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;
306 if (ctx->API != API_OPENGL)
307 ctx->Extensions.OES_EGL_image_external = GL_TRUE;
309 #if FEATURE_OES_draw_texture
310 ctx->Extensions.OES_draw_texture = GL_TRUE;
314 * Extensions that depend on the driver/hardware:
316 if (screen->get_param(screen, PIPE_CAP_TEXTURE_SWIZZLE) > 0) {
317 ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
320 if (screen->get_param(screen, PIPE_CAP_GLSL)) {
321 ctx->Extensions.ARB_fragment_shader = GL_TRUE;
322 ctx->Extensions.ARB_vertex_shader = GL_TRUE;
323 ctx->Extensions.ARB_shader_objects = GL_TRUE;
324 ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
325 ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
326 ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
329 if (screen->get_param(screen, PIPE_CAP_BLEND_EQUATION_SEPARATE)) {
330 ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
333 if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) {
334 ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
335 ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
338 if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
339 ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
342 if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
343 ctx->Extensions.ATI_separate_stencil = GL_TRUE;
344 ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
347 if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
348 ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
351 if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
352 ctx->Extensions.ARB_point_sprite = GL_TRUE;
353 /* GL_NV_point_sprite is not supported by gallium because we don't
354 * support the GL_POINT_SPRITE_R_MODE_NV option.
358 if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
359 ctx->Extensions.ARB_occlusion_query = GL_TRUE;
360 ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
362 if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY)) {
363 ctx->Extensions.EXT_timer_query = GL_TRUE;
366 if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
367 ctx->Extensions.ARB_depth_texture = GL_TRUE;
368 ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
369 ctx->Extensions.ARB_shadow = GL_TRUE;
370 ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
371 /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
374 /* GL_EXT_packed_depth_stencil requires both the ability to render to
375 * a depth/stencil buffer and texture from depth/stencil source.
377 if (screen->is_format_supported(screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
379 PIPE_BIND_DEPTH_STENCIL) &&
380 screen->is_format_supported(screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
382 PIPE_BIND_SAMPLER_VIEW)) {
383 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
385 else if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
387 PIPE_BIND_DEPTH_STENCIL) &&
388 screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
390 PIPE_BIND_SAMPLER_VIEW)) {
391 ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
394 /* float support - assume nothing exclusively supports 64-bit floats */
395 if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
397 PIPE_BIND_SAMPLER_VIEW |
398 PIPE_BIND_RENDER_TARGET) &&
399 screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
401 PIPE_BIND_SAMPLER_VIEW |
402 PIPE_BIND_RENDER_TARGET)) {
403 ctx->Extensions.ARB_texture_float = GL_TRUE;
407 if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
409 PIPE_BIND_SAMPLER_VIEW) ||
410 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
412 PIPE_BIND_SAMPLER_VIEW)) {
413 ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
414 ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE;
415 if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
417 PIPE_BIND_RENDER_TARGET) ||
418 screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
420 PIPE_BIND_RENDER_TARGET)) {
421 ctx->Extensions.EXT_framebuffer_sRGB = GL_TRUE;
422 ctx->Const.sRGBCapable = GL_TRUE;
426 if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
428 PIPE_BIND_SAMPLER_VIEW)) {
429 ctx->Extensions.ARB_texture_rg = GL_TRUE;
433 if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
435 PIPE_BIND_SAMPLER_VIEW) &&
436 (ctx->Mesa_DXTn || st_get_s3tc_override())) {
437 ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
438 ctx->Extensions.S3_s3tc = GL_TRUE;
441 if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM,
443 PIPE_BIND_SAMPLER_VIEW) &&
444 screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM,
446 PIPE_BIND_SAMPLER_VIEW) &&
447 screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM,
449 PIPE_BIND_SAMPLER_VIEW) &&
450 screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM,
452 PIPE_BIND_SAMPLER_VIEW)
454 ctx->Extensions.ARB_texture_compression_rgtc = GL_TRUE;
457 if (screen->is_format_supported(screen, PIPE_FORMAT_LATC1_UNORM,
459 PIPE_BIND_SAMPLER_VIEW) &&
460 screen->is_format_supported(screen, PIPE_FORMAT_LATC1_SNORM,
462 PIPE_BIND_SAMPLER_VIEW) &&
463 screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
465 PIPE_BIND_SAMPLER_VIEW) &&
466 screen->is_format_supported(screen, PIPE_FORMAT_LATC2_SNORM,
468 PIPE_BIND_SAMPLER_VIEW)) {
469 ctx->Extensions.EXT_texture_compression_latc = GL_TRUE;
472 if (screen->is_format_supported(screen, PIPE_FORMAT_LATC2_UNORM,
474 PIPE_BIND_SAMPLER_VIEW)) {
475 ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE;
478 if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
480 PIPE_BIND_SAMPLER_VIEW)) {
481 ctx->Extensions.EXT_texture_snorm = GL_TRUE;
485 if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY,
487 PIPE_BIND_SAMPLER_VIEW) ||
488 screen->is_format_supported(screen, PIPE_FORMAT_YUYV,
490 PIPE_BIND_SAMPLER_VIEW)) {
491 ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
494 /* GL_EXT_texture_array */
495 if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS) > 1) {
496 ctx->Extensions.EXT_texture_array = GL_TRUE;
497 ctx->Extensions.MESA_texture_array = GL_TRUE;
500 /* GL_ARB_framebuffer_object */
501 if (ctx->Extensions.EXT_packed_depth_stencil) {
502 /* we support always support GL_EXT_framebuffer_blit */
503 ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
506 if (screen->get_param(screen, PIPE_CAP_CONDITIONAL_RENDER)) {
507 ctx->Extensions.NV_conditional_render = GL_TRUE;
510 if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_ENABLE)) {
511 ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
514 if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) {
515 ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE;
518 /* GL_ARB_half_float_vertex */
519 if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
521 PIPE_BIND_VERTEX_BUFFER)) {
522 ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
525 if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FIXED,
527 PIPE_BIND_VERTEX_BUFFER)) {
528 ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
531 if (screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_UNORM,
533 PIPE_BIND_VERTEX_BUFFER) &&
534 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_UNORM,
536 PIPE_BIND_VERTEX_BUFFER) &&
537 screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_SNORM,
539 PIPE_BIND_VERTEX_BUFFER) &&
540 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_SNORM,
542 PIPE_BIND_VERTEX_BUFFER) &&
543 screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_USCALED,
545 PIPE_BIND_VERTEX_BUFFER) &&
546 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_USCALED,
548 PIPE_BIND_VERTEX_BUFFER) &&
549 screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_SSCALED,
551 PIPE_BIND_VERTEX_BUFFER) &&
552 screen->is_format_supported(screen, PIPE_FORMAT_B10G10R10A2_SSCALED,
554 PIPE_BIND_VERTEX_BUFFER)) {
555 ctx->Extensions.ARB_vertex_type_2_10_10_10_rev = GL_TRUE;
558 if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY,
559 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
560 #if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
561 ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
565 ctx->Extensions.NV_primitive_restart = GL_TRUE;
566 if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
567 st->sw_primitive_restart = GL_TRUE;
570 if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) {
571 ctx->Extensions.ARB_depth_clamp = GL_TRUE;
574 /* This extension does not actually require support of floating point
575 * render targets, just clamping controls.
576 * Advertise this extension if either fragment color clamping is supported
577 * or no render targets having color values outside of the range [0, 1]
578 * are supported, in which case the fragment color clamping has no effect
581 if (screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL) ||
582 (!screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SNORM,
584 PIPE_BIND_RENDER_TARGET) &&
585 !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SNORM,
587 PIPE_BIND_RENDER_TARGET) &&
588 !screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
590 PIPE_BIND_RENDER_TARGET) &&
591 !screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
593 PIPE_BIND_RENDER_TARGET) &&
594 !screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
596 PIPE_BIND_RENDER_TARGET) &&
597 !screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
599 PIPE_BIND_RENDER_TARGET))) {
600 ctx->Extensions.ARB_color_buffer_float = GL_TRUE;
603 if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
604 ctx->Extensions.ARB_shader_stencil_export = GL_TRUE;
607 if (screen->get_param(screen, PIPE_CAP_TGSI_INSTANCEID)) {
608 ctx->Extensions.ARB_draw_instanced = GL_TRUE;
610 if (screen->get_param(screen, PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR)) {
611 ctx->Extensions.ARB_instanced_arrays = GL_TRUE;
614 if (screen->fence_finish) {
615 ctx->Extensions.ARB_sync = GL_TRUE;
618 if (screen->get_param(screen, PIPE_CAP_TEXTURE_BARRIER)) {
619 ctx->Extensions.NV_texture_barrier = GL_TRUE;
622 if (screen->is_format_supported(screen, PIPE_FORMAT_R9G9B9E5_FLOAT,
624 PIPE_BIND_SAMPLER_VIEW)) {
625 ctx->Extensions.EXT_texture_shared_exponent = GL_TRUE;
628 if (screen->is_format_supported(screen, PIPE_FORMAT_R11G11B10_FLOAT,
630 PIPE_BIND_RENDER_TARGET |
631 PIPE_BIND_SAMPLER_VIEW)) {
632 ctx->Extensions.EXT_packed_float = GL_TRUE;
635 /* Maximum sample count. */
636 for (i = 16; i > 0; --i) {
637 if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM,
639 PIPE_BIND_RENDER_TARGET)) {
640 ctx->Const.MaxSamples = i;
645 if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE)) {
646 ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
647 ctx->Extensions.AMD_seamless_cubemap_per_texture = GL_TRUE;
649 else if (screen->get_param(screen, PIPE_CAP_SEAMLESS_CUBE_MAP)) {
650 ctx->Extensions.ARB_seamless_cube_map = GL_TRUE;
653 if (screen->get_param(screen, PIPE_CAP_SM3)) {
654 ctx->Extensions.ARB_shader_texture_lod = GL_TRUE;
657 if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
659 PIPE_BIND_DEPTH_STENCIL |
660 PIPE_BIND_SAMPLER_VIEW) &&
661 screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT_S8X24_UINT,
663 PIPE_BIND_DEPTH_STENCIL |
664 PIPE_BIND_SAMPLER_VIEW)) {
665 ctx->Extensions.ARB_depth_buffer_float = GL_TRUE;