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"
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"
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;
74 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
78 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
79 MAX_3D_TEXTURE_LEVELS);
81 c->MaxCubeTextureLevels
82 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
83 MAX_CUBE_TEXTURE_LEVELS);
86 = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
88 c->MaxTextureImageUnits
89 = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
90 MAX_TEXTURE_IMAGE_UNITS);
92 c->MaxVertexTextureImageUnits
93 = _min(screen->get_param(screen, PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS),
94 MAX_VERTEX_TEXTURE_IMAGE_UNITS);
96 c->MaxCombinedTextureImageUnits
97 = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS),
98 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
100 c->MaxTextureCoordUnits
101 = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
103 c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits);
106 = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
107 1, MAX_DRAW_BUFFERS);
110 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
112 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
115 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
117 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
118 /* called after _mesa_create_context/_mesa_init_point, fix default user
119 * settable max point size up
121 st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA);
122 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
123 * for non-aa sizes, but we can go down to 0.0 for aa points.
125 c->MinPointSize = 1.0f;
126 c->MinPointSizeAA = 0.0f;
128 c->MaxTextureMaxAnisotropy
129 = _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));
132 = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);
135 = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
136 1, MAX_DRAW_BUFFERS);
138 /* Quads always follow GL provoking rules. */
139 c->QuadsFollowProvokingVertexConvention = GL_FALSE;
141 for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) {
142 struct gl_shader_compiler_options *options =
143 &st->ctx->ShaderCompilerOptions[sh];
144 struct gl_program_constants *pc;
147 case PIPE_SHADER_FRAGMENT:
148 pc = &c->FragmentProgram;
150 case PIPE_SHADER_VERTEX:
151 pc = &c->VertexProgram;
153 case PIPE_SHADER_GEOMETRY:
154 pc = &c->GeometryProgram;
161 pc->MaxNativeInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
162 pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
163 pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
164 pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
165 pc->MaxNativeAttribs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
166 pc->MaxNativeTemps = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
167 pc->MaxNativeAddressRegs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS);
168 pc->MaxNativeParameters = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS);
169 pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
170 /* raise MaxParameters if native support is higher */
171 pc->MaxParameters = MAX2(pc->MaxParameters, pc->MaxNativeParameters);
173 options->EmitNoNoise = TRUE;
175 /* TODO: make these more fine-grained if anyone needs it */
176 options->EmitNoIfs = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
177 options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
178 options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
179 options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
181 options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
183 options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
184 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
185 options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
186 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
187 options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
188 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
189 options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
190 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
192 if (options->EmitNoLoops)
193 options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
196 /* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs
197 * and is set in MaxNativeAttribs. It's always 2 colors + N generic
198 * attributes. The GLSL compiler never uses COLORn for varyings, so we
199 * subtract the 2 colors to get the maximum number of varyings (generic
200 * attributes) supported by a driver. */
201 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS) - 2;
202 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
204 /* XXX we'll need a better query here someday */
205 if (screen->get_param(screen, PIPE_CAP_GLSL)) {
206 c->GLSLVersion = 120;
211 static GLboolean st_get_s3tc_override(void)
213 const char *override = _mesa_getenv("force_s3tc_enable");
214 if (override && !strcmp(override, "true"))
221 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
222 * which GL extensions are supported.
223 * Quite a few extensions are always supported because they are standard
224 * features or can be built on top of other gallium features.
225 * Some fine tuning may still be needed.
227 void st_init_extensions(struct st_context *st)
229 struct pipe_screen *screen = st->pipe->screen;
230 struct gl_context *ctx = st->ctx;
233 * Extensions that are supported by all Gallium drivers:
235 ctx->Extensions.ARB_copy_buffer = GL_TRUE;
236 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
237 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
238 ctx->Extensions.ARB_fragment_program = GL_TRUE;
239 ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
240 ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
241 ctx->Extensions.ARB_multisample = GL_TRUE;
242 ctx->Extensions.ARB_sampler_objects = GL_TRUE;
243 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
244 ctx->Extensions.ARB_texture_compression = GL_TRUE;
245 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
246 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
247 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
248 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
249 ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
250 ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;
251 ctx->Extensions.ARB_vertex_program = GL_TRUE;
252 ctx->Extensions.ARB_window_pos = GL_TRUE;
254 ctx->Extensions.EXT_blend_color = GL_TRUE;
255 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
256 ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
257 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
258 ctx->Extensions.EXT_blend_subtract = GL_TRUE;
259 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
260 ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
261 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
262 ctx->Extensions.EXT_fog_coord = GL_TRUE;
263 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
264 ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;
265 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
266 ctx->Extensions.EXT_point_parameters = GL_TRUE;
267 ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
268 ctx->Extensions.EXT_secondary_color = GL_TRUE;
269 ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
270 ctx->Extensions.EXT_texture_env_add = GL_TRUE;
271 ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
272 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
273 ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
274 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
275 if (ctx->API == API_OPENGLES || ctx->API == API_OPENGLES2)
276 ctx->Extensions.EXT_texture_format_BGRA8888 = GL_TRUE;
278 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
280 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
282 ctx->Extensions.MESA_pack_invert = GL_TRUE;
284 ctx->Extensions.NV_blend_square = GL_TRUE;
285 ctx->Extensions.NV_texgen_reflection = GL_TRUE;
286 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
287 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
289 /* possibly could support the following two */
290 ctx->Extensions.NV_vertex_program = GL_TRUE;
291 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
294 #if FEATURE_OES_EGL_image
295 ctx->Extensions.OES_EGL_image = GL_TRUE;
297 #if FEATURE_OES_draw_texture
298 ctx->Extensions.OES_draw_texture = GL_TRUE;
301 ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
304 * Extensions that depend on the driver/hardware:
306 if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
307 ctx->Extensions.ARB_draw_buffers = GL_TRUE;
310 if (screen->get_param(screen, PIPE_CAP_TEXTURE_SWIZZLE) > 0) {
311 ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
314 if (screen->get_param(screen, PIPE_CAP_GLSL)) {
315 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
316 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
317 ctx->Extensions.ARB_shader_objects = GL_TRUE;
318 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
319 ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
320 ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
323 if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_REPEAT) > 0) {
324 ctx->Extensions.ARB_texture_mirrored_repeat = 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_MAX_TEXTURE_IMAGE_UNITS) > 1) {
341 ctx->Extensions.ARB_multitexture = GL_TRUE;
344 if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
345 ctx->Extensions.ATI_separate_stencil = GL_TRUE;
346 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
349 if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
350 ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
353 if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
354 ctx->Extensions.ARB_point_sprite = GL_TRUE;
355 /* GL_NV_point_sprite is not supported by gallium because we don't
356 * support the GL_POINT_SPRITE_R_MODE_NV option.
360 if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
361 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
362 ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
364 if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY)) {
365 ctx->Extensions.EXT_timer_query = GL_TRUE;
368 if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
369 ctx->Extensions.ARB_depth_texture = GL_TRUE;
370 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
371 ctx->Extensions.ARB_shadow = GL_TRUE;
372 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
373 /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
376 /* GL_EXT_packed_depth_stencil requires both the ability to render to
377 * a depth/stencil buffer and texture from depth/stencil source.
379 if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
381 PIPE_BIND_DEPTH_STENCIL) &&
382 screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
384 PIPE_BIND_SAMPLER_VIEW)) {
385 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
387 else if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
389 PIPE_BIND_DEPTH_STENCIL) &&
390 screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
392 PIPE_BIND_SAMPLER_VIEW)) {
393 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
396 /* float support - assume nothing exclusively supports 64-bit floats */
397 if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
399 PIPE_BIND_SAMPLER_VIEW |
400 PIPE_BIND_RENDER_TARGET) &&
401 screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
403 PIPE_BIND_SAMPLER_VIEW |
404 PIPE_BIND_RENDER_TARGET)) {
405 ctx->Extensions.ARB_texture_float = GL_TRUE;
409 if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
411 PIPE_BIND_SAMPLER_VIEW) ||
412 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
414 PIPE_BIND_SAMPLER_VIEW)) {
415 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
416 ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE;
417 if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
419 PIPE_BIND_RENDER_TARGET) ||
420 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
422 PIPE_BIND_RENDER_TARGET)) {
423 ctx->Extensions.EXT_framebuffer_sRGB = GL_TRUE;
424 ctx->Const.sRGBCapable = GL_TRUE;
428 if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
430 PIPE_BIND_SAMPLER_VIEW)) {
431 ctx->Extensions.ARB_texture_rg = GL_TRUE;
435 if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
437 PIPE_BIND_SAMPLER_VIEW) &&
438 (ctx->Mesa_DXTn || st_get_s3tc_override())) {
439 ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
440 ctx->Extensions.S3_s3tc = GL_TRUE;
443 if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM,
445 PIPE_BIND_SAMPLER_VIEW) &&
446 screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM,
448 PIPE_BIND_SAMPLER_VIEW) &&
449 screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM,
451 PIPE_BIND_SAMPLER_VIEW) &&
452 screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM,
454 PIPE_BIND_SAMPLER_VIEW)
456 ctx->Extensions.ARB_texture_compression_rgtc = GL_TRUE;
459 if (screen->is_format_supported(screen, PIPE_FORMAT_LATC1_UNORM,
461 PIPE_BIND_SAMPLER_VIEW) &&
462 screen->is_format_supported(screen, PIPE_FORMAT_LATC1_SNORM,
464 PIPE_BIND_SAMPLER_VIEW) &&
465 screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
467 PIPE_BIND_SAMPLER_VIEW) &&
468 screen->is_format_supported(screen, PIPE_FORMAT_LATC2_SNORM,
470 PIPE_BIND_SAMPLER_VIEW)) {
471 ctx->Extensions.EXT_texture_compression_latc = GL_TRUE;
474 if (screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
476 PIPE_BIND_SAMPLER_VIEW)) {
477 ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE;
480 if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
482 PIPE_BIND_SAMPLER_VIEW)) {
483 ctx->Extensions.EXT_texture_snorm = GL_TRUE;
487 if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY,
489 PIPE_BIND_SAMPLER_VIEW) ||
490 screen->is_format_supported(screen, PIPE_FORMAT_YUYV,
492 PIPE_BIND_SAMPLER_VIEW)) {
493 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
496 /* GL_EXT_texture_array */
497 if (screen->get_param(screen, PIPE_CAP_ARRAY_TEXTURES)) {
498 ctx->Extensions.EXT_texture_array = GL_TRUE;
499 ctx->Extensions.MESA_texture_array = GL_TRUE;
502 /* GL_ARB_framebuffer_object */
503 if (ctx->Extensions.EXT_packed_depth_stencil) {
504 /* we support always support GL_EXT_framebuffer_blit */
505 ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
508 if (st->pipe->render_condition) {
509 ctx->Extensions.NV_conditional_render = GL_TRUE;
512 if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_ENABLE)) {
513 ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
516 if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) {
517 ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE;
520 /* GL_ARB_half_float_vertex */
521 if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
523 PIPE_BIND_VERTEX_BUFFER)) {
524 ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
527 if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FIXED,
529 PIPE_BIND_VERTEX_BUFFER)) {
530 ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
533 if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
534 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
535 ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
539 if (screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
540 ctx->Extensions.NV_primitive_restart = GL_TRUE;
543 if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) {
544 ctx->Extensions.ARB_depth_clamp = GL_TRUE;
547 /* This extension does not actually require support of floating point
548 * render targets, just clamping controls.
549 * Advertise this extension if either fragment color clamping is supported
550 * or no render targets having color values outside of the range [0, 1]
551 * are supported, in which case the fragment color clamping has no effect
554 if (screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL) ||
555 (!screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
557 PIPE_BIND_RENDER_TARGET) &&
558 !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SNORM,
560 PIPE_BIND_RENDER_TARGET) &&
561 !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
563 PIPE_BIND_RENDER_TARGET) &&
564 !screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
566 PIPE_BIND_RENDER_TARGET) &&
567 !screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
569 PIPE_BIND_RENDER_TARGET) &&
570 !screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
572 PIPE_BIND_RENDER_TARGET))) {
573 ctx->Extensions.ARB_color_buffer_float = GL_TRUE;
576 if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
577 ctx->Extensions.ARB_shader_stencil_export = GL_TRUE;
580 if (screen->get_param(screen, PIPE_CAP_TGSI_INSTANCEID)) {
581 ctx->Extensions.ARB_draw_instanced = GL_TRUE;
583 if (screen->get_param(screen, PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR)) {
584 ctx->Extensions.ARB_instanced_arrays = GL_TRUE;
587 if (screen->fence_finish) {
588 ctx->Extensions.ARB_sync = GL_TRUE;
591 if (st->pipe->texture_barrier) {
592 ctx->Extensions.NV_texture_barrier = GL_TRUE;
595 if (screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
597 PIPE_BIND_SAMPLER_VIEW)) {
598 ctx->Extensions.EXT_texture_shared_exponent = GL_TRUE;
601 if (screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
603 PIPE_BIND_RENDER_TARGET |
604 PIPE_BIND_SAMPLER_VIEW)) {
605 ctx->Extensions.EXT_packed_float = GL_TRUE;
608 if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE)) {
609 ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
610 ctx->Extensions.AMD_seamless_cubemap_per_texture = GL_TRUE;
612 else if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP)) {
613 ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
616 if (screen->get_param(screen, PIPE_CAP_SM3)) {
617 ctx->Extensions.ARB_shader_texture_lod = GL_TRUE;