrast_setup.h"

-#include "tnl/tnl.h"

-#include "tnl/t_context.h"

-#include "tnl/t_pipeline.h"

-#include "vbo/vbo.h"

-#include "drivers/common/driverfuncs.h"

-#include "drivers/common/meta.h"

-#include "utils.h"

-

-#include "main/teximage.h"

-#include "main/texformat.h"

-#include "main/texstate.h"

-

-#include "swrast_priv.h"

-

-

-/**

- * Screen and config-related functions

- */

-

-static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,

-				GLint texture_format, __DRIdrawable *dPriv)

-{

-    struct dri_context *dri_ctx;

-    int x, y, w, h;

-    __DRIscreen *sPriv = dPriv->driScreenPriv;

-    struct gl_texture_unit *texUnit;

-    struct gl_texture_object *texObj;

-    struct gl_texture_image *texImage;

-    uint32_t internalFormat;

-    gl_format texFormat;

-

-    dri_ctx = pDRICtx->driverPrivate;

-

-    internalFormat = (texture_format == __DRI_TEXTURE_FORMAT_RGB ? 3 : 4);

-

-    texUnit = _mesa_get_current_tex_unit(&dri_ctx->Base);

-    texObj = _mesa_select_tex_object(&dri_ctx->Base, texUnit, target);

-    texImage = _mesa_get_tex_image(&dri_ctx->Base, texObj, target, 0);

-

-    _mesa_lock_texture(&dri_ctx->Base, texObj);

-

-    sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate);

-

-    if (texture_format == __DRI_TEXTURE_FORMAT_RGB)

-	texFormat = MESA_FORMAT_XRGB8888;

-    else

-	texFormat = MESA_FORMAT_ARGB8888;

-

-    _mesa_init_teximage_fields(&dri_ctx->Base, target, texImage,

-			       w, h, 1, 0, internalFormat, texFormat);

-

-    sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)texImage->Data,

-				   dPriv->loaderPrivate);

-

-    _mesa_unlock_texture(&dri_ctx->Base, texObj);

-}

-

-static void swrastSetTexBuffer(__DRIcontext *pDRICtx, GLint target,

-			       __DRIdrawable *dPriv)

-{

-    swrastSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);

-}

-

-static const __DRItexBufferExtension swrastTexBufferExtension = {

-    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },

-    swrastSetTexBuffer,

-    swrastSetTexBuffer2,

-};

-

-static const __DRIextension *dri_screen_extensions[] = {

-    &swrastTexBufferExtension.base,

-    NULL

-};

-

-static __DRIconfig **

-swrastFillInModes(__DRIscreen *psp,

-		  unsigned pixel_bits, unsigned depth_bits,

-		  unsigned stencil_bits, GLboolean have_back_buffer)

-{

-    __DRIconfig **configs;

-    unsigned depth_buffer_factor;

-    unsigned back_buffer_factor;

-    GLenum fb_format;

-    GLenum fb_type;

-

-    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't

-     * support pageflipping at all.

-     */

-    static const GLenum back_buffer_modes[] = {

-	GLX_NONE, GLX_SWAP_UNDEFINED_OML

-    };

-

-    uint8_t depth_bits_array[4];

-    uint8_t stencil_bits_array[4];

-    uint8_t msaa_samples_array[1];

-

-    (void) psp;

-    (void) have_back_buffer;

-

-    depth_bits_array[0] = 0;

-    depth_bits_array[1] = 0;

-    depth_bits_array[2] = depth_bits;

-    depth_bits_array[3] = depth_bits;

-

-    /* Just like with the accumulation buffer, always provide some modes

-     * with a stencil buffer.

-     */

-    stencil_bits_array[0] = 0;

-    stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;

-    stencil_bits_array[2] = 0;

-    stencil_bits_array[3] = (stencil_bits == 0) ? 8 : stencil_bits;

-

-    msaa_samples_array[0] = 0;

-

-    depth_buffer_factor = 4;

-    back_buffer_factor = 2;

-

-    switch (pixel_bits) {

-    case 8:

-	fb_format = GL_RGB;

-	fb_type = GL_UNSIGNED_BYTE_2_3_3_REV;

-	break;

-    case 16:

-	fb_format = GL_RGB;

-	fb_type = GL_UNSIGNED_SHORT_5_6_5;

-	break;

-    case 24:

-	fb_format = GL_BGR;

-	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;

-	break;

-    case 32:

-	fb_format = GL_BGRA;

-	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;

-	break;

-    default:

-	fprintf(stderr, "[%s:%u] bad depth %d\n", __FUNCTION__, __LINE__,

-		pixel_bits);

-	return NULL;

-    }

-

-    configs = driCreateConfigs(fb_format, fb_type,

-			       depth_bits_array, stencil_bits_array,

-			       depth_buffer_factor, back_buffer_modes,

-			       back_buffer_factor, msaa_samples_array, 1,

-			       GL_TRUE);

-    if (configs == NULL) {

-	fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __FUNCTION__,

-		__LINE__);

-	return NULL;

-    }

-

-    return configs;

-}

-

-static const __DRIconfig **

-dri_init_screen(__DRIscreen * psp)

-{

-    __DRIconfig **configs8, **configs16, **configs24, **configs32;

-

-    TRACE;

-

-    psp->extensions = dri_screen_extensions;

-

-    configs8  = swrastFillInModes(psp,  8,  8, 0, 1);

-    configs16 = swrastFillInModes(psp, 16, 16, 0, 1);

-    configs24 = swrastFillInModes(psp, 24, 24, 8, 1);

-    configs32 = swrastFillInModes(psp, 32, 24, 8, 1);

-

-    configs16 = driConcatConfigs(configs8, configs16);

-    configs24 = driConcatConfigs(configs16, configs24);

-    configs32 = driConcatConfigs(configs24, configs32);

-

-    return (const __DRIconfig **)configs32;

-}

-

-static void

-dri_destroy_screen(__DRIscreen * sPriv)

-{

-    TRACE;

-    (void) sPriv;

-}

-

-

-/**

- * Framebuffer and renderbuffer-related functions.

- */

-

-static GLuint

-choose_pixel_format(const struct gl_config *v)

-{

-    int depth = v->rgbBits;

-

-    if (depth == 32

-	&& v->redMask   == 0xff0000

-	&& v->greenMask == 0x00ff00

-	&& v->blueMask  == 0x0000ff)

-	return PF_A8R8G8B8;

-    else if (depth == 24

-	     && v->redMask   == 0xff0000

-	     && v->greenMask == 0x00ff00

-	     && v->blueMask  == 0x0000ff)

-	return PF_X8R8G8B8;

-    else if (depth == 16

-	     && v->redMask   == 0xf800

-	     && v->greenMask == 0x07e0

-	     && v->blueMask  == 0x001f)

-	return PF_R5G6B5;

-    else if (depth == 8

-	     && v->redMask   == 0x07

-	     && v->greenMask == 0x38

-	     && v->blueMask  == 0xc0)

-	return PF_R3G3B2;

-

-    _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ );

-    return 0;

-}

-

-static void

-swrast_delete_renderbuffer(struct gl_renderbuffer *rb)

-{

-    TRACE;

-

-    free(rb->Data);

-    free(rb);

-}

-

-/* see bytes_per_line in libGL */

-static INLINE int

-bytes_per_line(unsigned pitch_bits, unsigned mul)

-{

-   unsigned mask = mul - 1;

-

-   return ((pitch_bits + mask) & ~mask) / 8;

-}

-

-static GLboolean

-swrast_alloc_front_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,

-			   GLenum internalFormat, GLuint width, GLuint height)

-{

-    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);

-

-    TRACE;

-

-    (void) ctx;

-    (void) internalFormat;

-

-    rb->Data = NULL;

-    rb->Width = width;

-    rb->Height = height;

-

-    xrb->pitch = bytes_per_line(width * xrb->bpp, 32);

-

-    return GL_TRUE;

-}

-

-static GLboolean

-swrast_alloc_back_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,

-			  GLenum internalFormat, GLuint width, GLuint height)

-{

-    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);

-

-    TRACE;

-

-    free(rb->Data);

-

-    swrast_alloc_front_storage(ctx, rb, internalFormat, width, height);

-

-    rb->Data = malloc(height * xrb->pitch);

-

-    return GL_TRUE;

-}

-

-static struct swrast_renderbuffer *

-swrast_new_renderbuffer(const struct gl_config *visual, GLboolean front)

-{

-    struct swrast_renderbuffer *xrb = calloc(1, sizeof *xrb);

-    GLuint pixel_format;

-

-    TRACE;

-

-    if (!xrb)

-	return NULL;

-

-    _mesa_init_renderbuffer(&xrb->Base, 0);

-

-    pixel_format = choose_pixel_format(visual);

-

-    xrb->Base.Delete = swrast_delete_renderbuffer;

-    if (front) {

-	xrb->Base.AllocStorage = swrast_alloc_front_storage;

-	swrast_set_span_funcs_front(xrb, pixel_format);

-    }

-    else {

-	xrb->Base.AllocStorage = swrast_alloc_back_storage;

-	swrast_set_span_funcs_back(xrb, pixel_format);

-    }

-

-    switch (pixel_format) {

-    case PF_A8R8G8B8:

-	xrb->Base.Format = MESA_FORMAT_ARGB8888;

-	xrb->Base.InternalFormat = GL_RGBA;

-	xrb->Base._BaseFormat = GL_RGBA;

-	xrb->Base.DataType = GL_UNSIGNED_BYTE;

-	xrb->bpp = 32;

-	break;

-    case PF_X8R8G8B8:

-	xrb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX */

-	xrb->Base.InternalFormat = GL_RGB;

-	xrb->Base._BaseFormat = GL_RGB;

-	xrb->Base.DataType = GL_UNSIGNED_BYTE;

-	xrb->bpp = 32;

-	break;

-    case PF_R5G6B5:

-	xrb->Base.Format = MESA_FORMAT_RGB565;

-	xrb->Base.InternalFormat = GL_RGB;

-	xrb->Base._BaseFormat = GL_RGB;

-	xrb->Base.DataType = GL_UNSIGNED_BYTE;

-	xrb->bpp = 16;

-	break;

-    case PF_R3G3B2:

-	xrb->Base.Format = MESA_FORMAT_RGB332;

-	xrb->Base.InternalFormat = GL_RGB;

-	xrb->Base._BaseFormat = GL_RGB;

-	xrb->Base.DataType = GL_UNSIGNED_BYTE;

-	xrb->bpp = 8;

-	break;

-    default:

-	return NULL;

-    }

-

-    return xrb;

-}

-

-static GLboolean

-dri_create_buffer(__DRIscreen * sPriv,

-		  __DRIdrawable * dPriv,

-		  const struct gl_config * visual, GLboolean isPixmap)

-{

-    struct dri_drawable *drawable = NULL;

-    struct gl_framebuffer *fb;

-    struct swrast_renderbuffer *frontrb, *backrb;

-

-    TRACE;

-

-    (void) sPriv;

-    (void) isPixmap;

-

-    drawable = CALLOC_STRUCT(dri_drawable);

-    if (drawable == NULL)

-	goto drawable_fail;

-

-    dPriv->driverPrivate = drawable;

-    drawable->dPriv = dPriv;

-

-    drawable->row = malloc(MAX_WIDTH * 4);

-    if (drawable->row == NULL)

-	goto drawable_fail;

-

-    fb = &drawable->Base;

-

-    /* basic framebuffer setup */

-    _mesa_initialize_window_framebuffer(fb, visual);

-

-    /* add front renderbuffer */

-    frontrb = swrast_new_renderbuffer(visual, GL_TRUE);

-    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontrb->Base);

-

-    /* add back renderbuffer */

-    if (visual->doubleBufferMode) {

-	backrb = swrast_new_renderbuffer(visual, GL_FALSE);

-	_mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backrb->Base);

-    }

-

-    /* add software renderbuffers */

-    _mesa_add_soft_renderbuffers(fb,

-				 GL_FALSE, /* color */

-				 visual->haveDepthBuffer,

-				 visual->haveStencilBuffer,

-				 visual->haveAccumBuffer,

-				 GL_FALSE, /* alpha */

-				 GL_FALSE /* aux bufs */);

-

-    return GL_TRUE;

-

-drawable_fail:

-

-    if (drawable)

-	free(drawable->row);

-

-    FREE(drawable);

-

-    return GL_FALSE;

-}

-

-static void

-dri_destroy_buffer(__DRIdrawable * dPriv)

-{

-    TRACE;

-

-    if (dPriv) {

-	struct dri_drawable *drawable = dri_drawable(dPriv);

-	struct gl_framebuffer *fb;

-

-	free(drawable->row);

-

-	fb = &drawable->Base;

-

-	fb->DeletePending = GL_TRUE;

-	_mesa_reference_framebuffer(&fb, NULL);

-    }

-}

-

-static void

-dri_swap_buffers(__DRIdrawable * dPriv)

-{

-    __DRIscreen *sPriv = dPriv->driScreenPriv;

-

-    GET_CURRENT_CONTEXT(ctx);

-

-    struct dri_drawable *drawable = dri_drawable(dPriv);

-    struct gl_framebuffer *fb;

-    struct swrast_renderbuffer *frontrb, *backrb;

-

-    TRACE;

-

-    fb = &drawable->Base;

-

-    frontrb =

-	swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);

-    backrb =

-	swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);

-

-    /* check for signle-buffered */

-    if (backrb == NULL)

-	return;

-

-    /* check if swapping currently bound buffer */

-    if (ctx && ctx->DrawBuffer == fb) {

-	/* flush pending rendering */

-	_mesa_notifySwapBuffers(ctx);

-    }

-

-    sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,

-				   0, 0,

-				   frontrb->Base.Width,

-				   frontrb->Base.Height,

-				   backrb->Base.Data,

-				   dPriv->loaderPrivate);

-}

-

-

-/**

- * General device driver functions.

- */

-

-static void

-get_window_size( struct gl_framebuffer *fb, GLsizei *w, GLsizei *h )

-{

-    __DRIdrawable *dPriv = swrast_drawable(fb)->dPriv;

-    __DRIscreen *sPriv = dPriv->driScreenPriv;

-    int x, y;

-

-    sPriv->swrast_loader->getDrawableInfo(dPriv,

-					  &x, &y, w, h,

-					  dPriv->loaderPrivate);

-}

-

-static void

-swrast_check_and_update_window_size( struct gl_context *ctx, struct gl_framebuffer *fb )

-{

-    GLsizei width, height;

-

-    get_window_size(fb, &width, &height);

-    if (fb->Width != width || fb->Height != height) {

-	_mesa_resize_framebuffer(ctx, fb, width, height);

-    }

-}

-

-static const GLubyte *

-get_string(struct gl_context *ctx, GLenum pname)

-{

-    (void) ctx;

-    switch (pname) {

-	case GL_VENDOR:

-	    return (const GLubyte *) "Mesa Project";

-	case GL_RENDERER:

-	    return (const GLubyte *) "Software Rasterizer";

-	default:

-	    return NULL;

-    }

-}

-

-static void

-update_state( struct gl_context *ctx, GLuint new_state )

-{

-    /* not much to do here - pass it on */

-    _swrast_InvalidateState( ctx, new_state );

-    _swsetup_InvalidateState( ctx, new_state );

-    _vbo_InvalidateState( ctx, new_state );

-    _tnl_InvalidateState( ctx, new_state );

-}

-

-static void

-viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)

-{

-    struct gl_framebuffer *draw = ctx->WinSysDrawBuffer;

-    struct gl_framebuffer *read = ctx->WinSysReadBuffer;

-

-    (void) x;

-    (void) y;

-    (void) w;

-    (void) h;

-    swrast_check_and_update_window_size(ctx, draw);

-    swrast_check_and_update_window_size(ctx, read);

-}

-

-static gl_format swrastChooseTextureFormat(struct gl_context * ctx,

-					   GLint internalFormat,

-					   GLenum format,

-					   GLenum type)

-{

-    if (internalFormat == GL_RGB)

-	return MESA_FORMAT_XRGB8888;

-    return _mesa_choose_tex_format(ctx, internalFormat, format, type);

-}

-

-static void

-swrast_init_driver_functions(struct dd_function_table *driver)

-{

-    driver->GetString = get_string;

-    driver->UpdateState = update_state;

-    driver->GetBufferSize = NULL;

-    driver->Viewport = viewport;

-    driver->ChooseTextureFormat = swrastChooseTextureFormat;

-}

-

-static const char *es2_extensions[] = {

-   /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */

-   "GL_ARB_draw_buffers",

-   "GL_ARB_multisample",

-   "GL_ARB_texture_compression",

-   "GL_ARB_transpose_matrix",

-   "GL_ARB_vertex_buffer_object",

-   "GL_ARB_window_pos",

-   "GL_EXT_blend_func_separate",

-   "GL_EXT_compiled_vertex_array",

-   "GL_EXT_framebuffer_blit",

-   "GL_EXT_multi_draw_arrays",

-   "GL_EXT_polygon_offset",

-   "GL_EXT_texture_object",

-   "GL_EXT_vertex_array",

-   "GL_IBM_multimode_draw_arrays",

-   "GL_MESA_window_pos",

-   "GL_NV_vertex_program",

-

-   /* Required by GLES2 */

-   "GL_ARB_fragment_program",

-   "GL_ARB_fragment_shader",

-   "GL_ARB_multitexture",

-   "GL_ARB_shader_objects",

-   "GL_ARB_texture_cube_map",

-   "GL_ARB_texture_mirrored_repeat",

-   "GL_ARB_texture_non_power_of_two",

-   "GL_ARB_vertex_shader",

-   "GL_EXT_blend_color",

-   "GL_EXT_blend_equation_separate",

-   "GL_EXT_blend_minmax",

-   "GL_EXT_blend_subtract",

-   "GL_EXT_stencil_wrap",

-

-   /* Optional GLES2 */

-   "GL_ARB_framebuffer_object",

-   "GL_EXT_texture_filter_anisotropic",

-   "GL_ARB_depth_texture",

-   "GL_EXT_packed_depth_stencil",

-   "GL_EXT_framebuffer_object",

-   NULL,

-};

-

-static void

-InitExtensionsES2(struct gl_context *ctx)

-{

-   int i;

-

-   for (i = 0; es2_extensions[i]; i++)

-      _mesa_enable_extension(ctx, es2_extensions[i]);

-}

-

-/**

- * Context-related functions.

- */

-

-static GLboolean

-dri_create_context(gl_api api,

-		   const struct gl_config * visual,

-		   __DRIcontext * cPriv, void *sharedContextPrivate)

-{

-    struct dri_context *ctx = NULL;

-    struct dri_context *share = (struct dri_context *)sharedContextPrivate;

-    struct gl_context *mesaCtx = NULL;

-    struct gl_context *sharedCtx = NULL;

-    struct dd_function_table functions;

-

-    TRACE;

-

-    ctx = CALLOC_STRUCT(dri_context);

-    if (ctx == NULL)

-	goto context_fail;

-

-    cPriv->driverPrivate = ctx;

-    ctx->cPriv = cPriv;

-

-    /* build table of device driver functions */

-    _mesa_init_driver_functions(&functions);

-    swrast_init_driver_functions(&functions);

-

-    if (share) {

-	sharedCtx = &share->Base;

-    }

-

-    mesaCtx = &ctx->Base;

-

-    /* basic context setup */

-    if (!_mesa_initialize_context(mesaCtx, api, visual, sharedCtx, &functions, (void *) cPriv)) {

-	goto context_fail;

-    }

-

-    /* do bounds checking to prevent segfaults and server crashes! */

-    mesaCtx->Const.CheckArrayBounds = GL_TRUE;

-

-    /* create module contexts */

-    _swrast_CreateContext( mesaCtx );

-    _vbo_CreateContext( mesaCtx );

-    _tnl_CreateContext( mesaCtx );

-    _swsetup_CreateContext( mesaCtx );

-    _swsetup_Wakeup( mesaCtx );

-

-    /* use default TCL pipeline */

-    {

-       TNLcontext *tnl = TNL_CONTEXT(mesaCtx);

-       tnl->Driver.RunPipeline = _tnl_run_pipeline;

-    }

-

-    _mesa_meta_init(mesaCtx);

-    _mesa_enable_sw_extensions(mesaCtx);

-

-    switch (api) {

-    case API_OPENGL:

-        _mesa_enable_1_3_extensions(mesaCtx);

-        _mesa_enable_1_4_extensions(mesaCtx);

-        _mesa_enable_1_5_extensions(mesaCtx);

-        _mesa_enable_2_0_extensions(mesaCtx);

-        _mesa_enable_2_1_extensions(mesaCtx);

-        break;

-    case API_OPENGLES:

-        _mesa_enable_1_3_extensions(mesaCtx);

-        _mesa_enable_1_4_extensions(mesaCtx);

-        _mesa_enable_1_5_extensions(mesaCtx);

-

-        break;

-    case API_OPENGLES2:

-        InitExtensionsES2( mesaCtx);

-        break;

-    }

-

-    return GL_TRUE;

-

-context_fail:

-

-    FREE(ctx);

-

-    return GL_FALSE;

-}

-

-static void

-dri_destroy_context(__DRIcontext * cPriv)

-{

-    TRACE;

-

-    if (cPriv) {

-	struct dri_context *ctx = dri_context(cPriv);

-	struct gl_context *mesaCtx;

-

-	mesaCtx = &ctx->Base;

-

-        _mesa_meta_free(mesaCtx);

-	_swsetup_DestroyContext( mesaCtx );

-	_swrast_DestroyContext( mesaCtx );

-	_tnl_DestroyContext( mesaCtx );

-	_vbo_DestroyContext( mesaCtx );

-	_mesa_destroy_context( mesaCtx );

-    }

-}

-

-static GLboolean

-dri_make_current(__DRIcontext * cPriv,

-		 __DRIdrawable * driDrawPriv,

-		 __DRIdrawable * driReadPriv)

-{

-    struct gl_context *mesaCtx;

-    struct gl_framebuffer *mesaDraw;

-    struct gl_framebuffer *mesaRead;

-    TRACE;

-

-    if (cPriv) {

-	struct dri_context *ctx = dri_context(cPriv);

-	struct dri_drawable *draw;

-	struct dri_drawable *read;

-

-	if (!driDrawPriv || !driReadPriv)

-	    return GL_FALSE;

-

-	draw = dri_drawable(driDrawPriv);

-	read = dri_drawable(driReadPriv);

-	mesaCtx = &ctx->Base;

-	mesaDraw = &draw->Base;

-	mesaRead = &read->Base;

-

-	/* check for same context and buffer */

-	if (mesaCtx == _mesa_get_current_context()

-	    && mesaCtx->DrawBuffer == mesaDraw

-	    && mesaCtx->ReadBuffer == mesaRead) {

-	    return GL_TRUE;

-	}

-

-	_glapi_check_multithread();

-

-	swrast_check_and_update_window_size(mesaCtx, mesaDraw);

-	if (mesaRead != mesaDraw)

-	    swrast_check_and_update_window_size(mesaCtx, mesaRead);

-

-	_mesa_make_current( mesaCtx,

-			    mesaDraw,

-			    mesaRead );

-    }

-    else {

-	/* unbind */

-	_mesa_make_current( NULL, NULL, NULL );

-    }

-

-    return GL_TRUE;

-}

-

-static GLboolean

-dri_unbind_context(__DRIcontext * cPriv)

-{

-    TRACE;

-    (void) cPriv;

-

-    /* Unset current context and dispath table */

-    _mesa_make_current(NULL, NULL, NULL);

-

-    return GL_TRUE;

-}

-

-

-const struct __DriverAPIRec driDriverAPI = {

-    /*.InitScreen = */dri_init_screen,

-    /*.DestroyScreen = */dri_destroy_screen,

-    /*.CreateContext = */dri_create_context,

-    /*.DestroyContext = */dri_destroy_context,

-    /*.CreateBuffer = */dri_create_buffer,

-    /*.DestroyBuffer = */dri_destroy_buffer,

-    /*.SwapBuffers = */dri_swap_buffers,

-    /*.MakeCurrent = */dri_make_current,

-    /*.UnbindContext = */dri_unbind_context,

-};

-

-/* This is the table of extensions that the loader will dlsym() for. */

-PUBLIC const __DRIextension *__driDriverExtensions[] = {

-    &driCoreExtension.base,

-    &driSWRastExtension.base,

-    NULL

-};

+/*
+ * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DRI software rasterizer
+ *
+ * This is the mesa swrast module packaged into a DRI driver structure.
+ *
+ * The front-buffer is allocated by the loader. The loader provides read/write
+ * callbacks for access to the front-buffer. The driver uses a scratch row for
+ * front-buffer rendering to avoid repeated calls to the loader.
+ *
+ * The back-buffer is allocated by the driver and is private.
+ */
+
+#ifdef _MSC_VER
+#define WIN32_LEAN_AND_MEAN 1
+#include <windows.h>
+#endif
+
+#include "main/context.h"
+#include "main/extensions.h"
+#include "main/formats.h"
+#include "main/framebuffer.h"
+#include "main/imports.h"
+#include "main/renderbuffer.h"
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "tnl/tnl.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+#include "vbo/vbo.h"
+#include "drivers/common/driverfuncs.h"
+#include "drivers/common/meta.h"
+#include "utils.h"
+
+#include "main/teximage.h"
+#include "main/texformat.h"
+#include "main/texstate.h"
+
+#include "swrast_priv.h"
+
+
+/**
+ * Screen and config-related functions
+ */
+
+static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
+				GLint texture_format, __DRIdrawable *dPriv)
+{
+    struct dri_context *dri_ctx;
+    int x, y, w, h;
+    __DRIscreen *sPriv = dPriv->driScreenPriv;
+    struct gl_texture_unit *texUnit;
+    struct gl_texture_object *texObj;
+    struct gl_texture_image *texImage;
+    uint32_t internalFormat;
+    gl_format texFormat;
+
+    dri_ctx = pDRICtx->driverPrivate;
+
+    internalFormat = (texture_format == __DRI_TEXTURE_FORMAT_RGB ? 3 : 4);
+
+    texUnit = _mesa_get_current_tex_unit(&dri_ctx->Base);
+    texObj = _mesa_select_tex_object(&dri_ctx->Base, texUnit, target);
+    texImage = _mesa_get_tex_image(&dri_ctx->Base, texObj, target, 0);
+
+    _mesa_lock_texture(&dri_ctx->Base, texObj);
+
+    sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate);
+
+    if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
+	texFormat = MESA_FORMAT_XRGB8888;
+    else
+	texFormat = MESA_FORMAT_ARGB8888;
+
+    _mesa_init_teximage_fields(&dri_ctx->Base, target, texImage,
+			       w, h, 1, 0, internalFormat, texFormat);
+
+    sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)texImage->Data,
+				   dPriv->loaderPrivate);
+
+    _mesa_unlock_texture(&dri_ctx->Base, texObj);
+}
+
+static void swrastSetTexBuffer(__DRIcontext *pDRICtx, GLint target,
+			       __DRIdrawable *dPriv)
+{
+    swrastSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
+}
+
+static const __DRItexBufferExtension swrastTexBufferExtension = {
+    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
+    swrastSetTexBuffer,
+    swrastSetTexBuffer2,
+};
+
+static const __DRIextension *dri_screen_extensions[] = {
+    &swrastTexBufferExtension.base,
+    NULL
+};
+
+static __DRIconfig **
+swrastFillInModes(__DRIscreen *psp,
+		  unsigned pixel_bits, unsigned depth_bits,
+		  unsigned stencil_bits, GLboolean have_back_buffer)
+{
+    __DRIconfig **configs;
+    unsigned depth_buffer_factor;
+    unsigned back_buffer_factor;
+    GLenum fb_format;
+    GLenum fb_type;
+
+    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
+     * support pageflipping at all.
+     */
+    static const GLenum back_buffer_modes[] = {
+	GLX_NONE, GLX_SWAP_UNDEFINED_OML
+    };
+
+    uint8_t depth_bits_array[4];
+    uint8_t stencil_bits_array[4];
+    uint8_t msaa_samples_array[1];
+
+    (void) psp;
+    (void) have_back_buffer;
+
+    depth_bits_array[0] = 0;
+    depth_bits_array[1] = 0;
+    depth_bits_array[2] = depth_bits;
+    depth_bits_array[3] = depth_bits;
+
+    /* Just like with the accumulation buffer, always provide some modes
+     * with a stencil buffer.
+     */
+    stencil_bits_array[0] = 0;
+    stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
+    stencil_bits_array[2] = 0;
+    stencil_bits_array[3] = (stencil_bits == 0) ? 8 : stencil_bits;
+
+    msaa_samples_array[0] = 0;
+
+    depth_buffer_factor = 4;
+    back_buffer_factor = 2;
+
+    switch (pixel_bits) {
+    case 8:
+	fb_format = GL_RGB;
+	fb_type = GL_UNSIGNED_BYTE_2_3_3_REV;
+	break;
+    case 16:
+	fb_format = GL_RGB;
+	fb_type = GL_UNSIGNED_SHORT_5_6_5;
+	break;
+    case 24:
+	fb_format = GL_BGR;
+	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	break;
+    case 32:
+	fb_format = GL_BGRA;
+	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	break;
+    default:
+	fprintf(stderr, "[%s:%u] bad depth %d\n", __FUNCTION__, __LINE__,
+		pixel_bits);
+	return NULL;
+    }
+
+    configs = driCreateConfigs(fb_format, fb_type,
+			       depth_bits_array, stencil_bits_array,
+			       depth_buffer_factor, back_buffer_modes,
+			       back_buffer_factor, msaa_samples_array, 1,
+			       GL_TRUE);
+    if (configs == NULL) {
+	fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __FUNCTION__,
+		__LINE__);
+	return NULL;
+    }
+
+    return configs;
+}
+
+static const __DRIconfig **
+dri_init_screen(__DRIscreen * psp)
+{
+    __DRIconfig **configs8, **configs16, **configs24, **configs32;
+
+    TRACE;
+
+    psp->extensions = dri_screen_extensions;
+
+    configs8  = swrastFillInModes(psp,  8,  8, 0, 1);
+    configs16 = swrastFillInModes(psp, 16, 16, 0, 1);
+    configs24 = swrastFillInModes(psp, 24, 24, 8, 1);
+    configs32 = swrastFillInModes(psp, 32, 24, 8, 1);
+
+    configs16 = driConcatConfigs(configs8, configs16);
+    configs24 = driConcatConfigs(configs16, configs24);
+    configs32 = driConcatConfigs(configs24, configs32);
+
+    return (const __DRIconfig **)configs32;
+}
+
+static void
+dri_destroy_screen(__DRIscreen * sPriv)
+{
+    TRACE;
+    (void) sPriv;
+}
+
+
+/**
+ * Framebuffer and renderbuffer-related functions.
+ */
+
+static GLuint
+choose_pixel_format(const struct gl_config *v)
+{
+    int depth = v->rgbBits;
+
+    if (depth == 32
+	&& v->redMask   == 0xff0000
+	&& v->greenMask == 0x00ff00
+	&& v->blueMask  == 0x0000ff)
+	return PF_A8R8G8B8;
+    else if (depth == 24
+	     && v->redMask   == 0xff0000
+	     && v->greenMask == 0x00ff00
+	     && v->blueMask  == 0x0000ff)
+	return PF_X8R8G8B8;
+    else if (depth == 16
+	     && v->redMask   == 0xf800
+	     && v->greenMask == 0x07e0
+	     && v->blueMask  == 0x001f)
+	return PF_R5G6B5;
+    else if (depth == 8
+	     && v->redMask   == 0x07
+	     && v->greenMask == 0x38
+	     && v->blueMask  == 0xc0)
+	return PF_R3G3B2;
+
+    _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ );
+    return 0;
+}
+
+static void
+swrast_delete_renderbuffer(struct gl_renderbuffer *rb)
+{
+    TRACE;
+
+    free(rb->Data);
+    free(rb);
+}
+
+/* see bytes_per_line in libGL */
+static INLINE int
+bytes_per_line(unsigned pitch_bits, unsigned mul)
+{
+   unsigned mask = mul - 1;
+
+   return ((pitch_bits + mask) & ~mask) / 8;
+}
+
+static GLboolean
+swrast_alloc_front_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
+			   GLenum internalFormat, GLuint width, GLuint height)
+{
+    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
+
+    TRACE;
+
+    (void) ctx;
+    (void) internalFormat;
+
+    rb->Data = NULL;
+    rb->Width = width;
+    rb->Height = height;
+
+    xrb->pitch = bytes_per_line(width * xrb->bpp, 32);
+
+    return GL_TRUE;
+}
+
+static GLboolean
+swrast_alloc_back_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
+			  GLenum internalFormat, GLuint width, GLuint height)
+{
+    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
+
+    TRACE;
+
+    free(rb->Data);
+
+    swrast_alloc_front_storage(ctx, rb, internalFormat, width, height);
+
+    rb->Data = malloc(height * xrb->pitch);
+
+    return GL_TRUE;
+}
+
+static struct swrast_renderbuffer *
+swrast_new_renderbuffer(const struct gl_config *visual, GLboolean front)
+{
+    struct swrast_renderbuffer *xrb = calloc(1, sizeof *xrb);
+    GLuint pixel_format;
+
+    TRACE;
+
+    if (!xrb)
+	return NULL;
+
+    _mesa_init_renderbuffer(&xrb->Base, 0);
+
+    pixel_format = choose_pixel_format(visual);
+
+    xrb->Base.Delete = swrast_delete_renderbuffer;
+    if (front) {
+	xrb->Base.AllocStorage = swrast_alloc_front_storage;
+	swrast_set_span_funcs_front(xrb, pixel_format);
+    }
+    else {
+	xrb->Base.AllocStorage = swrast_alloc_back_storage;
+	swrast_set_span_funcs_back(xrb, pixel_format);
+    }
+
+    switch (pixel_format) {
+    case PF_A8R8G8B8:
+	xrb->Base.Format = MESA_FORMAT_ARGB8888;
+	xrb->Base.InternalFormat = GL_RGBA;
+	xrb->Base._BaseFormat = GL_RGBA;
+	xrb->Base.DataType = GL_UNSIGNED_BYTE;
+	xrb->bpp = 32;
+	break;
+    case PF_X8R8G8B8:
+	xrb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX */
+	xrb->Base.InternalFormat = GL_RGB;
+	xrb->Base._BaseFormat = GL_RGB;
+	xrb->Base.DataType = GL_UNSIGNED_BYTE;
+	xrb->bpp = 32;
+	break;
+    case PF_R5G6B5:
+	xrb->Base.Format = MESA_FORMAT_RGB565;
+	xrb->Base.InternalFormat = GL_RGB;
+	xrb->Base._BaseFormat = GL_RGB;
+	xrb->Base.DataType = GL_UNSIGNED_BYTE;
+	xrb->bpp = 16;
+	break;
+    case PF_R3G3B2:
+	xrb->Base.Format = MESA_FORMAT_RGB332;
+	xrb->Base.InternalFormat = GL_RGB;
+	xrb->Base._BaseFormat = GL_RGB;
+	xrb->Base.DataType = GL_UNSIGNED_BYTE;
+	xrb->bpp = 8;
+	break;
+    default:
+	return NULL;
+    }
+
+    return xrb;
+}
+
+static GLboolean
+dri_create_buffer(__DRIscreen * sPriv,
+		  __DRIdrawable * dPriv,
+		  const struct gl_config * visual, GLboolean isPixmap)
+{
+    struct dri_drawable *drawable = NULL;
+    struct gl_framebuffer *fb;
+    struct swrast_renderbuffer *frontrb, *backrb;
+
+    TRACE;
+
+    (void) sPriv;
+    (void) isPixmap;
+
+    drawable = CALLOC_STRUCT(dri_drawable);
+    if (drawable == NULL)
+	goto drawable_fail;
+
+    dPriv->driverPrivate = drawable;
+    drawable->dPriv = dPriv;
+
+    drawable->row = malloc(MAX_WIDTH * 4);
+    if (drawable->row == NULL)
+	goto drawable_fail;
+
+    fb = &drawable->Base;
+
+    /* basic framebuffer setup */
+    _mesa_initialize_window_framebuffer(fb, visual);
+
+    /* add front renderbuffer */
+    frontrb = swrast_new_renderbuffer(visual, GL_TRUE);
+    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontrb->Base);
+
+    /* add back renderbuffer */
+    if (visual->doubleBufferMode) {
+	backrb = swrast_new_renderbuffer(visual, GL_FALSE);
+	_mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backrb->Base);
+    }
+
+    /* add software renderbuffers */
+    _mesa_add_soft_renderbuffers(fb,
+				 GL_FALSE, /* color */
+				 visual->haveDepthBuffer,
+				 visual->haveStencilBuffer,
+				 visual->haveAccumBuffer,
+				 GL_FALSE, /* alpha */
+				 GL_FALSE /* aux bufs */);
+
+    return GL_TRUE;
+
+drawable_fail:
+
+    if (drawable)
+	free(drawable->row);
+
+    FREE(drawable);
+
+    return GL_FALSE;
+}
+
+static void
+dri_destroy_buffer(__DRIdrawable * dPriv)
+{
+    TRACE;
+
+    if (dPriv) {
+	struct dri_drawable *drawable = dri_drawable(dPriv);
+	struct gl_framebuffer *fb;
+
+	free(drawable->row);
+
+	fb = &drawable->Base;
+
+	fb->DeletePending = GL_TRUE;
+	_mesa_reference_framebuffer(&fb, NULL);
+    }
+}
+
+static void
+dri_swap_buffers(__DRIdrawable * dPriv)
+{
+    __DRIscreen *sPriv = dPriv->driScreenPriv;
+
+    GET_CURRENT_CONTEXT(ctx);
+
+    struct dri_drawable *drawable = dri_drawable(dPriv);
+    struct gl_framebuffer *fb;
+    struct swrast_renderbuffer *frontrb, *backrb;
+
+    TRACE;
+
+    fb = &drawable->Base;
+
+    frontrb =
+	swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
+    backrb =
+	swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
+
+    /* check for signle-buffered */
+    if (backrb == NULL)
+	return;
+
+    /* check if swapping currently bound buffer */
+    if (ctx && ctx->DrawBuffer == fb) {
+	/* flush pending rendering */
+	_mesa_notifySwapBuffers(ctx);
+    }
+
+    sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
+				   0, 0,
+				   frontrb->Base.Width,
+				   frontrb->Base.Height,
+				   backrb->Base.Data,
+				   dPriv->loaderPrivate);
+}
+
+
+/**
+ * General device driver functions.
+ */
+
+static void
+get_window_size( struct gl_framebuffer *fb, GLsizei *w, GLsizei *h )
+{
+    __DRIdrawable *dPriv = swrast_drawable(fb)->dPriv;
+    __DRIscreen *sPriv = dPriv->driScreenPriv;
+    int x, y;
+
+    sPriv->swrast_loader->getDrawableInfo(dPriv,
+					  &x, &y, w, h,
+					  dPriv->loaderPrivate);
+}
+
+static void
+swrast_check_and_update_window_size( struct gl_context *ctx, struct gl_framebuffer *fb )
+{
+    GLsizei width, height;
+
+    get_window_size(fb, &width, &height);
+    if (fb->Width != width || fb->Height != height) {
+	_mesa_resize_framebuffer(ctx, fb, width, height);
+    }
+}
+
+static const GLubyte *
+get_string(struct gl_context *ctx, GLenum pname)
+{
+    (void) ctx;
+    switch (pname) {
+	case GL_VENDOR:
+	    return (const GLubyte *) "Mesa Project";
+	case GL_RENDERER:
+	    return (const GLubyte *) "Software Rasterizer";
+	default:
+	    return NULL;
+    }
+}
+
+static void
+update_state( struct gl_context *ctx, GLuint new_state )
+{
+    /* not much to do here - pass it on */
+    _swrast_InvalidateState( ctx, new_state );
+    _swsetup_InvalidateState( ctx, new_state );
+    _vbo_InvalidateState( ctx, new_state );
+    _tnl_InvalidateState( ctx, new_state );
+}
+
+static void
+viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
+{
+    struct gl_framebuffer *draw = ctx->WinSysDrawBuffer;
+    struct gl_framebuffer *read = ctx->WinSysReadBuffer;
+
+    (void) x;
+    (void) y;
+    (void) w;
+    (void) h;
+    swrast_check_and_update_window_size(ctx, draw);
+    swrast_check_and_update_window_size(ctx, read);
+}
+
+static gl_format swrastChooseTextureFormat(struct gl_context * ctx,
+					   GLint internalFormat,
+					   GLenum format,
+					   GLenum type)
+{
+    if (internalFormat == GL_RGB)
+	return MESA_FORMAT_XRGB8888;
+    return _mesa_choose_tex_format(ctx, internalFormat, format, type);
+}
+
+static void
+swrast_init_driver_functions(struct dd_function_table *driver)
+{
+    driver->GetString = get_string;
+    driver->UpdateState = update_state;
+    driver->GetBufferSize = NULL;
+    driver->Viewport = viewport;
+    driver->ChooseTextureFormat = swrastChooseTextureFormat;
+}
+
+static const char *es2_extensions[] = {
+   /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */
+   "GL_ARB_draw_buffers",
+   "GL_ARB_multisample",
+   "GL_ARB_texture_compression",
+   "GL_ARB_transpose_matrix",
+   "GL_ARB_vertex_buffer_object",
+   "GL_ARB_window_pos",
+   "GL_EXT_blend_func_separate",
+   "GL_EXT_compiled_vertex_array",
+   "GL_EXT_framebuffer_blit",
+   "GL_EXT_multi_draw_arrays",
+   "GL_EXT_polygon_offset",
+   "GL_EXT_texture_object",
+   "GL_EXT_vertex_array",
+   "GL_IBM_multimode_draw_arrays",
+   "GL_MESA_window_pos",
+   "GL_NV_vertex_program",
+
+   /* Required by GLES2 */
+   "GL_ARB_fragment_program",
+   "GL_ARB_fragment_shader",
+   "GL_ARB_multitexture",
+   "GL_ARB_shader_objects",
+   "GL_ARB_texture_cube_map",
+   "GL_ARB_texture_mirrored_repeat",
+   "GL_ARB_texture_non_power_of_two",
+   "GL_ARB_vertex_shader",
+   "GL_EXT_blend_color",
+   "GL_EXT_blend_equation_separate",
+   "GL_EXT_blend_minmax",
+   "GL_EXT_blend_subtract",
+   "GL_EXT_stencil_wrap",
+
+   /* Optional GLES2 */
+   "GL_ARB_framebuffer_object",
+   "GL_EXT_texture_filter_anisotropic",
+   "GL_ARB_depth_texture",
+   "GL_EXT_packed_depth_stencil",
+   "GL_EXT_framebuffer_object",
+   NULL,
+};
+
+static void
+InitExtensionsES2(struct gl_context *ctx)
+{
+   int i;
+
+   for (i = 0; es2_extensions[i]; i++)
+      _mesa_enable_extension(ctx, es2_extensions[i]);
+}
+
+/**
+ * Context-related functions.
+ */
+
+static GLboolean
+dri_create_context(gl_api api,
+		   const struct gl_config * visual,
+		   __DRIcontext * cPriv, void *sharedContextPrivate)
+{
+    struct dri_context *ctx = NULL;
+    struct dri_context *share = (struct dri_context *)sharedContextPrivate;
+    struct gl_context *mesaCtx = NULL;
+    struct gl_context *sharedCtx = NULL;
+    struct dd_function_table functions;
+
+    TRACE;
+
+    ctx = CALLOC_STRUCT(dri_context);
+    if (ctx == NULL)
+	goto context_fail;
+
+    cPriv->driverPrivate = ctx;
+    ctx->cPriv = cPriv;
+
+    /* build table of device driver functions */
+    _mesa_init_driver_functions(&functions);
+    swrast_init_driver_functions(&functions);
+
+    if (share) {
+	sharedCtx = &share->Base;
+    }
+
+    mesaCtx = &ctx->Base;
+
+    /* basic context setup */
+    if (!_mesa_initialize_context(mesaCtx, api, visual, sharedCtx, &functions, (void *) cPriv)) {
+	goto context_fail;
+    }
+
+    /* do bounds checking to prevent segfaults and server crashes! */
+    mesaCtx->Const.CheckArrayBounds = GL_TRUE;
+
+    /* create module contexts */
+    _swrast_CreateContext( mesaCtx );
+    _vbo_CreateContext( mesaCtx );
+    _tnl_CreateContext( mesaCtx );
+    _swsetup_CreateContext( mesaCtx );
+    _swsetup_Wakeup( mesaCtx );
+
+    /* use default TCL pipeline */
+    {
+       TNLcontext *tnl = TNL_CONTEXT(mesaCtx);
+       tnl->Driver.RunPipeline = _tnl_run_pipeline;
+    }
+
+    _mesa_meta_init(mesaCtx);
+    _mesa_enable_sw_extensions(mesaCtx);
+
+    switch (api) {
+    case API_OPENGL:
+        _mesa_enable_1_3_extensions(mesaCtx);
+        _mesa_enable_1_4_extensions(mesaCtx);
+        _mesa_enable_1_5_extensions(mesaCtx);
+        _mesa_enable_2_0_extensions(mesaCtx);
+        _mesa_enable_2_1_extensions(mesaCtx);
+        break;
+    case API_OPENGLES:
+        _mesa_enable_1_3_extensions(mesaCtx);
+        _mesa_enable_1_4_extensions(mesaCtx);
+        _mesa_enable_1_5_extensions(mesaCtx);
+
+        break;
+    case API_OPENGLES2:
+        InitExtensionsES2( mesaCtx);
+        break;
+    }
+
+    return GL_TRUE;
+
+context_fail:
+
+    FREE(ctx);
+
+    return GL_FALSE;
+}
+
+static void
+dri_destroy_context(__DRIcontext * cPriv)
+{
+    TRACE;
+
+    if (cPriv) {
+	struct dri_context *ctx = dri_context(cPriv);
+	struct gl_context *mesaCtx;
+
+	mesaCtx = &ctx->Base;
+
+        _mesa_meta_free(mesaCtx);
+	_swsetup_DestroyContext( mesaCtx );
+	_swrast_DestroyContext( mesaCtx );
+	_tnl_DestroyContext( mesaCtx );
+	_vbo_DestroyContext( mesaCtx );
+	_mesa_destroy_context( mesaCtx );
+    }
+}
+
+static GLboolean
+dri_make_current(__DRIcontext * cPriv,
+		 __DRIdrawable * driDrawPriv,
+		 __DRIdrawable * driReadPriv)
+{
+    struct gl_context *mesaCtx;
+    struct gl_framebuffer *mesaDraw;
+    struct gl_framebuffer *mesaRead;
+    TRACE;
+
+    if (cPriv) {
+	struct dri_context *ctx = dri_context(cPriv);
+	struct dri_drawable *draw;
+	struct dri_drawable *read;
+
+	if (!driDrawPriv || !driReadPriv)
+	    return GL_FALSE;
+
+	draw = dri_drawable(driDrawPriv);
+	read = dri_drawable(driReadPriv);
+	mesaCtx = &ctx->Base;
+	mesaDraw = &draw->Base;
+	mesaRead = &read->Base;
+
+	/* check for same context and buffer */
+	if (mesaCtx == _mesa_get_current_context()
+	    && mesaCtx->DrawBuffer == mesaDraw
+	    && mesaCtx->ReadBuffer == mesaRead) {
+	    return GL_TRUE;
+	}
+
+	_glapi_check_multithread();
+
+	swrast_check_and_update_window_size(mesaCtx, mesaDraw);
+	if (mesaRead != mesaDraw)
+	    swrast_check_and_update_window_size(mesaCtx, mesaRead);
+
+	_mesa_make_current( mesaCtx,
+			    mesaDraw,
+			    mesaRead );
+    }
+    else {
+	/* unbind */
+	_mesa_make_current( NULL, NULL, NULL );
+    }
+
+    return GL_TRUE;
+}
+
+static GLboolean
+dri_unbind_context(__DRIcontext * cPriv)
+{
+    TRACE;
+    (void) cPriv;
+
+    /* Unset current context and dispath table */
+    _mesa_make_current(NULL, NULL, NULL);
+
+    return GL_TRUE;
+}
+
+
+const struct __DriverAPIRec driDriverAPI = {
+    /*.InitScreen = */dri_init_screen,
+    /*.DestroyScreen = */dri_destroy_screen,
+    /*.CreateContext = */dri_create_context,
+    /*.DestroyContext = */dri_destroy_context,
+    /*.CreateBuffer = */dri_create_buffer,
+    /*.DestroyBuffer = */dri_destroy_buffer,
+    /*.SwapBuffers = */dri_swap_buffers,
+    /*.MakeCurrent = */dri_make_current,
+    /*.UnbindContext = */dri_unbind_context,
+};
+
+/* This is the table of extensions that the loader will dlsym() for. */
+PUBLIC const __DRIextension *__driDriverExtensions[] = {
+    &driCoreExtension.base,
+    &driSWRastExtension.base,
+    NULL
+};