WebSVN – Kolibri OS – Blame – /contrib/sdk/sources/Mesa/mesa-10.6.0/src/mesa/drivers/dri/i915/intel_screen.c

Rev	Author	Line No.	Line
5564	serge	1	/**************************************************************************
		2	*
		3	* Copyright 2003 VMware, Inc.
		4	* All Rights Reserved.
		5	*
		6	* Permission is hereby granted, free of charge, to any person obtaining a
		7	* copy of this software and associated documentation files (the
		8	* "Software"), to deal in the Software without restriction, including
		9	* without limitation the rights to use, copy, modify, merge, publish,
		10	* distribute, sub license, and/or sell copies of the Software, and to
		11	* permit persons to whom the Software is furnished to do so, subject to
		12	* the following conditions:
		13	*
		14	* The above copyright notice and this permission notice (including the
		15	* next paragraph) shall be included in all copies or substantial portions
		16	* of the Software.
		17	*
		18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
		19	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
		20	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
		21	* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
		22	* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		23	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		24	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
		25	*
		26	**************************************************************************/
		27
		28	#include
		29	#include
		30	#include
		31	#include "main/glheader.h"
		32	#include "main/context.h"
		33	#include "main/framebuffer.h"
		34	#include "main/renderbuffer.h"
		35	#include "main/texobj.h"
		36	#include "main/hash.h"
		37	#include "main/fbobject.h"
		38	#include "main/version.h"
		39	#include "swrast/s_renderbuffer.h"
		40
		41	#include "utils.h"
		42	#include "xmlpool.h"
		43
		44	static const __DRIconfigOptionsExtension i915_config_options = {
		45	.base = { __DRI_CONFIG_OPTIONS, 1 },
		46	.xml =
		47
		48	DRI_CONF_BEGIN
		49	DRI_CONF_SECTION_PERFORMANCE
		50	DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
		51	/* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
		52	* DRI_CONF_BO_REUSE_ALL
		53	*/
		54	DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
		55	DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
		56	DRI_CONF_ENUM(0, "Disable buffer object reuse")
		57	DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
		58	DRI_CONF_DESC_END
		59	DRI_CONF_OPT_END
		60
		61	DRI_CONF_OPT_BEGIN_B(early_z, "false")
		62	DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
		63	DRI_CONF_OPT_END
		64
		65	DRI_CONF_SECTION_END
		66	DRI_CONF_SECTION_QUALITY
		67	DRI_CONF_FORCE_S3TC_ENABLE("false")
		68	DRI_CONF_SECTION_END
		69	DRI_CONF_SECTION_DEBUG
		70	DRI_CONF_NO_RAST("false")
		71	DRI_CONF_ALWAYS_FLUSH_BATCH("false")
		72	DRI_CONF_ALWAYS_FLUSH_CACHE("false")
		73	DRI_CONF_DISABLE_THROTTLING("false")
		74	DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
		75	DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
		76	DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
		77
		78	DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
		79	DRI_CONF_DESC(en, "Perform code generation at shader link time.")
		80	DRI_CONF_OPT_END
		81	DRI_CONF_SECTION_END
		82	DRI_CONF_END
		83	};
		84
		85	#include "intel_batchbuffer.h"
		86	#include "intel_buffers.h"
		87	#include "intel_bufmgr.h"
		88	#include "intel_chipset.h"
		89	#include "intel_fbo.h"
		90	#include "intel_mipmap_tree.h"
		91	#include "intel_screen.h"
		92	#include "intel_tex.h"
		93	#include "intel_regions.h"
		94
		95	#include "i915_drm.h"
		96
		97	/**
		98	* For debugging purposes, this returns a time in seconds.
		99	*/
		100	double
		101	get_time(void)
		102	{
		103	struct timespec tp;
		104
		105	clock_gettime(CLOCK_MONOTONIC, &tp);
		106
		107	return tp.tv_sec + tp.tv_nsec / 1000000000.0;
		108	}
		109
		110	void
		111	aub_dump_bmp(struct gl_context *ctx)
		112	{
		113	struct gl_framebuffer *fb = ctx->DrawBuffer;
		114
		115	for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
		116	struct intel_renderbuffer *irb =
		117	intel_renderbuffer(fb->_ColorDrawBuffers[i]);
		118
		119	if (irb && irb->mt) {
		120	enum aub_dump_bmp_format format;
		121
		122	switch (irb->Base.Base.Format) {
		123	case MESA_FORMAT_B8G8R8A8_UNORM:
		124	case MESA_FORMAT_B8G8R8X8_UNORM:
		125	format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
		126	break;
		127	default:
		128	continue;
		129	}
		130
		131	assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
		132	drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
		133	irb->draw_x,
		134	irb->draw_y,
		135	irb->Base.Base.Width,
		136	irb->Base.Base.Height,
		137	format,
		138	irb->mt->region->pitch,
		139	0);
		140	}
		141	}
		142	}
		143
		144	static const __DRItexBufferExtension intelTexBufferExtension = {
		145	.base = { __DRI_TEX_BUFFER, 3 },
		146
		147	.setTexBuffer = intelSetTexBuffer,
		148	.setTexBuffer2 = intelSetTexBuffer2,
		149	.releaseTexBuffer = NULL,
		150	};
		151
		152	static void
		153	intelDRI2Flush(__DRIdrawable *drawable)
		154	{
		155	GET_CURRENT_CONTEXT(ctx);
		156	struct intel_context *intel = intel_context(ctx);
		157	if (intel == NULL)
		158	return;
		159
		160	INTEL_FIREVERTICES(intel);
		161
		162	intel->need_throttle = true;
		163
		164	if (intel->batch.used)
		165	intel_batchbuffer_flush(intel);
		166
		167	if (INTEL_DEBUG & DEBUG_AUB) {
		168	aub_dump_bmp(ctx);
		169	}
		170	}
		171
		172	static const struct __DRI2flushExtensionRec intelFlushExtension = {
		173	.base = { __DRI2_FLUSH, 3 },
		174
		175	.flush = intelDRI2Flush,
		176	.invalidate = dri2InvalidateDrawable,
		177	};
		178
		179	static struct intel_image_format intel_image_formats[] = {
		180	{ __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
		181	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
		182
		183	{ __DRI_IMAGE_FOURCC_SARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
		184	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_SARGB8, 4 } } },
		185
		186	{ __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
		187	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
		188
		189	{ __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
		190	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		191	{ 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
		192	{ 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
		193
		194	{ __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
		195	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		196	{ 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		197	{ 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
		198
		199	{ __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
		200	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		201	{ 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
		202	{ 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
		203
		204	{ __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
		205	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		206	{ 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		207	{ 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
		208
		209	{ __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
		210	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		211	{ 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		212	{ 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
		213
		214	{ __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
		215	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		216	{ 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
		217
		218	{ __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
		219	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
		220	{ 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
		221
		222	/* For YUYV buffers, we set up two overlapping DRI images and treat
		223	* them as planar buffers in the compositors. Plane 0 is GR88 and
		224	* samples YU or YV pairs and places Y into the R component, while
		225	* plane 1 is ARGB and samples YUYV clusters and places pairs and
		226	* places U into the G component and V into A. This lets the
		227	* texture sampler interpolate the Y components correctly when
		228	* sampling from plane 0, and interpolate U and V correctly when
		229	* sampling from plane 1. */
		230	{ __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
		231	{ { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
		232	{ 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
		233	};
		234
		235	static __DRIimage *
		236	intel_allocate_image(int dri_format, void *loaderPrivate)
		237	{
		238	__DRIimage *image;
		239
		240	image = calloc(1, sizeof *image);
		241	if (image == NULL)
		242	return NULL;
		243
		244	image->dri_format = dri_format;
		245	image->offset = 0;
		246
		247	image->format = driImageFormatToGLFormat(dri_format);
		248	if (dri_format != __DRI_IMAGE_FORMAT_NONE &&
		249	image->format == MESA_FORMAT_NONE) {
		250	free(image);
		251	return NULL;
		252	}
		253
		254	image->internal_format = _mesa_get_format_base_format(image->format);
		255	image->data = loaderPrivate;
		256
		257	return image;
		258	}
		259
		260	/**
		261	* Sets up a DRIImage structure to point to our shared image in a region
		262	*/
		263	static void
		264	intel_setup_image_from_mipmap_tree(struct intel_context intel, __DRIimage image,
		265	struct intel_mipmap_tree *mt, GLuint level,
		266	GLuint zoffset)
		267	{
		268	unsigned int draw_x, draw_y;
		269	uint32_t mask_x, mask_y;
		270
		271	intel_miptree_check_level_layer(mt, level, zoffset);
		272
		273	intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
		274	intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
		275
		276	image->width = mt->level[level].width;
		277	image->height = mt->level[level].height;
		278	image->tile_x = draw_x & mask_x;
		279	image->tile_y = draw_y & mask_y;
		280
		281	image->offset = intel_region_get_aligned_offset(mt->region,
		282	draw_x & ~mask_x,
		283	draw_y & ~mask_y,
		284	false);
		285
		286	intel_region_reference(&image->region, mt->region);
		287	}
		288
		289	static void
		290	intel_setup_image_from_dimensions(__DRIimage *image)
		291	{
		292	image->width = image->region->width;
		293	image->height = image->region->height;
		294	image->tile_x = 0;
		295	image->tile_y = 0;
		296	}
		297
		298	static __DRIimage *
		299	intel_create_image_from_name(__DRIscreen *screen,
		300	int width, int height, int format,
		301	int name, int pitch, void *loaderPrivate)
		302	{
		303	struct intel_screen *intelScreen = screen->driverPrivate;
		304	__DRIimage *image;
		305	int cpp;
		306
		307	image = intel_allocate_image(format, loaderPrivate);
		308	if (image == NULL)
		309	return NULL;
		310
		311	if (image->format == MESA_FORMAT_NONE)
		312	cpp = 1;
		313	else
		314	cpp = _mesa_get_format_bytes(image->format);
		315	image->region = intel_region_alloc_for_handle(intelScreen,
		316	cpp, width, height,
		317	pitch * cpp, name, "image");
		318	if (image->region == NULL) {
		319	free(image);
		320	return NULL;
		321	}
		322
		323	intel_setup_image_from_dimensions(image);
		324
		325	return image;
		326	}
		327
		328	static __DRIimage *
		329	intel_create_image_from_renderbuffer(__DRIcontext *context,
		330	int renderbuffer, void *loaderPrivate)
		331	{
		332	__DRIimage *image;
		333	struct intel_context *intel = context->driverPrivate;
		334	struct gl_renderbuffer *rb;
		335	struct intel_renderbuffer *irb;
		336
		337	rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
		338	if (!rb) {
		339	_mesa_error(&intel->ctx,
		340	GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
		341	return NULL;
		342	}
		343
		344	irb = intel_renderbuffer(rb);
		345	image = calloc(1, sizeof *image);
		346	if (image == NULL)
		347	return NULL;
		348
		349	image->internal_format = rb->InternalFormat;
		350	image->format = rb->Format;
		351	image->offset = 0;
		352	image->data = loaderPrivate;
		353	intel_region_reference(&image->region, irb->mt->region);
		354	intel_setup_image_from_dimensions(image);
		355	image->dri_format = driGLFormatToImageFormat(image->format);
		356
		357	rb->NeedsFinishRenderTexture = true;
		358	return image;
		359	}
		360
		361	static __DRIimage *
		362	intel_create_image_from_texture(__DRIcontext *context, int target,
		363	unsigned texture, int zoffset,
		364	int level,
		365	unsigned *error,
		366	void *loaderPrivate)
		367	{
		368	__DRIimage *image;
		369	struct intel_context *intel = context->driverPrivate;
		370	struct gl_texture_object *obj;
		371	struct intel_texture_object *iobj;
		372	GLuint face = 0;
		373
		374	obj = _mesa_lookup_texture(&intel->ctx, texture);
		375	if (!obj \|\| obj->Target != target) {
		376	*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
		377	return NULL;
		378	}
		379
		380	if (target == GL_TEXTURE_CUBE_MAP)
		381	face = zoffset;
		382
		383	_mesa_test_texobj_completeness(&intel->ctx, obj);
		384	iobj = intel_texture_object(obj);
		385	if (!obj->_BaseComplete \|\| (level > 0 && !obj->_MipmapComplete)) {
		386	*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
		387	return NULL;
		388	}
		389
		390	if (level < obj->BaseLevel \|\| level > obj->_MaxLevel) {
		391	*error = __DRI_IMAGE_ERROR_BAD_MATCH;
		392	return NULL;
		393	}
		394
		395	if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
		396	*error = __DRI_IMAGE_ERROR_BAD_MATCH;
		397	return NULL;
		398	}
		399	image = calloc(1, sizeof *image);
		400	if (image == NULL) {
		401	*error = __DRI_IMAGE_ERROR_BAD_ALLOC;
		402	return NULL;
		403	}
		404
		405	image->internal_format = obj->Image[face][level]->InternalFormat;
		406	image->format = obj->Image[face][level]->TexFormat;
		407	image->data = loaderPrivate;
		408	intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
		409	image->dri_format = driGLFormatToImageFormat(image->format);
		410	if (image->dri_format == MESA_FORMAT_NONE) {
		411	*error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
		412	free(image);
		413	return NULL;
		414	}
		415
		416	*error = __DRI_IMAGE_ERROR_SUCCESS;
		417	return image;
		418	}
		419
		420	static void
		421	intel_destroy_image(__DRIimage *image)
		422	{
		423	intel_region_release(&image->region);
		424	free(image);
		425	}
		426
		427	static __DRIimage *
		428	intel_create_image(__DRIscreen *screen,
		429	int width, int height, int format,
		430	unsigned int use,
		431	void *loaderPrivate)
		432	{
		433	__DRIimage *image;
		434	struct intel_screen *intelScreen = screen->driverPrivate;
		435	uint32_t tiling;
		436	int cpp;
		437
		438	tiling = I915_TILING_X;
		439	if (use & __DRI_IMAGE_USE_CURSOR) {
		440	if (width != 64 \|\| height != 64)
		441	return NULL;
		442	tiling = I915_TILING_NONE;
		443	}
		444
		445	if (use & __DRI_IMAGE_USE_LINEAR)
		446	tiling = I915_TILING_NONE;
		447
		448	image = intel_allocate_image(format, loaderPrivate);
		449	if (image == NULL)
		450	return NULL;
		451
		452	cpp = _mesa_get_format_bytes(image->format);
		453	image->region =
		454	intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
		455	if (image->region == NULL) {
		456	free(image);
		457	return NULL;
		458	}
		459
		460	intel_setup_image_from_dimensions(image);
		461
		462	return image;
		463	}
		464
		465	static GLboolean
		466	intel_query_image(__DRIimage image, int attrib, int value)
		467	{
		468	switch (attrib) {
		469	case __DRI_IMAGE_ATTRIB_STRIDE:
		470	*value = image->region->pitch;
		471	return true;
		472	case __DRI_IMAGE_ATTRIB_HANDLE:
		473	*value = image->region->bo->handle;
		474	return true;
		475	case __DRI_IMAGE_ATTRIB_NAME:
		476	return intel_region_flink(image->region, (uint32_t *) value);
		477	case __DRI_IMAGE_ATTRIB_FORMAT:
		478	*value = image->dri_format;
		479	return true;
		480	case __DRI_IMAGE_ATTRIB_WIDTH:
		481	*value = image->region->width;
		482	return true;
		483	case __DRI_IMAGE_ATTRIB_HEIGHT:
		484	*value = image->region->height;
		485	return true;
		486	case __DRI_IMAGE_ATTRIB_COMPONENTS:
		487	if (image->planar_format == NULL)
		488	return false;
		489	*value = image->planar_format->components;
		490	return true;
		491	case __DRI_IMAGE_ATTRIB_FD:
		492	if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
		493	return true;
		494	return false;
		495	default:
		496	return false;
		497	}
		498	}
		499
		500	static __DRIimage *
		501	intel_dup_image(__DRIimage orig_image, void loaderPrivate)
		502	{
		503	__DRIimage *image;
		504
		505	image = calloc(1, sizeof *image);
		506	if (image == NULL)
		507	return NULL;
		508
		509	intel_region_reference(&image->region, orig_image->region);
		510	if (image->region == NULL) {
		511	free(image);
		512	return NULL;
		513	}
		514
		515	image->internal_format = orig_image->internal_format;
		516	image->planar_format = orig_image->planar_format;
		517	image->dri_format = orig_image->dri_format;
		518	image->format = orig_image->format;
		519	image->offset = orig_image->offset;
		520	image->width = orig_image->width;
		521	image->height = orig_image->height;
		522	image->tile_x = orig_image->tile_x;
		523	image->tile_y = orig_image->tile_y;
		524	image->data = loaderPrivate;
		525
		526	memcpy(image->strides, orig_image->strides, sizeof(image->strides));
		527	memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
		528
		529	return image;
		530	}
		531
		532	static GLboolean
		533	intel_validate_usage(__DRIimage *image, unsigned int use)
		534	{
		535	if (use & __DRI_IMAGE_USE_CURSOR) {
		536	if (image->region->width != 64 \|\| image->region->height != 64)
		537	return GL_FALSE;
		538	}
		539
		540	return GL_TRUE;
		541	}
		542
		543	static __DRIimage *
		544	intel_create_image_from_names(__DRIscreen *screen,
		545	int width, int height, int fourcc,
		546	int *names, int num_names,
		547	int strides, int offsets,
		548	void *loaderPrivate)
		549	{
		550	struct intel_image_format *f = NULL;
		551	__DRIimage *image;
		552	int i, index;
		553
		554	if (screen == NULL \|\| names == NULL \|\| num_names != 1)
		555	return NULL;
		556
		557	for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
		558	if (intel_image_formats[i].fourcc == fourcc) {
		559	f = &intel_image_formats[i];
		560	}
		561	}
		562
		563	if (f == NULL)
		564	return NULL;
		565
		566	image = intel_create_image_from_name(screen, width, height,
		567	__DRI_IMAGE_FORMAT_NONE,
		568	names[0], strides[0],
		569	loaderPrivate);
		570
		571	if (image == NULL)
		572	return NULL;
		573
		574	image->planar_format = f;
		575	for (i = 0; i < f->nplanes; i++) {
		576	index = f->planes[i].buffer_index;
		577	image->offsets[index] = offsets[index];
		578	image->strides[index] = strides[index];
		579	}
		580
		581	return image;
		582	}
		583
		584	static __DRIimage *
		585	intel_create_image_from_fds(__DRIscreen *screen,
		586	int width, int height, int fourcc,
		587	int fds, int num_fds, int strides, int *offsets,
		588	void *loaderPrivate)
		589	{
		590	struct intel_screen *intelScreen = screen->driverPrivate;
		591	struct intel_image_format *f = NULL;
		592	__DRIimage *image;
		593	int i, index;
		594
		595	if (fds == NULL \|\| num_fds != 1)
		596	return NULL;
		597
		598	for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
		599	if (intel_image_formats[i].fourcc == fourcc) {
		600	f = &intel_image_formats[i];
		601	}
		602	}
		603
		604	if (f == NULL)
		605	return NULL;
		606
		607	image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
		608	if (image == NULL)
		609	return NULL;
		610
		611	image->region = intel_region_alloc_for_fd(intelScreen,
		612	f->planes[0].cpp, width, height, strides[0],
		613	height * strides[0], fds[0], "image");
		614	if (image->region == NULL) {
		615	free(image);
		616	return NULL;
		617	}
		618
		619	intel_setup_image_from_dimensions(image);
		620
		621	image->planar_format = f;
		622	for (i = 0; i < f->nplanes; i++) {
		623	index = f->planes[i].buffer_index;
		624	image->offsets[index] = offsets[index];
		625	image->strides[index] = strides[index];
		626	}
		627
		628	return image;
		629	}
		630
		631
		632	static __DRIimage *
		633	intel_from_planar(__DRIimage parent, int plane, void loaderPrivate)
		634	{
		635	int width, height, offset, stride, dri_format, index;
		636	struct intel_image_format *f;
		637	uint32_t mask_x, mask_y;
		638	__DRIimage *image;
		639
		640	if (parent == NULL \|\| parent->planar_format == NULL)
		641	return NULL;
		642
		643	f = parent->planar_format;
		644
		645	if (plane >= f->nplanes)
		646	return NULL;
		647
		648	width = parent->region->width >> f->planes[plane].width_shift;
		649	height = parent->region->height >> f->planes[plane].height_shift;
		650	dri_format = f->planes[plane].dri_format;
		651	index = f->planes[plane].buffer_index;
		652	offset = parent->offsets[index];
		653	stride = parent->strides[index];
		654
		655	image = intel_allocate_image(dri_format, loaderPrivate);
		656	if (image == NULL)
		657	return NULL;
		658
		659	if (offset + height * stride > parent->region->bo->size) {
		660	_mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
		661	free(image);
		662	return NULL;
		663	}
		664
		665	image->region = calloc(sizeof(*image->region), 1);
		666	if (image->region == NULL) {
		667	free(image);
		668	return NULL;
		669	}
		670
		671	image->region->cpp = _mesa_get_format_bytes(image->format);
		672	image->region->width = width;
		673	image->region->height = height;
		674	image->region->pitch = stride;
		675	image->region->refcount = 1;
		676	image->region->bo = parent->region->bo;
		677	drm_intel_bo_reference(image->region->bo);
		678	image->region->tiling = parent->region->tiling;
		679	image->offset = offset;
		680	intel_setup_image_from_dimensions(image);
		681
		682	intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
		683	if (offset & mask_x)
		684	_mesa_warning(NULL,
		685	"intel_create_sub_image: offset not on tile boundary");
		686
		687	return image;
		688	}
		689
		690	static const __DRIimageExtension intelImageExtension = {
		691	.base = { __DRI_IMAGE, 7 },
		692
		693	.createImageFromName = intel_create_image_from_name,
		694	.createImageFromRenderbuffer = intel_create_image_from_renderbuffer,
		695	.destroyImage = intel_destroy_image,
		696	.createImage = intel_create_image,
		697	.queryImage = intel_query_image,
		698	.dupImage = intel_dup_image,
		699	.validateUsage = intel_validate_usage,
		700	.createImageFromNames = intel_create_image_from_names,
		701	.fromPlanar = intel_from_planar,
		702	.createImageFromTexture = intel_create_image_from_texture,
		703	.createImageFromFds = intel_create_image_from_fds
		704	};
		705
		706	static int
		707	i915_query_renderer_integer(__DRIscreen psp, int param, unsigned int value)
		708	{
		709	const struct intel_screen *const intelScreen =
		710	(struct intel_screen *) psp->driverPrivate;
		711
		712	switch (param) {
		713	case __DRI2_RENDERER_VENDOR_ID:
		714	value[0] = 0x8086;
		715	return 0;
		716	case __DRI2_RENDERER_DEVICE_ID:
		717	value[0] = intelScreen->deviceID;
		718	return 0;
		719	case __DRI2_RENDERER_ACCELERATED:
		720	value[0] = 1;
		721	return 0;
		722	case __DRI2_RENDERER_VIDEO_MEMORY: {
		723	/* Once a batch uses more than 75% of the maximum mappable size, we
		724	* assume that there's some fragmentation, and we start doing extra
		725	* flushing, etc. That's the big cliff apps will care about.
		726	*/
		727	size_t aper_size;
		728	size_t mappable_size;
		729
		730	drm_intel_get_aperture_sizes(psp->fd, &mappable_size, &aper_size);
		731
		732	const unsigned gpu_mappable_megabytes =
		733	(aper_size / (1024 * 1024)) * 3 / 4;
		734
		735	const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
		736	const long system_page_size = sysconf(_SC_PAGE_SIZE);
		737
		738	if (system_memory_pages <= 0 \|\| system_page_size <= 0)
		739	return -1;
		740
		741	const uint64_t system_memory_bytes = (uint64_t) system_memory_pages
		742	* (uint64_t) system_page_size;
		743
		744	const unsigned system_memory_megabytes =
		745	(unsigned) (system_memory_bytes / (1024 * 1024));
		746
		747	value[0] = MIN2(system_memory_megabytes, gpu_mappable_megabytes);
		748	return 0;
		749	}
		750	case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
		751	value[0] = 1;
		752	return 0;
		753	default:
		754	return driQueryRendererIntegerCommon(psp, param, value);
		755	}
		756
		757	return -1;
		758	}
		759
		760	static int
		761	i915_query_renderer_string(__DRIscreen psp, int param, const char *value)
		762	{
		763	const struct intel_screen *intelScreen =
		764	(struct intel_screen *) psp->driverPrivate;
		765
		766	switch (param) {
		767	case __DRI2_RENDERER_VENDOR_ID:
		768	value[0] = i915_vendor_string;
		769	return 0;
		770	case __DRI2_RENDERER_DEVICE_ID:
		771	value[0] = i915_get_renderer_string(intelScreen->deviceID);
		772	return 0;
		773	default:
		774	break;
		775	}
		776
		777	return -1;
		778	}
		779
		780	static const __DRI2rendererQueryExtension intelRendererQueryExtension = {
		781	.base = { __DRI2_RENDERER_QUERY, 1 },
		782
		783	.queryInteger = i915_query_renderer_integer,
		784	.queryString = i915_query_renderer_string
		785	};
		786
		787	static const __DRIextension *intelScreenExtensions[] = {
		788	&intelTexBufferExtension.base,
		789	&intelFlushExtension.base,
		790	&intelImageExtension.base,
		791	&intelRendererQueryExtension.base,
		792	&dri2ConfigQueryExtension.base,
		793	NULL
		794	};
		795
		796	static bool
		797	intel_get_param(__DRIscreen psp, int param, int value)
		798	{
		799	int ret;
		800	struct drm_i915_getparam gp;
		801
		802	memset(&gp, 0, sizeof(gp));
		803	gp.param = param;
		804	gp.value = value;
		805
		806	ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
		807	if (ret) {
		808	if (ret != -EINVAL)
		809	_mesa_warning(NULL, "drm_i915_getparam: %d", ret);
		810	return false;
		811	}
		812
		813	return true;
		814	}
		815
		816	static bool
		817	intel_get_boolean(__DRIscreen *psp, int param)
		818	{
		819	int value = 0;
		820	return intel_get_param(psp, param, &value) && value;
		821	}
		822
		823	static void
		824	intelDestroyScreen(__DRIscreen * sPriv)
		825	{
		826	struct intel_screen *intelScreen = sPriv->driverPrivate;
		827
		828	dri_bufmgr_destroy(intelScreen->bufmgr);
		829	driDestroyOptionInfo(&intelScreen->optionCache);
		830
		831	free(intelScreen);
		832	sPriv->driverPrivate = NULL;
		833	}
		834
		835
		836	/**
		837	* This is called when we need to set up GL rendering to a new X window.
		838	*/
		839	static GLboolean
		840	intelCreateBuffer(__DRIscreen * driScrnPriv,
		841	__DRIdrawable * driDrawPriv,
		842	const struct gl_config * mesaVis, GLboolean isPixmap)
		843	{
		844	struct intel_renderbuffer *rb;
		845	mesa_format rgbFormat;
		846	struct gl_framebuffer *fb;
		847
		848	if (isPixmap)
		849	return false;
		850
		851	fb = CALLOC_STRUCT(gl_framebuffer);
		852	if (!fb)
		853	return false;
		854
		855	_mesa_initialize_window_framebuffer(fb, mesaVis);
		856
		857	if (mesaVis->redBits == 5)
		858	rgbFormat = MESA_FORMAT_B5G6R5_UNORM;
		859	else if (mesaVis->sRGBCapable)
		860	rgbFormat = MESA_FORMAT_B8G8R8A8_SRGB;
		861	else if (mesaVis->alphaBits == 0)
		862	rgbFormat = MESA_FORMAT_B8G8R8X8_UNORM;
		863	else
		864	rgbFormat = MESA_FORMAT_B8G8R8A8_UNORM;
		865
		866	/* setup the hardware-based renderbuffers */
		867	rb = intel_create_renderbuffer(rgbFormat);
		868	_mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
		869
		870	if (mesaVis->doubleBufferMode) {
		871	rb = intel_create_renderbuffer(rgbFormat);
		872	_mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
		873	}
		874
		875	/*
		876	* Assert here that the gl_config has an expected depth/stencil bit
		877	* combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
		878	* which constructs the advertised configs.)
		879	*/
		880	if (mesaVis->depthBits == 24) {
		881	assert(mesaVis->stencilBits == 8);
		882
		883	/*
		884	* Use combined depth/stencil. Note that the renderbuffer is
		885	* attached to two attachment points.
		886	*/
		887	rb = intel_create_private_renderbuffer(MESA_FORMAT_Z24_UNORM_S8_UINT);
		888	_mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
		889	_mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
		890	}
		891	else if (mesaVis->depthBits == 16) {
		892	assert(mesaVis->stencilBits == 0);
		893	rb = intel_create_private_renderbuffer(MESA_FORMAT_Z_UNORM16);
		894	_mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
		895	}
		896	else {
		897	assert(mesaVis->depthBits == 0);
		898	assert(mesaVis->stencilBits == 0);
		899	}
		900
		901	/* now add any/all software-based renderbuffers we may need */
		902	_swrast_add_soft_renderbuffers(fb,
		903	false, /* never sw color */
		904	false, /* never sw depth */
		905	false, /* never sw stencil */
		906	mesaVis->accumRedBits > 0,
		907	false, /* never sw alpha */
		908	false /* never sw aux */ );
		909	driDrawPriv->driverPrivate = fb;
		910
		911	return true;
		912	}
		913
		914	static void
		915	intelDestroyBuffer(__DRIdrawable * driDrawPriv)
		916	{
		917	struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
		918
		919	_mesa_reference_framebuffer(&fb, NULL);
		920	}
		921
		922	/* There are probably better ways to do this, such as an
		923	* init-designated function to register chipids and createcontext
		924	* functions.
		925	*/
		926	extern bool
		927	i830CreateContext(int api,
		928	const struct gl_config *mesaVis,
		929	__DRIcontext *driContextPriv,
		930	unsigned major_version,
		931	unsigned minor_version,
		932	uint32_t flags,
		933	unsigned *error,
		934	void *sharedContextPrivate);
		935
		936	extern bool
		937	i915CreateContext(int api,
		938	const struct gl_config *mesaVis,
		939	__DRIcontext *driContextPriv,
		940	unsigned major_version,
		941	unsigned minor_version,
		942	uint32_t flags,
		943	unsigned *error,
		944	void *sharedContextPrivate);
		945
		946	static GLboolean
		947	intelCreateContext(gl_api api,
		948	const struct gl_config * mesaVis,
		949	__DRIcontext * driContextPriv,
		950	unsigned major_version,
		951	unsigned minor_version,
		952	uint32_t flags,
		953	bool notify_reset,
		954	unsigned *error,
		955	void *sharedContextPrivate)
		956	{
		957	bool success = false;
		958
		959	__DRIscreen *sPriv = driContextPriv->driScreenPriv;
		960	struct intel_screen *intelScreen = sPriv->driverPrivate;
		961
		962	if (flags & ~__DRI_CTX_FLAG_DEBUG) {
		963	*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
		964	return false;
		965	}
		966
		967	if (notify_reset) {
		968	*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
		969	return false;
		970	}
		971
		972	if (IS_GEN3(intelScreen->deviceID)) {
		973	success = i915CreateContext(api, mesaVis, driContextPriv,
		974	major_version, minor_version, flags,
		975	error, sharedContextPrivate);
		976	} else {
		977	intelScreen->no_vbo = true;
		978	success = i830CreateContext(api, mesaVis, driContextPriv,
		979	major_version, minor_version, flags,
		980	error, sharedContextPrivate);
		981	}
		982
		983	if (success)
		984	return true;
		985
		986	if (driContextPriv->driverPrivate != NULL)
		987	intelDestroyContext(driContextPriv);
		988
		989	return false;
		990	}
		991
		992	static bool
		993	intel_init_bufmgr(struct intel_screen *intelScreen)
		994	{
		995	__DRIscreen *spriv = intelScreen->driScrnPriv;
		996
		997	intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
		998
		999	intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
		1000	if (intelScreen->bufmgr == NULL) {
		1001	fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
		1002	__func__, __LINE__);
		1003	return false;
		1004	}
		1005
		1006	drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
		1007
		1008	if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
		1009	fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
		1010	return false;
		1011	}
		1012
		1013	return true;
		1014	}
		1015
		1016	static bool
		1017	intel_detect_swizzling(struct intel_screen *screen)
		1018	{
		1019	drm_intel_bo *buffer;
		1020	unsigned long flags = 0;
		1021	unsigned long aligned_pitch;
		1022	uint32_t tiling = I915_TILING_X;
		1023	uint32_t swizzle_mode = 0;
		1024
		1025	buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
		1026	64, 64, 4,
		1027	&tiling, &aligned_pitch, flags);
		1028	if (buffer == NULL)
		1029	return false;
		1030
		1031	drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
		1032	drm_intel_bo_unreference(buffer);
		1033
		1034	if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
		1035	return false;
		1036	else
		1037	return true;
		1038	}
		1039
		1040	static __DRIconfig**
		1041	intel_screen_make_configs(__DRIscreen *dri_screen)
		1042	{
		1043	static const mesa_format formats[] = {
		1044	MESA_FORMAT_B5G6R5_UNORM,
		1045	MESA_FORMAT_B8G8R8A8_UNORM
		1046	};
		1047
		1048	/* GLX_SWAP_COPY_OML is not supported due to page flipping. */
		1049	static const GLenum back_buffer_modes[] = {
		1050	GLX_SWAP_UNDEFINED_OML, GLX_NONE,
		1051	};
		1052
		1053	static const uint8_t singlesample_samples[1] = {0};
		1054
		1055	uint8_t depth_bits[4], stencil_bits[4];
		1056	__DRIconfig **configs = NULL;
		1057
		1058	/* Generate singlesample configs without accumulation buffer. */
		1059	for (int i = 0; i < ARRAY_SIZE(formats); i++) {
		1060	__DRIconfig **new_configs;
		1061	int num_depth_stencil_bits = 2;
		1062
		1063	/* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
		1064	* buffer that has a different number of bits per pixel than the color
		1065	* buffer.
		1066	*/
		1067	depth_bits[0] = 0;
		1068	stencil_bits[0] = 0;
		1069
		1070	if (formats[i] == MESA_FORMAT_B5G6R5_UNORM) {
		1071	depth_bits[1] = 16;
		1072	stencil_bits[1] = 0;
		1073	} else {
		1074	depth_bits[1] = 24;
		1075	stencil_bits[1] = 8;
		1076	}
		1077
		1078	new_configs = driCreateConfigs(formats[i],
		1079	depth_bits,
		1080	stencil_bits,
		1081	num_depth_stencil_bits,
		1082	back_buffer_modes, 2,
		1083	singlesample_samples, 1,
		1084	false);
		1085	configs = driConcatConfigs(configs, new_configs);
		1086	}
		1087
		1088	/* Generate the minimum possible set of configs that include an
		1089	* accumulation buffer.
		1090	*/
		1091	for (int i = 0; i < ARRAY_SIZE(formats); i++) {
		1092	__DRIconfig **new_configs;
		1093
		1094	if (formats[i] == MESA_FORMAT_B5G6R5_UNORM) {
		1095	depth_bits[0] = 16;
		1096	stencil_bits[0] = 0;
		1097	} else {
		1098	depth_bits[0] = 24;
		1099	stencil_bits[0] = 8;
		1100	}
		1101
		1102	new_configs = driCreateConfigs(formats[i],
		1103	depth_bits, stencil_bits, 1,
		1104	back_buffer_modes, 1,
		1105	singlesample_samples, 1,
		1106	true);
		1107	configs = driConcatConfigs(configs, new_configs);
		1108	}
		1109
		1110	if (configs == NULL) {
		1111	fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
		1112	__LINE__);
		1113	return NULL;
		1114	}
		1115
		1116	return configs;
		1117	}
		1118
		1119	static void
		1120	set_max_gl_versions(struct intel_screen *screen)
		1121	{
		1122	__DRIscreen *psp = screen->driScrnPriv;
		1123
		1124	switch (screen->gen) {
		1125	case 3:
		1126	psp->max_gl_core_version = 0;
		1127	psp->max_gl_es1_version = 11;
		1128	psp->max_gl_compat_version = 21;
		1129	psp->max_gl_es2_version = 20;
		1130	break;
		1131	case 2:
		1132	psp->max_gl_core_version = 0;
		1133	psp->max_gl_compat_version = 13;
		1134	psp->max_gl_es1_version = 11;
		1135	psp->max_gl_es2_version = 0;
		1136	break;
		1137	default:
		1138	assert(!"unrecognized intel_screen::gen");
		1139	break;
		1140	}
		1141	}
		1142
		1143	/**
		1144	* This is the driver specific part of the createNewScreen entry point.
		1145	* Called when using DRI2.
		1146	*
		1147	* \return the struct gl_config supported by this driver
		1148	*/
		1149	static const
		1150	__DRIconfig *intelInitScreen2(__DRIscreen psp)
		1151	{
		1152	struct intel_screen *intelScreen;
		1153
		1154	if (psp->image.loader) {
		1155	} else if (psp->dri2.loader->base.version <= 2 \|\|
		1156	psp->dri2.loader->getBuffersWithFormat == NULL) {
		1157	fprintf(stderr,
		1158	"\nERROR! DRI2 loader with getBuffersWithFormat() "
		1159	"support required\n");
		1160	return false;
		1161	}
		1162
		1163	/* Allocate the private area */
		1164	intelScreen = calloc(1, sizeof *intelScreen);
		1165	if (!intelScreen) {
		1166	fprintf(stderr, "\nERROR! Allocating private area failed\n");
		1167	return false;
		1168	}
		1169	/* parse information in __driConfigOptions */
		1170	driParseOptionInfo(&intelScreen->optionCache, i915_config_options.xml);
		1171
		1172	intelScreen->driScrnPriv = psp;
		1173	psp->driverPrivate = (void *) intelScreen;
		1174
		1175	if (!intel_init_bufmgr(intelScreen))
		1176	return false;
		1177
		1178	intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
		1179
		1180	if (IS_GEN3(intelScreen->deviceID)) {
		1181	intelScreen->gen = 3;
		1182	} else {
		1183	intelScreen->gen = 2;
		1184	}
		1185
		1186	intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
		1187
		1188	set_max_gl_versions(intelScreen);
		1189
		1190	psp->extensions = intelScreenExtensions;
		1191
		1192	return (const __DRIconfig**) intel_screen_make_configs(psp);
		1193	}
		1194
		1195	struct intel_buffer {
		1196	__DRIbuffer base;
		1197	struct intel_region *region;
		1198	};
		1199
		1200	static __DRIbuffer *
		1201	intelAllocateBuffer(__DRIscreen *screen,
		1202	unsigned attachment, unsigned format,
		1203	int width, int height)
		1204	{
		1205	struct intel_buffer *intelBuffer;
		1206	struct intel_screen *intelScreen = screen->driverPrivate;
		1207
		1208	assert(attachment == __DRI_BUFFER_FRONT_LEFT \|\|
		1209	attachment == __DRI_BUFFER_BACK_LEFT);
		1210
		1211	intelBuffer = calloc(1, sizeof *intelBuffer);
		1212	if (intelBuffer == NULL)
		1213	return NULL;
		1214
		1215	/* The front and back buffers are color buffers, which are X tiled. */
		1216	intelBuffer->region = intel_region_alloc(intelScreen,
		1217	I915_TILING_X,
		1218	format / 8,
		1219	width,
		1220	height,
		1221	true);
		1222
		1223	if (intelBuffer->region == NULL) {
		1224	free(intelBuffer);
		1225	return NULL;
		1226	}
		1227
		1228	intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
		1229
		1230	intelBuffer->base.attachment = attachment;
		1231	intelBuffer->base.cpp = intelBuffer->region->cpp;
		1232	intelBuffer->base.pitch = intelBuffer->region->pitch;
		1233
		1234	return &intelBuffer->base;
		1235	}
		1236
		1237	static void
		1238	intelReleaseBuffer(__DRIscreen screen, __DRIbuffer buffer)
		1239	{
		1240	struct intel_buffer intelBuffer = (struct intel_buffer ) buffer;
		1241
		1242	intel_region_release(&intelBuffer->region);
		1243	free(intelBuffer);
		1244	}
		1245
		1246
		1247	static const struct __DriverAPIRec i915_driver_api = {
		1248	.InitScreen = intelInitScreen2,
		1249	.DestroyScreen = intelDestroyScreen,
		1250	.CreateContext = intelCreateContext,
		1251	.DestroyContext = intelDestroyContext,
		1252	.CreateBuffer = intelCreateBuffer,
		1253	.DestroyBuffer = intelDestroyBuffer,
		1254	.MakeCurrent = intelMakeCurrent,
		1255	.UnbindContext = intelUnbindContext,
		1256	.AllocateBuffer = intelAllocateBuffer,
		1257	.ReleaseBuffer = intelReleaseBuffer
		1258	};
		1259
		1260	static const struct __DRIDriverVtableExtensionRec i915_vtable = {
		1261	.base = { __DRI_DRIVER_VTABLE, 1 },
		1262	.vtable = &i915_driver_api,
		1263	};
		1264
		1265	/* This is the table of extensions that the loader will dlsym() for. */
		1266	static const __DRIextension *i915_driver_extensions[] = {
		1267	&driCoreExtension.base,
		1268	&driImageDriverExtension.base,
		1269	&driDRI2Extension.base,
		1270	&i915_vtable.base,
		1271	&i915_config_options.base,
		1272	NULL
		1273	};
		1274
		1275	PUBLIC const __DRIextension **__driDriverGetExtensions_i915(void)
		1276	{
		1277	globalDriverAPI = &i915_driver_api;
		1278
		1279	return i915_driver_extensions;
		1280	}

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(root)/contrib/sdk/sources/Mesa/mesa-10.6.0/src/mesa/drivers/dri/i915/intel_screen.c – Rev 5568