diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_extensions.c')
| -rw-r--r-- | mesalib/src/mesa/state_tracker/st_extensions.c | 961 |
1 files changed, 485 insertions, 476 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_extensions.c b/mesalib/src/mesa/state_tracker/st_extensions.c index a81cbe85d..76bd42cf8 100644 --- a/mesalib/src/mesa/state_tracker/st_extensions.c +++ b/mesalib/src/mesa/state_tracker/st_extensions.c @@ -1,476 +1,485 @@ -/************************************************************************** - * - * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. - * Copyright (c) 2008 VMware, Inc. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sub license, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. - * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR - * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, - * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE - * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - **************************************************************************/ - -#include "main/imports.h" -#include "main/context.h" -#include "main/macros.h" -#include "main/mfeatures.h" - -#include "pipe/p_context.h" -#include "pipe/p_defines.h" -#include "pipe/p_screen.h" - -#include "st_context.h" -#include "st_extensions.h" - - -static int _min(int a, int b) -{ - return (a < b) ? a : b; -} - -static float _maxf(float a, float b) -{ - return (a > b) ? a : b; -} - -static int _clamp(int a, int min, int max) -{ - if (a < min) - return min; - else if (a > max) - return max; - else - return a; -} - - -/** - * Query driver to get implementation limits. - * Note that we have to limit/clamp against Mesa's internal limits too. - */ -void st_init_limits(struct st_context *st) -{ - struct pipe_screen *screen = st->pipe->screen; - struct gl_constants *c = &st->ctx->Const; - gl_shader_type sh; - - c->MaxTextureLevels - = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS), - MAX_TEXTURE_LEVELS); - - c->Max3DTextureLevels - = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS), - MAX_3D_TEXTURE_LEVELS); - - c->MaxCubeTextureLevels - = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS), - MAX_CUBE_TEXTURE_LEVELS); - - c->MaxTextureRectSize - = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE); - - c->MaxTextureImageUnits - = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS), - MAX_TEXTURE_IMAGE_UNITS); - - c->MaxVertexTextureImageUnits - = _min(screen->get_param(screen, PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS), - MAX_VERTEX_TEXTURE_IMAGE_UNITS); - - c->MaxCombinedTextureImageUnits - = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS), - MAX_COMBINED_TEXTURE_IMAGE_UNITS); - - c->MaxTextureCoordUnits - = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS); - - c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits); - - c->MaxDrawBuffers - = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), - 1, MAX_DRAW_BUFFERS); - - c->MaxLineWidth - = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH)); - c->MaxLineWidthAA - = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA)); - - c->MaxPointSize - = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH)); - c->MaxPointSizeAA - = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA)); - /* called after _mesa_create_context/_mesa_init_point, fix default user - * settable max point size up - */ - st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA); - /* these are not queryable. Note that GL basically mandates a 1.0 minimum - * for non-aa sizes, but we can go down to 0.0 for aa points. - */ - c->MinPointSize = 1.0f; - c->MinPointSizeAA = 0.0f; - - c->MaxTextureMaxAnisotropy - = _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY)); - - c->MaxTextureLodBias - = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS); - - c->MaxDrawBuffers - = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), - 1, MAX_DRAW_BUFFERS); - - /* Quads always follow GL provoking rules. */ - c->QuadsFollowProvokingVertexConvention = GL_FALSE; - - for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) { - struct gl_shader_compiler_options *options = - &st->ctx->ShaderCompilerOptions[sh]; - struct gl_program_constants *pc; - - switch (sh) { - case PIPE_SHADER_FRAGMENT: - pc = &c->FragmentProgram; - break; - case PIPE_SHADER_VERTEX: - pc = &c->VertexProgram; - break; - case PIPE_SHADER_GEOMETRY: - pc = &c->GeometryProgram; - break; - default: - assert(0); - continue; - } - - pc->MaxNativeInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS); - pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS); - pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS); - pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS); - pc->MaxNativeAttribs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS); - pc->MaxNativeTemps = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS); - pc->MaxNativeAddressRegs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS); - pc->MaxNativeParameters = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS); - pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS); - - options->EmitNoNoise = TRUE; - - /* TODO: make these more fine-grained if anyone needs it */ - options->EmitNoIfs = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH); - options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH); - options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES); - options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES); - - options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED); - - options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh, - PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR); - options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh, - PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR); - options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh, - PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR); - options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh, - PIPE_SHADER_CAP_INDIRECT_CONST_ADDR); - - if(options->EmitNoLoops) - options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536); - } - - /* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs - * and is set in MaxNativeAttribs. It's always 2 colors + N generic - * attributes. The GLSL compiler never uses COLORn for varyings, so we - * subtract the 2 colors to get the maximum number of varyings (generic - * attributes) supported by a driver. */ - c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS) - 2; - c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING); - - /* XXX we'll need a better query here someday */ - if (screen->get_param(screen, PIPE_CAP_GLSL)) { - c->GLSLVersion = 120; - } -} - - -/** - * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine - * which GL extensions are supported. - * Quite a few extensions are always supported because they are standard - * features or can be built on top of other gallium features. - * Some fine tuning may still be needed. - */ -void st_init_extensions(struct st_context *st) -{ - struct pipe_screen *screen = st->pipe->screen; - struct gl_context *ctx = st->ctx; - - /* - * Extensions that are supported by all Gallium drivers: - */ - ctx->Extensions.ARB_copy_buffer = GL_TRUE; - ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE; - ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; - ctx->Extensions.ARB_fragment_program = GL_TRUE; - ctx->Extensions.ARB_half_float_pixel = GL_TRUE; - ctx->Extensions.ARB_map_buffer_range = GL_TRUE; - ctx->Extensions.ARB_multisample = GL_TRUE; - ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */ - ctx->Extensions.ARB_texture_compression = GL_TRUE; - ctx->Extensions.ARB_texture_cube_map = GL_TRUE; - ctx->Extensions.ARB_texture_env_combine = GL_TRUE; - ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; - ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; - ctx->Extensions.ARB_vertex_array_object = GL_TRUE; - ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE; - ctx->Extensions.ARB_vertex_program = GL_TRUE; - ctx->Extensions.ARB_window_pos = GL_TRUE; - - ctx->Extensions.EXT_blend_color = GL_TRUE; - ctx->Extensions.EXT_blend_func_separate = GL_TRUE; - ctx->Extensions.EXT_blend_logic_op = GL_TRUE; - ctx->Extensions.EXT_blend_minmax = GL_TRUE; - ctx->Extensions.EXT_blend_subtract = GL_TRUE; - ctx->Extensions.EXT_framebuffer_blit = GL_TRUE; - ctx->Extensions.EXT_framebuffer_object = GL_TRUE; - ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE; - ctx->Extensions.EXT_fog_coord = GL_TRUE; - ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE; - ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE; - ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; - ctx->Extensions.EXT_point_parameters = GL_TRUE; - ctx->Extensions.EXT_provoking_vertex = GL_TRUE; - ctx->Extensions.EXT_secondary_color = GL_TRUE; - ctx->Extensions.EXT_stencil_wrap = GL_TRUE; - ctx->Extensions.EXT_texture_env_add = GL_TRUE; - ctx->Extensions.EXT_texture_env_combine = GL_TRUE; - ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; - ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; - ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE; - if (ctx->API == API_OPENGLES || ctx->API == API_OPENGLES2) - ctx->Extensions.EXT_texture_format_BGRA8888 = GL_TRUE; - - ctx->Extensions.APPLE_vertex_array_object = GL_TRUE; - - ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; - - ctx->Extensions.MESA_pack_invert = GL_TRUE; - - ctx->Extensions.NV_blend_square = GL_TRUE; - ctx->Extensions.NV_texgen_reflection = GL_TRUE; - ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; - ctx->Extensions.NV_texture_rectangle = GL_TRUE; -#if 0 - /* possibly could support the following two */ - ctx->Extensions.NV_vertex_program = GL_TRUE; - ctx->Extensions.NV_vertex_program1_1 = GL_TRUE; -#endif - -#if FEATURE_OES_EGL_image - ctx->Extensions.OES_EGL_image = GL_TRUE; -#endif -#if FEATURE_OES_draw_texture - ctx->Extensions.OES_draw_texture = GL_TRUE; -#endif - - ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; - - /* - * Extensions that depend on the driver/hardware: - */ - if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) { - ctx->Extensions.ARB_draw_buffers = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_TEXTURE_SWIZZLE) > 0) { - ctx->Extensions.EXT_texture_swizzle = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_GLSL)) { - ctx->Extensions.ARB_fragment_shader = GL_TRUE; - ctx->Extensions.ARB_vertex_shader = GL_TRUE; - ctx->Extensions.ARB_shader_objects = GL_TRUE; - ctx->Extensions.ARB_shading_language_100 = GL_TRUE; - ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE; - ctx->Extensions.EXT_separate_shader_objects = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_REPEAT) > 0) { - ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_BLEND_EQUATION_SEPARATE)) { - ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) { - ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE; - ctx->Extensions.ATI_texture_mirror_once = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) { - ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS) > 1) { - ctx->Extensions.ARB_multitexture = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) { - ctx->Extensions.ATI_separate_stencil = GL_TRUE; - ctx->Extensions.EXT_stencil_two_side = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) { - ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) { - ctx->Extensions.ARB_point_sprite = GL_TRUE; - /* GL_NV_point_sprite is not supported by gallium because we don't - * support the GL_POINT_SPRITE_R_MODE_NV option. - */ - } - - if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) { - ctx->Extensions.ARB_occlusion_query = GL_TRUE; - ctx->Extensions.ARB_occlusion_query2 = GL_TRUE; - } - if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY)) { - ctx->Extensions.EXT_timer_query = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) { - ctx->Extensions.ARB_depth_texture = GL_TRUE; - ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE; - ctx->Extensions.ARB_shadow = GL_TRUE; - ctx->Extensions.EXT_shadow_funcs = GL_TRUE; - /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/ - } - - /* GL_EXT_packed_depth_stencil requires both the ability to render to - * a depth/stencil buffer and texture from depth/stencil source. - */ - if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_DEPTH_STENCIL, 0) && - screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0)) { - ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE; - } - else if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_DEPTH_STENCIL, 0) && - screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0)) { - ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE; - } - - /* sRGB support */ - if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0) || - screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0)) { - ctx->Extensions.EXT_texture_sRGB = GL_TRUE; - ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE; - } - - if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0)) { - ctx->Extensions.ARB_texture_rg = GL_TRUE; - } - - /* s3tc support */ - if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0) && - (ctx->Mesa_DXTn || - screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_RENDER_TARGET, 0))) { - ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE; - ctx->Extensions.S3_s3tc = GL_TRUE; - } - - /* ycbcr support */ - if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0) || - screen->is_format_supported(screen, PIPE_FORMAT_YUYV, - PIPE_TEXTURE_2D, 0, - PIPE_BIND_SAMPLER_VIEW, 0)) { - ctx->Extensions.MESA_ycbcr_texture = GL_TRUE; - } - - /* GL_EXT_texture_array */ - if (screen->get_param(screen, PIPE_CAP_ARRAY_TEXTURES)) { - ctx->Extensions.EXT_texture_array = GL_TRUE; - ctx->Extensions.MESA_texture_array = GL_TRUE; - } - - /* GL_ARB_framebuffer_object */ - if (ctx->Extensions.EXT_packed_depth_stencil) { - /* we support always support GL_EXT_framebuffer_blit */ - ctx->Extensions.ARB_framebuffer_object = GL_TRUE; - } - - if (st->pipe->render_condition) { - ctx->Extensions.NV_conditional_render = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_ENABLE)) { - ctx->Extensions.EXT_draw_buffers2 = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) { - ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE; - } - - /* GL_ARB_half_float_vertex */ - if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT, - PIPE_BUFFER, 0, - PIPE_BIND_VERTEX_BUFFER, 0)) { - ctx->Extensions.ARB_half_float_vertex = GL_TRUE; - } - - if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) { -#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */ - ctx->Extensions.ARB_geometry_shader4 = GL_TRUE; -#endif - } - - if (screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) { - ctx->Extensions.NV_primitive_restart = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) { - ctx->Extensions.ARB_depth_clamp = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) { - ctx->Extensions.ARB_shader_stencil_export = GL_TRUE; - } - - if (screen->get_param(screen, PIPE_CAP_INSTANCED_DRAWING)) { - ctx->Extensions.ARB_draw_instanced = GL_TRUE; - ctx->Extensions.ARB_instanced_arrays = GL_TRUE; - } -} +/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright (c) 2008 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "main/mfeatures.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_screen.h"
+
+#include "st_context.h"
+#include "st_extensions.h"
+
+
+static int _min(int a, int b)
+{
+ return (a < b) ? a : b;
+}
+
+static float _maxf(float a, float b)
+{
+ return (a > b) ? a : b;
+}
+
+static int _clamp(int a, int min, int max)
+{
+ if (a < min)
+ return min;
+ else if (a > max)
+ return max;
+ else
+ return a;
+}
+
+
+/**
+ * Query driver to get implementation limits.
+ * Note that we have to limit/clamp against Mesa's internal limits too.
+ */
+void st_init_limits(struct st_context *st)
+{
+ struct pipe_screen *screen = st->pipe->screen;
+ struct gl_constants *c = &st->ctx->Const;
+ gl_shader_type sh;
+
+ c->MaxTextureLevels
+ = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
+ MAX_TEXTURE_LEVELS);
+
+ c->Max3DTextureLevels
+ = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
+ MAX_3D_TEXTURE_LEVELS);
+
+ c->MaxCubeTextureLevels
+ = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
+ MAX_CUBE_TEXTURE_LEVELS);
+
+ c->MaxTextureRectSize
+ = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
+
+ c->MaxTextureImageUnits
+ = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
+ MAX_TEXTURE_IMAGE_UNITS);
+
+ c->MaxVertexTextureImageUnits
+ = _min(screen->get_param(screen, PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS),
+ MAX_VERTEX_TEXTURE_IMAGE_UNITS);
+
+ c->MaxCombinedTextureImageUnits
+ = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS),
+ MAX_COMBINED_TEXTURE_IMAGE_UNITS);
+
+ c->MaxTextureCoordUnits
+ = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS);
+
+ c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits);
+
+ c->MaxDrawBuffers
+ = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
+ 1, MAX_DRAW_BUFFERS);
+
+ c->MaxLineWidth
+ = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
+ c->MaxLineWidthAA
+ = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
+
+ c->MaxPointSize
+ = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
+ c->MaxPointSizeAA
+ = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
+ /* called after _mesa_create_context/_mesa_init_point, fix default user
+ * settable max point size up
+ */
+ st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA);
+ /* these are not queryable. Note that GL basically mandates a 1.0 minimum
+ * for non-aa sizes, but we can go down to 0.0 for aa points.
+ */
+ c->MinPointSize = 1.0f;
+ c->MinPointSizeAA = 0.0f;
+
+ c->MaxTextureMaxAnisotropy
+ = _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));
+
+ c->MaxTextureLodBias
+ = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);
+
+ c->MaxDrawBuffers
+ = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
+ 1, MAX_DRAW_BUFFERS);
+
+ /* Quads always follow GL provoking rules. */
+ c->QuadsFollowProvokingVertexConvention = GL_FALSE;
+
+ for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) {
+ struct gl_shader_compiler_options *options =
+ &st->ctx->ShaderCompilerOptions[sh];
+ struct gl_program_constants *pc;
+
+ switch (sh) {
+ case PIPE_SHADER_FRAGMENT:
+ pc = &c->FragmentProgram;
+ break;
+ case PIPE_SHADER_VERTEX:
+ pc = &c->VertexProgram;
+ break;
+ case PIPE_SHADER_GEOMETRY:
+ pc = &c->GeometryProgram;
+ break;
+ default:
+ assert(0);
+ continue;
+ }
+
+ pc->MaxNativeInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS);
+ pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS);
+ pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS);
+ pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS);
+ pc->MaxNativeAttribs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS);
+ pc->MaxNativeTemps = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
+ pc->MaxNativeAddressRegs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS);
+ pc->MaxNativeParameters = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS);
+ pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS);
+
+ options->EmitNoNoise = TRUE;
+
+ /* TODO: make these more fine-grained if anyone needs it */
+ options->EmitNoIfs = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
+ options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
+ options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
+ options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES);
+
+ options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
+
+ options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh,
+ PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR);
+ options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh,
+ PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR);
+ options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh,
+ PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR);
+ options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh,
+ PIPE_SHADER_CAP_INDIRECT_CONST_ADDR);
+
+ if(options->EmitNoLoops)
+ options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
+ }
+
+ /* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs
+ * and is set in MaxNativeAttribs. It's always 2 colors + N generic
+ * attributes. The GLSL compiler never uses COLORn for varyings, so we
+ * subtract the 2 colors to get the maximum number of varyings (generic
+ * attributes) supported by a driver. */
+ c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS) - 2;
+ c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
+
+ /* XXX we'll need a better query here someday */
+ if (screen->get_param(screen, PIPE_CAP_GLSL)) {
+ c->GLSLVersion = 120;
+ }
+}
+
+
+/**
+ * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine
+ * which GL extensions are supported.
+ * Quite a few extensions are always supported because they are standard
+ * features or can be built on top of other gallium features.
+ * Some fine tuning may still be needed.
+ */
+void st_init_extensions(struct st_context *st)
+{
+ struct pipe_screen *screen = st->pipe->screen;
+ struct gl_context *ctx = st->ctx;
+
+ /*
+ * Extensions that are supported by all Gallium drivers:
+ */
+ ctx->Extensions.ARB_copy_buffer = GL_TRUE;
+ ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
+ ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
+ ctx->Extensions.ARB_fragment_program = GL_TRUE;
+ ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
+ ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
+ ctx->Extensions.ARB_multisample = GL_TRUE;
+ ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
+ ctx->Extensions.ARB_texture_compression = GL_TRUE;
+ ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
+ ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
+ ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
+ ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
+ ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
+ ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;
+ ctx->Extensions.ARB_vertex_program = GL_TRUE;
+ ctx->Extensions.ARB_window_pos = GL_TRUE;
+
+ ctx->Extensions.EXT_blend_color = GL_TRUE;
+ ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
+ ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
+ ctx->Extensions.EXT_blend_minmax = GL_TRUE;
+ ctx->Extensions.EXT_blend_subtract = GL_TRUE;
+ ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
+ ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
+ ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
+ ctx->Extensions.EXT_fog_coord = GL_TRUE;
+ ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
+ ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;
+ ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
+ ctx->Extensions.EXT_point_parameters = GL_TRUE;
+ ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
+ ctx->Extensions.EXT_secondary_color = GL_TRUE;
+ ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
+ ctx->Extensions.EXT_texture_env_add = GL_TRUE;
+ ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
+ ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
+ ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
+ ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
+ if (ctx->API == API_OPENGLES || ctx->API == API_OPENGLES2)
+ ctx->Extensions.EXT_texture_format_BGRA8888 = GL_TRUE;
+
+ ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
+
+ ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
+
+ ctx->Extensions.MESA_pack_invert = GL_TRUE;
+
+ ctx->Extensions.NV_blend_square = GL_TRUE;
+ ctx->Extensions.NV_texgen_reflection = GL_TRUE;
+ ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
+ ctx->Extensions.NV_texture_rectangle = GL_TRUE;
+#if 0
+ /* possibly could support the following two */
+ ctx->Extensions.NV_vertex_program = GL_TRUE;
+ ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
+#endif
+
+#if FEATURE_OES_EGL_image
+ ctx->Extensions.OES_EGL_image = GL_TRUE;
+#endif
+#if FEATURE_OES_draw_texture
+ ctx->Extensions.OES_draw_texture = GL_TRUE;
+#endif
+
+ ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;
+
+ /*
+ * Extensions that depend on the driver/hardware:
+ */
+ if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
+ ctx->Extensions.ARB_draw_buffers = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_TEXTURE_SWIZZLE) > 0) {
+ ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_GLSL)) {
+ ctx->Extensions.ARB_fragment_shader = GL_TRUE;
+ ctx->Extensions.ARB_vertex_shader = GL_TRUE;
+ ctx->Extensions.ARB_shader_objects = GL_TRUE;
+ ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
+ ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
+ ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_REPEAT) > 0) {
+ ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_BLEND_EQUATION_SEPARATE)) {
+ ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) {
+ ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
+ ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
+ ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS) > 1) {
+ ctx->Extensions.ARB_multitexture = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
+ ctx->Extensions.ATI_separate_stencil = GL_TRUE;
+ ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
+ ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
+ ctx->Extensions.ARB_point_sprite = GL_TRUE;
+ /* GL_NV_point_sprite is not supported by gallium because we don't
+ * support the GL_POINT_SPRITE_R_MODE_NV option.
+ */
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
+ ctx->Extensions.ARB_occlusion_query = GL_TRUE;
+ ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
+ }
+ if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY)) {
+ ctx->Extensions.EXT_timer_query = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
+ ctx->Extensions.ARB_depth_texture = GL_TRUE;
+ ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
+ ctx->Extensions.ARB_shadow = GL_TRUE;
+ ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
+ /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
+ }
+
+ /* GL_EXT_packed_depth_stencil requires both the ability to render to
+ * a depth/stencil buffer and texture from depth/stencil source.
+ */
+ if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_DEPTH_STENCIL, 0) &&
+ screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0)) {
+ ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
+ }
+ else if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_DEPTH_STENCIL, 0) &&
+ screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0)) {
+ ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
+ }
+
+ /* sRGB support */
+ if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0) ||
+ screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0)) {
+ ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
+ ctx->Extensions.EXT_texture_sRGB_decode = GL_TRUE;
+ if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_RENDER_TARGET, 0) ||
+ screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_RENDER_TARGET, 0)) {
+ ctx->Extensions.EXT_framebuffer_sRGB = GL_TRUE;
+ ctx->Const.sRGBCapable = GL_TRUE;
+ }
+ }
+
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0)) {
+ ctx->Extensions.ARB_texture_rg = GL_TRUE;
+ }
+
+ /* s3tc support */
+ if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0) &&
+ (ctx->Mesa_DXTn ||
+ screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_RENDER_TARGET, 0))) {
+ ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
+ ctx->Extensions.S3_s3tc = GL_TRUE;
+ }
+
+ /* ycbcr support */
+ if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0) ||
+ screen->is_format_supported(screen, PIPE_FORMAT_YUYV,
+ PIPE_TEXTURE_2D, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0)) {
+ ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
+ }
+
+ /* GL_EXT_texture_array */
+ if (screen->get_param(screen, PIPE_CAP_ARRAY_TEXTURES)) {
+ ctx->Extensions.EXT_texture_array = GL_TRUE;
+ ctx->Extensions.MESA_texture_array = GL_TRUE;
+ }
+
+ /* GL_ARB_framebuffer_object */
+ if (ctx->Extensions.EXT_packed_depth_stencil) {
+ /* we support always support GL_EXT_framebuffer_blit */
+ ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
+ }
+
+ if (st->pipe->render_condition) {
+ ctx->Extensions.NV_conditional_render = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_ENABLE)) {
+ ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) {
+ ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE;
+ }
+
+ /* GL_ARB_half_float_vertex */
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
+ PIPE_BUFFER, 0,
+ PIPE_BIND_VERTEX_BUFFER, 0)) {
+ ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
+ }
+
+ if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
+#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */
+ ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
+#endif
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) {
+ ctx->Extensions.NV_primitive_restart = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_DEPTH_CLAMP)) {
+ ctx->Extensions.ARB_depth_clamp = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
+ ctx->Extensions.ARB_shader_stencil_export = GL_TRUE;
+ }
+
+ if (screen->get_param(screen, PIPE_CAP_INSTANCED_DRAWING)) {
+ ctx->Extensions.ARB_draw_instanced = GL_TRUE;
+ ctx->Extensions.ARB_instanced_arrays = GL_TRUE;
+ }
+}
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