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_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
94 MAX_TEXTURE_IMAGE_UNITS);
96 c->MaxVertexTextureImageUnits
97 = _min(screen->get_param(screen, PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS),
98 MAX_VERTEX_TEXTURE_IMAGE_UNITS);
100 c->MaxCombinedTextureImageUnits
101 = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS),
102 MAX_COMBINED_TEXTURE_IMAGE_UNITS);
104 c->MaxTextureCoordUnits
105 = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
107 c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits);
110 = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
111 1, MAX_DRAW_BUFFERS);
114 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
116 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
119 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
121 = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
122 /* called after _mesa_create_context/_mesa_init_point, fix default user
123 * settable max point size up
125 st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA);
126 /* these are not queryable. Note that GL basically mandates a 1.0 minimum
127 * for non-aa sizes, but we can go down to 0.0 for aa points.
129 c->MinPointSize = 1.0f;
130 c->MinPointSizeAA = 0.0f;
132 c->MaxTextureMaxAnisotropy
133 = _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));
136 = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);
139 = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
140 1, MAX_DRAW_BUFFERS);
142 /* Quads always follow GL provoking rules. */
143 c->QuadsFollowProvokingVertexConvention = GL_FALSE;
145 for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) {
146 struct gl_shader_compiler_options *options =
147 &st->ctx->ShaderCompilerOptions[sh];
148 struct gl_program_constants *pc;
151 case PIPE_SHADER_FRAGMENT:
152 pc = &c->FragmentProgram;
154 case PIPE_SHADER_VERTEX:
155 pc = &c->VertexProgram;
157 case PIPE_SHADER_GEOMETRY:
158 pc = &c->GeometryProgram;
165 pc->MaxNativeInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
166 pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
167 pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
168 pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
169 pc->MaxNativeAttribs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
170 pc->MaxNativeTemps = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
171 pc->MaxNativeAddressRegs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS);
172 pc->MaxNativeParameters = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS);
173 pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
174 /* raise MaxParameters if native support is higher */
175 pc->MaxParameters = MAX2(pc->MaxParameters, pc->MaxNativeParameters);
177 /* Gallium doesn't really care about local vs. env parameters so use the
180 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS);
181 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS);
183 options->EmitNoNoise = TRUE;
185 /* TODO: make these more fine-grained if anyone needs it */
186 options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
187 options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
188 options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
189 options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
191 options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
193 options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
194 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
195 options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
196 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
197 options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
198 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
199 options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
200 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
202 if (options->EmitNoLoops)
203 options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
206 /* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs
207 * and is set in MaxNativeAttribs. It's always 2 colors + N generic
208 * attributes. The GLSL compiler never uses COLORn for varyings, so we
209 * subtract the 2 colors to get the maximum number of varyings (generic
210 * attributes) supported by a driver. */
211 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS) - 2;
212 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
214 /* XXX we'll need a better query here someday */
215 if (screen->get_param(screen, PIPE_CAP_GLSL)) {
216 c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
217 c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
219 c->GLSLVersion = 120;
220 _mesa_override_glsl_version(st->ctx);
221 c->UniformBooleanTrue = ~0;
226 static GLboolean st_get_s3tc_override(void)
228 const char *override = _mesa_getenv("force_s3tc_enable");
229 if (override && !strcmp(override, "true"))
236 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
237 * which GL extensions are supported.
238 * Quite a few extensions are always supported because they are standard
239 * features or can be built on top of other gallium features.
240 * Some fine tuning may still be needed.
242 void st_init_extensions(struct st_context *st)
244 struct pipe_screen *screen = st->pipe->screen;
245 struct gl_context *ctx = st->ctx;
249 * Extensions that are supported by all Gallium drivers:
251 ctx->Extensions.ARB_copy_buffer = GL_TRUE;
252 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
253 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
254 ctx->Extensions.ARB_fragment_program = GL_TRUE;
255 ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
256 ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
257 ctx->Extensions.ARB_sampler_objects = GL_TRUE;
258 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
259 ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
260 ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
261 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
262 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
263 ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
264 ctx->Extensions.ARB_vertex_program = GL_TRUE;
265 ctx->Extensions.ARB_window_pos = GL_TRUE;
267 ctx->Extensions.EXT_blend_color = GL_TRUE;
268 ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
269 ctx->Extensions.EXT_blend_minmax = GL_TRUE;
270 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
271 ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
272 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
273 ctx->Extensions.EXT_fog_coord = GL_TRUE;
274 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
275 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
276 ctx->Extensions.EXT_point_parameters = GL_TRUE;
277 ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
278 ctx->Extensions.EXT_secondary_color = GL_TRUE;
279 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
280 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
282 ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
284 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
286 ctx->Extensions.MESA_pack_invert = GL_TRUE;
288 ctx->Extensions.NV_blend_square = GL_TRUE;
289 ctx->Extensions.NV_texgen_reflection = GL_TRUE;
290 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
291 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
293 /* possibly could support the following two */
294 ctx->Extensions.NV_vertex_program = GL_TRUE;
295 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
298 #if FEATURE_OES_EGL_image
299 ctx->Extensions.OES_EGL_image = GL_TRUE;
301 #if FEATURE_OES_draw_texture
302 ctx->Extensions.OES_draw_texture = GL_TRUE;
306 * Extensions that depend on the driver/hardware:
308 if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
309 ctx->Extensions.ARB_draw_buffers = GL_TRUE;
312 if (screen->get_param(screen, PIPE_CAP_TEXTURE_SWIZZLE) > 0) {
313 ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
316 if (screen->get_param(screen, PIPE_CAP_GLSL)) {
317 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
318 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
319 ctx->Extensions.ARB_shader_objects = GL_TRUE;
320 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
321 ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
322 ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
325 if (screen->get_param(screen, PIPE_CAP_BLEND_EQUATION_SEPARATE)) {
326 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
329 if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) {
330 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
331 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
334 if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
335 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
338 if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
339 ctx->Extensions.ATI_separate_stencil = GL_TRUE;
340 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
343 if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
344 ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
347 if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
348 ctx->Extensions.ARB_point_sprite = GL_TRUE;
349 /* GL_NV_point_sprite is not supported by gallium because we don't
350 * support the GL_POINT_SPRITE_R_MODE_NV option.
354 if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
355 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
356 ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
358 if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY)) {
359 ctx->Extensions.EXT_timer_query = GL_TRUE;
362 if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
363 ctx->Extensions.ARB_depth_texture = GL_TRUE;
364 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
365 ctx->Extensions.ARB_shadow = GL_TRUE;
366 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
367 /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
370 /* GL_EXT_packed_depth_stencil requires both the ability to render to
371 * a depth/stencil buffer and texture from depth/stencil source.
373 if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
375 PIPE_BIND_DEPTH_STENCIL) &&
376 screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
378 PIPE_BIND_SAMPLER_VIEW)) {
379 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
381 else if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
383 PIPE_BIND_DEPTH_STENCIL) &&
384 screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
386 PIPE_BIND_SAMPLER_VIEW)) {
387 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
390 /* float support - assume nothing exclusively supports 64-bit floats */
391 if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
393 PIPE_BIND_SAMPLER_VIEW |
394 PIPE_BIND_RENDER_TARGET) &&
395 screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
397 PIPE_BIND_SAMPLER_VIEW |
398 PIPE_BIND_RENDER_TARGET)) {
399 ctx->Extensions.ARB_texture_float = GL_TRUE;
403 if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
405 PIPE_BIND_SAMPLER_VIEW) ||
406 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
408 PIPE_BIND_SAMPLER_VIEW)) {
409 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
410 ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE;
411 if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
413 PIPE_BIND_RENDER_TARGET) ||
414 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
416 PIPE_BIND_RENDER_TARGET)) {
417 ctx->Extensions.EXT_framebuffer_sRGB = GL_TRUE;
418 ctx->Const.sRGBCapable = GL_TRUE;
422 if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
424 PIPE_BIND_SAMPLER_VIEW)) {
425 ctx->Extensions.ARB_texture_rg = GL_TRUE;
429 if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
431 PIPE_BIND_SAMPLER_VIEW) &&
432 (ctx->Mesa_DXTn || st_get_s3tc_override())) {
433 ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
434 ctx->Extensions.S3_s3tc = GL_TRUE;
437 if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM,
439 PIPE_BIND_SAMPLER_VIEW) &&
440 screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM,
442 PIPE_BIND_SAMPLER_VIEW) &&
443 screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM,
445 PIPE_BIND_SAMPLER_VIEW) &&
446 screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM,
448 PIPE_BIND_SAMPLER_VIEW)
450 ctx->Extensions.ARB_texture_compression_rgtc = GL_TRUE;
453 if (screen->is_format_supported(screen, PIPE_FORMAT_LATC1_UNORM,
455 PIPE_BIND_SAMPLER_VIEW) &&
456 screen->is_format_supported(screen, PIPE_FORMAT_LATC1_SNORM,
458 PIPE_BIND_SAMPLER_VIEW) &&
459 screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
461 PIPE_BIND_SAMPLER_VIEW) &&
462 screen->is_format_supported(screen, PIPE_FORMAT_LATC2_SNORM,
464 PIPE_BIND_SAMPLER_VIEW)) {
465 ctx->Extensions.EXT_texture_compression_latc = GL_TRUE;
468 if (screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
470 PIPE_BIND_SAMPLER_VIEW)) {
471 ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE;
474 if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
476 PIPE_BIND_SAMPLER_VIEW)) {
477 ctx->Extensions.EXT_texture_snorm = GL_TRUE;
481 if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY,
483 PIPE_BIND_SAMPLER_VIEW) ||
484 screen->is_format_supported(screen, PIPE_FORMAT_YUYV,
486 PIPE_BIND_SAMPLER_VIEW)) {
487 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
490 /* GL_EXT_texture_array */
491 if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS) > 1) {
492 ctx->Extensions.EXT_texture_array = GL_TRUE;
493 ctx->Extensions.MESA_texture_array = GL_TRUE;
496 /* GL_ARB_framebuffer_object */
497 if (ctx->Extensions.EXT_packed_depth_stencil) {
498 /* we support always support GL_EXT_framebuffer_blit */
499 ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
502 if (st->pipe->render_condition) {
503 ctx->Extensions.NV_conditional_render = GL_TRUE;
506 if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_ENABLE)) {
507 ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
510 if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) {
511 ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE;
514 /* GL_ARB_half_float_vertex */
515 if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
517 PIPE_BIND_VERTEX_BUFFER)) {
518 ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
521 if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FIXED,
523 PIPE_BIND_VERTEX_BUFFER)) {
524 ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
527 if (screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_UNORM,
529 PIPE_BIND_VERTEX_BUFFER) &&
530 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_UNORM,
532 PIPE_BIND_VERTEX_BUFFER) &&
533 screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_SNORM,
535 PIPE_BIND_VERTEX_BUFFER) &&
536 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_SNORM,
538 PIPE_BIND_VERTEX_BUFFER) &&
539 screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_USCALED,
541 PIPE_BIND_VERTEX_BUFFER) &&
542 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_USCALED,
544 PIPE_BIND_VERTEX_BUFFER) &&
545 screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_SSCALED,
547 PIPE_BIND_VERTEX_BUFFER) &&
548 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_SSCALED,
550 PIPE_BIND_VERTEX_BUFFER)) {
551 ctx->Extensions.ARB_vertex_type_2_10_10_10_rev = GL_TRUE;
554 if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
555 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
556 ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
560 if (screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
561 ctx->Extensions.NV_primitive_restart = GL_TRUE;
564 if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) {
565 ctx->Extensions.ARB_depth_clamp = GL_TRUE;
568 /* This extension does not actually require support of floating point
569 * render targets, just clamping controls.
570 * Advertise this extension if either fragment color clamping is supported
571 * or no render targets having color values outside of the range [0, 1]
572 * are supported, in which case the fragment color clamping has no effect
575 if (screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL) ||
576 (!screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
578 PIPE_BIND_RENDER_TARGET) &&
579 !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SNORM,
581 PIPE_BIND_RENDER_TARGET) &&
582 !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
584 PIPE_BIND_RENDER_TARGET) &&
585 !screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
587 PIPE_BIND_RENDER_TARGET) &&
588 !screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
590 PIPE_BIND_RENDER_TARGET) &&
591 !screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
593 PIPE_BIND_RENDER_TARGET))) {
594 ctx->Extensions.ARB_color_buffer_float = GL_TRUE;
597 if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
598 ctx->Extensions.ARB_shader_stencil_export = GL_TRUE;
601 if (screen->get_param(screen, PIPE_CAP_TGSI_INSTANCEID)) {
602 ctx->Extensions.ARB_draw_instanced = GL_TRUE;
604 if (screen->get_param(screen, PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR)) {
605 ctx->Extensions.ARB_instanced_arrays = GL_TRUE;
608 if (screen->fence_finish) {
609 ctx->Extensions.ARB_sync = GL_TRUE;
612 if (st->pipe->texture_barrier) {
613 ctx->Extensions.NV_texture_barrier = GL_TRUE;
616 if (screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
618 PIPE_BIND_SAMPLER_VIEW)) {
619 ctx->Extensions.EXT_texture_shared_exponent = GL_TRUE;
622 if (screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
624 PIPE_BIND_RENDER_TARGET |
625 PIPE_BIND_SAMPLER_VIEW)) {
626 ctx->Extensions.EXT_packed_float = GL_TRUE;
629 /* Maximum sample count. */
630 for (i = 16; i > 0; --i) {
631 if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM,
633 PIPE_BIND_RENDER_TARGET)) {
634 ctx->Const.MaxSamples = i;
639 if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE)) {
640 ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
641 ctx->Extensions.AMD_seamless_cubemap_per_texture = GL_TRUE;
643 else if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP)) {
644 ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
647 if (screen->get_param(screen, PIPE_CAP_SM3)) {
648 ctx->Extensions.ARB_shader_texture_lod = GL_TRUE;
651 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
653 PIPE_BIND_DEPTH_STENCIL |
654 PIPE_BIND_SAMPLER_VIEW) &&
655 screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED,
657 PIPE_BIND_DEPTH_STENCIL |
658 PIPE_BIND_SAMPLER_VIEW)) {
659 ctx->Extensions.ARB_depth_buffer_float = GL_TRUE;