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", __FUNCTION__
);
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", __FUNCTION__
);
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 assert(brw
); /* should never be null */
932 /* Dump a final BMP in case the application doesn't call SwapBuffers */
933 if (INTEL_DEBUG
& DEBUG_AUB
) {
934 intel_batchbuffer_flush(brw
);
935 aub_dump_bmp(&brw
->ctx
);
938 _mesa_meta_free(&brw
->ctx
);
939 brw_meta_fast_clear_free(brw
);
941 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
942 /* Force a report. */
943 brw
->shader_time
.report_time
= 0;
945 brw_collect_and_report_shader_time(brw
);
946 brw_destroy_shader_time(brw
);
949 brw_destroy_state(brw
);
950 brw_draw_destroy(brw
);
952 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
953 if (brw
->vs
.base
.scratch_bo
)
954 drm_intel_bo_unreference(brw
->vs
.base
.scratch_bo
);
955 if (brw
->gs
.base
.scratch_bo
)
956 drm_intel_bo_unreference(brw
->gs
.base
.scratch_bo
);
957 if (brw
->wm
.base
.scratch_bo
)
958 drm_intel_bo_unreference(brw
->wm
.base
.scratch_bo
);
960 drm_intel_gem_context_destroy(brw
->hw_ctx
);
962 if (ctx
->swrast_context
) {
963 _swsetup_DestroyContext(&brw
->ctx
);
964 _tnl_DestroyContext(&brw
->ctx
);
966 _vbo_DestroyContext(&brw
->ctx
);
968 if (ctx
->swrast_context
)
969 _swrast_DestroyContext(&brw
->ctx
);
971 intel_batchbuffer_free(brw
);
973 drm_intel_bo_unreference(brw
->throttle_batch
[1]);
974 drm_intel_bo_unreference(brw
->throttle_batch
[0]);
975 brw
->throttle_batch
[1] = NULL
;
976 brw
->throttle_batch
[0] = NULL
;
978 driDestroyOptionCache(&brw
->optionCache
);
980 /* free the Mesa context */
981 _mesa_free_context_data(&brw
->ctx
);
984 driContextPriv
->driverPrivate
= NULL
;
988 intelUnbindContext(__DRIcontext
* driContextPriv
)
990 /* Unset current context and dispath table */
991 _mesa_make_current(NULL
, NULL
, NULL
);
997 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
998 * on window system framebuffers.
1000 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
1001 * your renderbuffer can do sRGB encode, and you can flip a switch that does
1002 * sRGB encode if the renderbuffer can handle it. You can ask specifically
1003 * for a visual where you're guaranteed to be capable, but it turns out that
1004 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
1005 * incapable ones, becuase there's no difference between the two in resources
1006 * used. Applications thus get built that accidentally rely on the default
1007 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
1010 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
1011 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
1012 * So they removed the enable knob and made it "if the renderbuffer is sRGB
1013 * capable, do sRGB encode". Then, for your window system renderbuffers, you
1014 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
1015 * and get no sRGB encode (assuming that both kinds of visual are available).
1016 * Thus our choice to support sRGB by default on our visuals for desktop would
1017 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
1019 * Unfortunately, renderbuffer setup happens before a context is created. So
1020 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
1021 * context (without an sRGB visual, though we don't have sRGB visuals exposed
1022 * yet), we go turn that back off before anyone finds out.
1025 intel_gles3_srgb_workaround(struct brw_context
*brw
,
1026 struct gl_framebuffer
*fb
)
1028 struct gl_context
*ctx
= &brw
->ctx
;
1030 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
1033 /* Some day when we support the sRGB capable bit on visuals available for
1034 * GLES, we'll need to respect that and not disable things here.
1036 fb
->Visual
.sRGBCapable
= false;
1037 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
1038 if (fb
->Attachment
[i
].Renderbuffer
&&
1039 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_B8G8R8A8_SRGB
) {
1040 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_B8G8R8A8_UNORM
;
1046 intelMakeCurrent(__DRIcontext
* driContextPriv
,
1047 __DRIdrawable
* driDrawPriv
,
1048 __DRIdrawable
* driReadPriv
)
1050 struct brw_context
*brw
;
1051 GET_CURRENT_CONTEXT(curCtx
);
1054 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
1058 /* According to the glXMakeCurrent() man page: "Pending commands to
1059 * the previous context, if any, are flushed before it is released."
1060 * But only flush if we're actually changing contexts.
1062 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
1063 _mesa_flush(curCtx
);
1066 if (driContextPriv
) {
1067 struct gl_context
*ctx
= &brw
->ctx
;
1068 struct gl_framebuffer
*fb
, *readFb
;
1070 if (driDrawPriv
== NULL
) {
1071 fb
= _mesa_get_incomplete_framebuffer();
1073 fb
= driDrawPriv
->driverPrivate
;
1074 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
1077 if (driReadPriv
== NULL
) {
1078 readFb
= _mesa_get_incomplete_framebuffer();
1080 readFb
= driReadPriv
->driverPrivate
;
1081 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
1084 /* The sRGB workaround changes the renderbuffer's format. We must change
1085 * the format before the renderbuffer's miptree get's allocated, otherwise
1086 * the formats of the renderbuffer and its miptree will differ.
1088 intel_gles3_srgb_workaround(brw
, fb
);
1089 intel_gles3_srgb_workaround(brw
, readFb
);
1091 /* If the context viewport hasn't been initialized, force a call out to
1092 * the loader to get buffers so we have a drawable size for the initial
1094 if (!brw
->ctx
.ViewportInitialized
)
1095 intel_prepare_render(brw
);
1097 _mesa_make_current(ctx
, fb
, readFb
);
1099 _mesa_make_current(NULL
, NULL
, NULL
);
1106 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
1107 __DRIdrawable
*drawable
)
1110 /* MSAA and fast color clear are not supported, so don't waste time
1111 * checking whether a resolve is needed.
1116 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1117 struct intel_renderbuffer
*rb
;
1119 /* Usually, only the back buffer will need to be downsampled. However,
1120 * the front buffer will also need it if the user has rendered into it.
1122 static const gl_buffer_index buffers
[2] = {
1127 for (int i
= 0; i
< 2; ++i
) {
1128 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
1129 if (rb
== NULL
|| rb
->mt
== NULL
)
1131 if (rb
->mt
->num_samples
<= 1)
1132 intel_miptree_resolve_color(brw
, rb
->mt
);
1134 intel_renderbuffer_downsample(brw
, rb
);
1139 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1141 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1145 intel_query_dri2_buffers(struct brw_context
*brw
,
1146 __DRIdrawable
*drawable
,
1147 __DRIbuffer
**buffers
,
1151 intel_process_dri2_buffer(struct brw_context
*brw
,
1152 __DRIdrawable
*drawable
,
1153 __DRIbuffer
*buffer
,
1154 struct intel_renderbuffer
*rb
,
1155 const char *buffer_name
);
1158 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1161 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1163 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1164 struct intel_renderbuffer
*rb
;
1165 __DRIbuffer
*buffers
= NULL
;
1167 const char *region_name
;
1169 /* Set this up front, so that in case our buffers get invalidated
1170 * while we're getting new buffers, we don't clobber the stamp and
1171 * thus ignore the invalidate. */
1172 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1174 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1175 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1177 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1179 if (buffers
== NULL
)
1182 for (i
= 0; i
< count
; i
++) {
1183 switch (buffers
[i
].attachment
) {
1184 case __DRI_BUFFER_FRONT_LEFT
:
1185 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1186 region_name
= "dri2 front buffer";
1189 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1190 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1191 region_name
= "dri2 fake front buffer";
1194 case __DRI_BUFFER_BACK_LEFT
:
1195 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1196 region_name
= "dri2 back buffer";
1199 case __DRI_BUFFER_DEPTH
:
1200 case __DRI_BUFFER_HIZ
:
1201 case __DRI_BUFFER_DEPTH_STENCIL
:
1202 case __DRI_BUFFER_STENCIL
:
1203 case __DRI_BUFFER_ACCUM
:
1206 "unhandled buffer attach event, attachment type %d\n",
1207 buffers
[i
].attachment
);
1211 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1217 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1219 struct brw_context
*brw
= context
->driverPrivate
;
1220 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1222 /* Set this up front, so that in case our buffers get invalidated
1223 * while we're getting new buffers, we don't clobber the stamp and
1224 * thus ignore the invalidate. */
1225 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1227 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1228 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1230 if (screen
->image
.loader
)
1231 intel_update_image_buffers(brw
, drawable
);
1233 intel_update_dri2_buffers(brw
, drawable
);
1235 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1239 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1240 * state is required.
1243 intel_prepare_render(struct brw_context
*brw
)
1245 struct gl_context
*ctx
= &brw
->ctx
;
1246 __DRIcontext
*driContext
= brw
->driContext
;
1247 __DRIdrawable
*drawable
;
1249 drawable
= driContext
->driDrawablePriv
;
1250 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1251 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1252 intel_update_renderbuffers(driContext
, drawable
);
1253 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1256 drawable
= driContext
->driReadablePriv
;
1257 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1258 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1259 intel_update_renderbuffers(driContext
, drawable
);
1260 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1263 /* If we're currently rendering to the front buffer, the rendering
1264 * that will happen next will probably dirty the front buffer. So
1265 * mark it as dirty here.
1267 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
1268 brw
->front_buffer_dirty
= true;
1272 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1274 * To determine which DRI buffers to request, examine the renderbuffers
1275 * attached to the drawable's framebuffer. Then request the buffers with
1276 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1278 * This is called from intel_update_renderbuffers().
1280 * \param drawable Drawable whose buffers are queried.
1281 * \param buffers [out] List of buffers returned by DRI2 query.
1282 * \param buffer_count [out] Number of buffers returned.
1284 * \see intel_update_renderbuffers()
1285 * \see DRI2GetBuffers()
1286 * \see DRI2GetBuffersWithFormat()
1289 intel_query_dri2_buffers(struct brw_context
*brw
,
1290 __DRIdrawable
*drawable
,
1291 __DRIbuffer
**buffers
,
1294 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1295 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1297 unsigned attachments
[8];
1299 struct intel_renderbuffer
*front_rb
;
1300 struct intel_renderbuffer
*back_rb
;
1302 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1303 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1305 memset(attachments
, 0, sizeof(attachments
));
1306 if ((brw_is_front_buffer_drawing(fb
) ||
1307 brw_is_front_buffer_reading(fb
) ||
1308 !back_rb
) && front_rb
) {
1309 /* If a fake front buffer is in use, then querying for
1310 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1311 * the real front buffer to the fake front buffer. So before doing the
1312 * query, we need to make sure all the pending drawing has landed in the
1313 * real front buffer.
1315 intel_batchbuffer_flush(brw
);
1316 intel_flush_front(&brw
->ctx
);
1318 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1319 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1320 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1321 /* We have pending front buffer rendering, but we aren't querying for a
1322 * front buffer. If the front buffer we have is a fake front buffer,
1323 * the X server is going to throw it away when it processes the query.
1324 * So before doing the query, make sure all the pending drawing has
1325 * landed in the real front buffer.
1327 intel_batchbuffer_flush(brw
);
1328 intel_flush_front(&brw
->ctx
);
1332 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1333 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1336 assert(i
<= ARRAY_SIZE(attachments
));
1338 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1343 drawable
->loaderPrivate
);
1347 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1349 * This is called from intel_update_renderbuffers().
1352 * DRI buffers whose attachment point is DRI2BufferStencil or
1353 * DRI2BufferDepthStencil are handled as special cases.
1355 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1356 * that is passed to drm_intel_bo_gem_create_from_name().
1358 * \see intel_update_renderbuffers()
1361 intel_process_dri2_buffer(struct brw_context
*brw
,
1362 __DRIdrawable
*drawable
,
1363 __DRIbuffer
*buffer
,
1364 struct intel_renderbuffer
*rb
,
1365 const char *buffer_name
)
1367 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1373 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1375 /* We try to avoid closing and reopening the same BO name, because the first
1376 * use of a mapping of the buffer involves a bunch of page faulting which is
1377 * moderately expensive.
1379 struct intel_mipmap_tree
*last_mt
;
1380 if (num_samples
== 0)
1383 last_mt
= rb
->singlesample_mt
;
1385 uint32_t old_name
= 0;
1387 /* The bo already has a name because the miptree was created by a
1388 * previous call to intel_process_dri2_buffer(). If a bo already has a
1389 * name, then drm_intel_bo_flink() is a low-cost getter. It does not
1390 * create a new name.
1392 drm_intel_bo_flink(last_mt
->bo
, &old_name
);
1395 if (old_name
== buffer
->name
)
1398 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1400 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1401 buffer
->name
, buffer
->attachment
,
1402 buffer
->cpp
, buffer
->pitch
);
1405 intel_miptree_release(&rb
->mt
);
1406 bo
= drm_intel_bo_gem_create_from_name(brw
->bufmgr
, buffer_name
,
1410 "Failed to open BO for returned DRI2 buffer "
1411 "(%dx%d, %s, named %d).\n"
1412 "This is likely a bug in the X Server that will lead to a "
1414 drawable
->w
, drawable
->h
, buffer_name
, buffer
->name
);
1418 intel_update_winsys_renderbuffer_miptree(brw
, rb
, bo
,
1419 drawable
->w
, drawable
->h
,
1422 if (brw_is_front_buffer_drawing(fb
) &&
1423 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1424 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1425 rb
->Base
.Base
.NumSamples
> 1) {
1426 intel_renderbuffer_upsample(brw
, rb
);
1431 drm_intel_bo_unreference(bo
);
1435 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1437 * To determine which DRI buffers to request, examine the renderbuffers
1438 * attached to the drawable's framebuffer. Then request the buffers from
1441 * This is called from intel_update_renderbuffers().
1443 * \param drawable Drawable whose buffers are queried.
1444 * \param buffers [out] List of buffers returned by DRI2 query.
1445 * \param buffer_count [out] Number of buffers returned.
1447 * \see intel_update_renderbuffers()
1451 intel_update_image_buffer(struct brw_context
*intel
,
1452 __DRIdrawable
*drawable
,
1453 struct intel_renderbuffer
*rb
,
1455 enum __DRIimageBufferMask buffer_type
)
1457 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1459 if (!rb
|| !buffer
->bo
)
1462 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1464 /* Check and see if we're already bound to the right
1467 struct intel_mipmap_tree
*last_mt
;
1468 if (num_samples
== 0)
1471 last_mt
= rb
->singlesample_mt
;
1473 if (last_mt
&& last_mt
->bo
== buffer
->bo
)
1476 intel_update_winsys_renderbuffer_miptree(intel
, rb
, buffer
->bo
,
1477 buffer
->width
, buffer
->height
,
1480 if (brw_is_front_buffer_drawing(fb
) &&
1481 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1482 rb
->Base
.Base
.NumSamples
> 1) {
1483 intel_renderbuffer_upsample(intel
, rb
);
1488 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1490 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1491 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1492 struct intel_renderbuffer
*front_rb
;
1493 struct intel_renderbuffer
*back_rb
;
1494 struct __DRIimageList images
;
1495 unsigned int format
;
1496 uint32_t buffer_mask
= 0;
1498 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1499 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1502 format
= intel_rb_format(back_rb
);
1504 format
= intel_rb_format(front_rb
);
1508 if (front_rb
&& (brw_is_front_buffer_drawing(fb
) ||
1509 brw_is_front_buffer_reading(fb
) || !back_rb
)) {
1510 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1514 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1516 (*screen
->image
.loader
->getBuffers
) (drawable
,
1517 driGLFormatToImageFormat(format
),
1518 &drawable
->dri2
.stamp
,
1519 drawable
->loaderPrivate
,
1523 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1524 drawable
->w
= images
.front
->width
;
1525 drawable
->h
= images
.front
->height
;
1526 intel_update_image_buffer(brw
,
1530 __DRI_IMAGE_BUFFER_FRONT
);
1532 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1533 drawable
->w
= images
.back
->width
;
1534 drawable
->h
= images
.back
->height
;
1535 intel_update_image_buffer(brw
,
1539 __DRI_IMAGE_BUFFER_BACK
);