1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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"
38 #include "st_context.h"
39 #include "st_extensions.h"
40 #include "st_format.h"
42 static int _min(int a
, int b
)
44 return (a
< b
) ? a
: b
;
47 static float _maxf(float a
, float b
)
49 return (a
> b
) ? a
: b
;
52 static int _clamp(int a
, int min
, int max
)
64 * Query driver to get implementation limits.
65 * Note that we have to limit/clamp against Mesa's internal limits too.
67 void st_init_limits(struct st_context
*st
)
69 struct pipe_screen
*screen
= st
->pipe
->screen
;
70 struct gl_constants
*c
= &st
->ctx
->Const
;
72 boolean can_ubo
= TRUE
;
75 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
),
79 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_3D_LEVELS
),
80 MAX_3D_TEXTURE_LEVELS
);
82 c
->MaxCubeTextureLevels
83 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS
),
84 MAX_CUBE_TEXTURE_LEVELS
);
87 = _min(1 << (c
->MaxTextureLevels
- 1), MAX_TEXTURE_RECT_SIZE
);
89 c
->MaxArrayTextureLayers
90 = screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
);
92 c
->MaxCombinedTextureImageUnits
93 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_COMBINED_SAMPLERS
),
94 MAX_COMBINED_TEXTURE_IMAGE_UNITS
);
96 /* Define max viewport size and max renderbuffer size in terms of
97 * max texture size (note: max tex RECT size = max tex 2D size).
98 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
100 c
->MaxViewportWidth
=
101 c
->MaxViewportHeight
=
102 c
->MaxRenderbufferSize
= c
->MaxTextureRectSize
;
105 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
106 1, MAX_DRAW_BUFFERS
);
108 c
->MaxDualSourceDrawBuffers
109 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS
),
110 0, MAX_DRAW_BUFFERS
);
113 = _maxf(1.0f
, screen
->get_paramf(screen
,
114 PIPE_CAPF_MAX_LINE_WIDTH
));
116 = _maxf(1.0f
, screen
->get_paramf(screen
,
117 PIPE_CAPF_MAX_LINE_WIDTH_AA
));
120 = _maxf(1.0f
, screen
->get_paramf(screen
,
121 PIPE_CAPF_MAX_POINT_WIDTH
));
123 = _maxf(1.0f
, screen
->get_paramf(screen
,
124 PIPE_CAPF_MAX_POINT_WIDTH_AA
));
125 /* called after _mesa_create_context/_mesa_init_point, fix default user
126 * settable max point size up
128 st
->ctx
->Point
.MaxSize
= MAX2(c
->MaxPointSize
, c
->MaxPointSizeAA
);
129 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
130 * for non-aa sizes, but we can go down to 0.0 for aa points.
132 c
->MinPointSize
= 1.0f
;
133 c
->MinPointSizeAA
= 0.0f
;
135 c
->MaxTextureMaxAnisotropy
136 = _maxf(2.0f
, screen
->get_paramf(screen
,
137 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY
));
140 = screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS
);
143 = CLAMP(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
144 1, MAX_DRAW_BUFFERS
);
146 c
->QuadsFollowProvokingVertexConvention
= screen
->get_param(
147 screen
, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION
);
149 c
->MaxUniformBlockSize
=
150 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
151 PIPE_SHADER_CAP_MAX_CONSTS
) * 16;
152 if (c
->MaxUniformBlockSize
< 16384) {
156 for (sh
= 0; sh
< MESA_SHADER_TYPES
; ++sh
) {
157 struct gl_shader_compiler_options
*options
=
158 &st
->ctx
->ShaderCompilerOptions
[sh
];
159 struct gl_program_constants
*pc
;
162 case PIPE_SHADER_FRAGMENT
:
163 pc
= &c
->FragmentProgram
;
165 case PIPE_SHADER_VERTEX
:
166 pc
= &c
->VertexProgram
;
168 case PIPE_SHADER_GEOMETRY
:
169 pc
= &c
->GeometryProgram
;
176 pc
->MaxTextureImageUnits
=
177 _min(screen
->get_shader_param(screen
, sh
,
178 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS
),
179 MAX_TEXTURE_IMAGE_UNITS
);
181 pc
->MaxInstructions
= pc
->MaxNativeInstructions
=
182 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
183 pc
->MaxAluInstructions
= pc
->MaxNativeAluInstructions
=
184 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS
);
185 pc
->MaxTexInstructions
= pc
->MaxNativeTexInstructions
=
186 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS
);
187 pc
->MaxTexIndirections
= pc
->MaxNativeTexIndirections
=
188 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
);
189 pc
->MaxAttribs
= pc
->MaxNativeAttribs
=
190 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
);
191 pc
->MaxTemps
= pc
->MaxNativeTemps
=
192 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEMPS
);
193 pc
->MaxAddressRegs
= pc
->MaxNativeAddressRegs
=
194 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ADDRS
);
195 pc
->MaxParameters
= pc
->MaxNativeParameters
=
196 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONSTS
);
198 pc
->MaxUniformComponents
= 4 * MIN2(pc
->MaxNativeParameters
, MAX_UNIFORMS
);
200 pc
->MaxUniformBlocks
=
201 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONST_BUFFERS
);
202 if (pc
->MaxUniformBlocks
)
203 pc
->MaxUniformBlocks
-= 1; /* The first one is for ordinary uniforms. */
205 pc
->MaxCombinedUniformComponents
= (pc
->MaxUniformComponents
+
206 c
->MaxUniformBlockSize
/ 4 *
207 pc
->MaxUniformBlocks
);
209 /* Gallium doesn't really care about local vs. env parameters so use the
212 pc
->MaxLocalParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_LOCAL_PARAMS
);
213 pc
->MaxEnvParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_ENV_PARAMS
);
215 options
->EmitNoNoise
= TRUE
;
217 /* TODO: make these more fine-grained if anyone needs it */
218 options
->MaxIfDepth
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
219 options
->EmitNoLoops
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
220 options
->EmitNoFunctions
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
221 options
->EmitNoMainReturn
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
223 options
->EmitNoCont
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED
);
225 options
->EmitNoIndirectInput
= !screen
->get_shader_param(screen
, sh
,
226 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR
);
227 options
->EmitNoIndirectOutput
= !screen
->get_shader_param(screen
, sh
,
228 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR
);
229 options
->EmitNoIndirectTemp
= !screen
->get_shader_param(screen
, sh
,
230 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR
);
231 options
->EmitNoIndirectUniform
= !screen
->get_shader_param(screen
, sh
,
232 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR
);
234 if (pc
->MaxNativeInstructions
&&
235 (options
->EmitNoIndirectUniform
|| pc
->MaxUniformBlocks
< 12)) {
239 if (options
->EmitNoLoops
)
240 options
->MaxUnrollIterations
= MIN2(screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
), 65536);
242 options
->MaxUnrollIterations
= 255; /* SM3 limit */
243 options
->LowerClipDistance
= true;
246 /* This depends on program constants. */
247 c
->MaxTextureCoordUnits
248 = _min(c
->FragmentProgram
.MaxTextureImageUnits
, MAX_TEXTURE_COORD_UNITS
);
250 c
->MaxTextureUnits
= _min(c
->FragmentProgram
.MaxTextureImageUnits
, c
->MaxTextureCoordUnits
);
252 c
->VertexProgram
.MaxAttribs
= MIN2(c
->VertexProgram
.MaxAttribs
, 16);
254 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
255 * of inputs. It's always 2 colors + N generic inputs. */
256 c
->MaxVarying
= screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
257 PIPE_SHADER_CAP_MAX_INPUTS
);
258 c
->MaxVarying
= MIN2(c
->MaxVarying
, MAX_VARYING
);
259 c
->MaxVaryingComponents
= c
->MaxVarying
* 4;
261 c
->MinProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MIN_TEXEL_OFFSET
);
262 c
->MaxProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MAX_TEXEL_OFFSET
);
264 c
->UniformBooleanTrue
= ~0;
266 c
->MaxTransformFeedbackBuffers
=
267 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
);
268 c
->MaxTransformFeedbackBuffers
= MIN2(c
->MaxTransformFeedbackBuffers
, MAX_FEEDBACK_BUFFERS
);
269 c
->MaxTransformFeedbackSeparateComponents
=
270 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS
);
271 c
->MaxTransformFeedbackInterleavedComponents
=
272 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS
);
274 c
->StripTextureBorder
= GL_TRUE
;
276 c
->GLSLSkipStrictMaxUniformLimitCheck
=
277 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS
);
279 c
->GLSLSkipStrictMaxVaryingLimitCheck
=
280 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS
);
283 st
->ctx
->Extensions
.ARB_uniform_buffer_object
= GL_TRUE
;
284 c
->UniformBufferOffsetAlignment
=
285 screen
->get_param(screen
, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT
);
286 c
->MaxCombinedUniformBlocks
= c
->MaxUniformBufferBindings
=
287 c
->VertexProgram
.MaxUniformBlocks
+
288 c
->GeometryProgram
.MaxUniformBlocks
+
289 c
->FragmentProgram
.MaxUniformBlocks
;
294 static GLboolean
st_get_s3tc_override(void)
296 const char *override
= _mesa_getenv("force_s3tc_enable");
297 if (override
&& !strcmp(override
, "true"))
303 * Given a member \c x of struct gl_extensions, return offset of
306 #define o(x) offsetof(struct gl_extensions, x)
309 struct st_extension_cap_mapping
{
310 int extension_offset
;
314 struct st_extension_format_mapping
{
315 int extension_offset
[2];
316 enum pipe_format format
[8];
318 /* If TRUE, at least one format must be supported for the extensions to be
319 * advertised. If FALSE, all the formats must be supported. */
320 GLboolean need_at_least_one
;
324 * Enable extensions if certain pipe formats are supported by the driver.
325 * What extensions will be enabled and what formats must be supported is
326 * described by the array of st_extension_format_mapping.
328 * target and bind_flags are passed to is_format_supported.
330 static void init_format_extensions(struct st_context
*st
,
331 const struct st_extension_format_mapping
*mapping
,
332 unsigned num_mappings
,
333 enum pipe_texture_target target
,
336 struct pipe_screen
*screen
= st
->pipe
->screen
;
337 GLboolean
*extensions
= (GLboolean
*) &st
->ctx
->Extensions
;
340 int num_formats
= Elements(mapping
->format
);
341 int num_ext
= Elements(mapping
->extension_offset
);
343 for (i
= 0; i
< num_mappings
; i
++) {
344 int num_supported
= 0;
346 /* Examine each format in the list. */
347 for (j
= 0; j
< num_formats
&& mapping
[i
].format
[j
]; j
++) {
348 if (screen
->is_format_supported(screen
, mapping
[i
].format
[j
],
349 target
, 0, bind_flags
)) {
354 if (!num_supported
||
355 (!mapping
[i
].need_at_least_one
&& num_supported
!= j
)) {
359 /* Enable all extensions in the list. */
360 for (j
= 0; j
< num_ext
&& mapping
[i
].extension_offset
[j
]; j
++)
361 extensions
[mapping
[i
].extension_offset
[j
]] = GL_TRUE
;
366 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
367 * which GL extensions are supported.
368 * Quite a few extensions are always supported because they are standard
369 * features or can be built on top of other gallium features.
370 * Some fine tuning may still be needed.
372 void st_init_extensions(struct st_context
*st
)
374 struct pipe_screen
*screen
= st
->pipe
->screen
;
375 struct gl_context
*ctx
= st
->ctx
;
376 int i
, glsl_feature_level
;
377 GLboolean
*extensions
= (GLboolean
*) &ctx
->Extensions
;
379 static const struct st_extension_cap_mapping cap_mapping
[] = {
380 { o(ARB_base_instance
), PIPE_CAP_START_INSTANCE
},
381 { o(ARB_depth_clamp
), PIPE_CAP_DEPTH_CLIP_DISABLE
},
382 { o(ARB_depth_texture
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
383 { o(ARB_draw_buffers_blend
), PIPE_CAP_INDEP_BLEND_FUNC
},
384 { o(ARB_draw_instanced
), PIPE_CAP_TGSI_INSTANCEID
},
385 { o(ARB_fragment_program_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
386 { o(ARB_instanced_arrays
), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR
},
387 { o(ARB_occlusion_query
), PIPE_CAP_OCCLUSION_QUERY
},
388 { o(ARB_occlusion_query2
), PIPE_CAP_OCCLUSION_QUERY
},
389 { o(ARB_point_sprite
), PIPE_CAP_POINT_SPRITE
},
390 { o(ARB_seamless_cube_map
), PIPE_CAP_SEAMLESS_CUBE_MAP
},
391 { o(ARB_shader_stencil_export
), PIPE_CAP_SHADER_STENCIL_EXPORT
},
392 { o(ARB_shader_texture_lod
), PIPE_CAP_SM3
},
393 { o(ARB_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
394 { o(ARB_texture_non_power_of_two
), PIPE_CAP_NPOT_TEXTURES
},
395 { o(ARB_timer_query
), PIPE_CAP_QUERY_TIMESTAMP
},
396 { o(ARB_transform_feedback2
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
397 { o(ARB_transform_feedback3
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
399 { o(EXT_blend_equation_separate
), PIPE_CAP_BLEND_EQUATION_SEPARATE
},
400 { o(EXT_draw_buffers2
), PIPE_CAP_INDEP_BLEND_ENABLE
},
401 { o(EXT_shadow_funcs
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
402 { o(EXT_stencil_two_side
), PIPE_CAP_TWO_SIDED_STENCIL
},
403 { o(EXT_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
404 { o(EXT_texture_filter_anisotropic
), PIPE_CAP_ANISOTROPIC_FILTER
},
405 { o(EXT_texture_mirror_clamp
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
406 { o(EXT_texture_swizzle
), PIPE_CAP_TEXTURE_SWIZZLE
},
407 { o(EXT_transform_feedback
), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
},
409 { o(AMD_seamless_cubemap_per_texture
), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE
},
410 { o(ATI_separate_stencil
), PIPE_CAP_TWO_SIDED_STENCIL
},
411 { o(ATI_texture_mirror_once
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
412 { o(NV_conditional_render
), PIPE_CAP_CONDITIONAL_RENDER
},
413 { o(NV_texture_barrier
), PIPE_CAP_TEXTURE_BARRIER
},
414 /* GL_NV_point_sprite is not supported by gallium because we don't
415 * support the GL_POINT_SPRITE_R_MODE_NV option. */
416 { o(MESA_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
418 { o(OES_standard_derivatives
), PIPE_CAP_SM3
},
419 { o(ARB_texture_cube_map_array
), PIPE_CAP_CUBE_MAP_ARRAY
},
420 { o(ARB_texture_multisample
), PIPE_CAP_TEXTURE_MULTISAMPLE
}
423 /* Required: render target and sampler support */
424 static const struct st_extension_format_mapping rendertarget_mapping
[] = {
425 { { o(ARB_texture_float
) },
426 { PIPE_FORMAT_R32G32B32A32_FLOAT
,
427 PIPE_FORMAT_R16G16B16A16_FLOAT
} },
429 { { o(ARB_texture_rgb10_a2ui
) },
430 { PIPE_FORMAT_B10G10R10A2_UINT
} },
432 { { o(EXT_framebuffer_sRGB
) },
433 { PIPE_FORMAT_A8B8G8R8_SRGB
,
434 PIPE_FORMAT_B8G8R8A8_SRGB
},
435 GL_TRUE
}, /* at least one format must be supported */
437 { { o(EXT_packed_float
) },
438 { PIPE_FORMAT_R11G11B10_FLOAT
} },
440 { { o(EXT_texture_integer
) },
441 { PIPE_FORMAT_R32G32B32A32_UINT
,
442 PIPE_FORMAT_R32G32B32A32_SINT
} },
444 { { o(ARB_texture_rg
) },
445 { PIPE_FORMAT_R8_UNORM
,
446 PIPE_FORMAT_R8G8_UNORM
} },
449 /* Required: depth stencil and sampler support */
450 static const struct st_extension_format_mapping depthstencil_mapping
[] = {
451 { { o(ARB_depth_buffer_float
) },
452 { PIPE_FORMAT_Z32_FLOAT
,
453 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
} },
455 { { o(ARB_framebuffer_object
),
456 o(EXT_packed_depth_stencil
) },
457 { PIPE_FORMAT_S8_UINT_Z24_UNORM
,
458 PIPE_FORMAT_Z24_UNORM_S8_UINT
},
459 GL_TRUE
}, /* at least one format must be supported */
462 /* Required: sampler support */
463 static const struct st_extension_format_mapping texture_mapping
[] = {
464 { { o(ARB_texture_compression_rgtc
) },
465 { PIPE_FORMAT_RGTC1_UNORM
,
466 PIPE_FORMAT_RGTC1_SNORM
,
467 PIPE_FORMAT_RGTC2_UNORM
,
468 PIPE_FORMAT_RGTC2_SNORM
} },
470 { { o(EXT_texture_compression_latc
) },
471 { PIPE_FORMAT_LATC1_UNORM
,
472 PIPE_FORMAT_LATC1_SNORM
,
473 PIPE_FORMAT_LATC2_UNORM
,
474 PIPE_FORMAT_LATC2_SNORM
} },
476 { { o(EXT_texture_compression_s3tc
),
477 o(ANGLE_texture_compression_dxt
) },
478 { PIPE_FORMAT_DXT1_RGB
,
479 PIPE_FORMAT_DXT1_RGBA
,
480 PIPE_FORMAT_DXT3_RGBA
,
481 PIPE_FORMAT_DXT5_RGBA
} },
483 { { o(EXT_texture_shared_exponent
) },
484 { PIPE_FORMAT_R9G9B9E5_FLOAT
} },
486 { { o(EXT_texture_snorm
) },
487 { PIPE_FORMAT_R8G8B8A8_SNORM
} },
489 { { o(EXT_texture_sRGB
),
490 o(EXT_texture_sRGB_decode
) },
491 { PIPE_FORMAT_A8B8G8R8_SRGB
,
492 PIPE_FORMAT_B8G8R8A8_SRGB
},
493 GL_TRUE
}, /* at least one format must be supported */
495 { { o(ATI_texture_compression_3dc
) },
496 { PIPE_FORMAT_LATC2_UNORM
} },
498 { { o(MESA_ycbcr_texture
) },
501 GL_TRUE
}, /* at least one format must be supported */
503 { { o(OES_compressed_ETC1_RGB8_texture
) },
504 { PIPE_FORMAT_ETC1_RGB8
} },
507 /* Required: vertex fetch support. */
508 static const struct st_extension_format_mapping vertex_mapping
[] = {
509 { { o(ARB_vertex_type_2_10_10_10_rev
) },
510 { PIPE_FORMAT_R10G10B10A2_UNORM
,
511 PIPE_FORMAT_B10G10R10A2_UNORM
,
512 PIPE_FORMAT_R10G10B10A2_SNORM
,
513 PIPE_FORMAT_B10G10R10A2_SNORM
,
514 PIPE_FORMAT_R10G10B10A2_USCALED
,
515 PIPE_FORMAT_B10G10R10A2_USCALED
,
516 PIPE_FORMAT_R10G10B10A2_SSCALED
,
517 PIPE_FORMAT_B10G10R10A2_SSCALED
} },
520 static const struct st_extension_format_mapping tbo_rgb32
[] = {
521 { {o(ARB_texture_buffer_object_rgb32
) },
522 { PIPE_FORMAT_R32G32B32_FLOAT
,
523 PIPE_FORMAT_R32G32B32_UINT
,
524 PIPE_FORMAT_R32G32B32_SINT
,
529 * Extensions that are supported by all Gallium drivers:
531 ctx
->Extensions
.ARB_ES2_compatibility
= GL_TRUE
;
532 ctx
->Extensions
.ARB_draw_elements_base_vertex
= GL_TRUE
;
533 ctx
->Extensions
.ARB_explicit_attrib_location
= GL_TRUE
;
534 ctx
->Extensions
.ARB_fragment_coord_conventions
= GL_TRUE
;
535 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
536 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
537 ctx
->Extensions
.ARB_half_float_pixel
= GL_TRUE
;
538 ctx
->Extensions
.ARB_half_float_vertex
= GL_TRUE
;
539 ctx
->Extensions
.ARB_internalformat_query
= GL_TRUE
;
540 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
541 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
542 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
543 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
544 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
545 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
546 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
547 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
548 ctx
->Extensions
.ARB_texture_storage
= GL_TRUE
;
549 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
550 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
552 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
553 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
554 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
555 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
556 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
557 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
558 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
559 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
560 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
561 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
562 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
563 ctx
->Extensions
.EXT_separate_shader_objects
= GL_TRUE
;
564 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
565 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
567 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
569 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
571 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
572 ctx
->Extensions
.NV_fog_distance
= GL_TRUE
;
573 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
574 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
576 ctx
->Extensions
.OES_EGL_image
= GL_TRUE
;
577 if (ctx
->API
!= API_OPENGL_COMPAT
)
578 ctx
->Extensions
.OES_EGL_image_external
= GL_TRUE
;
579 ctx
->Extensions
.OES_draw_texture
= GL_TRUE
;
581 /* Expose the extensions which directly correspond to gallium caps. */
582 for (i
= 0; i
< Elements(cap_mapping
); i
++) {
583 if (screen
->get_param(screen
, cap_mapping
[i
].cap
)) {
584 extensions
[cap_mapping
[i
].extension_offset
] = GL_TRUE
;
588 /* Expose the extensions which directly correspond to gallium formats. */
589 init_format_extensions(st
, rendertarget_mapping
,
590 Elements(rendertarget_mapping
), PIPE_TEXTURE_2D
,
591 PIPE_BIND_RENDER_TARGET
| PIPE_BIND_SAMPLER_VIEW
);
592 init_format_extensions(st
, depthstencil_mapping
,
593 Elements(depthstencil_mapping
), PIPE_TEXTURE_2D
,
594 PIPE_BIND_DEPTH_STENCIL
| PIPE_BIND_SAMPLER_VIEW
);
595 init_format_extensions(st
, texture_mapping
, Elements(texture_mapping
),
596 PIPE_TEXTURE_2D
, PIPE_BIND_SAMPLER_VIEW
);
597 init_format_extensions(st
, vertex_mapping
, Elements(vertex_mapping
),
598 PIPE_BUFFER
, PIPE_BIND_VERTEX_BUFFER
);
600 /* Figure out GLSL support. */
601 glsl_feature_level
= screen
->get_param(screen
, PIPE_CAP_GLSL_FEATURE_LEVEL
);
603 if (glsl_feature_level
>= 140) {
604 ctx
->Const
.GLSLVersion
= 140;
605 } else if (glsl_feature_level
>= 130) {
606 ctx
->Const
.GLSLVersion
= 130;
608 ctx
->Const
.GLSLVersion
= 120;
611 _mesa_override_glsl_version(st
->ctx
);
613 if (ctx
->Const
.GLSLVersion
>= 130) {
614 ctx
->Const
.NativeIntegers
= GL_TRUE
;
615 ctx
->Const
.MaxClipPlanes
= 8;
617 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
618 ctx
->Extensions
.ARB_conservative_depth
= GL_TRUE
;
619 ctx
->Extensions
.ARB_shader_bit_encoding
= GL_TRUE
;
620 ctx
->Extensions
.ARB_shading_language_packing
= GL_TRUE
;
621 ctx
->Extensions
.OES_depth_texture_cube_map
= GL_TRUE
;
623 /* Optional integer support for GLSL 1.2. */
624 if (screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
625 PIPE_SHADER_CAP_INTEGERS
) &&
626 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
627 PIPE_SHADER_CAP_INTEGERS
)) {
628 ctx
->Const
.NativeIntegers
= GL_TRUE
;
632 /* Below are the cases which cannot be moved into tables easily. */
634 if (!ctx
->Mesa_DXTn
&& !st_get_s3tc_override()) {
635 ctx
->Extensions
.EXT_texture_compression_s3tc
= GL_FALSE
;
636 ctx
->Extensions
.ANGLE_texture_compression_dxt
= GL_FALSE
;
639 if (screen
->get_shader_param(screen
, PIPE_SHADER_GEOMETRY
,
640 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
641 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
642 ctx
->Extensions
.ARB_geometry_shader4
= GL_TRUE
;
646 ctx
->Extensions
.NV_primitive_restart
= GL_TRUE
;
647 if (!screen
->get_param(screen
, PIPE_CAP_PRIMITIVE_RESTART
)) {
648 ctx
->Const
.PrimitiveRestartInSoftware
= GL_TRUE
;
651 /* ARB_color_buffer_float. */
652 if (screen
->get_param(screen
, PIPE_CAP_VERTEX_COLOR_UNCLAMPED
)) {
653 ctx
->Extensions
.ARB_color_buffer_float
= GL_TRUE
;
655 if (!screen
->get_param(screen
, PIPE_CAP_VERTEX_COLOR_CLAMPED
)) {
656 st
->clamp_vert_color_in_shader
= TRUE
;
659 if (!screen
->get_param(screen
, PIPE_CAP_FRAGMENT_COLOR_CLAMPED
)) {
660 st
->clamp_frag_color_in_shader
= TRUE
;
663 /* For drivers which cannot do color clamping, it's better to just
664 * disable ARB_color_buffer_float in the core profile, because
665 * the clamping is deprecated there anyway. */
666 if (ctx
->API
== API_OPENGL_CORE
&&
667 (st
->clamp_frag_color_in_shader
|| st
->clamp_vert_color_in_shader
)) {
668 st
->clamp_vert_color_in_shader
= GL_FALSE
;
669 st
->clamp_frag_color_in_shader
= GL_FALSE
;
670 ctx
->Extensions
.ARB_color_buffer_float
= GL_FALSE
;
674 if (screen
->fence_finish
) {
675 ctx
->Extensions
.ARB_sync
= GL_TRUE
;
678 /* Maximum sample count. */
679 for (i
= 16; i
> 0; --i
) {
680 enum pipe_format pformat
= st_choose_format(st
, GL_RGBA
,
683 PIPE_BIND_RENDER_TARGET
, FALSE
);
684 if (pformat
!= PIPE_FORMAT_NONE
) {
685 ctx
->Const
.MaxSamples
= i
;
686 ctx
->Const
.MaxColorTextureSamples
= i
;
690 for (i
= ctx
->Const
.MaxSamples
; i
> 0; --i
) {
691 enum pipe_format pformat
= st_choose_format(st
, GL_DEPTH_STENCIL
,
694 PIPE_BIND_DEPTH_STENCIL
, FALSE
);
695 if (pformat
!= PIPE_FORMAT_NONE
) {
696 ctx
->Const
.MaxDepthTextureSamples
= i
;
700 for (i
= ctx
->Const
.MaxSamples
; i
> 0; --i
) {
701 enum pipe_format pformat
= st_choose_format(st
, GL_RGBA_INTEGER
,
704 PIPE_BIND_RENDER_TARGET
, FALSE
);
705 if (pformat
!= PIPE_FORMAT_NONE
) {
706 ctx
->Const
.MaxIntegerSamples
= i
;
710 if (ctx
->Const
.MaxSamples
== 1) {
711 /* one sample doesn't really make sense */
712 ctx
->Const
.MaxSamples
= 0;
714 else if (ctx
->Const
.MaxSamples
>= 2) {
715 ctx
->Extensions
.EXT_framebuffer_multisample
= GL_TRUE
;
718 if (ctx
->Const
.MaxDualSourceDrawBuffers
> 0)
719 ctx
->Extensions
.ARB_blend_func_extended
= GL_TRUE
;
721 st
->has_time_elapsed
=
722 screen
->get_param(screen
, PIPE_CAP_QUERY_TIME_ELAPSED
);
724 if (st
->has_time_elapsed
||
725 ctx
->Extensions
.ARB_timer_query
) {
726 ctx
->Extensions
.EXT_timer_query
= GL_TRUE
;
729 if (ctx
->Extensions
.ARB_transform_feedback2
&&
730 ctx
->Extensions
.ARB_draw_instanced
) {
731 ctx
->Extensions
.ARB_transform_feedback_instanced
= GL_TRUE
;
733 if (st
->options
.force_glsl_extensions_warn
)
734 ctx
->Const
.ForceGLSLExtensionsWarn
= 1;
736 if (st
->options
.disable_glsl_line_continuations
)
737 ctx
->Const
.DisableGLSLLineContinuations
= 1;
739 ctx
->Const
.MinMapBufferAlignment
=
740 screen
->get_param(screen
, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT
);
741 if (ctx
->Const
.MinMapBufferAlignment
>= 64) {
742 ctx
->Extensions
.ARB_map_buffer_alignment
= GL_TRUE
;
744 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OBJECTS
)) {
745 ctx
->Extensions
.ARB_texture_buffer_object
= GL_TRUE
;
747 ctx
->Const
.TextureBufferOffsetAlignment
=
748 screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT
);
750 if (ctx
->Const
.TextureBufferOffsetAlignment
)
751 ctx
->Extensions
.ARB_texture_buffer_range
= GL_TRUE
;
753 init_format_extensions(st
, tbo_rgb32
, Elements(tbo_rgb32
),
754 PIPE_BUFFER
, PIPE_BIND_SAMPLER_VIEW
);
758 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
759 * If the number of available texture indirections is very limited, then we
760 * prefer to disable varying packing rather than run the risk of varying
761 * packing preventing a shader from running.
763 if (screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
764 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
) <= 8) {
765 /* We can't disable varying packing if transform feedback is available,
766 * because transform feedback code assumes a packed varying layout.
768 if (!ctx
->Extensions
.EXT_transform_feedback
)
769 ctx
->Const
.DisableVaryingPacking
= GL_TRUE
;