From 51a59b7f7f9b134791d3b09673063e4c45ea9eee Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 9 Feb 2011 07:47:31 +0000 Subject: libX11 mesa git update 9 Feb 2011 --- mesalib/src/mesa/drivers/dri/common/dri_util.c | 2042 ++++++++++++------------ 1 file changed, 1030 insertions(+), 1012 deletions(-) (limited to 'mesalib/src/mesa/drivers/dri/common/dri_util.c') diff --git a/mesalib/src/mesa/drivers/dri/common/dri_util.c b/mesalib/src/mesa/drivers/dri/common/dri_util.c index 8b3b55e5e..82638fa72 100644 --- a/mesalib/src/mesa/drivers/dri/common/dri_util.c +++ b/mesalib/src/mesa/drivers/dri/common/dri_util.c @@ -1,1012 +1,1030 @@ -/** - * \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 -#include -#include -#include -#include - -#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; - - 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 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 is the only - * type likely to ever be supported for direct-rendering. - * \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; - - 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) -{ - 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; - - 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 -}; - -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 +#include +#include +#include +#include + +#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; + + 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 is the only + * type likely to ever be supported for direct-rendering. + * \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; + + 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) +{ + 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; + + 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++; +} + +/*@}*/ -- cgit v1.2.3