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 "compiler/nir/nir.h"
35 #include "main/api_exec.h"
36 #include "main/context.h"
37 #include "main/fbobject.h"
38 #include "main/extensions.h"
39 #include "main/imports.h"
40 #include "main/macros.h"
41 #include "main/points.h"
42 #include "main/version.h"
43 #include "main/vtxfmt.h"
44 #include "main/texobj.h"
45 #include "main/framebuffer.h"
47 #include "vbo/vbo_context.h"
49 #include "drivers/common/driverfuncs.h"
50 #include "drivers/common/meta.h"
53 #include "brw_context.h"
54 #include "brw_defines.h"
55 #include "brw_blorp.h"
56 #include "brw_compiler.h"
58 #include "brw_state.h"
60 #include "intel_batchbuffer.h"
61 #include "intel_buffer_objects.h"
62 #include "intel_buffers.h"
63 #include "intel_fbo.h"
64 #include "intel_mipmap_tree.h"
65 #include "intel_pixel.h"
66 #include "intel_image.h"
67 #include "intel_tex.h"
68 #include "intel_tex_obj.h"
70 #include "swrast_setup/swrast_setup.h"
72 #include "tnl/t_pipeline.h"
73 #include "util/ralloc.h"
74 #include "util/debug.h"
77 /***************************************
78 * Mesa's Driver Functions
79 ***************************************/
81 const char *const brw_vendor_string
= "Intel Open Source Technology Center";
84 get_bsw_model(const struct intel_screen
*screen
)
86 switch (screen
->eu_total
) {
97 brw_get_renderer_string(const struct intel_screen
*screen
)
100 static char buffer
[128];
103 switch (screen
->deviceID
) {
105 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
106 #include "pci_ids/i965_pci_ids.h"
108 chipset
= "Unknown Intel Chipset";
112 /* Braswell branding is funny, so we have to fix it up here */
113 if (screen
->deviceID
== 0x22B1) {
114 bsw
= strdup(chipset
);
115 char *needle
= strstr(bsw
, "XXX");
117 memcpy(needle
, get_bsw_model(screen
), 3);
122 (void) driGetRendererString(buffer
, chipset
, 0);
127 static const GLubyte
*
128 intel_get_string(struct gl_context
* ctx
, GLenum name
)
130 const struct brw_context
*const brw
= brw_context(ctx
);
134 return (GLubyte
*) brw_vendor_string
;
138 (GLubyte
*) brw_get_renderer_string(brw
->screen
);
146 intel_viewport(struct gl_context
*ctx
)
148 struct brw_context
*brw
= brw_context(ctx
);
149 __DRIcontext
*driContext
= brw
->driContext
;
151 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
152 if (driContext
->driDrawablePriv
)
153 dri2InvalidateDrawable(driContext
->driDrawablePriv
);
154 if (driContext
->driReadablePriv
)
155 dri2InvalidateDrawable(driContext
->driReadablePriv
);
160 intel_update_framebuffer(struct gl_context
*ctx
,
161 struct gl_framebuffer
*fb
)
163 struct brw_context
*brw
= brw_context(ctx
);
165 /* Quantize the derived default number of samples
167 fb
->DefaultGeometry
._NumSamples
=
168 intel_quantize_num_samples(brw
->screen
,
169 fb
->DefaultGeometry
.NumSamples
);
173 intel_disable_rb_aux_buffer(struct brw_context
*brw
, const drm_intel_bo
*bo
)
175 const struct gl_framebuffer
*fb
= brw
->ctx
.DrawBuffer
;
178 for (unsigned i
= 0; i
< fb
->_NumColorDrawBuffers
; i
++) {
179 const struct intel_renderbuffer
*irb
=
180 intel_renderbuffer(fb
->_ColorDrawBuffers
[i
]);
182 if (irb
&& irb
->mt
->bo
== bo
) {
183 found
= brw
->draw_aux_buffer_disabled
[i
] = true;
190 /* On Gen9 color buffers may be compressed by the hardware (lossless
191 * compression). There are, however, format restrictions and care needs to be
192 * taken that the sampler engine is capable for re-interpreting a buffer with
193 * format different the buffer was originally written with.
195 * For example, SRGB formats are not compressible and the sampler engine isn't
196 * capable of treating RGBA_UNORM as SRGB_ALPHA. In such a case the underlying
197 * color buffer needs to be resolved so that the sampling surface can be
198 * sampled as non-compressed (i.e., without the auxiliary MCS buffer being
202 intel_texture_view_requires_resolve(struct brw_context
*brw
,
203 struct intel_texture_object
*intel_tex
)
206 !intel_miptree_is_lossless_compressed(brw
, intel_tex
->mt
))
209 const uint32_t brw_format
= brw_format_for_mesa_format(intel_tex
->_Format
);
211 if (isl_format_supports_lossless_compression(&brw
->screen
->devinfo
,
215 perf_debug("Incompatible sampling format (%s) for rbc (%s)\n",
216 _mesa_get_format_name(intel_tex
->_Format
),
217 _mesa_get_format_name(intel_tex
->mt
->format
));
219 if (intel_disable_rb_aux_buffer(brw
, intel_tex
->mt
->bo
))
220 perf_debug("Sampling renderbuffer with non-compressible format - "
221 "turning off compression");
227 intel_update_state(struct gl_context
* ctx
, GLuint new_state
)
229 struct brw_context
*brw
= brw_context(ctx
);
230 struct intel_texture_object
*tex_obj
;
231 struct intel_renderbuffer
*depth_irb
;
233 if (ctx
->swrast_context
)
234 _swrast_InvalidateState(ctx
, new_state
);
235 _vbo_InvalidateState(ctx
, new_state
);
237 brw
->NewGLState
|= new_state
;
239 _mesa_unlock_context_textures(ctx
);
241 /* Resolve the depth buffer's HiZ buffer. */
242 depth_irb
= intel_get_renderbuffer(ctx
->DrawBuffer
, BUFFER_DEPTH
);
244 intel_renderbuffer_resolve_hiz(brw
, depth_irb
);
246 memset(brw
->draw_aux_buffer_disabled
, 0,
247 sizeof(brw
->draw_aux_buffer_disabled
));
249 /* Resolve depth buffer and render cache of each enabled texture. */
250 int maxEnabledUnit
= ctx
->Texture
._MaxEnabledTexImageUnit
;
251 for (int i
= 0; i
<= maxEnabledUnit
; i
++) {
252 if (!ctx
->Texture
.Unit
[i
]._Current
)
254 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
255 if (!tex_obj
|| !tex_obj
->mt
)
257 intel_miptree_all_slices_resolve_depth(brw
, tex_obj
->mt
);
258 /* Sampling engine understands lossless compression and resolving
259 * those surfaces should be skipped for performance reasons.
261 const int flags
= intel_texture_view_requires_resolve(brw
, tex_obj
) ?
262 0 : INTEL_MIPTREE_IGNORE_CCS_E
;
263 intel_miptree_resolve_color(brw
, tex_obj
->mt
, flags
);
264 brw_render_cache_set_check_flush(brw
, tex_obj
->mt
->bo
);
266 if (tex_obj
->base
.StencilSampling
||
267 tex_obj
->mt
->format
== MESA_FORMAT_S_UINT8
) {
268 intel_update_r8stencil(brw
, tex_obj
->mt
);
272 /* Resolve color for each active shader image. */
273 for (unsigned i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
274 const struct gl_linked_shader
*shader
=
275 ctx
->_Shader
->CurrentProgram
[i
] ?
276 ctx
->_Shader
->CurrentProgram
[i
]->_LinkedShaders
[i
] : NULL
;
278 if (unlikely(shader
&& shader
->NumImages
)) {
279 for (unsigned j
= 0; j
< shader
->NumImages
; j
++) {
280 struct gl_image_unit
*u
= &ctx
->ImageUnits
[shader
->ImageUnits
[j
]];
281 tex_obj
= intel_texture_object(u
->TexObj
);
283 if (tex_obj
&& tex_obj
->mt
) {
284 /* Access to images is implemented using indirect messages
285 * against data port. Normal render target write understands
286 * lossless compression but unfortunately the typed/untyped
287 * read/write interface doesn't. Therefore even lossless
288 * compressed surfaces need to be resolved prior to accessing
289 * them. Hence skip setting INTEL_MIPTREE_IGNORE_CCS_E.
291 intel_miptree_resolve_color(brw
, tex_obj
->mt
, 0);
293 if (intel_miptree_is_lossless_compressed(brw
, tex_obj
->mt
) &&
294 intel_disable_rb_aux_buffer(brw
, tex_obj
->mt
->bo
)) {
295 perf_debug("Using renderbuffer as shader image - turning "
296 "off lossless compression");
299 brw_render_cache_set_check_flush(brw
, tex_obj
->mt
->bo
);
305 /* Resolve color buffers for non-coherent framebuffer fetch. */
306 if (!ctx
->Extensions
.MESA_shader_framebuffer_fetch
&&
307 ctx
->FragmentProgram
._Current
&&
308 ctx
->FragmentProgram
._Current
->info
.outputs_read
) {
309 const struct gl_framebuffer
*fb
= ctx
->DrawBuffer
;
311 for (unsigned i
= 0; i
< fb
->_NumColorDrawBuffers
; i
++) {
312 const struct intel_renderbuffer
*irb
=
313 intel_renderbuffer(fb
->_ColorDrawBuffers
[i
]);
316 intel_miptree_resolve_color(brw
, irb
->mt
,
317 INTEL_MIPTREE_IGNORE_CCS_E
))
318 brw_render_cache_set_check_flush(brw
, irb
->mt
->bo
);
322 /* If FRAMEBUFFER_SRGB is used on Gen9+ then we need to resolve any of the
323 * single-sampled color renderbuffers because the CCS buffer isn't
324 * supported for SRGB formats. This only matters if FRAMEBUFFER_SRGB is
325 * enabled because otherwise the surface state will be programmed with the
326 * linear equivalent format anyway.
328 if (brw
->gen
>= 9 && ctx
->Color
.sRGBEnabled
) {
329 struct gl_framebuffer
*fb
= ctx
->DrawBuffer
;
330 for (int i
= 0; i
< fb
->_NumColorDrawBuffers
; i
++) {
331 struct gl_renderbuffer
*rb
= fb
->_ColorDrawBuffers
[i
];
336 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
337 struct intel_mipmap_tree
*mt
= irb
->mt
;
340 mt
->num_samples
> 1 ||
341 _mesa_get_srgb_format_linear(mt
->format
) == mt
->format
)
344 /* Lossless compression is not supported for SRGB formats, it
345 * should be impossible to get here with such surfaces.
347 assert(!intel_miptree_is_lossless_compressed(brw
, mt
));
348 intel_miptree_resolve_color(brw
, mt
, 0);
349 brw_render_cache_set_check_flush(brw
, mt
->bo
);
353 _mesa_lock_context_textures(ctx
);
355 if (new_state
& _NEW_BUFFERS
) {
356 intel_update_framebuffer(ctx
, ctx
->DrawBuffer
);
357 if (ctx
->DrawBuffer
!= ctx
->ReadBuffer
)
358 intel_update_framebuffer(ctx
, ctx
->ReadBuffer
);
362 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
365 intel_flush_front(struct gl_context
*ctx
)
367 struct brw_context
*brw
= brw_context(ctx
);
368 __DRIcontext
*driContext
= brw
->driContext
;
369 __DRIdrawable
*driDrawable
= driContext
->driDrawablePriv
;
370 __DRIscreen
*const dri_screen
= brw
->screen
->driScrnPriv
;
372 if (brw
->front_buffer_dirty
&& _mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
373 if (flushFront(dri_screen
) && driDrawable
&&
374 driDrawable
->loaderPrivate
) {
376 /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
378 * This potentially resolves both front and back buffer. It
379 * is unnecessary to resolve the back, but harms nothing except
380 * performance. And no one cares about front-buffer render
383 intel_resolve_for_dri2_flush(brw
, driDrawable
);
384 intel_batchbuffer_flush(brw
);
386 flushFront(dri_screen
)(driDrawable
, driDrawable
->loaderPrivate
);
388 /* We set the dirty bit in intel_prepare_render() if we're
389 * front buffer rendering once we get there.
391 brw
->front_buffer_dirty
= false;
397 intel_glFlush(struct gl_context
*ctx
)
399 struct brw_context
*brw
= brw_context(ctx
);
401 intel_batchbuffer_flush(brw
);
402 intel_flush_front(ctx
);
404 brw
->need_flush_throttle
= true;
408 intel_finish(struct gl_context
* ctx
)
410 struct brw_context
*brw
= brw_context(ctx
);
414 if (brw
->batch
.last_bo
)
415 drm_intel_bo_wait_rendering(brw
->batch
.last_bo
);
419 brw_init_driver_functions(struct brw_context
*brw
,
420 struct dd_function_table
*functions
)
422 _mesa_init_driver_functions(functions
);
424 /* GLX uses DRI2 invalidate events to handle window resizing.
425 * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
426 * which doesn't provide a mechanism for snooping the event queues.
428 * So EGL still relies on viewport hacks to handle window resizing.
429 * This should go away with DRI3000.
431 if (!brw
->driContext
->driScreenPriv
->dri2
.useInvalidate
)
432 functions
->Viewport
= intel_viewport
;
434 functions
->Flush
= intel_glFlush
;
435 functions
->Finish
= intel_finish
;
436 functions
->GetString
= intel_get_string
;
437 functions
->UpdateState
= intel_update_state
;
439 intelInitTextureFuncs(functions
);
440 intelInitTextureImageFuncs(functions
);
441 intelInitTextureSubImageFuncs(functions
);
442 intelInitTextureCopyImageFuncs(functions
);
443 intelInitCopyImageFuncs(functions
);
444 intelInitClearFuncs(functions
);
445 intelInitBufferFuncs(functions
);
446 intelInitPixelFuncs(functions
);
447 intelInitBufferObjectFuncs(functions
);
448 brw_init_syncobj_functions(functions
);
449 brw_init_object_purgeable_functions(functions
);
451 brwInitFragProgFuncs( functions
);
452 brw_init_common_queryobj_functions(functions
);
453 if (brw
->gen
>= 8 || brw
->is_haswell
)
454 hsw_init_queryobj_functions(functions
);
455 else if (brw
->gen
>= 6)
456 gen6_init_queryobj_functions(functions
);
458 gen4_init_queryobj_functions(functions
);
459 brw_init_compute_functions(functions
);
461 brw_init_conditional_render_functions(functions
);
463 functions
->QueryInternalFormat
= brw_query_internal_format
;
465 functions
->NewTransformFeedback
= brw_new_transform_feedback
;
466 functions
->DeleteTransformFeedback
= brw_delete_transform_feedback
;
467 if (brw
->screen
->has_mi_math_and_lrr
) {
468 functions
->BeginTransformFeedback
= hsw_begin_transform_feedback
;
469 functions
->EndTransformFeedback
= hsw_end_transform_feedback
;
470 functions
->PauseTransformFeedback
= hsw_pause_transform_feedback
;
471 functions
->ResumeTransformFeedback
= hsw_resume_transform_feedback
;
472 } else if (brw
->gen
>= 7) {
473 functions
->BeginTransformFeedback
= gen7_begin_transform_feedback
;
474 functions
->EndTransformFeedback
= gen7_end_transform_feedback
;
475 functions
->PauseTransformFeedback
= gen7_pause_transform_feedback
;
476 functions
->ResumeTransformFeedback
= gen7_resume_transform_feedback
;
477 functions
->GetTransformFeedbackVertexCount
=
478 brw_get_transform_feedback_vertex_count
;
480 functions
->BeginTransformFeedback
= brw_begin_transform_feedback
;
481 functions
->EndTransformFeedback
= brw_end_transform_feedback
;
485 functions
->GetSamplePosition
= gen6_get_sample_position
;
489 brw_initialize_context_constants(struct brw_context
*brw
)
491 struct gl_context
*ctx
= &brw
->ctx
;
492 const struct brw_compiler
*compiler
= brw
->screen
->compiler
;
494 const bool stage_exists
[MESA_SHADER_STAGES
] = {
495 [MESA_SHADER_VERTEX
] = true,
496 [MESA_SHADER_TESS_CTRL
] = brw
->gen
>= 7,
497 [MESA_SHADER_TESS_EVAL
] = brw
->gen
>= 7,
498 [MESA_SHADER_GEOMETRY
] = brw
->gen
>= 6,
499 [MESA_SHADER_FRAGMENT
] = true,
500 [MESA_SHADER_COMPUTE
] =
501 (ctx
->API
== API_OPENGL_CORE
&&
502 ctx
->Const
.MaxComputeWorkGroupSize
[0] >= 1024) ||
503 (ctx
->API
== API_OPENGLES2
&&
504 ctx
->Const
.MaxComputeWorkGroupSize
[0] >= 128) ||
505 _mesa_extension_override_enables
.ARB_compute_shader
,
508 unsigned num_stages
= 0;
509 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
514 unsigned max_samplers
=
515 brw
->gen
>= 8 || brw
->is_haswell
? BRW_MAX_TEX_UNIT
: 16;
517 ctx
->Const
.MaxDualSourceDrawBuffers
= 1;
518 ctx
->Const
.MaxDrawBuffers
= BRW_MAX_DRAW_BUFFERS
;
519 ctx
->Const
.MaxCombinedShaderOutputResources
=
520 MAX_IMAGE_UNITS
+ BRW_MAX_DRAW_BUFFERS
;
522 ctx
->Const
.QueryCounterBits
.Timestamp
= 36;
524 ctx
->Const
.MaxTextureCoordUnits
= 8; /* Mesa limit */
525 ctx
->Const
.MaxImageUnits
= MAX_IMAGE_UNITS
;
526 ctx
->Const
.MaxRenderbufferSize
= 8192;
527 ctx
->Const
.MaxTextureLevels
= MIN2(14 /* 8192 */, MAX_TEXTURE_LEVELS
);
528 ctx
->Const
.Max3DTextureLevels
= 12; /* 2048 */
529 ctx
->Const
.MaxCubeTextureLevels
= 14; /* 8192 */
530 ctx
->Const
.MaxArrayTextureLayers
= brw
->gen
>= 7 ? 2048 : 512;
531 ctx
->Const
.MaxTextureMbytes
= 1536;
532 ctx
->Const
.MaxTextureRectSize
= 1 << 12;
533 ctx
->Const
.MaxTextureMaxAnisotropy
= 16.0;
534 ctx
->Const
.StripTextureBorder
= true;
536 ctx
->Const
.MaxProgramTextureGatherComponents
= 4;
537 else if (brw
->gen
== 6)
538 ctx
->Const
.MaxProgramTextureGatherComponents
= 1;
540 ctx
->Const
.MaxUniformBlockSize
= 65536;
542 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
543 struct gl_program_constants
*prog
= &ctx
->Const
.Program
[i
];
545 if (!stage_exists
[i
])
548 prog
->MaxTextureImageUnits
= max_samplers
;
550 prog
->MaxUniformBlocks
= BRW_MAX_UBO
;
551 prog
->MaxCombinedUniformComponents
=
552 prog
->MaxUniformComponents
+
553 ctx
->Const
.MaxUniformBlockSize
/ 4 * prog
->MaxUniformBlocks
;
555 prog
->MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
556 prog
->MaxAtomicBuffers
= BRW_MAX_ABO
;
557 prog
->MaxImageUniforms
= compiler
->scalar_stage
[i
] ? BRW_MAX_IMAGES
: 0;
558 prog
->MaxShaderStorageBlocks
= BRW_MAX_SSBO
;
561 ctx
->Const
.MaxTextureUnits
=
562 MIN2(ctx
->Const
.MaxTextureCoordUnits
,
563 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
);
565 ctx
->Const
.MaxUniformBufferBindings
= num_stages
* BRW_MAX_UBO
;
566 ctx
->Const
.MaxCombinedUniformBlocks
= num_stages
* BRW_MAX_UBO
;
567 ctx
->Const
.MaxCombinedAtomicBuffers
= num_stages
* BRW_MAX_ABO
;
568 ctx
->Const
.MaxCombinedShaderStorageBlocks
= num_stages
* BRW_MAX_SSBO
;
569 ctx
->Const
.MaxShaderStorageBufferBindings
= num_stages
* BRW_MAX_SSBO
;
570 ctx
->Const
.MaxCombinedTextureImageUnits
= num_stages
* max_samplers
;
571 ctx
->Const
.MaxCombinedImageUniforms
= num_stages
* BRW_MAX_IMAGES
;
574 /* Hardware only supports a limited number of transform feedback buffers.
575 * So we need to override the Mesa default (which is based only on software
578 ctx
->Const
.MaxTransformFeedbackBuffers
= BRW_MAX_SOL_BUFFERS
;
580 /* On Gen6, in the worst case, we use up one binding table entry per
581 * transform feedback component (see comments above the definition of
582 * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value
583 * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to
584 * BRW_MAX_SOL_BINDINGS.
586 * In "separate components" mode, we need to divide this value by
587 * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries
588 * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS.
590 ctx
->Const
.MaxTransformFeedbackInterleavedComponents
= BRW_MAX_SOL_BINDINGS
;
591 ctx
->Const
.MaxTransformFeedbackSeparateComponents
=
592 BRW_MAX_SOL_BINDINGS
/ BRW_MAX_SOL_BUFFERS
;
594 ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
=
595 !brw
->screen
->has_mi_math_and_lrr
;
598 const int *msaa_modes
= intel_supported_msaa_modes(brw
->screen
);
599 const int clamp_max_samples
=
600 driQueryOptioni(&brw
->optionCache
, "clamp_max_samples");
602 if (clamp_max_samples
< 0) {
603 max_samples
= msaa_modes
[0];
605 /* Select the largest supported MSAA mode that does not exceed
609 for (int i
= 0; msaa_modes
[i
] != 0; ++i
) {
610 if (msaa_modes
[i
] <= clamp_max_samples
) {
611 max_samples
= msaa_modes
[i
];
617 ctx
->Const
.MaxSamples
= max_samples
;
618 ctx
->Const
.MaxColorTextureSamples
= max_samples
;
619 ctx
->Const
.MaxDepthTextureSamples
= max_samples
;
620 ctx
->Const
.MaxIntegerSamples
= max_samples
;
621 ctx
->Const
.MaxImageSamples
= 0;
623 /* gen6_set_sample_maps() sets SampleMap{2,4,8}x variables which are used
624 * to map indices of rectangular grid to sample numbers within a pixel.
625 * These variables are used by GL_EXT_framebuffer_multisample_blit_scaled
626 * extension implementation. For more details see the comment above
627 * gen6_set_sample_maps() definition.
629 gen6_set_sample_maps(ctx
);
631 ctx
->Const
.MinLineWidth
= 1.0;
632 ctx
->Const
.MinLineWidthAA
= 1.0;
634 ctx
->Const
.MaxLineWidth
= 7.375;
635 ctx
->Const
.MaxLineWidthAA
= 7.375;
636 ctx
->Const
.LineWidthGranularity
= 0.125;
638 ctx
->Const
.MaxLineWidth
= 7.0;
639 ctx
->Const
.MaxLineWidthAA
= 7.0;
640 ctx
->Const
.LineWidthGranularity
= 0.5;
643 /* For non-antialiased lines, we have to round the line width to the
644 * nearest whole number. Make sure that we don't advertise a line
645 * width that, when rounded, will be beyond the actual hardware
648 assert(roundf(ctx
->Const
.MaxLineWidth
) <= ctx
->Const
.MaxLineWidth
);
650 ctx
->Const
.MinPointSize
= 1.0;
651 ctx
->Const
.MinPointSizeAA
= 1.0;
652 ctx
->Const
.MaxPointSize
= 255.0;
653 ctx
->Const
.MaxPointSizeAA
= 255.0;
654 ctx
->Const
.PointSizeGranularity
= 1.0;
656 if (brw
->gen
>= 5 || brw
->is_g4x
)
657 ctx
->Const
.MaxClipPlanes
= 8;
659 ctx
->Const
.LowerTessLevel
= true;
660 ctx
->Const
.LowerTCSPatchVerticesIn
= brw
->gen
>= 8;
661 ctx
->Const
.LowerTESPatchVerticesIn
= true;
662 ctx
->Const
.PrimitiveRestartForPatches
= true;
664 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeInstructions
= 16 * 1024;
665 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAluInstructions
= 0;
666 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexInstructions
= 0;
667 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexIndirections
= 0;
668 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAluInstructions
= 0;
669 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexInstructions
= 0;
670 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexIndirections
= 0;
671 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAttribs
= 16;
672 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTemps
= 256;
673 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAddressRegs
= 1;
674 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
= 1024;
675 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
=
676 MIN2(ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
,
677 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
);
679 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeInstructions
= 1024;
680 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAluInstructions
= 1024;
681 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexInstructions
= 1024;
682 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexIndirections
= 1024;
683 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAttribs
= 12;
684 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTemps
= 256;
685 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAddressRegs
= 0;
686 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
= 1024;
687 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
=
688 MIN2(ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
,
689 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
);
691 /* Fragment shaders use real, 32-bit twos-complement integers for all
694 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMin
= 31;
695 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMax
= 30;
696 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.Precision
= 0;
697 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
698 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
700 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMin
= 31;
701 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMax
= 30;
702 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.Precision
= 0;
703 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
704 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
706 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
707 * but we're not sure how it's actually done for vertex order,
708 * that affect provoking vertex decision. Always use last vertex
709 * convention for quad primitive which works as expected for now.
712 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
714 ctx
->Const
.NativeIntegers
= true;
715 ctx
->Const
.VertexID_is_zero_based
= true;
717 /* Regarding the CMP instruction, the Ivybridge PRM says:
719 * "For each enabled channel 0b or 1b is assigned to the appropriate flag
720 * bit and 0/all zeros or all ones (e.g, byte 0xFF, word 0xFFFF, DWord
721 * 0xFFFFFFFF) is assigned to dst."
723 * but PRMs for earlier generations say
725 * "In dword format, one GRF may store up to 8 results. When the register
726 * is used later as a vector of Booleans, as only LSB at each channel
727 * contains meaning [sic] data, software should make sure all higher bits
728 * are masked out (e.g. by 'and-ing' an [sic] 0x01 constant)."
730 * We select the representation of a true boolean uniform to be ~0, and fix
731 * the results of Gen <= 5 CMP instruction's with -(result & 1).
733 ctx
->Const
.UniformBooleanTrue
= ~0;
735 /* From the gen4 PRM, volume 4 page 127:
737 * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies
738 * the base address of the first element of the surface, computed in
739 * software by adding the surface base address to the byte offset of
740 * the element in the buffer."
742 * However, unaligned accesses are slower, so enforce buffer alignment.
744 ctx
->Const
.UniformBufferOffsetAlignment
= 16;
746 /* ShaderStorageBufferOffsetAlignment should be a cacheline (64 bytes) so
747 * that we can safely have the CPU and GPU writing the same SSBO on
748 * non-cachecoherent systems (our Atom CPUs). With UBOs, the GPU never
749 * writes, so there's no problem. For an SSBO, the GPU and the CPU can
750 * be updating disjoint regions of the buffer simultaneously and that will
751 * break if the regions overlap the same cacheline.
753 ctx
->Const
.ShaderStorageBufferOffsetAlignment
= 64;
754 ctx
->Const
.TextureBufferOffsetAlignment
= 16;
755 ctx
->Const
.MaxTextureBufferSize
= 128 * 1024 * 1024;
758 ctx
->Const
.MaxVarying
= 32;
759 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= 128;
760 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= 64;
761 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= 128;
762 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= 128;
763 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxInputComponents
= 128;
764 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxOutputComponents
= 128;
765 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxInputComponents
= 128;
766 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxOutputComponents
= 128;
769 /* We want the GLSL compiler to emit code that uses condition codes */
770 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
771 ctx
->Const
.ShaderCompilerOptions
[i
] =
772 brw
->screen
->compiler
->glsl_compiler_options
[i
];
776 ctx
->Const
.MaxViewportWidth
= 32768;
777 ctx
->Const
.MaxViewportHeight
= 32768;
780 /* ARB_viewport_array, OES_viewport_array */
781 if ((brw
->gen
>= 6 && ctx
->API
== API_OPENGL_CORE
) ||
782 (brw
->gen
>= 8 && ctx
->API
== API_OPENGLES2
)) {
783 ctx
->Const
.MaxViewports
= GEN6_NUM_VIEWPORTS
;
784 ctx
->Const
.ViewportSubpixelBits
= 0;
786 /* Cast to float before negating because MaxViewportWidth is unsigned.
788 ctx
->Const
.ViewportBounds
.Min
= -(float)ctx
->Const
.MaxViewportWidth
;
789 ctx
->Const
.ViewportBounds
.Max
= ctx
->Const
.MaxViewportWidth
;
792 /* ARB_gpu_shader5 */
794 ctx
->Const
.MaxVertexStreams
= MIN2(4, MAX_VERTEX_STREAMS
);
796 /* ARB_framebuffer_no_attachments */
797 ctx
->Const
.MaxFramebufferWidth
= 16384;
798 ctx
->Const
.MaxFramebufferHeight
= 16384;
799 ctx
->Const
.MaxFramebufferLayers
= ctx
->Const
.MaxArrayTextureLayers
;
800 ctx
->Const
.MaxFramebufferSamples
= max_samples
;
802 /* OES_primitive_bounding_box */
803 ctx
->Const
.NoPrimitiveBoundingBoxOutput
= true;
807 brw_initialize_cs_context_constants(struct brw_context
*brw
)
809 struct gl_context
*ctx
= &brw
->ctx
;
810 const struct intel_screen
*screen
= brw
->screen
;
811 struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
813 /* FINISHME: Do this for all platforms that the kernel supports */
814 if (brw
->is_cherryview
&&
815 screen
->subslice_total
> 0 && screen
->eu_total
> 0) {
816 /* Logical CS threads = EUs per subslice * 7 threads per EU */
817 uint32_t max_cs_threads
= screen
->eu_total
/ screen
->subslice_total
* 7;
819 /* Fuse configurations may give more threads than expected, never less. */
820 if (max_cs_threads
> devinfo
->max_cs_threads
)
821 devinfo
->max_cs_threads
= max_cs_threads
;
824 /* Maximum number of scalar compute shader invocations that can be run in
825 * parallel in the same subslice assuming SIMD32 dispatch.
827 * We don't advertise more than 64 threads, because we are limited to 64 by
828 * our usage of thread_width_max in the gpgpu walker command. This only
829 * currently impacts Haswell, which otherwise might be able to advertise 70
830 * threads. With SIMD32 and 64 threads, Haswell still provides twice the
831 * required the number of invocation needed for ARB_compute_shader.
833 const unsigned max_threads
= MIN2(64, devinfo
->max_cs_threads
);
834 const uint32_t max_invocations
= 32 * max_threads
;
835 ctx
->Const
.MaxComputeWorkGroupSize
[0] = max_invocations
;
836 ctx
->Const
.MaxComputeWorkGroupSize
[1] = max_invocations
;
837 ctx
->Const
.MaxComputeWorkGroupSize
[2] = max_invocations
;
838 ctx
->Const
.MaxComputeWorkGroupInvocations
= max_invocations
;
839 ctx
->Const
.MaxComputeSharedMemorySize
= 64 * 1024;
843 * Process driconf (drirc) options, setting appropriate context flags.
845 * intelInitExtensions still pokes at optionCache directly, in order to
846 * avoid advertising various extensions. No flags are set, so it makes
847 * sense to continue doing that there.
850 brw_process_driconf_options(struct brw_context
*brw
)
852 struct gl_context
*ctx
= &brw
->ctx
;
854 driOptionCache
*options
= &brw
->optionCache
;
855 driParseConfigFiles(options
, &brw
->screen
->optionCache
,
856 brw
->driContext
->driScreenPriv
->myNum
, "i965");
858 int bo_reuse_mode
= driQueryOptioni(options
, "bo_reuse");
859 switch (bo_reuse_mode
) {
860 case DRI_CONF_BO_REUSE_DISABLED
:
862 case DRI_CONF_BO_REUSE_ALL
:
863 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
867 if (!driQueryOptionb(options
, "hiz")) {
868 brw
->has_hiz
= false;
869 /* On gen6, you can only do separate stencil with HIZ. */
871 brw
->has_separate_stencil
= false;
874 if (driQueryOptionb(options
, "always_flush_batch")) {
875 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
876 brw
->always_flush_batch
= true;
879 if (driQueryOptionb(options
, "always_flush_cache")) {
880 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
881 brw
->always_flush_cache
= true;
884 if (driQueryOptionb(options
, "disable_throttling")) {
885 fprintf(stderr
, "disabling flush throttling\n");
886 brw
->disable_throttling
= true;
889 brw
->precompile
= driQueryOptionb(&brw
->optionCache
, "shader_precompile");
891 if (driQueryOptionb(&brw
->optionCache
, "precise_trig"))
892 brw
->screen
->compiler
->precise_trig
= true;
894 ctx
->Const
.ForceGLSLExtensionsWarn
=
895 driQueryOptionb(options
, "force_glsl_extensions_warn");
897 ctx
->Const
.DisableGLSLLineContinuations
=
898 driQueryOptionb(options
, "disable_glsl_line_continuations");
900 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
=
901 driQueryOptionb(options
, "allow_glsl_extension_directive_midshader");
903 ctx
->Const
.GLSLZeroInit
= driQueryOptionb(options
, "glsl_zero_init");
905 brw
->dual_color_blend_by_location
=
906 driQueryOptionb(options
, "dual_color_blend_by_location");
910 brwCreateContext(gl_api api
,
911 const struct gl_config
*mesaVis
,
912 __DRIcontext
*driContextPriv
,
913 unsigned major_version
,
914 unsigned minor_version
,
917 unsigned *dri_ctx_error
,
918 void *sharedContextPrivate
)
920 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
921 struct intel_screen
*screen
= driContextPriv
->driScreenPriv
->driverPrivate
;
922 const struct gen_device_info
*devinfo
= &screen
->devinfo
;
923 struct dd_function_table functions
;
925 /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel
926 * provides us with context reset notifications.
928 uint32_t allowed_flags
= __DRI_CTX_FLAG_DEBUG
929 | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
;
931 if (screen
->has_context_reset_notification
)
932 allowed_flags
|= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
;
934 if (flags
& ~allowed_flags
) {
935 *dri_ctx_error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
939 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
941 fprintf(stderr
, "%s: failed to alloc context\n", __func__
);
942 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
946 driContextPriv
->driverPrivate
= brw
;
947 brw
->driContext
= driContextPriv
;
948 brw
->screen
= screen
;
949 brw
->bufmgr
= screen
->bufmgr
;
951 brw
->gen
= devinfo
->gen
;
952 brw
->gt
= devinfo
->gt
;
953 brw
->is_g4x
= devinfo
->is_g4x
;
954 brw
->is_baytrail
= devinfo
->is_baytrail
;
955 brw
->is_haswell
= devinfo
->is_haswell
;
956 brw
->is_cherryview
= devinfo
->is_cherryview
;
957 brw
->is_broxton
= devinfo
->is_broxton
;
958 brw
->has_llc
= devinfo
->has_llc
;
959 brw
->has_hiz
= devinfo
->has_hiz_and_separate_stencil
;
960 brw
->has_separate_stencil
= devinfo
->has_hiz_and_separate_stencil
;
961 brw
->has_pln
= devinfo
->has_pln
;
962 brw
->has_compr4
= devinfo
->has_compr4
;
963 brw
->has_surface_tile_offset
= devinfo
->has_surface_tile_offset
;
964 brw
->has_negative_rhw_bug
= devinfo
->has_negative_rhw_bug
;
965 brw
->needs_unlit_centroid_workaround
=
966 devinfo
->needs_unlit_centroid_workaround
;
968 brw
->must_use_separate_stencil
= devinfo
->must_use_separate_stencil
;
969 brw
->has_swizzling
= screen
->hw_has_swizzling
;
971 isl_device_init(&brw
->isl_dev
, devinfo
, screen
->hw_has_swizzling
);
973 brw
->vs
.base
.stage
= MESA_SHADER_VERTEX
;
974 brw
->tcs
.base
.stage
= MESA_SHADER_TESS_CTRL
;
975 brw
->tes
.base
.stage
= MESA_SHADER_TESS_EVAL
;
976 brw
->gs
.base
.stage
= MESA_SHADER_GEOMETRY
;
977 brw
->wm
.base
.stage
= MESA_SHADER_FRAGMENT
;
979 gen8_init_vtable_surface_functions(brw
);
980 brw
->vtbl
.emit_depth_stencil_hiz
= gen8_emit_depth_stencil_hiz
;
981 } else if (brw
->gen
>= 7) {
982 gen7_init_vtable_surface_functions(brw
);
983 brw
->vtbl
.emit_depth_stencil_hiz
= gen7_emit_depth_stencil_hiz
;
984 } else if (brw
->gen
>= 6) {
985 gen6_init_vtable_surface_functions(brw
);
986 brw
->vtbl
.emit_depth_stencil_hiz
= gen6_emit_depth_stencil_hiz
;
988 gen4_init_vtable_surface_functions(brw
);
989 brw
->vtbl
.emit_depth_stencil_hiz
= brw_emit_depth_stencil_hiz
;
992 brw_init_driver_functions(brw
, &functions
);
995 functions
.GetGraphicsResetStatus
= brw_get_graphics_reset_status
;
997 struct gl_context
*ctx
= &brw
->ctx
;
999 if (!_mesa_initialize_context(ctx
, api
, mesaVis
, shareCtx
, &functions
)) {
1000 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
1001 fprintf(stderr
, "%s: failed to init mesa context\n", __func__
);
1002 intelDestroyContext(driContextPriv
);
1006 driContextSetFlags(ctx
, flags
);
1008 /* Initialize the software rasterizer and helper modules.
1010 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
1011 * software fallbacks (which we have to support on legacy GL to do weird
1012 * glDrawPixels(), glBitmap(), and other functions).
1014 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
1015 _swrast_CreateContext(ctx
);
1018 _vbo_CreateContext(ctx
);
1019 if (ctx
->swrast_context
) {
1020 _tnl_CreateContext(ctx
);
1021 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= _tnl_run_pipeline
;
1022 _swsetup_CreateContext(ctx
);
1024 /* Configure swrast to match hardware characteristics: */
1025 _swrast_allow_pixel_fog(ctx
, false);
1026 _swrast_allow_vertex_fog(ctx
, true);
1029 _mesa_meta_init(ctx
);
1031 brw_process_driconf_options(brw
);
1033 if (INTEL_DEBUG
& DEBUG_PERF
)
1034 brw
->perf_debug
= true;
1036 brw_initialize_cs_context_constants(brw
);
1037 brw_initialize_context_constants(brw
);
1039 ctx
->Const
.ResetStrategy
= notify_reset
1040 ? GL_LOSE_CONTEXT_ON_RESET_ARB
: GL_NO_RESET_NOTIFICATION_ARB
;
1042 /* Reinitialize the context point state. It depends on ctx->Const values. */
1043 _mesa_init_point(ctx
);
1045 intel_fbo_init(brw
);
1047 intel_batchbuffer_init(brw
);
1049 if (brw
->gen
>= 6) {
1050 /* Create a new hardware context. Using a hardware context means that
1051 * our GPU state will be saved/restored on context switch, allowing us
1052 * to assume that the GPU is in the same state we left it in.
1054 * This is required for transform feedback buffer offsets, query objects,
1055 * and also allows us to reduce how much state we have to emit.
1057 brw
->hw_ctx
= drm_intel_gem_context_create(brw
->bufmgr
);
1060 fprintf(stderr
, "Gen6+ requires Kernel 3.6 or later.\n");
1061 intelDestroyContext(driContextPriv
);
1066 if (brw_init_pipe_control(brw
, devinfo
)) {
1067 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
1068 intelDestroyContext(driContextPriv
);
1072 brw_init_state(brw
);
1074 intelInitExtensions(ctx
);
1076 brw_init_surface_formats(brw
);
1079 brw_blorp_init(brw
);
1081 brw
->urb
.size
= devinfo
->urb
.size
;
1084 brw
->urb
.gs_present
= false;
1086 brw
->prim_restart
.in_progress
= false;
1087 brw
->prim_restart
.enable_cut_index
= false;
1088 brw
->gs
.enabled
= false;
1089 brw
->sf
.viewport_transform_enable
= true;
1090 brw
->clip
.viewport_count
= 1;
1092 brw
->predicate
.state
= BRW_PREDICATE_STATE_RENDER
;
1094 brw
->max_gtt_map_object_size
= screen
->max_gtt_map_object_size
;
1096 brw
->use_resource_streamer
= screen
->has_resource_streamer
&&
1097 (env_var_as_boolean("INTEL_USE_HW_BT", false) ||
1098 env_var_as_boolean("INTEL_USE_GATHER", false));
1100 ctx
->VertexProgram
._MaintainTnlProgram
= true;
1101 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
1103 brw_draw_init( brw
);
1105 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0) {
1106 /* Turn on some extra GL_ARB_debug_output generation. */
1107 brw
->perf_debug
= true;
1110 if ((flags
& __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
) != 0) {
1111 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
1112 ctx
->Const
.RobustAccess
= GL_TRUE
;
1115 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
1116 brw_init_shader_time(brw
);
1118 _mesa_compute_version(ctx
);
1120 _mesa_initialize_dispatch_tables(ctx
);
1121 _mesa_initialize_vbo_vtxfmt(ctx
);
1123 if (ctx
->Extensions
.AMD_performance_monitor
) {
1124 brw_init_performance_monitors(brw
);
1127 vbo_use_buffer_objects(ctx
);
1128 vbo_always_unmap_buffers(ctx
);
1134 intelDestroyContext(__DRIcontext
* driContextPriv
)
1136 struct brw_context
*brw
=
1137 (struct brw_context
*) driContextPriv
->driverPrivate
;
1138 struct gl_context
*ctx
= &brw
->ctx
;
1140 /* Dump a final BMP in case the application doesn't call SwapBuffers */
1141 if (INTEL_DEBUG
& DEBUG_AUB
) {
1142 intel_batchbuffer_flush(brw
);
1143 aub_dump_bmp(&brw
->ctx
);
1146 _mesa_meta_free(&brw
->ctx
);
1148 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
1149 /* Force a report. */
1150 brw
->shader_time
.report_time
= 0;
1152 brw_collect_and_report_shader_time(brw
);
1153 brw_destroy_shader_time(brw
);
1157 blorp_finish(&brw
->blorp
);
1159 brw_destroy_state(brw
);
1160 brw_draw_destroy(brw
);
1162 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
1163 if (brw
->vs
.base
.scratch_bo
)
1164 drm_intel_bo_unreference(brw
->vs
.base
.scratch_bo
);
1165 if (brw
->tcs
.base
.scratch_bo
)
1166 drm_intel_bo_unreference(brw
->tcs
.base
.scratch_bo
);
1167 if (brw
->tes
.base
.scratch_bo
)
1168 drm_intel_bo_unreference(brw
->tes
.base
.scratch_bo
);
1169 if (brw
->gs
.base
.scratch_bo
)
1170 drm_intel_bo_unreference(brw
->gs
.base
.scratch_bo
);
1171 if (brw
->wm
.base
.scratch_bo
)
1172 drm_intel_bo_unreference(brw
->wm
.base
.scratch_bo
);
1174 gen7_reset_hw_bt_pool_offsets(brw
);
1175 drm_intel_bo_unreference(brw
->hw_bt_pool
.bo
);
1176 brw
->hw_bt_pool
.bo
= NULL
;
1178 drm_intel_gem_context_destroy(brw
->hw_ctx
);
1180 if (ctx
->swrast_context
) {
1181 _swsetup_DestroyContext(&brw
->ctx
);
1182 _tnl_DestroyContext(&brw
->ctx
);
1184 _vbo_DestroyContext(&brw
->ctx
);
1186 if (ctx
->swrast_context
)
1187 _swrast_DestroyContext(&brw
->ctx
);
1189 brw_fini_pipe_control(brw
);
1190 intel_batchbuffer_free(brw
);
1192 drm_intel_bo_unreference(brw
->throttle_batch
[1]);
1193 drm_intel_bo_unreference(brw
->throttle_batch
[0]);
1194 brw
->throttle_batch
[1] = NULL
;
1195 brw
->throttle_batch
[0] = NULL
;
1197 driDestroyOptionCache(&brw
->optionCache
);
1199 /* free the Mesa context */
1200 _mesa_free_context_data(&brw
->ctx
);
1203 driContextPriv
->driverPrivate
= NULL
;
1207 intelUnbindContext(__DRIcontext
* driContextPriv
)
1209 /* Unset current context and dispath table */
1210 _mesa_make_current(NULL
, NULL
, NULL
);
1216 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
1217 * on window system framebuffers.
1219 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
1220 * your renderbuffer can do sRGB encode, and you can flip a switch that does
1221 * sRGB encode if the renderbuffer can handle it. You can ask specifically
1222 * for a visual where you're guaranteed to be capable, but it turns out that
1223 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
1224 * incapable ones, because there's no difference between the two in resources
1225 * used. Applications thus get built that accidentally rely on the default
1226 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
1229 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
1230 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
1231 * So they removed the enable knob and made it "if the renderbuffer is sRGB
1232 * capable, do sRGB encode". Then, for your window system renderbuffers, you
1233 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
1234 * and get no sRGB encode (assuming that both kinds of visual are available).
1235 * Thus our choice to support sRGB by default on our visuals for desktop would
1236 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
1238 * Unfortunately, renderbuffer setup happens before a context is created. So
1239 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
1240 * context (without an sRGB visual, though we don't have sRGB visuals exposed
1241 * yet), we go turn that back off before anyone finds out.
1244 intel_gles3_srgb_workaround(struct brw_context
*brw
,
1245 struct gl_framebuffer
*fb
)
1247 struct gl_context
*ctx
= &brw
->ctx
;
1249 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
1252 /* Some day when we support the sRGB capable bit on visuals available for
1253 * GLES, we'll need to respect that and not disable things here.
1255 fb
->Visual
.sRGBCapable
= false;
1256 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
1257 struct gl_renderbuffer
*rb
= fb
->Attachment
[i
].Renderbuffer
;
1259 rb
->Format
= _mesa_get_srgb_format_linear(rb
->Format
);
1264 intelMakeCurrent(__DRIcontext
* driContextPriv
,
1265 __DRIdrawable
* driDrawPriv
,
1266 __DRIdrawable
* driReadPriv
)
1268 struct brw_context
*brw
;
1269 GET_CURRENT_CONTEXT(curCtx
);
1272 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
1276 /* According to the glXMakeCurrent() man page: "Pending commands to
1277 * the previous context, if any, are flushed before it is released."
1278 * But only flush if we're actually changing contexts.
1280 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
1281 _mesa_flush(curCtx
);
1284 if (driContextPriv
) {
1285 struct gl_context
*ctx
= &brw
->ctx
;
1286 struct gl_framebuffer
*fb
, *readFb
;
1288 if (driDrawPriv
== NULL
) {
1289 fb
= _mesa_get_incomplete_framebuffer();
1291 fb
= driDrawPriv
->driverPrivate
;
1292 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
1295 if (driReadPriv
== NULL
) {
1296 readFb
= _mesa_get_incomplete_framebuffer();
1298 readFb
= driReadPriv
->driverPrivate
;
1299 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
1302 /* The sRGB workaround changes the renderbuffer's format. We must change
1303 * the format before the renderbuffer's miptree get's allocated, otherwise
1304 * the formats of the renderbuffer and its miptree will differ.
1306 intel_gles3_srgb_workaround(brw
, fb
);
1307 intel_gles3_srgb_workaround(brw
, readFb
);
1309 /* If the context viewport hasn't been initialized, force a call out to
1310 * the loader to get buffers so we have a drawable size for the initial
1312 if (!brw
->ctx
.ViewportInitialized
)
1313 intel_prepare_render(brw
);
1315 _mesa_make_current(ctx
, fb
, readFb
);
1317 _mesa_make_current(NULL
, NULL
, NULL
);
1324 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
1325 __DRIdrawable
*drawable
)
1328 /* MSAA and fast color clear are not supported, so don't waste time
1329 * checking whether a resolve is needed.
1334 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1335 struct intel_renderbuffer
*rb
;
1337 /* Usually, only the back buffer will need to be downsampled. However,
1338 * the front buffer will also need it if the user has rendered into it.
1340 static const gl_buffer_index buffers
[2] = {
1345 for (int i
= 0; i
< 2; ++i
) {
1346 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
1347 if (rb
== NULL
|| rb
->mt
== NULL
)
1349 if (rb
->mt
->num_samples
<= 1)
1350 intel_miptree_resolve_color(brw
, rb
->mt
, 0);
1352 intel_renderbuffer_downsample(brw
, rb
);
1357 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1359 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1363 intel_query_dri2_buffers(struct brw_context
*brw
,
1364 __DRIdrawable
*drawable
,
1365 __DRIbuffer
**buffers
,
1369 intel_process_dri2_buffer(struct brw_context
*brw
,
1370 __DRIdrawable
*drawable
,
1371 __DRIbuffer
*buffer
,
1372 struct intel_renderbuffer
*rb
,
1373 const char *buffer_name
);
1376 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1379 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1381 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1382 struct intel_renderbuffer
*rb
;
1383 __DRIbuffer
*buffers
= NULL
;
1385 const char *region_name
;
1387 /* Set this up front, so that in case our buffers get invalidated
1388 * while we're getting new buffers, we don't clobber the stamp and
1389 * thus ignore the invalidate. */
1390 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1392 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1393 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1395 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1397 if (buffers
== NULL
)
1400 for (i
= 0; i
< count
; i
++) {
1401 switch (buffers
[i
].attachment
) {
1402 case __DRI_BUFFER_FRONT_LEFT
:
1403 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1404 region_name
= "dri2 front buffer";
1407 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1408 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1409 region_name
= "dri2 fake front buffer";
1412 case __DRI_BUFFER_BACK_LEFT
:
1413 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1414 region_name
= "dri2 back buffer";
1417 case __DRI_BUFFER_DEPTH
:
1418 case __DRI_BUFFER_HIZ
:
1419 case __DRI_BUFFER_DEPTH_STENCIL
:
1420 case __DRI_BUFFER_STENCIL
:
1421 case __DRI_BUFFER_ACCUM
:
1424 "unhandled buffer attach event, attachment type %d\n",
1425 buffers
[i
].attachment
);
1429 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1435 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1437 struct brw_context
*brw
= context
->driverPrivate
;
1438 __DRIscreen
*dri_screen
= brw
->screen
->driScrnPriv
;
1440 /* Set this up front, so that in case our buffers get invalidated
1441 * while we're getting new buffers, we don't clobber the stamp and
1442 * thus ignore the invalidate. */
1443 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1445 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1446 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1448 if (dri_screen
->image
.loader
)
1449 intel_update_image_buffers(brw
, drawable
);
1451 intel_update_dri2_buffers(brw
, drawable
);
1453 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1457 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1458 * state is required.
1461 intel_prepare_render(struct brw_context
*brw
)
1463 struct gl_context
*ctx
= &brw
->ctx
;
1464 __DRIcontext
*driContext
= brw
->driContext
;
1465 __DRIdrawable
*drawable
;
1467 drawable
= driContext
->driDrawablePriv
;
1468 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1469 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1470 intel_update_renderbuffers(driContext
, drawable
);
1471 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1474 drawable
= driContext
->driReadablePriv
;
1475 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1476 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1477 intel_update_renderbuffers(driContext
, drawable
);
1478 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1481 /* If we're currently rendering to the front buffer, the rendering
1482 * that will happen next will probably dirty the front buffer. So
1483 * mark it as dirty here.
1485 if (_mesa_is_front_buffer_drawing(ctx
->DrawBuffer
))
1486 brw
->front_buffer_dirty
= true;
1490 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1492 * To determine which DRI buffers to request, examine the renderbuffers
1493 * attached to the drawable's framebuffer. Then request the buffers with
1494 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1496 * This is called from intel_update_renderbuffers().
1498 * \param drawable Drawable whose buffers are queried.
1499 * \param buffers [out] List of buffers returned by DRI2 query.
1500 * \param buffer_count [out] Number of buffers returned.
1502 * \see intel_update_renderbuffers()
1503 * \see DRI2GetBuffers()
1504 * \see DRI2GetBuffersWithFormat()
1507 intel_query_dri2_buffers(struct brw_context
*brw
,
1508 __DRIdrawable
*drawable
,
1509 __DRIbuffer
**buffers
,
1512 __DRIscreen
*dri_screen
= brw
->screen
->driScrnPriv
;
1513 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1515 unsigned attachments
[8];
1517 struct intel_renderbuffer
*front_rb
;
1518 struct intel_renderbuffer
*back_rb
;
1520 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1521 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1523 memset(attachments
, 0, sizeof(attachments
));
1524 if ((_mesa_is_front_buffer_drawing(fb
) ||
1525 _mesa_is_front_buffer_reading(fb
) ||
1526 !back_rb
) && front_rb
) {
1527 /* If a fake front buffer is in use, then querying for
1528 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1529 * the real front buffer to the fake front buffer. So before doing the
1530 * query, we need to make sure all the pending drawing has landed in the
1531 * real front buffer.
1533 intel_batchbuffer_flush(brw
);
1534 intel_flush_front(&brw
->ctx
);
1536 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1537 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1538 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1539 /* We have pending front buffer rendering, but we aren't querying for a
1540 * front buffer. If the front buffer we have is a fake front buffer,
1541 * the X server is going to throw it away when it processes the query.
1542 * So before doing the query, make sure all the pending drawing has
1543 * landed in the real front buffer.
1545 intel_batchbuffer_flush(brw
);
1546 intel_flush_front(&brw
->ctx
);
1550 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1551 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1554 assert(i
<= ARRAY_SIZE(attachments
));
1557 dri_screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1562 drawable
->loaderPrivate
);
1566 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1568 * This is called from intel_update_renderbuffers().
1571 * DRI buffers whose attachment point is DRI2BufferStencil or
1572 * DRI2BufferDepthStencil are handled as special cases.
1574 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1575 * that is passed to drm_intel_bo_gem_create_from_name().
1577 * \see intel_update_renderbuffers()
1580 intel_process_dri2_buffer(struct brw_context
*brw
,
1581 __DRIdrawable
*drawable
,
1582 __DRIbuffer
*buffer
,
1583 struct intel_renderbuffer
*rb
,
1584 const char *buffer_name
)
1586 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1592 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1594 /* We try to avoid closing and reopening the same BO name, because the first
1595 * use of a mapping of the buffer involves a bunch of page faulting which is
1596 * moderately expensive.
1598 struct intel_mipmap_tree
*last_mt
;
1599 if (num_samples
== 0)
1602 last_mt
= rb
->singlesample_mt
;
1604 uint32_t old_name
= 0;
1606 /* The bo already has a name because the miptree was created by a
1607 * previous call to intel_process_dri2_buffer(). If a bo already has a
1608 * name, then drm_intel_bo_flink() is a low-cost getter. It does not
1609 * create a new name.
1611 drm_intel_bo_flink(last_mt
->bo
, &old_name
);
1614 if (old_name
== buffer
->name
)
1617 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1619 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1620 buffer
->name
, buffer
->attachment
,
1621 buffer
->cpp
, buffer
->pitch
);
1624 bo
= drm_intel_bo_gem_create_from_name(brw
->bufmgr
, buffer_name
,
1628 "Failed to open BO for returned DRI2 buffer "
1629 "(%dx%d, %s, named %d).\n"
1630 "This is likely a bug in the X Server that will lead to a "
1632 drawable
->w
, drawable
->h
, buffer_name
, buffer
->name
);
1636 intel_update_winsys_renderbuffer_miptree(brw
, rb
, bo
,
1637 drawable
->w
, drawable
->h
,
1640 if (_mesa_is_front_buffer_drawing(fb
) &&
1641 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1642 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1643 rb
->Base
.Base
.NumSamples
> 1) {
1644 intel_renderbuffer_upsample(brw
, rb
);
1649 drm_intel_bo_unreference(bo
);
1653 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1655 * To determine which DRI buffers to request, examine the renderbuffers
1656 * attached to the drawable's framebuffer. Then request the buffers from
1659 * This is called from intel_update_renderbuffers().
1661 * \param drawable Drawable whose buffers are queried.
1662 * \param buffers [out] List of buffers returned by DRI2 query.
1663 * \param buffer_count [out] Number of buffers returned.
1665 * \see intel_update_renderbuffers()
1669 intel_update_image_buffer(struct brw_context
*intel
,
1670 __DRIdrawable
*drawable
,
1671 struct intel_renderbuffer
*rb
,
1673 enum __DRIimageBufferMask buffer_type
)
1675 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1677 if (!rb
|| !buffer
->bo
)
1680 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1682 /* Check and see if we're already bound to the right
1685 struct intel_mipmap_tree
*last_mt
;
1686 if (num_samples
== 0)
1689 last_mt
= rb
->singlesample_mt
;
1691 if (last_mt
&& last_mt
->bo
== buffer
->bo
)
1694 intel_update_winsys_renderbuffer_miptree(intel
, rb
, buffer
->bo
,
1695 buffer
->width
, buffer
->height
,
1698 if (_mesa_is_front_buffer_drawing(fb
) &&
1699 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1700 rb
->Base
.Base
.NumSamples
> 1) {
1701 intel_renderbuffer_upsample(intel
, rb
);
1706 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1708 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1709 __DRIscreen
*dri_screen
= brw
->screen
->driScrnPriv
;
1710 struct intel_renderbuffer
*front_rb
;
1711 struct intel_renderbuffer
*back_rb
;
1712 struct __DRIimageList images
;
1713 unsigned int format
;
1714 uint32_t buffer_mask
= 0;
1717 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1718 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1721 format
= intel_rb_format(back_rb
);
1723 format
= intel_rb_format(front_rb
);
1727 if (front_rb
&& (_mesa_is_front_buffer_drawing(fb
) ||
1728 _mesa_is_front_buffer_reading(fb
) || !back_rb
)) {
1729 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1733 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1735 ret
= dri_screen
->image
.loader
->getBuffers(drawable
,
1736 driGLFormatToImageFormat(format
),
1737 &drawable
->dri2
.stamp
,
1738 drawable
->loaderPrivate
,
1744 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1745 drawable
->w
= images
.front
->width
;
1746 drawable
->h
= images
.front
->height
;
1747 intel_update_image_buffer(brw
,
1751 __DRI_IMAGE_BUFFER_FRONT
);
1753 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1754 drawable
->w
= images
.back
->width
;
1755 drawable
->h
= images
.back
->height
;
1756 intel_update_image_buffer(brw
,
1760 __DRI_IMAGE_BUFFER_BACK
);