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"
38 #include "st_context.h"
39 #include "st_extensions.h"
40 #include "st_format.h"
44 * Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
45 * avoid evaluating arguments (which are often function calls) more than once.
48 static unsigned _min(unsigned a
, unsigned b
)
50 return (a
< b
) ? a
: b
;
53 static float _maxf(float a
, float b
)
55 return (a
> b
) ? a
: b
;
58 static int _clamp(int a
, int min
, int max
)
70 * Query driver to get implementation limits.
71 * Note that we have to limit/clamp against Mesa's internal limits too.
73 void st_init_limits(struct pipe_screen
*screen
,
74 struct gl_constants
*c
, struct gl_extensions
*extensions
)
77 boolean can_ubo
= TRUE
;
80 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
),
84 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_3D_LEVELS
),
85 MAX_3D_TEXTURE_LEVELS
);
87 c
->MaxCubeTextureLevels
88 = _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS
),
89 MAX_CUBE_TEXTURE_LEVELS
);
92 = _min(1 << (c
->MaxTextureLevels
- 1), MAX_TEXTURE_RECT_SIZE
);
94 c
->MaxArrayTextureLayers
95 = screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
);
97 /* Define max viewport size and max renderbuffer size in terms of
98 * max texture size (note: max tex RECT size = max tex 2D size).
99 * If this isn't true for some hardware we'll need new PIPE_CAP_ queries.
101 c
->MaxViewportWidth
=
102 c
->MaxViewportHeight
=
103 c
->MaxRenderbufferSize
= c
->MaxTextureRectSize
;
105 c
->MaxDrawBuffers
= c
->MaxColorAttachments
=
106 _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
107 1, MAX_DRAW_BUFFERS
);
109 c
->MaxDualSourceDrawBuffers
110 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS
),
111 0, MAX_DRAW_BUFFERS
);
114 = _maxf(1.0f
, screen
->get_paramf(screen
,
115 PIPE_CAPF_MAX_LINE_WIDTH
));
117 = _maxf(1.0f
, screen
->get_paramf(screen
,
118 PIPE_CAPF_MAX_LINE_WIDTH_AA
));
121 = _maxf(1.0f
, screen
->get_paramf(screen
,
122 PIPE_CAPF_MAX_POINT_WIDTH
));
124 = _maxf(1.0f
, screen
->get_paramf(screen
,
125 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
134 = _maxf(2.0f
, screen
->get_paramf(screen
,
135 PIPE_CAPF_MAX_TEXTURE_ANISOTROPY
));
138 = screen
->get_paramf(screen
, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS
);
140 c
->QuadsFollowProvokingVertexConvention
= screen
->get_param(
141 screen
, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION
);
143 c
->MaxUniformBlockSize
=
144 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
145 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE
);
146 if (c
->MaxUniformBlockSize
< 16384) {
150 for (sh
= 0; sh
< PIPE_SHADER_TYPES
; ++sh
) {
151 struct gl_shader_compiler_options
*options
;
152 struct gl_program_constants
*pc
;
155 case PIPE_SHADER_FRAGMENT
:
156 pc
= &c
->Program
[MESA_SHADER_FRAGMENT
];
157 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_FRAGMENT
];
159 case PIPE_SHADER_VERTEX
:
160 pc
= &c
->Program
[MESA_SHADER_VERTEX
];
161 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_VERTEX
];
163 case PIPE_SHADER_GEOMETRY
:
164 pc
= &c
->Program
[MESA_SHADER_GEOMETRY
];
165 options
= &c
->ShaderCompilerOptions
[MESA_SHADER_GEOMETRY
];
168 /* compute shader, etc. */
172 pc
->MaxTextureImageUnits
=
173 _min(screen
->get_shader_param(screen
, sh
,
174 PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS
),
175 MAX_TEXTURE_IMAGE_UNITS
);
177 pc
->MaxInstructions
= pc
->MaxNativeInstructions
=
178 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
179 pc
->MaxAluInstructions
= pc
->MaxNativeAluInstructions
=
180 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS
);
181 pc
->MaxTexInstructions
= pc
->MaxNativeTexInstructions
=
182 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS
);
183 pc
->MaxTexIndirections
= pc
->MaxNativeTexIndirections
=
184 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
);
185 pc
->MaxAttribs
= pc
->MaxNativeAttribs
=
186 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
);
187 pc
->MaxTemps
= pc
->MaxNativeTemps
=
188 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEMPS
);
189 pc
->MaxAddressRegs
= pc
->MaxNativeAddressRegs
=
190 sh
== PIPE_SHADER_VERTEX
? 1 : 0;
191 pc
->MaxParameters
= pc
->MaxNativeParameters
=
192 screen
->get_shader_param(screen
, sh
,
193 PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE
) / sizeof(float[4]);
195 pc
->MaxUniformComponents
= 4 * MIN2(pc
->MaxNativeParameters
, MAX_UNIFORMS
);
197 pc
->MaxUniformBlocks
=
198 screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONST_BUFFERS
);
199 if (pc
->MaxUniformBlocks
)
200 pc
->MaxUniformBlocks
-= 1; /* The first one is for ordinary uniforms. */
201 pc
->MaxUniformBlocks
= _min(pc
->MaxUniformBlocks
, MAX_UNIFORM_BUFFERS
);
203 pc
->MaxCombinedUniformComponents
= (pc
->MaxUniformComponents
+
204 c
->MaxUniformBlockSize
/ 4 *
205 pc
->MaxUniformBlocks
);
207 /* Gallium doesn't really care about local vs. env parameters so use the
210 pc
->MaxLocalParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_LOCAL_PARAMS
);
211 pc
->MaxEnvParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_ENV_PARAMS
);
213 options
->EmitNoNoise
= TRUE
;
215 /* TODO: make these more fine-grained if anyone needs it */
216 options
->MaxIfDepth
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
217 options
->EmitNoLoops
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
218 options
->EmitNoFunctions
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
219 options
->EmitNoMainReturn
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
221 options
->EmitNoCont
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED
);
223 options
->EmitNoIndirectInput
= !screen
->get_shader_param(screen
, sh
,
224 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR
);
225 options
->EmitNoIndirectOutput
= !screen
->get_shader_param(screen
, sh
,
226 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR
);
227 options
->EmitNoIndirectTemp
= !screen
->get_shader_param(screen
, sh
,
228 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR
);
229 options
->EmitNoIndirectUniform
= !screen
->get_shader_param(screen
, sh
,
230 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR
);
232 if (pc
->MaxNativeInstructions
&&
233 (options
->EmitNoIndirectUniform
|| pc
->MaxUniformBlocks
< 12)) {
237 if (options
->EmitNoLoops
)
238 options
->MaxUnrollIterations
= MIN2(screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
), 65536);
240 options
->MaxUnrollIterations
= 255; /* SM3 limit */
241 options
->LowerClipDistance
= true;
244 c
->MaxCombinedTextureImageUnits
=
245 _min(c
->Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
246 c
->Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
247 c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
,
248 MAX_COMBINED_TEXTURE_IMAGE_UNITS
);
250 /* This depends on program constants. */
251 c
->MaxTextureCoordUnits
252 = _min(c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
, MAX_TEXTURE_COORD_UNITS
);
254 c
->MaxTextureUnits
= _min(c
->Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
, c
->MaxTextureCoordUnits
);
256 c
->Program
[MESA_SHADER_VERTEX
].MaxAttribs
= MIN2(c
->Program
[MESA_SHADER_VERTEX
].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
->Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= c
->MaxVarying
* 4;
264 c
->Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= c
->MaxVarying
* 4;
265 c
->Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= c
->MaxVarying
* 4;
266 c
->Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= c
->MaxVarying
* 4;
267 c
->MaxGeometryOutputVertices
= screen
->get_param(screen
, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES
);
268 c
->MaxGeometryTotalOutputComponents
= screen
->get_param(screen
, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS
);
270 c
->MinProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MIN_TEXEL_OFFSET
);
271 c
->MaxProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MAX_TEXEL_OFFSET
);
273 c
->MaxProgramTextureGatherComponents
= screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS
);
274 c
->MinProgramTextureGatherOffset
= screen
->get_param(screen
, PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET
);
275 c
->MaxProgramTextureGatherOffset
= screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET
);
277 c
->UniformBooleanTrue
= ~0;
279 c
->MaxTransformFeedbackBuffers
=
280 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
);
281 c
->MaxTransformFeedbackBuffers
= MIN2(c
->MaxTransformFeedbackBuffers
, MAX_FEEDBACK_BUFFERS
);
282 c
->MaxTransformFeedbackSeparateComponents
=
283 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS
);
284 c
->MaxTransformFeedbackInterleavedComponents
=
285 screen
->get_param(screen
, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS
);
286 c
->MaxVertexStreams
=
287 MAX2(1, screen
->get_param(screen
, PIPE_CAP_MAX_VERTEX_STREAMS
));
289 /* The vertex stream must fit into pipe_stream_output_info::stream */
290 assert(c
->MaxVertexStreams
<= 4);
292 c
->StripTextureBorder
= GL_TRUE
;
294 c
->GLSLSkipStrictMaxUniformLimitCheck
=
295 screen
->get_param(screen
, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS
);
298 extensions
->ARB_uniform_buffer_object
= GL_TRUE
;
299 c
->UniformBufferOffsetAlignment
=
300 screen
->get_param(screen
, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT
);
301 c
->MaxCombinedUniformBlocks
= c
->MaxUniformBufferBindings
=
302 c
->Program
[MESA_SHADER_VERTEX
].MaxUniformBlocks
+
303 c
->Program
[MESA_SHADER_GEOMETRY
].MaxUniformBlocks
+
304 c
->Program
[MESA_SHADER_FRAGMENT
].MaxUniformBlocks
;
305 assert(c
->MaxCombinedUniformBlocks
<= MAX_COMBINED_UNIFORM_BUFFERS
);
311 * Given a member \c x of struct gl_extensions, return offset of
314 #define o(x) offsetof(struct gl_extensions, x)
317 struct st_extension_cap_mapping
{
318 int extension_offset
;
322 struct st_extension_format_mapping
{
323 int extension_offset
[2];
324 enum pipe_format format
[8];
326 /* If TRUE, at least one format must be supported for the extensions to be
327 * advertised. If FALSE, all the formats must be supported. */
328 GLboolean need_at_least_one
;
332 * Enable extensions if certain pipe formats are supported by the driver.
333 * What extensions will be enabled and what formats must be supported is
334 * described by the array of st_extension_format_mapping.
336 * target and bind_flags are passed to is_format_supported.
339 init_format_extensions(struct pipe_screen
*screen
,
340 struct gl_extensions
*extensions
,
341 const struct st_extension_format_mapping
*mapping
,
342 unsigned num_mappings
,
343 enum pipe_texture_target target
,
346 GLboolean
*extension_table
= (GLboolean
*) extensions
;
349 int num_formats
= Elements(mapping
->format
);
350 int num_ext
= Elements(mapping
->extension_offset
);
352 for (i
= 0; i
< num_mappings
; i
++) {
353 int num_supported
= 0;
355 /* Examine each format in the list. */
356 for (j
= 0; j
< num_formats
&& mapping
[i
].format
[j
]; j
++) {
357 if (screen
->is_format_supported(screen
, mapping
[i
].format
[j
],
358 target
, 0, bind_flags
)) {
363 if (!num_supported
||
364 (!mapping
[i
].need_at_least_one
&& num_supported
!= j
)) {
368 /* Enable all extensions in the list. */
369 for (j
= 0; j
< num_ext
&& mapping
[i
].extension_offset
[j
]; j
++)
370 extension_table
[mapping
[i
].extension_offset
[j
]] = GL_TRUE
;
376 * Given a list of formats and bind flags, return the maximum number
377 * of samples supported by any of those formats.
380 get_max_samples_for_formats(struct pipe_screen
*screen
,
381 unsigned num_formats
,
382 enum pipe_format
*formats
,
383 unsigned max_samples
,
388 for (i
= max_samples
; i
> 0; --i
) {
389 for (f
= 0; f
< num_formats
; f
++) {
390 if (screen
->is_format_supported(screen
, formats
[f
],
391 PIPE_TEXTURE_2D
, i
, bind
)) {
401 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
402 * which GL extensions are supported.
403 * Quite a few extensions are always supported because they are standard
404 * features or can be built on top of other gallium features.
405 * Some fine tuning may still be needed.
407 void st_init_extensions(struct pipe_screen
*screen
,
409 struct gl_constants
*consts
,
410 struct gl_extensions
*extensions
,
411 struct st_config_options
*options
,
412 boolean has_lib_dxtc
)
414 int i
, glsl_feature_level
;
415 GLboolean
*extension_table
= (GLboolean
*) extensions
;
417 static const struct st_extension_cap_mapping cap_mapping
[] = {
418 { o(ARB_base_instance
), PIPE_CAP_START_INSTANCE
},
419 { o(ARB_buffer_storage
), PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT
},
420 { o(ARB_depth_clamp
), PIPE_CAP_DEPTH_CLIP_DISABLE
},
421 { o(ARB_depth_texture
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
422 { o(ARB_draw_buffers_blend
), PIPE_CAP_INDEP_BLEND_FUNC
},
423 { o(ARB_draw_instanced
), PIPE_CAP_TGSI_INSTANCEID
},
424 { o(ARB_fragment_program_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
425 { o(ARB_instanced_arrays
), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR
},
426 { o(ARB_occlusion_query
), PIPE_CAP_OCCLUSION_QUERY
},
427 { o(ARB_occlusion_query2
), PIPE_CAP_OCCLUSION_QUERY
},
428 { o(ARB_point_sprite
), PIPE_CAP_POINT_SPRITE
},
429 { o(ARB_seamless_cube_map
), PIPE_CAP_SEAMLESS_CUBE_MAP
},
430 { o(ARB_shader_stencil_export
), PIPE_CAP_SHADER_STENCIL_EXPORT
},
431 { o(ARB_shader_texture_lod
), PIPE_CAP_SM3
},
432 { o(ARB_shadow
), PIPE_CAP_TEXTURE_SHADOW_MAP
},
433 { o(ARB_texture_mirror_clamp_to_edge
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
434 { o(ARB_texture_non_power_of_two
), PIPE_CAP_NPOT_TEXTURES
},
435 { o(ARB_timer_query
), PIPE_CAP_QUERY_TIMESTAMP
},
436 { o(ARB_transform_feedback2
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
437 { o(ARB_transform_feedback3
), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME
},
439 { o(EXT_blend_equation_separate
), PIPE_CAP_BLEND_EQUATION_SEPARATE
},
440 { o(EXT_draw_buffers2
), PIPE_CAP_INDEP_BLEND_ENABLE
},
441 { o(EXT_stencil_two_side
), PIPE_CAP_TWO_SIDED_STENCIL
},
442 { o(EXT_texture_array
), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
},
443 { o(EXT_texture_filter_anisotropic
), PIPE_CAP_ANISOTROPIC_FILTER
},
444 { o(EXT_texture_mirror_clamp
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
445 { o(EXT_texture_swizzle
), PIPE_CAP_TEXTURE_SWIZZLE
},
446 { o(EXT_transform_feedback
), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS
},
448 { o(AMD_seamless_cubemap_per_texture
), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE
},
449 { o(ATI_separate_stencil
), PIPE_CAP_TWO_SIDED_STENCIL
},
450 { o(ATI_texture_mirror_once
), PIPE_CAP_TEXTURE_MIRROR_CLAMP
},
451 { o(NV_conditional_render
), PIPE_CAP_CONDITIONAL_RENDER
},
452 { o(NV_texture_barrier
), PIPE_CAP_TEXTURE_BARRIER
},
453 /* GL_NV_point_sprite is not supported by gallium because we don't
454 * support the GL_POINT_SPRITE_R_MODE_NV option. */
456 { o(OES_standard_derivatives
), PIPE_CAP_SM3
},
457 { o(ARB_texture_cube_map_array
), PIPE_CAP_CUBE_MAP_ARRAY
},
458 { o(ARB_texture_multisample
), PIPE_CAP_TEXTURE_MULTISAMPLE
},
459 { o(ARB_texture_query_lod
), PIPE_CAP_TEXTURE_QUERY_LOD
},
460 { o(ARB_sample_shading
), PIPE_CAP_SAMPLE_SHADING
},
461 { o(ARB_draw_indirect
), PIPE_CAP_DRAW_INDIRECT
},
462 { o(ARB_derivative_control
), PIPE_CAP_TGSI_FS_FINE_DERIVATIVE
},
463 { o(ARB_conditional_render_inverted
), PIPE_CAP_CONDITIONAL_RENDER_INVERTED
},
466 /* Required: render target and sampler support */
467 static const struct st_extension_format_mapping rendertarget_mapping
[] = {
468 { { o(ARB_texture_float
) },
469 { PIPE_FORMAT_R32G32B32A32_FLOAT
,
470 PIPE_FORMAT_R16G16B16A16_FLOAT
} },
472 { { o(ARB_texture_rgb10_a2ui
) },
473 { PIPE_FORMAT_R10G10B10A2_UINT
,
474 PIPE_FORMAT_B10G10R10A2_UINT
},
475 GL_TRUE
}, /* at least one format must be supported */
477 { { o(EXT_framebuffer_sRGB
) },
478 { PIPE_FORMAT_A8B8G8R8_SRGB
,
479 PIPE_FORMAT_B8G8R8A8_SRGB
},
480 GL_TRUE
}, /* at least one format must be supported */
482 { { o(EXT_packed_float
) },
483 { PIPE_FORMAT_R11G11B10_FLOAT
} },
485 { { o(EXT_texture_integer
) },
486 { PIPE_FORMAT_R32G32B32A32_UINT
,
487 PIPE_FORMAT_R32G32B32A32_SINT
} },
489 { { o(ARB_texture_rg
) },
490 { PIPE_FORMAT_R8_UNORM
,
491 PIPE_FORMAT_R8G8_UNORM
} },
494 /* Required: depth stencil and sampler support */
495 static const struct st_extension_format_mapping depthstencil_mapping
[] = {
496 { { o(ARB_depth_buffer_float
) },
497 { PIPE_FORMAT_Z32_FLOAT
,
498 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
} },
501 /* Required: sampler support */
502 static const struct st_extension_format_mapping texture_mapping
[] = {
503 { { o(ARB_texture_compression_rgtc
) },
504 { PIPE_FORMAT_RGTC1_UNORM
,
505 PIPE_FORMAT_RGTC1_SNORM
,
506 PIPE_FORMAT_RGTC2_UNORM
,
507 PIPE_FORMAT_RGTC2_SNORM
} },
509 { { o(EXT_texture_compression_latc
) },
510 { PIPE_FORMAT_LATC1_UNORM
,
511 PIPE_FORMAT_LATC1_SNORM
,
512 PIPE_FORMAT_LATC2_UNORM
,
513 PIPE_FORMAT_LATC2_SNORM
} },
515 { { o(EXT_texture_compression_s3tc
),
516 o(ANGLE_texture_compression_dxt
) },
517 { PIPE_FORMAT_DXT1_RGB
,
518 PIPE_FORMAT_DXT1_RGBA
,
519 PIPE_FORMAT_DXT3_RGBA
,
520 PIPE_FORMAT_DXT5_RGBA
} },
522 { { o(ARB_texture_compression_bptc
) },
523 { PIPE_FORMAT_BPTC_RGBA_UNORM
,
524 PIPE_FORMAT_BPTC_SRGBA
,
525 PIPE_FORMAT_BPTC_RGB_FLOAT
,
526 PIPE_FORMAT_BPTC_RGB_UFLOAT
} },
528 { { o(EXT_texture_shared_exponent
) },
529 { PIPE_FORMAT_R9G9B9E5_FLOAT
} },
531 { { o(EXT_texture_snorm
) },
532 { PIPE_FORMAT_R8G8B8A8_SNORM
} },
534 { { o(EXT_texture_sRGB
),
535 o(EXT_texture_sRGB_decode
) },
536 { PIPE_FORMAT_A8B8G8R8_SRGB
,
537 PIPE_FORMAT_B8G8R8A8_SRGB
},
538 GL_TRUE
}, /* at least one format must be supported */
540 { { o(ATI_texture_compression_3dc
) },
541 { PIPE_FORMAT_LATC2_UNORM
} },
543 { { o(MESA_ycbcr_texture
) },
546 GL_TRUE
}, /* at least one format must be supported */
548 { { o(OES_compressed_ETC1_RGB8_texture
) },
549 { PIPE_FORMAT_ETC1_RGB8
,
550 PIPE_FORMAT_R8G8B8A8_UNORM
},
551 GL_TRUE
}, /* at least one format must be supported */
553 { { o(ARB_stencil_texturing
) },
554 { PIPE_FORMAT_X24S8_UINT
,
555 PIPE_FORMAT_S8X24_UINT
},
556 GL_TRUE
}, /* at least one format must be supported */
559 /* Required: vertex fetch support. */
560 static const struct st_extension_format_mapping vertex_mapping
[] = {
561 { { o(ARB_vertex_type_2_10_10_10_rev
) },
562 { PIPE_FORMAT_R10G10B10A2_UNORM
,
563 PIPE_FORMAT_B10G10R10A2_UNORM
,
564 PIPE_FORMAT_R10G10B10A2_SNORM
,
565 PIPE_FORMAT_B10G10R10A2_SNORM
,
566 PIPE_FORMAT_R10G10B10A2_USCALED
,
567 PIPE_FORMAT_B10G10R10A2_USCALED
,
568 PIPE_FORMAT_R10G10B10A2_SSCALED
,
569 PIPE_FORMAT_B10G10R10A2_SSCALED
} },
570 { { o(ARB_vertex_type_10f_11f_11f_rev
) },
571 { PIPE_FORMAT_R11G11B10_FLOAT
} },
574 static const struct st_extension_format_mapping tbo_rgb32
[] = {
575 { {o(ARB_texture_buffer_object_rgb32
) },
576 { PIPE_FORMAT_R32G32B32_FLOAT
,
577 PIPE_FORMAT_R32G32B32_UINT
,
578 PIPE_FORMAT_R32G32B32_SINT
,
583 * Extensions that are supported by all Gallium drivers:
585 extensions
->ARB_ES2_compatibility
= GL_TRUE
;
586 extensions
->ARB_draw_elements_base_vertex
= GL_TRUE
;
587 extensions
->ARB_explicit_attrib_location
= GL_TRUE
;
588 extensions
->ARB_explicit_uniform_location
= GL_TRUE
;
589 extensions
->ARB_fragment_coord_conventions
= GL_TRUE
;
590 extensions
->ARB_fragment_program
= GL_TRUE
;
591 extensions
->ARB_fragment_shader
= GL_TRUE
;
592 extensions
->ARB_half_float_vertex
= GL_TRUE
;
593 extensions
->ARB_internalformat_query
= GL_TRUE
;
594 extensions
->ARB_map_buffer_range
= GL_TRUE
;
595 extensions
->ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
596 extensions
->ARB_texture_cube_map
= GL_TRUE
;
597 extensions
->ARB_texture_env_combine
= GL_TRUE
;
598 extensions
->ARB_texture_env_crossbar
= GL_TRUE
;
599 extensions
->ARB_texture_env_dot3
= GL_TRUE
;
600 extensions
->ARB_vertex_program
= GL_TRUE
;
601 extensions
->ARB_vertex_shader
= GL_TRUE
;
603 extensions
->EXT_blend_color
= GL_TRUE
;
604 extensions
->EXT_blend_func_separate
= GL_TRUE
;
605 extensions
->EXT_blend_minmax
= GL_TRUE
;
606 extensions
->EXT_gpu_program_parameters
= GL_TRUE
;
607 extensions
->EXT_pixel_buffer_object
= GL_TRUE
;
608 extensions
->EXT_point_parameters
= GL_TRUE
;
609 extensions
->EXT_provoking_vertex
= GL_TRUE
;
611 extensions
->EXT_texture_env_dot3
= GL_TRUE
;
612 extensions
->EXT_vertex_array_bgra
= GL_TRUE
;
614 extensions
->ATI_texture_env_combine3
= GL_TRUE
;
616 extensions
->MESA_pack_invert
= GL_TRUE
;
618 extensions
->NV_fog_distance
= GL_TRUE
;
619 extensions
->NV_texture_env_combine4
= GL_TRUE
;
620 extensions
->NV_texture_rectangle
= GL_TRUE
;
621 extensions
->NV_vdpau_interop
= GL_TRUE
;
623 extensions
->OES_EGL_image
= GL_TRUE
;
624 extensions
->OES_EGL_image_external
= GL_TRUE
;
625 extensions
->OES_draw_texture
= GL_TRUE
;
627 /* Expose the extensions which directly correspond to gallium caps. */
628 for (i
= 0; i
< Elements(cap_mapping
); i
++) {
629 if (screen
->get_param(screen
, cap_mapping
[i
].cap
)) {
630 extension_table
[cap_mapping
[i
].extension_offset
] = GL_TRUE
;
634 /* Expose the extensions which directly correspond to gallium formats. */
635 init_format_extensions(screen
, extensions
, rendertarget_mapping
,
636 Elements(rendertarget_mapping
), PIPE_TEXTURE_2D
,
637 PIPE_BIND_RENDER_TARGET
| PIPE_BIND_SAMPLER_VIEW
);
638 init_format_extensions(screen
, extensions
, depthstencil_mapping
,
639 Elements(depthstencil_mapping
), PIPE_TEXTURE_2D
,
640 PIPE_BIND_DEPTH_STENCIL
| PIPE_BIND_SAMPLER_VIEW
);
641 init_format_extensions(screen
, extensions
, texture_mapping
,
642 Elements(texture_mapping
), PIPE_TEXTURE_2D
,
643 PIPE_BIND_SAMPLER_VIEW
);
644 init_format_extensions(screen
, extensions
, vertex_mapping
,
645 Elements(vertex_mapping
), PIPE_BUFFER
,
646 PIPE_BIND_VERTEX_BUFFER
);
648 /* Figure out GLSL support. */
649 glsl_feature_level
= screen
->get_param(screen
, PIPE_CAP_GLSL_FEATURE_LEVEL
);
651 consts
->GLSLVersion
= glsl_feature_level
;
652 if (glsl_feature_level
>= 330)
653 consts
->GLSLVersion
= 330;
655 _mesa_override_glsl_version(consts
);
657 if (options
->force_glsl_version
> 0 &&
658 options
->force_glsl_version
<= consts
->GLSLVersion
) {
659 consts
->ForceGLSLVersion
= options
->force_glsl_version
;
662 if (glsl_feature_level
>= 400)
663 extensions
->ARB_gpu_shader5
= GL_TRUE
;
665 /* This extension needs full OpenGL 3.2, but we don't know if that's
666 * supported at this point. Only check the GLSL version. */
667 if (consts
->GLSLVersion
>= 150 &&
668 screen
->get_param(screen
, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT
)) {
669 extensions
->AMD_vertex_shader_layer
= GL_TRUE
;
672 if (consts
->GLSLVersion
>= 130) {
673 consts
->NativeIntegers
= GL_TRUE
;
674 consts
->MaxClipPlanes
= 8;
676 /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
677 extensions
->ARB_conservative_depth
= GL_TRUE
;
678 extensions
->ARB_shading_language_packing
= GL_TRUE
;
679 extensions
->OES_depth_texture_cube_map
= GL_TRUE
;
680 extensions
->ARB_shading_language_420pack
= GL_TRUE
;
681 extensions
->ARB_texture_query_levels
= GL_TRUE
;
683 if (!options
->disable_shader_bit_encoding
) {
684 extensions
->ARB_shader_bit_encoding
= GL_TRUE
;
687 extensions
->EXT_shader_integer_mix
= GL_TRUE
;
689 /* Optional integer support for GLSL 1.2. */
690 if (screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
691 PIPE_SHADER_CAP_INTEGERS
) &&
692 screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
693 PIPE_SHADER_CAP_INTEGERS
)) {
694 consts
->NativeIntegers
= GL_TRUE
;
696 extensions
->EXT_shader_integer_mix
= GL_TRUE
;
700 /* Below are the cases which cannot be moved into tables easily. */
702 if (!has_lib_dxtc
&& !options
->force_s3tc_enable
) {
703 extensions
->EXT_texture_compression_s3tc
= GL_FALSE
;
704 extensions
->ANGLE_texture_compression_dxt
= GL_FALSE
;
707 if (screen
->get_shader_param(screen
, PIPE_SHADER_GEOMETRY
,
708 PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
709 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
710 extensions
->ARB_geometry_shader4
= GL_TRUE
;
714 extensions
->NV_primitive_restart
= GL_TRUE
;
715 if (!screen
->get_param(screen
, PIPE_CAP_PRIMITIVE_RESTART
)) {
716 consts
->PrimitiveRestartInSoftware
= GL_TRUE
;
719 /* ARB_color_buffer_float. */
720 if (screen
->get_param(screen
, PIPE_CAP_VERTEX_COLOR_UNCLAMPED
)) {
721 extensions
->ARB_color_buffer_float
= GL_TRUE
;
724 if (screen
->fence_finish
) {
725 extensions
->ARB_sync
= GL_TRUE
;
728 /* Maximum sample count. */
730 enum pipe_format color_formats
[] = {
731 PIPE_FORMAT_R8G8B8A8_UNORM
,
732 PIPE_FORMAT_B8G8R8A8_UNORM
,
733 PIPE_FORMAT_A8R8G8B8_UNORM
,
734 PIPE_FORMAT_A8B8G8R8_UNORM
,
736 enum pipe_format depth_formats
[] = {
737 PIPE_FORMAT_Z16_UNORM
,
738 PIPE_FORMAT_Z24X8_UNORM
,
739 PIPE_FORMAT_X8Z24_UNORM
,
740 PIPE_FORMAT_Z32_UNORM
,
741 PIPE_FORMAT_Z32_FLOAT
743 enum pipe_format int_formats
[] = {
744 PIPE_FORMAT_R8G8B8A8_SINT
748 get_max_samples_for_formats(screen
, Elements(color_formats
),
750 PIPE_BIND_RENDER_TARGET
);
752 consts
->MaxColorTextureSamples
=
753 get_max_samples_for_formats(screen
, Elements(color_formats
),
754 color_formats
, consts
->MaxSamples
,
755 PIPE_BIND_SAMPLER_VIEW
);
757 consts
->MaxDepthTextureSamples
=
758 get_max_samples_for_formats(screen
, Elements(depth_formats
),
759 depth_formats
, consts
->MaxSamples
,
760 PIPE_BIND_SAMPLER_VIEW
);
762 consts
->MaxIntegerSamples
=
763 get_max_samples_for_formats(screen
, Elements(int_formats
),
764 int_formats
, consts
->MaxSamples
,
765 PIPE_BIND_SAMPLER_VIEW
);
767 if (consts
->MaxSamples
== 1) {
768 /* one sample doesn't really make sense */
769 consts
->MaxSamples
= 0;
771 else if (consts
->MaxSamples
>= 2) {
772 extensions
->EXT_framebuffer_multisample
= GL_TRUE
;
773 extensions
->EXT_framebuffer_multisample_blit_scaled
= GL_TRUE
;
776 if (consts
->MaxSamples
== 0 && screen
->get_param(screen
, PIPE_CAP_FAKE_SW_MSAA
)) {
777 consts
->FakeSWMSAA
= GL_TRUE
;
778 extensions
->EXT_framebuffer_multisample
= GL_TRUE
;
779 extensions
->EXT_framebuffer_multisample_blit_scaled
= GL_TRUE
;
780 extensions
->ARB_texture_multisample
= GL_TRUE
;
783 if (consts
->MaxDualSourceDrawBuffers
> 0 &&
784 !options
->disable_blend_func_extended
)
785 extensions
->ARB_blend_func_extended
= GL_TRUE
;
787 if (screen
->get_param(screen
, PIPE_CAP_QUERY_TIME_ELAPSED
) ||
788 extensions
->ARB_timer_query
) {
789 extensions
->EXT_timer_query
= GL_TRUE
;
792 if (extensions
->ARB_transform_feedback2
&&
793 extensions
->ARB_draw_instanced
) {
794 extensions
->ARB_transform_feedback_instanced
= GL_TRUE
;
796 if (options
->force_glsl_extensions_warn
)
797 consts
->ForceGLSLExtensionsWarn
= 1;
799 if (options
->disable_glsl_line_continuations
)
800 consts
->DisableGLSLLineContinuations
= 1;
802 if (options
->allow_glsl_extension_directive_midshader
)
803 consts
->AllowGLSLExtensionDirectiveMidShader
= GL_TRUE
;
805 consts
->MinMapBufferAlignment
=
806 screen
->get_param(screen
, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT
);
808 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OBJECTS
)) {
809 extensions
->ARB_texture_buffer_object
= GL_TRUE
;
811 consts
->MaxTextureBufferSize
=
812 _min(screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE
),
814 consts
->TextureBufferOffsetAlignment
=
815 screen
->get_param(screen
, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT
);
817 if (consts
->TextureBufferOffsetAlignment
)
818 extensions
->ARB_texture_buffer_range
= GL_TRUE
;
820 init_format_extensions(screen
, extensions
, tbo_rgb32
,
821 Elements(tbo_rgb32
), PIPE_BUFFER
,
822 PIPE_BIND_SAMPLER_VIEW
);
825 if (screen
->get_param(screen
, PIPE_CAP_MIXED_FRAMEBUFFER_SIZES
)) {
826 extensions
->ARB_framebuffer_object
= GL_TRUE
;
829 /* Unpacking a varying in the fragment shader costs 1 texture indirection.
830 * If the number of available texture indirections is very limited, then we
831 * prefer to disable varying packing rather than run the risk of varying
832 * packing preventing a shader from running.
834 if (screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
,
835 PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
) <= 8) {
836 /* We can't disable varying packing if transform feedback is available,
837 * because transform feedback code assumes a packed varying layout.
839 if (!extensions
->EXT_transform_feedback
)
840 consts
->DisableVaryingPacking
= GL_TRUE
;
843 if (api
== API_OPENGL_CORE
) {
844 consts
->MaxViewports
= screen
->get_param(screen
, PIPE_CAP_MAX_VIEWPORTS
);
845 if (consts
->MaxViewports
>= 16) {
846 consts
->ViewportBounds
.Min
= -16384.0;
847 consts
->ViewportBounds
.Max
= 16384.0;
848 extensions
->ARB_viewport_array
= GL_TRUE
;
849 extensions
->ARB_fragment_layer_viewport
= GL_TRUE
;
850 if (extensions
->AMD_vertex_shader_layer
)
851 extensions
->AMD_vertex_shader_viewport_index
= GL_TRUE
;
854 if (consts
->MaxProgramTextureGatherComponents
> 0)
855 extensions
->ARB_texture_gather
= GL_TRUE
;
857 /* GL_ARB_ES3_compatibility.
859 * Assume that ES3 is supported if GLSL 3.30 is supported.
860 * (OpenGL 3.3 is a requirement for that extension.)
862 if (consts
->GLSLVersion
>= 330 &&
863 /* Requirements for ETC2 emulation. */
864 screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8B8A8_UNORM
,
866 PIPE_BIND_SAMPLER_VIEW
) &&
867 screen
->is_format_supported(screen
, PIPE_FORMAT_B8G8R8A8_SRGB
,
869 PIPE_BIND_SAMPLER_VIEW
) &&
870 screen
->is_format_supported(screen
, PIPE_FORMAT_R16_UNORM
,
872 PIPE_BIND_SAMPLER_VIEW
) &&
873 screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16_UNORM
,
875 PIPE_BIND_SAMPLER_VIEW
) &&
876 screen
->is_format_supported(screen
, PIPE_FORMAT_R16_SNORM
,
878 PIPE_BIND_SAMPLER_VIEW
) &&
879 screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16_SNORM
,
881 PIPE_BIND_SAMPLER_VIEW
)) {
882 extensions
->ARB_ES3_compatibility
= GL_TRUE
;