2 Copyright 2003 VMware, Inc.
3 Copyright (C) Intel Corp. 2006. All Rights Reserved.
4 Intel funded Tungsten Graphics to
5 develop this 3D driver.
7 Permission is hereby granted, free of charge, to any person obtaining
8 a copy of this software and associated documentation files (the
9 "Software"), to deal in the Software without restriction, including
10 without limitation the rights to use, copy, modify, merge, publish,
11 distribute, sublicense, and/or sell copies of the Software, and to
12 permit persons to whom the Software is furnished to do so, subject to
13 the following conditions:
15 The above copyright notice and this permission notice (including the
16 next paragraph) shall be included in all copies or substantial
17 portions of the Software.
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
23 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **********************************************************************/
30 * Keith Whitwell <keithw@vmware.com>
34 #include "main/api_exec.h"
35 #include "main/context.h"
36 #include "main/fbobject.h"
37 #include "main/imports.h"
38 #include "main/macros.h"
39 #include "main/points.h"
40 #include "main/version.h"
41 #include "main/vtxfmt.h"
43 #include "vbo/vbo_context.h"
45 #include "drivers/common/driverfuncs.h"
46 #include "drivers/common/meta.h"
49 #include "brw_context.h"
50 #include "brw_defines.h"
52 #include "brw_state.h"
54 #include "intel_batchbuffer.h"
55 #include "intel_buffer_objects.h"
56 #include "intel_buffers.h"
57 #include "intel_fbo.h"
58 #include "intel_mipmap_tree.h"
59 #include "intel_pixel.h"
60 #include "intel_regions.h"
61 #include "intel_tex.h"
62 #include "intel_tex_obj.h"
64 #include "swrast_setup/swrast_setup.h"
66 #include "tnl/t_pipeline.h"
67 #include "glsl/ralloc.h"
69 /***************************************
70 * Mesa's Driver Functions
71 ***************************************/
74 brw_query_samples_for_format(struct gl_context
*ctx
, GLenum target
,
75 GLenum internalFormat
, int samples
[16])
77 struct brw_context
*brw
= brw_context(ctx
);
103 const char *const brw_vendor_string
= "Intel Open Source Technology Center";
106 brw_get_renderer_string(unsigned deviceID
)
109 static char buffer
[128];
113 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
114 #include "pci_ids/i965_pci_ids.h"
116 chipset
= "Unknown Intel Chipset";
120 (void) driGetRendererString(buffer
, chipset
, 0);
124 static const GLubyte
*
125 intelGetString(struct gl_context
* ctx
, GLenum name
)
127 const struct brw_context
*const brw
= brw_context(ctx
);
131 return (GLubyte
*) brw_vendor_string
;
135 (GLubyte
*) brw_get_renderer_string(brw
->intelScreen
->deviceID
);
143 intel_viewport(struct gl_context
*ctx
)
145 struct brw_context
*brw
= brw_context(ctx
);
146 __DRIcontext
*driContext
= brw
->driContext
;
148 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
149 dri2InvalidateDrawable(driContext
->driDrawablePriv
);
150 dri2InvalidateDrawable(driContext
->driReadablePriv
);
155 intelInvalidateState(struct gl_context
* ctx
, GLuint new_state
)
157 struct brw_context
*brw
= brw_context(ctx
);
159 if (ctx
->swrast_context
)
160 _swrast_InvalidateState(ctx
, new_state
);
161 _vbo_InvalidateState(ctx
, new_state
);
163 brw
->NewGLState
|= new_state
;
166 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
169 intel_flush_front(struct gl_context
*ctx
)
171 struct brw_context
*brw
= brw_context(ctx
);
172 __DRIcontext
*driContext
= brw
->driContext
;
173 __DRIdrawable
*driDrawable
= driContext
->driDrawablePriv
;
174 __DRIscreen
*const screen
= brw
->intelScreen
->driScrnPriv
;
176 if (brw
->front_buffer_dirty
&& _mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
177 if (flushFront(screen
) && driDrawable
&&
178 driDrawable
->loaderPrivate
) {
180 /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
182 * This potentially resolves both front and back buffer. It
183 * is unnecessary to resolve the back, but harms nothing except
184 * performance. And no one cares about front-buffer render
187 intel_resolve_for_dri2_flush(brw
, driDrawable
);
188 intel_batchbuffer_flush(brw
);
190 flushFront(screen
)(driDrawable
, driDrawable
->loaderPrivate
);
192 /* We set the dirty bit in intel_prepare_render() if we're
193 * front buffer rendering once we get there.
195 brw
->front_buffer_dirty
= false;
201 intel_glFlush(struct gl_context
*ctx
)
203 struct brw_context
*brw
= brw_context(ctx
);
205 intel_batchbuffer_flush(brw
);
206 intel_flush_front(ctx
);
207 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
208 brw
->need_throttle
= true;
212 intelFinish(struct gl_context
* ctx
)
214 struct brw_context
*brw
= brw_context(ctx
);
218 if (brw
->batch
.last_bo
)
219 drm_intel_bo_wait_rendering(brw
->batch
.last_bo
);
223 brw_init_driver_functions(struct brw_context
*brw
,
224 struct dd_function_table
*functions
)
226 _mesa_init_driver_functions(functions
);
228 /* GLX uses DRI2 invalidate events to handle window resizing.
229 * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
230 * which doesn't provide a mechanism for snooping the event queues.
232 * So EGL still relies on viewport hacks to handle window resizing.
233 * This should go away with DRI3000.
235 if (!brw
->driContext
->driScreenPriv
->dri2
.useInvalidate
)
236 functions
->Viewport
= intel_viewport
;
238 functions
->Flush
= intel_glFlush
;
239 functions
->Finish
= intelFinish
;
240 functions
->GetString
= intelGetString
;
241 functions
->UpdateState
= intelInvalidateState
;
243 intelInitTextureFuncs(functions
);
244 intelInitTextureImageFuncs(functions
);
245 intelInitTextureSubImageFuncs(functions
);
246 intelInitTextureCopyImageFuncs(functions
);
247 intelInitClearFuncs(functions
);
248 intelInitBufferFuncs(functions
);
249 intelInitPixelFuncs(functions
);
250 intelInitBufferObjectFuncs(functions
);
251 intel_init_syncobj_functions(functions
);
252 brw_init_object_purgeable_functions(functions
);
254 brwInitFragProgFuncs( functions
);
255 brw_init_common_queryobj_functions(functions
);
257 gen6_init_queryobj_functions(functions
);
259 gen4_init_queryobj_functions(functions
);
261 functions
->QuerySamplesForFormat
= brw_query_samples_for_format
;
263 functions
->NewTransformFeedback
= brw_new_transform_feedback
;
264 functions
->DeleteTransformFeedback
= brw_delete_transform_feedback
;
265 functions
->GetTransformFeedbackVertexCount
=
266 brw_get_transform_feedback_vertex_count
;
268 functions
->BeginTransformFeedback
= gen7_begin_transform_feedback
;
269 functions
->EndTransformFeedback
= gen7_end_transform_feedback
;
270 functions
->PauseTransformFeedback
= gen7_pause_transform_feedback
;
271 functions
->ResumeTransformFeedback
= gen7_resume_transform_feedback
;
273 functions
->BeginTransformFeedback
= brw_begin_transform_feedback
;
274 functions
->EndTransformFeedback
= brw_end_transform_feedback
;
278 functions
->GetSamplePosition
= gen6_get_sample_position
;
282 brw_initialize_context_constants(struct brw_context
*brw
)
284 struct gl_context
*ctx
= &brw
->ctx
;
286 unsigned max_samplers
=
287 brw
->gen
>= 8 || brw
->is_haswell
? BRW_MAX_TEX_UNIT
: 16;
289 ctx
->Const
.QueryCounterBits
.Timestamp
= 36;
291 ctx
->Const
.StripTextureBorder
= true;
293 ctx
->Const
.MaxDualSourceDrawBuffers
= 1;
294 ctx
->Const
.MaxDrawBuffers
= BRW_MAX_DRAW_BUFFERS
;
295 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
= max_samplers
;
296 ctx
->Const
.MaxTextureCoordUnits
= 8; /* Mesa limit */
297 ctx
->Const
.MaxTextureUnits
=
298 MIN2(ctx
->Const
.MaxTextureCoordUnits
,
299 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
);
300 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
= max_samplers
;
302 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= max_samplers
;
304 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= 0;
305 if (getenv("INTEL_COMPUTE_SHADER")) {
306 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= BRW_MAX_TEX_UNIT
;
307 ctx
->Const
.MaxUniformBufferBindings
+= 12;
309 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= 0;
311 ctx
->Const
.MaxCombinedTextureImageUnits
=
312 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
313 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
+
314 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
315 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
317 ctx
->Const
.MaxTextureLevels
= 14; /* 8192 */
318 if (ctx
->Const
.MaxTextureLevels
> MAX_TEXTURE_LEVELS
)
319 ctx
->Const
.MaxTextureLevels
= MAX_TEXTURE_LEVELS
;
320 ctx
->Const
.Max3DTextureLevels
= 12; /* 2048 */
321 ctx
->Const
.MaxCubeTextureLevels
= 14; /* 8192 */
322 ctx
->Const
.MaxTextureMbytes
= 1536;
325 ctx
->Const
.MaxArrayTextureLayers
= 2048;
327 ctx
->Const
.MaxArrayTextureLayers
= 512;
329 ctx
->Const
.MaxTextureRectSize
= 1 << 12;
331 ctx
->Const
.MaxTextureMaxAnisotropy
= 16.0;
333 ctx
->Const
.MaxRenderbufferSize
= 8192;
335 /* Hardware only supports a limited number of transform feedback buffers.
336 * So we need to override the Mesa default (which is based only on software
339 ctx
->Const
.MaxTransformFeedbackBuffers
= BRW_MAX_SOL_BUFFERS
;
341 /* On Gen6, in the worst case, we use up one binding table entry per
342 * transform feedback component (see comments above the definition of
343 * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value
344 * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to
345 * BRW_MAX_SOL_BINDINGS.
347 * In "separate components" mode, we need to divide this value by
348 * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries
349 * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS.
351 ctx
->Const
.MaxTransformFeedbackInterleavedComponents
= BRW_MAX_SOL_BINDINGS
;
352 ctx
->Const
.MaxTransformFeedbackSeparateComponents
=
353 BRW_MAX_SOL_BINDINGS
/ BRW_MAX_SOL_BUFFERS
;
355 ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
= true;
358 const int *msaa_modes
= intel_supported_msaa_modes(brw
->intelScreen
);
359 const int clamp_max_samples
=
360 driQueryOptioni(&brw
->optionCache
, "clamp_max_samples");
362 if (clamp_max_samples
< 0) {
363 max_samples
= msaa_modes
[0];
365 /* Select the largest supported MSAA mode that does not exceed
369 for (int i
= 0; msaa_modes
[i
] != 0; ++i
) {
370 if (msaa_modes
[i
] <= clamp_max_samples
) {
371 max_samples
= msaa_modes
[i
];
377 ctx
->Const
.MaxSamples
= max_samples
;
378 ctx
->Const
.MaxColorTextureSamples
= max_samples
;
379 ctx
->Const
.MaxDepthTextureSamples
= max_samples
;
380 ctx
->Const
.MaxIntegerSamples
= max_samples
;
383 ctx
->Const
.MaxProgramTextureGatherComponents
= 4;
384 else if (brw
->gen
== 6)
385 ctx
->Const
.MaxProgramTextureGatherComponents
= 1;
387 ctx
->Const
.MinLineWidth
= 1.0;
388 ctx
->Const
.MinLineWidthAA
= 1.0;
389 ctx
->Const
.MaxLineWidth
= 5.0;
390 ctx
->Const
.MaxLineWidthAA
= 5.0;
391 ctx
->Const
.LineWidthGranularity
= 0.5;
393 ctx
->Const
.MinPointSize
= 1.0;
394 ctx
->Const
.MinPointSizeAA
= 1.0;
395 ctx
->Const
.MaxPointSize
= 255.0;
396 ctx
->Const
.MaxPointSizeAA
= 255.0;
397 ctx
->Const
.PointSizeGranularity
= 1.0;
399 if (brw
->gen
>= 5 || brw
->is_g4x
)
400 ctx
->Const
.MaxClipPlanes
= 8;
402 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeInstructions
= 16 * 1024;
403 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAluInstructions
= 0;
404 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexInstructions
= 0;
405 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexIndirections
= 0;
406 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAluInstructions
= 0;
407 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexInstructions
= 0;
408 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexIndirections
= 0;
409 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAttribs
= 16;
410 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTemps
= 256;
411 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAddressRegs
= 1;
412 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
= 1024;
413 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
=
414 MIN2(ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
,
415 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
);
417 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeInstructions
= 1024;
418 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAluInstructions
= 1024;
419 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexInstructions
= 1024;
420 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexIndirections
= 1024;
421 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAttribs
= 12;
422 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTemps
= 256;
423 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAddressRegs
= 0;
424 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
= 1024;
425 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
=
426 MIN2(ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
,
427 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
);
429 /* Fragment shaders use real, 32-bit twos-complement integers for all
432 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMin
= 31;
433 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMax
= 30;
434 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.Precision
= 0;
435 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
436 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
439 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
440 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
441 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
442 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
443 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
= BRW_MAX_ABO
;
444 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
= BRW_MAX_ABO
;
445 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
= BRW_MAX_ABO
;
446 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
= BRW_MAX_ABO
;
447 ctx
->Const
.MaxCombinedAtomicBuffers
= 3 * BRW_MAX_ABO
;
450 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
451 * but we're not sure how it's actually done for vertex order,
452 * that affect provoking vertex decision. Always use last vertex
453 * convention for quad primitive which works as expected for now.
456 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
458 ctx
->Const
.NativeIntegers
= true;
459 ctx
->Const
.UniformBooleanTrue
= 1;
461 /* From the gen4 PRM, volume 4 page 127:
463 * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies
464 * the base address of the first element of the surface, computed in
465 * software by adding the surface base address to the byte offset of
466 * the element in the buffer."
468 * However, unaligned accesses are slower, so enforce buffer alignment.
470 ctx
->Const
.UniformBufferOffsetAlignment
= 16;
471 ctx
->Const
.TextureBufferOffsetAlignment
= 16;
474 ctx
->Const
.MaxVarying
= 32;
475 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= 128;
476 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= 64;
477 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= 128;
478 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= 128;
481 /* We want the GLSL compiler to emit code that uses condition codes */
482 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
483 ctx
->ShaderCompilerOptions
[i
].MaxIfDepth
= brw
->gen
< 6 ? 16 : UINT_MAX
;
484 ctx
->ShaderCompilerOptions
[i
].EmitCondCodes
= true;
485 ctx
->ShaderCompilerOptions
[i
].EmitNoNoise
= true;
486 ctx
->ShaderCompilerOptions
[i
].EmitNoMainReturn
= true;
487 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectInput
= true;
488 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectOutput
= true;
490 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectUniform
=
491 (i
== MESA_SHADER_FRAGMENT
);
492 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectTemp
=
493 (i
== MESA_SHADER_FRAGMENT
);
494 ctx
->ShaderCompilerOptions
[i
].LowerClipDistance
= true;
497 ctx
->ShaderCompilerOptions
[MESA_SHADER_VERTEX
].OptimizeForAOS
= true;
498 ctx
->ShaderCompilerOptions
[MESA_SHADER_GEOMETRY
].OptimizeForAOS
= true;
500 /* ARB_viewport_array */
501 if (brw
->gen
>= 7 && ctx
->API
== API_OPENGL_CORE
) {
502 ctx
->Const
.MaxViewports
= GEN7_NUM_VIEWPORTS
;
503 ctx
->Const
.ViewportSubpixelBits
= 0;
505 /* Cast to float before negating becuase MaxViewportWidth is unsigned.
507 ctx
->Const
.ViewportBounds
.Min
= -(float)ctx
->Const
.MaxViewportWidth
;
508 ctx
->Const
.ViewportBounds
.Max
= ctx
->Const
.MaxViewportWidth
;
513 * Process driconf (drirc) options, setting appropriate context flags.
515 * intelInitExtensions still pokes at optionCache directly, in order to
516 * avoid advertising various extensions. No flags are set, so it makes
517 * sense to continue doing that there.
520 brw_process_driconf_options(struct brw_context
*brw
)
522 struct gl_context
*ctx
= &brw
->ctx
;
524 driOptionCache
*options
= &brw
->optionCache
;
525 driParseConfigFiles(options
, &brw
->intelScreen
->optionCache
,
526 brw
->driContext
->driScreenPriv
->myNum
, "i965");
528 int bo_reuse_mode
= driQueryOptioni(options
, "bo_reuse");
529 switch (bo_reuse_mode
) {
530 case DRI_CONF_BO_REUSE_DISABLED
:
532 case DRI_CONF_BO_REUSE_ALL
:
533 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
537 if (!driQueryOptionb(options
, "hiz")) {
538 brw
->has_hiz
= false;
539 /* On gen6, you can only do separate stencil with HIZ. */
541 brw
->has_separate_stencil
= false;
544 if (driQueryOptionb(options
, "always_flush_batch")) {
545 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
546 brw
->always_flush_batch
= true;
549 if (driQueryOptionb(options
, "always_flush_cache")) {
550 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
551 brw
->always_flush_cache
= true;
554 if (driQueryOptionb(options
, "disable_throttling")) {
555 fprintf(stderr
, "disabling flush throttling\n");
556 brw
->disable_throttling
= true;
559 brw
->disable_derivative_optimization
=
560 driQueryOptionb(&brw
->optionCache
, "disable_derivative_optimization");
562 brw
->precompile
= driQueryOptionb(&brw
->optionCache
, "shader_precompile");
564 ctx
->Const
.ForceGLSLExtensionsWarn
=
565 driQueryOptionb(options
, "force_glsl_extensions_warn");
567 ctx
->Const
.DisableGLSLLineContinuations
=
568 driQueryOptionb(options
, "disable_glsl_line_continuations");
572 brwCreateContext(gl_api api
,
573 const struct gl_config
*mesaVis
,
574 __DRIcontext
*driContextPriv
,
575 unsigned major_version
,
576 unsigned minor_version
,
579 unsigned *dri_ctx_error
,
580 void *sharedContextPrivate
)
582 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
583 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
584 struct intel_screen
*screen
= sPriv
->driverPrivate
;
585 const struct brw_device_info
*devinfo
= screen
->devinfo
;
586 struct dd_function_table functions
;
588 /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel
589 * provides us with context reset notifications.
591 uint32_t allowed_flags
= __DRI_CTX_FLAG_DEBUG
592 | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
;
594 if (screen
->has_context_reset_notification
)
595 allowed_flags
|= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
;
597 if (flags
& ~allowed_flags
) {
598 *dri_ctx_error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
602 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
604 fprintf(stderr
, "%s: failed to alloc context\n", __FUNCTION__
);
605 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
609 driContextPriv
->driverPrivate
= brw
;
610 brw
->driContext
= driContextPriv
;
611 brw
->intelScreen
= screen
;
612 brw
->bufmgr
= screen
->bufmgr
;
614 brw
->gen
= devinfo
->gen
;
615 brw
->gt
= devinfo
->gt
;
616 brw
->is_g4x
= devinfo
->is_g4x
;
617 brw
->is_baytrail
= devinfo
->is_baytrail
;
618 brw
->is_haswell
= devinfo
->is_haswell
;
619 brw
->has_llc
= devinfo
->has_llc
;
620 brw
->has_hiz
= devinfo
->has_hiz_and_separate_stencil
;
621 brw
->has_separate_stencil
= devinfo
->has_hiz_and_separate_stencil
;
622 brw
->has_pln
= devinfo
->has_pln
;
623 brw
->has_compr4
= devinfo
->has_compr4
;
624 brw
->has_surface_tile_offset
= devinfo
->has_surface_tile_offset
;
625 brw
->has_negative_rhw_bug
= devinfo
->has_negative_rhw_bug
;
626 brw
->needs_unlit_centroid_workaround
=
627 devinfo
->needs_unlit_centroid_workaround
;
629 brw
->must_use_separate_stencil
= screen
->hw_must_use_separate_stencil
;
630 brw
->has_swizzling
= screen
->hw_has_swizzling
;
633 gen8_init_vtable_surface_functions(brw
);
634 gen7_init_vtable_sampler_functions(brw
);
635 brw
->vtbl
.emit_depth_stencil_hiz
= gen8_emit_depth_stencil_hiz
;
636 } else if (brw
->gen
>= 7) {
637 gen7_init_vtable_surface_functions(brw
);
638 gen7_init_vtable_sampler_functions(brw
);
639 brw
->vtbl
.emit_depth_stencil_hiz
= gen7_emit_depth_stencil_hiz
;
641 gen4_init_vtable_surface_functions(brw
);
642 gen4_init_vtable_sampler_functions(brw
);
643 brw
->vtbl
.emit_depth_stencil_hiz
= brw_emit_depth_stencil_hiz
;
646 brw_init_driver_functions(brw
, &functions
);
649 functions
.GetGraphicsResetStatus
= brw_get_graphics_reset_status
;
651 struct gl_context
*ctx
= &brw
->ctx
;
653 if (!_mesa_initialize_context(ctx
, api
, mesaVis
, shareCtx
, &functions
)) {
654 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
655 fprintf(stderr
, "%s: failed to init mesa context\n", __FUNCTION__
);
656 intelDestroyContext(driContextPriv
);
660 driContextSetFlags(ctx
, flags
);
662 /* Initialize the software rasterizer and helper modules.
664 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
665 * software fallbacks (which we have to support on legacy GL to do weird
666 * glDrawPixels(), glBitmap(), and other functions).
668 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
669 _swrast_CreateContext(ctx
);
672 _vbo_CreateContext(ctx
);
673 if (ctx
->swrast_context
) {
674 _tnl_CreateContext(ctx
);
675 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= _tnl_run_pipeline
;
676 _swsetup_CreateContext(ctx
);
678 /* Configure swrast to match hardware characteristics: */
679 _swrast_allow_pixel_fog(ctx
, false);
680 _swrast_allow_vertex_fog(ctx
, true);
683 _mesa_meta_init(ctx
);
685 brw_process_driconf_options(brw
);
686 brw_process_intel_debug_variable(brw
);
687 brw_initialize_context_constants(brw
);
689 ctx
->Const
.ResetStrategy
= notify_reset
690 ? GL_LOSE_CONTEXT_ON_RESET_ARB
: GL_NO_RESET_NOTIFICATION_ARB
;
692 /* Reinitialize the context point state. It depends on ctx->Const values. */
693 _mesa_init_point(ctx
);
697 intel_batchbuffer_init(brw
);
700 /* Create a new hardware context. Using a hardware context means that
701 * our GPU state will be saved/restored on context switch, allowing us
702 * to assume that the GPU is in the same state we left it in.
704 * This is required for transform feedback buffer offsets, query objects,
705 * and also allows us to reduce how much state we have to emit.
707 brw
->hw_ctx
= drm_intel_gem_context_create(brw
->bufmgr
);
710 fprintf(stderr
, "Gen6+ requires Kernel 3.6 or later.\n");
711 intelDestroyContext(driContextPriv
);
718 intelInitExtensions(ctx
);
720 brw_init_surface_formats(brw
);
722 if (brw
->is_g4x
|| brw
->gen
>= 5) {
723 brw
->CMD_VF_STATISTICS
= GM45_3DSTATE_VF_STATISTICS
;
724 brw
->CMD_PIPELINE_SELECT
= CMD_PIPELINE_SELECT_GM45
;
726 brw
->CMD_VF_STATISTICS
= GEN4_3DSTATE_VF_STATISTICS
;
727 brw
->CMD_PIPELINE_SELECT
= CMD_PIPELINE_SELECT_965
;
730 brw
->max_vs_threads
= devinfo
->max_vs_threads
;
731 brw
->max_gs_threads
= devinfo
->max_gs_threads
;
732 brw
->max_wm_threads
= devinfo
->max_wm_threads
;
733 brw
->urb
.size
= devinfo
->urb
.size
;
734 brw
->urb
.min_vs_entries
= devinfo
->urb
.min_vs_entries
;
735 brw
->urb
.max_vs_entries
= devinfo
->urb
.max_vs_entries
;
736 brw
->urb
.max_gs_entries
= devinfo
->urb
.max_gs_entries
;
738 /* Estimate the size of the mappable aperture into the GTT. There's an
739 * ioctl to get the whole GTT size, but not one to get the mappable subset.
740 * It turns out it's basically always 256MB, though some ancient hardware
743 uint32_t gtt_size
= 256 * 1024 * 1024;
745 /* We don't want to map two objects such that a memcpy between them would
746 * just fault one mapping in and then the other over and over forever. So
747 * we would need to divide the GTT size by 2. Additionally, some GTT is
748 * taken up by things like the framebuffer and the ringbuffer and such, so
749 * be more conservative.
751 brw
->max_gtt_map_object_size
= gtt_size
/ 4;
754 brw
->urb
.gen6_gs_previously_active
= false;
756 brw
->prim_restart
.in_progress
= false;
757 brw
->prim_restart
.enable_cut_index
= false;
758 brw
->gs
.enabled
= false;
761 brw
->curbe
.last_buf
= calloc(1, 4096);
762 brw
->curbe
.next_buf
= calloc(1, 4096);
765 ctx
->VertexProgram
._MaintainTnlProgram
= true;
766 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
768 brw_draw_init( brw
);
770 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0) {
771 /* Turn on some extra GL_ARB_debug_output generation. */
772 brw
->perf_debug
= true;
775 if ((flags
& __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
) != 0)
776 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
778 brw_fs_alloc_reg_sets(brw
);
779 brw_vec4_alloc_reg_set(brw
);
781 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
782 brw_init_shader_time(brw
);
784 _mesa_compute_version(ctx
);
786 _mesa_initialize_dispatch_tables(ctx
);
787 _mesa_initialize_vbo_vtxfmt(ctx
);
789 if (ctx
->Extensions
.AMD_performance_monitor
) {
790 brw_init_performance_monitors(brw
);
797 intelDestroyContext(__DRIcontext
* driContextPriv
)
799 struct brw_context
*brw
=
800 (struct brw_context
*) driContextPriv
->driverPrivate
;
801 struct gl_context
*ctx
= &brw
->ctx
;
803 assert(brw
); /* should never be null */
807 /* Dump a final BMP in case the application doesn't call SwapBuffers */
808 if (INTEL_DEBUG
& DEBUG_AUB
) {
809 intel_batchbuffer_flush(brw
);
810 aub_dump_bmp(&brw
->ctx
);
813 _mesa_meta_free(&brw
->ctx
);
815 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
816 /* Force a report. */
817 brw
->shader_time
.report_time
= 0;
819 brw_collect_and_report_shader_time(brw
);
820 brw_destroy_shader_time(brw
);
823 brw_destroy_state(brw
);
824 brw_draw_destroy(brw
);
826 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
827 drm_intel_bo_unreference(brw
->vs
.base
.const_bo
);
828 drm_intel_bo_unreference(brw
->wm
.base
.const_bo
);
830 free(brw
->curbe
.last_buf
);
831 free(brw
->curbe
.next_buf
);
833 drm_intel_gem_context_destroy(brw
->hw_ctx
);
835 if (ctx
->swrast_context
) {
836 _swsetup_DestroyContext(&brw
->ctx
);
837 _tnl_DestroyContext(&brw
->ctx
);
839 _vbo_DestroyContext(&brw
->ctx
);
841 if (ctx
->swrast_context
)
842 _swrast_DestroyContext(&brw
->ctx
);
844 intel_batchbuffer_free(brw
);
846 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
847 brw
->first_post_swapbuffers_batch
= NULL
;
849 driDestroyOptionCache(&brw
->optionCache
);
851 /* free the Mesa context */
852 _mesa_free_context_data(&brw
->ctx
);
855 driContextPriv
->driverPrivate
= NULL
;
859 intelUnbindContext(__DRIcontext
* driContextPriv
)
861 /* Unset current context and dispath table */
862 _mesa_make_current(NULL
, NULL
, NULL
);
868 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
869 * on window system framebuffers.
871 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
872 * your renderbuffer can do sRGB encode, and you can flip a switch that does
873 * sRGB encode if the renderbuffer can handle it. You can ask specifically
874 * for a visual where you're guaranteed to be capable, but it turns out that
875 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
876 * incapable ones, becuase there's no difference between the two in resources
877 * used. Applications thus get built that accidentally rely on the default
878 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
881 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
882 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
883 * So they removed the enable knob and made it "if the renderbuffer is sRGB
884 * capable, do sRGB encode". Then, for your window system renderbuffers, you
885 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
886 * and get no sRGB encode (assuming that both kinds of visual are available).
887 * Thus our choice to support sRGB by default on our visuals for desktop would
888 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
890 * Unfortunately, renderbuffer setup happens before a context is created. So
891 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
892 * context (without an sRGB visual, though we don't have sRGB visuals exposed
893 * yet), we go turn that back off before anyone finds out.
896 intel_gles3_srgb_workaround(struct brw_context
*brw
,
897 struct gl_framebuffer
*fb
)
899 struct gl_context
*ctx
= &brw
->ctx
;
901 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
904 /* Some day when we support the sRGB capable bit on visuals available for
905 * GLES, we'll need to respect that and not disable things here.
907 fb
->Visual
.sRGBCapable
= false;
908 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
909 if (fb
->Attachment
[i
].Renderbuffer
&&
910 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_B8G8R8A8_SRGB
) {
911 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_B8G8R8A8_UNORM
;
917 intelMakeCurrent(__DRIcontext
* driContextPriv
,
918 __DRIdrawable
* driDrawPriv
,
919 __DRIdrawable
* driReadPriv
)
921 struct brw_context
*brw
;
922 GET_CURRENT_CONTEXT(curCtx
);
925 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
929 /* According to the glXMakeCurrent() man page: "Pending commands to
930 * the previous context, if any, are flushed before it is released."
931 * But only flush if we're actually changing contexts.
933 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
937 if (driContextPriv
) {
938 struct gl_context
*ctx
= &brw
->ctx
;
939 struct gl_framebuffer
*fb
, *readFb
;
941 if (driDrawPriv
== NULL
&& driReadPriv
== NULL
) {
942 fb
= _mesa_get_incomplete_framebuffer();
943 readFb
= _mesa_get_incomplete_framebuffer();
945 fb
= driDrawPriv
->driverPrivate
;
946 readFb
= driReadPriv
->driverPrivate
;
947 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
948 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
951 /* The sRGB workaround changes the renderbuffer's format. We must change
952 * the format before the renderbuffer's miptree get's allocated, otherwise
953 * the formats of the renderbuffer and its miptree will differ.
955 intel_gles3_srgb_workaround(brw
, fb
);
956 intel_gles3_srgb_workaround(brw
, readFb
);
958 /* If the context viewport hasn't been initialized, force a call out to
959 * the loader to get buffers so we have a drawable size for the initial
961 if (!brw
->ctx
.ViewportInitialized
)
962 intel_prepare_render(brw
);
964 _mesa_make_current(ctx
, fb
, readFb
);
966 _mesa_make_current(NULL
, NULL
, NULL
);
973 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
974 __DRIdrawable
*drawable
)
977 /* MSAA and fast color clear are not supported, so don't waste time
978 * checking whether a resolve is needed.
983 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
984 struct intel_renderbuffer
*rb
;
986 /* Usually, only the back buffer will need to be downsampled. However,
987 * the front buffer will also need it if the user has rendered into it.
989 static const gl_buffer_index buffers
[2] = {
994 for (int i
= 0; i
< 2; ++i
) {
995 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
996 if (rb
== NULL
|| rb
->mt
== NULL
)
998 if (rb
->mt
->num_samples
<= 1)
999 intel_miptree_resolve_color(brw
, rb
->mt
);
1001 intel_renderbuffer_downsample(brw
, rb
);
1006 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1008 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1012 intel_query_dri2_buffers(struct brw_context
*brw
,
1013 __DRIdrawable
*drawable
,
1014 __DRIbuffer
**buffers
,
1018 intel_process_dri2_buffer(struct brw_context
*brw
,
1019 __DRIdrawable
*drawable
,
1020 __DRIbuffer
*buffer
,
1021 struct intel_renderbuffer
*rb
,
1022 const char *buffer_name
);
1025 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1028 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1030 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1031 struct intel_renderbuffer
*rb
;
1032 __DRIbuffer
*buffers
= NULL
;
1034 const char *region_name
;
1036 /* Set this up front, so that in case our buffers get invalidated
1037 * while we're getting new buffers, we don't clobber the stamp and
1038 * thus ignore the invalidate. */
1039 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1041 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1042 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1044 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1046 if (buffers
== NULL
)
1049 for (i
= 0; i
< count
; i
++) {
1050 switch (buffers
[i
].attachment
) {
1051 case __DRI_BUFFER_FRONT_LEFT
:
1052 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1053 region_name
= "dri2 front buffer";
1056 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1057 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1058 region_name
= "dri2 fake front buffer";
1061 case __DRI_BUFFER_BACK_LEFT
:
1062 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1063 region_name
= "dri2 back buffer";
1066 case __DRI_BUFFER_DEPTH
:
1067 case __DRI_BUFFER_HIZ
:
1068 case __DRI_BUFFER_DEPTH_STENCIL
:
1069 case __DRI_BUFFER_STENCIL
:
1070 case __DRI_BUFFER_ACCUM
:
1073 "unhandled buffer attach event, attachment type %d\n",
1074 buffers
[i
].attachment
);
1078 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1084 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1086 struct brw_context
*brw
= context
->driverPrivate
;
1087 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1089 /* Set this up front, so that in case our buffers get invalidated
1090 * while we're getting new buffers, we don't clobber the stamp and
1091 * thus ignore the invalidate. */
1092 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1094 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1095 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1097 if (screen
->image
.loader
)
1098 intel_update_image_buffers(brw
, drawable
);
1100 intel_update_dri2_buffers(brw
, drawable
);
1102 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1106 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1107 * state is required.
1110 intel_prepare_render(struct brw_context
*brw
)
1112 struct gl_context
*ctx
= &brw
->ctx
;
1113 __DRIcontext
*driContext
= brw
->driContext
;
1114 __DRIdrawable
*drawable
;
1116 drawable
= driContext
->driDrawablePriv
;
1117 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1118 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1119 intel_update_renderbuffers(driContext
, drawable
);
1120 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1123 drawable
= driContext
->driReadablePriv
;
1124 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1125 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1126 intel_update_renderbuffers(driContext
, drawable
);
1127 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1130 /* If we're currently rendering to the front buffer, the rendering
1131 * that will happen next will probably dirty the front buffer. So
1132 * mark it as dirty here.
1134 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
1135 brw
->front_buffer_dirty
= true;
1137 /* Wait for the swapbuffers before the one we just emitted, so we
1138 * don't get too many swaps outstanding for apps that are GPU-heavy
1139 * but not CPU-heavy.
1141 * We're using intelDRI2Flush (called from the loader before
1142 * swapbuffer) and glFlush (for front buffer rendering) as the
1143 * indicator that a frame is done and then throttle when we get
1144 * here as we prepare to render the next frame. At this point for
1145 * round trips for swap/copy and getting new buffers are done and
1146 * we'll spend less time waiting on the GPU.
1148 * Unfortunately, we don't have a handle to the batch containing
1149 * the swap, and getting our hands on that doesn't seem worth it,
1150 * so we just us the first batch we emitted after the last swap.
1152 if (brw
->need_throttle
&& brw
->first_post_swapbuffers_batch
) {
1153 if (!brw
->disable_throttling
)
1154 drm_intel_bo_wait_rendering(brw
->first_post_swapbuffers_batch
);
1155 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
1156 brw
->first_post_swapbuffers_batch
= NULL
;
1157 brw
->need_throttle
= false;
1162 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1164 * To determine which DRI buffers to request, examine the renderbuffers
1165 * attached to the drawable's framebuffer. Then request the buffers with
1166 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1168 * This is called from intel_update_renderbuffers().
1170 * \param drawable Drawable whose buffers are queried.
1171 * \param buffers [out] List of buffers returned by DRI2 query.
1172 * \param buffer_count [out] Number of buffers returned.
1174 * \see intel_update_renderbuffers()
1175 * \see DRI2GetBuffers()
1176 * \see DRI2GetBuffersWithFormat()
1179 intel_query_dri2_buffers(struct brw_context
*brw
,
1180 __DRIdrawable
*drawable
,
1181 __DRIbuffer
**buffers
,
1184 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1185 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1187 unsigned attachments
[8];
1189 struct intel_renderbuffer
*front_rb
;
1190 struct intel_renderbuffer
*back_rb
;
1192 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1193 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1195 memset(attachments
, 0, sizeof(attachments
));
1196 if ((brw_is_front_buffer_drawing(fb
) ||
1197 brw_is_front_buffer_reading(fb
) ||
1198 !back_rb
) && front_rb
) {
1199 /* If a fake front buffer is in use, then querying for
1200 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1201 * the real front buffer to the fake front buffer. So before doing the
1202 * query, we need to make sure all the pending drawing has landed in the
1203 * real front buffer.
1205 intel_batchbuffer_flush(brw
);
1206 intel_flush_front(&brw
->ctx
);
1208 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1209 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1210 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1211 /* We have pending front buffer rendering, but we aren't querying for a
1212 * front buffer. If the front buffer we have is a fake front buffer,
1213 * the X server is going to throw it away when it processes the query.
1214 * So before doing the query, make sure all the pending drawing has
1215 * landed in the real front buffer.
1217 intel_batchbuffer_flush(brw
);
1218 intel_flush_front(&brw
->ctx
);
1222 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1223 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1226 assert(i
<= ARRAY_SIZE(attachments
));
1228 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1233 drawable
->loaderPrivate
);
1237 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1239 * This is called from intel_update_renderbuffers().
1242 * DRI buffers whose attachment point is DRI2BufferStencil or
1243 * DRI2BufferDepthStencil are handled as special cases.
1245 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1246 * that is passed to intel_region_alloc_for_handle().
1248 * \see intel_update_renderbuffers()
1249 * \see intel_region_alloc_for_handle()
1252 intel_process_dri2_buffer(struct brw_context
*brw
,
1253 __DRIdrawable
*drawable
,
1254 __DRIbuffer
*buffer
,
1255 struct intel_renderbuffer
*rb
,
1256 const char *buffer_name
)
1258 struct intel_region
*region
= NULL
;
1259 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1264 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1266 /* We try to avoid closing and reopening the same BO name, because the first
1267 * use of a mapping of the buffer involves a bunch of page faulting which is
1268 * moderately expensive.
1270 if (num_samples
== 0) {
1273 rb
->mt
->region
->name
== buffer
->name
)
1276 if (rb
->singlesample_mt
&&
1277 rb
->singlesample_mt
->region
&&
1278 rb
->singlesample_mt
->region
->name
== buffer
->name
)
1282 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1284 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1285 buffer
->name
, buffer
->attachment
,
1286 buffer
->cpp
, buffer
->pitch
);
1289 intel_miptree_release(&rb
->mt
);
1290 region
= intel_region_alloc_for_handle(brw
->intelScreen
,
1299 "Failed to make region for returned DRI2 buffer "
1300 "(%dx%d, named %d).\n"
1301 "This is likely a bug in the X Server that will lead to a "
1303 drawable
->w
, drawable
->h
, buffer
->name
);
1307 intel_update_winsys_renderbuffer_miptree(brw
, rb
, region
);
1309 if (brw_is_front_buffer_drawing(fb
) &&
1310 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1311 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1312 rb
->Base
.Base
.NumSamples
> 1) {
1313 intel_renderbuffer_upsample(brw
, rb
);
1318 intel_region_release(®ion
);
1322 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1324 * To determine which DRI buffers to request, examine the renderbuffers
1325 * attached to the drawable's framebuffer. Then request the buffers from
1328 * This is called from intel_update_renderbuffers().
1330 * \param drawable Drawable whose buffers are queried.
1331 * \param buffers [out] List of buffers returned by DRI2 query.
1332 * \param buffer_count [out] Number of buffers returned.
1334 * \see intel_update_renderbuffers()
1338 intel_update_image_buffer(struct brw_context
*intel
,
1339 __DRIdrawable
*drawable
,
1340 struct intel_renderbuffer
*rb
,
1342 enum __DRIimageBufferMask buffer_type
)
1344 struct intel_region
*region
= buffer
->region
;
1345 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1350 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1352 /* Check and see if we're already bound to the right
1355 if (num_samples
== 0) {
1358 rb
->mt
->region
->bo
== region
->bo
)
1361 if (rb
->singlesample_mt
&&
1362 rb
->singlesample_mt
->region
&&
1363 rb
->singlesample_mt
->region
->bo
== region
->bo
)
1367 intel_update_winsys_renderbuffer_miptree(intel
, rb
, region
);
1369 if (brw_is_front_buffer_drawing(fb
) &&
1370 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1371 rb
->Base
.Base
.NumSamples
> 1) {
1372 intel_renderbuffer_upsample(intel
, rb
);
1377 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1379 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1380 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1381 struct intel_renderbuffer
*front_rb
;
1382 struct intel_renderbuffer
*back_rb
;
1383 struct __DRIimageList images
;
1384 unsigned int format
;
1385 uint32_t buffer_mask
= 0;
1387 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1388 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1391 format
= intel_rb_format(back_rb
);
1393 format
= intel_rb_format(front_rb
);
1397 if (front_rb
&& (brw_is_front_buffer_drawing(fb
) ||
1398 brw_is_front_buffer_reading(fb
) || !back_rb
)) {
1399 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1403 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1405 (*screen
->image
.loader
->getBuffers
) (drawable
,
1406 driGLFormatToImageFormat(format
),
1407 &drawable
->dri2
.stamp
,
1408 drawable
->loaderPrivate
,
1412 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1413 drawable
->w
= images
.front
->width
;
1414 drawable
->h
= images
.front
->height
;
1415 intel_update_image_buffer(brw
,
1419 __DRI_IMAGE_BUFFER_FRONT
);
1421 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1422 drawable
->w
= images
.back
->width
;
1423 drawable
->h
= images
.back
->height
;
1424 intel_update_image_buffer(brw
,
1428 __DRI_IMAGE_BUFFER_BACK
);