1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 TUNGSTEN GRAPHICS 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.
26 **************************************************************************/
29 #include "main/glheader.h"
30 #include "main/context.h"
31 #include "main/extensions.h"
32 #include "main/fbobject.h"
33 #include "main/framebuffer.h"
34 #include "main/imports.h"
35 #include "main/points.h"
37 #include "swrast/swrast.h"
38 #include "swrast_setup/swrast_setup.h"
40 #include "drivers/common/driverfuncs.h"
41 #include "drivers/common/meta.h"
43 #include "intel_chipset.h"
44 #include "intel_buffers.h"
45 #include "intel_tex.h"
46 #include "intel_batchbuffer.h"
47 #include "intel_clear.h"
48 #include "intel_extensions.h"
49 #include "intel_pixel.h"
50 #include "intel_regions.h"
51 #include "intel_buffer_objects.h"
52 #include "intel_fbo.h"
53 #include "intel_bufmgr.h"
54 #include "intel_screen.h"
56 #include "drirenderbuffer.h"
61 int INTEL_DEBUG = (0);
65 #define DRIVER_DATE "20100330 DEVELOPMENT"
66 #define DRIVER_DATE_GEM "GEM " DRIVER_DATE
69 static const GLubyte *
70 intelGetString(struct gl_context * ctx, GLenum name)
72 const struct intel_context *const intel = intel_context(ctx);
74 static char buffer[128];
78 return (GLubyte *) "Tungsten Graphics, Inc";
82 switch (intel->intelScreen->deviceID) {
84 chipset = "Intel(R) 845G";
87 chipset = "Intel(R) 830M";
89 case PCI_CHIP_I855_GM:
90 chipset = "Intel(R) 852GM/855GM";
93 chipset = "Intel(R) 865G";
96 chipset = "Intel(R) 915G";
98 case PCI_CHIP_E7221_G:
99 chipset = "Intel (R) E7221G (i915)";
101 case PCI_CHIP_I915_GM:
102 chipset = "Intel(R) 915GM";
104 case PCI_CHIP_I945_G:
105 chipset = "Intel(R) 945G";
107 case PCI_CHIP_I945_GM:
108 chipset = "Intel(R) 945GM";
110 case PCI_CHIP_I945_GME:
111 chipset = "Intel(R) 945GME";
114 chipset = "Intel(R) G33";
117 chipset = "Intel(R) Q35";
120 chipset = "Intel(R) Q33";
122 case PCI_CHIP_IGD_GM:
124 chipset = "Intel(R) IGD";
126 case PCI_CHIP_I965_Q:
127 chipset = "Intel(R) 965Q";
129 case PCI_CHIP_I965_G:
130 case PCI_CHIP_I965_G_1:
131 chipset = "Intel(R) 965G";
133 case PCI_CHIP_I946_GZ:
134 chipset = "Intel(R) 946GZ";
136 case PCI_CHIP_I965_GM:
137 chipset = "Intel(R) 965GM";
139 case PCI_CHIP_I965_GME:
140 chipset = "Intel(R) 965GME/GLE";
142 case PCI_CHIP_GM45_GM:
143 chipset = "Mobile IntelĀ® GM45 Express Chipset";
145 case PCI_CHIP_IGD_E_G:
146 chipset = "Intel(R) Integrated Graphics Device";
149 chipset = "Intel(R) G45/G43";
152 chipset = "Intel(R) Q45/Q43";
155 chipset = "Intel(R) G41";
158 case PCI_CHIP_B43_G1:
159 chipset = "Intel(R) B43";
162 chipset = "Intel(R) Ironlake Desktop";
165 chipset = "Intel(R) Ironlake Mobile";
167 case PCI_CHIP_SANDYBRIDGE_GT1:
168 case PCI_CHIP_SANDYBRIDGE_GT2:
169 case PCI_CHIP_SANDYBRIDGE_GT2_PLUS:
170 chipset = "Intel(R) Sandybridge Desktop";
172 case PCI_CHIP_SANDYBRIDGE_M_GT1:
173 case PCI_CHIP_SANDYBRIDGE_M_GT2:
174 case PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS:
175 chipset = "Intel(R) Sandybridge Mobile";
177 case PCI_CHIP_SANDYBRIDGE_S:
178 chipset = "Intel(R) Sandybridge Server";
181 chipset = "Unknown Intel Chipset";
185 (void) driGetRendererString(buffer, chipset, DRIVER_DATE_GEM, 0);
186 return (GLubyte *) buffer;
194 intel_flush_front(struct gl_context *ctx)
196 struct intel_context *intel = intel_context(ctx);
197 __DRIcontext *driContext = intel->driContext;
198 __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
200 if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
201 if (screen->dri2.loader &&
202 (screen->dri2.loader->base.version >= 2)
203 && (screen->dri2.loader->flushFrontBuffer != NULL) &&
204 driContext->driDrawablePriv &&
205 driContext->driDrawablePriv->loaderPrivate) {
206 (*screen->dri2.loader->flushFrontBuffer)(driContext->driDrawablePriv,
207 driContext->driDrawablePriv->loaderPrivate);
209 /* We set the dirty bit in intel_prepare_render() if we're
210 * front buffer rendering once we get there.
212 intel->front_buffer_dirty = GL_FALSE;
218 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
220 return _mesa_get_format_bytes(rb->Base.Format) * 8;
224 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
226 struct gl_framebuffer *fb = drawable->driverPrivate;
227 struct intel_renderbuffer *rb;
228 struct intel_region *region, *depth_region;
229 struct intel_context *intel = context->driverPrivate;
230 struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
231 __DRIbuffer *buffers = NULL;
234 unsigned int attachments[10];
235 const char *region_name;
237 /* If we're rendering to the fake front buffer, make sure all the
238 * pending drawing has landed on the real front buffer. Otherwise
239 * when we eventually get to DRI2GetBuffersWithFormat the stale
240 * real front buffer contents will get copied to the new fake front
243 if (intel->is_front_buffer_rendering) {
244 intel_flush(&intel->ctx);
245 intel_flush_front(&intel->ctx);
248 /* Set this up front, so that in case our buffers get invalidated
249 * while we're getting new buffers, we don't clobber the stamp and
250 * thus ignore the invalidate. */
251 drawable->lastStamp = drawable->dri2.stamp;
253 if (unlikely(INTEL_DEBUG & DEBUG_DRI))
254 fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
256 screen = intel->intelScreen->driScrnPriv;
258 if (screen->dri2.loader
259 && (screen->dri2.loader->base.version > 2)
260 && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
262 front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
263 back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
264 depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
265 stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
268 if ((intel->is_front_buffer_rendering ||
269 intel->is_front_buffer_reading ||
270 !back_rb) && front_rb) {
271 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
272 attachments[i++] = intel_bits_per_pixel(front_rb);
276 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
277 attachments[i++] = intel_bits_per_pixel(back_rb);
280 if ((depth_rb != NULL) && (stencil_rb != NULL)) {
281 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
282 attachments[i++] = intel_bits_per_pixel(depth_rb);
283 } else if (depth_rb != NULL) {
284 attachments[i++] = __DRI_BUFFER_DEPTH;
285 attachments[i++] = intel_bits_per_pixel(depth_rb);
286 } else if (stencil_rb != NULL) {
287 attachments[i++] = __DRI_BUFFER_STENCIL;
288 attachments[i++] = intel_bits_per_pixel(stencil_rb);
292 (*screen->dri2.loader->getBuffersWithFormat)(drawable,
297 drawable->loaderPrivate);
298 } else if (screen->dri2.loader) {
300 if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
301 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
302 if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
303 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
304 if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
305 attachments[i++] = __DRI_BUFFER_DEPTH;
306 if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
307 attachments[i++] = __DRI_BUFFER_STENCIL;
309 buffers = (*screen->dri2.loader->getBuffers)(drawable,
314 drawable->loaderPrivate);
324 drawable->numClipRects = 1;
325 drawable->pClipRects[0].x1 = 0;
326 drawable->pClipRects[0].y1 = 0;
327 drawable->pClipRects[0].x2 = drawable->w;
328 drawable->pClipRects[0].y2 = drawable->h;
329 drawable->numBackClipRects = 1;
330 drawable->pBackClipRects[0].x1 = 0;
331 drawable->pBackClipRects[0].y1 = 0;
332 drawable->pBackClipRects[0].x2 = drawable->w;
333 drawable->pBackClipRects[0].y2 = drawable->h;
336 for (i = 0; i < count; i++) {
337 switch (buffers[i].attachment) {
338 case __DRI_BUFFER_FRONT_LEFT:
339 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
340 region_name = "dri2 front buffer";
343 case __DRI_BUFFER_FAKE_FRONT_LEFT:
344 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
345 region_name = "dri2 fake front buffer";
348 case __DRI_BUFFER_BACK_LEFT:
349 rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
350 region_name = "dri2 back buffer";
353 case __DRI_BUFFER_DEPTH:
354 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
355 region_name = "dri2 depth buffer";
358 case __DRI_BUFFER_DEPTH_STENCIL:
359 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
360 region_name = "dri2 depth / stencil buffer";
363 case __DRI_BUFFER_STENCIL:
364 rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
365 region_name = "dri2 stencil buffer";
368 case __DRI_BUFFER_ACCUM:
371 "unhandled buffer attach event, attachment type %d\n",
372 buffers[i].attachment);
379 if (rb->region && rb->region->name == buffers[i].name)
382 if (unlikely(INTEL_DEBUG & DEBUG_DRI))
384 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
385 buffers[i].name, buffers[i].attachment,
386 buffers[i].cpp, buffers[i].pitch);
388 if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
389 if (unlikely(INTEL_DEBUG & DEBUG_DRI))
390 fprintf(stderr, "(reusing depth buffer as stencil)\n");
391 intel_region_reference(®ion, depth_region);
394 region = intel_region_alloc_for_handle(intel->intelScreen,
398 buffers[i].pitch / buffers[i].cpp,
402 if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
403 depth_region = region;
405 intel_renderbuffer_set_region(intel, rb, region);
406 intel_region_release(®ion);
408 if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
409 rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
411 struct intel_region *stencil_region = NULL;
413 if (rb->region && rb->region->name == buffers[i].name)
416 intel_region_reference(&stencil_region, region);
417 intel_renderbuffer_set_region(intel, rb, stencil_region);
418 intel_region_release(&stencil_region);
423 driUpdateFramebufferSize(&intel->ctx, drawable);
427 * intel_prepare_render should be called anywhere that curent read/drawbuffer
431 intel_prepare_render(struct intel_context *intel)
433 __DRIcontext *driContext = intel->driContext;
434 __DRIdrawable *drawable;
436 drawable = driContext->driDrawablePriv;
437 if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
438 if (drawable->lastStamp != drawable->dri2.stamp)
439 intel_update_renderbuffers(driContext, drawable);
440 intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
441 driContext->dri2.draw_stamp = drawable->dri2.stamp;
444 drawable = driContext->driReadablePriv;
445 if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
446 if (drawable->lastStamp != drawable->dri2.stamp)
447 intel_update_renderbuffers(driContext, drawable);
448 driContext->dri2.read_stamp = drawable->dri2.stamp;
451 /* If we're currently rendering to the front buffer, the rendering
452 * that will happen next will probably dirty the front buffer. So
453 * mark it as dirty here.
455 if (intel->is_front_buffer_rendering)
456 intel->front_buffer_dirty = GL_TRUE;
458 /* Wait for the swapbuffers before the one we just emitted, so we
459 * don't get too many swaps outstanding for apps that are GPU-heavy
462 * We're using intelDRI2Flush (called from the loader before
463 * swapbuffer) and glFlush (for front buffer rendering) as the
464 * indicator that a frame is done and then throttle when we get
465 * here as we prepare to render the next frame. At this point for
466 * round trips for swap/copy and getting new buffers are done and
467 * we'll spend less time waiting on the GPU.
469 * Unfortunately, we don't have a handle to the batch containing
470 * the swap, and getting our hands on that doesn't seem worth it,
471 * so we just us the first batch we emitted after the last swap.
473 if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
474 drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
475 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
476 intel->first_post_swapbuffers_batch = NULL;
477 intel->need_throttle = GL_FALSE;
482 intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
484 struct intel_context *intel = intel_context(ctx);
485 __DRIcontext *driContext = intel->driContext;
487 if (intel->saved_viewport)
488 intel->saved_viewport(ctx, x, y, w, h);
490 if (!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
491 dri2InvalidateDrawable(driContext->driDrawablePriv);
492 dri2InvalidateDrawable(driContext->driReadablePriv);
496 static const struct dri_debug_control debug_control[] = {
497 { "tex", DEBUG_TEXTURE},
498 { "state", DEBUG_STATE},
499 { "ioctl", DEBUG_IOCTL},
500 { "blit", DEBUG_BLIT},
501 { "mip", DEBUG_MIPTREE},
502 { "fall", DEBUG_FALLBACKS},
503 { "verb", DEBUG_VERBOSE},
504 { "bat", DEBUG_BATCH},
505 { "pix", DEBUG_PIXEL},
506 { "buf", DEBUG_BUFMGR},
507 { "reg", DEBUG_REGION},
510 { "sync", DEBUG_SYNC},
511 { "prim", DEBUG_PRIMS },
512 { "vert", DEBUG_VERTS },
513 { "dri", DEBUG_DRI },
515 { "san", DEBUG_SANITY },
516 { "sleep", DEBUG_SLEEP },
517 { "stats", DEBUG_STATS },
518 { "tile", DEBUG_TILE },
519 { "sing", DEBUG_SINGLE_THREAD },
520 { "thre", DEBUG_SINGLE_THREAD },
522 { "urb", DEBUG_URB },
524 { "clip", DEBUG_CLIP },
530 intelInvalidateState(struct gl_context * ctx, GLuint new_state)
532 struct intel_context *intel = intel_context(ctx);
534 _swrast_InvalidateState(ctx, new_state);
535 _swsetup_InvalidateState(ctx, new_state);
536 _vbo_InvalidateState(ctx, new_state);
537 _tnl_InvalidateState(ctx, new_state);
538 _tnl_invalidate_vertex_state(ctx, new_state);
540 intel->NewGLState |= new_state;
542 if (intel->vtbl.invalidate_state)
543 intel->vtbl.invalidate_state( intel, new_state );
547 intel_flush(struct gl_context *ctx)
549 struct intel_context *intel = intel_context(ctx);
555 INTEL_FIREVERTICES(intel);
557 if (intel->batch->map != intel->batch->ptr)
558 intel_batchbuffer_flush(intel->batch);
562 intel_glFlush(struct gl_context *ctx)
564 struct intel_context *intel = intel_context(ctx);
567 intel_flush_front(ctx);
568 intel->need_throttle = GL_TRUE;
572 intelFinish(struct gl_context * ctx)
574 struct gl_framebuffer *fb = ctx->DrawBuffer;
578 intel_flush_front(ctx);
580 for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
581 struct intel_renderbuffer *irb;
583 irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
585 if (irb && irb->region)
586 drm_intel_bo_wait_rendering(irb->region->buffer);
588 if (fb->_DepthBuffer) {
589 /* XXX: Wait on buffer idle */
594 intelInitDriverFunctions(struct dd_function_table *functions)
596 _mesa_init_driver_functions(functions);
598 functions->Flush = intel_glFlush;
599 functions->Finish = intelFinish;
600 functions->GetString = intelGetString;
601 functions->UpdateState = intelInvalidateState;
603 intelInitTextureFuncs(functions);
604 intelInitTextureImageFuncs(functions);
605 intelInitTextureSubImageFuncs(functions);
606 intelInitTextureCopyImageFuncs(functions);
607 intelInitStateFuncs(functions);
608 intelInitClearFuncs(functions);
609 intelInitBufferFuncs(functions);
610 intelInitPixelFuncs(functions);
611 intelInitBufferObjectFuncs(functions);
612 intel_init_syncobj_functions(functions);
617 intelInitContext(struct intel_context *intel,
619 const struct gl_config * mesaVis,
620 __DRIcontext * driContextPriv,
621 void *sharedContextPrivate,
622 struct dd_function_table *functions)
624 struct gl_context *ctx = &intel->ctx;
625 struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
626 __DRIscreen *sPriv = driContextPriv->driScreenPriv;
627 struct intel_screen *intelScreen = sPriv->private;
629 struct gl_config visual;
631 /* we can't do anything without a connection to the device */
632 if (intelScreen->bufmgr == NULL)
635 /* Can't rely on invalidate events, fall back to glViewport hack */
636 if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
637 intel->saved_viewport = functions->Viewport;
638 functions->Viewport = intel_viewport;
641 if (mesaVis == NULL) {
642 memset(&visual, 0, sizeof visual);
646 if (!_mesa_initialize_context_for_api(&intel->ctx, api, mesaVis, shareCtx,
647 functions, (void *) intel)) {
648 printf("%s: failed to init mesa context\n", __FUNCTION__);
652 driContextPriv->driverPrivate = intel;
653 intel->intelScreen = intelScreen;
654 intel->driContext = driContextPriv;
655 intel->driFd = sPriv->fd;
657 intel->has_xrgb_textures = GL_TRUE;
658 if (IS_GEN6(intel->intelScreen->deviceID)) {
660 intel->needs_ff_sync = GL_TRUE;
661 intel->has_luminance_srgb = GL_TRUE;
662 } else if (IS_GEN5(intel->intelScreen->deviceID)) {
664 intel->needs_ff_sync = GL_TRUE;
665 intel->has_luminance_srgb = GL_TRUE;
666 } else if (IS_965(intel->intelScreen->deviceID)) {
668 if (IS_G4X(intel->intelScreen->deviceID)) {
669 intel->has_luminance_srgb = GL_TRUE;
670 intel->is_g4x = GL_TRUE;
672 } else if (IS_9XX(intel->intelScreen->deviceID)) {
674 if (IS_945(intel->intelScreen->deviceID)) {
675 intel->is_945 = GL_TRUE;
679 if (intel->intelScreen->deviceID == PCI_CHIP_I830_M ||
680 intel->intelScreen->deviceID == PCI_CHIP_845_G) {
681 intel->has_xrgb_textures = GL_FALSE;
685 driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
686 sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915");
687 if (intelScreen->deviceID == PCI_CHIP_I865_G)
688 intel->maxBatchSize = 4096;
690 intel->maxBatchSize = BATCH_SZ;
692 intel->bufmgr = intelScreen->bufmgr;
694 bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
695 switch (bo_reuse_mode) {
696 case DRI_CONF_BO_REUSE_DISABLED:
698 case DRI_CONF_BO_REUSE_ALL:
699 intel_bufmgr_gem_enable_reuse(intel->bufmgr);
703 /* This doesn't yet catch all non-conformant rendering, but it's a
706 if (getenv("INTEL_STRICT_CONFORMANCE")) {
707 unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
709 intel->conformance_mode = value;
712 intel->conformance_mode = 1;
716 if (intel->conformance_mode > 0) {
717 ctx->Const.MinLineWidth = 1.0;
718 ctx->Const.MinLineWidthAA = 1.0;
719 ctx->Const.MaxLineWidth = 1.0;
720 ctx->Const.MaxLineWidthAA = 1.0;
721 ctx->Const.LineWidthGranularity = 1.0;
724 ctx->Const.MinLineWidth = 1.0;
725 ctx->Const.MinLineWidthAA = 1.0;
726 ctx->Const.MaxLineWidth = 5.0;
727 ctx->Const.MaxLineWidthAA = 5.0;
728 ctx->Const.LineWidthGranularity = 0.5;
731 ctx->Const.MinPointSize = 1.0;
732 ctx->Const.MinPointSizeAA = 1.0;
733 ctx->Const.MaxPointSize = 255.0;
734 ctx->Const.MaxPointSizeAA = 3.0;
735 ctx->Const.PointSizeGranularity = 1.0;
737 ctx->Const.MaxSamples = 1.0;
739 /* reinitialize the context point state.
740 * It depend on constants in __struct gl_contextRec::Const
742 _mesa_init_point(ctx);
744 meta_init_metaops(ctx, &intel->meta);
745 if (intel->gen >= 4) {
746 if (MAX_WIDTH > 8192)
747 ctx->Const.MaxRenderbufferSize = 8192;
749 if (MAX_WIDTH > 2048)
750 ctx->Const.MaxRenderbufferSize = 2048;
753 /* Initialize the software rasterizer and helper modules. */
754 _swrast_CreateContext(ctx);
755 _vbo_CreateContext(ctx);
756 _tnl_CreateContext(ctx);
757 _swsetup_CreateContext(ctx);
759 /* Configure swrast to match hardware characteristics: */
760 _swrast_allow_pixel_fog(ctx, GL_FALSE);
761 _swrast_allow_vertex_fog(ctx, GL_TRUE);
763 _mesa_meta_init(ctx);
765 intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
766 intel->hw_stipple = 1;
768 /* XXX FBO: this doesn't seem to be used anywhere */
769 switch (mesaVis->depthBits) {
770 case 0: /* what to do in this case? */
772 intel->polygon_offset_scale = 1.0;
775 intel->polygon_offset_scale = 2.0; /* req'd to pass glean */
783 intel->polygon_offset_scale /= 0xffff;
785 intel->RenderIndex = ~0;
789 intelInitExtensions(ctx);
794 intelInitExtensionsES2(ctx);
798 INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
799 if (INTEL_DEBUG & DEBUG_BUFMGR)
800 dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
802 intel->batch = intel_batchbuffer_alloc(intel);
804 intel_fbo_init(intel);
806 if (intel->ctx.Mesa_DXTn) {
807 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
808 _mesa_enable_extension(ctx, "GL_S3_s3tc");
810 else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
811 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
813 intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
815 intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
817 intel->prim.primitive = ~0;
819 /* Force all software fallbacks */
820 if (driQueryOptionb(&intel->optionCache, "no_rast")) {
821 fprintf(stderr, "disabling 3D rasterization\n");
825 if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
826 fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
827 intel->always_flush_batch = 1;
830 if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
831 fprintf(stderr, "flushing GPU caches before/after each draw call\n");
832 intel->always_flush_cache = 1;
839 intelDestroyContext(__DRIcontext * driContextPriv)
841 struct intel_context *intel =
842 (struct intel_context *) driContextPriv->driverPrivate;
844 assert(intel); /* should never be null */
846 INTEL_FIREVERTICES(intel);
848 _mesa_meta_free(&intel->ctx);
850 meta_destroy_metaops(&intel->meta);
852 intel->vtbl.destroy(intel);
854 _swsetup_DestroyContext(&intel->ctx);
855 _tnl_DestroyContext(&intel->ctx);
856 _vbo_DestroyContext(&intel->ctx);
858 _swrast_DestroyContext(&intel->ctx);
859 intel->Fallback = 0x0; /* don't call _swrast_Flush later */
861 intel_batchbuffer_free(intel->batch);
864 free(intel->prim.vb);
865 intel->prim.vb = NULL;
866 drm_intel_bo_unreference(intel->prim.vb_bo);
867 intel->prim.vb_bo = NULL;
868 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
869 intel->first_post_swapbuffers_batch = NULL;
871 driDestroyOptionCache(&intel->optionCache);
873 /* free the Mesa context */
874 _mesa_free_context_data(&intel->ctx);
877 driContextPriv->driverPrivate = NULL;
882 intelUnbindContext(__DRIcontext * driContextPriv)
884 /* Unset current context and dispath table */
885 _mesa_make_current(NULL, NULL, NULL);
891 intelMakeCurrent(__DRIcontext * driContextPriv,
892 __DRIdrawable * driDrawPriv,
893 __DRIdrawable * driReadPriv)
895 struct intel_context *intel;
896 GET_CURRENT_CONTEXT(curCtx);
899 intel = (struct intel_context *) driContextPriv->driverPrivate;
903 /* According to the glXMakeCurrent() man page: "Pending commands to
904 * the previous context, if any, are flushed before it is released."
905 * But only flush if we're actually changing contexts.
907 if (intel_context(curCtx) && intel_context(curCtx) != intel) {
911 if (driContextPriv) {
912 struct gl_framebuffer *fb, *readFb;
914 if (driDrawPriv == NULL && driReadPriv == NULL) {
915 fb = _mesa_get_incomplete_framebuffer();
916 readFb = _mesa_get_incomplete_framebuffer();
918 fb = driDrawPriv->driverPrivate;
919 readFb = driReadPriv->driverPrivate;
920 driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
921 driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
924 intel_prepare_render(intel);
925 _mesa_make_current(&intel->ctx, fb, readFb);
927 /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
928 * is NULL at that point. We can't call _mesa_makecurrent()
929 * first, since we need the buffer size for the initial
930 * viewport. So just call intel_draw_buffer() again here. */
931 intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
934 _mesa_make_current(NULL, NULL, NULL);