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
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/points.h"
35 #include "main/renderbuffer.h"
36
37 #include "swrast/swrast.h"
38 #include "swrast_setup/swrast_setup.h"
39 #include "tnl/tnl.h"
40 #include "drivers/common/driverfuncs.h"
41 #include "drivers/common/meta.h"
42
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"
55 #include "intel_mipmap_tree.h"
56
57 #include "utils.h"
58 #include "util/debug.h"
59 #include "util/ralloc.h"
60 #include "util/u_memory.h"
61
62 int INTEL_DEBUG = (0);
63
64 const char *const i915_vendor_string = "Intel Open Source Technology Center";
65
66 const char *
i915_get_renderer_string(unsigned deviceID)67 i915_get_renderer_string(unsigned deviceID)
68 {
69 const char *chipset;
70 static char buffer[128];
71
72 switch (deviceID) {
73 #undef CHIPSET
74 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
75 #include "pci_ids/i830_pci_ids.h"
76 #include "pci_ids/i915_pci_ids.h"
77 default:
78 chipset = "Unknown Intel Chipset";
79 break;
80 }
81
82 (void) driGetRendererString(buffer, chipset, 0);
83 return buffer;
84 }
85
86 static const GLubyte *
intelGetString(struct gl_context * ctx,GLenum name)87 intelGetString(struct gl_context * ctx, GLenum name)
88 {
89 const struct intel_context *const intel = intel_context(ctx);
90
91 switch (name) {
92 case GL_VENDOR:
93 return (GLubyte *) i915_vendor_string;
94
95 case GL_RENDERER:
96 return
97 (GLubyte *) i915_get_renderer_string(intel->intelScreen->deviceID);
98
99 default:
100 return NULL;
101 }
102 }
103
104 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
105
106 static void
intel_flush_front(struct gl_context * ctx)107 intel_flush_front(struct gl_context *ctx)
108 {
109 struct intel_context *intel = intel_context(ctx);
110 __DRIcontext *driContext = intel->driContext;
111 __DRIdrawable *driDrawable = driContext->driDrawablePriv;
112 __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
113
114 if (intel->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
115 if (flushFront(screen) &&
116 driDrawable &&
117 driDrawable->loaderPrivate) {
118 flushFront(screen)(driDrawable, driDrawable->loaderPrivate);
119
120 /* We set the dirty bit in intel_prepare_render() if we're
121 * front buffer rendering once we get there.
122 */
123 intel->front_buffer_dirty = false;
124 }
125 }
126 }
127
128 static void
129 intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable);
130
131 static unsigned
intel_bits_per_pixel(const struct intel_renderbuffer * rb)132 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
133 {
134 return _mesa_get_format_bytes(intel_rb_format(rb)) * 8;
135 }
136
137 static void
138 intel_query_dri2_buffers(struct intel_context *intel,
139 __DRIdrawable *drawable,
140 __DRIbuffer **buffers,
141 int *count);
142
143 static void
144 intel_process_dri2_buffer(struct intel_context *intel,
145 __DRIdrawable *drawable,
146 __DRIbuffer *buffer,
147 struct intel_renderbuffer *rb,
148 const char *buffer_name);
149
150 static void
intel_update_dri2_buffers(struct intel_context * intel,__DRIdrawable * drawable)151 intel_update_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable)
152 {
153 __DRIbuffer *buffers = NULL;
154 int i, count;
155 const char *region_name;
156 struct intel_renderbuffer *rb;
157 struct gl_framebuffer *fb = drawable->driverPrivate;
158
159 intel_query_dri2_buffers(intel, drawable, &buffers, &count);
160
161 if (buffers == NULL)
162 return;
163
164 for (i = 0; i < count; i++) {
165 switch (buffers[i].attachment) {
166 case __DRI_BUFFER_FRONT_LEFT:
167 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
168 region_name = "dri2 front buffer";
169 break;
170
171 case __DRI_BUFFER_FAKE_FRONT_LEFT:
172 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
173 region_name = "dri2 fake front buffer";
174 break;
175
176 case __DRI_BUFFER_BACK_LEFT:
177 rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
178 region_name = "dri2 back buffer";
179 break;
180
181 case __DRI_BUFFER_DEPTH:
182 case __DRI_BUFFER_HIZ:
183 case __DRI_BUFFER_DEPTH_STENCIL:
184 case __DRI_BUFFER_STENCIL:
185 case __DRI_BUFFER_ACCUM:
186 default:
187 fprintf(stderr,
188 "unhandled buffer attach event, attachment type %d\n",
189 buffers[i].attachment);
190 return;
191 }
192
193 intel_process_dri2_buffer(intel, drawable, &buffers[i], rb, region_name);
194 }
195 }
196
197 void
intel_update_renderbuffers(__DRIcontext * context,__DRIdrawable * drawable)198 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
199 {
200 struct intel_context *intel = context->driverPrivate;
201 __DRIscreen *screen = intel->intelScreen->driScrnPriv;
202
203 /* Set this up front, so that in case our buffers get invalidated
204 * while we're getting new buffers, we don't clobber the stamp and
205 * thus ignore the invalidate. */
206 drawable->lastStamp = drawable->dri2.stamp;
207
208 if (unlikely(INTEL_DEBUG & DEBUG_DRI))
209 fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
210
211 if (screen->image.loader)
212 intel_update_image_buffers(intel, drawable);
213 else
214 intel_update_dri2_buffers(intel, drawable);
215
216 driUpdateFramebufferSize(&intel->ctx, drawable);
217 }
218
219 /**
220 * intel_prepare_render should be called anywhere that curent read/drawbuffer
221 * state is required.
222 */
223 void
intel_prepare_render(struct intel_context * intel)224 intel_prepare_render(struct intel_context *intel)
225 {
226 __DRIcontext *driContext = intel->driContext;
227 __DRIdrawable *drawable;
228
229 drawable = driContext->driDrawablePriv;
230 if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
231 if (drawable->lastStamp != drawable->dri2.stamp)
232 intel_update_renderbuffers(driContext, drawable);
233 intel_draw_buffer(&intel->ctx);
234 driContext->dri2.draw_stamp = drawable->dri2.stamp;
235 }
236
237 drawable = driContext->driReadablePriv;
238 if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
239 if (drawable->lastStamp != drawable->dri2.stamp)
240 intel_update_renderbuffers(driContext, drawable);
241 driContext->dri2.read_stamp = drawable->dri2.stamp;
242 }
243
244 /* If we're currently rendering to the front buffer, the rendering
245 * that will happen next will probably dirty the front buffer. So
246 * mark it as dirty here.
247 */
248 if (_mesa_is_front_buffer_drawing(intel->ctx.DrawBuffer))
249 intel->front_buffer_dirty = true;
250
251 /* Wait for the swapbuffers before the one we just emitted, so we
252 * don't get too many swaps outstanding for apps that are GPU-heavy
253 * but not CPU-heavy.
254 *
255 * We're using intelDRI2Flush (called from the loader before
256 * swapbuffer) and glFlush (for front buffer rendering) as the
257 * indicator that a frame is done and then throttle when we get
258 * here as we prepare to render the next frame. At this point for
259 * round trips for swap/copy and getting new buffers are done and
260 * we'll spend less time waiting on the GPU.
261 *
262 * Unfortunately, we don't have a handle to the batch containing
263 * the swap, and getting our hands on that doesn't seem worth it,
264 * so we just us the first batch we emitted after the last swap.
265 */
266 if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
267 if (!intel->disable_throttling)
268 drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
269 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
270 intel->first_post_swapbuffers_batch = NULL;
271 intel->need_throttle = false;
272 }
273 }
274
275 static void
intel_noninvalidate_viewport(struct gl_context * ctx)276 intel_noninvalidate_viewport(struct gl_context *ctx)
277 {
278 struct intel_context *intel = intel_context(ctx);
279 __DRIcontext *driContext = intel->driContext;
280
281 intelCalcViewport(ctx);
282
283 if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
284 dri2InvalidateDrawable(driContext->driDrawablePriv);
285 dri2InvalidateDrawable(driContext->driReadablePriv);
286 }
287 }
288
289 static void
intel_viewport(struct gl_context * ctx)290 intel_viewport(struct gl_context *ctx)
291 {
292 intelCalcViewport(ctx);
293 }
294
295 static const struct debug_control debug_control[] = {
296 { "tex", DEBUG_TEXTURE},
297 { "state", DEBUG_STATE},
298 { "blit", DEBUG_BLIT},
299 { "mip", DEBUG_MIPTREE},
300 { "fall", DEBUG_PERF},
301 { "perf", DEBUG_PERF},
302 { "bat", DEBUG_BATCH},
303 { "pix", DEBUG_PIXEL},
304 { "buf", DEBUG_BUFMGR},
305 { "reg", DEBUG_REGION},
306 { "fbo", DEBUG_FBO},
307 { "fs", DEBUG_WM },
308 { "sync", DEBUG_SYNC},
309 { "dri", DEBUG_DRI },
310 { "stats", DEBUG_STATS },
311 { "wm", DEBUG_WM },
312 { "aub", DEBUG_AUB },
313 { NULL, 0 }
314 };
315
316
317 static void
intelInvalidateState(struct gl_context * ctx)318 intelInvalidateState(struct gl_context * ctx)
319 {
320 GLuint new_state = ctx->NewState;
321 struct intel_context *intel = intel_context(ctx);
322
323 if (ctx->swrast_context)
324 _swrast_InvalidateState(ctx, new_state);
325
326 intel->NewGLState |= new_state;
327
328 if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))
329 _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
330
331 if (intel->vtbl.invalidate_state)
332 intel->vtbl.invalidate_state( intel, new_state );
333 }
334
335 void
intel_flush_rendering_to_batch(struct gl_context * ctx)336 intel_flush_rendering_to_batch(struct gl_context *ctx)
337 {
338 struct intel_context *intel = intel_context(ctx);
339
340 if (intel->Fallback)
341 _swrast_flush(ctx);
342
343 INTEL_FIREVERTICES(intel);
344 }
345
346 void
_intel_flush(struct gl_context * ctx,const char * file,int line)347 _intel_flush(struct gl_context *ctx, const char *file, int line)
348 {
349 struct intel_context *intel = intel_context(ctx);
350
351 intel_flush_rendering_to_batch(ctx);
352
353 if (intel->batch.used)
354 _intel_batchbuffer_flush(intel, file, line);
355 }
356
357 static void
intel_glFlush(struct gl_context * ctx,unsigned gallium_flush_flags)358 intel_glFlush(struct gl_context *ctx, unsigned gallium_flush_flags)
359 {
360 struct intel_context *intel = intel_context(ctx);
361
362 intel_flush(ctx);
363 intel_flush_front(ctx);
364 if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer))
365 intel->need_throttle = true;
366 }
367
368 void
intelFinish(struct gl_context * ctx)369 intelFinish(struct gl_context * ctx)
370 {
371 struct intel_context *intel = intel_context(ctx);
372
373 intel_flush(ctx);
374 intel_flush_front(ctx);
375
376 if (intel->batch.last_bo)
377 drm_intel_bo_wait_rendering(intel->batch.last_bo);
378 }
379
380 void
intelInitDriverFunctions(struct dd_function_table * functions)381 intelInitDriverFunctions(struct dd_function_table *functions)
382 {
383 _mesa_init_driver_functions(functions);
384 _tnl_init_driver_draw_function(functions);
385
386 functions->Flush = intel_glFlush;
387 functions->Finish = intelFinish;
388 functions->GetString = intelGetString;
389 functions->UpdateState = intelInvalidateState;
390
391 intelInitTextureFuncs(functions);
392 intelInitTextureImageFuncs(functions);
393 intelInitTextureSubImageFuncs(functions);
394 intelInitTextureCopyImageFuncs(functions);
395 intelInitClearFuncs(functions);
396 intelInitBufferFuncs(functions);
397 intelInitPixelFuncs(functions);
398 intelInitBufferObjectFuncs(functions);
399 intel_init_syncobj_functions(functions);
400 }
401
402 bool
intelInitContext(struct intel_context * intel,int api,unsigned major_version,unsigned minor_version,uint32_t flags,const struct gl_config * mesaVis,__DRIcontext * driContextPriv,void * sharedContextPrivate,struct dd_function_table * functions,unsigned * dri_ctx_error)403 intelInitContext(struct intel_context *intel,
404 int api,
405 unsigned major_version,
406 unsigned minor_version,
407 uint32_t flags,
408 const struct gl_config * mesaVis,
409 __DRIcontext * driContextPriv,
410 void *sharedContextPrivate,
411 struct dd_function_table *functions,
412 unsigned *dri_ctx_error)
413 {
414 struct gl_context *ctx = &intel->ctx;
415 struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
416 __DRIscreen *sPriv = driContextPriv->driScreenPriv;
417 struct intel_screen *intelScreen = sPriv->driverPrivate;
418 int bo_reuse_mode;
419
420 /* Can't rely on invalidate events, fall back to glViewport hack */
421 if (!driContextPriv->driScreenPriv->dri2.useInvalidate)
422 functions->Viewport = intel_noninvalidate_viewport;
423 else
424 functions->Viewport = intel_viewport;
425
426 intel->intelScreen = intelScreen;
427
428 if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx,
429 functions)) {
430 *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY;
431 printf("%s: failed to init mesa context\n", __func__);
432 return false;
433 }
434
435 driContextSetFlags(&intel->ctx, flags);
436
437 driContextPriv->driverPrivate = intel;
438 intel->driContext = driContextPriv;
439
440 intel->gen = intelScreen->gen;
441
442 const int devID = intelScreen->deviceID;
443
444 intel->is_945 = IS_945(devID);
445
446 memset(&ctx->TextureFormatSupported,
447 0, sizeof(ctx->TextureFormatSupported));
448
449 driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
450 sPriv->myNum, "i915", NULL, NULL, NULL, 0, NULL, 0);
451 intel->maxBatchSize = 4096;
452
453 /* Estimate the size of the mappable aperture into the GTT. There's an
454 * ioctl to get the whole GTT size, but not one to get the mappable subset.
455 * It turns out it's basically always 256MB, though some ancient hardware
456 * was smaller.
457 */
458 uint32_t gtt_size = 256 * 1024 * 1024;
459 if (intel->gen == 2)
460 gtt_size = 128 * 1024 * 1024;
461
462 /* We don't want to map two objects such that a memcpy between them would
463 * just fault one mapping in and then the other over and over forever. So
464 * we would need to divide the GTT size by 2. Additionally, some GTT is
465 * taken up by things like the framebuffer and the ringbuffer and such, so
466 * be more conservative.
467 */
468 intel->max_gtt_map_object_size = gtt_size / 4;
469
470 intel->bufmgr = intelScreen->bufmgr;
471
472 bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
473 switch (bo_reuse_mode) {
474 case DRI_CONF_BO_REUSE_DISABLED:
475 break;
476 case DRI_CONF_BO_REUSE_ALL:
477 intel_bufmgr_gem_enable_reuse(intel->bufmgr);
478 break;
479 }
480
481 ctx->Const.MinLineWidth = 1.0;
482 ctx->Const.MinLineWidthAA = 1.0;
483 ctx->Const.MaxLineWidth = 7.0;
484 ctx->Const.MaxLineWidthAA = 7.0;
485 ctx->Const.LineWidthGranularity = 0.5;
486
487 ctx->Const.MinPointSize = 1.0;
488 ctx->Const.MinPointSizeAA = 1.0;
489 ctx->Const.MaxPointSize = 255.0;
490 ctx->Const.MaxPointSizeAA = 3.0;
491 ctx->Const.PointSizeGranularity = 1.0;
492
493 ctx->Const.StripTextureBorder = GL_TRUE;
494
495 /* reinitialize the context point state.
496 * It depend on constants in __struct gl_contextRec::Const
497 */
498 _mesa_init_point(ctx);
499
500 ctx->Const.MaxRenderbufferSize = 2048;
501
502 _swrast_CreateContext(ctx);
503 _vbo_CreateContext(ctx, false);
504 if (ctx->swrast_context) {
505 _tnl_CreateContext(ctx);
506 _swsetup_CreateContext(ctx);
507
508 /* Configure swrast to match hardware characteristics: */
509 _swrast_allow_pixel_fog(ctx, false);
510 _swrast_allow_vertex_fog(ctx, true);
511 }
512
513 _mesa_meta_init(ctx);
514
515 intel->hw_stipple = 1;
516
517 intel->RenderIndex = ~0;
518
519 intelInitExtensions(ctx);
520
521 INTEL_DEBUG = parse_debug_string(getenv("INTEL_DEBUG"), debug_control);
522 if (INTEL_DEBUG & DEBUG_BUFMGR)
523 dri_bufmgr_set_debug(intel->bufmgr, true);
524 if (INTEL_DEBUG & DEBUG_PERF)
525 intel->perf_debug = true;
526
527 if (INTEL_DEBUG & DEBUG_AUB)
528 drm_intel_bufmgr_gem_set_aub_dump(intel->bufmgr, true);
529
530 intel_batchbuffer_init(intel);
531
532 intel_fbo_init(intel);
533
534 intel->prim.primitive = ~0;
535
536 /* Force all software fallbacks */
537 if (getenv("INTEL_NO_RAST")) {
538 fprintf(stderr, "disabling 3D rasterization\n");
539 intel->no_rast = 1;
540 }
541
542 if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
543 fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
544 intel->always_flush_batch = 1;
545 }
546
547 if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
548 fprintf(stderr, "flushing GPU caches before/after each draw call\n");
549 intel->always_flush_cache = 1;
550 }
551
552 if (driQueryOptionb(&intel->optionCache, "disable_throttling")) {
553 fprintf(stderr, "disabling flush throttling\n");
554 intel->disable_throttling = 1;
555 }
556
557 return true;
558 }
559
560 void
intelDestroyContext(__DRIcontext * driContextPriv)561 intelDestroyContext(__DRIcontext * driContextPriv)
562 {
563 struct intel_context *intel =
564 (struct intel_context *) driContextPriv->driverPrivate;
565 struct gl_context *ctx = &intel->ctx;
566
567 assert(intel); /* should never be null */
568 if (intel) {
569 INTEL_FIREVERTICES(intel);
570
571 /* Dump a final BMP in case the application doesn't call SwapBuffers */
572 if (INTEL_DEBUG & DEBUG_AUB) {
573 intel_batchbuffer_flush(intel);
574 aub_dump_bmp(&intel->ctx);
575 }
576
577 _mesa_meta_free(&intel->ctx);
578
579 intel->vtbl.destroy(intel);
580
581 if (ctx->swrast_context) {
582 _swsetup_DestroyContext(&intel->ctx);
583 _tnl_DestroyContext(&intel->ctx);
584 }
585 _vbo_DestroyContext(&intel->ctx);
586
587 if (ctx->swrast_context)
588 _swrast_DestroyContext(&intel->ctx);
589 intel->Fallback = 0x0; /* don't call _swrast_Flush later */
590
591 intel_batchbuffer_free(intel);
592
593 free(intel->prim.vb);
594 intel->prim.vb = NULL;
595 drm_intel_bo_unreference(intel->prim.vb_bo);
596 intel->prim.vb_bo = NULL;
597 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
598 intel->first_post_swapbuffers_batch = NULL;
599
600 driDestroyOptionCache(&intel->optionCache);
601
602 /* free the Mesa context */
603 _mesa_free_context_data(&intel->ctx, true);
604
605 align_free(intel);
606 driContextPriv->driverPrivate = NULL;
607 }
608 }
609
610 GLboolean
intelUnbindContext(__DRIcontext * driContextPriv)611 intelUnbindContext(__DRIcontext * driContextPriv)
612 {
613 /* Unset current context and dispath table */
614 _mesa_make_current(NULL, NULL, NULL);
615
616 return true;
617 }
618
619 GLboolean
intelMakeCurrent(__DRIcontext * driContextPriv,__DRIdrawable * driDrawPriv,__DRIdrawable * driReadPriv)620 intelMakeCurrent(__DRIcontext * driContextPriv,
621 __DRIdrawable * driDrawPriv,
622 __DRIdrawable * driReadPriv)
623 {
624 struct intel_context *intel;
625
626 if (driContextPriv)
627 intel = (struct intel_context *) driContextPriv->driverPrivate;
628 else
629 intel = NULL;
630
631 if (driContextPriv) {
632 struct gl_context *ctx = &intel->ctx;
633 struct gl_framebuffer *fb, *readFb;
634
635 if (driDrawPriv == NULL && driReadPriv == NULL) {
636 fb = _mesa_get_incomplete_framebuffer();
637 readFb = _mesa_get_incomplete_framebuffer();
638 } else {
639 fb = driDrawPriv->driverPrivate;
640 readFb = driReadPriv->driverPrivate;
641 driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
642 driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
643 }
644
645 intel_prepare_render(intel);
646 _mesa_make_current(ctx, fb, readFb);
647
648 /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
649 * is NULL at that point. We can't call _mesa_makecurrent()
650 * first, since we need the buffer size for the initial
651 * viewport. So just call intel_draw_buffer() again here. */
652 intel_draw_buffer(ctx);
653 }
654 else {
655 _mesa_make_current(NULL, NULL, NULL);
656 }
657
658 return true;
659 }
660
661 /**
662 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
663 *
664 * To determine which DRI buffers to request, examine the renderbuffers
665 * attached to the drawable's framebuffer. Then request the buffers with
666 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
667 *
668 * This is called from intel_update_renderbuffers().
669 *
670 * \param drawable Drawable whose buffers are queried.
671 * \param buffers [out] List of buffers returned by DRI2 query.
672 * \param buffer_count [out] Number of buffers returned.
673 *
674 * \see intel_update_renderbuffers()
675 * \see DRI2GetBuffers()
676 * \see DRI2GetBuffersWithFormat()
677 */
678 static void
intel_query_dri2_buffers(struct intel_context * intel,__DRIdrawable * drawable,__DRIbuffer ** buffers,int * buffer_count)679 intel_query_dri2_buffers(struct intel_context *intel,
680 __DRIdrawable *drawable,
681 __DRIbuffer **buffers,
682 int *buffer_count)
683 {
684 __DRIscreen *screen = intel->intelScreen->driScrnPriv;
685 struct gl_framebuffer *fb = drawable->driverPrivate;
686 int i = 0;
687 unsigned attachments[__DRI_BUFFER_COUNT];
688
689 struct intel_renderbuffer *front_rb;
690 struct intel_renderbuffer *back_rb;
691
692 front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
693 back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
694
695 memset(attachments, 0, sizeof(attachments));
696 if ((_mesa_is_front_buffer_drawing(fb) ||
697 _mesa_is_front_buffer_reading(fb) ||
698 !back_rb) && front_rb) {
699 /* If a fake front buffer is in use, then querying for
700 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
701 * the real front buffer to the fake front buffer. So before doing the
702 * query, we need to make sure all the pending drawing has landed in the
703 * real front buffer.
704 */
705 intel_flush(&intel->ctx);
706 intel_flush_front(&intel->ctx);
707
708 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
709 attachments[i++] = intel_bits_per_pixel(front_rb);
710 } else if (front_rb && intel->front_buffer_dirty) {
711 /* We have pending front buffer rendering, but we aren't querying for a
712 * front buffer. If the front buffer we have is a fake front buffer,
713 * the X server is going to throw it away when it processes the query.
714 * So before doing the query, make sure all the pending drawing has
715 * landed in the real front buffer.
716 */
717 intel_flush(&intel->ctx);
718 intel_flush_front(&intel->ctx);
719 }
720
721 if (back_rb) {
722 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
723 attachments[i++] = intel_bits_per_pixel(back_rb);
724 }
725
726 assert(i <= ARRAY_SIZE(attachments));
727
728 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
729 &drawable->w,
730 &drawable->h,
731 attachments, i / 2,
732 buffer_count,
733 drawable->loaderPrivate);
734 }
735
736 /**
737 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
738 *
739 * This is called from intel_update_renderbuffers().
740 *
741 * \par Note:
742 * DRI buffers whose attachment point is DRI2BufferStencil or
743 * DRI2BufferDepthStencil are handled as special cases.
744 *
745 * \param buffer_name is a human readable name, such as "dri2 front buffer",
746 * that is passed to intel_region_alloc_for_handle().
747 *
748 * \see intel_update_renderbuffers()
749 * \see intel_region_alloc_for_handle()
750 */
751 static void
intel_process_dri2_buffer(struct intel_context * intel,__DRIdrawable * drawable,__DRIbuffer * buffer,struct intel_renderbuffer * rb,const char * buffer_name)752 intel_process_dri2_buffer(struct intel_context *intel,
753 __DRIdrawable *drawable,
754 __DRIbuffer *buffer,
755 struct intel_renderbuffer *rb,
756 const char *buffer_name)
757 {
758 struct intel_region *region = NULL;
759
760 if (!rb)
761 return;
762
763 /* We try to avoid closing and reopening the same BO name, because the first
764 * use of a mapping of the buffer involves a bunch of page faulting which is
765 * moderately expensive.
766 */
767 if (rb->mt &&
768 rb->mt->region &&
769 rb->mt->region->name == buffer->name)
770 return;
771
772 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
773 fprintf(stderr,
774 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
775 buffer->name, buffer->attachment,
776 buffer->cpp, buffer->pitch);
777 }
778
779 intel_miptree_release(&rb->mt);
780 region = intel_region_alloc_for_handle(intel->intelScreen,
781 buffer->cpp,
782 drawable->w,
783 drawable->h,
784 buffer->pitch,
785 buffer->name,
786 buffer_name);
787 if (!region)
788 return;
789
790 rb->mt = intel_miptree_create_for_dri2_buffer(intel,
791 buffer->attachment,
792 intel_rb_format(rb),
793 region);
794 intel_region_release(®ion);
795 }
796
797 /**
798 * \brief Query DRI Image loader to obtain a DRIdrawable's buffers.
799 *
800 * To determine which DRI buffers to request, examine the renderbuffers
801 * attached to the drawable's framebuffer. Then request the buffers with
802 * dri3
803 *
804 * This is called from intel_update_renderbuffers().
805 *
806 * \param drawable Drawable whose buffers are queried.
807 * \param buffers [out] List of buffers returned by DRI2 query.
808 * \param buffer_count [out] Number of buffers returned.
809 *
810 * \see intel_update_renderbuffers()
811 */
812
813 static void
intel_update_image_buffer(struct intel_context * intel,__DRIdrawable * drawable,struct intel_renderbuffer * rb,__DRIimage * buffer,enum __DRIimageBufferMask buffer_type)814 intel_update_image_buffer(struct intel_context *intel,
815 __DRIdrawable *drawable,
816 struct intel_renderbuffer *rb,
817 __DRIimage *buffer,
818 enum __DRIimageBufferMask buffer_type)
819 {
820 struct intel_region *region = buffer->region;
821
822 if (!rb || !region)
823 return;
824
825 unsigned num_samples = rb->Base.Base.NumSamples;
826
827 if (rb->mt &&
828 rb->mt->region &&
829 rb->mt->region == region)
830 return;
831
832 intel_miptree_release(&rb->mt);
833 rb->mt = intel_miptree_create_for_image_buffer(intel,
834 buffer_type,
835 intel_rb_format(rb),
836 num_samples,
837 region);
838 }
839
840
841 static void
intel_update_image_buffers(struct intel_context * intel,__DRIdrawable * drawable)842 intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable)
843 {
844 struct gl_framebuffer *fb = drawable->driverPrivate;
845 __DRIscreen *screen = intel->intelScreen->driScrnPriv;
846 struct intel_renderbuffer *front_rb;
847 struct intel_renderbuffer *back_rb;
848 struct __DRIimageList images;
849 unsigned int format;
850 uint32_t buffer_mask = 0;
851 int ret;
852
853 front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
854 back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
855
856 if (back_rb)
857 format = intel_rb_format(back_rb);
858 else if (front_rb)
859 format = intel_rb_format(front_rb);
860 else
861 return;
862
863 if (front_rb && (_mesa_is_front_buffer_drawing(fb) ||
864 _mesa_is_front_buffer_reading(fb) || !back_rb)) {
865 buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
866 }
867
868 if (back_rb)
869 buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
870
871 ret = screen->image.loader->getBuffers(drawable,
872 driGLFormatToImageFormat(format),
873 &drawable->dri2.stamp,
874 drawable->loaderPrivate,
875 buffer_mask,
876 &images);
877 if (!ret)
878 return;
879
880 if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
881 drawable->w = images.front->width;
882 drawable->h = images.front->height;
883 intel_update_image_buffer(intel,
884 drawable,
885 front_rb,
886 images.front,
887 __DRI_IMAGE_BUFFER_FRONT);
888 }
889 if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
890 drawable->w = images.back->width;
891 drawable->h = images.back->height;
892 intel_update_image_buffer(intel,
893 drawable,
894 back_rb,
895 images.back,
896 __DRI_IMAGE_BUFFER_BACK);
897 }
898 }
899