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
;
83 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
),
87 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_3D_LEVELS
),
88 MAX_3D_TEXTURE_LEVELS
);
90 c
->MaxCubeTextureLevels
91 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS
),
92 MAX_CUBE_TEXTURE_LEVELS
);
95 = _min(1 << (c
->MaxTextureLevels
- 1), MAX_TEXTURE_RECT_SIZE
);
97 c
->MaxArrayTextureLayers
98 = screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
);
100 /* Define max viewport size and max renderbuffer size in terms of
101 * max texture size (note: max tex RECT size = max tex 2D size).
102 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
104 c
->MaxViewportWidth
=
105 c
->MaxViewportHeight
=
106 c
->MaxRenderbufferSize
= c
->MaxTextureRectSize
;
108 c
->MaxDrawBuffers
= c
->MaxColorAttachments
=
109 _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
110 1, MAX_DRAW_BUFFERS
);
112 c
->MaxDualSourceDrawBuffers
=
113 _clamp(screen
->get_param(screen
,
114 PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS
),
115 0, MAX_DRAW_BUFFERS
);
118 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_LINE_WIDTH
));
120 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_LINE_WIDTH_AA
));
123 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_POINT_WIDTH
));
125 _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAPF_MAX_POINT_WIDTH_AA
));
127 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
128 * for non-aa sizes, but we can go down to 0.0 for aa points.
130 c
->MinPointSize
= 1.0f
;
131 c
->MinPointSizeAA
= 0.0f
;
133 c
->MaxTextureMaxAnisotropy
=
135 screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_ANISOTROPY
));
137 c
->MaxTextureLodBias
=
138 screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS
);
140 c
->QuadsFollowProvokingVertexConvention
=
141 screen
->get_param(screen
,
142 PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION
);
144 c
->MaxUniformBlockSize
=
145 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
146 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE
);
147 if (c
->MaxUniformBlockSize
< 16384) {
151 for (sh
= 0; sh
< PIPE_SHADER_TYPES
; ++sh
) {
152 struct gl_shader_compiler_options
*options
;
153 struct gl_program_constants
*pc
;
156 case PIPE_SHADER_FRAGMENT
:
157 pc
= &c
->Program
[MESA_SHADER_FRAGMENT
];
158 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_FRAGMENT
];
160 case PIPE_SHADER_VERTEX
:
161 pc
= &c
->Program
[MESA_SHADER_VERTEX
];
162 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_VERTEX
];
164 case PIPE_SHADER_GEOMETRY
:
165 pc
= &c
->Program
[MESA_SHADER_GEOMETRY
];
166 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_GEOMETRY
];
168 case PIPE_SHADER_TESS_CTRL
:
169 pc
= &c
->Program
[MESA_SHADER_TESS_CTRL
];
170 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_TESS_CTRL
];
172 case PIPE_SHADER_TESS_EVAL
:
173 pc
= &c
->Program
[MESA_SHADER_TESS_EVAL
];
174 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_TESS_EVAL
];
176 case PIPE_SHADER_COMPUTE
:
177 pc
= &c
->Program
[MESA_SHADER_COMPUTE
];
178 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_COMPUTE
];
180 if (!screen
->get_param(screen
, PIPE_CAP_COMPUTE
))
183 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUPPORTED_IRS
);
184 if (!(supported_irs
& (1 << PIPE_SHADER_IR_TGSI
)))
191 pc
->MaxTextureImageUnits
=
192 _min(screen
->get_shader_param(screen
, sh
,
193 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS
),
194 MAX_TEXTURE_IMAGE_UNITS
);
196 pc
->MaxInstructions
=
197 pc
->MaxNativeInstructions
=
198 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
199 pc
->MaxAluInstructions
=
200 pc
->MaxNativeAluInstructions
=
201 screen
->get_shader_param(screen
, sh
,
202 PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS
);
203 pc
->MaxTexInstructions
=
204 pc
->MaxNativeTexInstructions
=
205 screen
->get_shader_param(screen
, sh
,
206 PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS
);
207 pc
->MaxTexIndirections
=
208 pc
->MaxNativeTexIndirections
=
209 screen
->get_shader_param(screen
, sh
,
210 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
);
212 pc
->MaxNativeAttribs
=
213 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
);
216 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEMPS
);
218 pc
->MaxNativeAddressRegs
= sh
== PIPE_SHADER_VERTEX
? 1 : 0;
220 pc
->MaxNativeParameters
=
221 screen
->get_shader_param(screen
, sh
,
222 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE
) / sizeof(float[4]);
223 pc
->MaxInputComponents
=
224 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
) * 4;
225 pc
->MaxOutputComponents
=
226 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_OUTPUTS
) * 4;
228 pc
->MaxUniformComponents
=
229 4 * MIN2(pc
->MaxNativeParameters
, MAX_UNIFORMS
);
231 pc
->MaxUniformBlocks
=
232 screen
->get_shader_param(screen
, sh
,
233 PIPE_SHADER_CAP_MAX_CONST_BUFFERS
);
234 if (pc
->MaxUniformBlocks
)
235 pc
->MaxUniformBlocks
-= 1; /* The first one is for ordinary uniforms. */
236 pc
->MaxUniformBlocks
= _min(pc
->MaxUniformBlocks
, MAX_UNIFORM_BUFFERS
);
238 pc
->MaxCombinedUniformComponents
= (pc
->MaxUniformComponents
+
239 c
->MaxUniformBlockSize
/ 4 *
240 pc
->MaxUniformBlocks
);
242 pc
->MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
243 pc
->MaxAtomicBuffers
= screen
->get_shader_param(
244 screen
, sh
, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS
) / 2;
245 pc
->MaxShaderStorageBlocks
= pc
->MaxAtomicBuffers
;
247 pc
->MaxImageUniforms
= screen
->get_shader_param(
248 screen
, sh
, PIPE_SHADER_CAP_MAX_SHADER_IMAGES
);
250 /* Gallium doesn't really care about local vs. env parameters so use the
253 pc
->MaxLocalParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_LOCAL_PARAMS
);
254 pc
->MaxEnvParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_ENV_PARAMS
);
256 if (screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_INTEGERS
)) {
257 pc
->LowInt
.RangeMin
= 31;
258 pc
->LowInt
.RangeMax
= 30;
259 pc
->LowInt
.Precision
= 0;
260 pc
->MediumInt
= pc
->HighInt
= pc
->LowInt
;
263 options
->EmitNoNoise
= TRUE
;
265 /* TODO: make these more fine-grained if anyone needs it */
266 options
->MaxIfDepth
=
267 screen
->get_shader_param(screen
, sh
,
268 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
269 options
->EmitNoLoops
=
270 !screen
->get_shader_param(screen
, sh
,
271 PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
272 options
->EmitNoFunctions
=
273 !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
274 options
->EmitNoMainReturn
=
275 !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
277 options
->EmitNoCont
=
278 !screen
->get_shader_param(screen
, sh
,
279 PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED
);
281 options
->EmitNoIndirectInput
=
282 !screen
->get_shader_param(screen
, sh
,
283 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR
);
284 options
->EmitNoIndirectOutput
=
285 !screen
->get_shader_param(screen
, sh
,
286 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR
);
287 options
->EmitNoIndirectTemp
=
288 !screen
->get_shader_param(screen
, sh
,
289 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR
);
290 options
->EmitNoIndirectUniform
=
291 !screen
->get_shader_param(screen
, sh
,
292 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR
);
294 if (pc
->MaxNativeInstructions
&&
295 (options
->EmitNoIndirectUniform
|| pc
->MaxUniformBlocks
< 12)) {
299 if (options
->EmitNoLoops
)
300 options
->MaxUnrollIterations
=
301 MIN2(screen
->get_shader_param(screen
, sh
,
302 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
),
305 options
->MaxUnrollIterations
=
306 screen
->get_shader_param(screen
, sh
,
307 PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT
);
309 options
->LowerClipDistance
= true;
310 options
->LowerBufferInterfaceBlocks
= true;
312 if (sh
== PIPE_SHADER_COMPUTE
)
313 options
->LowerShaderSharedVariables
= true;
316 c
->LowerTessLevel
= true;
318 c
->MaxCombinedTextureImageUnits
=
319 _min(c
->Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
320 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
+
321 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
+
322 c
->Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
323 c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
+
324 c
->Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
,
325 MAX_COMBINED_TEXTURE_IMAGE_UNITS
);
327 /* This depends on program constants. */
328 c
->MaxTextureCoordUnits
329 = _min(c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
,
330 MAX_TEXTURE_COORD_UNITS
);
333 _min(c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
,
334 c
->MaxTextureCoordUnits
);
336 c
->Program
[MESA_SHADER_VERTEX
].MaxAttribs
=
337 MIN2(c
->Program
[MESA_SHADER_VERTEX
].MaxAttribs
, 16);
339 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
340 * of inputs. It's always 2 colors + N generic inputs. */
341 c
->MaxVarying
= screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
342 PIPE_SHADER_CAP_MAX_INPUTS
);
343 c
->MaxVarying
= MIN2(c
->MaxVarying
, MAX_VARYING
);
344 c
->MaxGeometryOutputVertices
=
345 screen
->get_param(screen
, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES
);
346 c
->MaxGeometryTotalOutputComponents
=
347 screen
->get_param(screen
, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS
);
348 c
->MaxTessPatchComponents
=
349 MAX2(screen
->get_param(screen
, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS
),
352 c
->MinProgramTexelOffset
=
353 screen
->get_param(screen
, PIPE_CAP_MIN_TEXEL_OFFSET
);
354 c
->MaxProgramTexelOffset
=
355 screen
->get_param(screen
, PIPE_CAP_MAX_TEXEL_OFFSET
);
357 c
->MaxProgramTextureGatherComponents
=
358 screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS
);
359 c
->MinProgramTextureGatherOffset
=
360 screen
->get_param(screen
, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET
);
361 c
->MaxProgramTextureGatherOffset
=
362 screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET
);
364 c
->MaxTransformFeedbackBuffers
=
365 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
);
366 c
->MaxTransformFeedbackBuffers
= MIN2(c
->MaxTransformFeedbackBuffers
,
367 MAX_FEEDBACK_BUFFERS
);
368 c
->MaxTransformFeedbackSeparateComponents
=
369 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS
);
370 c
->MaxTransformFeedbackInterleavedComponents
=
371 screen
->get_param(screen
,
372 PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS
);
373 c
->MaxVertexStreams
=
374 MAX2(1, screen
->get_param(screen
, PIPE_CAP_MAX_VERTEX_STREAMS
));
376 /* The vertex stream must fit into pipe_stream_output_info::stream */
377 assert(c
->MaxVertexStreams
<= 4);
379 c
->MaxVertexAttribStride
380 = screen
->get_param(screen
, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE
);
382 c
->StripTextureBorder
= GL_TRUE
;
384 c
->GLSLSkipStrictMaxUniformLimitCheck
=
385 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS
);
387 c
->UniformBufferOffsetAlignment
=
388 screen
->get_param(screen
, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT
);
391 extensions
->ARB_uniform_buffer_object
= GL_TRUE
;
392 c
->MaxCombinedUniformBlocks
= c
->MaxUniformBufferBindings
=
393 c
->Program
[MESA_SHADER_VERTEX
].MaxUniformBlocks
+
394 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxUniformBlocks
+
395 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxUniformBlocks
+
396 c
->Program
[MESA_SHADER_GEOMETRY
].MaxUniformBlocks
+
397 c
->Program
[MESA_SHADER_FRAGMENT
].MaxUniformBlocks
+
398 c
->Program
[MESA_SHADER_COMPUTE
].MaxUniformBlocks
;
399 assert(c
->MaxCombinedUniformBlocks
<= MAX_COMBINED_UNIFORM_BUFFERS
);
402 c
->GLSLFragCoordIsSysVal
=
403 screen
->get_param(screen
, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL
);
404 c
->GLSLFrontFacingIsSysVal
=
405 screen
->get_param(screen
, PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL
);
407 c
->MaxAtomicBufferBindings
=
408 c
->Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
409 c
->MaxCombinedAtomicBuffers
=
410 c
->Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
+
411 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
+
412 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
+
413 c
->Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
+
414 c
->Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
415 assert(c
->MaxCombinedAtomicBuffers
<= MAX_COMBINED_ATOMIC_BUFFERS
);
417 if (c
->MaxCombinedAtomicBuffers
> 0) {
418 extensions
->ARB_shader_atomic_counters
= GL_TRUE
;
419 extensions
->ARB_shader_atomic_counter_ops
= GL_TRUE
;
422 c
->MaxCombinedShaderOutputResources
= c
->MaxDrawBuffers
;
423 c
->ShaderStorageBufferOffsetAlignment
=
424 screen
->get_param(screen
, PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT
);
425 if (c
->ShaderStorageBufferOffsetAlignment
) {
426 c
->MaxCombinedShaderStorageBlocks
= c
->MaxShaderStorageBufferBindings
=
427 c
->MaxCombinedAtomicBuffers
;
428 c
->MaxCombinedShaderOutputResources
+=
429 c
->MaxCombinedShaderStorageBlocks
;
430 c
->MaxShaderStorageBlockSize
= 1 << 27;
431 extensions
->ARB_shader_storage_buffer_object
= GL_TRUE
;
434 c
->MaxCombinedImageUniforms
=
435 c
->Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
+
436 c
->Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
+
437 c
->Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
+
438 c
->Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
+
439 c
->Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
+
440 c
->Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
;
441 c
->MaxCombinedShaderOutputResources
+= c
->MaxCombinedImageUniforms
;
442 c
->MaxImageUnits
= MAX_IMAGE_UNITS
;
443 c
->MaxImageSamples
= 0; /* XXX */
444 if (c
->MaxCombinedImageUniforms
) {
445 extensions
->ARB_shader_image_load_store
= GL_TRUE
;
446 extensions
->ARB_shader_image_size
= GL_TRUE
;
449 /* ARB_framebuffer_no_attachments */
450 c
->MaxFramebufferWidth
= c
->MaxViewportWidth
;
451 c
->MaxFramebufferHeight
= c
->MaxViewportHeight
;
452 /* NOTE: we cheat here a little by assuming that
453 * PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS has the same
454 * number of layers as we need, although we technically
455 * could have more the generality is not really useful
458 c
->MaxFramebufferLayers
=
459 screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
);
464 * Given a member \c x of struct gl_extensions, return offset of
467 #define o(x) offsetof(struct gl_extensions, x)
470 struct st_extension_cap_mapping
{
471 int extension_offset
;
475 struct st_extension_format_mapping
{
476 int extension_offset
[2];
477 enum pipe_format format
[32];
479 /* If TRUE, at least one format must be supported for the extensions to be
480 * advertised. If FALSE, all the formats must be supported. */
481 GLboolean need_at_least_one
;
485 * Enable extensions if certain pipe formats are supported by the driver.
486 * What extensions will be enabled and what formats must be supported is
487 * described by the array of st_extension_format_mapping.
489 * target and bind_flags are passed to is_format_supported.
492 init_format_extensions(struct pipe_screen
*screen
,
493 struct gl_extensions
*extensions
,
494 const struct st_extension_format_mapping
*mapping
,
495 unsigned num_mappings
,
496 enum pipe_texture_target target
,
499 GLboolean
*extension_table
= (GLboolean
*) extensions
;
502 int num_formats
= ARRAY_SIZE(mapping
->format
);
503 int num_ext
= ARRAY_SIZE(mapping
->extension_offset
);
505 for (i
= 0; i
< num_mappings
; i
++) {
506 int num_supported
= 0;
508 /* Examine each format in the list. */
509 for (j
= 0; j
< num_formats
&& mapping
[i
].format
[j
]; j
++) {
510 if (screen
->is_format_supported(screen
, mapping
[i
].format
[j
],
511 target
, 0, bind_flags
)) {
516 if (!num_supported
||
517 (!mapping
[i
].need_at_least_one
&& num_supported
!= j
)) {
521 /* Enable all extensions in the list. */
522 for (j
= 0; j
< num_ext
&& mapping
[i
].extension_offset
[j
]; j
++)
523 extension_table
[mapping
[i
].extension_offset
[j
]] = GL_TRUE
;
529 * Given a list of formats and bind flags, return the maximum number
530 * of samples supported by any of those formats.
533 get_max_samples_for_formats(struct pipe_screen
*screen
,
534 unsigned num_formats
,
535 enum pipe_format
*formats
,
536 unsigned max_samples
,
541 for (i
= max_samples
; i
> 0; --i
) {
542 for (f
= 0; f
< num_formats
; f
++) {
543 if (screen
->is_format_supported(screen
, formats
[f
],
544 PIPE_TEXTURE_2D
, i
, bind
)) {
554 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
555 * which GL extensions are supported.
556 * Quite a few extensions are always supported because they are standard
557 * features or can be built on top of other gallium features.
558 * Some fine tuning may still be needed.
560 void st_init_extensions(struct pipe_screen
*screen
,
561 struct gl_constants
*consts
,
562 struct gl_extensions
*extensions
,
563 struct st_config_options
*options
,
564 boolean has_lib_dxtc
)
567 GLboolean
*extension_table
= (GLboolean
*) extensions
;
569 static const struct st_extension_cap_mapping cap_mapping
[] = {
570 { o(ARB_base_instance
), PIPE_CAP_START_INSTANCE
},
571 { o(ARB_buffer_storage
), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT
},
572 { o(ARB_clear_texture
), PIPE_CAP_CLEAR_TEXTURE
},
573 { o(ARB_clip_control
), PIPE_CAP_CLIP_HALFZ
},
574 { o(ARB_color_buffer_float
), PIPE_CAP_VERTEX_COLOR_UNCLAMPED
},
575 { o(ARB_conditional_render_inverted
), PIPE_CAP_CONDITIONAL_RENDER_INVERTED
},
576 { o(ARB_copy_image
), PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS
},
577 { o(ARB_depth_clamp
), PIPE_CAP_DEPTH_CLIP_DISABLE
},
578 { o(ARB_depth_texture
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
579 { o(ARB_derivative_control
), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE
},
580 { o(ARB_draw_buffers_blend
), PIPE_CAP_INDEP_BLEND_FUNC
},
581 { o(ARB_draw_indirect
), PIPE_CAP_DRAW_INDIRECT
},
582 { o(ARB_draw_instanced
), PIPE_CAP_TGSI_INSTANCEID
},
583 { o(ARB_fragment_program_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
584 { o(ARB_framebuffer_object
), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES
},
585 { o(ARB_indirect_parameters
), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS
},
586 { o(ARB_instanced_arrays
), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR
},
587 { o(ARB_occlusion_query
), PIPE_CAP_OCCLUSION_QUERY
},
588 { o(ARB_occlusion_query2
), PIPE_CAP_OCCLUSION_QUERY
},
589 { o(ARB_pipeline_statistics_query
), PIPE_CAP_QUERY_PIPELINE_STATISTICS
},
590 { o(ARB_point_sprite
), PIPE_CAP_POINT_SPRITE
},
591 { o(ARB_query_buffer_object
), PIPE_CAP_QUERY_BUFFER_OBJECT
},
592 { o(ARB_robust_buffer_access_behavior
), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR
},
593 { o(ARB_sample_shading
), PIPE_CAP_SAMPLE_SHADING
},
594 { o(ARB_seamless_cube_map
), PIPE_CAP_SEAMLESS_CUBE_MAP
},
595 { o(ARB_shader_draw_parameters
), PIPE_CAP_DRAW_PARAMETERS
},
596 { o(ARB_shader_stencil_export
), PIPE_CAP_SHADER_STENCIL_EXPORT
},
597 { o(ARB_shader_texture_image_samples
), PIPE_CAP_TGSI_TXQS
},
598 { o(ARB_shader_texture_lod
), PIPE_CAP_SM3
},
599 { o(ARB_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
600 { o(ARB_texture_buffer_object
), PIPE_CAP_TEXTURE_BUFFER_OBJECTS
},
601 { o(ARB_texture_cube_map_array
), PIPE_CAP_CUBE_MAP_ARRAY
},
602 { o(ARB_texture_gather
), PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS
},
603 { o(ARB_texture_mirror_clamp_to_edge
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
604 { o(ARB_texture_multisample
), PIPE_CAP_TEXTURE_MULTISAMPLE
},
605 { o(ARB_texture_non_power_of_two
), PIPE_CAP_NPOT_TEXTURES
},
606 { o(ARB_texture_query_lod
), PIPE_CAP_TEXTURE_QUERY_LOD
},
607 { o(ARB_texture_view
), PIPE_CAP_SAMPLER_VIEW_TARGET
},
608 { o(ARB_timer_query
), PIPE_CAP_QUERY_TIMESTAMP
},
609 { o(ARB_transform_feedback2
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
610 { o(ARB_transform_feedback3
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
612 { o(EXT_blend_equation_separate
), PIPE_CAP_BLEND_EQUATION_SEPARATE
},
613 { o(EXT_depth_bounds_test
), PIPE_CAP_DEPTH_BOUNDS_TEST
},
614 { o(EXT_draw_buffers2
), PIPE_CAP_INDEP_BLEND_ENABLE
},
615 { o(EXT_polygon_offset_clamp
), PIPE_CAP_POLYGON_OFFSET_CLAMP
},
616 { o(EXT_stencil_two_side
), PIPE_CAP_TWO_SIDED_STENCIL
},
617 { o(EXT_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
618 { o(EXT_texture_filter_anisotropic
), PIPE_CAP_ANISOTROPIC_FILTER
},
619 { o(EXT_texture_mirror_clamp
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
620 { o(EXT_texture_swizzle
), PIPE_CAP_TEXTURE_SWIZZLE
},
621 { o(EXT_transform_feedback
), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
},
623 { o(AMD_pinned_memory
), PIPE_CAP_RESOURCE_FROM_USER_MEMORY
},
624 { o(ATI_meminfo
), PIPE_CAP_QUERY_MEMORY_INFO
},
625 { o(AMD_seamless_cubemap_per_texture
), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE
},
626 { o(ATI_separate_stencil
), PIPE_CAP_TWO_SIDED_STENCIL
},
627 { o(ATI_texture_mirror_once
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
628 { o(NV_conditional_render
), PIPE_CAP_CONDITIONAL_RENDER
},
629 { o(NV_primitive_restart
), PIPE_CAP_PRIMITIVE_RESTART
},
630 { o(NV_texture_barrier
), PIPE_CAP_TEXTURE_BARRIER
},
631 { o(NVX_gpu_memory_info
), PIPE_CAP_QUERY_MEMORY_INFO
},
632 /* GL_NV_point_sprite is not supported by gallium because we don't
633 * support the GL_POINT_SPRITE_R_MODE_NV option. */
635 { o(OES_standard_derivatives
), PIPE_CAP_SM3
},
636 { o(OES_texture_float_linear
), PIPE_CAP_TEXTURE_FLOAT_LINEAR
},
637 { o(OES_texture_half_float_linear
), PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR
},
640 /* Required: render target and sampler support */
641 static const struct st_extension_format_mapping rendertarget_mapping
[] = {
642 { { o(ARB_texture_float
) },
643 { PIPE_FORMAT_R32G32B32A32_FLOAT
,
644 PIPE_FORMAT_R16G16B16A16_FLOAT
} },
646 { { o(OES_texture_float
) },
647 { PIPE_FORMAT_R32G32B32A32_FLOAT
} },
649 { { o(OES_texture_half_float
) },
650 { PIPE_FORMAT_R16G16B16A16_FLOAT
} },
652 { { o(ARB_texture_rgb10_a2ui
) },
653 { PIPE_FORMAT_R10G10B10A2_UINT
,
654 PIPE_FORMAT_B10G10R10A2_UINT
},
655 GL_TRUE
}, /* at least one format must be supported */
657 { { o(EXT_framebuffer_sRGB
) },
658 { PIPE_FORMAT_A8B8G8R8_SRGB
,
659 PIPE_FORMAT_B8G8R8A8_SRGB
},
660 GL_TRUE
}, /* at least one format must be supported */
662 { { o(EXT_packed_float
) },
663 { PIPE_FORMAT_R11G11B10_FLOAT
} },
665 { { o(EXT_texture_integer
) },
666 { PIPE_FORMAT_R32G32B32A32_UINT
,
667 PIPE_FORMAT_R32G32B32A32_SINT
} },
669 { { o(ARB_texture_rg
) },
670 { PIPE_FORMAT_R8_UNORM
,
671 PIPE_FORMAT_R8G8_UNORM
} },
674 /* Required: depth stencil and sampler support */
675 static const struct st_extension_format_mapping depthstencil_mapping
[] = {
676 { { o(ARB_depth_buffer_float
) },
677 { PIPE_FORMAT_Z32_FLOAT
,
678 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
} },
681 /* Required: sampler support */
682 static const struct st_extension_format_mapping texture_mapping
[] = {
683 { { o(ARB_texture_compression_rgtc
) },
684 { PIPE_FORMAT_RGTC1_UNORM
,
685 PIPE_FORMAT_RGTC1_SNORM
,
686 PIPE_FORMAT_RGTC2_UNORM
,
687 PIPE_FORMAT_RGTC2_SNORM
} },
689 { { o(EXT_texture_compression_latc
) },
690 { PIPE_FORMAT_LATC1_UNORM
,
691 PIPE_FORMAT_LATC1_SNORM
,
692 PIPE_FORMAT_LATC2_UNORM
,
693 PIPE_FORMAT_LATC2_SNORM
} },
695 { { o(EXT_texture_compression_s3tc
),
696 o(ANGLE_texture_compression_dxt
) },
697 { PIPE_FORMAT_DXT1_RGB
,
698 PIPE_FORMAT_DXT1_RGBA
,
699 PIPE_FORMAT_DXT3_RGBA
,
700 PIPE_FORMAT_DXT5_RGBA
} },
702 { { o(ARB_texture_compression_bptc
) },
703 { PIPE_FORMAT_BPTC_RGBA_UNORM
,
704 PIPE_FORMAT_BPTC_SRGBA
,
705 PIPE_FORMAT_BPTC_RGB_FLOAT
,
706 PIPE_FORMAT_BPTC_RGB_UFLOAT
} },
708 { { o(KHR_texture_compression_astc_ldr
) },
709 { PIPE_FORMAT_ASTC_4x4
,
710 PIPE_FORMAT_ASTC_5x4
,
711 PIPE_FORMAT_ASTC_5x5
,
712 PIPE_FORMAT_ASTC_6x5
,
713 PIPE_FORMAT_ASTC_6x6
,
714 PIPE_FORMAT_ASTC_8x5
,
715 PIPE_FORMAT_ASTC_8x6
,
716 PIPE_FORMAT_ASTC_8x8
,
717 PIPE_FORMAT_ASTC_10x5
,
718 PIPE_FORMAT_ASTC_10x6
,
719 PIPE_FORMAT_ASTC_10x8
,
720 PIPE_FORMAT_ASTC_10x10
,
721 PIPE_FORMAT_ASTC_12x10
,
722 PIPE_FORMAT_ASTC_12x12
,
723 PIPE_FORMAT_ASTC_4x4_SRGB
,
724 PIPE_FORMAT_ASTC_5x4_SRGB
,
725 PIPE_FORMAT_ASTC_5x5_SRGB
,
726 PIPE_FORMAT_ASTC_6x5_SRGB
,
727 PIPE_FORMAT_ASTC_6x6_SRGB
,
728 PIPE_FORMAT_ASTC_8x5_SRGB
,
729 PIPE_FORMAT_ASTC_8x6_SRGB
,
730 PIPE_FORMAT_ASTC_8x8_SRGB
,
731 PIPE_FORMAT_ASTC_10x5_SRGB
,
732 PIPE_FORMAT_ASTC_10x6_SRGB
,
733 PIPE_FORMAT_ASTC_10x8_SRGB
,
734 PIPE_FORMAT_ASTC_10x10_SRGB
,
735 PIPE_FORMAT_ASTC_12x10_SRGB
,
736 PIPE_FORMAT_ASTC_12x12_SRGB
} },
738 { { o(EXT_texture_shared_exponent
) },
739 { PIPE_FORMAT_R9G9B9E5_FLOAT
} },
741 { { o(EXT_texture_snorm
) },
742 { PIPE_FORMAT_R8G8B8A8_SNORM
} },
744 { { o(EXT_texture_sRGB
),
745 o(EXT_texture_sRGB_decode
) },
746 { PIPE_FORMAT_A8B8G8R8_SRGB
,
747 PIPE_FORMAT_B8G8R8A8_SRGB
},
748 GL_TRUE
}, /* at least one format must be supported */
750 { { o(ATI_texture_compression_3dc
) },
751 { PIPE_FORMAT_LATC2_UNORM
} },
753 { { o(MESA_ycbcr_texture
) },
756 GL_TRUE
}, /* at least one format must be supported */
758 { { o(OES_compressed_ETC1_RGB8_texture
) },
759 { PIPE_FORMAT_ETC1_RGB8
,
760 PIPE_FORMAT_R8G8B8A8_UNORM
},
761 GL_TRUE
}, /* at least one format must be supported */
763 { { o(ARB_stencil_texturing
),
764 o(ARB_texture_stencil8
) },
765 { PIPE_FORMAT_X24S8_UINT
,
766 PIPE_FORMAT_S8X24_UINT
},
767 GL_TRUE
}, /* at least one format must be supported */
770 /* Required: vertex fetch support. */
771 static const struct st_extension_format_mapping vertex_mapping
[] = {
772 { { o(ARB_vertex_type_2_10_10_10_rev
) },
773 { PIPE_FORMAT_R10G10B10A2_UNORM
,
774 PIPE_FORMAT_B10G10R10A2_UNORM
,
775 PIPE_FORMAT_R10G10B10A2_SNORM
,
776 PIPE_FORMAT_B10G10R10A2_SNORM
,
777 PIPE_FORMAT_R10G10B10A2_USCALED
,
778 PIPE_FORMAT_B10G10R10A2_USCALED
,
779 PIPE_FORMAT_R10G10B10A2_SSCALED
,
780 PIPE_FORMAT_B10G10R10A2_SSCALED
} },
781 { { o(ARB_vertex_type_10f_11f_11f_rev
) },
782 { PIPE_FORMAT_R11G11B10_FLOAT
} },
785 static const struct st_extension_format_mapping tbo_rgb32
[] = {
786 { {o(ARB_texture_buffer_object_rgb32
) },
787 { PIPE_FORMAT_R32G32B32_FLOAT
,
788 PIPE_FORMAT_R32G32B32_UINT
,
789 PIPE_FORMAT_R32G32B32_SINT
,
794 * Extensions that are supported by all Gallium drivers:
796 extensions
->ARB_ES2_compatibility
= GL_TRUE
;
797 extensions
->ARB_draw_elements_base_vertex
= GL_TRUE
;
798 extensions
->ARB_explicit_attrib_location
= GL_TRUE
;
799 extensions
->ARB_explicit_uniform_location
= GL_TRUE
;
800 extensions
->ARB_fragment_coord_conventions
= GL_TRUE
;
801 extensions
->ARB_fragment_program
= GL_TRUE
;
802 extensions
->ARB_fragment_shader
= GL_TRUE
;
803 extensions
->ARB_half_float_vertex
= GL_TRUE
;
804 extensions
->ARB_internalformat_query
= GL_TRUE
;
805 extensions
->ARB_internalformat_query2
= GL_TRUE
;
806 extensions
->ARB_map_buffer_range
= GL_TRUE
;
807 extensions
->ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
808 extensions
->ARB_texture_cube_map
= GL_TRUE
;
809 extensions
->ARB_texture_env_combine
= GL_TRUE
;
810 extensions
->ARB_texture_env_crossbar
= GL_TRUE
;
811 extensions
->ARB_texture_env_dot3
= GL_TRUE
;
812 extensions
->ARB_vertex_program
= GL_TRUE
;
813 extensions
->ARB_vertex_shader
= GL_TRUE
;
815 extensions
->EXT_blend_color
= GL_TRUE
;
816 extensions
->EXT_blend_func_separate
= GL_TRUE
;
817 extensions
->EXT_blend_minmax
= GL_TRUE
;
818 extensions
->EXT_gpu_program_parameters
= GL_TRUE
;
819 extensions
->EXT_pixel_buffer_object
= GL_TRUE
;
820 extensions
->EXT_point_parameters
= GL_TRUE
;
821 extensions
->EXT_provoking_vertex
= GL_TRUE
;
823 extensions
->EXT_texture_env_dot3
= GL_TRUE
;
824 extensions
->EXT_vertex_array_bgra
= GL_TRUE
;
826 extensions
->ATI_fragment_shader
= GL_TRUE
;
827 extensions
->ATI_texture_env_combine3
= GL_TRUE
;
829 extensions
->MESA_pack_invert
= GL_TRUE
;
831 extensions
->NV_fog_distance
= GL_TRUE
;
832 extensions
->NV_texture_env_combine4
= GL_TRUE
;
833 extensions
->NV_texture_rectangle
= GL_TRUE
;
835 extensions
->OES_EGL_image
= GL_TRUE
;
836 extensions
->OES_EGL_image_external
= GL_TRUE
;
837 extensions
->OES_draw_texture
= GL_TRUE
;
839 /* Expose the extensions which directly correspond to gallium caps. */
840 for (i
= 0; i
< ARRAY_SIZE(cap_mapping
); i
++) {
841 if (screen
->get_param(screen
, cap_mapping
[i
].cap
)) {
842 extension_table
[cap_mapping
[i
].extension_offset
] = GL_TRUE
;
846 /* Expose the extensions which directly correspond to gallium formats. */
847 init_format_extensions(screen
, extensions
, rendertarget_mapping
,
848 ARRAY_SIZE(rendertarget_mapping
), PIPE_TEXTURE_2D
,
849 PIPE_BIND_RENDER_TARGET
| PIPE_BIND_SAMPLER_VIEW
);
850 init_format_extensions(screen
, extensions
, depthstencil_mapping
,
851 ARRAY_SIZE(depthstencil_mapping
), PIPE_TEXTURE_2D
,
852 PIPE_BIND_DEPTH_STENCIL
| PIPE_BIND_SAMPLER_VIEW
);
853 init_format_extensions(screen
, extensions
, texture_mapping
,
854 ARRAY_SIZE(texture_mapping
), PIPE_TEXTURE_2D
,
855 PIPE_BIND_SAMPLER_VIEW
);
856 init_format_extensions(screen
, extensions
, vertex_mapping
,
857 ARRAY_SIZE(vertex_mapping
), PIPE_BUFFER
,
858 PIPE_BIND_VERTEX_BUFFER
);
860 /* Figure out GLSL support and set GLSLVersion to it. */
861 consts
->GLSLVersion
= screen
->get_param(screen
, PIPE_CAP_GLSL_FEATURE_LEVEL
);
863 _mesa_override_glsl_version(consts
);
865 if (options
->force_glsl_version
> 0 &&
866 options
->force_glsl_version
<= consts
->GLSLVersion
) {
867 consts
->ForceGLSLVersion
= options
->force_glsl_version
;
870 if (consts
->GLSLVersion
>= 400)
871 extensions
->ARB_gpu_shader5
= GL_TRUE
;
872 if (consts
->GLSLVersion
>= 410)
873 extensions
->ARB_shader_precision
= GL_TRUE
;
875 /* This extension needs full OpenGL 3.2, but we don't know if that's
876 * supported at this point. Only check the GLSL version. */
877 if (consts
->GLSLVersion
>= 150 &&
878 screen
->get_param(screen
, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT
)) {
879 extensions
->AMD_vertex_shader_layer
= GL_TRUE
;
882 if (consts
->GLSLVersion
>= 130) {
883 consts
->NativeIntegers
= GL_TRUE
;
884 consts
->MaxClipPlanes
= 8;
886 if (screen
->get_param(screen
, PIPE_CAP_VERTEXID_NOBASE
)) {
887 consts
->VertexID_is_zero_based
= GL_TRUE
;
890 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
891 extensions
->ARB_conservative_depth
= GL_TRUE
;
892 extensions
->ARB_shading_language_packing
= GL_TRUE
;
893 extensions
->OES_depth_texture_cube_map
= GL_TRUE
;
894 extensions
->ARB_shading_language_420pack
= GL_TRUE
;
895 extensions
->ARB_texture_query_levels
= GL_TRUE
;
896 extensions
->ARB_shader_subroutine
= GL_TRUE
;
898 if (!options
->disable_shader_bit_encoding
) {
899 extensions
->ARB_shader_bit_encoding
= GL_TRUE
;
902 extensions
->EXT_shader_integer_mix
= GL_TRUE
;
903 extensions
->ARB_arrays_of_arrays
= GL_TRUE
;
905 /* Optional integer support for GLSL 1.2. */
906 if (screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
907 PIPE_SHADER_CAP_INTEGERS
) &&
908 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
909 PIPE_SHADER_CAP_INTEGERS
)) {
910 consts
->NativeIntegers
= GL_TRUE
;
912 extensions
->EXT_shader_integer_mix
= GL_TRUE
;
915 /* Integer textures make no sense before GLSL 1.30 */
916 extensions
->EXT_texture_integer
= GL_FALSE
;
919 consts
->UniformBooleanTrue
= consts
->NativeIntegers
? ~0U : fui(1.0f
);
921 /* Below are the cases which cannot be moved into tables easily. */
923 if (!has_lib_dxtc
&& !options
->force_s3tc_enable
) {
924 extensions
->EXT_texture_compression_s3tc
= GL_FALSE
;
925 extensions
->ANGLE_texture_compression_dxt
= GL_FALSE
;
928 if (screen
->get_shader_param(screen
, PIPE_SHADER_TESS_CTRL
,
929 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
930 extensions
->ARB_tessellation_shader
= GL_TRUE
;
933 if (screen
->fence_finish
) {
934 extensions
->ARB_sync
= GL_TRUE
;
937 /* Needs PIPE_CAP_SAMPLE_SHADING + all the sample-related bits of
938 * ARB_gpu_shader5. This enables all the per-sample shading ES extensions.
940 extensions
->OES_sample_variables
= extensions
->ARB_sample_shading
&&
941 extensions
->ARB_gpu_shader5
;
943 /* If we don't have native ETC2 support, we don't keep track of the
944 * original ETC2 data. This is necessary to be able to copy images between
945 * compatible view classes.
947 if (extensions
->ARB_copy_image
&& screen
->is_format_supported(
948 screen
, PIPE_FORMAT_ETC2_RGB8
,
950 PIPE_BIND_SAMPLER_VIEW
)) {
951 extensions
->OES_copy_image
= GL_TRUE
;
954 /* Maximum sample count. */
956 enum pipe_format color_formats
[] = {
957 PIPE_FORMAT_R8G8B8A8_UNORM
,
958 PIPE_FORMAT_B8G8R8A8_UNORM
,
959 PIPE_FORMAT_A8R8G8B8_UNORM
,
960 PIPE_FORMAT_A8B8G8R8_UNORM
,
962 enum pipe_format depth_formats
[] = {
963 PIPE_FORMAT_Z16_UNORM
,
964 PIPE_FORMAT_Z24X8_UNORM
,
965 PIPE_FORMAT_X8Z24_UNORM
,
966 PIPE_FORMAT_Z32_UNORM
,
967 PIPE_FORMAT_Z32_FLOAT
969 enum pipe_format int_formats
[] = {
970 PIPE_FORMAT_R8G8B8A8_SINT
972 enum pipe_format void_formats
[] = {
977 get_max_samples_for_formats(screen
, ARRAY_SIZE(color_formats
),
979 PIPE_BIND_RENDER_TARGET
);
981 consts
->MaxColorTextureSamples
=
982 get_max_samples_for_formats(screen
, ARRAY_SIZE(color_formats
),
983 color_formats
, consts
->MaxSamples
,
984 PIPE_BIND_SAMPLER_VIEW
);
986 consts
->MaxDepthTextureSamples
=
987 get_max_samples_for_formats(screen
, ARRAY_SIZE(depth_formats
),
988 depth_formats
, consts
->MaxSamples
,
989 PIPE_BIND_SAMPLER_VIEW
);
991 consts
->MaxIntegerSamples
=
992 get_max_samples_for_formats(screen
, ARRAY_SIZE(int_formats
),
993 int_formats
, consts
->MaxSamples
,
994 PIPE_BIND_SAMPLER_VIEW
);
996 /* ARB_framebuffer_no_attachments, assume max no. of samples 32 */
997 consts
->MaxFramebufferSamples
=
998 get_max_samples_for_formats(screen
, ARRAY_SIZE(void_formats
),
1000 PIPE_BIND_RENDER_TARGET
);
1002 if (consts
->MaxSamples
== 1) {
1003 /* one sample doesn't really make sense */
1004 consts
->MaxSamples
= 0;
1006 else if (consts
->MaxSamples
>= 2) {
1007 extensions
->EXT_framebuffer_multisample
= GL_TRUE
;
1008 extensions
->EXT_framebuffer_multisample_blit_scaled
= GL_TRUE
;
1011 if (consts
->MaxSamples
== 0 && screen
->get_param(screen
, PIPE_CAP_FAKE_SW_MSAA
)) {
1012 consts
->FakeSWMSAA
= GL_TRUE
;
1013 extensions
->EXT_framebuffer_multisample
= GL_TRUE
;
1014 extensions
->EXT_framebuffer_multisample_blit_scaled
= GL_TRUE
;
1015 extensions
->ARB_texture_multisample
= GL_TRUE
;
1018 if (consts
->MaxDualSourceDrawBuffers
> 0 &&
1019 !options
->disable_blend_func_extended
)
1020 extensions
->ARB_blend_func_extended
= GL_TRUE
;
1022 if (screen
->get_param(screen
, PIPE_CAP_QUERY_TIME_ELAPSED
) ||
1023 extensions
->ARB_timer_query
) {
1024 extensions
->EXT_timer_query
= GL_TRUE
;
1027 if (extensions
->ARB_transform_feedback2
&&
1028 extensions
->ARB_draw_instanced
) {
1029 extensions
->ARB_transform_feedback_instanced
= GL_TRUE
;
1031 if (options
->force_glsl_extensions_warn
)
1032 consts
->ForceGLSLExtensionsWarn
= 1;
1034 if (options
->disable_glsl_line_continuations
)
1035 consts
->DisableGLSLLineContinuations
= 1;
1037 if (options
->allow_glsl_extension_directive_midshader
)
1038 consts
->AllowGLSLExtensionDirectiveMidShader
= GL_TRUE
;
1040 consts
->MinMapBufferAlignment
=
1041 screen
->get_param(screen
, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT
);
1043 if (extensions
->ARB_texture_buffer_object
) {
1044 consts
->MaxTextureBufferSize
=
1045 _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE
),
1047 consts
->TextureBufferOffsetAlignment
=
1048 screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT
);
1050 if (consts
->TextureBufferOffsetAlignment
)
1051 extensions
->ARB_texture_buffer_range
= GL_TRUE
;
1053 init_format_extensions(screen
, extensions
, tbo_rgb32
,
1054 ARRAY_SIZE(tbo_rgb32
), PIPE_BUFFER
,
1055 PIPE_BIND_SAMPLER_VIEW
);
1058 extensions
->OES_texture_buffer
=
1059 extensions
->ARB_texture_buffer_object
&&
1060 extensions
->ARB_texture_buffer_range
&&
1061 extensions
->ARB_texture_buffer_object_rgb32
&&
1062 extensions
->ARB_shader_image_load_store
;
1064 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
1065 * If the number of available texture indirections is very limited, then we
1066 * prefer to disable varying packing rather than run the risk of varying
1067 * packing preventing a shader from running.
1069 if (screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
1070 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
) <= 8) {
1071 /* We can't disable varying packing if transform feedback is available,
1072 * because transform feedback code assumes a packed varying layout.
1074 if (!extensions
->EXT_transform_feedback
)
1075 consts
->DisableVaryingPacking
= GL_TRUE
;
1078 consts
->MaxViewports
= screen
->get_param(screen
, PIPE_CAP_MAX_VIEWPORTS
);
1079 if (consts
->MaxViewports
>= 16) {
1080 if (consts
->GLSLVersion
>= 400) {
1081 consts
->ViewportBounds
.Min
= -32768.0;
1082 consts
->ViewportBounds
.Max
= 32767.0;
1084 consts
->ViewportBounds
.Min
= -16384.0;
1085 consts
->ViewportBounds
.Max
= 16383.0;
1087 extensions
->ARB_viewport_array
= GL_TRUE
;
1088 extensions
->ARB_fragment_layer_viewport
= GL_TRUE
;
1089 if (extensions
->AMD_vertex_shader_layer
)
1090 extensions
->AMD_vertex_shader_viewport_index
= GL_TRUE
;
1093 /* ARB_framebuffer_no_attachments */
1094 if (screen
->get_param(screen
, PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT
) &&
1095 ((consts
->MaxSamples
>= 4 && consts
->MaxFramebufferLayers
>= 2048) ||
1096 (consts
->MaxFramebufferSamples
>= consts
->MaxSamples
&&
1097 consts
->MaxFramebufferLayers
>= consts
->MaxArrayTextureLayers
)))
1098 extensions
->ARB_framebuffer_no_attachments
= GL_TRUE
;
1100 /* GL_ARB_ES3_compatibility.
1102 * Assume that ES3 is supported if GLSL 3.30 is supported.
1103 * (OpenGL 3.3 is a requirement for that extension.)
1105 if (consts
->GLSLVersion
>= 330 &&
1106 /* Requirements for ETC2 emulation. */
1107 screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8B8A8_UNORM
,
1109 PIPE_BIND_SAMPLER_VIEW
) &&
1110 screen
->is_format_supported(screen
, PIPE_FORMAT_B8G8R8A8_SRGB
,
1112 PIPE_BIND_SAMPLER_VIEW
) &&
1113 screen
->is_format_supported(screen
, PIPE_FORMAT_R16_UNORM
,
1115 PIPE_BIND_SAMPLER_VIEW
) &&
1116 screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16_UNORM
,
1118 PIPE_BIND_SAMPLER_VIEW
) &&
1119 screen
->is_format_supported(screen
, PIPE_FORMAT_R16_SNORM
,
1121 PIPE_BIND_SAMPLER_VIEW
) &&
1122 screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16_SNORM
,
1124 PIPE_BIND_SAMPLER_VIEW
)) {
1125 extensions
->ARB_ES3_compatibility
= GL_TRUE
;
1128 #ifdef HAVE_ST_VDPAU
1129 if (screen
->get_video_param
&&
1130 screen
->get_video_param(screen
, PIPE_VIDEO_PROFILE_UNKNOWN
,
1131 PIPE_VIDEO_ENTRYPOINT_BITSTREAM
,
1132 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED
)) {
1133 extensions
->NV_vdpau_interop
= GL_TRUE
;
1137 if (screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
1138 PIPE_SHADER_CAP_DOUBLES
) &&
1139 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
1140 PIPE_SHADER_CAP_DOUBLES
)) {
1141 extensions
->ARB_gpu_shader_fp64
= GL_TRUE
;
1142 extensions
->ARB_vertex_attrib_64bit
= GL_TRUE
;
1145 if ((ST_DEBUG
& DEBUG_GREMEDY
) &&
1146 screen
->get_param(screen
, PIPE_CAP_STRING_MARKER
))
1147 extensions
->GREMEDY_string_marker
= GL_TRUE
;
1149 if (screen
->get_param(screen
, PIPE_CAP_COMPUTE
)) {
1150 int compute_supported_irs
=
1151 screen
->get_shader_param(screen
, PIPE_SHADER_COMPUTE
,
1152 PIPE_SHADER_CAP_SUPPORTED_IRS
);
1153 if (compute_supported_irs
& (1 << PIPE_SHADER_IR_TGSI
)) {
1154 uint64_t grid_size
[3], block_size
[3];
1156 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1157 PIPE_COMPUTE_CAP_MAX_GRID_SIZE
, grid_size
);
1158 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1159 PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE
, block_size
);
1160 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1161 PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK
,
1162 &consts
->MaxComputeWorkGroupInvocations
);
1163 screen
->get_compute_param(screen
, PIPE_SHADER_IR_TGSI
,
1164 PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE
,
1165 &consts
->MaxComputeSharedMemorySize
);
1167 for (i
= 0; i
< 3; i
++) {
1168 consts
->MaxComputeWorkGroupCount
[i
] = grid_size
[i
];
1169 consts
->MaxComputeWorkGroupSize
[i
] = block_size
[i
];
1171 /* XXX: ARB_compute_shader is not enabled by default because images
1172 * support is still not implemented yet. */
1173 /* extensions->ARB_compute_shader = true; */