1 /**************************************************************************
3 * Copyright 2007 VMware, Inc.
4 * Copyright (c) 2008 VMware, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * 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, sub license, 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 portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
29 #include "main/imports.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/version.h"
34 #include "pipe/p_context.h"
35 #include "pipe/p_defines.h"
36 #include "pipe/p_screen.h"
37 #include "util/u_math.h"
39 #include "st_context.h"
41 #include "st_extensions.h"
42 #include "st_format.h"
46 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
47 * avoid evaluating arguments (which are often function calls) more than once.
50 static unsigned _min(unsigned a
, unsigned b
)
52 return (a
< b
) ? a
: b
;
55 static float _maxf(float a
, float b
)
57 return (a
> b
) ? a
: b
;
60 static int _clamp(int a
, int min
, int max
)
72 * Query driver to get implementation limits.
73 * Note that we have to limit/clamp against Mesa's internal limits too.
75 void st_init_limits(struct pipe_screen
*screen
,
76 struct gl_constants
*c
, struct gl_extensions
*extensions
)
80 boolean can_ubo
= TRUE
;
82 bool ssbo_atomic
= true;
85 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
),
89 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_3D_LEVELS
),
90 MAX_3D_TEXTURE_LEVELS
);
92 c
->MaxCubeTextureLevels
93 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS
),
94 MAX_CUBE_TEXTURE_LEVELS
);
97 = _min(1 << (c
->MaxTextureLevels
- 1), MAX_TEXTURE_RECT_SIZE
);
99 c
->MaxArrayTextureLayers
100 = screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
);
102 /* Define max viewport size and max renderbuffer size in terms of
103 * max texture size (note: max tex RECT size = max tex 2D size).
104 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
106 c
->MaxViewportWidth
=
107 c
->MaxViewportHeight
=
108 c
->MaxRenderbufferSize
= c
->MaxTextureRectSize
;
110 c
->ViewportSubpixelBits
=
111 screen
->get_param(screen
, PIPE_CAP_VIEWPORT_SUBPIXEL_BITS
);
113 c
->MaxDrawBuffers
= c
->MaxColorAttachments
=
114 _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
115 1, MAX_DRAW_BUFFERS
);
117 c
->MaxDualSourceDrawBuffers
=
118 _clamp(screen
->get_param(screen
,
119 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS
),
120 0, MAX_DRAW_BUFFERS
);
123 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_LINE_WIDTH
));
125 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_LINE_WIDTH_AA
));
128 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_POINT_WIDTH
));
130 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_POINT_WIDTH_AA
));
132 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
133 * for non-aa sizes, but we can go down to 0.0 for aa points.
135 c
->MinPointSize
= 1.0f
;
136 c
->MinPointSizeAA
= 0.0f
;
138 c
->MaxTextureMaxAnisotropy
=
140 screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY
));
142 c
->MaxTextureLodBias
=
143 screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS
);
145 c
->QuadsFollowProvokingVertexConvention
=
146 screen
->get_param(screen
,
147 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION
);
149 c
->MaxUniformBlockSize
=
150 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
151 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE
);
152 if (c
->MaxUniformBlockSize
< 16384) {
156 for (sh
= 0; sh
< PIPE_SHADER_TYPES
; ++sh
) {
157 struct gl_shader_compiler_options
*options
;
158 struct gl_program_constants
*pc
;
161 case PIPE_SHADER_FRAGMENT
:
162 pc
= &c
->Program
[MESA_SHADER_FRAGMENT
];
163 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_FRAGMENT
];
165 case PIPE_SHADER_VERTEX
:
166 pc
= &c
->Program
[MESA_SHADER_VERTEX
];
167 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_VERTEX
];
169 case PIPE_SHADER_GEOMETRY
:
170 pc
= &c
->Program
[MESA_SHADER_GEOMETRY
];
171 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_GEOMETRY
];
173 case PIPE_SHADER_TESS_CTRL
:
174 pc
= &c
->Program
[MESA_SHADER_TESS_CTRL
];
175 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_TESS_CTRL
];
177 case PIPE_SHADER_TESS_EVAL
:
178 pc
= &c
->Program
[MESA_SHADER_TESS_EVAL
];
179 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_TESS_EVAL
];
181 case PIPE_SHADER_COMPUTE
:
182 pc
= &c
->Program
[MESA_SHADER_COMPUTE
];
183 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_COMPUTE
];
185 if (!screen
->get_param(screen
, PIPE_CAP_COMPUTE
))
188 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUPPORTED_IRS
);
189 if (!(supported_irs
& (1 << PIPE_SHADER_IR_TGSI
)))
196 pc
->MaxTextureImageUnits
=
197 _min(screen
->get_shader_param(screen
, sh
,
198 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS
),
199 MAX_TEXTURE_IMAGE_UNITS
);
201 pc
->MaxInstructions
=
202 pc
->MaxNativeInstructions
=
203 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
204 pc
->MaxAluInstructions
=
205 pc
->MaxNativeAluInstructions
=
206 screen
->get_shader_param(screen
, sh
,
207 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS
);
208 pc
->MaxTexInstructions
=
209 pc
->MaxNativeTexInstructions
=
210 screen
->get_shader_param(screen
, sh
,
211 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS
);
212 pc
->MaxTexIndirections
=
213 pc
->MaxNativeTexIndirections
=
214 screen
->get_shader_param(screen
, sh
,
215 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
);
217 pc
->MaxNativeAttribs
=
218 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
);
221 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEMPS
);
223 pc
->MaxNativeAddressRegs
= sh
== PIPE_SHADER_VERTEX
? 1 : 0;
225 pc
->MaxNativeParameters
=
226 screen
->get_shader_param(screen
, sh
,
227 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE
) / sizeof(float[4]);
228 pc
->MaxInputComponents
=
229 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
) * 4;
230 pc
->MaxOutputComponents
=
231 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_OUTPUTS
) * 4;
233 pc
->MaxUniformComponents
=
234 4 * MIN2(pc
->MaxNativeParameters
, MAX_UNIFORMS
);
236 pc
->MaxUniformBlocks
=
237 screen
->get_shader_param(screen
, sh
,
238 PIPE_SHADER_CAP_MAX_CONST_BUFFERS
);
239 if (pc
->MaxUniformBlocks
)
240 pc
->MaxUniformBlocks
-= 1; /* The first one is for ordinary uniforms. */
241 pc
->MaxUniformBlocks
= _min(pc
->MaxUniformBlocks
, MAX_UNIFORM_BUFFERS
);
243 pc
->MaxCombinedUniformComponents
= (pc
->MaxUniformComponents
+
244 c
->MaxUniformBlockSize
/ 4 *
245 pc
->MaxUniformBlocks
);
247 temp
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS
);
250 * for separate atomic counters get the actual hw limits
251 * per stage on atomic counters and buffers
254 pc
->MaxAtomicCounters
= temp
;
255 pc
->MaxAtomicBuffers
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS
);
256 pc
->MaxShaderStorageBlocks
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS
);
258 pc
->MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
259 pc
->MaxAtomicBuffers
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS
) / 2;
260 pc
->MaxShaderStorageBlocks
= pc
->MaxAtomicBuffers
;
262 pc
->MaxImageUniforms
= screen
->get_shader_param(
263 screen
, sh
, PIPE_SHADER_CAP_MAX_SHADER_IMAGES
);
265 /* Gallium doesn't really care about local vs. env parameters so use the
268 pc
->MaxLocalParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_LOCAL_PARAMS
);
269 pc
->MaxEnvParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_ENV_PARAMS
);
271 if (screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_INTEGERS
)) {
272 pc
->LowInt
.RangeMin
= 31;
273 pc
->LowInt
.RangeMax
= 30;
274 pc
->LowInt
.Precision
= 0;
275 pc
->MediumInt
= pc
->HighInt
= pc
->LowInt
;
278 /* TODO: make these more fine-grained if anyone needs it */
279 options
->MaxIfDepth
=
280 screen
->get_shader_param(screen
, sh
,
281 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
282 options
->EmitNoLoops
=
283 !screen
->get_shader_param(screen
, sh
,
284 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
285 options
->EmitNoMainReturn
=
286 !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
288 options
->EmitNoCont
=
289 !screen
->get_shader_param(screen
, sh
,
290 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED
);
292 options
->EmitNoIndirectInput
=
293 !screen
->get_shader_param(screen
, sh
,
294 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR
);
295 options
->EmitNoIndirectOutput
=
296 !screen
->get_shader_param(screen
, sh
,
297 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR
);
298 options
->EmitNoIndirectTemp
=
299 !screen
->get_shader_param(screen
, sh
,
300 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR
);
301 options
->EmitNoIndirectUniform
=
302 !screen
->get_shader_param(screen
, sh
,
303 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR
);
305 if (pc
->MaxNativeInstructions
&&
306 (options
->EmitNoIndirectUniform
|| pc
->MaxUniformBlocks
< 12)) {
310 if (options
->EmitNoLoops
)
311 options
->MaxUnrollIterations
=
312 MIN2(screen
->get_shader_param(screen
, sh
,
313 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
),
316 options
->MaxUnrollIterations
=
317 screen
->get_shader_param(screen
, sh
,
318 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT
);
320 options
->LowerCombinedClipCullDistance
= true;
321 options
->LowerBufferInterfaceBlocks
= true;
324 c
->GLSLOptimizeConservatively
=
325 screen
->get_param(screen
, PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY
);
326 c
->LowerTessLevel
= true;
327 c
->LowerCsDerivedVariables
= true;
328 c
->PrimitiveRestartForPatches
=
329 screen
->get_param(screen
, PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES
);
331 c
->MaxCombinedTextureImageUnits
=
332 _min(c
->Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
333 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
+
334 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
+
335 c
->Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
336 c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
+
337 c
->Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
,
338 MAX_COMBINED_TEXTURE_IMAGE_UNITS
);
340 /* This depends on program constants. */
341 c
->MaxTextureCoordUnits
342 = _min(c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
,
343 MAX_TEXTURE_COORD_UNITS
);
346 _min(c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
,
347 c
->MaxTextureCoordUnits
);
349 c
->Program
[MESA_SHADER_VERTEX
].MaxAttribs
=
350 MIN2(c
->Program
[MESA_SHADER_VERTEX
].MaxAttribs
, 16);
352 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
353 * of inputs. It's always 2 colors + N generic inputs. */
354 c
->MaxVarying
= screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
355 PIPE_SHADER_CAP_MAX_INPUTS
);
356 c
->MaxVarying
= MIN2(c
->MaxVarying
, MAX_VARYING
);
357 c
->MaxGeometryOutputVertices
=
358 screen
->get_param(screen
, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES
);
359 c
->MaxGeometryTotalOutputComponents
=
360 screen
->get_param(screen
, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS
);
361 c
->MaxTessPatchComponents
=
362 MIN2(screen
->get_param(screen
, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS
),
365 c
->MinProgramTexelOffset
=
366 screen
->get_param(screen
, PIPE_CAP_MIN_TEXEL_OFFSET
);
367 c
->MaxProgramTexelOffset
=
368 screen
->get_param(screen
, PIPE_CAP_MAX_TEXEL_OFFSET
);
370 c
->MaxProgramTextureGatherComponents
=
371 screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS
);
372 c
->MinProgramTextureGatherOffset
=
373 screen
->get_param(screen
, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET
);
374 c
->MaxProgramTextureGatherOffset
=
375 screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET
);
377 c
->MaxTransformFeedbackBuffers
=
378 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
);
379 c
->MaxTransformFeedbackBuffers
= MIN2(c
->MaxTransformFeedbackBuffers
,
380 MAX_FEEDBACK_BUFFERS
);
381 c
->MaxTransformFeedbackSeparateComponents
=
382 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS
);
383 c
->MaxTransformFeedbackInterleavedComponents
=
384 screen
->get_param(screen
,
385 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS
);
386 c
->MaxVertexStreams
=
387 MAX2(1, screen
->get_param(screen
, PIPE_CAP_MAX_VERTEX_STREAMS
));
389 /* The vertex stream must fit into pipe_stream_output_info::stream */
390 assert(c
->MaxVertexStreams
<= 4);
392 c
->MaxVertexAttribStride
393 = screen
->get_param(screen
, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE
);
395 c
->StripTextureBorder
= GL_TRUE
;
397 c
->GLSLSkipStrictMaxUniformLimitCheck
=
398 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS
);
400 c
->UniformBufferOffsetAlignment
=
401 screen
->get_param(screen
, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT
);
404 extensions
->ARB_uniform_buffer_object
= GL_TRUE
;
405 c
->MaxCombinedUniformBlocks
= c
->MaxUniformBufferBindings
=
406 c
->Program
[MESA_SHADER_VERTEX
].MaxUniformBlocks
+
407 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxUniformBlocks
+
408 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxUniformBlocks
+
409 c
->Program
[MESA_SHADER_GEOMETRY
].MaxUniformBlocks
+
410 c
->Program
[MESA_SHADER_FRAGMENT
].MaxUniformBlocks
+
411 c
->Program
[MESA_SHADER_COMPUTE
].MaxUniformBlocks
;
412 assert(c
->MaxCombinedUniformBlocks
<= MAX_COMBINED_UNIFORM_BUFFERS
);
415 c
->GLSLFragCoordIsSysVal
=
416 screen
->get_param(screen
, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL
);
417 c
->GLSLFrontFacingIsSysVal
=
418 screen
->get_param(screen
, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL
);
420 c
->MaxAtomicBufferBindings
=
421 c
->Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
424 /* for separate atomic buffers - there atomic buffer size will be
426 c
->MaxAtomicBufferSize
= c
->Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
* ATOMIC_COUNTER_SIZE
;
427 /* on all HW with separate atomic (evergreen) the following
428 lines are true. not sure it's worth adding CAPs for this at this
430 c
->MaxCombinedAtomicCounters
= c
->Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
431 c
->MaxCombinedAtomicBuffers
= c
->Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
433 c
->MaxCombinedAtomicBuffers
=
434 c
->Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
+
435 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
+
436 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
+
437 c
->Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
+
438 c
->Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
439 assert(c
->MaxCombinedAtomicBuffers
<= MAX_COMBINED_ATOMIC_BUFFERS
);
442 if (c
->MaxCombinedAtomicBuffers
> 0) {
443 extensions
->ARB_shader_atomic_counters
= GL_TRUE
;
444 extensions
->ARB_shader_atomic_counter_ops
= GL_TRUE
;
447 c
->MaxCombinedShaderOutputResources
= c
->MaxDrawBuffers
;
448 c
->ShaderStorageBufferOffsetAlignment
=
449 screen
->get_param(screen
, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT
);
450 if (c
->ShaderStorageBufferOffsetAlignment
) {
451 /* for hw atomic counters leaves these at default for now */
453 c
->MaxCombinedShaderStorageBlocks
= c
->MaxShaderStorageBufferBindings
=
454 c
->MaxCombinedAtomicBuffers
;
455 c
->MaxCombinedShaderOutputResources
+=
456 c
->MaxCombinedShaderStorageBlocks
;
457 c
->MaxShaderStorageBlockSize
= 1 << 27;
458 extensions
->ARB_shader_storage_buffer_object
= GL_TRUE
;
461 c
->MaxCombinedImageUniforms
=
462 c
->Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
+
463 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
+
464 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
+
465 c
->Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
+
466 c
->Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
+
467 c
->Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
;
468 c
->MaxCombinedShaderOutputResources
+= c
->MaxCombinedImageUniforms
;
469 c
->MaxImageUnits
= MAX_IMAGE_UNITS
;
470 if (c
->MaxCombinedImageUniforms
) {
471 extensions
->ARB_shader_image_load_store
= GL_TRUE
;
472 extensions
->ARB_shader_image_size
= GL_TRUE
;
475 /* ARB_framebuffer_no_attachments */
476 c
->MaxFramebufferWidth
= c
->MaxViewportWidth
;
477 c
->MaxFramebufferHeight
= c
->MaxViewportHeight
;
478 /* NOTE: we cheat here a little by assuming that
479 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
480 * number of layers as we need, although we technically
481 * could have more the generality is not really useful
484 c
->MaxFramebufferLayers
=
485 screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
);
487 c
->MaxWindowRectangles
=
488 screen
->get_param(screen
, PIPE_CAP_MAX_WINDOW_RECTANGLES
);
490 c
->SparseBufferPageSize
=
491 screen
->get_param(screen
, PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE
);
493 c
->AllowMappedBuffersDuringExecution
=
494 screen
->get_param(screen
, PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION
);
496 c
->UseSTD430AsDefaultPacking
=
497 screen
->get_param(screen
, PIPE_CAP_LOAD_CONSTBUF
);
499 /* limit the max combined shader output resources to a driver limit */
500 temp
= screen
->get_param(screen
, PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES
);
501 if (temp
> 0 && c
->MaxCombinedShaderOutputResources
> temp
)
502 c
->MaxCombinedShaderOutputResources
= temp
;
507 * Given a member \c x of struct gl_extensions, return offset of
510 #define o(x) offsetof(struct gl_extensions, x)
513 struct st_extension_cap_mapping
{
514 int extension_offset
;
518 struct st_extension_format_mapping
{
519 int extension_offset
[2];
520 enum pipe_format format
[32];
522 /* If TRUE, at least one format must be supported for the extensions to be
523 * advertised. If FALSE, all the formats must be supported. */
524 GLboolean need_at_least_one
;
528 * Enable extensions if certain pipe formats are supported by the driver.
529 * What extensions will be enabled and what formats must be supported is
530 * described by the array of st_extension_format_mapping.
532 * target and bind_flags are passed to is_format_supported.
535 init_format_extensions(struct pipe_screen
*screen
,
536 struct gl_extensions
*extensions
,
537 const struct st_extension_format_mapping
*mapping
,
538 unsigned num_mappings
,
539 enum pipe_texture_target target
,
542 GLboolean
*extension_table
= (GLboolean
*) extensions
;
545 int num_formats
= ARRAY_SIZE(mapping
->format
);
546 int num_ext
= ARRAY_SIZE(mapping
->extension_offset
);
548 for (i
= 0; i
< num_mappings
; i
++) {
549 int num_supported
= 0;
551 /* Examine each format in the list. */
552 for (j
= 0; j
< num_formats
&& mapping
[i
].format
[j
]; j
++) {
553 if (screen
->is_format_supported(screen
, mapping
[i
].format
[j
],
554 target
, 0, bind_flags
)) {
559 if (!num_supported
||
560 (!mapping
[i
].need_at_least_one
&& num_supported
!= j
)) {
564 /* Enable all extensions in the list. */
565 for (j
= 0; j
< num_ext
&& mapping
[i
].extension_offset
[j
]; j
++)
566 extension_table
[mapping
[i
].extension_offset
[j
]] = GL_TRUE
;
572 * Given a list of formats and bind flags, return the maximum number
573 * of samples supported by any of those formats.
576 get_max_samples_for_formats(struct pipe_screen
*screen
,
577 unsigned num_formats
,
578 const enum pipe_format
*formats
,
579 unsigned max_samples
,
584 for (i
= max_samples
; i
> 0; --i
) {
585 for (f
= 0; f
< num_formats
; f
++) {
586 if (screen
->is_format_supported(screen
, formats
[f
],
587 PIPE_TEXTURE_2D
, i
, bind
)) {
597 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
598 * which GL extensions are supported.
599 * Quite a few extensions are always supported because they are standard
600 * features or can be built on top of other gallium features.
601 * Some fine tuning may still be needed.
603 void st_init_extensions(struct pipe_screen
*screen
,
604 struct gl_constants
*consts
,
605 struct gl_extensions
*extensions
,
606 struct st_config_options
*options
,
610 GLboolean
*extension_table
= (GLboolean
*) extensions
;
612 static const struct st_extension_cap_mapping cap_mapping
[] = {
613 { o(ARB_base_instance
), PIPE_CAP_START_INSTANCE
},
614 { o(ARB_bindless_texture
), PIPE_CAP_BINDLESS_TEXTURE
},
615 { o(ARB_buffer_storage
), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT
},
616 { o(ARB_clear_texture
), PIPE_CAP_CLEAR_TEXTURE
},
617 { o(ARB_clip_control
), PIPE_CAP_CLIP_HALFZ
},
618 { o(ARB_color_buffer_float
), PIPE_CAP_VERTEX_COLOR_UNCLAMPED
},
619 { o(ARB_conditional_render_inverted
), PIPE_CAP_CONDITIONAL_RENDER_INVERTED
},
620 { o(ARB_copy_image
), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS
},
621 { o(OES_copy_image
), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS
},
622 { o(ARB_cull_distance
), PIPE_CAP_CULL_DISTANCE
},
623 { o(ARB_depth_clamp
), PIPE_CAP_DEPTH_CLIP_DISABLE
},
624 { o(ARB_depth_texture
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
625 { o(ARB_derivative_control
), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE
},
626 { o(ARB_draw_buffers_blend
), PIPE_CAP_INDEP_BLEND_FUNC
},
627 { o(ARB_draw_indirect
), PIPE_CAP_DRAW_INDIRECT
},
628 { o(ARB_draw_instanced
), PIPE_CAP_TGSI_INSTANCEID
},
629 { o(ARB_fragment_program_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
630 { o(ARB_framebuffer_object
), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES
},
631 { o(ARB_gpu_shader_int64
), PIPE_CAP_INT64
},
632 { o(ARB_indirect_parameters
), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS
},
633 { o(ARB_instanced_arrays
), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR
},
634 { o(ARB_occlusion_query
), PIPE_CAP_OCCLUSION_QUERY
},
635 { o(ARB_occlusion_query2
), PIPE_CAP_OCCLUSION_QUERY
},
636 { o(ARB_pipeline_statistics_query
), PIPE_CAP_QUERY_PIPELINE_STATISTICS
},
637 { o(ARB_point_sprite
), PIPE_CAP_POINT_SPRITE
},
638 { o(ARB_polygon_offset_clamp
), PIPE_CAP_POLYGON_OFFSET_CLAMP
},
639 { o(ARB_post_depth_coverage
), PIPE_CAP_POST_DEPTH_COVERAGE
},
640 { o(ARB_query_buffer_object
), PIPE_CAP_QUERY_BUFFER_OBJECT
},
641 { o(ARB_robust_buffer_access_behavior
), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR
},
642 { o(ARB_sample_shading
), PIPE_CAP_SAMPLE_SHADING
},
643 { o(ARB_seamless_cube_map
), PIPE_CAP_SEAMLESS_CUBE_MAP
},
644 { o(ARB_shader_ballot
), PIPE_CAP_TGSI_BALLOT
},
645 { o(ARB_shader_clock
), PIPE_CAP_TGSI_CLOCK
},
646 { o(ARB_shader_draw_parameters
), PIPE_CAP_DRAW_PARAMETERS
},
647 { o(ARB_shader_group_vote
), PIPE_CAP_TGSI_VOTE
},
648 { o(ARB_shader_stencil_export
), PIPE_CAP_SHADER_STENCIL_EXPORT
},
649 { o(ARB_shader_texture_image_samples
), PIPE_CAP_TGSI_TXQS
},
650 { o(ARB_shader_texture_lod
), PIPE_CAP_SM3
},
651 { o(ARB_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
652 { o(ARB_sparse_buffer
), PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE
},
653 { o(ARB_texture_buffer_object
), PIPE_CAP_TEXTURE_BUFFER_OBJECTS
},
654 { o(ARB_texture_cube_map_array
), PIPE_CAP_CUBE_MAP_ARRAY
},
655 { o(ARB_texture_gather
), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS
},
656 { o(ARB_texture_mirror_clamp_to_edge
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
657 { o(ARB_texture_multisample
), PIPE_CAP_TEXTURE_MULTISAMPLE
},
658 { o(ARB_texture_non_power_of_two
), PIPE_CAP_NPOT_TEXTURES
},
659 { o(ARB_texture_query_lod
), PIPE_CAP_TEXTURE_QUERY_LOD
},
660 { o(ARB_texture_view
), PIPE_CAP_SAMPLER_VIEW_TARGET
},
661 { o(ARB_timer_query
), PIPE_CAP_QUERY_TIMESTAMP
},
662 { o(ARB_transform_feedback2
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
663 { o(ARB_transform_feedback3
), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS
},
664 { o(ARB_transform_feedback_overflow_query
), PIPE_CAP_QUERY_SO_OVERFLOW
},
666 { o(KHR_blend_equation_advanced
), PIPE_CAP_TGSI_FS_FBFETCH
},
668 { o(EXT_blend_equation_separate
), PIPE_CAP_BLEND_EQUATION_SEPARATE
},
669 { o(EXT_depth_bounds_test
), PIPE_CAP_DEPTH_BOUNDS_TEST
},
670 { o(EXT_draw_buffers2
), PIPE_CAP_INDEP_BLEND_ENABLE
},
671 { o(EXT_memory_object
), PIPE_CAP_MEMOBJ
},
672 { o(EXT_memory_object_fd
), PIPE_CAP_MEMOBJ
},
673 { o(EXT_stencil_two_side
), PIPE_CAP_TWO_SIDED_STENCIL
},
674 { o(EXT_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
675 { o(EXT_texture_filter_anisotropic
), PIPE_CAP_ANISOTROPIC_FILTER
},
676 { o(EXT_texture_mirror_clamp
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
677 { o(EXT_texture_swizzle
), PIPE_CAP_TEXTURE_SWIZZLE
},
678 { o(EXT_transform_feedback
), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
},
679 { o(EXT_window_rectangles
), PIPE_CAP_MAX_WINDOW_RECTANGLES
},
681 { o(AMD_pinned_memory
), PIPE_CAP_RESOURCE_FROM_USER_MEMORY
},
682 { o(ATI_meminfo
), PIPE_CAP_QUERY_MEMORY_INFO
},
683 { o(AMD_seamless_cubemap_per_texture
), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE
},
684 { o(ATI_separate_stencil
), PIPE_CAP_TWO_SIDED_STENCIL
},
685 { o(ATI_texture_mirror_once
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
686 { o(MESA_tile_raster_order
), PIPE_CAP_TILE_RASTER_ORDER
},
687 { o(NV_conditional_render
), PIPE_CAP_CONDITIONAL_RENDER
},
688 { o(NV_fill_rectangle
), PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE
},
689 { o(NV_primitive_restart
), PIPE_CAP_PRIMITIVE_RESTART
},
690 { o(NV_texture_barrier
), PIPE_CAP_TEXTURE_BARRIER
},
691 { o(NVX_gpu_memory_info
), PIPE_CAP_QUERY_MEMORY_INFO
},
692 /* GL_NV_point_sprite is not supported by gallium because we don't
693 * support the GL_POINT_SPRITE_R_MODE_NV option. */
695 { o(OES_standard_derivatives
), PIPE_CAP_SM3
},
696 { o(OES_texture_float_linear
), PIPE_CAP_TEXTURE_FLOAT_LINEAR
},
697 { o(OES_texture_half_float_linear
), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR
},
700 /* Required: render target and sampler support */
701 static const struct st_extension_format_mapping rendertarget_mapping
[] = {
702 { { o(ARB_texture_float
) },
703 { PIPE_FORMAT_R32G32B32A32_FLOAT
,
704 PIPE_FORMAT_R16G16B16A16_FLOAT
} },
706 { { o(OES_texture_float
) },
707 { PIPE_FORMAT_R32G32B32A32_FLOAT
} },
709 { { o(OES_texture_half_float
) },
710 { PIPE_FORMAT_R16G16B16A16_FLOAT
} },
712 { { o(ARB_texture_rgb10_a2ui
) },
713 { PIPE_FORMAT_R10G10B10A2_UINT
,
714 PIPE_FORMAT_B10G10R10A2_UINT
},
715 GL_TRUE
}, /* at least one format must be supported */
717 { { o(EXT_framebuffer_sRGB
) },
718 { PIPE_FORMAT_A8B8G8R8_SRGB
,
719 PIPE_FORMAT_B8G8R8A8_SRGB
},
720 GL_TRUE
}, /* at least one format must be supported */
722 { { o(EXT_packed_float
) },
723 { PIPE_FORMAT_R11G11B10_FLOAT
} },
725 { { o(EXT_texture_integer
) },
726 { PIPE_FORMAT_R32G32B32A32_UINT
,
727 PIPE_FORMAT_R32G32B32A32_SINT
} },
729 { { o(ARB_texture_rg
) },
730 { PIPE_FORMAT_R8_UNORM
,
731 PIPE_FORMAT_R8G8_UNORM
} },
734 /* Required: depth stencil and sampler support */
735 static const struct st_extension_format_mapping depthstencil_mapping
[] = {
736 { { o(ARB_depth_buffer_float
) },
737 { PIPE_FORMAT_Z32_FLOAT
,
738 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
} },
741 /* Required: sampler support */
742 static const struct st_extension_format_mapping texture_mapping
[] = {
743 { { o(ARB_texture_compression_rgtc
) },
744 { PIPE_FORMAT_RGTC1_UNORM
,
745 PIPE_FORMAT_RGTC1_SNORM
,
746 PIPE_FORMAT_RGTC2_UNORM
,
747 PIPE_FORMAT_RGTC2_SNORM
} },
749 { { o(EXT_texture_compression_latc
) },
750 { PIPE_FORMAT_LATC1_UNORM
,
751 PIPE_FORMAT_LATC1_SNORM
,
752 PIPE_FORMAT_LATC2_UNORM
,
753 PIPE_FORMAT_LATC2_SNORM
} },
755 { { o(EXT_texture_compression_s3tc
),
756 o(ANGLE_texture_compression_dxt
) },
757 { PIPE_FORMAT_DXT1_RGB
,
758 PIPE_FORMAT_DXT1_RGBA
,
759 PIPE_FORMAT_DXT3_RGBA
,
760 PIPE_FORMAT_DXT5_RGBA
} },
762 { { o(ARB_texture_compression_bptc
) },
763 { PIPE_FORMAT_BPTC_RGBA_UNORM
,
764 PIPE_FORMAT_BPTC_SRGBA
,
765 PIPE_FORMAT_BPTC_RGB_FLOAT
,
766 PIPE_FORMAT_BPTC_RGB_UFLOAT
} },
768 { { o(KHR_texture_compression_astc_ldr
) },
769 { PIPE_FORMAT_ASTC_4x4
,
770 PIPE_FORMAT_ASTC_5x4
,
771 PIPE_FORMAT_ASTC_5x5
,
772 PIPE_FORMAT_ASTC_6x5
,
773 PIPE_FORMAT_ASTC_6x6
,
774 PIPE_FORMAT_ASTC_8x5
,
775 PIPE_FORMAT_ASTC_8x6
,
776 PIPE_FORMAT_ASTC_8x8
,
777 PIPE_FORMAT_ASTC_10x5
,
778 PIPE_FORMAT_ASTC_10x6
,
779 PIPE_FORMAT_ASTC_10x8
,
780 PIPE_FORMAT_ASTC_10x10
,
781 PIPE_FORMAT_ASTC_12x10
,
782 PIPE_FORMAT_ASTC_12x12
,
783 PIPE_FORMAT_ASTC_4x4_SRGB
,
784 PIPE_FORMAT_ASTC_5x4_SRGB
,
785 PIPE_FORMAT_ASTC_5x5_SRGB
,
786 PIPE_FORMAT_ASTC_6x5_SRGB
,
787 PIPE_FORMAT_ASTC_6x6_SRGB
,
788 PIPE_FORMAT_ASTC_8x5_SRGB
,
789 PIPE_FORMAT_ASTC_8x6_SRGB
,
790 PIPE_FORMAT_ASTC_8x8_SRGB
,
791 PIPE_FORMAT_ASTC_10x5_SRGB
,
792 PIPE_FORMAT_ASTC_10x6_SRGB
,
793 PIPE_FORMAT_ASTC_10x8_SRGB
,
794 PIPE_FORMAT_ASTC_10x10_SRGB
,
795 PIPE_FORMAT_ASTC_12x10_SRGB
,
796 PIPE_FORMAT_ASTC_12x12_SRGB
} },
798 { { o(EXT_texture_shared_exponent
) },
799 { PIPE_FORMAT_R9G9B9E5_FLOAT
} },
801 { { o(EXT_texture_snorm
) },
802 { PIPE_FORMAT_R8G8B8A8_SNORM
} },
804 { { o(EXT_texture_sRGB
),
805 o(EXT_texture_sRGB_decode
) },
806 { PIPE_FORMAT_A8B8G8R8_SRGB
,
807 PIPE_FORMAT_B8G8R8A8_SRGB
},
808 GL_TRUE
}, /* at least one format must be supported */
810 { { o(EXT_texture_type_2_10_10_10_REV
) },
811 { PIPE_FORMAT_R10G10B10A2_UNORM
,
812 PIPE_FORMAT_B10G10R10A2_UNORM
},
813 GL_TRUE
}, /* at least one format must be supported */
815 { { o(ATI_texture_compression_3dc
) },
816 { PIPE_FORMAT_LATC2_UNORM
} },
818 { { o(MESA_ycbcr_texture
) },
821 GL_TRUE
}, /* at least one format must be supported */
823 { { o(OES_compressed_ETC1_RGB8_texture
) },
824 { PIPE_FORMAT_ETC1_RGB8
,
825 PIPE_FORMAT_R8G8B8A8_UNORM
},
826 GL_TRUE
}, /* at least one format must be supported */
828 { { o(ARB_stencil_texturing
),
829 o(ARB_texture_stencil8
) },
830 { PIPE_FORMAT_X24S8_UINT
,
831 PIPE_FORMAT_S8X24_UINT
},
832 GL_TRUE
}, /* at least one format must be supported */
835 /* Required: vertex fetch support. */
836 static const struct st_extension_format_mapping vertex_mapping
[] = {
837 { { o(EXT_vertex_array_bgra
) },
838 { PIPE_FORMAT_B8G8R8A8_UNORM
} },
839 { { o(ARB_vertex_type_2_10_10_10_rev
) },
840 { PIPE_FORMAT_R10G10B10A2_UNORM
,
841 PIPE_FORMAT_B10G10R10A2_UNORM
,
842 PIPE_FORMAT_R10G10B10A2_SNORM
,
843 PIPE_FORMAT_B10G10R10A2_SNORM
,
844 PIPE_FORMAT_R10G10B10A2_USCALED
,
845 PIPE_FORMAT_B10G10R10A2_USCALED
,
846 PIPE_FORMAT_R10G10B10A2_SSCALED
,
847 PIPE_FORMAT_B10G10R10A2_SSCALED
} },
848 { { o(ARB_vertex_type_10f_11f_11f_rev
) },
849 { PIPE_FORMAT_R11G11B10_FLOAT
} },
852 static const struct st_extension_format_mapping tbo_rgb32
[] = {
853 { {o(ARB_texture_buffer_object_rgb32
) },
854 { PIPE_FORMAT_R32G32B32_FLOAT
,
855 PIPE_FORMAT_R32G32B32_UINT
,
856 PIPE_FORMAT_R32G32B32_SINT
,
861 * Extensions that are supported by all Gallium drivers:
863 extensions
->ARB_ES2_compatibility
= GL_TRUE
;
864 extensions
->ARB_draw_elements_base_vertex
= GL_TRUE
;
865 extensions
->ARB_explicit_attrib_location
= GL_TRUE
;
866 extensions
->ARB_explicit_uniform_location
= GL_TRUE
;
867 extensions
->ARB_fragment_coord_conventions
= GL_TRUE
;
868 extensions
->ARB_fragment_program
= GL_TRUE
;
869 extensions
->ARB_fragment_shader
= GL_TRUE
;
870 extensions
->ARB_half_float_vertex
= GL_TRUE
;
871 extensions
->ARB_internalformat_query
= GL_TRUE
;
872 extensions
->ARB_internalformat_query2
= GL_TRUE
;
873 extensions
->ARB_map_buffer_range
= GL_TRUE
;
874 extensions
->ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
875 extensions
->ARB_texture_cube_map
= GL_TRUE
;
876 extensions
->ARB_texture_env_combine
= GL_TRUE
;
877 extensions
->ARB_texture_env_crossbar
= GL_TRUE
;
878 extensions
->ARB_texture_env_dot3
= GL_TRUE
;
879 extensions
->ARB_vertex_program
= GL_TRUE
;
880 extensions
->ARB_vertex_shader
= GL_TRUE
;
882 extensions
->EXT_blend_color
= GL_TRUE
;
883 extensions
->EXT_blend_func_separate
= GL_TRUE
;
884 extensions
->EXT_blend_minmax
= GL_TRUE
;
885 extensions
->EXT_gpu_program_parameters
= GL_TRUE
;
886 extensions
->EXT_pixel_buffer_object
= GL_TRUE
;
887 extensions
->EXT_point_parameters
= GL_TRUE
;
888 extensions
->EXT_provoking_vertex
= GL_TRUE
;
890 extensions
->EXT_texture_env_dot3
= GL_TRUE
;
892 extensions
->ATI_fragment_shader
= GL_TRUE
;
893 extensions
->ATI_texture_env_combine3
= GL_TRUE
;
895 extensions
->MESA_pack_invert
= GL_TRUE
;
897 extensions
->NV_fog_distance
= GL_TRUE
;
898 extensions
->NV_texture_env_combine4
= GL_TRUE
;
899 extensions
->NV_texture_rectangle
= GL_TRUE
;
901 extensions
->OES_EGL_image
= GL_TRUE
;
902 extensions
->OES_EGL_image_external
= GL_TRUE
;
903 extensions
->OES_draw_texture
= GL_TRUE
;
905 /* Expose the extensions which directly correspond to gallium caps. */
906 for (i
= 0; i
< ARRAY_SIZE(cap_mapping
); i
++) {
907 if (screen
->get_param(screen
, cap_mapping
[i
].cap
)) {
908 extension_table
[cap_mapping
[i
].extension_offset
] = GL_TRUE
;
912 /* Expose the extensions which directly correspond to gallium formats. */
913 init_format_extensions(screen
, extensions
, rendertarget_mapping
,
914 ARRAY_SIZE(rendertarget_mapping
), PIPE_TEXTURE_2D
,
915 PIPE_BIND_RENDER_TARGET
| PIPE_BIND_SAMPLER_VIEW
);
916 init_format_extensions(screen
, extensions
, depthstencil_mapping
,
917 ARRAY_SIZE(depthstencil_mapping
), PIPE_TEXTURE_2D
,
918 PIPE_BIND_DEPTH_STENCIL
| PIPE_BIND_SAMPLER_VIEW
);
919 init_format_extensions(screen
, extensions
, texture_mapping
,
920 ARRAY_SIZE(texture_mapping
), PIPE_TEXTURE_2D
,
921 PIPE_BIND_SAMPLER_VIEW
);
922 init_format_extensions(screen
, extensions
, vertex_mapping
,
923 ARRAY_SIZE(vertex_mapping
), PIPE_BUFFER
,
924 PIPE_BIND_VERTEX_BUFFER
);
926 /* Figure out GLSL support and set GLSLVersion to it. */
927 consts
->GLSLVersion
= screen
->get_param(screen
, PIPE_CAP_GLSL_FEATURE_LEVEL
);
929 _mesa_override_glsl_version(consts
);
931 if (options
->force_glsl_version
> 0 &&
932 options
->force_glsl_version
<= consts
->GLSLVersion
) {
933 consts
->ForceGLSLVersion
= options
->force_glsl_version
;
936 consts
->AllowHigherCompatVersion
= options
->allow_higher_compat_version
;
938 consts
->ForceGLSLAbsSqrt
= options
->force_glsl_abs_sqrt
;
940 consts
->AllowGLSLBuiltinVariableRedeclaration
= options
->allow_glsl_builtin_variable_redeclaration
;
942 consts
->dri_config_options_sha1
= options
->config_options_sha1
;
944 if (consts
->GLSLVersion
>= 400)
945 extensions
->ARB_gpu_shader5
= GL_TRUE
;
946 if (consts
->GLSLVersion
>= 410)
947 extensions
->ARB_shader_precision
= GL_TRUE
;
949 /* This extension needs full OpenGL 3.2, but we don't know if that's
950 * supported at this point. Only check the GLSL version. */
951 if (consts
->GLSLVersion
>= 150 &&
952 screen
->get_param(screen
, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT
)) {
953 extensions
->AMD_vertex_shader_layer
= GL_TRUE
;
956 if (consts
->GLSLVersion
>= 140) {
957 if (screen
->get_param(screen
, PIPE_CAP_TGSI_ARRAY_COMPONENTS
) &&
958 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
959 PIPE_SHADER_CAP_PREFERRED_IR
) == PIPE_SHADER_IR_TGSI
)
960 extensions
->ARB_enhanced_layouts
= GL_TRUE
;
963 if (consts
->GLSLVersion
>= 130) {
964 consts
->NativeIntegers
= GL_TRUE
;
965 consts
->MaxClipPlanes
= 8;
967 if (screen
->get_param(screen
, PIPE_CAP_VERTEXID_NOBASE
)) {
968 consts
->VertexID_is_zero_based
= GL_TRUE
;
971 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
972 extensions
->ARB_conservative_depth
= GL_TRUE
;
973 extensions
->ARB_shading_language_packing
= GL_TRUE
;
974 extensions
->OES_depth_texture_cube_map
= GL_TRUE
;
975 extensions
->ARB_shading_language_420pack
= GL_TRUE
;
976 extensions
->ARB_texture_query_levels
= GL_TRUE
;
978 if (!options
->disable_shader_bit_encoding
) {
979 extensions
->ARB_shader_bit_encoding
= GL_TRUE
;
982 extensions
->EXT_shader_integer_mix
= GL_TRUE
;
983 extensions
->ARB_arrays_of_arrays
= GL_TRUE
;
984 extensions
->MESA_shader_integer_functions
= GL_TRUE
;
986 /* Optional integer support for GLSL 1.2. */
987 if (screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
988 PIPE_SHADER_CAP_INTEGERS
) &&
989 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
990 PIPE_SHADER_CAP_INTEGERS
)) {
991 consts
->NativeIntegers
= GL_TRUE
;
993 extensions
->EXT_shader_integer_mix
= GL_TRUE
;
996 /* Integer textures make no sense before GLSL 1.30 */
997 extensions
->EXT_texture_integer
= GL_FALSE
;
1000 consts
->GLSLZeroInit
= options
->glsl_zero_init
;
1002 consts
->UniformBooleanTrue
= consts
->NativeIntegers
? ~0U : fui(1.0f
);
1004 /* Below are the cases which cannot be moved into tables easily. */
1006 if (screen
->get_shader_param(screen
, PIPE_SHADER_TESS_CTRL
,
1007 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
1008 extensions
->ARB_tessellation_shader
= GL_TRUE
;
1011 /* What this is really checking for is the ability to support multiple
1012 * invocations of a geometry shader. There is no separate cap for that, so
1013 * we check the GLSLVersion.
1015 if (consts
->GLSLVersion
>= 400 &&
1016 screen
->get_shader_param(screen
, PIPE_SHADER_GEOMETRY
,
1017 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
1018 extensions
->OES_geometry_shader
= GL_TRUE
;
1021 if (screen
->fence_finish
) {
1022 extensions
->ARB_sync
= GL_TRUE
;
1025 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
1026 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
1028 extensions
->OES_sample_variables
= extensions
->ARB_sample_shading
&&
1029 extensions
->ARB_gpu_shader5
;
1031 /* Maximum sample count. */
1033 static const enum pipe_format color_formats
[] = {
1034 PIPE_FORMAT_R8G8B8A8_UNORM
,
1035 PIPE_FORMAT_B8G8R8A8_UNORM
,
1036 PIPE_FORMAT_A8R8G8B8_UNORM
,
1037 PIPE_FORMAT_A8B8G8R8_UNORM
,
1039 static const enum pipe_format depth_formats
[] = {
1040 PIPE_FORMAT_Z16_UNORM
,
1041 PIPE_FORMAT_Z24X8_UNORM
,
1042 PIPE_FORMAT_X8Z24_UNORM
,
1043 PIPE_FORMAT_Z32_UNORM
,
1044 PIPE_FORMAT_Z32_FLOAT
1046 static const enum pipe_format int_formats
[] = {
1047 PIPE_FORMAT_R8G8B8A8_SINT
1049 static const enum pipe_format void_formats
[] = {
1053 consts
->MaxSamples
=
1054 get_max_samples_for_formats(screen
, ARRAY_SIZE(color_formats
),
1056 PIPE_BIND_RENDER_TARGET
);
1058 consts
->MaxImageSamples
=
1059 get_max_samples_for_formats(screen
, ARRAY_SIZE(color_formats
),
1061 PIPE_BIND_SHADER_IMAGE
);
1063 consts
->MaxColorTextureSamples
=
1064 get_max_samples_for_formats(screen
, ARRAY_SIZE(color_formats
),
1065 color_formats
, consts
->MaxSamples
,
1066 PIPE_BIND_SAMPLER_VIEW
);
1068 consts
->MaxDepthTextureSamples
=
1069 get_max_samples_for_formats(screen
, ARRAY_SIZE(depth_formats
),
1070 depth_formats
, consts
->MaxSamples
,
1071 PIPE_BIND_SAMPLER_VIEW
);
1073 consts
->MaxIntegerSamples
=
1074 get_max_samples_for_formats(screen
, ARRAY_SIZE(int_formats
),
1075 int_formats
, consts
->MaxSamples
,
1076 PIPE_BIND_SAMPLER_VIEW
);
1078 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
1079 consts
->MaxFramebufferSamples
=
1080 get_max_samples_for_formats(screen
, ARRAY_SIZE(void_formats
),
1082 PIPE_BIND_RENDER_TARGET
);
1085 if (consts
->MaxSamples
>= 2) {
1086 /* Real MSAA support */
1087 extensions
->EXT_framebuffer_multisample
= GL_TRUE
;
1088 extensions
->EXT_framebuffer_multisample_blit_scaled
= GL_TRUE
;
1090 else if (consts
->MaxSamples
> 0 &&
1091 screen
->get_param(screen
, PIPE_CAP_FAKE_SW_MSAA
)) {
1092 /* fake MSAA support */
1093 consts
->FakeSWMSAA
= GL_TRUE
;
1094 extensions
->EXT_framebuffer_multisample
= GL_TRUE
;
1095 extensions
->EXT_framebuffer_multisample_blit_scaled
= GL_TRUE
;
1096 extensions
->ARB_texture_multisample
= GL_TRUE
;
1099 if (consts
->MaxDualSourceDrawBuffers
> 0 &&
1100 !options
->disable_blend_func_extended
)
1101 extensions
->ARB_blend_func_extended
= GL_TRUE
;
1103 if (screen
->get_param(screen
, PIPE_CAP_QUERY_TIME_ELAPSED
) ||
1104 extensions
->ARB_timer_query
) {
1105 extensions
->EXT_timer_query
= GL_TRUE
;
1108 if (extensions
->ARB_transform_feedback2
&&
1109 extensions
->ARB_draw_instanced
) {
1110 extensions
->ARB_transform_feedback_instanced
= GL_TRUE
;
1112 if (options
->force_glsl_extensions_warn
)
1113 consts
->ForceGLSLExtensionsWarn
= 1;
1115 if (options
->disable_glsl_line_continuations
)
1116 consts
->DisableGLSLLineContinuations
= 1;
1118 if (options
->allow_glsl_extension_directive_midshader
)
1119 consts
->AllowGLSLExtensionDirectiveMidShader
= GL_TRUE
;
1121 consts
->MinMapBufferAlignment
=
1122 screen
->get_param(screen
, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT
);
1124 /* The OpenGL Compatibility profile requires arbitrary buffer swizzling. */
1125 if (api
== API_OPENGL_COMPAT
&&
1126 screen
->get_param(screen
, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY
))
1127 extensions
->ARB_texture_buffer_object
= GL_FALSE
;
1129 if (extensions
->ARB_texture_buffer_object
) {
1130 consts
->MaxTextureBufferSize
=
1131 _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE
),
1133 consts
->TextureBufferOffsetAlignment
=
1134 screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT
);
1136 if (consts
->TextureBufferOffsetAlignment
)
1137 extensions
->ARB_texture_buffer_range
= GL_TRUE
;
1139 init_format_extensions(screen
, extensions
, tbo_rgb32
,
1140 ARRAY_SIZE(tbo_rgb32
), PIPE_BUFFER
,
1141 PIPE_BIND_SAMPLER_VIEW
);
1144 extensions
->OES_texture_buffer
=
1145 extensions
->ARB_texture_buffer_object
&&
1146 extensions
->ARB_texture_buffer_range
&&
1147 extensions
->ARB_texture_buffer_object_rgb32
&&
1148 extensions
->ARB_shader_image_load_store
;
1150 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1151 * If the number of available texture indirections is very limited, then we
1152 * prefer to disable varying packing rather than run the risk of varying
1153 * packing preventing a shader from running.
1155 if (screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
1156 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
) <= 8) {
1157 /* We can't disable varying packing if transform feedback is available,
1158 * because transform feedback code assumes a packed varying layout.
1160 if (!extensions
->EXT_transform_feedback
)
1161 consts
->DisableVaryingPacking
= GL_TRUE
;
1164 consts
->MaxViewports
= screen
->get_param(screen
, PIPE_CAP_MAX_VIEWPORTS
);
1165 if (consts
->MaxViewports
>= 16) {
1166 if (consts
->GLSLVersion
>= 400) {
1167 consts
->ViewportBounds
.Min
= -32768.0;
1168 consts
->ViewportBounds
.Max
= 32767.0;
1170 consts
->ViewportBounds
.Min
= -16384.0;
1171 consts
->ViewportBounds
.Max
= 16383.0;
1173 extensions
->ARB_viewport_array
= GL_TRUE
;
1174 extensions
->ARB_fragment_layer_viewport
= GL_TRUE
;
1175 if (extensions
->AMD_vertex_shader_layer
)
1176 extensions
->AMD_vertex_shader_viewport_index
= GL_TRUE
;
1179 if (extensions
->AMD_vertex_shader_layer
&&
1180 extensions
->AMD_vertex_shader_viewport_index
&&
1181 screen
->get_param(screen
, PIPE_CAP_TGSI_TES_LAYER_VIEWPORT
))
1182 extensions
->ARB_shader_viewport_layer_array
= GL_TRUE
;
1184 /* ARB_framebuffer_no_attachments */
1185 if (screen
->get_param(screen
, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT
) &&
1186 ((consts
->MaxSamples
>= 4 && consts
->MaxFramebufferLayers
>= 2048) ||
1187 (consts
->MaxFramebufferSamples
>= consts
->MaxSamples
&&
1188 consts
->MaxFramebufferLayers
>= consts
->MaxArrayTextureLayers
)))
1189 extensions
->ARB_framebuffer_no_attachments
= GL_TRUE
;
1191 /* GL_ARB_ES3_compatibility.
1193 * Assume that ES3 is supported if GLSL 3.30 is supported.
1194 * (OpenGL 3.3 is a requirement for that extension.)
1196 if (consts
->GLSLVersion
>= 330 &&
1197 /* Requirements for ETC2 emulation. */
1198 screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8B8A8_UNORM
,
1200 PIPE_BIND_SAMPLER_VIEW
) &&
1201 screen
->is_format_supported(screen
, PIPE_FORMAT_B8G8R8A8_SRGB
,
1203 PIPE_BIND_SAMPLER_VIEW
) &&
1204 screen
->is_format_supported(screen
, PIPE_FORMAT_R16_UNORM
,
1206 PIPE_BIND_SAMPLER_VIEW
) &&
1207 screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16_UNORM
,
1209 PIPE_BIND_SAMPLER_VIEW
) &&
1210 screen
->is_format_supported(screen
, PIPE_FORMAT_R16_SNORM
,
1212 PIPE_BIND_SAMPLER_VIEW
) &&
1213 screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16_SNORM
,
1215 PIPE_BIND_SAMPLER_VIEW
)) {
1216 extensions
->ARB_ES3_compatibility
= GL_TRUE
;
1219 #ifdef HAVE_ST_VDPAU
1220 if (screen
->get_video_param
&&
1221 screen
->get_video_param(screen
, PIPE_VIDEO_PROFILE_UNKNOWN
,
1222 PIPE_VIDEO_ENTRYPOINT_BITSTREAM
,
1223 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED
)) {
1224 extensions
->NV_vdpau_interop
= GL_TRUE
;
1228 if (screen
->get_param(screen
, PIPE_CAP_DOUBLES
)) {
1229 extensions
->ARB_gpu_shader_fp64
= GL_TRUE
;
1230 extensions
->ARB_vertex_attrib_64bit
= GL_TRUE
;
1233 if ((ST_DEBUG
& DEBUG_GREMEDY
) &&
1234 screen
->get_param(screen
, PIPE_CAP_STRING_MARKER
))
1235 extensions
->GREMEDY_string_marker
= GL_TRUE
;
1237 if (screen
->get_param(screen
, PIPE_CAP_COMPUTE
)) {
1238 int compute_supported_irs
=
1239 screen
->get_shader_param(screen
, PIPE_SHADER_COMPUTE
,
1240 PIPE_SHADER_CAP_SUPPORTED_IRS
);
1241 if (compute_supported_irs
& (1 << PIPE_SHADER_IR_TGSI
)) {
1242 uint64_t grid_size
[3], block_size
[3];
1243 uint64_t max_local_size
, max_threads_per_block
;
1245 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1246 PIPE_COMPUTE_CAP_MAX_GRID_SIZE
, grid_size
);
1247 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1248 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE
, block_size
);
1249 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1250 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK
,
1251 &max_threads_per_block
);
1252 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1253 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE
,
1256 consts
->MaxComputeWorkGroupInvocations
= max_threads_per_block
;
1257 consts
->MaxComputeSharedMemorySize
= max_local_size
;
1259 for (i
= 0; i
< 3; i
++) {
1260 consts
->MaxComputeWorkGroupCount
[i
] = grid_size
[i
];
1261 consts
->MaxComputeWorkGroupSize
[i
] = block_size
[i
];
1264 extensions
->ARB_compute_shader
=
1265 extensions
->ARB_shader_image_load_store
&&
1266 extensions
->ARB_shader_atomic_counters
;
1268 if (extensions
->ARB_compute_shader
) {
1269 uint64_t max_variable_threads_per_block
= 0;
1271 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1272 PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK
,
1273 &max_variable_threads_per_block
);
1275 for (i
= 0; i
< 3; i
++) {
1276 /* Clamp the values to avoid having a local work group size
1277 * greater than the maximum number of invocations.
1279 consts
->MaxComputeVariableGroupSize
[i
] =
1280 MIN2(consts
->MaxComputeWorkGroupSize
[i
],
1281 max_variable_threads_per_block
);
1283 consts
->MaxComputeVariableGroupInvocations
=
1284 max_variable_threads_per_block
;
1286 extensions
->ARB_compute_variable_group_size
=
1287 max_variable_threads_per_block
> 0;
1292 if (extensions
->EXT_texture_filter_anisotropic
&&
1293 screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY
) >= 16.0)
1294 extensions
->ARB_texture_filter_anisotropic
= GL_TRUE
;
1296 extensions
->KHR_robustness
= extensions
->ARB_robust_buffer_access_behavior
;
1298 /* If we support ES 3.1, we support the ES3_1_compatibility ext. However
1299 * there's no clean way of telling whether we would support ES 3.1 from
1300 * here, so copy the condition from compute_version_es2 here. A lot of
1301 * these are redunant, but simpler to just have a (near-)exact copy here.
1303 extensions
->ARB_ES3_1_compatibility
=
1304 extensions
->ARB_ES3_compatibility
&&
1305 extensions
->ARB_arrays_of_arrays
&&
1306 extensions
->ARB_compute_shader
&&
1307 extensions
->ARB_draw_indirect
&&
1308 extensions
->ARB_explicit_uniform_location
&&
1309 extensions
->ARB_framebuffer_no_attachments
&&
1310 extensions
->ARB_shader_atomic_counters
&&
1311 extensions
->ARB_shader_image_load_store
&&
1312 extensions
->ARB_shader_image_size
&&
1313 extensions
->ARB_shader_storage_buffer_object
&&
1314 extensions
->ARB_shading_language_packing
&&
1315 extensions
->ARB_stencil_texturing
&&
1316 extensions
->ARB_texture_multisample
&&
1317 extensions
->ARB_gpu_shader5
&&
1318 extensions
->EXT_shader_integer_mix
;
1320 extensions
->OES_texture_cube_map_array
=
1321 extensions
->ARB_ES3_1_compatibility
&&
1322 extensions
->OES_geometry_shader
&&
1323 extensions
->ARB_texture_cube_map_array
;
1325 extensions
->OES_viewport_array
=
1326 extensions
->ARB_ES3_1_compatibility
&&
1327 extensions
->OES_geometry_shader
&&
1328 extensions
->ARB_viewport_array
;
1330 extensions
->OES_primitive_bounding_box
= extensions
->ARB_ES3_1_compatibility
;
1331 consts
->NoPrimitiveBoundingBoxOutput
= true;
1333 extensions
->ANDROID_extension_pack_es31a
=
1334 extensions
->KHR_texture_compression_astc_ldr
&&
1335 extensions
->KHR_blend_equation_advanced
&&
1336 extensions
->OES_sample_variables
&&
1337 extensions
->ARB_shader_image_load_store
&&
1338 extensions
->ARB_texture_stencil8
&&
1339 extensions
->ARB_texture_multisample
&&
1340 extensions
->OES_copy_image
&&
1341 extensions
->ARB_draw_buffers_blend
&&
1342 extensions
->OES_geometry_shader
&&
1343 extensions
->ARB_gpu_shader5
&&
1344 extensions
->OES_primitive_bounding_box
&&
1345 extensions
->ARB_tessellation_shader
&&
1346 extensions
->ARB_texture_border_clamp
&&
1347 extensions
->OES_texture_buffer
&&
1348 extensions
->OES_texture_cube_map_array
&&
1349 extensions
->EXT_texture_sRGB_decode
;
1351 /* Same deal as for ARB_ES3_1_compatibility - this has to be computed
1352 * before overall versions are selected. Also it's actually a subset of ES
1353 * 3.2, since it doesn't require ASTC or advanced blending.
1355 extensions
->ARB_ES3_2_compatibility
=
1356 extensions
->ARB_ES3_1_compatibility
&&
1357 extensions
->KHR_robustness
&&
1358 extensions
->ARB_copy_image
&&
1359 extensions
->ARB_draw_buffers_blend
&&
1360 extensions
->ARB_draw_elements_base_vertex
&&
1361 extensions
->OES_geometry_shader
&&
1362 extensions
->ARB_gpu_shader5
&&
1363 extensions
->ARB_sample_shading
&&
1364 extensions
->ARB_tessellation_shader
&&
1365 extensions
->ARB_texture_border_clamp
&&
1366 extensions
->OES_texture_buffer
&&
1367 extensions
->ARB_texture_cube_map_array
&&
1368 extensions
->ARB_texture_stencil8
&&
1369 extensions
->ARB_texture_multisample
;