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 brw
->optionCache
.info
!= NULL
?
394 driQueryOptioni(&brw
->optionCache
, "clamp_max_samples") : -1;
396 if (clamp_max_samples
< 0) {
397 max_samples
= msaa_modes
[0];
399 /* Select the largest supported MSAA mode that does not exceed
403 for (int i
= 0; msaa_modes
[i
] != 0; ++i
) {
404 if (msaa_modes
[i
] <= clamp_max_samples
) {
405 max_samples
= msaa_modes
[i
];
411 ctx
->Const
.MaxSamples
= max_samples
;
412 ctx
->Const
.MaxColorTextureSamples
= max_samples
;
413 ctx
->Const
.MaxDepthTextureSamples
= max_samples
;
414 ctx
->Const
.MaxIntegerSamples
= max_samples
;
416 /* gen6_set_sample_maps() sets SampleMap{2,4,8}x variables which are used
417 * to map indices of rectangular grid to sample numbers within a pixel.
418 * These variables are used by GL_EXT_framebuffer_multisample_blit_scaled
419 * extension implementation. For more details see the comment above
420 * gen6_set_sample_maps() definition.
422 gen6_set_sample_maps(ctx
);
425 ctx
->Const
.MaxProgramTextureGatherComponents
= 4;
426 else if (brw
->gen
== 6)
427 ctx
->Const
.MaxProgramTextureGatherComponents
= 1;
429 ctx
->Const
.MinLineWidth
= 1.0;
430 ctx
->Const
.MinLineWidthAA
= 1.0;
432 ctx
->Const
.MaxLineWidth
= 7.375;
433 ctx
->Const
.MaxLineWidthAA
= 7.375;
434 ctx
->Const
.LineWidthGranularity
= 0.125;
436 ctx
->Const
.MaxLineWidth
= 7.0;
437 ctx
->Const
.MaxLineWidthAA
= 7.0;
438 ctx
->Const
.LineWidthGranularity
= 0.5;
441 /* For non-antialiased lines, we have to round the line width to the
442 * nearest whole number. Make sure that we don't advertise a line
443 * width that, when rounded, will be beyond the actual hardware
446 assert(roundf(ctx
->Const
.MaxLineWidth
) <= ctx
->Const
.MaxLineWidth
);
448 ctx
->Const
.MinPointSize
= 1.0;
449 ctx
->Const
.MinPointSizeAA
= 1.0;
450 ctx
->Const
.MaxPointSize
= 255.0;
451 ctx
->Const
.MaxPointSizeAA
= 255.0;
452 ctx
->Const
.PointSizeGranularity
= 1.0;
454 if (brw
->gen
>= 5 || brw
->is_g4x
)
455 ctx
->Const
.MaxClipPlanes
= 8;
457 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeInstructions
= 16 * 1024;
458 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAluInstructions
= 0;
459 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexInstructions
= 0;
460 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexIndirections
= 0;
461 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAluInstructions
= 0;
462 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexInstructions
= 0;
463 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexIndirections
= 0;
464 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAttribs
= 16;
465 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTemps
= 256;
466 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAddressRegs
= 1;
467 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
= 1024;
468 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
=
469 MIN2(ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
,
470 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
);
472 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeInstructions
= 1024;
473 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAluInstructions
= 1024;
474 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexInstructions
= 1024;
475 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexIndirections
= 1024;
476 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAttribs
= 12;
477 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTemps
= 256;
478 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAddressRegs
= 0;
479 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
= 1024;
480 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
=
481 MIN2(ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
,
482 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
);
484 /* Fragment shaders use real, 32-bit twos-complement integers for all
487 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMin
= 31;
488 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMax
= 30;
489 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.Precision
= 0;
490 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
491 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
493 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMin
= 31;
494 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.RangeMax
= 30;
495 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
.Precision
= 0;
496 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
497 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].LowInt
;
500 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
501 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
502 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
503 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
504 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
= BRW_MAX_ABO
;
505 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
= BRW_MAX_ABO
;
506 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
= BRW_MAX_ABO
;
507 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
= BRW_MAX_ABO
;
508 ctx
->Const
.MaxCombinedAtomicBuffers
= 3 * BRW_MAX_ABO
;
511 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
512 * but we're not sure how it's actually done for vertex order,
513 * that affect provoking vertex decision. Always use last vertex
514 * convention for quad primitive which works as expected for now.
517 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
519 ctx
->Const
.NativeIntegers
= true;
520 ctx
->Const
.VertexID_is_zero_based
= true;
522 /* Regarding the CMP instruction, the Ivybridge PRM says:
524 * "For each enabled channel 0b or 1b is assigned to the appropriate flag
525 * bit and 0/all zeros or all ones (e.g, byte 0xFF, word 0xFFFF, DWord
526 * 0xFFFFFFFF) is assigned to dst."
528 * but PRMs for earlier generations say
530 * "In dword format, one GRF may store up to 8 results. When the register
531 * is used later as a vector of Booleans, as only LSB at each channel
532 * contains meaning [sic] data, software should make sure all higher bits
533 * are masked out (e.g. by 'and-ing' an [sic] 0x01 constant)."
535 * We select the representation of a true boolean uniform to be ~0, and fix
536 * the results of Gen <= 5 CMP instruction's with -(result & 1).
538 ctx
->Const
.UniformBooleanTrue
= ~0;
540 /* From the gen4 PRM, volume 4 page 127:
542 * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies
543 * the base address of the first element of the surface, computed in
544 * software by adding the surface base address to the byte offset of
545 * the element in the buffer."
547 * However, unaligned accesses are slower, so enforce buffer alignment.
549 ctx
->Const
.UniformBufferOffsetAlignment
= 16;
550 ctx
->Const
.TextureBufferOffsetAlignment
= 16;
551 ctx
->Const
.MaxTextureBufferSize
= 128 * 1024 * 1024;
554 ctx
->Const
.MaxVarying
= 32;
555 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= 128;
556 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= 64;
557 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= 128;
558 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= 128;
561 /* We want the GLSL compiler to emit code that uses condition codes */
562 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
563 ctx
->Const
.ShaderCompilerOptions
[i
] =
564 brw
->intelScreen
->compiler
->glsl_compiler_options
[i
];
567 /* ARB_viewport_array */
568 if (brw
->gen
>= 6 && ctx
->API
== API_OPENGL_CORE
) {
569 ctx
->Const
.MaxViewports
= GEN6_NUM_VIEWPORTS
;
570 ctx
->Const
.ViewportSubpixelBits
= 0;
572 /* Cast to float before negating because MaxViewportWidth is unsigned.
574 ctx
->Const
.ViewportBounds
.Min
= -(float)ctx
->Const
.MaxViewportWidth
;
575 ctx
->Const
.ViewportBounds
.Max
= ctx
->Const
.MaxViewportWidth
;
578 /* ARB_gpu_shader5 */
580 ctx
->Const
.MaxVertexStreams
= MIN2(4, MAX_VERTEX_STREAMS
);
582 /* ARB_framebuffer_no_attachments */
583 ctx
->Const
.MaxFramebufferWidth
= ctx
->Const
.MaxViewportWidth
;
584 ctx
->Const
.MaxFramebufferHeight
= ctx
->Const
.MaxViewportHeight
;
585 ctx
->Const
.MaxFramebufferLayers
= ctx
->Const
.MaxArrayTextureLayers
;
586 ctx
->Const
.MaxFramebufferSamples
= max_samples
;
590 brw_adjust_cs_context_constants(struct brw_context
*brw
)
592 struct gl_context
*ctx
= &brw
->ctx
;
594 /* For ES, we set these constants based on SIMD8.
596 * TODO: Once we can always generate SIMD16, we should update this.
598 * For GL, we assume we can generate a SIMD16 program, but this currently
599 * is not always true. This allows us to run more test cases, and will be
600 * required based on desktop GL compute shader requirements.
602 const int simd_size
= ctx
->API
== API_OPENGL_CORE
? 16 : 8;
604 const uint32_t max_invocations
= simd_size
* brw
->max_cs_threads
;
605 ctx
->Const
.MaxComputeWorkGroupSize
[0] = max_invocations
;
606 ctx
->Const
.MaxComputeWorkGroupSize
[1] = max_invocations
;
607 ctx
->Const
.MaxComputeWorkGroupSize
[2] = max_invocations
;
608 ctx
->Const
.MaxComputeWorkGroupInvocations
= max_invocations
;
612 * Process driconf (drirc) options, setting appropriate context flags.
614 * intelInitExtensions still pokes at optionCache directly, in order to
615 * avoid advertising various extensions. No flags are set, so it makes
616 * sense to continue doing that there.
619 brw_process_driconf_options(struct brw_context
*brw
)
621 struct gl_context
*ctx
= &brw
->ctx
;
623 driOptionCache
*options
= &brw
->optionCache
;
624 driParseConfigFiles(options
, &brw
->intelScreen
->optionCache
,
625 brw
->driContext
->driScreenPriv
->myNum
, "i965");
627 int bo_reuse_mode
= driQueryOptioni(options
, "bo_reuse");
628 switch (bo_reuse_mode
) {
629 case DRI_CONF_BO_REUSE_DISABLED
:
631 case DRI_CONF_BO_REUSE_ALL
:
632 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
636 if (!driQueryOptionb(options
, "hiz")) {
637 brw
->has_hiz
= false;
638 /* On gen6, you can only do separate stencil with HIZ. */
640 brw
->has_separate_stencil
= false;
643 if (driQueryOptionb(options
, "always_flush_batch")) {
644 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
645 brw
->always_flush_batch
= true;
648 if (driQueryOptionb(options
, "always_flush_cache")) {
649 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
650 brw
->always_flush_cache
= true;
653 if (driQueryOptionb(options
, "disable_throttling")) {
654 fprintf(stderr
, "disabling flush throttling\n");
655 brw
->disable_throttling
= true;
658 brw
->precompile
= driQueryOptionb(&brw
->optionCache
, "shader_precompile");
660 ctx
->Const
.ForceGLSLExtensionsWarn
=
661 driQueryOptionb(options
, "force_glsl_extensions_warn");
663 ctx
->Const
.DisableGLSLLineContinuations
=
664 driQueryOptionb(options
, "disable_glsl_line_continuations");
666 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
=
667 driQueryOptionb(options
, "allow_glsl_extension_directive_midshader");
671 brwCreateContext(gl_api api
,
672 const struct gl_config
*mesaVis
,
673 __DRIcontext
*driContextPriv
,
674 unsigned major_version
,
675 unsigned minor_version
,
678 unsigned *dri_ctx_error
,
679 void *sharedContextPrivate
)
681 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
682 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
683 struct intel_screen
*screen
= sPriv
->driverPrivate
;
684 const struct brw_device_info
*devinfo
= screen
->devinfo
;
685 struct dd_function_table functions
;
687 /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel
688 * provides us with context reset notifications.
690 uint32_t allowed_flags
= __DRI_CTX_FLAG_DEBUG
691 | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
;
693 if (screen
->has_context_reset_notification
)
694 allowed_flags
|= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
;
696 if (flags
& ~allowed_flags
) {
697 *dri_ctx_error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
701 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
703 fprintf(stderr
, "%s: failed to alloc context\n", __func__
);
704 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
708 driContextPriv
->driverPrivate
= brw
;
709 brw
->driContext
= driContextPriv
;
710 brw
->intelScreen
= screen
;
711 brw
->bufmgr
= screen
->bufmgr
;
713 brw
->gen
= devinfo
->gen
;
714 brw
->gt
= devinfo
->gt
;
715 brw
->is_g4x
= devinfo
->is_g4x
;
716 brw
->is_baytrail
= devinfo
->is_baytrail
;
717 brw
->is_haswell
= devinfo
->is_haswell
;
718 brw
->is_cherryview
= devinfo
->is_cherryview
;
719 brw
->has_llc
= devinfo
->has_llc
;
720 brw
->has_hiz
= devinfo
->has_hiz_and_separate_stencil
;
721 brw
->has_separate_stencil
= devinfo
->has_hiz_and_separate_stencil
;
722 brw
->has_pln
= devinfo
->has_pln
;
723 brw
->has_compr4
= devinfo
->has_compr4
;
724 brw
->has_surface_tile_offset
= devinfo
->has_surface_tile_offset
;
725 brw
->has_negative_rhw_bug
= devinfo
->has_negative_rhw_bug
;
726 brw
->needs_unlit_centroid_workaround
=
727 devinfo
->needs_unlit_centroid_workaround
;
729 brw
->must_use_separate_stencil
= screen
->hw_must_use_separate_stencil
;
730 brw
->has_swizzling
= screen
->hw_has_swizzling
;
732 brw
->vs
.base
.stage
= MESA_SHADER_VERTEX
;
733 brw
->gs
.base
.stage
= MESA_SHADER_GEOMETRY
;
734 brw
->wm
.base
.stage
= MESA_SHADER_FRAGMENT
;
736 gen8_init_vtable_surface_functions(brw
);
737 brw
->vtbl
.emit_depth_stencil_hiz
= gen8_emit_depth_stencil_hiz
;
738 } else if (brw
->gen
>= 7) {
739 gen7_init_vtable_surface_functions(brw
);
740 brw
->vtbl
.emit_depth_stencil_hiz
= gen7_emit_depth_stencil_hiz
;
741 } else if (brw
->gen
>= 6) {
742 gen6_init_vtable_surface_functions(brw
);
743 brw
->vtbl
.emit_depth_stencil_hiz
= gen6_emit_depth_stencil_hiz
;
745 gen4_init_vtable_surface_functions(brw
);
746 brw
->vtbl
.emit_depth_stencil_hiz
= brw_emit_depth_stencil_hiz
;
749 brw_init_driver_functions(brw
, &functions
);
752 functions
.GetGraphicsResetStatus
= brw_get_graphics_reset_status
;
754 struct gl_context
*ctx
= &brw
->ctx
;
756 if (!_mesa_initialize_context(ctx
, api
, mesaVis
, shareCtx
, &functions
)) {
757 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
758 fprintf(stderr
, "%s: failed to init mesa context\n", __func__
);
759 intelDestroyContext(driContextPriv
);
763 driContextSetFlags(ctx
, flags
);
765 /* Initialize the software rasterizer and helper modules.
767 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
768 * software fallbacks (which we have to support on legacy GL to do weird
769 * glDrawPixels(), glBitmap(), and other functions).
771 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
772 _swrast_CreateContext(ctx
);
775 _vbo_CreateContext(ctx
);
776 if (ctx
->swrast_context
) {
777 _tnl_CreateContext(ctx
);
778 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= _tnl_run_pipeline
;
779 _swsetup_CreateContext(ctx
);
781 /* Configure swrast to match hardware characteristics: */
782 _swrast_allow_pixel_fog(ctx
, false);
783 _swrast_allow_vertex_fog(ctx
, true);
786 _mesa_meta_init(ctx
);
788 brw_process_driconf_options(brw
);
790 if (INTEL_DEBUG
& DEBUG_PERF
)
791 brw
->perf_debug
= true;
793 brw_initialize_context_constants(brw
);
795 ctx
->Const
.ResetStrategy
= notify_reset
796 ? GL_LOSE_CONTEXT_ON_RESET_ARB
: GL_NO_RESET_NOTIFICATION_ARB
;
798 /* Reinitialize the context point state. It depends on ctx->Const values. */
799 _mesa_init_point(ctx
);
803 intel_batchbuffer_init(brw
);
807 /* Create a new hardware context. Using a hardware context means that
808 * our GPU state will be saved/restored on context switch, allowing us
809 * to assume that the GPU is in the same state we left it in.
811 * This is required for transform feedback buffer offsets, query objects,
812 * and also allows us to reduce how much state we have to emit.
814 brw
->hw_ctx
= drm_intel_gem_context_create(brw
->bufmgr
);
817 fprintf(stderr
, "Gen6+ requires Kernel 3.6 or later.\n");
818 intelDestroyContext(driContextPriv
);
826 intelInitExtensions(ctx
);
828 brw_init_surface_formats(brw
);
830 brw
->max_vs_threads
= devinfo
->max_vs_threads
;
831 brw
->max_hs_threads
= devinfo
->max_hs_threads
;
832 brw
->max_ds_threads
= devinfo
->max_ds_threads
;
833 brw
->max_gs_threads
= devinfo
->max_gs_threads
;
834 brw
->max_wm_threads
= devinfo
->max_wm_threads
;
835 brw
->max_cs_threads
= devinfo
->max_cs_threads
;
836 brw
->urb
.size
= devinfo
->urb
.size
;
837 brw
->urb
.min_vs_entries
= devinfo
->urb
.min_vs_entries
;
838 brw
->urb
.max_vs_entries
= devinfo
->urb
.max_vs_entries
;
839 brw
->urb
.max_hs_entries
= devinfo
->urb
.max_hs_entries
;
840 brw
->urb
.max_ds_entries
= devinfo
->urb
.max_ds_entries
;
841 brw
->urb
.max_gs_entries
= devinfo
->urb
.max_gs_entries
;
843 brw_adjust_cs_context_constants(brw
);
845 /* Estimate the size of the mappable aperture into the GTT. There's an
846 * ioctl to get the whole GTT size, but not one to get the mappable subset.
847 * It turns out it's basically always 256MB, though some ancient hardware
850 uint32_t gtt_size
= 256 * 1024 * 1024;
852 /* We don't want to map two objects such that a memcpy between them would
853 * just fault one mapping in and then the other over and over forever. So
854 * we would need to divide the GTT size by 2. Additionally, some GTT is
855 * taken up by things like the framebuffer and the ringbuffer and such, so
856 * be more conservative.
858 brw
->max_gtt_map_object_size
= gtt_size
/ 4;
861 brw
->urb
.gs_present
= false;
863 brw
->prim_restart
.in_progress
= false;
864 brw
->prim_restart
.enable_cut_index
= false;
865 brw
->gs
.enabled
= false;
866 brw
->sf
.viewport_transform_enable
= true;
868 brw
->predicate
.state
= BRW_PREDICATE_STATE_RENDER
;
870 ctx
->VertexProgram
._MaintainTnlProgram
= true;
871 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
873 brw_draw_init( brw
);
875 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0) {
876 /* Turn on some extra GL_ARB_debug_output generation. */
877 brw
->perf_debug
= true;
880 if ((flags
& __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
) != 0)
881 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
883 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
884 brw_init_shader_time(brw
);
886 _mesa_compute_version(ctx
);
889 _mesa_initialize_dispatch_tables(ctx
);
890 _mesa_initialize_vbo_vtxfmt(ctx
);
893 if (ctx
->Extensions
.AMD_performance_monitor
) {
894 brw_init_performance_monitors(brw
);
897 vbo_use_buffer_objects(ctx
);
898 vbo_always_unmap_buffers(ctx
);
904 intelDestroyContext(__DRIcontext
* driContextPriv
)
906 struct brw_context
*brw
=
907 (struct brw_context
*) driContextPriv
->driverPrivate
;
908 struct gl_context
*ctx
= &brw
->ctx
;
910 /* Dump a final BMP in case the application doesn't call SwapBuffers */
911 if (INTEL_DEBUG
& DEBUG_AUB
) {
912 intel_batchbuffer_flush(brw
);
913 aub_dump_bmp(&brw
->ctx
);
916 _mesa_meta_free(&brw
->ctx
);
917 brw_meta_fast_clear_free(brw
);
919 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
920 /* Force a report. */
921 brw
->shader_time
.report_time
= 0;
923 brw_collect_and_report_shader_time(brw
);
924 brw_destroy_shader_time(brw
);
927 brw_destroy_state(brw
);
928 brw_draw_destroy(brw
);
930 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
931 if (brw
->vs
.base
.scratch_bo
)
932 drm_intel_bo_unreference(brw
->vs
.base
.scratch_bo
);
933 if (brw
->gs
.base
.scratch_bo
)
934 drm_intel_bo_unreference(brw
->gs
.base
.scratch_bo
);
935 if (brw
->wm
.base
.scratch_bo
)
936 drm_intel_bo_unreference(brw
->wm
.base
.scratch_bo
);
938 drm_intel_gem_context_destroy(brw
->hw_ctx
);
940 if (ctx
->swrast_context
) {
941 _swsetup_DestroyContext(&brw
->ctx
);
942 _tnl_DestroyContext(&brw
->ctx
);
944 _vbo_DestroyContext(&brw
->ctx
);
946 if (ctx
->swrast_context
)
947 _swrast_DestroyContext(&brw
->ctx
);
949 intel_batchbuffer_free(brw
);
951 drm_intel_bo_unreference(brw
->throttle_batch
[1]);
952 drm_intel_bo_unreference(brw
->throttle_batch
[0]);
953 brw
->throttle_batch
[1] = NULL
;
954 brw
->throttle_batch
[0] = NULL
;
956 driDestroyOptionCache(&brw
->optionCache
);
958 /* free the Mesa context */
959 _mesa_free_context_data(&brw
->ctx
);
962 driContextPriv
->driverPrivate
= NULL
;
966 intelUnbindContext(__DRIcontext
* driContextPriv
)
968 /* Unset current context and dispath table */
969 _mesa_make_current(NULL
, NULL
, NULL
);
975 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
976 * on window system framebuffers.
978 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
979 * your renderbuffer can do sRGB encode, and you can flip a switch that does
980 * sRGB encode if the renderbuffer can handle it. You can ask specifically
981 * for a visual where you're guaranteed to be capable, but it turns out that
982 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
983 * incapable ones, because there's no difference between the two in resources
984 * used. Applications thus get built that accidentally rely on the default
985 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
988 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
989 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
990 * So they removed the enable knob and made it "if the renderbuffer is sRGB
991 * capable, do sRGB encode". Then, for your window system renderbuffers, you
992 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
993 * and get no sRGB encode (assuming that both kinds of visual are available).
994 * Thus our choice to support sRGB by default on our visuals for desktop would
995 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
997 * Unfortunately, renderbuffer setup happens before a context is created. So
998 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
999 * context (without an sRGB visual, though we don't have sRGB visuals exposed
1000 * yet), we go turn that back off before anyone finds out.
1003 intel_gles3_srgb_workaround(struct brw_context
*brw
,
1004 struct gl_framebuffer
*fb
)
1006 struct gl_context
*ctx
= &brw
->ctx
;
1008 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
1011 /* Some day when we support the sRGB capable bit on visuals available for
1012 * GLES, we'll need to respect that and not disable things here.
1014 fb
->Visual
.sRGBCapable
= false;
1015 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
1016 if (fb
->Attachment
[i
].Renderbuffer
&&
1017 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_B8G8R8A8_SRGB
) {
1018 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_B8G8R8A8_UNORM
;
1024 intelMakeCurrent(__DRIcontext
* driContextPriv
,
1025 __DRIdrawable
* driDrawPriv
,
1026 __DRIdrawable
* driReadPriv
)
1028 struct brw_context
*brw
;
1029 GET_CURRENT_CONTEXT(curCtx
);
1032 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
1036 /* According to the glXMakeCurrent() man page: "Pending commands to
1037 * the previous context, if any, are flushed before it is released."
1038 * But only flush if we're actually changing contexts.
1040 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
1041 _mesa_flush(curCtx
);
1044 if (driContextPriv
) {
1045 struct gl_context
*ctx
= &brw
->ctx
;
1046 struct gl_framebuffer
*fb
, *readFb
;
1048 if (driDrawPriv
== NULL
) {
1049 fb
= _mesa_get_incomplete_framebuffer();
1051 fb
= driDrawPriv
->driverPrivate
;
1052 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
1055 if (driReadPriv
== NULL
) {
1056 readFb
= _mesa_get_incomplete_framebuffer();
1058 readFb
= driReadPriv
->driverPrivate
;
1059 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
1062 /* The sRGB workaround changes the renderbuffer's format. We must change
1063 * the format before the renderbuffer's miptree get's allocated, otherwise
1064 * the formats of the renderbuffer and its miptree will differ.
1066 intel_gles3_srgb_workaround(brw
, fb
);
1067 intel_gles3_srgb_workaround(brw
, readFb
);
1069 /* If the context viewport hasn't been initialized, force a call out to
1070 * the loader to get buffers so we have a drawable size for the initial
1072 if (!brw
->ctx
.ViewportInitialized
)
1073 intel_prepare_render(brw
);
1075 _mesa_make_current(ctx
, fb
, readFb
);
1077 _mesa_make_current(NULL
, NULL
, NULL
);
1084 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
1085 __DRIdrawable
*drawable
)
1088 /* MSAA and fast color clear are not supported, so don't waste time
1089 * checking whether a resolve is needed.
1094 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1095 struct intel_renderbuffer
*rb
;
1097 /* Usually, only the back buffer will need to be downsampled. However,
1098 * the front buffer will also need it if the user has rendered into it.
1100 static const gl_buffer_index buffers
[2] = {
1105 for (int i
= 0; i
< 2; ++i
) {
1106 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
1107 if (rb
== NULL
|| rb
->mt
== NULL
)
1109 if (rb
->mt
->num_samples
<= 1)
1110 intel_miptree_resolve_color(brw
, rb
->mt
);
1112 intel_renderbuffer_downsample(brw
, rb
);
1117 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1119 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1123 intel_query_dri2_buffers(struct brw_context
*brw
,
1124 __DRIdrawable
*drawable
,
1125 __DRIbuffer
**buffers
,
1129 intel_process_dri2_buffer(struct brw_context
*brw
,
1130 __DRIdrawable
*drawable
,
1131 __DRIbuffer
*buffer
,
1132 struct intel_renderbuffer
*rb
,
1133 const char *buffer_name
);
1136 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1139 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1141 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1142 struct intel_renderbuffer
*rb
;
1143 __DRIbuffer
*buffers
= NULL
;
1145 const char *region_name
;
1147 /* Set this up front, so that in case our buffers get invalidated
1148 * while we're getting new buffers, we don't clobber the stamp and
1149 * thus ignore the invalidate. */
1150 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1152 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1153 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1155 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1157 if (buffers
== NULL
)
1160 for (i
= 0; i
< count
; i
++) {
1161 switch (buffers
[i
].attachment
) {
1162 case __DRI_BUFFER_FRONT_LEFT
:
1163 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1164 region_name
= "dri2 front buffer";
1167 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1168 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1169 region_name
= "dri2 fake front buffer";
1172 case __DRI_BUFFER_BACK_LEFT
:
1173 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1174 region_name
= "dri2 back buffer";
1177 case __DRI_BUFFER_DEPTH
:
1178 case __DRI_BUFFER_HIZ
:
1179 case __DRI_BUFFER_DEPTH_STENCIL
:
1180 case __DRI_BUFFER_STENCIL
:
1181 case __DRI_BUFFER_ACCUM
:
1184 "unhandled buffer attach event, attachment type %d\n",
1185 buffers
[i
].attachment
);
1189 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1195 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1197 struct brw_context
*brw
= context
->driverPrivate
;
1198 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1200 /* Set this up front, so that in case our buffers get invalidated
1201 * while we're getting new buffers, we don't clobber the stamp and
1202 * thus ignore the invalidate. */
1203 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1205 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1206 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1208 if (screen
->image
.loader
)
1209 intel_update_image_buffers(brw
, drawable
);
1211 intel_update_dri2_buffers(brw
, drawable
);
1213 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1217 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1218 * state is required.
1221 intel_prepare_render(struct brw_context
*brw
)
1223 struct gl_context
*ctx
= &brw
->ctx
;
1224 __DRIcontext
*driContext
= brw
->driContext
;
1225 __DRIdrawable
*drawable
;
1227 drawable
= driContext
->driDrawablePriv
;
1228 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1229 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1230 intel_update_renderbuffers(driContext
, drawable
);
1231 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1234 drawable
= driContext
->driReadablePriv
;
1235 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1236 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1237 intel_update_renderbuffers(driContext
, drawable
);
1238 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1241 /* If we're currently rendering to the front buffer, the rendering
1242 * that will happen next will probably dirty the front buffer. So
1243 * mark it as dirty here.
1245 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
1246 brw
->front_buffer_dirty
= true;
1250 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1252 * To determine which DRI buffers to request, examine the renderbuffers
1253 * attached to the drawable's framebuffer. Then request the buffers with
1254 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1256 * This is called from intel_update_renderbuffers().
1258 * \param drawable Drawable whose buffers are queried.
1259 * \param buffers [out] List of buffers returned by DRI2 query.
1260 * \param buffer_count [out] Number of buffers returned.
1262 * \see intel_update_renderbuffers()
1263 * \see DRI2GetBuffers()
1264 * \see DRI2GetBuffersWithFormat()
1267 intel_query_dri2_buffers(struct brw_context
*brw
,
1268 __DRIdrawable
*drawable
,
1269 __DRIbuffer
**buffers
,
1272 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1273 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1275 unsigned attachments
[8];
1277 struct intel_renderbuffer
*front_rb
;
1278 struct intel_renderbuffer
*back_rb
;
1280 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1281 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1283 memset(attachments
, 0, sizeof(attachments
));
1284 if ((brw_is_front_buffer_drawing(fb
) ||
1285 brw_is_front_buffer_reading(fb
) ||
1286 !back_rb
) && front_rb
) {
1287 /* If a fake front buffer is in use, then querying for
1288 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1289 * the real front buffer to the fake front buffer. So before doing the
1290 * query, we need to make sure all the pending drawing has landed in the
1291 * real front buffer.
1293 intel_batchbuffer_flush(brw
);
1294 intel_flush_front(&brw
->ctx
);
1296 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1297 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1298 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1299 /* We have pending front buffer rendering, but we aren't querying for a
1300 * front buffer. If the front buffer we have is a fake front buffer,
1301 * the X server is going to throw it away when it processes the query.
1302 * So before doing the query, make sure all the pending drawing has
1303 * landed in the real front buffer.
1305 intel_batchbuffer_flush(brw
);
1306 intel_flush_front(&brw
->ctx
);
1310 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1311 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1314 assert(i
<= ARRAY_SIZE(attachments
));
1316 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1321 drawable
->loaderPrivate
);
1325 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1327 * This is called from intel_update_renderbuffers().
1330 * DRI buffers whose attachment point is DRI2BufferStencil or
1331 * DRI2BufferDepthStencil are handled as special cases.
1333 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1334 * that is passed to drm_intel_bo_gem_create_from_name().
1336 * \see intel_update_renderbuffers()
1339 intel_process_dri2_buffer(struct brw_context
*brw
,
1340 __DRIdrawable
*drawable
,
1341 __DRIbuffer
*buffer
,
1342 struct intel_renderbuffer
*rb
,
1343 const char *buffer_name
)
1345 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1351 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1353 /* We try to avoid closing and reopening the same BO name, because the first
1354 * use of a mapping of the buffer involves a bunch of page faulting which is
1355 * moderately expensive.
1357 struct intel_mipmap_tree
*last_mt
;
1358 if (num_samples
== 0)
1361 last_mt
= rb
->singlesample_mt
;
1363 uint32_t old_name
= 0;
1365 /* The bo already has a name because the miptree was created by a
1366 * previous call to intel_process_dri2_buffer(). If a bo already has a
1367 * name, then drm_intel_bo_flink() is a low-cost getter. It does not
1368 * create a new name.
1370 drm_intel_bo_flink(last_mt
->bo
, &old_name
);
1373 if (old_name
== buffer
->name
)
1376 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1378 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1379 buffer
->name
, buffer
->attachment
,
1380 buffer
->cpp
, buffer
->pitch
);
1383 intel_miptree_release(&rb
->mt
);
1384 bo
= drm_intel_bo_gem_create_from_name(brw
->bufmgr
, buffer_name
,
1388 "Failed to open BO for returned DRI2 buffer "
1389 "(%dx%d, %s, named %d).\n"
1390 "This is likely a bug in the X Server that will lead to a "
1392 drawable
->w
, drawable
->h
, buffer_name
, buffer
->name
);
1396 intel_update_winsys_renderbuffer_miptree(brw
, rb
, bo
,
1397 drawable
->w
, drawable
->h
,
1400 if (brw_is_front_buffer_drawing(fb
) &&
1401 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1402 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1403 rb
->Base
.Base
.NumSamples
> 1) {
1404 intel_renderbuffer_upsample(brw
, rb
);
1409 drm_intel_bo_unreference(bo
);
1413 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1415 * To determine which DRI buffers to request, examine the renderbuffers
1416 * attached to the drawable's framebuffer. Then request the buffers from
1419 * This is called from intel_update_renderbuffers().
1421 * \param drawable Drawable whose buffers are queried.
1422 * \param buffers [out] List of buffers returned by DRI2 query.
1423 * \param buffer_count [out] Number of buffers returned.
1425 * \see intel_update_renderbuffers()
1429 intel_update_image_buffer(struct brw_context
*intel
,
1430 __DRIdrawable
*drawable
,
1431 struct intel_renderbuffer
*rb
,
1433 enum __DRIimageBufferMask buffer_type
)
1435 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1437 if (!rb
|| !buffer
->bo
)
1440 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1442 /* Check and see if we're already bound to the right
1445 struct intel_mipmap_tree
*last_mt
;
1446 if (num_samples
== 0)
1449 last_mt
= rb
->singlesample_mt
;
1451 if (last_mt
&& last_mt
->bo
== buffer
->bo
)
1454 intel_update_winsys_renderbuffer_miptree(intel
, rb
, buffer
->bo
,
1455 buffer
->width
, buffer
->height
,
1458 if (brw_is_front_buffer_drawing(fb
) &&
1459 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1460 rb
->Base
.Base
.NumSamples
> 1) {
1461 intel_renderbuffer_upsample(intel
, rb
);
1466 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1468 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1469 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1470 struct intel_renderbuffer
*front_rb
;
1471 struct intel_renderbuffer
*back_rb
;
1472 struct __DRIimageList images
;
1473 unsigned int format
;
1474 uint32_t buffer_mask
= 0;
1476 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1477 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1480 format
= intel_rb_format(back_rb
);
1482 format
= intel_rb_format(front_rb
);
1486 if (front_rb
&& (brw_is_front_buffer_drawing(fb
) ||
1487 brw_is_front_buffer_reading(fb
) || !back_rb
)) {
1488 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1492 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1494 (*screen
->image
.loader
->getBuffers
) (drawable
,
1495 driGLFormatToImageFormat(format
),
1496 &drawable
->dri2
.stamp
,
1497 drawable
->loaderPrivate
,
1501 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1502 drawable
->w
= images
.front
->width
;
1503 drawable
->h
= images
.front
->height
;
1504 intel_update_image_buffer(brw
,
1508 __DRI_IMAGE_BUFFER_FRONT
);
1510 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1511 drawable
->w
= images
.back
->width
;
1512 drawable
->h
= images
.back
->height
;
1513 intel_update_image_buffer(brw
,
1517 __DRI_IMAGE_BUFFER_BACK
);