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
->FragmentProgram
.MaxTextureImageUnits
93 = _min(screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
94 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS
),
95 MAX_TEXTURE_IMAGE_UNITS
);
97 c
->VertexProgram
.MaxTextureImageUnits
98 = _min(screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
99 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS
),
100 MAX_TEXTURE_IMAGE_UNITS
);
102 c
->MaxCombinedTextureImageUnits
103 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_COMBINED_SAMPLERS
),
104 MAX_COMBINED_TEXTURE_IMAGE_UNITS
);
106 c
->MaxTextureCoordUnits
107 = _min(c
->FragmentProgram
.MaxTextureImageUnits
, MAX_TEXTURE_COORD_UNITS
);
109 c
->MaxTextureUnits
= _min(c
->FragmentProgram
.MaxTextureImageUnits
, c
->MaxTextureCoordUnits
);
111 /* Define max viewport size and max renderbuffer size in terms of
112 * max texture size (note: max tex RECT size = max tex 2D size).
113 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
115 c
->MaxViewportWidth
=
116 c
->MaxViewportHeight
=
117 c
->MaxRenderbufferSize
= c
->MaxTextureRectSize
;
120 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
121 1, MAX_DRAW_BUFFERS
);
123 c
->MaxDualSourceDrawBuffers
124 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS
),
125 0, MAX_DRAW_BUFFERS
);
128 = _maxf(1.0f
, screen
->get_paramf(screen
,
129 PIPE_CAPF_MAX_LINE_WIDTH
));
131 = _maxf(1.0f
, screen
->get_paramf(screen
,
132 PIPE_CAPF_MAX_LINE_WIDTH_AA
));
135 = _maxf(1.0f
, screen
->get_paramf(screen
,
136 PIPE_CAPF_MAX_POINT_WIDTH
));
138 = _maxf(1.0f
, screen
->get_paramf(screen
,
139 PIPE_CAPF_MAX_POINT_WIDTH_AA
));
140 /* called after _mesa_create_context/_mesa_init_point, fix default user
141 * settable max point size up
143 st
->ctx
->Point
.MaxSize
= MAX2(c
->MaxPointSize
, c
->MaxPointSizeAA
);
144 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
145 * for non-aa sizes, but we can go down to 0.0 for aa points.
147 c
->MinPointSize
= 1.0f
;
148 c
->MinPointSizeAA
= 0.0f
;
150 c
->MaxTextureMaxAnisotropy
151 = _maxf(2.0f
, screen
->get_paramf(screen
,
152 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY
));
155 = screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS
);
158 = CLAMP(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
159 1, MAX_DRAW_BUFFERS
);
161 c
->QuadsFollowProvokingVertexConvention
= screen
->get_param(
162 screen
, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION
);
164 c
->MaxUniformBlockSize
=
165 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
166 PIPE_SHADER_CAP_MAX_CONSTS
) * 16;
167 if (c
->MaxUniformBlockSize
< 16384) {
171 for (sh
= 0; sh
< MESA_SHADER_TYPES
; ++sh
) {
172 struct gl_shader_compiler_options
*options
=
173 &st
->ctx
->ShaderCompilerOptions
[sh
];
174 struct gl_program_constants
*pc
;
177 case PIPE_SHADER_FRAGMENT
:
178 pc
= &c
->FragmentProgram
;
180 case PIPE_SHADER_VERTEX
:
181 pc
= &c
->VertexProgram
;
183 case PIPE_SHADER_GEOMETRY
:
184 pc
= &c
->GeometryProgram
;
191 pc
->MaxInstructions
= pc
->MaxNativeInstructions
=
192 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
193 pc
->MaxAluInstructions
= pc
->MaxNativeAluInstructions
=
194 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS
);
195 pc
->MaxTexInstructions
= pc
->MaxNativeTexInstructions
=
196 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS
);
197 pc
->MaxTexIndirections
= pc
->MaxNativeTexIndirections
=
198 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
);
199 pc
->MaxAttribs
= pc
->MaxNativeAttribs
=
200 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
);
201 pc
->MaxTemps
= pc
->MaxNativeTemps
=
202 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEMPS
);
203 pc
->MaxAddressRegs
= pc
->MaxNativeAddressRegs
=
204 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ADDRS
);
205 pc
->MaxParameters
= pc
->MaxNativeParameters
=
206 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONSTS
);
208 pc
->MaxUniformComponents
= 4 * MIN2(pc
->MaxNativeParameters
, MAX_UNIFORMS
);
210 pc
->MaxUniformBlocks
=
211 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONST_BUFFERS
);
212 if (pc
->MaxUniformBlocks
)
213 pc
->MaxUniformBlocks
-= 1; /* The first one is for ordinary uniforms. */
215 pc
->MaxCombinedUniformComponents
= (pc
->MaxUniformComponents
+
216 c
->MaxUniformBlockSize
/ 4 *
217 pc
->MaxUniformBlocks
);
219 /* Gallium doesn't really care about local vs. env parameters so use the
222 pc
->MaxLocalParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_LOCAL_PARAMS
);
223 pc
->MaxEnvParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_ENV_PARAMS
);
225 options
->EmitNoNoise
= TRUE
;
227 /* TODO: make these more fine-grained if anyone needs it */
228 options
->MaxIfDepth
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
229 options
->EmitNoLoops
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
230 options
->EmitNoFunctions
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
231 options
->EmitNoMainReturn
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
233 options
->EmitNoCont
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED
);
235 options
->EmitNoIndirectInput
= !screen
->get_shader_param(screen
, sh
,
236 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR
);
237 options
->EmitNoIndirectOutput
= !screen
->get_shader_param(screen
, sh
,
238 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR
);
239 options
->EmitNoIndirectTemp
= !screen
->get_shader_param(screen
, sh
,
240 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR
);
241 options
->EmitNoIndirectUniform
= !screen
->get_shader_param(screen
, sh
,
242 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR
);
244 if (pc
->MaxNativeInstructions
&&
245 (options
->EmitNoIndirectUniform
|| pc
->MaxUniformBlocks
< 12)) {
249 if (options
->EmitNoLoops
)
250 options
->MaxUnrollIterations
= MIN2(screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
), 65536);
252 options
->MaxUnrollIterations
= 255; /* SM3 limit */
253 options
->LowerClipDistance
= true;
256 c
->VertexProgram
.MaxAttribs
= MIN2(c
->VertexProgram
.MaxAttribs
, 16);
258 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
259 * of inputs. It's always 2 colors + N generic inputs. */
260 c
->MaxVarying
= screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
261 PIPE_SHADER_CAP_MAX_INPUTS
);
262 c
->MaxVarying
= MIN2(c
->MaxVarying
, MAX_VARYING
);
263 c
->MaxVaryingComponents
= c
->MaxVarying
* 4;
265 c
->MinProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MIN_TEXEL_OFFSET
);
266 c
->MaxProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MAX_TEXEL_OFFSET
);
268 c
->UniformBooleanTrue
= ~0;
270 c
->MaxTransformFeedbackBuffers
=
271 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
);
272 c
->MaxTransformFeedbackBuffers
= MIN2(c
->MaxTransformFeedbackBuffers
, MAX_FEEDBACK_BUFFERS
);
273 c
->MaxTransformFeedbackSeparateComponents
=
274 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS
);
275 c
->MaxTransformFeedbackInterleavedComponents
=
276 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS
);
278 c
->StripTextureBorder
= GL_TRUE
;
280 c
->GLSLSkipStrictMaxUniformLimitCheck
=
281 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS
);
283 c
->GLSLSkipStrictMaxVaryingLimitCheck
=
284 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS
);
287 st
->ctx
->Extensions
.ARB_uniform_buffer_object
= GL_TRUE
;
288 c
->UniformBufferOffsetAlignment
=
289 screen
->get_param(screen
, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT
);
290 c
->MaxCombinedUniformBlocks
= c
->MaxUniformBufferBindings
=
291 c
->VertexProgram
.MaxUniformBlocks
+
292 c
->GeometryProgram
.MaxUniformBlocks
+
293 c
->FragmentProgram
.MaxUniformBlocks
;
298 static GLboolean
st_get_s3tc_override(void)
300 const char *override
= _mesa_getenv("force_s3tc_enable");
301 if (override
&& !strcmp(override
, "true"))
307 * Given a member \c x of struct gl_extensions, return offset of
310 #define o(x) offsetof(struct gl_extensions, x)
313 struct st_extension_cap_mapping
{
314 int extension_offset
;
318 struct st_extension_format_mapping
{
319 int extension_offset
[2];
320 enum pipe_format format
[8];
322 /* If TRUE, at least one format must be supported for the extensions to be
323 * advertised. If FALSE, all the formats must be supported. */
324 GLboolean need_at_least_one
;
328 * Enable extensions if certain pipe formats are supported by the driver.
329 * What extensions will be enabled and what formats must be supported is
330 * described by the array of st_extension_format_mapping.
332 * target and bind_flags are passed to is_format_supported.
334 static void init_format_extensions(struct st_context
*st
,
335 const struct st_extension_format_mapping
*mapping
,
336 unsigned num_mappings
,
337 enum pipe_texture_target target
,
340 struct pipe_screen
*screen
= st
->pipe
->screen
;
341 GLboolean
*extensions
= (GLboolean
*) &st
->ctx
->Extensions
;
344 int num_formats
= Elements(mapping
->format
);
345 int num_ext
= Elements(mapping
->extension_offset
);
347 for (i
= 0; i
< num_mappings
; i
++) {
348 int num_supported
= 0;
350 /* Examine each format in the list. */
351 for (j
= 0; j
< num_formats
&& mapping
[i
].format
[j
]; j
++) {
352 if (screen
->is_format_supported(screen
, mapping
[i
].format
[j
],
353 target
, 0, bind_flags
)) {
358 if (!num_supported
||
359 (!mapping
[i
].need_at_least_one
&& num_supported
!= j
)) {
363 /* Enable all extensions in the list. */
364 for (j
= 0; j
< num_ext
&& mapping
[i
].extension_offset
[j
]; j
++)
365 extensions
[mapping
[i
].extension_offset
[j
]] = GL_TRUE
;
370 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
371 * which GL extensions are supported.
372 * Quite a few extensions are always supported because they are standard
373 * features or can be built on top of other gallium features.
374 * Some fine tuning may still be needed.
376 void st_init_extensions(struct st_context
*st
)
378 struct pipe_screen
*screen
= st
->pipe
->screen
;
379 struct gl_context
*ctx
= st
->ctx
;
380 int i
, glsl_feature_level
;
381 GLboolean
*extensions
= (GLboolean
*) &ctx
->Extensions
;
383 static const struct st_extension_cap_mapping cap_mapping
[] = {
384 { o(ARB_base_instance
), PIPE_CAP_START_INSTANCE
},
385 { o(ARB_depth_clamp
), PIPE_CAP_DEPTH_CLIP_DISABLE
},
386 { o(ARB_depth_texture
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
387 { o(ARB_draw_buffers_blend
), PIPE_CAP_INDEP_BLEND_FUNC
},
388 { o(ARB_draw_instanced
), PIPE_CAP_TGSI_INSTANCEID
},
389 { o(ARB_fragment_program_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
390 { o(ARB_instanced_arrays
), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR
},
391 { o(ARB_occlusion_query
), PIPE_CAP_OCCLUSION_QUERY
},
392 { o(ARB_occlusion_query2
), PIPE_CAP_OCCLUSION_QUERY
},
393 { o(ARB_point_sprite
), PIPE_CAP_POINT_SPRITE
},
394 { o(ARB_seamless_cube_map
), PIPE_CAP_SEAMLESS_CUBE_MAP
},
395 { o(ARB_shader_stencil_export
), PIPE_CAP_SHADER_STENCIL_EXPORT
},
396 { o(ARB_shader_texture_lod
), PIPE_CAP_SM3
},
397 { o(ARB_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
398 { o(ARB_texture_non_power_of_two
), PIPE_CAP_NPOT_TEXTURES
},
399 { o(ARB_timer_query
), PIPE_CAP_QUERY_TIMESTAMP
},
400 { o(ARB_transform_feedback2
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
401 { o(ARB_transform_feedback3
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
403 { o(EXT_blend_equation_separate
), PIPE_CAP_BLEND_EQUATION_SEPARATE
},
404 { o(EXT_draw_buffers2
), PIPE_CAP_INDEP_BLEND_ENABLE
},
405 { o(EXT_shadow_funcs
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
406 { o(EXT_stencil_two_side
), PIPE_CAP_TWO_SIDED_STENCIL
},
407 { o(EXT_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
408 { o(EXT_texture_filter_anisotropic
), PIPE_CAP_ANISOTROPIC_FILTER
},
409 { o(EXT_texture_mirror_clamp
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
410 { o(EXT_texture_swizzle
), PIPE_CAP_TEXTURE_SWIZZLE
},
411 { o(EXT_transform_feedback
), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
},
413 { o(AMD_seamless_cubemap_per_texture
), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE
},
414 { o(ATI_separate_stencil
), PIPE_CAP_TWO_SIDED_STENCIL
},
415 { o(ATI_texture_mirror_once
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
416 { o(NV_conditional_render
), PIPE_CAP_CONDITIONAL_RENDER
},
417 { o(NV_texture_barrier
), PIPE_CAP_TEXTURE_BARRIER
},
418 /* GL_NV_point_sprite is not supported by gallium because we don't
419 * support the GL_POINT_SPRITE_R_MODE_NV option. */
420 { o(MESA_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
422 { o(OES_standard_derivatives
), PIPE_CAP_SM3
},
423 { o(ARB_texture_cube_map_array
), PIPE_CAP_CUBE_MAP_ARRAY
},
424 { o(ARB_texture_multisample
), PIPE_CAP_TEXTURE_MULTISAMPLE
}
427 /* Required: render target and sampler support */
428 static const struct st_extension_format_mapping rendertarget_mapping
[] = {
429 { { o(ARB_texture_float
) },
430 { PIPE_FORMAT_R32G32B32A32_FLOAT
,
431 PIPE_FORMAT_R16G16B16A16_FLOAT
} },
433 { { o(ARB_texture_rgb10_a2ui
) },
434 { PIPE_FORMAT_B10G10R10A2_UINT
} },
436 { { o(EXT_framebuffer_sRGB
) },
437 { PIPE_FORMAT_A8B8G8R8_SRGB
,
438 PIPE_FORMAT_B8G8R8A8_SRGB
},
439 GL_TRUE
}, /* at least one format must be supported */
441 { { o(EXT_packed_float
) },
442 { PIPE_FORMAT_R11G11B10_FLOAT
} },
444 { { o(EXT_texture_integer
) },
445 { PIPE_FORMAT_R32G32B32A32_UINT
,
446 PIPE_FORMAT_R32G32B32A32_SINT
} },
448 { { o(ARB_texture_rg
) },
449 { PIPE_FORMAT_R8_UNORM
,
450 PIPE_FORMAT_R8G8_UNORM
} },
453 /* Required: depth stencil and sampler support */
454 static const struct st_extension_format_mapping depthstencil_mapping
[] = {
455 { { o(ARB_depth_buffer_float
) },
456 { PIPE_FORMAT_Z32_FLOAT
,
457 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
} },
459 { { o(ARB_framebuffer_object
),
460 o(EXT_packed_depth_stencil
) },
461 { PIPE_FORMAT_S8_UINT_Z24_UNORM
,
462 PIPE_FORMAT_Z24_UNORM_S8_UINT
},
463 GL_TRUE
}, /* at least one format must be supported */
466 /* Required: sampler support */
467 static const struct st_extension_format_mapping texture_mapping
[] = {
468 { { o(ARB_texture_compression_rgtc
) },
469 { PIPE_FORMAT_RGTC1_UNORM
,
470 PIPE_FORMAT_RGTC1_SNORM
,
471 PIPE_FORMAT_RGTC2_UNORM
,
472 PIPE_FORMAT_RGTC2_SNORM
} },
474 { { o(EXT_texture_compression_latc
) },
475 { PIPE_FORMAT_LATC1_UNORM
,
476 PIPE_FORMAT_LATC1_SNORM
,
477 PIPE_FORMAT_LATC2_UNORM
,
478 PIPE_FORMAT_LATC2_SNORM
} },
480 { { o(EXT_texture_compression_s3tc
),
481 o(ANGLE_texture_compression_dxt
) },
482 { PIPE_FORMAT_DXT1_RGB
,
483 PIPE_FORMAT_DXT1_RGBA
,
484 PIPE_FORMAT_DXT3_RGBA
,
485 PIPE_FORMAT_DXT5_RGBA
} },
487 { { o(EXT_texture_shared_exponent
) },
488 { PIPE_FORMAT_R9G9B9E5_FLOAT
} },
490 { { o(EXT_texture_snorm
) },
491 { PIPE_FORMAT_R8G8B8A8_SNORM
} },
493 { { o(EXT_texture_sRGB
),
494 o(EXT_texture_sRGB_decode
) },
495 { PIPE_FORMAT_A8B8G8R8_SRGB
,
496 PIPE_FORMAT_B8G8R8A8_SRGB
},
497 GL_TRUE
}, /* at least one format must be supported */
499 { { o(ATI_texture_compression_3dc
) },
500 { PIPE_FORMAT_LATC2_UNORM
} },
502 { { o(MESA_ycbcr_texture
) },
505 GL_TRUE
}, /* at least one format must be supported */
507 { { o(OES_compressed_ETC1_RGB8_texture
) },
508 { PIPE_FORMAT_ETC1_RGB8
} },
511 /* Required: vertex fetch support. */
512 static const struct st_extension_format_mapping vertex_mapping
[] = {
513 { { o(ARB_vertex_type_2_10_10_10_rev
) },
514 { PIPE_FORMAT_R10G10B10A2_UNORM
,
515 PIPE_FORMAT_B10G10R10A2_UNORM
,
516 PIPE_FORMAT_R10G10B10A2_SNORM
,
517 PIPE_FORMAT_B10G10R10A2_SNORM
,
518 PIPE_FORMAT_R10G10B10A2_USCALED
,
519 PIPE_FORMAT_B10G10R10A2_USCALED
,
520 PIPE_FORMAT_R10G10B10A2_SSCALED
,
521 PIPE_FORMAT_B10G10R10A2_SSCALED
} },
524 static const struct st_extension_format_mapping tbo_rgb32
[] = {
525 { {o(ARB_texture_buffer_object_rgb32
) },
526 { PIPE_FORMAT_R32G32B32_FLOAT
,
527 PIPE_FORMAT_R32G32B32_UINT
,
528 PIPE_FORMAT_R32G32B32_SINT
,
533 * Extensions that are supported by all Gallium drivers:
535 ctx
->Extensions
.ARB_ES2_compatibility
= GL_TRUE
;
536 ctx
->Extensions
.ARB_draw_elements_base_vertex
= GL_TRUE
;
537 ctx
->Extensions
.ARB_explicit_attrib_location
= GL_TRUE
;
538 ctx
->Extensions
.ARB_fragment_coord_conventions
= GL_TRUE
;
539 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
540 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
541 ctx
->Extensions
.ARB_half_float_pixel
= GL_TRUE
;
542 ctx
->Extensions
.ARB_half_float_vertex
= GL_TRUE
;
543 ctx
->Extensions
.ARB_internalformat_query
= GL_TRUE
;
544 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
545 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
546 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
547 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
548 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
549 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
550 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
551 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
552 ctx
->Extensions
.ARB_texture_storage
= GL_TRUE
;
553 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
554 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
556 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
557 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
558 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
559 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
560 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
561 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
562 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
563 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
564 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
565 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
566 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
567 ctx
->Extensions
.EXT_separate_shader_objects
= GL_TRUE
;
568 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
569 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
571 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
573 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
575 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
576 ctx
->Extensions
.NV_fog_distance
= GL_TRUE
;
577 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
578 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
580 ctx
->Extensions
.OES_EGL_image
= GL_TRUE
;
581 if (ctx
->API
!= API_OPENGL_COMPAT
)
582 ctx
->Extensions
.OES_EGL_image_external
= GL_TRUE
;
583 ctx
->Extensions
.OES_draw_texture
= GL_TRUE
;
585 /* Expose the extensions which directly correspond to gallium caps. */
586 for (i
= 0; i
< Elements(cap_mapping
); i
++) {
587 if (screen
->get_param(screen
, cap_mapping
[i
].cap
)) {
588 extensions
[cap_mapping
[i
].extension_offset
] = GL_TRUE
;
592 /* Expose the extensions which directly correspond to gallium formats. */
593 init_format_extensions(st
, rendertarget_mapping
,
594 Elements(rendertarget_mapping
), PIPE_TEXTURE_2D
,
595 PIPE_BIND_RENDER_TARGET
| PIPE_BIND_SAMPLER_VIEW
);
596 init_format_extensions(st
, depthstencil_mapping
,
597 Elements(depthstencil_mapping
), PIPE_TEXTURE_2D
,
598 PIPE_BIND_DEPTH_STENCIL
| PIPE_BIND_SAMPLER_VIEW
);
599 init_format_extensions(st
, texture_mapping
, Elements(texture_mapping
),
600 PIPE_TEXTURE_2D
, PIPE_BIND_SAMPLER_VIEW
);
601 init_format_extensions(st
, vertex_mapping
, Elements(vertex_mapping
),
602 PIPE_BUFFER
, PIPE_BIND_VERTEX_BUFFER
);
604 /* Figure out GLSL support. */
605 glsl_feature_level
= screen
->get_param(screen
, PIPE_CAP_GLSL_FEATURE_LEVEL
);
607 if (glsl_feature_level
>= 140) {
608 ctx
->Const
.GLSLVersion
= 140;
609 } else if (glsl_feature_level
>= 130) {
610 ctx
->Const
.GLSLVersion
= 130;
612 ctx
->Const
.GLSLVersion
= 120;
615 _mesa_override_glsl_version(st
->ctx
);
617 if (ctx
->Const
.GLSLVersion
>= 130) {
618 ctx
->Const
.NativeIntegers
= GL_TRUE
;
619 ctx
->Const
.MaxClipPlanes
= 8;
621 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
622 ctx
->Extensions
.ARB_conservative_depth
= GL_TRUE
;
623 ctx
->Extensions
.ARB_shader_bit_encoding
= GL_TRUE
;
624 ctx
->Extensions
.ARB_shading_language_packing
= GL_TRUE
;
625 ctx
->Extensions
.OES_depth_texture_cube_map
= GL_TRUE
;
627 /* Optional integer support for GLSL 1.2. */
628 if (screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
629 PIPE_SHADER_CAP_INTEGERS
) &&
630 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
631 PIPE_SHADER_CAP_INTEGERS
)) {
632 ctx
->Const
.NativeIntegers
= GL_TRUE
;
636 /* Below are the cases which cannot be moved into tables easily. */
638 if (!ctx
->Mesa_DXTn
&& !st_get_s3tc_override()) {
639 ctx
->Extensions
.EXT_texture_compression_s3tc
= GL_FALSE
;
640 ctx
->Extensions
.ANGLE_texture_compression_dxt
= GL_FALSE
;
643 if (screen
->get_shader_param(screen
, PIPE_SHADER_GEOMETRY
,
644 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
645 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
646 ctx
->Extensions
.ARB_geometry_shader4
= GL_TRUE
;
650 ctx
->Extensions
.NV_primitive_restart
= GL_TRUE
;
651 if (!screen
->get_param(screen
, PIPE_CAP_PRIMITIVE_RESTART
)) {
652 ctx
->Const
.PrimitiveRestartInSoftware
= GL_TRUE
;
655 /* ARB_color_buffer_float. */
656 if (screen
->get_param(screen
, PIPE_CAP_VERTEX_COLOR_UNCLAMPED
)) {
657 ctx
->Extensions
.ARB_color_buffer_float
= GL_TRUE
;
659 if (!screen
->get_param(screen
, PIPE_CAP_VERTEX_COLOR_CLAMPED
)) {
660 st
->clamp_vert_color_in_shader
= TRUE
;
663 if (!screen
->get_param(screen
, PIPE_CAP_FRAGMENT_COLOR_CLAMPED
)) {
664 st
->clamp_frag_color_in_shader
= TRUE
;
667 /* For drivers which cannot do color clamping, it's better to just
668 * disable ARB_color_buffer_float in the core profile, because
669 * the clamping is deprecated there anyway. */
670 if (ctx
->API
== API_OPENGL_CORE
&&
671 (st
->clamp_frag_color_in_shader
|| st
->clamp_vert_color_in_shader
)) {
672 st
->clamp_vert_color_in_shader
= GL_FALSE
;
673 st
->clamp_frag_color_in_shader
= GL_FALSE
;
674 ctx
->Extensions
.ARB_color_buffer_float
= GL_FALSE
;
678 if (screen
->fence_finish
) {
679 ctx
->Extensions
.ARB_sync
= GL_TRUE
;
682 /* Maximum sample count. */
683 for (i
= 16; i
> 0; --i
) {
684 enum pipe_format pformat
= st_choose_format(st
, GL_RGBA
,
687 PIPE_BIND_RENDER_TARGET
, FALSE
);
688 if (pformat
!= PIPE_FORMAT_NONE
) {
689 ctx
->Const
.MaxSamples
= i
;
690 ctx
->Const
.MaxColorTextureSamples
= i
;
694 for (i
= ctx
->Const
.MaxSamples
; i
> 0; --i
) {
695 enum pipe_format pformat
= st_choose_format(st
, GL_DEPTH_STENCIL
,
698 PIPE_BIND_DEPTH_STENCIL
, FALSE
);
699 if (pformat
!= PIPE_FORMAT_NONE
) {
700 ctx
->Const
.MaxDepthTextureSamples
= i
;
704 for (i
= ctx
->Const
.MaxSamples
; i
> 0; --i
) {
705 enum pipe_format pformat
= st_choose_format(st
, GL_RGBA_INTEGER
,
708 PIPE_BIND_RENDER_TARGET
, FALSE
);
709 if (pformat
!= PIPE_FORMAT_NONE
) {
710 ctx
->Const
.MaxIntegerSamples
= i
;
714 if (ctx
->Const
.MaxSamples
== 1) {
715 /* one sample doesn't really make sense */
716 ctx
->Const
.MaxSamples
= 0;
718 else if (ctx
->Const
.MaxSamples
>= 2) {
719 ctx
->Extensions
.EXT_framebuffer_multisample
= GL_TRUE
;
722 if (ctx
->Const
.MaxDualSourceDrawBuffers
> 0)
723 ctx
->Extensions
.ARB_blend_func_extended
= GL_TRUE
;
725 st
->has_time_elapsed
=
726 screen
->get_param(screen
, PIPE_CAP_QUERY_TIME_ELAPSED
);
728 if (st
->has_time_elapsed
||
729 ctx
->Extensions
.ARB_timer_query
) {
730 ctx
->Extensions
.EXT_timer_query
= GL_TRUE
;
733 if (ctx
->Extensions
.ARB_transform_feedback2
&&
734 ctx
->Extensions
.ARB_draw_instanced
) {
735 ctx
->Extensions
.ARB_transform_feedback_instanced
= GL_TRUE
;
737 if (st
->options
.force_glsl_extensions_warn
)
738 ctx
->Const
.ForceGLSLExtensionsWarn
= 1;
740 if (st
->options
.disable_glsl_line_continuations
)
741 ctx
->Const
.DisableGLSLLineContinuations
= 1;
743 ctx
->Const
.MinMapBufferAlignment
=
744 screen
->get_param(screen
, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT
);
745 if (ctx
->Const
.MinMapBufferAlignment
>= 64) {
746 ctx
->Extensions
.ARB_map_buffer_alignment
= GL_TRUE
;
748 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OBJECTS
)) {
749 ctx
->Extensions
.ARB_texture_buffer_object
= GL_TRUE
;
751 ctx
->Const
.TextureBufferOffsetAlignment
=
752 screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT
);
754 if (ctx
->Const
.TextureBufferOffsetAlignment
)
755 ctx
->Extensions
.ARB_texture_buffer_range
= GL_TRUE
;
757 init_format_extensions(st
, tbo_rgb32
, Elements(tbo_rgb32
),
758 PIPE_BUFFER
, PIPE_BIND_SAMPLER_VIEW
);
762 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
763 * If the number of available texture indirections is very limited, then we
764 * prefer to disable varying packing rather than run the risk of varying
765 * packing preventing a shader from running.
767 if (screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
768 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
) <= 8) {
769 /* We can't disable varying packing if transform feedback is available,
770 * because transform feedback code assumes a packed varying layout.
772 if (!ctx
->Extensions
.EXT_transform_feedback
)
773 ctx
->Const
.DisableVaryingPacking
= GL_TRUE
;