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/extensions.h"
38 #include "main/imports.h"
39 #include "main/macros.h"
40 #include "main/points.h"
41 #include "main/version.h"
42 #include "main/vtxfmt.h"
43 #include "main/texobj.h"
45 #include "vbo/vbo_context.h"
47 #include "drivers/common/driverfuncs.h"
48 #include "drivers/common/meta.h"
51 #include "brw_context.h"
52 #include "brw_defines.h"
54 #include "brw_state.h"
56 #include "intel_batchbuffer.h"
57 #include "intel_buffer_objects.h"
58 #include "intel_buffers.h"
59 #include "intel_fbo.h"
60 #include "intel_mipmap_tree.h"
61 #include "intel_pixel.h"
62 #include "intel_image.h"
63 #include "intel_tex.h"
64 #include "intel_tex_obj.h"
66 #include "swrast_setup/swrast_setup.h"
68 #include "tnl/t_pipeline.h"
69 #include "util/ralloc.h"
71 #include "glsl/nir/nir.h"
73 /***************************************
74 * Mesa's Driver Functions
75 ***************************************/
78 brw_query_samples_for_format(struct gl_context
*ctx
, GLenum target
,
79 GLenum internalFormat
, int samples
[16])
81 struct brw_context
*brw
= brw_context(ctx
);
103 assert(brw
->gen
< 6);
109 const char *const brw_vendor_string
= "Intel Open Source Technology Center";
112 brw_get_renderer_string(unsigned deviceID
)
115 static char buffer
[128];
119 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
120 #include "pci_ids/i965_pci_ids.h"
122 chipset
= "Unknown Intel Chipset";
126 (void) driGetRendererString(buffer
, chipset
, 0);
130 static const GLubyte
*
131 intel_get_string(struct gl_context
* ctx
, GLenum name
)
133 const struct brw_context
*const brw
= brw_context(ctx
);
137 return (GLubyte
*) brw_vendor_string
;
141 (GLubyte
*) brw_get_renderer_string(brw
->intelScreen
->deviceID
);
149 intel_viewport(struct gl_context
*ctx
)
151 struct brw_context
*brw
= brw_context(ctx
);
152 __DRIcontext
*driContext
= brw
->driContext
;
154 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
155 dri2InvalidateDrawable(driContext
->driDrawablePriv
);
156 dri2InvalidateDrawable(driContext
->driReadablePriv
);
161 intel_update_state(struct gl_context
* ctx
, GLuint new_state
)
163 struct brw_context
*brw
= brw_context(ctx
);
164 struct intel_texture_object
*tex_obj
;
165 struct intel_renderbuffer
*depth_irb
;
167 if (ctx
->swrast_context
)
168 _swrast_InvalidateState(ctx
, new_state
);
169 _vbo_InvalidateState(ctx
, new_state
);
171 brw
->NewGLState
|= new_state
;
173 _mesa_unlock_context_textures(ctx
);
175 /* Resolve the depth buffer's HiZ buffer. */
176 depth_irb
= intel_get_renderbuffer(ctx
->DrawBuffer
, BUFFER_DEPTH
);
178 intel_renderbuffer_resolve_hiz(brw
, depth_irb
);
180 /* Resolve depth buffer and render cache of each enabled texture. */
181 int maxEnabledUnit
= ctx
->Texture
._MaxEnabledTexImageUnit
;
182 for (int i
= 0; i
<= maxEnabledUnit
; i
++) {
183 if (!ctx
->Texture
.Unit
[i
]._Current
)
185 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
186 if (!tex_obj
|| !tex_obj
->mt
)
188 intel_miptree_all_slices_resolve_depth(brw
, tex_obj
->mt
);
189 intel_miptree_resolve_color(brw
, tex_obj
->mt
);
190 brw_render_cache_set_check_flush(brw
, tex_obj
->mt
->bo
);
193 _mesa_lock_context_textures(ctx
);
196 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
199 intel_flush_front(struct gl_context
*ctx
)
201 struct brw_context
*brw
= brw_context(ctx
);
202 __DRIcontext
*driContext
= brw
->driContext
;
203 __DRIdrawable
*driDrawable
= driContext
->driDrawablePriv
;
204 __DRIscreen
*const screen
= brw
->intelScreen
->driScrnPriv
;
206 if (brw
->front_buffer_dirty
&& _mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
207 if (flushFront(screen
) && driDrawable
&&
208 driDrawable
->loaderPrivate
) {
210 /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
212 * This potentially resolves both front and back buffer. It
213 * is unnecessary to resolve the back, but harms nothing except
214 * performance. And no one cares about front-buffer render
217 intel_resolve_for_dri2_flush(brw
, driDrawable
);
218 intel_batchbuffer_flush(brw
);
220 flushFront(screen
)(driDrawable
, driDrawable
->loaderPrivate
);
222 /* We set the dirty bit in intel_prepare_render() if we're
223 * front buffer rendering once we get there.
225 brw
->front_buffer_dirty
= false;
231 intel_glFlush(struct gl_context
*ctx
)
233 struct brw_context
*brw
= brw_context(ctx
);
235 intel_batchbuffer_flush(brw
);
236 intel_flush_front(ctx
);
238 brw
->need_flush_throttle
= true;
242 intel_finish(struct gl_context
* ctx
)
244 struct brw_context
*brw
= brw_context(ctx
);
248 if (brw
->batch
.last_bo
)
249 drm_intel_bo_wait_rendering(brw
->batch
.last_bo
);
253 brw_init_driver_functions(struct brw_context
*brw
,
254 struct dd_function_table
*functions
)
256 _mesa_init_driver_functions(functions
);
258 /* GLX uses DRI2 invalidate events to handle window resizing.
259 * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
260 * which doesn't provide a mechanism for snooping the event queues.
262 * So EGL still relies on viewport hacks to handle window resizing.
263 * This should go away with DRI3000.
265 if (!brw
->driContext
->driScreenPriv
->dri2
.useInvalidate
)
266 functions
->Viewport
= intel_viewport
;
268 functions
->Flush
= intel_glFlush
;
269 functions
->Finish
= intel_finish
;
270 functions
->GetString
= intel_get_string
;
271 functions
->UpdateState
= intel_update_state
;
273 intelInitTextureFuncs(functions
);
274 intelInitTextureImageFuncs(functions
);
275 intelInitTextureSubImageFuncs(functions
);
276 intelInitTextureCopyImageFuncs(functions
);
277 intelInitCopyImageFuncs(functions
);
278 intelInitClearFuncs(functions
);
279 intelInitBufferFuncs(functions
);
280 intelInitPixelFuncs(functions
);
281 intelInitBufferObjectFuncs(functions
);
282 intel_init_syncobj_functions(functions
);
283 brw_init_object_purgeable_functions(functions
);
285 brwInitFragProgFuncs( functions
);
286 brw_init_common_queryobj_functions(functions
);
288 gen6_init_queryobj_functions(functions
);
290 gen4_init_queryobj_functions(functions
);
292 functions
->QuerySamplesForFormat
= brw_query_samples_for_format
;
294 functions
->NewTransformFeedback
= brw_new_transform_feedback
;
295 functions
->DeleteTransformFeedback
= brw_delete_transform_feedback
;
296 functions
->GetTransformFeedbackVertexCount
=
297 brw_get_transform_feedback_vertex_count
;
299 functions
->BeginTransformFeedback
= gen7_begin_transform_feedback
;
300 functions
->EndTransformFeedback
= gen7_end_transform_feedback
;
301 functions
->PauseTransformFeedback
= gen7_pause_transform_feedback
;
302 functions
->ResumeTransformFeedback
= gen7_resume_transform_feedback
;
304 functions
->BeginTransformFeedback
= brw_begin_transform_feedback
;
305 functions
->EndTransformFeedback
= brw_end_transform_feedback
;
309 functions
->GetSamplePosition
= gen6_get_sample_position
;
313 brw_initialize_context_constants(struct brw_context
*brw
)
315 struct gl_context
*ctx
= &brw
->ctx
;
317 unsigned max_samplers
=
318 brw
->gen
>= 8 || brw
->is_haswell
? BRW_MAX_TEX_UNIT
: 16;
320 ctx
->Const
.QueryCounterBits
.Timestamp
= 36;
322 ctx
->Const
.StripTextureBorder
= true;
324 ctx
->Const
.MaxDualSourceDrawBuffers
= 1;
325 ctx
->Const
.MaxDrawBuffers
= BRW_MAX_DRAW_BUFFERS
;
326 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
= max_samplers
;
327 ctx
->Const
.MaxTextureCoordUnits
= 8; /* Mesa limit */
328 ctx
->Const
.MaxTextureUnits
=
329 MIN2(ctx
->Const
.MaxTextureCoordUnits
,
330 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
);
331 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
= max_samplers
;
333 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= max_samplers
;
335 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= 0;
336 if (_mesa_extension_override_enables
.ARB_compute_shader
) {
337 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= BRW_MAX_TEX_UNIT
;
338 ctx
->Const
.MaxUniformBufferBindings
+= 12;
340 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= 0;
342 ctx
->Const
.MaxCombinedTextureImageUnits
=
343 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
344 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
+
345 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
346 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
348 ctx
->Const
.MaxTextureLevels
= 14; /* 8192 */
349 if (ctx
->Const
.MaxTextureLevels
> MAX_TEXTURE_LEVELS
)
350 ctx
->Const
.MaxTextureLevels
= MAX_TEXTURE_LEVELS
;
351 ctx
->Const
.Max3DTextureLevels
= 12; /* 2048 */
352 ctx
->Const
.MaxCubeTextureLevels
= 14; /* 8192 */
353 ctx
->Const
.MaxTextureMbytes
= 1536;
356 ctx
->Const
.MaxArrayTextureLayers
= 2048;
358 ctx
->Const
.MaxArrayTextureLayers
= 512;
360 ctx
->Const
.MaxTextureRectSize
= 1 << 12;
362 ctx
->Const
.MaxTextureMaxAnisotropy
= 16.0;
364 ctx
->Const
.MaxRenderbufferSize
= 8192;
366 /* Hardware only supports a limited number of transform feedback buffers.
367 * So we need to override the Mesa default (which is based only on software
370 ctx
->Const
.MaxTransformFeedbackBuffers
= BRW_MAX_SOL_BUFFERS
;
372 /* On Gen6, in the worst case, we use up one binding table entry per
373 * transform feedback component (see comments above the definition of
374 * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value
375 * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to
376 * BRW_MAX_SOL_BINDINGS.
378 * In "separate components" mode, we need to divide this value by
379 * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries
380 * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS.
382 ctx
->Const
.MaxTransformFeedbackInterleavedComponents
= BRW_MAX_SOL_BINDINGS
;
383 ctx
->Const
.MaxTransformFeedbackSeparateComponents
=
384 BRW_MAX_SOL_BINDINGS
/ BRW_MAX_SOL_BUFFERS
;
386 ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
= true;
389 const int *msaa_modes
= intel_supported_msaa_modes(brw
->intelScreen
);
390 const int clamp_max_samples
=
391 driQueryOptioni(&brw
->optionCache
, "clamp_max_samples");
393 if (clamp_max_samples
< 0) {
394 max_samples
= msaa_modes
[0];
396 /* Select the largest supported MSAA mode that does not exceed
400 for (int i
= 0; msaa_modes
[i
] != 0; ++i
) {
401 if (msaa_modes
[i
] <= clamp_max_samples
) {
402 max_samples
= msaa_modes
[i
];
408 ctx
->Const
.MaxSamples
= max_samples
;
409 ctx
->Const
.MaxColorTextureSamples
= max_samples
;
410 ctx
->Const
.MaxDepthTextureSamples
= max_samples
;
411 ctx
->Const
.MaxIntegerSamples
= max_samples
;
413 /* gen6_set_sample_maps() sets SampleMap{2,4,8}x variables which are used
414 * to map indices of rectangular grid to sample numbers within a pixel.
415 * These variables are used by GL_EXT_framebuffer_multisample_blit_scaled
416 * extension implementation. For more details see the comment above
417 * gen6_set_sample_maps() definition.
419 gen6_set_sample_maps(ctx
);
422 ctx
->Const
.MaxProgramTextureGatherComponents
= 4;
423 else if (brw
->gen
== 6)
424 ctx
->Const
.MaxProgramTextureGatherComponents
= 1;
426 ctx
->Const
.MinLineWidth
= 1.0;
427 ctx
->Const
.MinLineWidthAA
= 1.0;
428 if (brw
->gen
>= 9 || brw
->is_cherryview
) {
429 ctx
->Const
.MaxLineWidth
= 40.0;
430 ctx
->Const
.MaxLineWidthAA
= 40.0;
431 ctx
->Const
.LineWidthGranularity
= 0.125;
432 } else if (brw
->gen
>= 6) {
433 ctx
->Const
.MaxLineWidth
= 7.375;
434 ctx
->Const
.MaxLineWidthAA
= 7.375;
435 ctx
->Const
.LineWidthGranularity
= 0.125;
437 ctx
->Const
.MaxLineWidth
= 7.0;
438 ctx
->Const
.MaxLineWidthAA
= 7.0;
439 ctx
->Const
.LineWidthGranularity
= 0.5;
442 ctx
->Const
.MinPointSize
= 1.0;
443 ctx
->Const
.MinPointSizeAA
= 1.0;
444 ctx
->Const
.MaxPointSize
= 255.0;
445 ctx
->Const
.MaxPointSizeAA
= 255.0;
446 ctx
->Const
.PointSizeGranularity
= 1.0;
448 if (brw
->gen
>= 5 || brw
->is_g4x
)
449 ctx
->Const
.MaxClipPlanes
= 8;
451 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeInstructions
= 16 * 1024;
452 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAluInstructions
= 0;
453 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexInstructions
= 0;
454 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexIndirections
= 0;
455 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAluInstructions
= 0;
456 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexInstructions
= 0;
457 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexIndirections
= 0;
458 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAttribs
= 16;
459 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTemps
= 256;
460 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAddressRegs
= 1;
461 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
= 1024;
462 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
=
463 MIN2(ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
,
464 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
);
466 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeInstructions
= 1024;
467 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAluInstructions
= 1024;
468 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexInstructions
= 1024;
469 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexIndirections
= 1024;
470 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAttribs
= 12;
471 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTemps
= 256;
472 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAddressRegs
= 0;
473 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
= 1024;
474 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
=
475 MIN2(ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
,
476 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
);
478 /* Fragment shaders use real, 32-bit twos-complement integers for all
481 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMin
= 31;
482 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMax
= 30;
483 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.Precision
= 0;
484 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
485 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
487 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMin
= 31;
488 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMax
= 30;
489 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.Precision
= 0;
490 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
491 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
494 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
495 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
496 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
497 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
498 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
= BRW_MAX_ABO
;
499 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
= BRW_MAX_ABO
;
500 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
= BRW_MAX_ABO
;
501 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
= BRW_MAX_ABO
;
502 ctx
->Const
.MaxCombinedAtomicBuffers
= 3 * BRW_MAX_ABO
;
505 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
506 * but we're not sure how it's actually done for vertex order,
507 * that affect provoking vertex decision. Always use last vertex
508 * convention for quad primitive which works as expected for now.
511 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
513 ctx
->Const
.NativeIntegers
= true;
514 ctx
->Const
.VertexID_is_zero_based
= true;
516 /* Regarding the CMP instruction, the Ivybridge PRM says:
518 * "For each enabled channel 0b or 1b is assigned to the appropriate flag
519 * bit and 0/all zeros or all ones (e.g, byte 0xFF, word 0xFFFF, DWord
520 * 0xFFFFFFFF) is assigned to dst."
522 * but PRMs for earlier generations say
524 * "In dword format, one GRF may store up to 8 results. When the register
525 * is used later as a vector of Booleans, as only LSB at each channel
526 * contains meaning [sic] data, software should make sure all higher bits
527 * are masked out (e.g. by 'and-ing' an [sic] 0x01 constant)."
529 * We select the representation of a true boolean uniform to be ~0, and fix
530 * the results of Gen <= 5 CMP instruction's with -(result & 1).
532 ctx
->Const
.UniformBooleanTrue
= ~0;
534 /* From the gen4 PRM, volume 4 page 127:
536 * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies
537 * the base address of the first element of the surface, computed in
538 * software by adding the surface base address to the byte offset of
539 * the element in the buffer."
541 * However, unaligned accesses are slower, so enforce buffer alignment.
543 ctx
->Const
.UniformBufferOffsetAlignment
= 16;
544 ctx
->Const
.TextureBufferOffsetAlignment
= 16;
547 ctx
->Const
.MaxVarying
= 32;
548 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= 128;
549 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= 64;
550 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= 128;
551 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= 128;
554 static const nir_shader_compiler_options nir_options
= {
555 .native_integers
= true,
556 /* In order to help allow for better CSE at the NIR level we tell NIR
557 * to split all ffma instructions during opt_algebraic and we then
558 * re-combine them as a later step.
564 /* We want the GLSL compiler to emit code that uses condition codes */
565 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
566 ctx
->Const
.ShaderCompilerOptions
[i
].MaxIfDepth
= brw
->gen
< 6 ? 16 : UINT_MAX
;
567 ctx
->Const
.ShaderCompilerOptions
[i
].EmitCondCodes
= true;
568 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoNoise
= true;
569 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoMainReturn
= true;
570 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectInput
= true;
571 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectOutput
=
572 (i
== MESA_SHADER_FRAGMENT
);
573 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectTemp
=
574 (i
== MESA_SHADER_FRAGMENT
);
575 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectUniform
= false;
576 ctx
->Const
.ShaderCompilerOptions
[i
].LowerClipDistance
= true;
579 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_VERTEX
].OptimizeForAOS
= true;
580 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_GEOMETRY
].OptimizeForAOS
= true;
582 if (brw
->scalar_vs
) {
583 /* If we're using the scalar backend for vertex shaders, we need to
584 * configure these accordingly.
586 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_VERTEX
].EmitNoIndirectOutput
= true;
587 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_VERTEX
].EmitNoIndirectTemp
= true;
588 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_VERTEX
].OptimizeForAOS
= false;
590 if (brw_env_var_as_boolean("INTEL_USE_NIR", false))
591 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_VERTEX
].NirOptions
= &nir_options
;
594 if (brw_env_var_as_boolean("INTEL_USE_NIR", true))
595 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_FRAGMENT
].NirOptions
= &nir_options
;
597 /* ARB_viewport_array */
598 if (brw
->gen
>= 7 && ctx
->API
== API_OPENGL_CORE
) {
599 ctx
->Const
.MaxViewports
= GEN7_NUM_VIEWPORTS
;
600 ctx
->Const
.ViewportSubpixelBits
= 0;
602 /* Cast to float before negating becuase MaxViewportWidth is unsigned.
604 ctx
->Const
.ViewportBounds
.Min
= -(float)ctx
->Const
.MaxViewportWidth
;
605 ctx
->Const
.ViewportBounds
.Max
= ctx
->Const
.MaxViewportWidth
;
608 /* ARB_gpu_shader5 */
610 ctx
->Const
.MaxVertexStreams
= MIN2(4, MAX_VERTEX_STREAMS
);
614 * Process driconf (drirc) options, setting appropriate context flags.
616 * intelInitExtensions still pokes at optionCache directly, in order to
617 * avoid advertising various extensions. No flags are set, so it makes
618 * sense to continue doing that there.
621 brw_process_driconf_options(struct brw_context
*brw
)
623 struct gl_context
*ctx
= &brw
->ctx
;
625 driOptionCache
*options
= &brw
->optionCache
;
626 driParseConfigFiles(options
, &brw
->intelScreen
->optionCache
,
627 brw
->driContext
->driScreenPriv
->myNum
, "i965");
629 int bo_reuse_mode
= driQueryOptioni(options
, "bo_reuse");
630 switch (bo_reuse_mode
) {
631 case DRI_CONF_BO_REUSE_DISABLED
:
633 case DRI_CONF_BO_REUSE_ALL
:
634 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
638 if (!driQueryOptionb(options
, "hiz")) {
639 brw
->has_hiz
= false;
640 /* On gen6, you can only do separate stencil with HIZ. */
642 brw
->has_separate_stencil
= false;
645 if (driQueryOptionb(options
, "always_flush_batch")) {
646 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
647 brw
->always_flush_batch
= true;
650 if (driQueryOptionb(options
, "always_flush_cache")) {
651 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
652 brw
->always_flush_cache
= true;
655 if (driQueryOptionb(options
, "disable_throttling")) {
656 fprintf(stderr
, "disabling flush throttling\n");
657 brw
->disable_throttling
= true;
660 brw
->precompile
= driQueryOptionb(&brw
->optionCache
, "shader_precompile");
662 ctx
->Const
.ForceGLSLExtensionsWarn
=
663 driQueryOptionb(options
, "force_glsl_extensions_warn");
665 ctx
->Const
.DisableGLSLLineContinuations
=
666 driQueryOptionb(options
, "disable_glsl_line_continuations");
668 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
=
669 driQueryOptionb(options
, "allow_glsl_extension_directive_midshader");
672 /* drop when libdrm 2.4.61 is released */
673 #ifndef I915_PARAM_REVISION
674 #define I915_PARAM_REVISION 32
678 brw_get_revision(int fd
)
680 struct drm_i915_getparam gp
;
684 memset(&gp
, 0, sizeof(gp
));
685 gp
.param
= I915_PARAM_REVISION
;
686 gp
.value
= &revision
;
688 ret
= drmCommandWriteRead(fd
, DRM_I915_GETPARAM
, &gp
, sizeof(gp
));
696 brwCreateContext(gl_api api
,
697 const struct gl_config
*mesaVis
,
698 __DRIcontext
*driContextPriv
,
699 unsigned major_version
,
700 unsigned minor_version
,
703 unsigned *dri_ctx_error
,
704 void *sharedContextPrivate
)
706 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
707 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
708 struct intel_screen
*screen
= sPriv
->driverPrivate
;
709 const struct brw_device_info
*devinfo
= screen
->devinfo
;
710 struct dd_function_table functions
;
712 /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel
713 * provides us with context reset notifications.
715 uint32_t allowed_flags
= __DRI_CTX_FLAG_DEBUG
716 | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
;
718 if (screen
->has_context_reset_notification
)
719 allowed_flags
|= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
;
721 if (flags
& ~allowed_flags
) {
722 *dri_ctx_error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
726 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
728 fprintf(stderr
, "%s: failed to alloc context\n", __func__
);
729 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
733 driContextPriv
->driverPrivate
= brw
;
734 brw
->driContext
= driContextPriv
;
735 brw
->intelScreen
= screen
;
736 brw
->bufmgr
= screen
->bufmgr
;
738 brw
->gen
= devinfo
->gen
;
739 brw
->gt
= devinfo
->gt
;
740 brw
->is_g4x
= devinfo
->is_g4x
;
741 brw
->is_baytrail
= devinfo
->is_baytrail
;
742 brw
->is_haswell
= devinfo
->is_haswell
;
743 brw
->is_cherryview
= devinfo
->is_cherryview
;
744 brw
->has_llc
= devinfo
->has_llc
;
745 brw
->has_hiz
= devinfo
->has_hiz_and_separate_stencil
;
746 brw
->has_separate_stencil
= devinfo
->has_hiz_and_separate_stencil
;
747 brw
->has_pln
= devinfo
->has_pln
;
748 brw
->has_compr4
= devinfo
->has_compr4
;
749 brw
->has_surface_tile_offset
= devinfo
->has_surface_tile_offset
;
750 brw
->has_negative_rhw_bug
= devinfo
->has_negative_rhw_bug
;
751 brw
->needs_unlit_centroid_workaround
=
752 devinfo
->needs_unlit_centroid_workaround
;
753 brw
->revision
= brw_get_revision(sPriv
->fd
);
755 brw
->must_use_separate_stencil
= screen
->hw_must_use_separate_stencil
;
756 brw
->has_swizzling
= screen
->hw_has_swizzling
;
758 brw
->vs
.base
.stage
= MESA_SHADER_VERTEX
;
759 brw
->gs
.base
.stage
= MESA_SHADER_GEOMETRY
;
760 brw
->wm
.base
.stage
= MESA_SHADER_FRAGMENT
;
762 gen8_init_vtable_surface_functions(brw
);
763 brw
->vtbl
.emit_depth_stencil_hiz
= gen8_emit_depth_stencil_hiz
;
764 } else if (brw
->gen
>= 7) {
765 gen7_init_vtable_surface_functions(brw
);
766 brw
->vtbl
.emit_depth_stencil_hiz
= gen7_emit_depth_stencil_hiz
;
767 } else if (brw
->gen
>= 6) {
768 gen6_init_vtable_surface_functions(brw
);
769 brw
->vtbl
.emit_depth_stencil_hiz
= gen6_emit_depth_stencil_hiz
;
771 gen4_init_vtable_surface_functions(brw
);
772 brw
->vtbl
.emit_depth_stencil_hiz
= brw_emit_depth_stencil_hiz
;
775 brw_init_driver_functions(brw
, &functions
);
778 functions
.GetGraphicsResetStatus
= brw_get_graphics_reset_status
;
780 struct gl_context
*ctx
= &brw
->ctx
;
782 if (!_mesa_initialize_context(ctx
, api
, mesaVis
, shareCtx
, &functions
)) {
783 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
784 fprintf(stderr
, "%s: failed to init mesa context\n", __func__
);
785 intelDestroyContext(driContextPriv
);
789 driContextSetFlags(ctx
, flags
);
791 /* Initialize the software rasterizer and helper modules.
793 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
794 * software fallbacks (which we have to support on legacy GL to do weird
795 * glDrawPixels(), glBitmap(), and other functions).
797 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
798 _swrast_CreateContext(ctx
);
801 _vbo_CreateContext(ctx
);
802 if (ctx
->swrast_context
) {
803 _tnl_CreateContext(ctx
);
804 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= _tnl_run_pipeline
;
805 _swsetup_CreateContext(ctx
);
807 /* Configure swrast to match hardware characteristics: */
808 _swrast_allow_pixel_fog(ctx
, false);
809 _swrast_allow_vertex_fog(ctx
, true);
812 _mesa_meta_init(ctx
);
814 brw_process_driconf_options(brw
);
815 brw_process_intel_debug_variable(brw
);
817 if (brw
->gen
>= 8 && !(INTEL_DEBUG
& DEBUG_VEC4VS
))
818 brw
->scalar_vs
= true;
820 brw_initialize_context_constants(brw
);
822 ctx
->Const
.ResetStrategy
= notify_reset
823 ? GL_LOSE_CONTEXT_ON_RESET_ARB
: GL_NO_RESET_NOTIFICATION_ARB
;
825 /* Reinitialize the context point state. It depends on ctx->Const values. */
826 _mesa_init_point(ctx
);
830 intel_batchbuffer_init(brw
);
833 /* Create a new hardware context. Using a hardware context means that
834 * our GPU state will be saved/restored on context switch, allowing us
835 * to assume that the GPU is in the same state we left it in.
837 * This is required for transform feedback buffer offsets, query objects,
838 * and also allows us to reduce how much state we have to emit.
840 brw
->hw_ctx
= drm_intel_gem_context_create(brw
->bufmgr
);
843 fprintf(stderr
, "Gen6+ requires Kernel 3.6 or later.\n");
844 intelDestroyContext(driContextPriv
);
851 intelInitExtensions(ctx
);
853 brw_init_surface_formats(brw
);
855 brw
->max_vs_threads
= devinfo
->max_vs_threads
;
856 brw
->max_hs_threads
= devinfo
->max_hs_threads
;
857 brw
->max_ds_threads
= devinfo
->max_ds_threads
;
858 brw
->max_gs_threads
= devinfo
->max_gs_threads
;
859 brw
->max_wm_threads
= devinfo
->max_wm_threads
;
860 brw
->urb
.size
= devinfo
->urb
.size
;
861 brw
->urb
.min_vs_entries
= devinfo
->urb
.min_vs_entries
;
862 brw
->urb
.max_vs_entries
= devinfo
->urb
.max_vs_entries
;
863 brw
->urb
.max_hs_entries
= devinfo
->urb
.max_hs_entries
;
864 brw
->urb
.max_ds_entries
= devinfo
->urb
.max_ds_entries
;
865 brw
->urb
.max_gs_entries
= devinfo
->urb
.max_gs_entries
;
867 /* Estimate the size of the mappable aperture into the GTT. There's an
868 * ioctl to get the whole GTT size, but not one to get the mappable subset.
869 * It turns out it's basically always 256MB, though some ancient hardware
872 uint32_t gtt_size
= 256 * 1024 * 1024;
874 /* We don't want to map two objects such that a memcpy between them would
875 * just fault one mapping in and then the other over and over forever. So
876 * we would need to divide the GTT size by 2. Additionally, some GTT is
877 * taken up by things like the framebuffer and the ringbuffer and such, so
878 * be more conservative.
880 brw
->max_gtt_map_object_size
= gtt_size
/ 4;
883 brw
->urb
.gs_present
= false;
885 brw
->prim_restart
.in_progress
= false;
886 brw
->prim_restart
.enable_cut_index
= false;
887 brw
->gs
.enabled
= false;
888 brw
->sf
.viewport_transform_enable
= true;
890 ctx
->VertexProgram
._MaintainTnlProgram
= true;
891 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
893 brw_draw_init( brw
);
895 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0) {
896 /* Turn on some extra GL_ARB_debug_output generation. */
897 brw
->perf_debug
= true;
900 if ((flags
& __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
) != 0)
901 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
903 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
904 brw_init_shader_time(brw
);
906 _mesa_compute_version(ctx
);
908 _mesa_initialize_dispatch_tables(ctx
);
909 _mesa_initialize_vbo_vtxfmt(ctx
);
911 if (ctx
->Extensions
.AMD_performance_monitor
) {
912 brw_init_performance_monitors(brw
);
915 vbo_use_buffer_objects(ctx
);
916 vbo_always_unmap_buffers(ctx
);
922 intelDestroyContext(__DRIcontext
* driContextPriv
)
924 struct brw_context
*brw
=
925 (struct brw_context
*) driContextPriv
->driverPrivate
;
926 struct gl_context
*ctx
= &brw
->ctx
;
928 /* Dump a final BMP in case the application doesn't call SwapBuffers */
929 if (INTEL_DEBUG
& DEBUG_AUB
) {
930 intel_batchbuffer_flush(brw
);
931 aub_dump_bmp(&brw
->ctx
);
934 _mesa_meta_free(&brw
->ctx
);
935 brw_meta_fast_clear_free(brw
);
937 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
938 /* Force a report. */
939 brw
->shader_time
.report_time
= 0;
941 brw_collect_and_report_shader_time(brw
);
942 brw_destroy_shader_time(brw
);
945 brw_destroy_state(brw
);
946 brw_draw_destroy(brw
);
948 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
949 if (brw
->vs
.base
.scratch_bo
)
950 drm_intel_bo_unreference(brw
->vs
.base
.scratch_bo
);
951 if (brw
->gs
.base
.scratch_bo
)
952 drm_intel_bo_unreference(brw
->gs
.base
.scratch_bo
);
953 if (brw
->wm
.base
.scratch_bo
)
954 drm_intel_bo_unreference(brw
->wm
.base
.scratch_bo
);
956 drm_intel_gem_context_destroy(brw
->hw_ctx
);
958 if (ctx
->swrast_context
) {
959 _swsetup_DestroyContext(&brw
->ctx
);
960 _tnl_DestroyContext(&brw
->ctx
);
962 _vbo_DestroyContext(&brw
->ctx
);
964 if (ctx
->swrast_context
)
965 _swrast_DestroyContext(&brw
->ctx
);
967 intel_batchbuffer_free(brw
);
969 drm_intel_bo_unreference(brw
->throttle_batch
[1]);
970 drm_intel_bo_unreference(brw
->throttle_batch
[0]);
971 brw
->throttle_batch
[1] = NULL
;
972 brw
->throttle_batch
[0] = NULL
;
974 driDestroyOptionCache(&brw
->optionCache
);
976 /* free the Mesa context */
977 _mesa_free_context_data(&brw
->ctx
);
980 driContextPriv
->driverPrivate
= NULL
;
984 intelUnbindContext(__DRIcontext
* driContextPriv
)
986 /* Unset current context and dispath table */
987 _mesa_make_current(NULL
, NULL
, NULL
);
993 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
994 * on window system framebuffers.
996 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
997 * your renderbuffer can do sRGB encode, and you can flip a switch that does
998 * sRGB encode if the renderbuffer can handle it. You can ask specifically
999 * for a visual where you're guaranteed to be capable, but it turns out that
1000 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
1001 * incapable ones, becuase there's no difference between the two in resources
1002 * used. Applications thus get built that accidentally rely on the default
1003 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
1006 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
1007 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
1008 * So they removed the enable knob and made it "if the renderbuffer is sRGB
1009 * capable, do sRGB encode". Then, for your window system renderbuffers, you
1010 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
1011 * and get no sRGB encode (assuming that both kinds of visual are available).
1012 * Thus our choice to support sRGB by default on our visuals for desktop would
1013 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
1015 * Unfortunately, renderbuffer setup happens before a context is created. So
1016 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
1017 * context (without an sRGB visual, though we don't have sRGB visuals exposed
1018 * yet), we go turn that back off before anyone finds out.
1021 intel_gles3_srgb_workaround(struct brw_context
*brw
,
1022 struct gl_framebuffer
*fb
)
1024 struct gl_context
*ctx
= &brw
->ctx
;
1026 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
1029 /* Some day when we support the sRGB capable bit on visuals available for
1030 * GLES, we'll need to respect that and not disable things here.
1032 fb
->Visual
.sRGBCapable
= false;
1033 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
1034 if (fb
->Attachment
[i
].Renderbuffer
&&
1035 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_B8G8R8A8_SRGB
) {
1036 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_B8G8R8A8_UNORM
;
1042 intelMakeCurrent(__DRIcontext
* driContextPriv
,
1043 __DRIdrawable
* driDrawPriv
,
1044 __DRIdrawable
* driReadPriv
)
1046 struct brw_context
*brw
;
1047 GET_CURRENT_CONTEXT(curCtx
);
1050 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
1054 /* According to the glXMakeCurrent() man page: "Pending commands to
1055 * the previous context, if any, are flushed before it is released."
1056 * But only flush if we're actually changing contexts.
1058 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
1059 _mesa_flush(curCtx
);
1062 if (driContextPriv
) {
1063 struct gl_context
*ctx
= &brw
->ctx
;
1064 struct gl_framebuffer
*fb
, *readFb
;
1066 if (driDrawPriv
== NULL
) {
1067 fb
= _mesa_get_incomplete_framebuffer();
1069 fb
= driDrawPriv
->driverPrivate
;
1070 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
1073 if (driReadPriv
== NULL
) {
1074 readFb
= _mesa_get_incomplete_framebuffer();
1076 readFb
= driReadPriv
->driverPrivate
;
1077 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
1080 /* The sRGB workaround changes the renderbuffer's format. We must change
1081 * the format before the renderbuffer's miptree get's allocated, otherwise
1082 * the formats of the renderbuffer and its miptree will differ.
1084 intel_gles3_srgb_workaround(brw
, fb
);
1085 intel_gles3_srgb_workaround(brw
, readFb
);
1087 /* If the context viewport hasn't been initialized, force a call out to
1088 * the loader to get buffers so we have a drawable size for the initial
1090 if (!brw
->ctx
.ViewportInitialized
)
1091 intel_prepare_render(brw
);
1093 _mesa_make_current(ctx
, fb
, readFb
);
1095 _mesa_make_current(NULL
, NULL
, NULL
);
1102 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
1103 __DRIdrawable
*drawable
)
1106 /* MSAA and fast color clear are not supported, so don't waste time
1107 * checking whether a resolve is needed.
1112 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1113 struct intel_renderbuffer
*rb
;
1115 /* Usually, only the back buffer will need to be downsampled. However,
1116 * the front buffer will also need it if the user has rendered into it.
1118 static const gl_buffer_index buffers
[2] = {
1123 for (int i
= 0; i
< 2; ++i
) {
1124 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
1125 if (rb
== NULL
|| rb
->mt
== NULL
)
1127 if (rb
->mt
->num_samples
<= 1)
1128 intel_miptree_resolve_color(brw
, rb
->mt
);
1130 intel_renderbuffer_downsample(brw
, rb
);
1135 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1137 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1141 intel_query_dri2_buffers(struct brw_context
*brw
,
1142 __DRIdrawable
*drawable
,
1143 __DRIbuffer
**buffers
,
1147 intel_process_dri2_buffer(struct brw_context
*brw
,
1148 __DRIdrawable
*drawable
,
1149 __DRIbuffer
*buffer
,
1150 struct intel_renderbuffer
*rb
,
1151 const char *buffer_name
);
1154 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1157 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1159 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1160 struct intel_renderbuffer
*rb
;
1161 __DRIbuffer
*buffers
= NULL
;
1163 const char *region_name
;
1165 /* Set this up front, so that in case our buffers get invalidated
1166 * while we're getting new buffers, we don't clobber the stamp and
1167 * thus ignore the invalidate. */
1168 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1170 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1171 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1173 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1175 if (buffers
== NULL
)
1178 for (i
= 0; i
< count
; i
++) {
1179 switch (buffers
[i
].attachment
) {
1180 case __DRI_BUFFER_FRONT_LEFT
:
1181 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1182 region_name
= "dri2 front buffer";
1185 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1186 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1187 region_name
= "dri2 fake front buffer";
1190 case __DRI_BUFFER_BACK_LEFT
:
1191 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1192 region_name
= "dri2 back buffer";
1195 case __DRI_BUFFER_DEPTH
:
1196 case __DRI_BUFFER_HIZ
:
1197 case __DRI_BUFFER_DEPTH_STENCIL
:
1198 case __DRI_BUFFER_STENCIL
:
1199 case __DRI_BUFFER_ACCUM
:
1202 "unhandled buffer attach event, attachment type %d\n",
1203 buffers
[i
].attachment
);
1207 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1213 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1215 struct brw_context
*brw
= context
->driverPrivate
;
1216 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1218 /* Set this up front, so that in case our buffers get invalidated
1219 * while we're getting new buffers, we don't clobber the stamp and
1220 * thus ignore the invalidate. */
1221 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1223 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1224 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1226 if (screen
->image
.loader
)
1227 intel_update_image_buffers(brw
, drawable
);
1229 intel_update_dri2_buffers(brw
, drawable
);
1231 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1235 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1236 * state is required.
1239 intel_prepare_render(struct brw_context
*brw
)
1241 struct gl_context
*ctx
= &brw
->ctx
;
1242 __DRIcontext
*driContext
= brw
->driContext
;
1243 __DRIdrawable
*drawable
;
1245 drawable
= driContext
->driDrawablePriv
;
1246 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1247 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1248 intel_update_renderbuffers(driContext
, drawable
);
1249 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1252 drawable
= driContext
->driReadablePriv
;
1253 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1254 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1255 intel_update_renderbuffers(driContext
, drawable
);
1256 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1259 /* If we're currently rendering to the front buffer, the rendering
1260 * that will happen next will probably dirty the front buffer. So
1261 * mark it as dirty here.
1263 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
1264 brw
->front_buffer_dirty
= true;
1268 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1270 * To determine which DRI buffers to request, examine the renderbuffers
1271 * attached to the drawable's framebuffer. Then request the buffers with
1272 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1274 * This is called from intel_update_renderbuffers().
1276 * \param drawable Drawable whose buffers are queried.
1277 * \param buffers [out] List of buffers returned by DRI2 query.
1278 * \param buffer_count [out] Number of buffers returned.
1280 * \see intel_update_renderbuffers()
1281 * \see DRI2GetBuffers()
1282 * \see DRI2GetBuffersWithFormat()
1285 intel_query_dri2_buffers(struct brw_context
*brw
,
1286 __DRIdrawable
*drawable
,
1287 __DRIbuffer
**buffers
,
1290 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1291 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1293 unsigned attachments
[8];
1295 struct intel_renderbuffer
*front_rb
;
1296 struct intel_renderbuffer
*back_rb
;
1298 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1299 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1301 memset(attachments
, 0, sizeof(attachments
));
1302 if ((brw_is_front_buffer_drawing(fb
) ||
1303 brw_is_front_buffer_reading(fb
) ||
1304 !back_rb
) && front_rb
) {
1305 /* If a fake front buffer is in use, then querying for
1306 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1307 * the real front buffer to the fake front buffer. So before doing the
1308 * query, we need to make sure all the pending drawing has landed in the
1309 * real front buffer.
1311 intel_batchbuffer_flush(brw
);
1312 intel_flush_front(&brw
->ctx
);
1314 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1315 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1316 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1317 /* We have pending front buffer rendering, but we aren't querying for a
1318 * front buffer. If the front buffer we have is a fake front buffer,
1319 * the X server is going to throw it away when it processes the query.
1320 * So before doing the query, make sure all the pending drawing has
1321 * landed in the real front buffer.
1323 intel_batchbuffer_flush(brw
);
1324 intel_flush_front(&brw
->ctx
);
1328 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1329 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1332 assert(i
<= ARRAY_SIZE(attachments
));
1334 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1339 drawable
->loaderPrivate
);
1343 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1345 * This is called from intel_update_renderbuffers().
1348 * DRI buffers whose attachment point is DRI2BufferStencil or
1349 * DRI2BufferDepthStencil are handled as special cases.
1351 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1352 * that is passed to drm_intel_bo_gem_create_from_name().
1354 * \see intel_update_renderbuffers()
1357 intel_process_dri2_buffer(struct brw_context
*brw
,
1358 __DRIdrawable
*drawable
,
1359 __DRIbuffer
*buffer
,
1360 struct intel_renderbuffer
*rb
,
1361 const char *buffer_name
)
1363 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1369 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1371 /* We try to avoid closing and reopening the same BO name, because the first
1372 * use of a mapping of the buffer involves a bunch of page faulting which is
1373 * moderately expensive.
1375 struct intel_mipmap_tree
*last_mt
;
1376 if (num_samples
== 0)
1379 last_mt
= rb
->singlesample_mt
;
1381 uint32_t old_name
= 0;
1383 /* The bo already has a name because the miptree was created by a
1384 * previous call to intel_process_dri2_buffer(). If a bo already has a
1385 * name, then drm_intel_bo_flink() is a low-cost getter. It does not
1386 * create a new name.
1388 drm_intel_bo_flink(last_mt
->bo
, &old_name
);
1391 if (old_name
== buffer
->name
)
1394 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1396 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1397 buffer
->name
, buffer
->attachment
,
1398 buffer
->cpp
, buffer
->pitch
);
1401 intel_miptree_release(&rb
->mt
);
1402 bo
= drm_intel_bo_gem_create_from_name(brw
->bufmgr
, buffer_name
,
1406 "Failed to open BO for returned DRI2 buffer "
1407 "(%dx%d, %s, named %d).\n"
1408 "This is likely a bug in the X Server that will lead to a "
1410 drawable
->w
, drawable
->h
, buffer_name
, buffer
->name
);
1414 intel_update_winsys_renderbuffer_miptree(brw
, rb
, bo
,
1415 drawable
->w
, drawable
->h
,
1418 if (brw_is_front_buffer_drawing(fb
) &&
1419 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1420 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1421 rb
->Base
.Base
.NumSamples
> 1) {
1422 intel_renderbuffer_upsample(brw
, rb
);
1427 drm_intel_bo_unreference(bo
);
1431 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1433 * To determine which DRI buffers to request, examine the renderbuffers
1434 * attached to the drawable's framebuffer. Then request the buffers from
1437 * This is called from intel_update_renderbuffers().
1439 * \param drawable Drawable whose buffers are queried.
1440 * \param buffers [out] List of buffers returned by DRI2 query.
1441 * \param buffer_count [out] Number of buffers returned.
1443 * \see intel_update_renderbuffers()
1447 intel_update_image_buffer(struct brw_context
*intel
,
1448 __DRIdrawable
*drawable
,
1449 struct intel_renderbuffer
*rb
,
1451 enum __DRIimageBufferMask buffer_type
)
1453 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1455 if (!rb
|| !buffer
->bo
)
1458 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1460 /* Check and see if we're already bound to the right
1463 struct intel_mipmap_tree
*last_mt
;
1464 if (num_samples
== 0)
1467 last_mt
= rb
->singlesample_mt
;
1469 if (last_mt
&& last_mt
->bo
== buffer
->bo
)
1472 intel_update_winsys_renderbuffer_miptree(intel
, rb
, buffer
->bo
,
1473 buffer
->width
, buffer
->height
,
1476 if (brw_is_front_buffer_drawing(fb
) &&
1477 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1478 rb
->Base
.Base
.NumSamples
> 1) {
1479 intel_renderbuffer_upsample(intel
, rb
);
1484 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1486 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1487 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1488 struct intel_renderbuffer
*front_rb
;
1489 struct intel_renderbuffer
*back_rb
;
1490 struct __DRIimageList images
;
1491 unsigned int format
;
1492 uint32_t buffer_mask
= 0;
1494 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1495 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1498 format
= intel_rb_format(back_rb
);
1500 format
= intel_rb_format(front_rb
);
1504 if (front_rb
&& (brw_is_front_buffer_drawing(fb
) ||
1505 brw_is_front_buffer_reading(fb
) || !back_rb
)) {
1506 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1510 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1512 (*screen
->image
.loader
->getBuffers
) (drawable
,
1513 driGLFormatToImageFormat(format
),
1514 &drawable
->dri2
.stamp
,
1515 drawable
->loaderPrivate
,
1519 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1520 drawable
->w
= images
.front
->width
;
1521 drawable
->h
= images
.front
->height
;
1522 intel_update_image_buffer(brw
,
1526 __DRI_IMAGE_BUFFER_FRONT
);
1528 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1529 drawable
->w
= images
.back
->width
;
1530 drawable
->h
= images
.back
->height
;
1531 intel_update_image_buffer(brw
,
1535 __DRI_IMAGE_BUFFER_BACK
);