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 /***************************************
72 * Mesa's Driver Functions
73 ***************************************/
76 brw_query_samples_for_format(struct gl_context
*ctx
, GLenum target
,
77 GLenum internalFormat
, int samples
[16])
79 struct brw_context
*brw
= brw_context(ctx
);
105 const char *const brw_vendor_string
= "Intel Open Source Technology Center";
108 brw_get_renderer_string(unsigned deviceID
)
111 static char buffer
[128];
115 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
116 #include "pci_ids/i965_pci_ids.h"
118 chipset
= "Unknown Intel Chipset";
122 (void) driGetRendererString(buffer
, chipset
, 0);
126 static const GLubyte
*
127 intel_get_string(struct gl_context
* ctx
, GLenum name
)
129 const struct brw_context
*const brw
= brw_context(ctx
);
133 return (GLubyte
*) brw_vendor_string
;
137 (GLubyte
*) brw_get_renderer_string(brw
->intelScreen
->deviceID
);
145 intel_viewport(struct gl_context
*ctx
)
147 struct brw_context
*brw
= brw_context(ctx
);
148 __DRIcontext
*driContext
= brw
->driContext
;
150 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
151 dri2InvalidateDrawable(driContext
->driDrawablePriv
);
152 dri2InvalidateDrawable(driContext
->driReadablePriv
);
157 intel_update_state(struct gl_context
* ctx
, GLuint new_state
)
159 struct brw_context
*brw
= brw_context(ctx
);
160 struct intel_texture_object
*tex_obj
;
161 struct intel_renderbuffer
*depth_irb
;
163 if (ctx
->swrast_context
)
164 _swrast_InvalidateState(ctx
, new_state
);
165 _vbo_InvalidateState(ctx
, new_state
);
167 brw
->NewGLState
|= new_state
;
169 _mesa_unlock_context_textures(ctx
);
171 /* Resolve the depth buffer's HiZ buffer. */
172 depth_irb
= intel_get_renderbuffer(ctx
->DrawBuffer
, BUFFER_DEPTH
);
174 intel_renderbuffer_resolve_hiz(brw
, depth_irb
);
176 /* Resolve depth buffer and render cache of each enabled texture. */
177 int maxEnabledUnit
= ctx
->Texture
._MaxEnabledTexImageUnit
;
178 for (int i
= 0; i
<= maxEnabledUnit
; i
++) {
179 if (!ctx
->Texture
.Unit
[i
]._Current
)
181 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
182 if (!tex_obj
|| !tex_obj
->mt
)
184 intel_miptree_all_slices_resolve_depth(brw
, tex_obj
->mt
);
185 intel_miptree_resolve_color(brw
, tex_obj
->mt
);
186 brw_render_cache_set_check_flush(brw
, tex_obj
->mt
->bo
);
189 _mesa_lock_context_textures(ctx
);
192 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
195 intel_flush_front(struct gl_context
*ctx
)
197 struct brw_context
*brw
= brw_context(ctx
);
198 __DRIcontext
*driContext
= brw
->driContext
;
199 __DRIdrawable
*driDrawable
= driContext
->driDrawablePriv
;
200 __DRIscreen
*const screen
= brw
->intelScreen
->driScrnPriv
;
202 if (brw
->front_buffer_dirty
&& _mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
203 if (flushFront(screen
) && driDrawable
&&
204 driDrawable
->loaderPrivate
) {
206 /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
208 * This potentially resolves both front and back buffer. It
209 * is unnecessary to resolve the back, but harms nothing except
210 * performance. And no one cares about front-buffer render
213 intel_resolve_for_dri2_flush(brw
, driDrawable
);
214 intel_batchbuffer_flush(brw
);
216 flushFront(screen
)(driDrawable
, driDrawable
->loaderPrivate
);
218 /* We set the dirty bit in intel_prepare_render() if we're
219 * front buffer rendering once we get there.
221 brw
->front_buffer_dirty
= false;
227 intel_glFlush(struct gl_context
*ctx
)
229 struct brw_context
*brw
= brw_context(ctx
);
231 intel_batchbuffer_flush(brw
);
232 intel_flush_front(ctx
);
233 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
234 brw
->need_throttle
= true;
238 intel_finish(struct gl_context
* ctx
)
240 struct brw_context
*brw
= brw_context(ctx
);
244 if (brw
->batch
.last_bo
)
245 drm_intel_bo_wait_rendering(brw
->batch
.last_bo
);
249 brw_init_driver_functions(struct brw_context
*brw
,
250 struct dd_function_table
*functions
)
252 _mesa_init_driver_functions(functions
);
254 /* GLX uses DRI2 invalidate events to handle window resizing.
255 * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
256 * which doesn't provide a mechanism for snooping the event queues.
258 * So EGL still relies on viewport hacks to handle window resizing.
259 * This should go away with DRI3000.
261 if (!brw
->driContext
->driScreenPriv
->dri2
.useInvalidate
)
262 functions
->Viewport
= intel_viewport
;
264 functions
->Flush
= intel_glFlush
;
265 functions
->Finish
= intel_finish
;
266 functions
->GetString
= intel_get_string
;
267 functions
->UpdateState
= intel_update_state
;
269 intelInitTextureFuncs(functions
);
270 intelInitTextureImageFuncs(functions
);
271 intelInitTextureSubImageFuncs(functions
);
272 intelInitTextureCopyImageFuncs(functions
);
273 intelInitCopyImageFuncs(functions
);
274 intelInitClearFuncs(functions
);
275 intelInitBufferFuncs(functions
);
276 intelInitPixelFuncs(functions
);
277 intelInitBufferObjectFuncs(functions
);
278 intel_init_syncobj_functions(functions
);
279 brw_init_object_purgeable_functions(functions
);
281 brwInitFragProgFuncs( functions
);
282 brw_init_common_queryobj_functions(functions
);
284 gen6_init_queryobj_functions(functions
);
286 gen4_init_queryobj_functions(functions
);
288 functions
->QuerySamplesForFormat
= brw_query_samples_for_format
;
290 functions
->NewTransformFeedback
= brw_new_transform_feedback
;
291 functions
->DeleteTransformFeedback
= brw_delete_transform_feedback
;
292 functions
->GetTransformFeedbackVertexCount
=
293 brw_get_transform_feedback_vertex_count
;
295 functions
->BeginTransformFeedback
= gen7_begin_transform_feedback
;
296 functions
->EndTransformFeedback
= gen7_end_transform_feedback
;
297 functions
->PauseTransformFeedback
= gen7_pause_transform_feedback
;
298 functions
->ResumeTransformFeedback
= gen7_resume_transform_feedback
;
300 functions
->BeginTransformFeedback
= brw_begin_transform_feedback
;
301 functions
->EndTransformFeedback
= brw_end_transform_feedback
;
305 functions
->GetSamplePosition
= gen6_get_sample_position
;
309 brw_initialize_context_constants(struct brw_context
*brw
)
311 struct gl_context
*ctx
= &brw
->ctx
;
313 unsigned max_samplers
=
314 brw
->gen
>= 8 || brw
->is_haswell
? BRW_MAX_TEX_UNIT
: 16;
316 ctx
->Const
.QueryCounterBits
.Timestamp
= 36;
318 ctx
->Const
.StripTextureBorder
= true;
320 ctx
->Const
.MaxDualSourceDrawBuffers
= 1;
321 ctx
->Const
.MaxDrawBuffers
= BRW_MAX_DRAW_BUFFERS
;
322 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
= max_samplers
;
323 ctx
->Const
.MaxTextureCoordUnits
= 8; /* Mesa limit */
324 ctx
->Const
.MaxTextureUnits
=
325 MIN2(ctx
->Const
.MaxTextureCoordUnits
,
326 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
);
327 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
= max_samplers
;
329 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= max_samplers
;
331 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= 0;
332 if (_mesa_extension_override_enables
.ARB_compute_shader
) {
333 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= BRW_MAX_TEX_UNIT
;
334 ctx
->Const
.MaxUniformBufferBindings
+= 12;
336 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= 0;
338 ctx
->Const
.MaxCombinedTextureImageUnits
=
339 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
340 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
+
341 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
342 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
344 ctx
->Const
.MaxTextureLevels
= 14; /* 8192 */
345 if (ctx
->Const
.MaxTextureLevels
> MAX_TEXTURE_LEVELS
)
346 ctx
->Const
.MaxTextureLevels
= MAX_TEXTURE_LEVELS
;
347 ctx
->Const
.Max3DTextureLevels
= 12; /* 2048 */
348 ctx
->Const
.MaxCubeTextureLevels
= 14; /* 8192 */
349 ctx
->Const
.MaxTextureMbytes
= 1536;
352 ctx
->Const
.MaxArrayTextureLayers
= 2048;
354 ctx
->Const
.MaxArrayTextureLayers
= 512;
356 ctx
->Const
.MaxTextureRectSize
= 1 << 12;
358 ctx
->Const
.MaxTextureMaxAnisotropy
= 16.0;
360 ctx
->Const
.MaxRenderbufferSize
= 8192;
362 /* Hardware only supports a limited number of transform feedback buffers.
363 * So we need to override the Mesa default (which is based only on software
366 ctx
->Const
.MaxTransformFeedbackBuffers
= BRW_MAX_SOL_BUFFERS
;
368 /* On Gen6, in the worst case, we use up one binding table entry per
369 * transform feedback component (see comments above the definition of
370 * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value
371 * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to
372 * BRW_MAX_SOL_BINDINGS.
374 * In "separate components" mode, we need to divide this value by
375 * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries
376 * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS.
378 ctx
->Const
.MaxTransformFeedbackInterleavedComponents
= BRW_MAX_SOL_BINDINGS
;
379 ctx
->Const
.MaxTransformFeedbackSeparateComponents
=
380 BRW_MAX_SOL_BINDINGS
/ BRW_MAX_SOL_BUFFERS
;
382 ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
= true;
385 const int *msaa_modes
= intel_supported_msaa_modes(brw
->intelScreen
);
386 const int clamp_max_samples
=
387 driQueryOptioni(&brw
->optionCache
, "clamp_max_samples");
389 if (clamp_max_samples
< 0) {
390 max_samples
= msaa_modes
[0];
392 /* Select the largest supported MSAA mode that does not exceed
396 for (int i
= 0; msaa_modes
[i
] != 0; ++i
) {
397 if (msaa_modes
[i
] <= clamp_max_samples
) {
398 max_samples
= msaa_modes
[i
];
404 ctx
->Const
.MaxSamples
= max_samples
;
405 ctx
->Const
.MaxColorTextureSamples
= max_samples
;
406 ctx
->Const
.MaxDepthTextureSamples
= max_samples
;
407 ctx
->Const
.MaxIntegerSamples
= max_samples
;
410 ctx
->Const
.MaxProgramTextureGatherComponents
= 4;
411 else if (brw
->gen
== 6)
412 ctx
->Const
.MaxProgramTextureGatherComponents
= 1;
414 ctx
->Const
.MinLineWidth
= 1.0;
415 ctx
->Const
.MinLineWidthAA
= 1.0;
416 ctx
->Const
.MaxLineWidth
= 5.0;
417 ctx
->Const
.MaxLineWidthAA
= 5.0;
418 ctx
->Const
.LineWidthGranularity
= 0.5;
420 ctx
->Const
.MinPointSize
= 1.0;
421 ctx
->Const
.MinPointSizeAA
= 1.0;
422 ctx
->Const
.MaxPointSize
= 255.0;
423 ctx
->Const
.MaxPointSizeAA
= 255.0;
424 ctx
->Const
.PointSizeGranularity
= 1.0;
426 if (brw
->gen
>= 5 || brw
->is_g4x
)
427 ctx
->Const
.MaxClipPlanes
= 8;
429 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeInstructions
= 16 * 1024;
430 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAluInstructions
= 0;
431 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexInstructions
= 0;
432 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexIndirections
= 0;
433 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAluInstructions
= 0;
434 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexInstructions
= 0;
435 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexIndirections
= 0;
436 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAttribs
= 16;
437 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTemps
= 256;
438 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAddressRegs
= 1;
439 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
= 1024;
440 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
=
441 MIN2(ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
,
442 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
);
444 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeInstructions
= 1024;
445 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAluInstructions
= 1024;
446 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexInstructions
= 1024;
447 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexIndirections
= 1024;
448 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAttribs
= 12;
449 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTemps
= 256;
450 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAddressRegs
= 0;
451 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
= 1024;
452 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
=
453 MIN2(ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
,
454 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
);
456 /* Fragment shaders use real, 32-bit twos-complement integers for all
459 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMin
= 31;
460 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMax
= 30;
461 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.Precision
= 0;
462 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
463 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
466 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
467 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
468 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
469 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
470 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
= BRW_MAX_ABO
;
471 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
= BRW_MAX_ABO
;
472 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
= BRW_MAX_ABO
;
473 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
= BRW_MAX_ABO
;
474 ctx
->Const
.MaxCombinedAtomicBuffers
= 3 * BRW_MAX_ABO
;
477 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
478 * but we're not sure how it's actually done for vertex order,
479 * that affect provoking vertex decision. Always use last vertex
480 * convention for quad primitive which works as expected for now.
483 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
485 ctx
->Const
.NativeIntegers
= true;
486 ctx
->Const
.VertexID_is_zero_based
= true;
488 /* Regarding the CMP instruction, the Ivybridge PRM says:
490 * "For each enabled channel 0b or 1b is assigned to the appropriate flag
491 * bit and 0/all zeros or all ones (e.g, byte 0xFF, word 0xFFFF, DWord
492 * 0xFFFFFFFF) is assigned to dst."
494 * but PRMs for earlier generations say
496 * "In dword format, one GRF may store up to 8 results. When the register
497 * is used later as a vector of Booleans, as only LSB at each channel
498 * contains meaning [sic] data, software should make sure all higher bits
499 * are masked out (e.g. by 'and-ing' an [sic] 0x01 constant)."
501 * We select the representation of a true boolean uniform to match what the
502 * CMP instruction returns.
504 * The Sandybridge BSpec's description of the CMP instruction matches that
505 * of the Ivybridge PRM. (The description in the Sandybridge PRM is seems
506 * to have not been updated from Ironlake). Its CMP instruction behaves like
507 * Ivybridge and newer.
510 ctx
->Const
.UniformBooleanTrue
= ~0;
512 ctx
->Const
.UniformBooleanTrue
= 1;
514 /* From the gen4 PRM, volume 4 page 127:
516 * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies
517 * the base address of the first element of the surface, computed in
518 * software by adding the surface base address to the byte offset of
519 * the element in the buffer."
521 * However, unaligned accesses are slower, so enforce buffer alignment.
523 ctx
->Const
.UniformBufferOffsetAlignment
= 16;
524 ctx
->Const
.TextureBufferOffsetAlignment
= 16;
527 ctx
->Const
.MaxVarying
= 32;
528 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= 128;
529 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= 64;
530 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= 128;
531 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= 128;
534 /* We want the GLSL compiler to emit code that uses condition codes */
535 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
536 ctx
->Const
.ShaderCompilerOptions
[i
].MaxIfDepth
= brw
->gen
< 6 ? 16 : UINT_MAX
;
537 ctx
->Const
.ShaderCompilerOptions
[i
].EmitCondCodes
= true;
538 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoNoise
= true;
539 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoMainReturn
= true;
540 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectInput
= true;
541 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectOutput
=
542 (i
== MESA_SHADER_FRAGMENT
);
543 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectTemp
=
544 (i
== MESA_SHADER_FRAGMENT
);
545 ctx
->Const
.ShaderCompilerOptions
[i
].EmitNoIndirectUniform
= false;
546 ctx
->Const
.ShaderCompilerOptions
[i
].LowerClipDistance
= true;
549 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_VERTEX
].OptimizeForAOS
= true;
550 ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_GEOMETRY
].OptimizeForAOS
= true;
552 /* ARB_viewport_array */
553 if (brw
->gen
>= 7 && ctx
->API
== API_OPENGL_CORE
) {
554 ctx
->Const
.MaxViewports
= GEN7_NUM_VIEWPORTS
;
555 ctx
->Const
.ViewportSubpixelBits
= 0;
557 /* Cast to float before negating becuase MaxViewportWidth is unsigned.
559 ctx
->Const
.ViewportBounds
.Min
= -(float)ctx
->Const
.MaxViewportWidth
;
560 ctx
->Const
.ViewportBounds
.Max
= ctx
->Const
.MaxViewportWidth
;
563 /* ARB_gpu_shader5 */
565 ctx
->Const
.MaxVertexStreams
= MIN2(4, MAX_VERTEX_STREAMS
);
569 * Process driconf (drirc) options, setting appropriate context flags.
571 * intelInitExtensions still pokes at optionCache directly, in order to
572 * avoid advertising various extensions. No flags are set, so it makes
573 * sense to continue doing that there.
576 brw_process_driconf_options(struct brw_context
*brw
)
578 struct gl_context
*ctx
= &brw
->ctx
;
580 driOptionCache
*options
= &brw
->optionCache
;
581 driParseConfigFiles(options
, &brw
->intelScreen
->optionCache
,
582 brw
->driContext
->driScreenPriv
->myNum
, "i965");
584 int bo_reuse_mode
= driQueryOptioni(options
, "bo_reuse");
585 switch (bo_reuse_mode
) {
586 case DRI_CONF_BO_REUSE_DISABLED
:
588 case DRI_CONF_BO_REUSE_ALL
:
589 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
593 if (!driQueryOptionb(options
, "hiz")) {
594 brw
->has_hiz
= false;
595 /* On gen6, you can only do separate stencil with HIZ. */
597 brw
->has_separate_stencil
= false;
600 if (driQueryOptionb(options
, "always_flush_batch")) {
601 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
602 brw
->always_flush_batch
= true;
605 if (driQueryOptionb(options
, "always_flush_cache")) {
606 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
607 brw
->always_flush_cache
= true;
610 if (driQueryOptionb(options
, "disable_throttling")) {
611 fprintf(stderr
, "disabling flush throttling\n");
612 brw
->disable_throttling
= true;
615 brw
->disable_derivative_optimization
=
616 driQueryOptionb(&brw
->optionCache
, "disable_derivative_optimization");
618 brw
->precompile
= driQueryOptionb(&brw
->optionCache
, "shader_precompile");
620 ctx
->Const
.ForceGLSLExtensionsWarn
=
621 driQueryOptionb(options
, "force_glsl_extensions_warn");
623 ctx
->Const
.DisableGLSLLineContinuations
=
624 driQueryOptionb(options
, "disable_glsl_line_continuations");
626 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
=
627 driQueryOptionb(options
, "allow_glsl_extension_directive_midshader");
631 brwCreateContext(gl_api api
,
632 const struct gl_config
*mesaVis
,
633 __DRIcontext
*driContextPriv
,
634 unsigned major_version
,
635 unsigned minor_version
,
638 unsigned *dri_ctx_error
,
639 void *sharedContextPrivate
)
641 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
642 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
643 struct intel_screen
*screen
= sPriv
->driverPrivate
;
644 const struct brw_device_info
*devinfo
= screen
->devinfo
;
645 struct dd_function_table functions
;
647 /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel
648 * provides us with context reset notifications.
650 uint32_t allowed_flags
= __DRI_CTX_FLAG_DEBUG
651 | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
;
653 if (screen
->has_context_reset_notification
)
654 allowed_flags
|= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
;
656 if (flags
& ~allowed_flags
) {
657 *dri_ctx_error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
661 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
663 fprintf(stderr
, "%s: failed to alloc context\n", __FUNCTION__
);
664 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
668 driContextPriv
->driverPrivate
= brw
;
669 brw
->driContext
= driContextPriv
;
670 brw
->intelScreen
= screen
;
671 brw
->bufmgr
= screen
->bufmgr
;
673 brw
->gen
= devinfo
->gen
;
674 brw
->gt
= devinfo
->gt
;
675 brw
->is_g4x
= devinfo
->is_g4x
;
676 brw
->is_baytrail
= devinfo
->is_baytrail
;
677 brw
->is_haswell
= devinfo
->is_haswell
;
678 brw
->is_cherryview
= devinfo
->is_cherryview
;
679 brw
->has_llc
= devinfo
->has_llc
;
680 brw
->has_hiz
= devinfo
->has_hiz_and_separate_stencil
;
681 brw
->has_separate_stencil
= devinfo
->has_hiz_and_separate_stencil
;
682 brw
->has_pln
= devinfo
->has_pln
;
683 brw
->has_compr4
= devinfo
->has_compr4
;
684 brw
->has_surface_tile_offset
= devinfo
->has_surface_tile_offset
;
685 brw
->has_negative_rhw_bug
= devinfo
->has_negative_rhw_bug
;
686 brw
->needs_unlit_centroid_workaround
=
687 devinfo
->needs_unlit_centroid_workaround
;
689 brw
->must_use_separate_stencil
= screen
->hw_must_use_separate_stencil
;
690 brw
->has_swizzling
= screen
->hw_has_swizzling
;
692 brw
->vs
.base
.stage
= MESA_SHADER_VERTEX
;
693 brw
->gs
.base
.stage
= MESA_SHADER_GEOMETRY
;
694 brw
->wm
.base
.stage
= MESA_SHADER_FRAGMENT
;
696 gen8_init_vtable_surface_functions(brw
);
697 brw
->vtbl
.emit_depth_stencil_hiz
= gen8_emit_depth_stencil_hiz
;
698 } else if (brw
->gen
>= 7) {
699 gen7_init_vtable_surface_functions(brw
);
700 brw
->vtbl
.emit_depth_stencil_hiz
= gen7_emit_depth_stencil_hiz
;
701 } else if (brw
->gen
>= 6) {
702 gen6_init_vtable_surface_functions(brw
);
703 brw
->vtbl
.emit_depth_stencil_hiz
= gen6_emit_depth_stencil_hiz
;
705 gen4_init_vtable_surface_functions(brw
);
706 brw
->vtbl
.emit_depth_stencil_hiz
= brw_emit_depth_stencil_hiz
;
709 brw_init_driver_functions(brw
, &functions
);
712 functions
.GetGraphicsResetStatus
= brw_get_graphics_reset_status
;
714 struct gl_context
*ctx
= &brw
->ctx
;
716 if (!_mesa_initialize_context(ctx
, api
, mesaVis
, shareCtx
, &functions
)) {
717 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
718 fprintf(stderr
, "%s: failed to init mesa context\n", __FUNCTION__
);
719 intelDestroyContext(driContextPriv
);
723 driContextSetFlags(ctx
, flags
);
725 /* Initialize the software rasterizer and helper modules.
727 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
728 * software fallbacks (which we have to support on legacy GL to do weird
729 * glDrawPixels(), glBitmap(), and other functions).
731 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
732 _swrast_CreateContext(ctx
);
735 _vbo_CreateContext(ctx
);
736 if (ctx
->swrast_context
) {
737 _tnl_CreateContext(ctx
);
738 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= _tnl_run_pipeline
;
739 _swsetup_CreateContext(ctx
);
741 /* Configure swrast to match hardware characteristics: */
742 _swrast_allow_pixel_fog(ctx
, false);
743 _swrast_allow_vertex_fog(ctx
, true);
746 _mesa_meta_init(ctx
);
748 brw_process_driconf_options(brw
);
749 brw_process_intel_debug_variable(brw
);
750 brw_initialize_context_constants(brw
);
752 ctx
->Const
.ResetStrategy
= notify_reset
753 ? GL_LOSE_CONTEXT_ON_RESET_ARB
: GL_NO_RESET_NOTIFICATION_ARB
;
755 /* Reinitialize the context point state. It depends on ctx->Const values. */
756 _mesa_init_point(ctx
);
760 intel_batchbuffer_init(brw
);
763 /* Create a new hardware context. Using a hardware context means that
764 * our GPU state will be saved/restored on context switch, allowing us
765 * to assume that the GPU is in the same state we left it in.
767 * This is required for transform feedback buffer offsets, query objects,
768 * and also allows us to reduce how much state we have to emit.
770 brw
->hw_ctx
= drm_intel_gem_context_create(brw
->bufmgr
);
773 fprintf(stderr
, "Gen6+ requires Kernel 3.6 or later.\n");
774 intelDestroyContext(driContextPriv
);
781 intelInitExtensions(ctx
);
783 brw_init_surface_formats(brw
);
785 brw
->max_vs_threads
= devinfo
->max_vs_threads
;
786 brw
->max_gs_threads
= devinfo
->max_gs_threads
;
787 brw
->max_wm_threads
= devinfo
->max_wm_threads
;
788 brw
->urb
.size
= devinfo
->urb
.size
;
789 brw
->urb
.min_vs_entries
= devinfo
->urb
.min_vs_entries
;
790 brw
->urb
.max_vs_entries
= devinfo
->urb
.max_vs_entries
;
791 brw
->urb
.max_gs_entries
= devinfo
->urb
.max_gs_entries
;
793 /* Estimate the size of the mappable aperture into the GTT. There's an
794 * ioctl to get the whole GTT size, but not one to get the mappable subset.
795 * It turns out it's basically always 256MB, though some ancient hardware
798 uint32_t gtt_size
= 256 * 1024 * 1024;
800 /* We don't want to map two objects such that a memcpy between them would
801 * just fault one mapping in and then the other over and over forever. So
802 * we would need to divide the GTT size by 2. Additionally, some GTT is
803 * taken up by things like the framebuffer and the ringbuffer and such, so
804 * be more conservative.
806 brw
->max_gtt_map_object_size
= gtt_size
/ 4;
809 brw
->urb
.gen6_gs_previously_active
= false;
811 brw
->prim_restart
.in_progress
= false;
812 brw
->prim_restart
.enable_cut_index
= false;
813 brw
->gs
.enabled
= false;
814 brw
->sf
.viewport_transform_enable
= true;
816 ctx
->VertexProgram
._MaintainTnlProgram
= true;
817 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
819 brw_draw_init( brw
);
821 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0) {
822 /* Turn on some extra GL_ARB_debug_output generation. */
823 brw
->perf_debug
= true;
826 if ((flags
& __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
) != 0)
827 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
829 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
830 brw_init_shader_time(brw
);
832 _mesa_compute_version(ctx
);
834 _mesa_initialize_dispatch_tables(ctx
);
835 _mesa_initialize_vbo_vtxfmt(ctx
);
837 if (ctx
->Extensions
.AMD_performance_monitor
) {
838 brw_init_performance_monitors(brw
);
841 vbo_use_buffer_objects(ctx
);
842 vbo_always_unmap_buffers(ctx
);
848 intelDestroyContext(__DRIcontext
* driContextPriv
)
850 struct brw_context
*brw
=
851 (struct brw_context
*) driContextPriv
->driverPrivate
;
852 struct gl_context
*ctx
= &brw
->ctx
;
854 assert(brw
); /* should never be null */
858 /* Dump a final BMP in case the application doesn't call SwapBuffers */
859 if (INTEL_DEBUG
& DEBUG_AUB
) {
860 intel_batchbuffer_flush(brw
);
861 aub_dump_bmp(&brw
->ctx
);
864 _mesa_meta_free(&brw
->ctx
);
865 brw_meta_fast_clear_free(brw
);
867 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
868 /* Force a report. */
869 brw
->shader_time
.report_time
= 0;
871 brw_collect_and_report_shader_time(brw
);
872 brw_destroy_shader_time(brw
);
875 brw_destroy_state(brw
);
876 brw_draw_destroy(brw
);
878 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
880 drm_intel_gem_context_destroy(brw
->hw_ctx
);
882 if (ctx
->swrast_context
) {
883 _swsetup_DestroyContext(&brw
->ctx
);
884 _tnl_DestroyContext(&brw
->ctx
);
886 _vbo_DestroyContext(&brw
->ctx
);
888 if (ctx
->swrast_context
)
889 _swrast_DestroyContext(&brw
->ctx
);
891 intel_batchbuffer_free(brw
);
893 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
894 brw
->first_post_swapbuffers_batch
= NULL
;
896 driDestroyOptionCache(&brw
->optionCache
);
898 /* free the Mesa context */
899 _mesa_free_context_data(&brw
->ctx
);
902 driContextPriv
->driverPrivate
= NULL
;
906 intelUnbindContext(__DRIcontext
* driContextPriv
)
908 /* Unset current context and dispath table */
909 _mesa_make_current(NULL
, NULL
, NULL
);
915 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
916 * on window system framebuffers.
918 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
919 * your renderbuffer can do sRGB encode, and you can flip a switch that does
920 * sRGB encode if the renderbuffer can handle it. You can ask specifically
921 * for a visual where you're guaranteed to be capable, but it turns out that
922 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
923 * incapable ones, becuase there's no difference between the two in resources
924 * used. Applications thus get built that accidentally rely on the default
925 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
928 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
929 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
930 * So they removed the enable knob and made it "if the renderbuffer is sRGB
931 * capable, do sRGB encode". Then, for your window system renderbuffers, you
932 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
933 * and get no sRGB encode (assuming that both kinds of visual are available).
934 * Thus our choice to support sRGB by default on our visuals for desktop would
935 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
937 * Unfortunately, renderbuffer setup happens before a context is created. So
938 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
939 * context (without an sRGB visual, though we don't have sRGB visuals exposed
940 * yet), we go turn that back off before anyone finds out.
943 intel_gles3_srgb_workaround(struct brw_context
*brw
,
944 struct gl_framebuffer
*fb
)
946 struct gl_context
*ctx
= &brw
->ctx
;
948 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
951 /* Some day when we support the sRGB capable bit on visuals available for
952 * GLES, we'll need to respect that and not disable things here.
954 fb
->Visual
.sRGBCapable
= false;
955 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
956 if (fb
->Attachment
[i
].Renderbuffer
&&
957 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_B8G8R8A8_SRGB
) {
958 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_B8G8R8A8_UNORM
;
964 intelMakeCurrent(__DRIcontext
* driContextPriv
,
965 __DRIdrawable
* driDrawPriv
,
966 __DRIdrawable
* driReadPriv
)
968 struct brw_context
*brw
;
969 GET_CURRENT_CONTEXT(curCtx
);
972 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
976 /* According to the glXMakeCurrent() man page: "Pending commands to
977 * the previous context, if any, are flushed before it is released."
978 * But only flush if we're actually changing contexts.
980 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
984 if (driContextPriv
) {
985 struct gl_context
*ctx
= &brw
->ctx
;
986 struct gl_framebuffer
*fb
, *readFb
;
988 if (driDrawPriv
== NULL
&& driReadPriv
== NULL
) {
989 fb
= _mesa_get_incomplete_framebuffer();
990 readFb
= _mesa_get_incomplete_framebuffer();
992 fb
= driDrawPriv
->driverPrivate
;
993 readFb
= driReadPriv
->driverPrivate
;
994 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
995 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
998 /* The sRGB workaround changes the renderbuffer's format. We must change
999 * the format before the renderbuffer's miptree get's allocated, otherwise
1000 * the formats of the renderbuffer and its miptree will differ.
1002 intel_gles3_srgb_workaround(brw
, fb
);
1003 intel_gles3_srgb_workaround(brw
, readFb
);
1005 /* If the context viewport hasn't been initialized, force a call out to
1006 * the loader to get buffers so we have a drawable size for the initial
1008 if (!brw
->ctx
.ViewportInitialized
)
1009 intel_prepare_render(brw
);
1011 _mesa_make_current(ctx
, fb
, readFb
);
1013 _mesa_make_current(NULL
, NULL
, NULL
);
1020 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
1021 __DRIdrawable
*drawable
)
1024 /* MSAA and fast color clear are not supported, so don't waste time
1025 * checking whether a resolve is needed.
1030 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1031 struct intel_renderbuffer
*rb
;
1033 /* Usually, only the back buffer will need to be downsampled. However,
1034 * the front buffer will also need it if the user has rendered into it.
1036 static const gl_buffer_index buffers
[2] = {
1041 for (int i
= 0; i
< 2; ++i
) {
1042 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
1043 if (rb
== NULL
|| rb
->mt
== NULL
)
1045 if (rb
->mt
->num_samples
<= 1)
1046 intel_miptree_resolve_color(brw
, rb
->mt
);
1048 intel_renderbuffer_downsample(brw
, rb
);
1053 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1055 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1059 intel_query_dri2_buffers(struct brw_context
*brw
,
1060 __DRIdrawable
*drawable
,
1061 __DRIbuffer
**buffers
,
1065 intel_process_dri2_buffer(struct brw_context
*brw
,
1066 __DRIdrawable
*drawable
,
1067 __DRIbuffer
*buffer
,
1068 struct intel_renderbuffer
*rb
,
1069 const char *buffer_name
);
1072 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1075 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1077 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1078 struct intel_renderbuffer
*rb
;
1079 __DRIbuffer
*buffers
= NULL
;
1081 const char *region_name
;
1083 /* Set this up front, so that in case our buffers get invalidated
1084 * while we're getting new buffers, we don't clobber the stamp and
1085 * thus ignore the invalidate. */
1086 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1088 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1089 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1091 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1093 if (buffers
== NULL
)
1096 for (i
= 0; i
< count
; i
++) {
1097 switch (buffers
[i
].attachment
) {
1098 case __DRI_BUFFER_FRONT_LEFT
:
1099 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1100 region_name
= "dri2 front buffer";
1103 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1104 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1105 region_name
= "dri2 fake front buffer";
1108 case __DRI_BUFFER_BACK_LEFT
:
1109 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1110 region_name
= "dri2 back buffer";
1113 case __DRI_BUFFER_DEPTH
:
1114 case __DRI_BUFFER_HIZ
:
1115 case __DRI_BUFFER_DEPTH_STENCIL
:
1116 case __DRI_BUFFER_STENCIL
:
1117 case __DRI_BUFFER_ACCUM
:
1120 "unhandled buffer attach event, attachment type %d\n",
1121 buffers
[i
].attachment
);
1125 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1131 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1133 struct brw_context
*brw
= context
->driverPrivate
;
1134 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1136 /* Set this up front, so that in case our buffers get invalidated
1137 * while we're getting new buffers, we don't clobber the stamp and
1138 * thus ignore the invalidate. */
1139 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1141 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1142 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1144 if (screen
->image
.loader
)
1145 intel_update_image_buffers(brw
, drawable
);
1147 intel_update_dri2_buffers(brw
, drawable
);
1149 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1153 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1154 * state is required.
1157 intel_prepare_render(struct brw_context
*brw
)
1159 struct gl_context
*ctx
= &brw
->ctx
;
1160 __DRIcontext
*driContext
= brw
->driContext
;
1161 __DRIdrawable
*drawable
;
1163 drawable
= driContext
->driDrawablePriv
;
1164 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1165 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1166 intel_update_renderbuffers(driContext
, drawable
);
1167 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1170 drawable
= driContext
->driReadablePriv
;
1171 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1172 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1173 intel_update_renderbuffers(driContext
, drawable
);
1174 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1177 /* If we're currently rendering to the front buffer, the rendering
1178 * that will happen next will probably dirty the front buffer. So
1179 * mark it as dirty here.
1181 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
1182 brw
->front_buffer_dirty
= true;
1184 /* Wait for the swapbuffers before the one we just emitted, so we
1185 * don't get too many swaps outstanding for apps that are GPU-heavy
1186 * but not CPU-heavy.
1188 * We're using intelDRI2Flush (called from the loader before
1189 * swapbuffer) and glFlush (for front buffer rendering) as the
1190 * indicator that a frame is done and then throttle when we get
1191 * here as we prepare to render the next frame. At this point for
1192 * round trips for swap/copy and getting new buffers are done and
1193 * we'll spend less time waiting on the GPU.
1195 * Unfortunately, we don't have a handle to the batch containing
1196 * the swap, and getting our hands on that doesn't seem worth it,
1197 * so we just us the first batch we emitted after the last swap.
1199 if (brw
->need_throttle
&& brw
->first_post_swapbuffers_batch
) {
1200 if (!brw
->disable_throttling
)
1201 drm_intel_bo_wait_rendering(brw
->first_post_swapbuffers_batch
);
1202 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
1203 brw
->first_post_swapbuffers_batch
= NULL
;
1204 brw
->need_throttle
= false;
1209 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1211 * To determine which DRI buffers to request, examine the renderbuffers
1212 * attached to the drawable's framebuffer. Then request the buffers with
1213 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1215 * This is called from intel_update_renderbuffers().
1217 * \param drawable Drawable whose buffers are queried.
1218 * \param buffers [out] List of buffers returned by DRI2 query.
1219 * \param buffer_count [out] Number of buffers returned.
1221 * \see intel_update_renderbuffers()
1222 * \see DRI2GetBuffers()
1223 * \see DRI2GetBuffersWithFormat()
1226 intel_query_dri2_buffers(struct brw_context
*brw
,
1227 __DRIdrawable
*drawable
,
1228 __DRIbuffer
**buffers
,
1231 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1232 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1234 unsigned attachments
[8];
1236 struct intel_renderbuffer
*front_rb
;
1237 struct intel_renderbuffer
*back_rb
;
1239 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1240 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1242 memset(attachments
, 0, sizeof(attachments
));
1243 if ((brw_is_front_buffer_drawing(fb
) ||
1244 brw_is_front_buffer_reading(fb
) ||
1245 !back_rb
) && front_rb
) {
1246 /* If a fake front buffer is in use, then querying for
1247 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1248 * the real front buffer to the fake front buffer. So before doing the
1249 * query, we need to make sure all the pending drawing has landed in the
1250 * real front buffer.
1252 intel_batchbuffer_flush(brw
);
1253 intel_flush_front(&brw
->ctx
);
1255 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1256 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1257 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1258 /* We have pending front buffer rendering, but we aren't querying for a
1259 * front buffer. If the front buffer we have is a fake front buffer,
1260 * the X server is going to throw it away when it processes the query.
1261 * So before doing the query, make sure all the pending drawing has
1262 * landed in the real front buffer.
1264 intel_batchbuffer_flush(brw
);
1265 intel_flush_front(&brw
->ctx
);
1269 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1270 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1273 assert(i
<= ARRAY_SIZE(attachments
));
1275 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1280 drawable
->loaderPrivate
);
1284 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1286 * This is called from intel_update_renderbuffers().
1289 * DRI buffers whose attachment point is DRI2BufferStencil or
1290 * DRI2BufferDepthStencil are handled as special cases.
1292 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1293 * that is passed to drm_intel_bo_gem_create_from_name().
1295 * \see intel_update_renderbuffers()
1298 intel_process_dri2_buffer(struct brw_context
*brw
,
1299 __DRIdrawable
*drawable
,
1300 __DRIbuffer
*buffer
,
1301 struct intel_renderbuffer
*rb
,
1302 const char *buffer_name
)
1304 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1310 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1312 /* We try to avoid closing and reopening the same BO name, because the first
1313 * use of a mapping of the buffer involves a bunch of page faulting which is
1314 * moderately expensive.
1316 struct intel_mipmap_tree
*last_mt
;
1317 if (num_samples
== 0)
1320 last_mt
= rb
->singlesample_mt
;
1322 uint32_t old_name
= 0;
1324 /* The bo already has a name because the miptree was created by a
1325 * previous call to intel_process_dri2_buffer(). If a bo already has a
1326 * name, then drm_intel_bo_flink() is a low-cost getter. It does not
1327 * create a new name.
1329 drm_intel_bo_flink(last_mt
->bo
, &old_name
);
1332 if (old_name
== buffer
->name
)
1335 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1337 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1338 buffer
->name
, buffer
->attachment
,
1339 buffer
->cpp
, buffer
->pitch
);
1342 intel_miptree_release(&rb
->mt
);
1343 bo
= drm_intel_bo_gem_create_from_name(brw
->bufmgr
, buffer_name
,
1347 "Failed to open BO for returned DRI2 buffer "
1348 "(%dx%d, %s, named %d).\n"
1349 "This is likely a bug in the X Server that will lead to a "
1351 drawable
->w
, drawable
->h
, buffer_name
, buffer
->name
);
1355 intel_update_winsys_renderbuffer_miptree(brw
, rb
, bo
,
1356 drawable
->w
, drawable
->h
,
1359 if (brw_is_front_buffer_drawing(fb
) &&
1360 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1361 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1362 rb
->Base
.Base
.NumSamples
> 1) {
1363 intel_renderbuffer_upsample(brw
, rb
);
1368 drm_intel_bo_unreference(bo
);
1372 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1374 * To determine which DRI buffers to request, examine the renderbuffers
1375 * attached to the drawable's framebuffer. Then request the buffers from
1378 * This is called from intel_update_renderbuffers().
1380 * \param drawable Drawable whose buffers are queried.
1381 * \param buffers [out] List of buffers returned by DRI2 query.
1382 * \param buffer_count [out] Number of buffers returned.
1384 * \see intel_update_renderbuffers()
1388 intel_update_image_buffer(struct brw_context
*intel
,
1389 __DRIdrawable
*drawable
,
1390 struct intel_renderbuffer
*rb
,
1392 enum __DRIimageBufferMask buffer_type
)
1394 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1396 if (!rb
|| !buffer
->bo
)
1399 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1401 /* Check and see if we're already bound to the right
1404 struct intel_mipmap_tree
*last_mt
;
1405 if (num_samples
== 0)
1408 last_mt
= rb
->singlesample_mt
;
1410 if (last_mt
&& last_mt
->bo
== buffer
->bo
)
1413 intel_update_winsys_renderbuffer_miptree(intel
, rb
, buffer
->bo
,
1414 buffer
->width
, buffer
->height
,
1417 if (brw_is_front_buffer_drawing(fb
) &&
1418 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1419 rb
->Base
.Base
.NumSamples
> 1) {
1420 intel_renderbuffer_upsample(intel
, rb
);
1425 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1427 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1428 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1429 struct intel_renderbuffer
*front_rb
;
1430 struct intel_renderbuffer
*back_rb
;
1431 struct __DRIimageList images
;
1432 unsigned int format
;
1433 uint32_t buffer_mask
= 0;
1435 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1436 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1439 format
= intel_rb_format(back_rb
);
1441 format
= intel_rb_format(front_rb
);
1445 if (front_rb
&& (brw_is_front_buffer_drawing(fb
) ||
1446 brw_is_front_buffer_reading(fb
) || !back_rb
)) {
1447 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1451 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1453 (*screen
->image
.loader
->getBuffers
) (drawable
,
1454 driGLFormatToImageFormat(format
),
1455 &drawable
->dri2
.stamp
,
1456 drawable
->loaderPrivate
,
1460 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1461 drawable
->w
= images
.front
->width
;
1462 drawable
->h
= images
.front
->height
;
1463 intel_update_image_buffer(brw
,
1467 __DRI_IMAGE_BUFFER_FRONT
);
1469 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1470 drawable
->w
= images
.back
->width
;
1471 drawable
->h
= images
.back
->height
;
1472 intel_update_image_buffer(brw
,
1476 __DRI_IMAGE_BUFFER_BACK
);