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/mfeatures.h"
33 #include "main/version.h"
35 #include "pipe/p_context.h"
36 #include "pipe/p_defines.h"
37 #include "pipe/p_screen.h"
39 #include "st_context.h"
40 #include "st_extensions.h"
43 static int _min(int a
, int b
)
45 return (a
< b
) ? a
: b
;
48 static float _maxf(float a
, float b
)
50 return (a
> b
) ? a
: b
;
53 static int _clamp(int a
, int min
, int max
)
65 * Query driver to get implementation limits.
66 * Note that we have to limit/clamp against Mesa's internal limits too.
68 void st_init_limits(struct st_context
*st
)
70 struct pipe_screen
*screen
= st
->pipe
->screen
;
71 struct gl_constants
*c
= &st
->ctx
->Const
;
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
->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
->MaxVertexTextureImageUnits
98 = _min(screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
99 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS
),
100 MAX_VERTEX_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
->MaxTextureImageUnits
, MAX_TEXTURE_COORD_UNITS
);
109 c
->MaxTextureUnits
= _min(c
->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 for (sh
= 0; sh
< MESA_SHADER_TYPES
; ++sh
) {
165 struct gl_shader_compiler_options
*options
=
166 &st
->ctx
->ShaderCompilerOptions
[sh
];
167 struct gl_program_constants
*pc
;
170 case PIPE_SHADER_FRAGMENT
:
171 pc
= &c
->FragmentProgram
;
173 case PIPE_SHADER_VERTEX
:
174 pc
= &c
->VertexProgram
;
176 case PIPE_SHADER_GEOMETRY
:
177 pc
= &c
->GeometryProgram
;
184 pc
->MaxNativeInstructions
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
185 pc
->MaxNativeAluInstructions
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS
);
186 pc
->MaxNativeTexInstructions
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS
);
187 pc
->MaxNativeTexIndirections
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
);
188 pc
->MaxNativeAttribs
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
);
189 pc
->MaxNativeTemps
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEMPS
);
190 pc
->MaxNativeAddressRegs
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ADDRS
);
191 pc
->MaxNativeParameters
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONSTS
);
192 pc
->MaxUniformComponents
= 4 * MIN2(pc
->MaxNativeParameters
, MAX_UNIFORMS
);
193 /* raise MaxParameters if native support is higher */
194 pc
->MaxParameters
= MAX2(pc
->MaxParameters
, pc
->MaxNativeParameters
);
196 /* Gallium doesn't really care about local vs. env parameters so use the
199 pc
->MaxLocalParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_LOCAL_PARAMS
);
200 pc
->MaxEnvParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_ENV_PARAMS
);
202 options
->EmitNoNoise
= TRUE
;
204 /* TODO: make these more fine-grained if anyone needs it */
205 options
->MaxIfDepth
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
206 options
->EmitNoLoops
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
207 options
->EmitNoFunctions
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
208 options
->EmitNoMainReturn
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
210 options
->EmitNoCont
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED
);
212 options
->EmitNoIndirectInput
= !screen
->get_shader_param(screen
, sh
,
213 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR
);
214 options
->EmitNoIndirectOutput
= !screen
->get_shader_param(screen
, sh
,
215 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR
);
216 options
->EmitNoIndirectTemp
= !screen
->get_shader_param(screen
, sh
,
217 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR
);
218 options
->EmitNoIndirectUniform
= !screen
->get_shader_param(screen
, sh
,
219 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR
);
221 if (options
->EmitNoLoops
)
222 options
->MaxUnrollIterations
= MIN2(screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
), 65536);
224 options
->MaxUnrollIterations
= 255; /* SM3 limit */
225 options
->LowerClipDistance
= true;
228 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
229 * of inputs. It's always 2 colors + N generic inputs. */
230 c
->MaxVarying
= screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
231 PIPE_SHADER_CAP_MAX_INPUTS
);
232 c
->MaxVarying
= MIN2(c
->MaxVarying
, MAX_VARYING
);
234 c
->MinProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MIN_TEXEL_OFFSET
);
235 c
->MaxProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MAX_TEXEL_OFFSET
);
237 c
->UniformBooleanTrue
= ~0;
239 c
->MaxTransformFeedbackBuffers
=
240 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
);
241 c
->MaxTransformFeedbackBuffers
= MIN2(c
->MaxTransformFeedbackBuffers
, MAX_FEEDBACK_BUFFERS
);
242 c
->MaxTransformFeedbackSeparateComponents
=
243 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS
);
244 c
->MaxTransformFeedbackInterleavedComponents
=
245 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS
);
247 c
->StripTextureBorder
= GL_TRUE
;
249 c
->GLSLSkipStrictMaxUniformLimitCheck
=
250 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS
);
252 c
->GLSLSkipStrictMaxVaryingLimitCheck
=
253 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS
);
257 static GLboolean
st_get_s3tc_override(void)
259 const char *override
= _mesa_getenv("force_s3tc_enable");
260 if (override
&& !strcmp(override
, "true"))
266 * Given a member \c x of struct gl_extensions, return offset of
269 #define o(x) offsetof(struct gl_extensions, x)
272 struct st_extension_cap_mapping
{
273 int extension_offset
;
277 struct st_extension_format_mapping
{
278 int extension_offset
[2];
279 enum pipe_format format
[8];
281 /* If TRUE, at least one format must be supported for the extensions to be
282 * advertised. If FALSE, all the formats must be supported. */
283 GLboolean need_at_least_one
;
287 * Enable extensions if certain pipe formats are supported by the driver.
288 * What extensions will be enabled and what formats must be supported is
289 * described by the array of st_extension_format_mapping.
291 * target and bind_flags are passed to is_format_supported.
293 static void init_format_extensions(struct st_context
*st
,
294 const struct st_extension_format_mapping
*mapping
,
295 unsigned num_mappings
,
296 enum pipe_texture_target target
,
299 struct pipe_screen
*screen
= st
->pipe
->screen
;
300 GLboolean
*extensions
= (GLboolean
*) &st
->ctx
->Extensions
;
302 int num_formats
= Elements(mapping
->format
);
303 int num_ext
= Elements(mapping
->extension_offset
);
305 for (i
= 0; i
< num_mappings
; i
++) {
306 int num_supported
= 0;
308 /* Examine each format in the list. */
309 for (j
= 0; j
< num_formats
&& mapping
[i
].format
[j
]; j
++) {
310 if (screen
->is_format_supported(screen
, mapping
[i
].format
[j
],
311 target
, 0, bind_flags
)) {
316 if (!num_supported
||
317 (!mapping
[i
].need_at_least_one
&& num_supported
!= j
)) {
321 /* Enable all extensions in the list. */
322 for (j
= 0; j
< num_ext
&& mapping
[i
].extension_offset
[j
]; j
++)
323 extensions
[mapping
[i
].extension_offset
[j
]] = GL_TRUE
;
328 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
329 * which GL extensions are supported.
330 * Quite a few extensions are always supported because they are standard
331 * features or can be built on top of other gallium features.
332 * Some fine tuning may still be needed.
334 void st_init_extensions(struct st_context
*st
)
336 struct pipe_screen
*screen
= st
->pipe
->screen
;
337 struct gl_context
*ctx
= st
->ctx
;
338 int i
, glsl_feature_level
;
339 GLboolean
*extensions
= (GLboolean
*) &ctx
->Extensions
;
341 static const struct st_extension_cap_mapping cap_mapping
[] = {
342 { o(ARB_base_instance
), PIPE_CAP_START_INSTANCE
},
343 { o(ARB_depth_clamp
), PIPE_CAP_DEPTH_CLIP_DISABLE
},
344 { o(ARB_depth_texture
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
345 { o(ARB_draw_buffers_blend
), PIPE_CAP_INDEP_BLEND_FUNC
},
346 { o(ARB_draw_instanced
), PIPE_CAP_TGSI_INSTANCEID
},
347 { o(ARB_fragment_program_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
348 { o(ARB_instanced_arrays
), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR
},
349 { o(ARB_occlusion_query
), PIPE_CAP_OCCLUSION_QUERY
},
350 { o(ARB_occlusion_query2
), PIPE_CAP_OCCLUSION_QUERY
},
351 { o(ARB_point_sprite
), PIPE_CAP_POINT_SPRITE
},
352 { o(ARB_seamless_cube_map
), PIPE_CAP_SEAMLESS_CUBE_MAP
},
353 { o(ARB_shader_stencil_export
), PIPE_CAP_SHADER_STENCIL_EXPORT
},
354 { o(ARB_shader_texture_lod
), PIPE_CAP_SM3
},
355 { o(ARB_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
356 { o(ARB_texture_non_power_of_two
), PIPE_CAP_NPOT_TEXTURES
},
357 { o(ARB_transform_feedback2
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
359 { o(EXT_blend_equation_separate
), PIPE_CAP_BLEND_EQUATION_SEPARATE
},
360 { o(EXT_draw_buffers2
), PIPE_CAP_INDEP_BLEND_ENABLE
},
361 { o(EXT_shadow_funcs
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
362 { o(EXT_stencil_two_side
), PIPE_CAP_TWO_SIDED_STENCIL
},
363 { o(EXT_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
364 { o(EXT_texture_filter_anisotropic
), PIPE_CAP_ANISOTROPIC_FILTER
},
365 { o(EXT_texture_mirror_clamp
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
366 { o(EXT_texture_swizzle
), PIPE_CAP_TEXTURE_SWIZZLE
},
367 { o(EXT_timer_query
), PIPE_CAP_TIMER_QUERY
},
368 { o(EXT_transform_feedback
), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
},
370 { o(AMD_seamless_cubemap_per_texture
), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE
},
371 { o(ATI_separate_stencil
), PIPE_CAP_TWO_SIDED_STENCIL
},
372 { o(ATI_texture_mirror_once
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
373 { o(NV_conditional_render
), PIPE_CAP_CONDITIONAL_RENDER
},
374 { o(NV_texture_barrier
), PIPE_CAP_TEXTURE_BARRIER
},
375 /* GL_NV_point_sprite is not supported by gallium because we don't
376 * support the GL_POINT_SPRITE_R_MODE_NV option. */
377 { o(MESA_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
380 /* Required: render target and sampler support */
381 static const struct st_extension_format_mapping rendertarget_mapping
[] = {
382 { { o(ARB_texture_float
) },
383 { PIPE_FORMAT_R32G32B32A32_FLOAT
,
384 PIPE_FORMAT_R16G16B16A16_FLOAT
} },
386 { { o(ARB_texture_rgb10_a2ui
) },
387 { PIPE_FORMAT_B10G10R10A2_UINT
} },
389 { { o(EXT_framebuffer_sRGB
) },
390 { PIPE_FORMAT_A8B8G8R8_SRGB
,
391 PIPE_FORMAT_B8G8R8A8_SRGB
},
392 GL_TRUE
}, /* at least one format must be supported */
394 { { o(EXT_packed_float
) },
395 { PIPE_FORMAT_R11G11B10_FLOAT
} },
397 { { o(EXT_texture_integer
) },
398 { PIPE_FORMAT_R32G32B32A32_UINT
,
399 PIPE_FORMAT_R32G32B32A32_SINT
} },
402 /* Required: depth stencil and sampler support */
403 static const struct st_extension_format_mapping depthstencil_mapping
[] = {
404 { { o(ARB_depth_buffer_float
) },
405 { PIPE_FORMAT_Z32_FLOAT
,
406 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
} },
408 { { o(ARB_framebuffer_object
),
409 o(EXT_packed_depth_stencil
) },
410 { PIPE_FORMAT_S8_UINT_Z24_UNORM
,
411 PIPE_FORMAT_Z24_UNORM_S8_UINT
},
412 GL_TRUE
}, /* at least one format must be supported */
415 /* Required: sampler support */
416 static const struct st_extension_format_mapping texture_mapping
[] = {
417 { { o(ARB_texture_compression_rgtc
) },
418 { PIPE_FORMAT_RGTC1_UNORM
,
419 PIPE_FORMAT_RGTC1_SNORM
,
420 PIPE_FORMAT_RGTC2_UNORM
,
421 PIPE_FORMAT_RGTC2_SNORM
} },
423 { { o(ARB_texture_rg
) },
424 { PIPE_FORMAT_R8G8_UNORM
} },
426 { { o(EXT_texture_compression_latc
) },
427 { PIPE_FORMAT_LATC1_UNORM
,
428 PIPE_FORMAT_LATC1_SNORM
,
429 PIPE_FORMAT_LATC2_UNORM
,
430 PIPE_FORMAT_LATC2_SNORM
} },
432 { { o(EXT_texture_compression_s3tc
),
434 { PIPE_FORMAT_DXT1_RGB
,
435 PIPE_FORMAT_DXT1_RGBA
,
436 PIPE_FORMAT_DXT3_RGBA
,
437 PIPE_FORMAT_DXT5_RGBA
} },
439 { { o(EXT_texture_shared_exponent
) },
440 { PIPE_FORMAT_R9G9B9E5_FLOAT
} },
442 { { o(EXT_texture_snorm
) },
443 { PIPE_FORMAT_R8G8B8A8_SNORM
} },
445 { { o(EXT_texture_sRGB
),
446 o(EXT_texture_sRGB_decode
) },
447 { PIPE_FORMAT_A8B8G8R8_SRGB
,
448 PIPE_FORMAT_B8G8R8A8_SRGB
},
449 GL_TRUE
}, /* at least one format must be supported */
451 { { o(ATI_texture_compression_3dc
) },
452 { PIPE_FORMAT_LATC2_UNORM
} },
454 { { o(MESA_ycbcr_texture
) },
457 GL_TRUE
}, /* at least one format must be supported */
459 { { o(OES_compressed_ETC1_RGB8_texture
) },
460 { PIPE_FORMAT_ETC1_RGB8
} },
463 /* Required: vertex fetch support. */
464 static const struct st_extension_format_mapping vertex_mapping
[] = {
465 { { o(ARB_vertex_type_2_10_10_10_rev
) },
466 { PIPE_FORMAT_R10G10B10A2_UNORM
,
467 PIPE_FORMAT_B10G10R10A2_UNORM
,
468 PIPE_FORMAT_R10G10B10A2_SNORM
,
469 PIPE_FORMAT_B10G10R10A2_SNORM
,
470 PIPE_FORMAT_R10G10B10A2_USCALED
,
471 PIPE_FORMAT_B10G10R10A2_USCALED
,
472 PIPE_FORMAT_R10G10B10A2_SSCALED
,
473 PIPE_FORMAT_B10G10R10A2_SSCALED
} },
477 * Extensions that are supported by all Gallium drivers:
479 ctx
->Extensions
.ARB_ES2_compatibility
= GL_TRUE
;
480 ctx
->Extensions
.ARB_copy_buffer
= GL_TRUE
;
481 ctx
->Extensions
.ARB_draw_elements_base_vertex
= GL_TRUE
;
482 ctx
->Extensions
.ARB_explicit_attrib_location
= GL_TRUE
;
483 ctx
->Extensions
.ARB_fragment_coord_conventions
= GL_TRUE
;
484 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
485 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
486 ctx
->Extensions
.ARB_half_float_pixel
= GL_TRUE
;
487 ctx
->Extensions
.ARB_half_float_vertex
= GL_TRUE
;
488 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
489 ctx
->Extensions
.ARB_sampler_objects
= GL_TRUE
;
490 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
491 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
492 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
493 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
494 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
495 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
496 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
497 ctx
->Extensions
.ARB_texture_storage
= GL_TRUE
;
498 ctx
->Extensions
.ARB_vertex_array_object
= GL_TRUE
;
499 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
500 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
501 ctx
->Extensions
.ARB_window_pos
= GL_TRUE
;
503 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
504 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
505 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
506 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
507 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
508 ctx
->Extensions
.EXT_framebuffer_multisample
= GL_TRUE
;
509 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
510 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
511 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
512 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
513 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
514 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
515 ctx
->Extensions
.EXT_separate_shader_objects
= GL_TRUE
;
516 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
517 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
519 ctx
->Extensions
.APPLE_vertex_array_object
= GL_TRUE
;
521 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
523 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
525 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
526 ctx
->Extensions
.NV_fog_distance
= GL_TRUE
;
527 ctx
->Extensions
.NV_texgen_reflection
= GL_TRUE
;
528 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
529 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
531 /* possibly could support the following two */
532 ctx
->Extensions
.NV_vertex_program
= GL_TRUE
;
533 ctx
->Extensions
.NV_vertex_program1_1
= GL_TRUE
;
536 #if FEATURE_OES_EGL_image
537 ctx
->Extensions
.OES_EGL_image
= GL_TRUE
;
538 if (ctx
->API
!= API_OPENGL
)
539 ctx
->Extensions
.OES_EGL_image_external
= GL_TRUE
;
541 #if FEATURE_OES_draw_texture
542 ctx
->Extensions
.OES_draw_texture
= GL_TRUE
;
545 /* Expose the extensions which directly correspond to gallium caps. */
546 for (i
= 0; i
< Elements(cap_mapping
); i
++) {
547 if (screen
->get_param(screen
, cap_mapping
[i
].cap
)) {
548 extensions
[cap_mapping
[i
].extension_offset
] = GL_TRUE
;
552 /* Expose the extensions which directly correspond to gallium formats. */
553 init_format_extensions(st
, rendertarget_mapping
,
554 Elements(rendertarget_mapping
), PIPE_TEXTURE_2D
,
555 PIPE_BIND_RENDER_TARGET
| PIPE_BIND_SAMPLER_VIEW
);
556 init_format_extensions(st
, depthstencil_mapping
,
557 Elements(depthstencil_mapping
), PIPE_TEXTURE_2D
,
558 PIPE_BIND_DEPTH_STENCIL
| PIPE_BIND_SAMPLER_VIEW
);
559 init_format_extensions(st
, texture_mapping
, Elements(texture_mapping
),
560 PIPE_TEXTURE_2D
, PIPE_BIND_SAMPLER_VIEW
);
561 init_format_extensions(st
, vertex_mapping
, Elements(vertex_mapping
),
562 PIPE_BUFFER
, PIPE_BIND_VERTEX_BUFFER
);
564 /* Figure out GLSL support. */
565 glsl_feature_level
= screen
->get_param(screen
, PIPE_CAP_GLSL_FEATURE_LEVEL
);
567 if (glsl_feature_level
>= 130) {
568 ctx
->Const
.GLSLVersion
= 130;
570 ctx
->Const
.GLSLVersion
= 120;
573 _mesa_override_glsl_version(st
->ctx
);
575 if (ctx
->Const
.GLSLVersion
>= 130) {
576 ctx
->Const
.NativeIntegers
= GL_TRUE
;
577 ctx
->Const
.MaxClipPlanes
= 8;
579 /* Extensions that only depend on GLSL 1.3. */
580 ctx
->Extensions
.ARB_conservative_depth
= GL_TRUE
;
581 ctx
->Extensions
.ARB_shader_bit_encoding
= GL_TRUE
;
583 /* Optional integer support for GLSL 1.2. */
584 if (screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
585 PIPE_SHADER_CAP_INTEGERS
) &&
586 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
587 PIPE_SHADER_CAP_INTEGERS
)) {
588 ctx
->Const
.NativeIntegers
= GL_TRUE
;
592 /* Below are the cases which cannot be moved into tables easily. */
594 if (!ctx
->Mesa_DXTn
&& !st_get_s3tc_override()) {
595 ctx
->Extensions
.EXT_texture_compression_s3tc
= GL_FALSE
;
596 ctx
->Extensions
.S3_s3tc
= GL_FALSE
;
599 if (screen
->get_shader_param(screen
, PIPE_SHADER_GEOMETRY
,
600 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
601 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
602 ctx
->Extensions
.ARB_geometry_shader4
= GL_TRUE
;
606 ctx
->Extensions
.NV_primitive_restart
= GL_TRUE
;
607 if (!screen
->get_param(screen
, PIPE_CAP_PRIMITIVE_RESTART
)) {
608 ctx
->Const
.PrimitiveRestartInSoftware
= GL_TRUE
;
611 if (screen
->get_param(screen
, PIPE_CAP_VERTEX_COLOR_UNCLAMPED
)) {
612 ctx
->Extensions
.ARB_color_buffer_float
= GL_TRUE
;
614 if (!screen
->get_param(screen
, PIPE_CAP_VERTEX_COLOR_CLAMPED
)) {
615 st
->clamp_vert_color_in_shader
= TRUE
;
618 if (!screen
->get_param(screen
, PIPE_CAP_FRAGMENT_COLOR_CLAMPED
)) {
619 st
->clamp_frag_color_in_shader
= TRUE
;
623 if (screen
->fence_finish
) {
624 ctx
->Extensions
.ARB_sync
= GL_TRUE
;
627 /* Maximum sample count. */
628 for (i
= 16; i
> 0; --i
) {
629 if (screen
->is_format_supported(screen
, PIPE_FORMAT_B8G8R8A8_UNORM
,
631 PIPE_BIND_RENDER_TARGET
)) {
632 ctx
->Const
.MaxSamples
= i
;
637 if (ctx
->Const
.MaxDualSourceDrawBuffers
> 0)
638 ctx
->Extensions
.ARB_blend_func_extended
= GL_TRUE
;