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/renderbuffer.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_pixel.h"
48 #include "intel_regions.h"
49 #include "intel_buffer_objects.h"
50 #include "intel_fbo.h"
51 #include "intel_bufmgr.h"
52 #include "intel_screen.h"
53 #include "intel_mipmap_tree.h"
56 #include "../glsl/ralloc.h"
59 int INTEL_DEBUG
= (0);
63 static const GLubyte
*
64 intelGetString(struct gl_context
* ctx
, GLenum name
)
66 const struct brw_context
*const brw
= brw_context(ctx
);
68 static char buffer
[128];
72 return (GLubyte
*) "Intel Open Source Technology Center";
76 switch (brw
->intelScreen
->deviceID
) {
78 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
79 #include "pci_ids/i965_pci_ids.h"
81 chipset
= "Unknown Intel Chipset";
85 (void) driGetRendererString(buffer
, chipset
, 0);
86 return (GLubyte
*) buffer
;
94 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
95 __DRIdrawable
*drawable
)
98 /* MSAA and fast color clear are not supported, so don't waste time
99 * checking whether a resolve is needed.
104 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
105 struct intel_renderbuffer
*rb
;
107 /* Usually, only the back buffer will need to be downsampled. However,
108 * the front buffer will also need it if the user has rendered into it.
110 static const gl_buffer_index buffers
[2] = {
115 for (int i
= 0; i
< 2; ++i
) {
116 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
117 if (rb
== NULL
|| rb
->mt
== NULL
)
119 if (rb
->mt
->num_samples
<= 1)
120 intel_miptree_resolve_color(brw
, rb
->mt
);
122 intel_miptree_downsample(brw
, rb
->mt
);
127 intel_flush_front(struct gl_context
*ctx
)
129 struct brw_context
*brw
= brw_context(ctx
);
130 __DRIcontext
*driContext
= brw
->driContext
;
131 __DRIdrawable
*driDrawable
= driContext
->driDrawablePriv
;
132 __DRIscreen
*const screen
= brw
->intelScreen
->driScrnPriv
;
134 if (brw
->front_buffer_dirty
&& _mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
135 if (screen
->dri2
.loader
->flushFrontBuffer
!= NULL
&&
137 driDrawable
->loaderPrivate
) {
139 /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
141 * This potentially resolves both front and back buffer. It
142 * is unnecessary to resolve the back, but harms nothing except
143 * performance. And no one cares about front-buffer render
146 intel_resolve_for_dri2_flush(brw
, driDrawable
);
147 intel_batchbuffer_flush(brw
);
149 screen
->dri2
.loader
->flushFrontBuffer(driDrawable
,
150 driDrawable
->loaderPrivate
);
152 /* We set the dirty bit in intel_prepare_render() if we're
153 * front buffer rendering once we get there.
155 brw
->front_buffer_dirty
= false;
161 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
163 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
167 intel_query_dri2_buffers(struct brw_context
*brw
,
168 __DRIdrawable
*drawable
,
169 __DRIbuffer
**buffers
,
173 intel_process_dri2_buffer(struct brw_context
*brw
,
174 __DRIdrawable
*drawable
,
176 struct intel_renderbuffer
*rb
,
177 const char *buffer_name
);
180 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
182 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
183 struct intel_renderbuffer
*rb
;
184 struct brw_context
*brw
= context
->driverPrivate
;
185 __DRIbuffer
*buffers
= NULL
;
187 const char *region_name
;
189 /* Set this up front, so that in case our buffers get invalidated
190 * while we're getting new buffers, we don't clobber the stamp and
191 * thus ignore the invalidate. */
192 drawable
->lastStamp
= drawable
->dri2
.stamp
;
194 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
195 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
197 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
202 for (i
= 0; i
< count
; i
++) {
203 switch (buffers
[i
].attachment
) {
204 case __DRI_BUFFER_FRONT_LEFT
:
205 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
206 region_name
= "dri2 front buffer";
209 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
210 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
211 region_name
= "dri2 fake front buffer";
214 case __DRI_BUFFER_BACK_LEFT
:
215 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
216 region_name
= "dri2 back buffer";
219 case __DRI_BUFFER_DEPTH
:
220 case __DRI_BUFFER_HIZ
:
221 case __DRI_BUFFER_DEPTH_STENCIL
:
222 case __DRI_BUFFER_STENCIL
:
223 case __DRI_BUFFER_ACCUM
:
226 "unhandled buffer attach event, attachment type %d\n",
227 buffers
[i
].attachment
);
231 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
234 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
238 * intel_prepare_render should be called anywhere that curent read/drawbuffer
242 intel_prepare_render(struct brw_context
*brw
)
244 __DRIcontext
*driContext
= brw
->driContext
;
245 __DRIdrawable
*drawable
;
247 drawable
= driContext
->driDrawablePriv
;
248 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
249 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
250 intel_update_renderbuffers(driContext
, drawable
);
251 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
254 drawable
= driContext
->driReadablePriv
;
255 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
256 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
257 intel_update_renderbuffers(driContext
, drawable
);
258 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
261 /* If we're currently rendering to the front buffer, the rendering
262 * that will happen next will probably dirty the front buffer. So
263 * mark it as dirty here.
265 if (brw
->is_front_buffer_rendering
)
266 brw
->front_buffer_dirty
= true;
268 /* Wait for the swapbuffers before the one we just emitted, so we
269 * don't get too many swaps outstanding for apps that are GPU-heavy
272 * We're using intelDRI2Flush (called from the loader before
273 * swapbuffer) and glFlush (for front buffer rendering) as the
274 * indicator that a frame is done and then throttle when we get
275 * here as we prepare to render the next frame. At this point for
276 * round trips for swap/copy and getting new buffers are done and
277 * we'll spend less time waiting on the GPU.
279 * Unfortunately, we don't have a handle to the batch containing
280 * the swap, and getting our hands on that doesn't seem worth it,
281 * so we just us the first batch we emitted after the last swap.
283 if (brw
->need_throttle
&& brw
->first_post_swapbuffers_batch
) {
284 if (!brw
->disable_throttling
)
285 drm_intel_bo_wait_rendering(brw
->first_post_swapbuffers_batch
);
286 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
287 brw
->first_post_swapbuffers_batch
= NULL
;
288 brw
->need_throttle
= false;
293 intel_viewport(struct gl_context
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
295 struct brw_context
*brw
= brw_context(ctx
);
296 __DRIcontext
*driContext
= brw
->driContext
;
298 if (brw
->saved_viewport
)
299 brw
->saved_viewport(ctx
, x
, y
, w
, h
);
301 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
302 dri2InvalidateDrawable(driContext
->driDrawablePriv
);
303 dri2InvalidateDrawable(driContext
->driReadablePriv
);
307 static const struct dri_debug_control debug_control
[] = {
308 { "tex", DEBUG_TEXTURE
},
309 { "state", DEBUG_STATE
},
310 { "ioctl", DEBUG_IOCTL
},
311 { "blit", DEBUG_BLIT
},
312 { "mip", DEBUG_MIPTREE
},
313 { "fall", DEBUG_PERF
},
314 { "perf", DEBUG_PERF
},
315 { "bat", DEBUG_BATCH
},
316 { "pix", DEBUG_PIXEL
},
317 { "buf", DEBUG_BUFMGR
},
318 { "reg", DEBUG_REGION
},
322 { "sync", DEBUG_SYNC
},
323 { "prim", DEBUG_PRIMS
},
324 { "vert", DEBUG_VERTS
},
325 { "dri", DEBUG_DRI
},
327 { "stats", DEBUG_STATS
},
329 { "urb", DEBUG_URB
},
331 { "clip", DEBUG_CLIP
},
332 { "aub", DEBUG_AUB
},
333 { "shader_time", DEBUG_SHADER_TIME
},
334 { "no16", DEBUG_NO16
},
335 { "blorp", DEBUG_BLORP
},
336 { "vue", DEBUG_VUE
},
342 intelInvalidateState(struct gl_context
* ctx
, GLuint new_state
)
344 struct brw_context
*brw
= brw_context(ctx
);
346 if (ctx
->swrast_context
)
347 _swrast_InvalidateState(ctx
, new_state
);
348 _vbo_InvalidateState(ctx
, new_state
);
350 brw
->NewGLState
|= new_state
;
354 intel_glFlush(struct gl_context
*ctx
)
356 struct brw_context
*brw
= brw_context(ctx
);
358 intel_batchbuffer_flush(brw
);
359 intel_flush_front(ctx
);
360 if (brw
->is_front_buffer_rendering
)
361 brw
->need_throttle
= true;
365 intelFinish(struct gl_context
* ctx
)
367 struct brw_context
*brw
= brw_context(ctx
);
371 if (brw
->batch
.last_bo
)
372 drm_intel_bo_wait_rendering(brw
->batch
.last_bo
);
376 intelInitDriverFunctions(struct dd_function_table
*functions
)
378 _mesa_init_driver_functions(functions
);
380 functions
->Flush
= intel_glFlush
;
381 functions
->Finish
= intelFinish
;
382 functions
->GetString
= intelGetString
;
383 functions
->UpdateState
= intelInvalidateState
;
385 intelInitTextureFuncs(functions
);
386 intelInitTextureImageFuncs(functions
);
387 intelInitTextureSubImageFuncs(functions
);
388 intelInitTextureCopyImageFuncs(functions
);
389 intelInitClearFuncs(functions
);
390 intelInitBufferFuncs(functions
);
391 intelInitPixelFuncs(functions
);
392 intelInitBufferObjectFuncs(functions
);
393 intel_init_syncobj_functions(functions
);
394 brw_init_object_purgeable_functions(functions
);
398 validate_context_version(struct intel_screen
*screen
,
400 unsigned major_version
,
401 unsigned minor_version
,
402 unsigned *dri_ctx_error
)
404 unsigned req_version
= 10 * major_version
+ minor_version
;
405 unsigned max_version
= 0;
408 case API_OPENGL_COMPAT
:
409 max_version
= screen
->max_gl_compat_version
;
411 case API_OPENGL_CORE
:
412 max_version
= screen
->max_gl_core_version
;
415 max_version
= screen
->max_gl_es1_version
;
418 max_version
= screen
->max_gl_es2_version
;
425 if (max_version
== 0) {
426 *dri_ctx_error
= __DRI_CTX_ERROR_BAD_API
;
428 } else if (req_version
> max_version
) {
429 *dri_ctx_error
= __DRI_CTX_ERROR_BAD_VERSION
;
437 intelInitContext(struct brw_context
*brw
,
439 unsigned major_version
,
440 unsigned minor_version
,
441 const struct gl_config
* mesaVis
,
442 __DRIcontext
* driContextPriv
,
443 void *sharedContextPrivate
,
444 struct dd_function_table
*functions
,
445 unsigned *dri_ctx_error
)
447 struct gl_context
*ctx
= &brw
->ctx
;
448 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
449 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
450 struct intel_screen
*intelScreen
= sPriv
->driverPrivate
;
452 struct gl_config visual
;
454 /* we can't do anything without a connection to the device */
455 if (intelScreen
->bufmgr
== NULL
) {
456 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
460 if (!validate_context_version(intelScreen
,
461 api
, major_version
, minor_version
,
465 /* Can't rely on invalidate events, fall back to glViewport hack */
466 if (!driContextPriv
->driScreenPriv
->dri2
.useInvalidate
) {
467 brw
->saved_viewport
= functions
->Viewport
;
468 functions
->Viewport
= intel_viewport
;
471 if (mesaVis
== NULL
) {
472 memset(&visual
, 0, sizeof visual
);
476 brw
->intelScreen
= intelScreen
;
477 brw
->bufmgr
= intelScreen
->bufmgr
;
479 if (!_mesa_initialize_context(&brw
->ctx
, api
, mesaVis
, shareCtx
,
481 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
482 printf("%s: failed to init mesa context\n", __FUNCTION__
);
486 driContextPriv
->driverPrivate
= brw
;
487 brw
->driContext
= driContextPriv
;
489 brw
->gen
= intelScreen
->gen
;
491 const int devID
= intelScreen
->deviceID
;
492 if (IS_SNB_GT1(devID
) || IS_IVB_GT1(devID
) || IS_HSW_GT1(devID
))
494 else if (IS_SNB_GT2(devID
) || IS_IVB_GT2(devID
) || IS_HSW_GT2(devID
))
496 else if (IS_HSW_GT3(devID
))
501 if (IS_HASWELL(devID
)) {
502 brw
->is_haswell
= true;
503 } else if (IS_BAYTRAIL(devID
)) {
504 brw
->is_baytrail
= true;
506 } else if (IS_G4X(devID
)) {
510 brw
->has_separate_stencil
= brw
->intelScreen
->hw_has_separate_stencil
;
511 brw
->must_use_separate_stencil
= brw
->intelScreen
->hw_must_use_separate_stencil
;
512 brw
->has_hiz
= brw
->gen
>= 6;
513 brw
->has_llc
= brw
->intelScreen
->hw_has_llc
;
514 brw
->has_swizzling
= brw
->intelScreen
->hw_has_swizzling
;
516 memset(&ctx
->TextureFormatSupported
,
517 0, sizeof(ctx
->TextureFormatSupported
));
519 driParseConfigFiles(&brw
->optionCache
, &intelScreen
->optionCache
,
520 sPriv
->myNum
, "i965");
522 /* Estimate the size of the mappable aperture into the GTT. There's an
523 * ioctl to get the whole GTT size, but not one to get the mappable subset.
524 * It turns out it's basically always 256MB, though some ancient hardware
527 uint32_t gtt_size
= 256 * 1024 * 1024;
529 /* We don't want to map two objects such that a memcpy between them would
530 * just fault one mapping in and then the other over and over forever. So
531 * we would need to divide the GTT size by 2. Additionally, some GTT is
532 * taken up by things like the framebuffer and the ringbuffer and such, so
533 * be more conservative.
535 brw
->max_gtt_map_object_size
= gtt_size
/ 4;
537 bo_reuse_mode
= driQueryOptioni(&brw
->optionCache
, "bo_reuse");
538 switch (bo_reuse_mode
) {
539 case DRI_CONF_BO_REUSE_DISABLED
:
541 case DRI_CONF_BO_REUSE_ALL
:
542 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
546 /* Initialize the software rasterizer and helper modules.
548 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
549 * software fallbacks (which we have to support on legacy GL to do weird
550 * glDrawPixels(), glBitmap(), and other functions).
552 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
553 _swrast_CreateContext(ctx
);
556 _vbo_CreateContext(ctx
);
557 if (ctx
->swrast_context
) {
558 _tnl_CreateContext(ctx
);
559 _swsetup_CreateContext(ctx
);
561 /* Configure swrast to match hardware characteristics: */
562 _swrast_allow_pixel_fog(ctx
, false);
563 _swrast_allow_vertex_fog(ctx
, true);
566 _mesa_meta_init(ctx
);
568 intelInitExtensions(ctx
);
570 INTEL_DEBUG
= driParseDebugString(getenv("INTEL_DEBUG"), debug_control
);
571 if (INTEL_DEBUG
& DEBUG_BUFMGR
)
572 dri_bufmgr_set_debug(brw
->bufmgr
, true);
573 if ((INTEL_DEBUG
& DEBUG_SHADER_TIME
) && brw
->gen
< 7) {
575 "shader_time debugging requires gen7 (Ivybridge) or better.\n");
576 INTEL_DEBUG
&= ~DEBUG_SHADER_TIME
;
578 if (INTEL_DEBUG
& DEBUG_PERF
)
579 brw
->perf_debug
= true;
581 if (INTEL_DEBUG
& DEBUG_AUB
)
582 drm_intel_bufmgr_gem_set_aub_dump(brw
->bufmgr
, true);
584 intel_batchbuffer_init(brw
);
588 if (!driQueryOptionb(&brw
->optionCache
, "hiz")) {
589 brw
->has_hiz
= false;
590 /* On gen6, you can only do separate stencil with HIZ. */
592 brw
->has_separate_stencil
= false;
595 if (driQueryOptionb(&brw
->optionCache
, "always_flush_batch")) {
596 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
597 brw
->always_flush_batch
= 1;
600 if (driQueryOptionb(&brw
->optionCache
, "always_flush_cache")) {
601 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
602 brw
->always_flush_cache
= 1;
605 if (driQueryOptionb(&brw
->optionCache
, "disable_throttling")) {
606 fprintf(stderr
, "disabling flush throttling\n");
607 brw
->disable_throttling
= 1;
614 intelDestroyContext(__DRIcontext
* driContextPriv
)
616 struct brw_context
*brw
=
617 (struct brw_context
*) driContextPriv
->driverPrivate
;
618 struct gl_context
*ctx
= &brw
->ctx
;
620 assert(brw
); /* should never be null */
622 /* Dump a final BMP in case the application doesn't call SwapBuffers */
623 if (INTEL_DEBUG
& DEBUG_AUB
) {
624 intel_batchbuffer_flush(brw
);
625 aub_dump_bmp(&brw
->ctx
);
628 _mesa_meta_free(&brw
->ctx
);
630 brw
->vtbl
.destroy(brw
);
632 if (ctx
->swrast_context
) {
633 _swsetup_DestroyContext(&brw
->ctx
);
634 _tnl_DestroyContext(&brw
->ctx
);
636 _vbo_DestroyContext(&brw
->ctx
);
638 if (ctx
->swrast_context
)
639 _swrast_DestroyContext(&brw
->ctx
);
641 intel_batchbuffer_free(brw
);
643 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
644 brw
->first_post_swapbuffers_batch
= NULL
;
646 driDestroyOptionCache(&brw
->optionCache
);
648 /* free the Mesa context */
649 _mesa_free_context_data(&brw
->ctx
);
652 driContextPriv
->driverPrivate
= NULL
;
657 intelUnbindContext(__DRIcontext
* driContextPriv
)
659 /* Unset current context and dispath table */
660 _mesa_make_current(NULL
, NULL
, NULL
);
666 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
667 * on window system framebuffers.
669 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
670 * your renderbuffer can do sRGB encode, and you can flip a switch that does
671 * sRGB encode if the renderbuffer can handle it. You can ask specifically
672 * for a visual where you're guaranteed to be capable, but it turns out that
673 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
674 * incapable ones, becuase there's no difference between the two in resources
675 * used. Applications thus get built that accidentally rely on the default
676 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
679 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
680 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
681 * So they removed the enable knob and made it "if the renderbuffer is sRGB
682 * capable, do sRGB encode". Then, for your window system renderbuffers, you
683 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
684 * and get no sRGB encode (assuming that both kinds of visual are available).
685 * Thus our choice to support sRGB by default on our visuals for desktop would
686 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
688 * Unfortunately, renderbuffer setup happens before a context is created. So
689 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
690 * context (without an sRGB visual, though we don't have sRGB visuals exposed
691 * yet), we go turn that back off before anyone finds out.
694 intel_gles3_srgb_workaround(struct brw_context
*brw
,
695 struct gl_framebuffer
*fb
)
697 struct gl_context
*ctx
= &brw
->ctx
;
699 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
702 /* Some day when we support the sRGB capable bit on visuals available for
703 * GLES, we'll need to respect that and not disable things here.
705 fb
->Visual
.sRGBCapable
= false;
706 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
707 if (fb
->Attachment
[i
].Renderbuffer
&&
708 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_SARGB8
) {
709 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_ARGB8888
;
715 intelMakeCurrent(__DRIcontext
* driContextPriv
,
716 __DRIdrawable
* driDrawPriv
,
717 __DRIdrawable
* driReadPriv
)
719 struct brw_context
*brw
;
720 GET_CURRENT_CONTEXT(curCtx
);
723 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
727 /* According to the glXMakeCurrent() man page: "Pending commands to
728 * the previous context, if any, are flushed before it is released."
729 * But only flush if we're actually changing contexts.
731 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
735 if (driContextPriv
) {
736 struct gl_context
*ctx
= &brw
->ctx
;
737 struct gl_framebuffer
*fb
, *readFb
;
739 if (driDrawPriv
== NULL
&& driReadPriv
== NULL
) {
740 fb
= _mesa_get_incomplete_framebuffer();
741 readFb
= _mesa_get_incomplete_framebuffer();
743 fb
= driDrawPriv
->driverPrivate
;
744 readFb
= driReadPriv
->driverPrivate
;
745 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
746 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
749 /* The sRGB workaround changes the renderbuffer's format. We must change
750 * the format before the renderbuffer's miptree get's allocated, otherwise
751 * the formats of the renderbuffer and its miptree will differ.
753 intel_gles3_srgb_workaround(brw
, fb
);
754 intel_gles3_srgb_workaround(brw
, readFb
);
756 intel_prepare_render(brw
);
757 _mesa_make_current(ctx
, fb
, readFb
);
760 _mesa_make_current(NULL
, NULL
, NULL
);
767 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
769 * To determine which DRI buffers to request, examine the renderbuffers
770 * attached to the drawable's framebuffer. Then request the buffers with
771 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
773 * This is called from intel_update_renderbuffers().
775 * \param drawable Drawable whose buffers are queried.
776 * \param buffers [out] List of buffers returned by DRI2 query.
777 * \param buffer_count [out] Number of buffers returned.
779 * \see intel_update_renderbuffers()
780 * \see DRI2GetBuffers()
781 * \see DRI2GetBuffersWithFormat()
784 intel_query_dri2_buffers(struct brw_context
*brw
,
785 __DRIdrawable
*drawable
,
786 __DRIbuffer
**buffers
,
789 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
790 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
792 unsigned attachments
[8];
794 struct intel_renderbuffer
*front_rb
;
795 struct intel_renderbuffer
*back_rb
;
797 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
798 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
800 memset(attachments
, 0, sizeof(attachments
));
801 if ((brw
->is_front_buffer_rendering
||
802 brw
->is_front_buffer_reading
||
803 !back_rb
) && front_rb
) {
804 /* If a fake front buffer is in use, then querying for
805 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
806 * the real front buffer to the fake front buffer. So before doing the
807 * query, we need to make sure all the pending drawing has landed in the
810 intel_batchbuffer_flush(brw
);
811 intel_flush_front(&brw
->ctx
);
813 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
814 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
815 } else if (front_rb
&& brw
->front_buffer_dirty
) {
816 /* We have pending front buffer rendering, but we aren't querying for a
817 * front buffer. If the front buffer we have is a fake front buffer,
818 * the X server is going to throw it away when it processes the query.
819 * So before doing the query, make sure all the pending drawing has
820 * landed in the real front buffer.
822 intel_batchbuffer_flush(brw
);
823 intel_flush_front(&brw
->ctx
);
827 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
828 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
831 assert(i
<= ARRAY_SIZE(attachments
));
833 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
838 drawable
->loaderPrivate
);
842 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
844 * This is called from intel_update_renderbuffers().
847 * DRI buffers whose attachment point is DRI2BufferStencil or
848 * DRI2BufferDepthStencil are handled as special cases.
850 * \param buffer_name is a human readable name, such as "dri2 front buffer",
851 * that is passed to intel_region_alloc_for_handle().
853 * \see intel_update_renderbuffers()
854 * \see intel_region_alloc_for_handle()
857 intel_process_dri2_buffer(struct brw_context
*brw
,
858 __DRIdrawable
*drawable
,
860 struct intel_renderbuffer
*rb
,
861 const char *buffer_name
)
863 struct intel_region
*region
= NULL
;
868 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
870 /* We try to avoid closing and reopening the same BO name, because the first
871 * use of a mapping of the buffer involves a bunch of page faulting which is
872 * moderately expensive.
874 if (num_samples
== 0) {
877 rb
->mt
->region
->name
== buffer
->name
)
881 rb
->mt
->singlesample_mt
&&
882 rb
->mt
->singlesample_mt
->region
&&
883 rb
->mt
->singlesample_mt
->region
->name
== buffer
->name
)
887 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
889 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
890 buffer
->name
, buffer
->attachment
,
891 buffer
->cpp
, buffer
->pitch
);
894 intel_miptree_release(&rb
->mt
);
895 region
= intel_region_alloc_for_handle(brw
->intelScreen
,
905 rb
->mt
= intel_miptree_create_for_dri2_buffer(brw
,
910 intel_region_release(®ion
);