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
);
112 = _clamp(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
113 1, MAX_DRAW_BUFFERS
);
116 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_LINE_WIDTH
));
118 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_LINE_WIDTH_AA
));
121 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_POINT_WIDTH
));
123 = _maxf(1.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_POINT_WIDTH_AA
));
124 /* called after _mesa_create_context/_mesa_init_point, fix default user
125 * settable max point size up
127 st
->ctx
->Point
.MaxSize
= MAX2(c
->MaxPointSize
, c
->MaxPointSizeAA
);
128 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
129 * for non-aa sizes, but we can go down to 0.0 for aa points.
131 c
->MinPointSize
= 1.0f
;
132 c
->MinPointSizeAA
= 0.0f
;
134 c
->MaxTextureMaxAnisotropy
135 = _maxf(2.0f
, screen
->get_paramf(screen
, PIPE_CAP_MAX_TEXTURE_ANISOTROPY
));
138 = screen
->get_paramf(screen
, PIPE_CAP_MAX_TEXTURE_LOD_BIAS
);
141 = CLAMP(screen
->get_param(screen
, PIPE_CAP_MAX_RENDER_TARGETS
),
142 1, MAX_DRAW_BUFFERS
);
144 /* Quads always follow GL provoking rules. */
145 c
->QuadsFollowProvokingVertexConvention
= GL_FALSE
;
147 for (sh
= 0; sh
< MESA_SHADER_TYPES
; ++sh
) {
148 struct gl_shader_compiler_options
*options
=
149 &st
->ctx
->ShaderCompilerOptions
[sh
];
150 struct gl_program_constants
*pc
;
153 case PIPE_SHADER_FRAGMENT
:
154 pc
= &c
->FragmentProgram
;
156 case PIPE_SHADER_VERTEX
:
157 pc
= &c
->VertexProgram
;
159 case PIPE_SHADER_GEOMETRY
:
160 pc
= &c
->GeometryProgram
;
167 pc
->MaxNativeInstructions
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
168 pc
->MaxNativeAluInstructions
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS
);
169 pc
->MaxNativeTexInstructions
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS
);
170 pc
->MaxNativeTexIndirections
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS
);
171 pc
->MaxNativeAttribs
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INPUTS
);
172 pc
->MaxNativeTemps
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_TEMPS
);
173 pc
->MaxNativeAddressRegs
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_ADDRS
);
174 pc
->MaxNativeParameters
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONSTS
);
175 pc
->MaxUniformComponents
= 4 * MIN2(pc
->MaxNativeParameters
, MAX_UNIFORMS
);
176 /* raise MaxParameters if native support is higher */
177 pc
->MaxParameters
= MAX2(pc
->MaxParameters
, pc
->MaxNativeParameters
);
179 /* Gallium doesn't really care about local vs. env parameters so use the
182 pc
->MaxLocalParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_LOCAL_PARAMS
);
183 pc
->MaxEnvParams
= MIN2(pc
->MaxParameters
, MAX_PROGRAM_ENV_PARAMS
);
185 options
->EmitNoNoise
= TRUE
;
187 /* TODO: make these more fine-grained if anyone needs it */
188 options
->MaxIfDepth
= screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
189 options
->EmitNoLoops
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH
);
190 options
->EmitNoFunctions
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
191 options
->EmitNoMainReturn
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_SUBROUTINES
);
193 options
->EmitNoCont
= !screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED
);
195 options
->EmitNoIndirectInput
= !screen
->get_shader_param(screen
, sh
,
196 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR
);
197 options
->EmitNoIndirectOutput
= !screen
->get_shader_param(screen
, sh
,
198 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR
);
199 options
->EmitNoIndirectTemp
= !screen
->get_shader_param(screen
, sh
,
200 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR
);
201 options
->EmitNoIndirectUniform
= !screen
->get_shader_param(screen
, sh
,
202 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR
);
204 if (options
->EmitNoLoops
)
205 options
->MaxUnrollIterations
= MIN2(screen
->get_shader_param(screen
, sh
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
), 65536);
208 /* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs
209 * and is set in MaxNativeAttribs. It's always 2 colors + N generic
210 * attributes. The GLSL compiler never uses COLORn for varyings, so we
211 * subtract the 2 colors to get the maximum number of varyings (generic
212 * attributes) supported by a driver. */
213 c
->MaxVarying
= screen
->get_shader_param(screen
, PIPE_SHADER_FRAGMENT
, PIPE_SHADER_CAP_MAX_INPUTS
) - 2;
214 c
->MaxVarying
= MIN2(c
->MaxVarying
, MAX_VARYING
);
216 /* XXX we'll need a better query here someday */
217 if (screen
->get_param(screen
, PIPE_CAP_GLSL
)) {
218 c
->MinProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MIN_TEXEL_OFFSET
);
219 c
->MaxProgramTexelOffset
= screen
->get_param(screen
, PIPE_CAP_MAX_TEXEL_OFFSET
);
221 c
->GLSLVersion
= 120;
222 _mesa_override_glsl_version(st
->ctx
);
223 c
->UniformBooleanTrue
= ~0;
226 c
->StripTextureBorder
= GL_TRUE
;
230 static GLboolean
st_get_s3tc_override(void)
232 const char *override
= _mesa_getenv("force_s3tc_enable");
233 if (override
&& !strcmp(override
, "true"))
240 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
241 * which GL extensions are supported.
242 * Quite a few extensions are always supported because they are standard
243 * features or can be built on top of other gallium features.
244 * Some fine tuning may still be needed.
246 void st_init_extensions(struct st_context
*st
)
248 struct pipe_screen
*screen
= st
->pipe
->screen
;
249 struct gl_context
*ctx
= st
->ctx
;
253 * Extensions that are supported by all Gallium drivers:
255 ctx
->Extensions
.ARB_copy_buffer
= GL_TRUE
;
256 ctx
->Extensions
.ARB_draw_elements_base_vertex
= GL_TRUE
;
257 ctx
->Extensions
.ARB_fragment_coord_conventions
= GL_TRUE
;
258 ctx
->Extensions
.ARB_fragment_program
= GL_TRUE
;
259 ctx
->Extensions
.ARB_half_float_pixel
= GL_TRUE
;
260 ctx
->Extensions
.ARB_map_buffer_range
= GL_TRUE
;
261 ctx
->Extensions
.ARB_sampler_objects
= GL_TRUE
;
262 ctx
->Extensions
.ARB_texture_border_clamp
= GL_TRUE
; /* XXX temp */
263 ctx
->Extensions
.ARB_texture_cube_map
= GL_TRUE
;
264 ctx
->Extensions
.ARB_texture_env_combine
= GL_TRUE
;
265 ctx
->Extensions
.ARB_texture_env_crossbar
= GL_TRUE
;
266 ctx
->Extensions
.ARB_texture_env_dot3
= GL_TRUE
;
267 ctx
->Extensions
.ARB_texture_storage
= GL_TRUE
;
268 ctx
->Extensions
.ARB_vertex_array_object
= GL_TRUE
;
269 ctx
->Extensions
.ARB_vertex_program
= GL_TRUE
;
270 ctx
->Extensions
.ARB_window_pos
= GL_TRUE
;
272 ctx
->Extensions
.EXT_blend_color
= GL_TRUE
;
273 ctx
->Extensions
.EXT_blend_func_separate
= GL_TRUE
;
274 ctx
->Extensions
.EXT_blend_minmax
= GL_TRUE
;
275 ctx
->Extensions
.EXT_framebuffer_blit
= GL_TRUE
;
276 ctx
->Extensions
.EXT_framebuffer_object
= GL_TRUE
;
277 ctx
->Extensions
.EXT_framebuffer_multisample
= GL_TRUE
;
278 ctx
->Extensions
.EXT_fog_coord
= GL_TRUE
;
279 ctx
->Extensions
.EXT_gpu_program_parameters
= GL_TRUE
;
280 ctx
->Extensions
.EXT_pixel_buffer_object
= GL_TRUE
;
281 ctx
->Extensions
.EXT_point_parameters
= GL_TRUE
;
282 ctx
->Extensions
.EXT_provoking_vertex
= GL_TRUE
;
283 ctx
->Extensions
.EXT_secondary_color
= GL_TRUE
;
284 ctx
->Extensions
.EXT_texture_env_dot3
= GL_TRUE
;
285 ctx
->Extensions
.EXT_vertex_array_bgra
= GL_TRUE
;
287 ctx
->Extensions
.APPLE_vertex_array_object
= GL_TRUE
;
289 ctx
->Extensions
.ATI_texture_env_combine3
= GL_TRUE
;
291 ctx
->Extensions
.MESA_pack_invert
= GL_TRUE
;
293 ctx
->Extensions
.NV_blend_square
= GL_TRUE
;
294 ctx
->Extensions
.NV_fog_distance
= GL_TRUE
;
295 ctx
->Extensions
.NV_texgen_reflection
= GL_TRUE
;
296 ctx
->Extensions
.NV_texture_env_combine4
= GL_TRUE
;
297 ctx
->Extensions
.NV_texture_rectangle
= GL_TRUE
;
299 /* possibly could support the following two */
300 ctx
->Extensions
.NV_vertex_program
= GL_TRUE
;
301 ctx
->Extensions
.NV_vertex_program1_1
= GL_TRUE
;
304 #if FEATURE_OES_EGL_image
305 ctx
->Extensions
.OES_EGL_image
= GL_TRUE
;
307 #if FEATURE_OES_draw_texture
308 ctx
->Extensions
.OES_draw_texture
= GL_TRUE
;
312 * Extensions that depend on the driver/hardware:
314 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_SWIZZLE
) > 0) {
315 ctx
->Extensions
.EXT_texture_swizzle
= GL_TRUE
;
318 if (screen
->get_param(screen
, PIPE_CAP_GLSL
)) {
319 ctx
->Extensions
.ARB_fragment_shader
= GL_TRUE
;
320 ctx
->Extensions
.ARB_vertex_shader
= GL_TRUE
;
321 ctx
->Extensions
.ARB_shader_objects
= GL_TRUE
;
322 ctx
->Extensions
.ARB_shading_language_100
= GL_TRUE
;
323 ctx
->Extensions
.ARB_explicit_attrib_location
= GL_TRUE
;
324 ctx
->Extensions
.EXT_separate_shader_objects
= GL_TRUE
;
327 if (screen
->get_param(screen
, PIPE_CAP_BLEND_EQUATION_SEPARATE
)) {
328 ctx
->Extensions
.EXT_blend_equation_separate
= GL_TRUE
;
331 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_MIRROR_CLAMP
) > 0) {
332 ctx
->Extensions
.EXT_texture_mirror_clamp
= GL_TRUE
;
333 ctx
->Extensions
.ATI_texture_mirror_once
= GL_TRUE
;
336 if (screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
337 ctx
->Extensions
.ARB_texture_non_power_of_two
= GL_TRUE
;
340 if (screen
->get_param(screen
, PIPE_CAP_TWO_SIDED_STENCIL
)) {
341 ctx
->Extensions
.ATI_separate_stencil
= GL_TRUE
;
342 ctx
->Extensions
.EXT_stencil_two_side
= GL_TRUE
;
345 if (screen
->get_param(screen
, PIPE_CAP_ANISOTROPIC_FILTER
)) {
346 ctx
->Extensions
.EXT_texture_filter_anisotropic
= GL_TRUE
;
349 if (screen
->get_param(screen
, PIPE_CAP_POINT_SPRITE
)) {
350 ctx
->Extensions
.ARB_point_sprite
= GL_TRUE
;
351 /* GL_NV_point_sprite is not supported by gallium because we don't
352 * support the GL_POINT_SPRITE_R_MODE_NV option.
356 if (screen
->get_param(screen
, PIPE_CAP_OCCLUSION_QUERY
)) {
357 ctx
->Extensions
.ARB_occlusion_query
= GL_TRUE
;
358 ctx
->Extensions
.ARB_occlusion_query2
= GL_TRUE
;
360 if (screen
->get_param(screen
, PIPE_CAP_TIMER_QUERY
)) {
361 ctx
->Extensions
.EXT_timer_query
= GL_TRUE
;
364 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_SHADOW_MAP
)) {
365 ctx
->Extensions
.ARB_depth_texture
= GL_TRUE
;
366 ctx
->Extensions
.ARB_fragment_program_shadow
= GL_TRUE
;
367 ctx
->Extensions
.ARB_shadow
= GL_TRUE
;
368 ctx
->Extensions
.EXT_shadow_funcs
= GL_TRUE
;
369 /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
372 /* GL_EXT_packed_depth_stencil requires both the ability to render to
373 * a depth/stencil buffer and texture from depth/stencil source.
375 if (screen
->is_format_supported(screen
, PIPE_FORMAT_S8_UINT_Z24_UNORM
,
377 PIPE_BIND_DEPTH_STENCIL
) &&
378 screen
->is_format_supported(screen
, PIPE_FORMAT_S8_UINT_Z24_UNORM
,
380 PIPE_BIND_SAMPLER_VIEW
)) {
381 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
383 else if (screen
->is_format_supported(screen
, PIPE_FORMAT_Z24_UNORM_S8_UINT
,
385 PIPE_BIND_DEPTH_STENCIL
) &&
386 screen
->is_format_supported(screen
, PIPE_FORMAT_Z24_UNORM_S8_UINT
,
388 PIPE_BIND_SAMPLER_VIEW
)) {
389 ctx
->Extensions
.EXT_packed_depth_stencil
= GL_TRUE
;
392 /* float support - assume nothing exclusively supports 64-bit floats */
393 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R32G32B32A32_FLOAT
,
395 PIPE_BIND_SAMPLER_VIEW
|
396 PIPE_BIND_RENDER_TARGET
) &&
397 screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_FLOAT
,
399 PIPE_BIND_SAMPLER_VIEW
|
400 PIPE_BIND_RENDER_TARGET
)) {
401 ctx
->Extensions
.ARB_texture_float
= GL_TRUE
;
405 if (screen
->is_format_supported(screen
, PIPE_FORMAT_A8B8G8R8_SRGB
,
407 PIPE_BIND_SAMPLER_VIEW
) ||
408 screen
->is_format_supported(screen
, PIPE_FORMAT_B8G8R8A8_SRGB
,
410 PIPE_BIND_SAMPLER_VIEW
)) {
411 ctx
->Extensions
.EXT_texture_sRGB
= GL_TRUE
;
412 ctx
->Extensions
.EXT_texture_sRGB_decode
= GL_TRUE
;
413 if (screen
->is_format_supported(screen
, PIPE_FORMAT_A8B8G8R8_SRGB
,
415 PIPE_BIND_RENDER_TARGET
) ||
416 screen
->is_format_supported(screen
, PIPE_FORMAT_B8G8R8A8_SRGB
,
418 PIPE_BIND_RENDER_TARGET
)) {
419 ctx
->Extensions
.EXT_framebuffer_sRGB
= GL_TRUE
;
420 ctx
->Const
.sRGBCapable
= GL_TRUE
;
424 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8_UNORM
,
426 PIPE_BIND_SAMPLER_VIEW
)) {
427 ctx
->Extensions
.ARB_texture_rg
= GL_TRUE
;
431 if (screen
->is_format_supported(screen
, PIPE_FORMAT_DXT5_RGBA
,
433 PIPE_BIND_SAMPLER_VIEW
) &&
434 (ctx
->Mesa_DXTn
|| st_get_s3tc_override())) {
435 ctx
->Extensions
.EXT_texture_compression_s3tc
= GL_TRUE
;
436 ctx
->Extensions
.S3_s3tc
= GL_TRUE
;
439 if (screen
->is_format_supported(screen
, PIPE_FORMAT_RGTC1_UNORM
,
441 PIPE_BIND_SAMPLER_VIEW
) &&
442 screen
->is_format_supported(screen
, PIPE_FORMAT_RGTC1_SNORM
,
444 PIPE_BIND_SAMPLER_VIEW
) &&
445 screen
->is_format_supported(screen
, PIPE_FORMAT_RGTC2_UNORM
,
447 PIPE_BIND_SAMPLER_VIEW
) &&
448 screen
->is_format_supported(screen
, PIPE_FORMAT_RGTC2_SNORM
,
450 PIPE_BIND_SAMPLER_VIEW
)
452 ctx
->Extensions
.ARB_texture_compression_rgtc
= GL_TRUE
;
455 if (screen
->is_format_supported(screen
, PIPE_FORMAT_LATC1_UNORM
,
457 PIPE_BIND_SAMPLER_VIEW
) &&
458 screen
->is_format_supported(screen
, PIPE_FORMAT_LATC1_SNORM
,
460 PIPE_BIND_SAMPLER_VIEW
) &&
461 screen
->is_format_supported(screen
, PIPE_FORMAT_LATC2_UNORM
,
463 PIPE_BIND_SAMPLER_VIEW
) &&
464 screen
->is_format_supported(screen
, PIPE_FORMAT_LATC2_SNORM
,
466 PIPE_BIND_SAMPLER_VIEW
)) {
467 ctx
->Extensions
.EXT_texture_compression_latc
= GL_TRUE
;
470 if (screen
->is_format_supported(screen
, PIPE_FORMAT_LATC2_UNORM
,
472 PIPE_BIND_SAMPLER_VIEW
)) {
473 ctx
->Extensions
.ATI_texture_compression_3dc
= GL_TRUE
;
476 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8B8A8_SNORM
,
478 PIPE_BIND_SAMPLER_VIEW
)) {
479 ctx
->Extensions
.EXT_texture_snorm
= GL_TRUE
;
483 if (screen
->is_format_supported(screen
, PIPE_FORMAT_UYVY
,
485 PIPE_BIND_SAMPLER_VIEW
) ||
486 screen
->is_format_supported(screen
, PIPE_FORMAT_YUYV
,
488 PIPE_BIND_SAMPLER_VIEW
)) {
489 ctx
->Extensions
.MESA_ycbcr_texture
= GL_TRUE
;
492 /* GL_EXT_texture_array */
493 if (screen
->get_param(screen
, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS
) > 1) {
494 ctx
->Extensions
.EXT_texture_array
= GL_TRUE
;
495 ctx
->Extensions
.MESA_texture_array
= GL_TRUE
;
498 /* GL_ARB_framebuffer_object */
499 if (ctx
->Extensions
.EXT_packed_depth_stencil
) {
500 /* we support always support GL_EXT_framebuffer_blit */
501 ctx
->Extensions
.ARB_framebuffer_object
= GL_TRUE
;
504 if (screen
->get_param(screen
, PIPE_CAP_CONDITIONAL_RENDER
)) {
505 ctx
->Extensions
.NV_conditional_render
= GL_TRUE
;
508 if (screen
->get_param(screen
, PIPE_CAP_INDEP_BLEND_ENABLE
)) {
509 ctx
->Extensions
.EXT_draw_buffers2
= GL_TRUE
;
512 if (screen
->get_param(screen
, PIPE_CAP_INDEP_BLEND_FUNC
)) {
513 ctx
->Extensions
.ARB_draw_buffers_blend
= GL_TRUE
;
516 /* GL_ARB_half_float_vertex */
517 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_FLOAT
,
519 PIPE_BIND_VERTEX_BUFFER
)) {
520 ctx
->Extensions
.ARB_half_float_vertex
= GL_TRUE
;
523 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R32G32B32A32_FIXED
,
525 PIPE_BIND_VERTEX_BUFFER
)) {
526 ctx
->Extensions
.ARB_ES2_compatibility
= GL_TRUE
;
529 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R10G10B10A2_UNORM
,
531 PIPE_BIND_VERTEX_BUFFER
) &&
532 screen
->is_format_supported(screen
, PIPE_FORMAT_B10G10R10A2_UNORM
,
534 PIPE_BIND_VERTEX_BUFFER
) &&
535 screen
->is_format_supported(screen
, PIPE_FORMAT_R10G10B10A2_SNORM
,
537 PIPE_BIND_VERTEX_BUFFER
) &&
538 screen
->is_format_supported(screen
, PIPE_FORMAT_B10G10R10A2_SNORM
,
540 PIPE_BIND_VERTEX_BUFFER
) &&
541 screen
->is_format_supported(screen
, PIPE_FORMAT_R10G10B10A2_USCALED
,
543 PIPE_BIND_VERTEX_BUFFER
) &&
544 screen
->is_format_supported(screen
, PIPE_FORMAT_B10G10R10A2_USCALED
,
546 PIPE_BIND_VERTEX_BUFFER
) &&
547 screen
->is_format_supported(screen
, PIPE_FORMAT_R10G10B10A2_SSCALED
,
549 PIPE_BIND_VERTEX_BUFFER
) &&
550 screen
->is_format_supported(screen
, PIPE_FORMAT_B10G10R10A2_SSCALED
,
552 PIPE_BIND_VERTEX_BUFFER
)) {
553 ctx
->Extensions
.ARB_vertex_type_2_10_10_10_rev
= GL_TRUE
;
556 if (screen
->get_shader_param(screen
, PIPE_SHADER_GEOMETRY
, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
) > 0) {
557 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
558 ctx
->Extensions
.ARB_geometry_shader4
= GL_TRUE
;
562 ctx
->Extensions
.NV_primitive_restart
= GL_TRUE
;
563 if (!screen
->get_param(screen
, PIPE_CAP_PRIMITIVE_RESTART
)) {
564 st
->sw_primitive_restart
= GL_TRUE
;
567 if (screen
->get_param(screen
, PIPE_CAP_DEPTH_CLAMP
)) {
568 ctx
->Extensions
.ARB_depth_clamp
= GL_TRUE
;
571 /* This extension does not actually require support of floating point
572 * render targets, just clamping controls.
573 * Advertise this extension if either fragment color clamping is supported
574 * or no render targets having color values outside of the range [0, 1]
575 * are supported, in which case the fragment color clamping has no effect
578 if (screen
->get_param(screen
, PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL
) ||
579 (!screen
->is_format_supported(screen
, PIPE_FORMAT_R8G8B8A8_SNORM
,
581 PIPE_BIND_RENDER_TARGET
) &&
582 !screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
,
584 PIPE_BIND_RENDER_TARGET
) &&
585 !screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_FLOAT
,
587 PIPE_BIND_RENDER_TARGET
) &&
588 !screen
->is_format_supported(screen
, PIPE_FORMAT_R32G32B32A32_FLOAT
,
590 PIPE_BIND_RENDER_TARGET
) &&
591 !screen
->is_format_supported(screen
, PIPE_FORMAT_R11G11B10_FLOAT
,
593 PIPE_BIND_RENDER_TARGET
) &&
594 !screen
->is_format_supported(screen
, PIPE_FORMAT_R9G9B9E5_FLOAT
,
596 PIPE_BIND_RENDER_TARGET
))) {
597 ctx
->Extensions
.ARB_color_buffer_float
= GL_TRUE
;
600 if (screen
->get_param(screen
, PIPE_CAP_SHADER_STENCIL_EXPORT
)) {
601 ctx
->Extensions
.ARB_shader_stencil_export
= GL_TRUE
;
604 if (screen
->get_param(screen
, PIPE_CAP_TGSI_INSTANCEID
)) {
605 ctx
->Extensions
.ARB_draw_instanced
= GL_TRUE
;
607 if (screen
->get_param(screen
, PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR
)) {
608 ctx
->Extensions
.ARB_instanced_arrays
= GL_TRUE
;
611 if (screen
->fence_finish
) {
612 ctx
->Extensions
.ARB_sync
= GL_TRUE
;
615 if (screen
->get_param(screen
, PIPE_CAP_TEXTURE_BARRIER
)) {
616 ctx
->Extensions
.NV_texture_barrier
= GL_TRUE
;
619 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R9G9B9E5_FLOAT
,
621 PIPE_BIND_SAMPLER_VIEW
)) {
622 ctx
->Extensions
.EXT_texture_shared_exponent
= GL_TRUE
;
625 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R11G11B10_FLOAT
,
627 PIPE_BIND_RENDER_TARGET
|
628 PIPE_BIND_SAMPLER_VIEW
)) {
629 ctx
->Extensions
.EXT_packed_float
= GL_TRUE
;
632 /* Maximum sample count. */
633 for (i
= 16; i
> 0; --i
) {
634 if (screen
->is_format_supported(screen
, PIPE_FORMAT_B8G8R8A8_UNORM
,
636 PIPE_BIND_RENDER_TARGET
)) {
637 ctx
->Const
.MaxSamples
= i
;
642 if (screen
->get_param(screen
, PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE
)) {
643 ctx
->Extensions
.ARB_seamless_cube_map
= GL_TRUE
;
644 ctx
->Extensions
.AMD_seamless_cubemap_per_texture
= GL_TRUE
;
646 else if (screen
->get_param(screen
, PIPE_CAP_SEAMLESS_CUBE_MAP
)) {
647 ctx
->Extensions
.ARB_seamless_cube_map
= GL_TRUE
;
650 if (screen
->get_param(screen
, PIPE_CAP_SM3
)) {
651 ctx
->Extensions
.ARB_shader_texture_lod
= GL_TRUE
;
654 if (screen
->is_format_supported(screen
, PIPE_FORMAT_Z32_FLOAT
,
656 PIPE_BIND_DEPTH_STENCIL
|
657 PIPE_BIND_SAMPLER_VIEW
) &&
658 screen
->is_format_supported(screen
, PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
,
660 PIPE_BIND_DEPTH_STENCIL
|
661 PIPE_BIND_SAMPLER_VIEW
)) {
662 ctx
->Extensions
.ARB_depth_buffer_float
= GL_TRUE
;