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"
53 #include "brw_shader.h"
55 #include "brw_state.h"
57 #include "intel_batchbuffer.h"
58 #include "intel_buffer_objects.h"
59 #include "intel_buffers.h"
60 #include "intel_fbo.h"
61 #include "intel_mipmap_tree.h"
62 #include "intel_pixel.h"
63 #include "intel_image.h"
64 #include "intel_tex.h"
65 #include "intel_tex_obj.h"
67 #include "swrast_setup/swrast_setup.h"
69 #include "tnl/t_pipeline.h"
70 #include "util/ralloc.h"
72 /***************************************
73 * Mesa's Driver Functions
74 ***************************************/
77 brw_query_samples_for_format(struct gl_context
*ctx
, GLenum target
,
78 GLenum internalFormat
, int samples
[16])
80 struct brw_context
*brw
= brw_context(ctx
);
102 assert(brw
->gen
< 6);
108 const char *const brw_vendor_string
= "Intel Open Source Technology Center";
111 brw_get_renderer_string(unsigned deviceID
)
114 static char buffer
[128];
118 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
119 #include "pci_ids/i965_pci_ids.h"
121 chipset
= "Unknown Intel Chipset";
125 (void) driGetRendererString(buffer
, chipset
, 0);
129 static const GLubyte
*
130 intel_get_string(struct gl_context
* ctx
, GLenum name
)
132 const struct brw_context
*const brw
= brw_context(ctx
);
136 return (GLubyte
*) brw_vendor_string
;
140 (GLubyte
*) brw_get_renderer_string(brw
->intelScreen
->deviceID
);
148 intel_viewport(struct gl_context
*ctx
)
150 struct brw_context
*brw
= brw_context(ctx
);
151 __DRIcontext
*driContext
= brw
->driContext
;
153 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
154 dri2InvalidateDrawable(driContext
->driDrawablePriv
);
155 dri2InvalidateDrawable(driContext
->driReadablePriv
);
160 intel_update_state(struct gl_context
* ctx
, GLuint new_state
)
162 struct brw_context
*brw
= brw_context(ctx
);
163 struct intel_texture_object
*tex_obj
;
164 struct intel_renderbuffer
*depth_irb
;
166 if (ctx
->swrast_context
)
167 _swrast_InvalidateState(ctx
, new_state
);
168 _vbo_InvalidateState(ctx
, new_state
);
170 brw
->NewGLState
|= new_state
;
172 _mesa_unlock_context_textures(ctx
);
174 /* Resolve the depth buffer's HiZ buffer. */
175 depth_irb
= intel_get_renderbuffer(ctx
->DrawBuffer
, BUFFER_DEPTH
);
177 intel_renderbuffer_resolve_hiz(brw
, depth_irb
);
179 /* Resolve depth buffer and render cache of each enabled texture. */
180 int maxEnabledUnit
= ctx
->Texture
._MaxEnabledTexImageUnit
;
181 for (int i
= 0; i
<= maxEnabledUnit
; i
++) {
182 if (!ctx
->Texture
.Unit
[i
]._Current
)
184 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
185 if (!tex_obj
|| !tex_obj
->mt
)
187 intel_miptree_all_slices_resolve_depth(brw
, tex_obj
->mt
);
188 intel_miptree_resolve_color(brw
, tex_obj
->mt
);
189 brw_render_cache_set_check_flush(brw
, tex_obj
->mt
->bo
);
192 _mesa_lock_context_textures(ctx
);
195 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
198 intel_flush_front(struct gl_context
*ctx
)
200 struct brw_context
*brw
= brw_context(ctx
);
201 __DRIcontext
*driContext
= brw
->driContext
;
202 __DRIdrawable
*driDrawable
= driContext
->driDrawablePriv
;
203 __DRIscreen
*const screen
= brw
->intelScreen
->driScrnPriv
;
205 if (brw
->front_buffer_dirty
&& _mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
206 if (flushFront(screen
) && driDrawable
&&
207 driDrawable
->loaderPrivate
) {
209 /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
211 * This potentially resolves both front and back buffer. It
212 * is unnecessary to resolve the back, but harms nothing except
213 * performance. And no one cares about front-buffer render
216 intel_resolve_for_dri2_flush(brw
, driDrawable
);
217 intel_batchbuffer_flush(brw
);
219 flushFront(screen
)(driDrawable
, driDrawable
->loaderPrivate
);
221 /* We set the dirty bit in intel_prepare_render() if we're
222 * front buffer rendering once we get there.
224 brw
->front_buffer_dirty
= false;
230 intel_glFlush(struct gl_context
*ctx
)
232 struct brw_context
*brw
= brw_context(ctx
);
234 intel_batchbuffer_flush(brw
);
235 intel_flush_front(ctx
);
237 brw
->need_flush_throttle
= true;
241 intel_finish(struct gl_context
* ctx
)
243 struct brw_context
*brw
= brw_context(ctx
);
247 if (brw
->batch
.last_bo
)
248 drm_intel_bo_wait_rendering(brw
->batch
.last_bo
);
252 brw_init_driver_functions(struct brw_context
*brw
,
253 struct dd_function_table
*functions
)
255 _mesa_init_driver_functions(functions
);
257 /* GLX uses DRI2 invalidate events to handle window resizing.
258 * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
259 * which doesn't provide a mechanism for snooping the event queues.
261 * So EGL still relies on viewport hacks to handle window resizing.
262 * This should go away with DRI3000.
264 if (!brw
->driContext
->driScreenPriv
->dri2
.useInvalidate
)
265 functions
->Viewport
= intel_viewport
;
267 functions
->Flush
= intel_glFlush
;
268 functions
->Finish
= intel_finish
;
269 functions
->GetString
= intel_get_string
;
270 functions
->UpdateState
= intel_update_state
;
272 intelInitTextureFuncs(functions
);
273 intelInitTextureImageFuncs(functions
);
274 intelInitTextureSubImageFuncs(functions
);
275 intelInitTextureCopyImageFuncs(functions
);
276 intelInitCopyImageFuncs(functions
);
277 intelInitClearFuncs(functions
);
278 intelInitBufferFuncs(functions
);
279 intelInitPixelFuncs(functions
);
280 intelInitBufferObjectFuncs(functions
);
281 intel_init_syncobj_functions(functions
);
282 brw_init_object_purgeable_functions(functions
);
284 brwInitFragProgFuncs( functions
);
285 brw_init_common_queryobj_functions(functions
);
287 gen6_init_queryobj_functions(functions
);
289 gen4_init_queryobj_functions(functions
);
290 brw_init_compute_functions(functions
);
292 brw_init_conditional_render_functions(functions
);
294 functions
->QuerySamplesForFormat
= brw_query_samples_for_format
;
296 functions
->NewTransformFeedback
= brw_new_transform_feedback
;
297 functions
->DeleteTransformFeedback
= brw_delete_transform_feedback
;
298 functions
->GetTransformFeedbackVertexCount
=
299 brw_get_transform_feedback_vertex_count
;
301 functions
->BeginTransformFeedback
= gen7_begin_transform_feedback
;
302 functions
->EndTransformFeedback
= gen7_end_transform_feedback
;
303 functions
->PauseTransformFeedback
= gen7_pause_transform_feedback
;
304 functions
->ResumeTransformFeedback
= gen7_resume_transform_feedback
;
306 functions
->BeginTransformFeedback
= brw_begin_transform_feedback
;
307 functions
->EndTransformFeedback
= brw_end_transform_feedback
;
311 functions
->GetSamplePosition
= gen6_get_sample_position
;
315 brw_initialize_context_constants(struct brw_context
*brw
)
317 struct gl_context
*ctx
= &brw
->ctx
;
319 unsigned max_samplers
=
320 brw
->gen
>= 8 || brw
->is_haswell
? BRW_MAX_TEX_UNIT
: 16;
322 ctx
->Const
.QueryCounterBits
.Timestamp
= 36;
324 ctx
->Const
.StripTextureBorder
= true;
326 ctx
->Const
.MaxDualSourceDrawBuffers
= 1;
327 ctx
->Const
.MaxDrawBuffers
= BRW_MAX_DRAW_BUFFERS
;
328 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
= max_samplers
;
329 ctx
->Const
.MaxTextureCoordUnits
= 8; /* Mesa limit */
330 ctx
->Const
.MaxTextureUnits
=
331 MIN2(ctx
->Const
.MaxTextureCoordUnits
,
332 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
);
333 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
= max_samplers
;
335 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= max_samplers
;
337 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= 0;
338 if (_mesa_extension_override_enables
.ARB_compute_shader
) {
339 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= BRW_MAX_TEX_UNIT
;
340 ctx
->Const
.MaxUniformBufferBindings
+= 12;
342 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= 0;
344 ctx
->Const
.MaxCombinedTextureImageUnits
=
345 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
346 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
+
347 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
348 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
350 ctx
->Const
.MaxTextureLevels
= 14; /* 8192 */
351 if (ctx
->Const
.MaxTextureLevels
> MAX_TEXTURE_LEVELS
)
352 ctx
->Const
.MaxTextureLevels
= MAX_TEXTURE_LEVELS
;
353 ctx
->Const
.Max3DTextureLevels
= 12; /* 2048 */
354 ctx
->Const
.MaxCubeTextureLevels
= 14; /* 8192 */
355 ctx
->Const
.MaxTextureMbytes
= 1536;
358 ctx
->Const
.MaxArrayTextureLayers
= 2048;
360 ctx
->Const
.MaxArrayTextureLayers
= 512;
362 ctx
->Const
.MaxTextureRectSize
= 1 << 12;
364 ctx
->Const
.MaxTextureMaxAnisotropy
= 16.0;
366 ctx
->Const
.MaxRenderbufferSize
= 8192;
368 /* Hardware only supports a limited number of transform feedback buffers.
369 * So we need to override the Mesa default (which is based only on software
372 ctx
->Const
.MaxTransformFeedbackBuffers
= BRW_MAX_SOL_BUFFERS
;
374 /* On Gen6, in the worst case, we use up one binding table entry per
375 * transform feedback component (see comments above the definition of
376 * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value
377 * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to
378 * BRW_MAX_SOL_BINDINGS.
380 * In "separate components" mode, we need to divide this value by
381 * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries
382 * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS.
384 ctx
->Const
.MaxTransformFeedbackInterleavedComponents
= BRW_MAX_SOL_BINDINGS
;
385 ctx
->Const
.MaxTransformFeedbackSeparateComponents
=
386 BRW_MAX_SOL_BINDINGS
/ BRW_MAX_SOL_BUFFERS
;
388 ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
= true;
391 const int *msaa_modes
= intel_supported_msaa_modes(brw
->intelScreen
);
392 const int clamp_max_samples
=
393 driQueryOptioni(&brw
->optionCache
, "clamp_max_samples");
395 if (clamp_max_samples
< 0) {
396 max_samples
= msaa_modes
[0];
398 /* Select the largest supported MSAA mode that does not exceed
402 for (int i
= 0; msaa_modes
[i
] != 0; ++i
) {
403 if (msaa_modes
[i
] <= clamp_max_samples
) {
404 max_samples
= msaa_modes
[i
];
410 ctx
->Const
.MaxSamples
= max_samples
;
411 ctx
->Const
.MaxColorTextureSamples
= max_samples
;
412 ctx
->Const
.MaxDepthTextureSamples
= max_samples
;
413 ctx
->Const
.MaxIntegerSamples
= max_samples
;
415 /* gen6_set_sample_maps() sets SampleMap{2,4,8}x variables which are used
416 * to map indices of rectangular grid to sample numbers within a pixel.
417 * These variables are used by GL_EXT_framebuffer_multisample_blit_scaled
418 * extension implementation. For more details see the comment above
419 * gen6_set_sample_maps() definition.
421 gen6_set_sample_maps(ctx
);
424 ctx
->Const
.MaxProgramTextureGatherComponents
= 4;
425 else if (brw
->gen
== 6)
426 ctx
->Const
.MaxProgramTextureGatherComponents
= 1;
428 ctx
->Const
.MinLineWidth
= 1.0;
429 ctx
->Const
.MinLineWidthAA
= 1.0;
431 ctx
->Const
.MaxLineWidth
= 7.375;
432 ctx
->Const
.MaxLineWidthAA
= 7.375;
433 ctx
->Const
.LineWidthGranularity
= 0.125;
435 ctx
->Const
.MaxLineWidth
= 7.0;
436 ctx
->Const
.MaxLineWidthAA
= 7.0;
437 ctx
->Const
.LineWidthGranularity
= 0.5;
440 /* For non-antialiased lines, we have to round the line width to the
441 * nearest whole number. Make sure that we don't advertise a line
442 * width that, when rounded, will be beyond the actual hardware
445 assert(roundf(ctx
->Const
.MaxLineWidth
) <= ctx
->Const
.MaxLineWidth
);
447 ctx
->Const
.MinPointSize
= 1.0;
448 ctx
->Const
.MinPointSizeAA
= 1.0;
449 ctx
->Const
.MaxPointSize
= 255.0;
450 ctx
->Const
.MaxPointSizeAA
= 255.0;
451 ctx
->Const
.PointSizeGranularity
= 1.0;
453 if (brw
->gen
>= 5 || brw
->is_g4x
)
454 ctx
->Const
.MaxClipPlanes
= 8;
456 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeInstructions
= 16 * 1024;
457 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAluInstructions
= 0;
458 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexInstructions
= 0;
459 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexIndirections
= 0;
460 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAluInstructions
= 0;
461 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexInstructions
= 0;
462 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexIndirections
= 0;
463 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAttribs
= 16;
464 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTemps
= 256;
465 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAddressRegs
= 1;
466 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
= 1024;
467 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
=
468 MIN2(ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
,
469 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
);
471 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeInstructions
= 1024;
472 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAluInstructions
= 1024;
473 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexInstructions
= 1024;
474 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexIndirections
= 1024;
475 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAttribs
= 12;
476 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTemps
= 256;
477 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAddressRegs
= 0;
478 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
= 1024;
479 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
=
480 MIN2(ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
,
481 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
);
483 /* Fragment shaders use real, 32-bit twos-complement integers for all
486 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMin
= 31;
487 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMax
= 30;
488 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.Precision
= 0;
489 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
490 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
492 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMin
= 31;
493 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMax
= 30;
494 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.Precision
= 0;
495 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
496 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
499 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
500 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
501 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
502 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
503 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
= BRW_MAX_ABO
;
504 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
= BRW_MAX_ABO
;
505 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
= BRW_MAX_ABO
;
506 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
= BRW_MAX_ABO
;
507 ctx
->Const
.MaxCombinedAtomicBuffers
= 3 * BRW_MAX_ABO
;
509 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
=
511 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
=
512 (brw
->intelScreen
->compiler
->scalar_vs
? BRW_MAX_IMAGES
: 0);
513 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
=
515 ctx
->Const
.MaxImageUnits
= MAX_IMAGE_UNITS
;
516 ctx
->Const
.MaxCombinedImageUnitsAndFragmentOutputs
=
517 MAX_IMAGE_UNITS
+ BRW_MAX_DRAW_BUFFERS
;
518 ctx
->Const
.MaxImageSamples
= 0;
519 ctx
->Const
.MaxCombinedImageUniforms
= 3 * BRW_MAX_IMAGES
;
522 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
523 * but we're not sure how it's actually done for vertex order,
524 * that affect provoking vertex decision. Always use last vertex
525 * convention for quad primitive which works as expected for now.
528 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
530 ctx
->Const
.NativeIntegers
= true;
531 ctx
->Const
.VertexID_is_zero_based
= true;
533 /* Regarding the CMP instruction, the Ivybridge PRM says:
535 * "For each enabled channel 0b or 1b is assigned to the appropriate flag
536 * bit and 0/all zeros or all ones (e.g, byte 0xFF, word 0xFFFF, DWord
537 * 0xFFFFFFFF) is assigned to dst."
539 * but PRMs for earlier generations say
541 * "In dword format, one GRF may store up to 8 results. When the register
542 * is used later as a vector of Booleans, as only LSB at each channel
543 * contains meaning [sic] data, software should make sure all higher bits
544 * are masked out (e.g. by 'and-ing' an [sic] 0x01 constant)."
546 * We select the representation of a true boolean uniform to be ~0, and fix
547 * the results of Gen <= 5 CMP instruction's with -(result & 1).
549 ctx
->Const
.UniformBooleanTrue
= ~0;
551 /* From the gen4 PRM, volume 4 page 127:
553 * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies
554 * the base address of the first element of the surface, computed in
555 * software by adding the surface base address to the byte offset of
556 * the element in the buffer."
558 * However, unaligned accesses are slower, so enforce buffer alignment.
560 ctx
->Const
.UniformBufferOffsetAlignment
= 16;
561 ctx
->Const
.TextureBufferOffsetAlignment
= 16;
562 ctx
->Const
.MaxTextureBufferSize
= 128 * 1024 * 1024;
565 ctx
->Const
.MaxVarying
= 32;
566 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= 128;
567 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= 64;
568 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= 128;
569 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= 128;
572 /* We want the GLSL compiler to emit code that uses condition codes */
573 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
574 ctx
->Const
.ShaderCompilerOptions
[i
] =
575 brw
->intelScreen
->compiler
->glsl_compiler_options
[i
];
578 /* ARB_viewport_array */
579 if (brw
->gen
>= 6 && ctx
->API
== API_OPENGL_CORE
) {
580 ctx
->Const
.MaxViewports
= GEN6_NUM_VIEWPORTS
;
581 ctx
->Const
.ViewportSubpixelBits
= 0;
583 /* Cast to float before negating because MaxViewportWidth is unsigned.
585 ctx
->Const
.ViewportBounds
.Min
= -(float)ctx
->Const
.MaxViewportWidth
;
586 ctx
->Const
.ViewportBounds
.Max
= ctx
->Const
.MaxViewportWidth
;
589 /* ARB_gpu_shader5 */
591 ctx
->Const
.MaxVertexStreams
= MIN2(4, MAX_VERTEX_STREAMS
);
593 /* ARB_framebuffer_no_attachments */
594 ctx
->Const
.MaxFramebufferWidth
= ctx
->Const
.MaxViewportWidth
;
595 ctx
->Const
.MaxFramebufferHeight
= ctx
->Const
.MaxViewportHeight
;
596 ctx
->Const
.MaxFramebufferLayers
= ctx
->Const
.MaxArrayTextureLayers
;
597 ctx
->Const
.MaxFramebufferSamples
= max_samples
;
601 brw_adjust_cs_context_constants(struct brw_context
*brw
)
603 struct gl_context
*ctx
= &brw
->ctx
;
605 /* For ES, we set these constants based on SIMD8.
607 * TODO: Once we can always generate SIMD16, we should update this.
609 * For GL, we assume we can generate a SIMD16 program, but this currently
610 * is not always true. This allows us to run more test cases, and will be
611 * required based on desktop GL compute shader requirements.
613 const int simd_size
= ctx
->API
== API_OPENGL_CORE
? 16 : 8;
615 const uint32_t max_invocations
= simd_size
* brw
->max_cs_threads
;
616 ctx
->Const
.MaxComputeWorkGroupSize
[0] = max_invocations
;
617 ctx
->Const
.MaxComputeWorkGroupSize
[1] = max_invocations
;
618 ctx
->Const
.MaxComputeWorkGroupSize
[2] = max_invocations
;
619 ctx
->Const
.MaxComputeWorkGroupInvocations
= max_invocations
;
623 * Process driconf (drirc) options, setting appropriate context flags.
625 * intelInitExtensions still pokes at optionCache directly, in order to
626 * avoid advertising various extensions. No flags are set, so it makes
627 * sense to continue doing that there.
630 brw_process_driconf_options(struct brw_context
*brw
)
632 struct gl_context
*ctx
= &brw
->ctx
;
634 driOptionCache
*options
= &brw
->optionCache
;
635 driParseConfigFiles(options
, &brw
->intelScreen
->optionCache
,
636 brw
->driContext
->driScreenPriv
->myNum
, "i965");
638 int bo_reuse_mode
= driQueryOptioni(options
, "bo_reuse");
639 switch (bo_reuse_mode
) {
640 case DRI_CONF_BO_REUSE_DISABLED
:
642 case DRI_CONF_BO_REUSE_ALL
:
643 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
647 if (!driQueryOptionb(options
, "hiz")) {
648 brw
->has_hiz
= false;
649 /* On gen6, you can only do separate stencil with HIZ. */
651 brw
->has_separate_stencil
= false;
654 if (driQueryOptionb(options
, "always_flush_batch")) {
655 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
656 brw
->always_flush_batch
= true;
659 if (driQueryOptionb(options
, "always_flush_cache")) {
660 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
661 brw
->always_flush_cache
= true;
664 if (driQueryOptionb(options
, "disable_throttling")) {
665 fprintf(stderr
, "disabling flush throttling\n");
666 brw
->disable_throttling
= true;
669 brw
->precompile
= driQueryOptionb(&brw
->optionCache
, "shader_precompile");
671 ctx
->Const
.ForceGLSLExtensionsWarn
=
672 driQueryOptionb(options
, "force_glsl_extensions_warn");
674 ctx
->Const
.DisableGLSLLineContinuations
=
675 driQueryOptionb(options
, "disable_glsl_line_continuations");
677 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
=
678 driQueryOptionb(options
, "allow_glsl_extension_directive_midshader");
682 brwCreateContext(gl_api api
,
683 const struct gl_config
*mesaVis
,
684 __DRIcontext
*driContextPriv
,
685 unsigned major_version
,
686 unsigned minor_version
,
689 unsigned *dri_ctx_error
,
690 void *sharedContextPrivate
)
692 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
693 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
694 struct intel_screen
*screen
= sPriv
->driverPrivate
;
695 const struct brw_device_info
*devinfo
= screen
->devinfo
;
696 struct dd_function_table functions
;
698 /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel
699 * provides us with context reset notifications.
701 uint32_t allowed_flags
= __DRI_CTX_FLAG_DEBUG
702 | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
;
704 if (screen
->has_context_reset_notification
)
705 allowed_flags
|= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
;
707 if (flags
& ~allowed_flags
) {
708 *dri_ctx_error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
712 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
714 fprintf(stderr
, "%s: failed to alloc context\n", __func__
);
715 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
719 driContextPriv
->driverPrivate
= brw
;
720 brw
->driContext
= driContextPriv
;
721 brw
->intelScreen
= screen
;
722 brw
->bufmgr
= screen
->bufmgr
;
724 brw
->gen
= devinfo
->gen
;
725 brw
->gt
= devinfo
->gt
;
726 brw
->is_g4x
= devinfo
->is_g4x
;
727 brw
->is_baytrail
= devinfo
->is_baytrail
;
728 brw
->is_haswell
= devinfo
->is_haswell
;
729 brw
->is_cherryview
= devinfo
->is_cherryview
;
730 brw
->is_broxton
= devinfo
->is_broxton
;
731 brw
->has_llc
= devinfo
->has_llc
;
732 brw
->has_hiz
= devinfo
->has_hiz_and_separate_stencil
;
733 brw
->has_separate_stencil
= devinfo
->has_hiz_and_separate_stencil
;
734 brw
->has_pln
= devinfo
->has_pln
;
735 brw
->has_compr4
= devinfo
->has_compr4
;
736 brw
->has_surface_tile_offset
= devinfo
->has_surface_tile_offset
;
737 brw
->has_negative_rhw_bug
= devinfo
->has_negative_rhw_bug
;
738 brw
->needs_unlit_centroid_workaround
=
739 devinfo
->needs_unlit_centroid_workaround
;
741 brw
->must_use_separate_stencil
= screen
->hw_must_use_separate_stencil
;
742 brw
->has_swizzling
= screen
->hw_has_swizzling
;
744 brw
->vs
.base
.stage
= MESA_SHADER_VERTEX
;
745 brw
->gs
.base
.stage
= MESA_SHADER_GEOMETRY
;
746 brw
->wm
.base
.stage
= MESA_SHADER_FRAGMENT
;
748 gen8_init_vtable_surface_functions(brw
);
749 brw
->vtbl
.emit_depth_stencil_hiz
= gen8_emit_depth_stencil_hiz
;
750 } else if (brw
->gen
>= 7) {
751 gen7_init_vtable_surface_functions(brw
);
752 brw
->vtbl
.emit_depth_stencil_hiz
= gen7_emit_depth_stencil_hiz
;
753 } else if (brw
->gen
>= 6) {
754 gen6_init_vtable_surface_functions(brw
);
755 brw
->vtbl
.emit_depth_stencil_hiz
= gen6_emit_depth_stencil_hiz
;
757 gen4_init_vtable_surface_functions(brw
);
758 brw
->vtbl
.emit_depth_stencil_hiz
= brw_emit_depth_stencil_hiz
;
761 brw_init_driver_functions(brw
, &functions
);
764 functions
.GetGraphicsResetStatus
= brw_get_graphics_reset_status
;
766 struct gl_context
*ctx
= &brw
->ctx
;
768 if (!_mesa_initialize_context(ctx
, api
, mesaVis
, shareCtx
, &functions
)) {
769 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
770 fprintf(stderr
, "%s: failed to init mesa context\n", __func__
);
771 intelDestroyContext(driContextPriv
);
775 driContextSetFlags(ctx
, flags
);
777 /* Initialize the software rasterizer and helper modules.
779 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
780 * software fallbacks (which we have to support on legacy GL to do weird
781 * glDrawPixels(), glBitmap(), and other functions).
783 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
784 _swrast_CreateContext(ctx
);
787 _vbo_CreateContext(ctx
);
788 if (ctx
->swrast_context
) {
789 _tnl_CreateContext(ctx
);
790 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= _tnl_run_pipeline
;
791 _swsetup_CreateContext(ctx
);
793 /* Configure swrast to match hardware characteristics: */
794 _swrast_allow_pixel_fog(ctx
, false);
795 _swrast_allow_vertex_fog(ctx
, true);
798 _mesa_meta_init(ctx
);
800 brw_process_driconf_options(brw
);
802 if (INTEL_DEBUG
& DEBUG_PERF
)
803 brw
->perf_debug
= true;
805 brw_initialize_context_constants(brw
);
807 ctx
->Const
.ResetStrategy
= notify_reset
808 ? GL_LOSE_CONTEXT_ON_RESET_ARB
: GL_NO_RESET_NOTIFICATION_ARB
;
810 /* Reinitialize the context point state. It depends on ctx->Const values. */
811 _mesa_init_point(ctx
);
815 intel_batchbuffer_init(brw
);
818 /* Create a new hardware context. Using a hardware context means that
819 * our GPU state will be saved/restored on context switch, allowing us
820 * to assume that the GPU is in the same state we left it in.
822 * This is required for transform feedback buffer offsets, query objects,
823 * and also allows us to reduce how much state we have to emit.
825 brw
->hw_ctx
= drm_intel_gem_context_create(brw
->bufmgr
);
828 fprintf(stderr
, "Gen6+ requires Kernel 3.6 or later.\n");
829 intelDestroyContext(driContextPriv
);
834 if (brw_init_pipe_control(brw
, devinfo
)) {
835 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
836 intelDestroyContext(driContextPriv
);
842 intelInitExtensions(ctx
);
844 brw_init_surface_formats(brw
);
846 brw
->max_vs_threads
= devinfo
->max_vs_threads
;
847 brw
->max_hs_threads
= devinfo
->max_hs_threads
;
848 brw
->max_ds_threads
= devinfo
->max_ds_threads
;
849 brw
->max_gs_threads
= devinfo
->max_gs_threads
;
850 brw
->max_wm_threads
= devinfo
->max_wm_threads
;
851 brw
->max_cs_threads
= devinfo
->max_cs_threads
;
852 brw
->urb
.size
= devinfo
->urb
.size
;
853 brw
->urb
.min_vs_entries
= devinfo
->urb
.min_vs_entries
;
854 brw
->urb
.max_vs_entries
= devinfo
->urb
.max_vs_entries
;
855 brw
->urb
.max_hs_entries
= devinfo
->urb
.max_hs_entries
;
856 brw
->urb
.max_ds_entries
= devinfo
->urb
.max_ds_entries
;
857 brw
->urb
.max_gs_entries
= devinfo
->urb
.max_gs_entries
;
859 brw_adjust_cs_context_constants(brw
);
861 /* Estimate the size of the mappable aperture into the GTT. There's an
862 * ioctl to get the whole GTT size, but not one to get the mappable subset.
863 * It turns out it's basically always 256MB, though some ancient hardware
866 uint32_t gtt_size
= 256 * 1024 * 1024;
868 /* We don't want to map two objects such that a memcpy between them would
869 * just fault one mapping in and then the other over and over forever. So
870 * we would need to divide the GTT size by 2. Additionally, some GTT is
871 * taken up by things like the framebuffer and the ringbuffer and such, so
872 * be more conservative.
874 brw
->max_gtt_map_object_size
= gtt_size
/ 4;
877 brw
->urb
.gs_present
= false;
879 brw
->prim_restart
.in_progress
= false;
880 brw
->prim_restart
.enable_cut_index
= false;
881 brw
->gs
.enabled
= false;
882 brw
->sf
.viewport_transform_enable
= true;
884 brw
->predicate
.state
= BRW_PREDICATE_STATE_RENDER
;
886 brw
->use_resource_streamer
= screen
->has_resource_streamer
&&
887 (brw_env_var_as_boolean("INTEL_USE_HW_BT", false) ||
888 brw_env_var_as_boolean("INTEL_USE_GATHER", false));
890 ctx
->VertexProgram
._MaintainTnlProgram
= true;
891 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
893 brw_draw_init( brw
);
895 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0) {
896 /* Turn on some extra GL_ARB_debug_output generation. */
897 brw
->perf_debug
= true;
900 if ((flags
& __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
) != 0)
901 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
903 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
904 brw_init_shader_time(brw
);
906 _mesa_compute_version(ctx
);
908 _mesa_initialize_dispatch_tables(ctx
);
909 _mesa_initialize_vbo_vtxfmt(ctx
);
911 if (ctx
->Extensions
.AMD_performance_monitor
) {
912 brw_init_performance_monitors(brw
);
915 vbo_use_buffer_objects(ctx
);
916 vbo_always_unmap_buffers(ctx
);
922 intelDestroyContext(__DRIcontext
* driContextPriv
)
924 struct brw_context
*brw
=
925 (struct brw_context
*) driContextPriv
->driverPrivate
;
926 struct gl_context
*ctx
= &brw
->ctx
;
928 /* Dump a final BMP in case the application doesn't call SwapBuffers */
929 if (INTEL_DEBUG
& DEBUG_AUB
) {
930 intel_batchbuffer_flush(brw
);
931 aub_dump_bmp(&brw
->ctx
);
934 _mesa_meta_free(&brw
->ctx
);
935 brw_meta_fast_clear_free(brw
);
937 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
938 /* Force a report. */
939 brw
->shader_time
.report_time
= 0;
941 brw_collect_and_report_shader_time(brw
);
942 brw_destroy_shader_time(brw
);
945 brw_destroy_state(brw
);
946 brw_draw_destroy(brw
);
948 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
949 if (brw
->vs
.base
.scratch_bo
)
950 drm_intel_bo_unreference(brw
->vs
.base
.scratch_bo
);
951 if (brw
->gs
.base
.scratch_bo
)
952 drm_intel_bo_unreference(brw
->gs
.base
.scratch_bo
);
953 if (brw
->wm
.base
.scratch_bo
)
954 drm_intel_bo_unreference(brw
->wm
.base
.scratch_bo
);
956 gen7_reset_hw_bt_pool_offsets(brw
);
957 drm_intel_bo_unreference(brw
->hw_bt_pool
.bo
);
958 brw
->hw_bt_pool
.bo
= NULL
;
960 drm_intel_gem_context_destroy(brw
->hw_ctx
);
962 if (ctx
->swrast_context
) {
963 _swsetup_DestroyContext(&brw
->ctx
);
964 _tnl_DestroyContext(&brw
->ctx
);
966 _vbo_DestroyContext(&brw
->ctx
);
968 if (ctx
->swrast_context
)
969 _swrast_DestroyContext(&brw
->ctx
);
971 brw_fini_pipe_control(brw
);
972 intel_batchbuffer_free(brw
);
974 drm_intel_bo_unreference(brw
->throttle_batch
[1]);
975 drm_intel_bo_unreference(brw
->throttle_batch
[0]);
976 brw
->throttle_batch
[1] = NULL
;
977 brw
->throttle_batch
[0] = NULL
;
979 driDestroyOptionCache(&brw
->optionCache
);
981 /* free the Mesa context */
982 _mesa_free_context_data(&brw
->ctx
);
985 driContextPriv
->driverPrivate
= NULL
;
989 intelUnbindContext(__DRIcontext
* driContextPriv
)
991 /* Unset current context and dispath table */
992 _mesa_make_current(NULL
, NULL
, NULL
);
998 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
999 * on window system framebuffers.
1001 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
1002 * your renderbuffer can do sRGB encode, and you can flip a switch that does
1003 * sRGB encode if the renderbuffer can handle it. You can ask specifically
1004 * for a visual where you're guaranteed to be capable, but it turns out that
1005 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
1006 * incapable ones, because there's no difference between the two in resources
1007 * used. Applications thus get built that accidentally rely on the default
1008 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
1011 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
1012 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
1013 * So they removed the enable knob and made it "if the renderbuffer is sRGB
1014 * capable, do sRGB encode". Then, for your window system renderbuffers, you
1015 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
1016 * and get no sRGB encode (assuming that both kinds of visual are available).
1017 * Thus our choice to support sRGB by default on our visuals for desktop would
1018 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
1020 * Unfortunately, renderbuffer setup happens before a context is created. So
1021 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
1022 * context (without an sRGB visual, though we don't have sRGB visuals exposed
1023 * yet), we go turn that back off before anyone finds out.
1026 intel_gles3_srgb_workaround(struct brw_context
*brw
,
1027 struct gl_framebuffer
*fb
)
1029 struct gl_context
*ctx
= &brw
->ctx
;
1031 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
1034 /* Some day when we support the sRGB capable bit on visuals available for
1035 * GLES, we'll need to respect that and not disable things here.
1037 fb
->Visual
.sRGBCapable
= false;
1038 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
1039 if (fb
->Attachment
[i
].Renderbuffer
&&
1040 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_B8G8R8A8_SRGB
) {
1041 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_B8G8R8A8_UNORM
;
1047 intelMakeCurrent(__DRIcontext
* driContextPriv
,
1048 __DRIdrawable
* driDrawPriv
,
1049 __DRIdrawable
* driReadPriv
)
1051 struct brw_context
*brw
;
1052 GET_CURRENT_CONTEXT(curCtx
);
1055 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
1059 /* According to the glXMakeCurrent() man page: "Pending commands to
1060 * the previous context, if any, are flushed before it is released."
1061 * But only flush if we're actually changing contexts.
1063 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
1064 _mesa_flush(curCtx
);
1067 if (driContextPriv
) {
1068 struct gl_context
*ctx
= &brw
->ctx
;
1069 struct gl_framebuffer
*fb
, *readFb
;
1071 if (driDrawPriv
== NULL
) {
1072 fb
= _mesa_get_incomplete_framebuffer();
1074 fb
= driDrawPriv
->driverPrivate
;
1075 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
1078 if (driReadPriv
== NULL
) {
1079 readFb
= _mesa_get_incomplete_framebuffer();
1081 readFb
= driReadPriv
->driverPrivate
;
1082 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
1085 /* The sRGB workaround changes the renderbuffer's format. We must change
1086 * the format before the renderbuffer's miptree get's allocated, otherwise
1087 * the formats of the renderbuffer and its miptree will differ.
1089 intel_gles3_srgb_workaround(brw
, fb
);
1090 intel_gles3_srgb_workaround(brw
, readFb
);
1092 /* If the context viewport hasn't been initialized, force a call out to
1093 * the loader to get buffers so we have a drawable size for the initial
1095 if (!brw
->ctx
.ViewportInitialized
)
1096 intel_prepare_render(brw
);
1098 _mesa_make_current(ctx
, fb
, readFb
);
1100 _mesa_make_current(NULL
, NULL
, NULL
);
1107 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
1108 __DRIdrawable
*drawable
)
1111 /* MSAA and fast color clear are not supported, so don't waste time
1112 * checking whether a resolve is needed.
1117 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1118 struct intel_renderbuffer
*rb
;
1120 /* Usually, only the back buffer will need to be downsampled. However,
1121 * the front buffer will also need it if the user has rendered into it.
1123 static const gl_buffer_index buffers
[2] = {
1128 for (int i
= 0; i
< 2; ++i
) {
1129 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
1130 if (rb
== NULL
|| rb
->mt
== NULL
)
1132 if (rb
->mt
->num_samples
<= 1)
1133 intel_miptree_resolve_color(brw
, rb
->mt
);
1135 intel_renderbuffer_downsample(brw
, rb
);
1140 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1142 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1146 intel_query_dri2_buffers(struct brw_context
*brw
,
1147 __DRIdrawable
*drawable
,
1148 __DRIbuffer
**buffers
,
1152 intel_process_dri2_buffer(struct brw_context
*brw
,
1153 __DRIdrawable
*drawable
,
1154 __DRIbuffer
*buffer
,
1155 struct intel_renderbuffer
*rb
,
1156 const char *buffer_name
);
1159 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1162 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1164 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1165 struct intel_renderbuffer
*rb
;
1166 __DRIbuffer
*buffers
= NULL
;
1168 const char *region_name
;
1170 /* Set this up front, so that in case our buffers get invalidated
1171 * while we're getting new buffers, we don't clobber the stamp and
1172 * thus ignore the invalidate. */
1173 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1175 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1176 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1178 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1180 if (buffers
== NULL
)
1183 for (i
= 0; i
< count
; i
++) {
1184 switch (buffers
[i
].attachment
) {
1185 case __DRI_BUFFER_FRONT_LEFT
:
1186 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1187 region_name
= "dri2 front buffer";
1190 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1191 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1192 region_name
= "dri2 fake front buffer";
1195 case __DRI_BUFFER_BACK_LEFT
:
1196 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1197 region_name
= "dri2 back buffer";
1200 case __DRI_BUFFER_DEPTH
:
1201 case __DRI_BUFFER_HIZ
:
1202 case __DRI_BUFFER_DEPTH_STENCIL
:
1203 case __DRI_BUFFER_STENCIL
:
1204 case __DRI_BUFFER_ACCUM
:
1207 "unhandled buffer attach event, attachment type %d\n",
1208 buffers
[i
].attachment
);
1212 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1218 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1220 struct brw_context
*brw
= context
->driverPrivate
;
1221 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1223 /* Set this up front, so that in case our buffers get invalidated
1224 * while we're getting new buffers, we don't clobber the stamp and
1225 * thus ignore the invalidate. */
1226 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1228 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1229 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1231 if (screen
->image
.loader
)
1232 intel_update_image_buffers(brw
, drawable
);
1234 intel_update_dri2_buffers(brw
, drawable
);
1236 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1240 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1241 * state is required.
1244 intel_prepare_render(struct brw_context
*brw
)
1246 struct gl_context
*ctx
= &brw
->ctx
;
1247 __DRIcontext
*driContext
= brw
->driContext
;
1248 __DRIdrawable
*drawable
;
1250 drawable
= driContext
->driDrawablePriv
;
1251 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1252 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1253 intel_update_renderbuffers(driContext
, drawable
);
1254 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1257 drawable
= driContext
->driReadablePriv
;
1258 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1259 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1260 intel_update_renderbuffers(driContext
, drawable
);
1261 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1264 /* If we're currently rendering to the front buffer, the rendering
1265 * that will happen next will probably dirty the front buffer. So
1266 * mark it as dirty here.
1268 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
1269 brw
->front_buffer_dirty
= true;
1273 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1275 * To determine which DRI buffers to request, examine the renderbuffers
1276 * attached to the drawable's framebuffer. Then request the buffers with
1277 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1279 * This is called from intel_update_renderbuffers().
1281 * \param drawable Drawable whose buffers are queried.
1282 * \param buffers [out] List of buffers returned by DRI2 query.
1283 * \param buffer_count [out] Number of buffers returned.
1285 * \see intel_update_renderbuffers()
1286 * \see DRI2GetBuffers()
1287 * \see DRI2GetBuffersWithFormat()
1290 intel_query_dri2_buffers(struct brw_context
*brw
,
1291 __DRIdrawable
*drawable
,
1292 __DRIbuffer
**buffers
,
1295 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1296 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1298 unsigned attachments
[8];
1300 struct intel_renderbuffer
*front_rb
;
1301 struct intel_renderbuffer
*back_rb
;
1303 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1304 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1306 memset(attachments
, 0, sizeof(attachments
));
1307 if ((brw_is_front_buffer_drawing(fb
) ||
1308 brw_is_front_buffer_reading(fb
) ||
1309 !back_rb
) && front_rb
) {
1310 /* If a fake front buffer is in use, then querying for
1311 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1312 * the real front buffer to the fake front buffer. So before doing the
1313 * query, we need to make sure all the pending drawing has landed in the
1314 * real front buffer.
1316 intel_batchbuffer_flush(brw
);
1317 intel_flush_front(&brw
->ctx
);
1319 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1320 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1321 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1322 /* We have pending front buffer rendering, but we aren't querying for a
1323 * front buffer. If the front buffer we have is a fake front buffer,
1324 * the X server is going to throw it away when it processes the query.
1325 * So before doing the query, make sure all the pending drawing has
1326 * landed in the real front buffer.
1328 intel_batchbuffer_flush(brw
);
1329 intel_flush_front(&brw
->ctx
);
1333 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1334 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1337 assert(i
<= ARRAY_SIZE(attachments
));
1339 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1344 drawable
->loaderPrivate
);
1348 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1350 * This is called from intel_update_renderbuffers().
1353 * DRI buffers whose attachment point is DRI2BufferStencil or
1354 * DRI2BufferDepthStencil are handled as special cases.
1356 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1357 * that is passed to drm_intel_bo_gem_create_from_name().
1359 * \see intel_update_renderbuffers()
1362 intel_process_dri2_buffer(struct brw_context
*brw
,
1363 __DRIdrawable
*drawable
,
1364 __DRIbuffer
*buffer
,
1365 struct intel_renderbuffer
*rb
,
1366 const char *buffer_name
)
1368 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1374 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1376 /* We try to avoid closing and reopening the same BO name, because the first
1377 * use of a mapping of the buffer involves a bunch of page faulting which is
1378 * moderately expensive.
1380 struct intel_mipmap_tree
*last_mt
;
1381 if (num_samples
== 0)
1384 last_mt
= rb
->singlesample_mt
;
1386 uint32_t old_name
= 0;
1388 /* The bo already has a name because the miptree was created by a
1389 * previous call to intel_process_dri2_buffer(). If a bo already has a
1390 * name, then drm_intel_bo_flink() is a low-cost getter. It does not
1391 * create a new name.
1393 drm_intel_bo_flink(last_mt
->bo
, &old_name
);
1396 if (old_name
== buffer
->name
)
1399 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1401 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1402 buffer
->name
, buffer
->attachment
,
1403 buffer
->cpp
, buffer
->pitch
);
1406 intel_miptree_release(&rb
->mt
);
1407 bo
= drm_intel_bo_gem_create_from_name(brw
->bufmgr
, buffer_name
,
1411 "Failed to open BO for returned DRI2 buffer "
1412 "(%dx%d, %s, named %d).\n"
1413 "This is likely a bug in the X Server that will lead to a "
1415 drawable
->w
, drawable
->h
, buffer_name
, buffer
->name
);
1419 intel_update_winsys_renderbuffer_miptree(brw
, rb
, bo
,
1420 drawable
->w
, drawable
->h
,
1423 if (brw_is_front_buffer_drawing(fb
) &&
1424 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1425 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1426 rb
->Base
.Base
.NumSamples
> 1) {
1427 intel_renderbuffer_upsample(brw
, rb
);
1432 drm_intel_bo_unreference(bo
);
1436 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1438 * To determine which DRI buffers to request, examine the renderbuffers
1439 * attached to the drawable's framebuffer. Then request the buffers from
1442 * This is called from intel_update_renderbuffers().
1444 * \param drawable Drawable whose buffers are queried.
1445 * \param buffers [out] List of buffers returned by DRI2 query.
1446 * \param buffer_count [out] Number of buffers returned.
1448 * \see intel_update_renderbuffers()
1452 intel_update_image_buffer(struct brw_context
*intel
,
1453 __DRIdrawable
*drawable
,
1454 struct intel_renderbuffer
*rb
,
1456 enum __DRIimageBufferMask buffer_type
)
1458 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1460 if (!rb
|| !buffer
->bo
)
1463 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1465 /* Check and see if we're already bound to the right
1468 struct intel_mipmap_tree
*last_mt
;
1469 if (num_samples
== 0)
1472 last_mt
= rb
->singlesample_mt
;
1474 if (last_mt
&& last_mt
->bo
== buffer
->bo
)
1477 intel_update_winsys_renderbuffer_miptree(intel
, rb
, buffer
->bo
,
1478 buffer
->width
, buffer
->height
,
1481 if (brw_is_front_buffer_drawing(fb
) &&
1482 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1483 rb
->Base
.Base
.NumSamples
> 1) {
1484 intel_renderbuffer_upsample(intel
, rb
);
1489 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1491 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1492 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1493 struct intel_renderbuffer
*front_rb
;
1494 struct intel_renderbuffer
*back_rb
;
1495 struct __DRIimageList images
;
1496 unsigned int format
;
1497 uint32_t buffer_mask
= 0;
1499 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1500 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1503 format
= intel_rb_format(back_rb
);
1505 format
= intel_rb_format(front_rb
);
1509 if (front_rb
&& (brw_is_front_buffer_drawing(fb
) ||
1510 brw_is_front_buffer_reading(fb
) || !back_rb
)) {
1511 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1515 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1517 (*screen
->image
.loader
->getBuffers
) (drawable
,
1518 driGLFormatToImageFormat(format
),
1519 &drawable
->dri2
.stamp
,
1520 drawable
->loaderPrivate
,
1524 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1525 drawable
->w
= images
.front
->width
;
1526 drawable
->h
= images
.front
->height
;
1527 intel_update_image_buffer(brw
,
1531 __DRI_IMAGE_BUFFER_FRONT
);
1533 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1534 drawable
->w
= images
.back
->width
;
1535 drawable
->h
= images
.back
->height
;
1536 intel_update_image_buffer(brw
,
1540 __DRI_IMAGE_BUFFER_BACK
);