libfontenc libXinerama mesa git update 4 feb 2011

1 files changed, 806 insertions, 739 deletions

diff --git a/mesalib/src/mesa/drivers/dri/swrast/swrast.c b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
index 3ac32b1b4..144b187c1 100644
--- a/mesalib/src/mesa/drivers/dri/swrast/swrast.c
+++ b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
@@ -1,739 +1,806 @@
-/*

- * 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.

- */

-

-#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];

-

-    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", __func__, __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", __func__,

-		__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;

-}

-

-

-/**

- * 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;

-

-    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;

-

-    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;

-

-    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;

-}

-

-

-/**

- * 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, 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_enable_sw_extensions(mesaCtx);

-    _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);

-

-    _mesa_meta_init(mesaCtx);

-

-    driInitExtensions( mesaCtx, NULL, GL_FALSE );

-

-    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.
+ */
+
+#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];
+
+    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", __func__, __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", __func__,
+		__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;
+}
+
+
+/**
+ * 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;
+
+    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;
+
+    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;
+
+    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;
+
+   /* Can't use driInitExtensions() since it uses extensions from
+    * main/remap_helper.h when called the first time. */
+
+   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_for_api(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);
+
+        driInitExtensions( mesaCtx, NULL, GL_FALSE );
+        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
+};