/************************************************************************** * * 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 "main/version.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->MaxArrayTextureLayers = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS); c->MaxTextureImageUnits = _min(screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS), MAX_TEXTURE_IMAGE_UNITS); c->MaxVertexTextureImageUnits = _min(screen->get_shader_param(screen, PIPE_SHADER_VERTEX, PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS), 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); /* Define max viewport size and max renderbuffer size in terms of * max texture size (note: max tex RECT size = max tex 2D size). * If this isn't true for some hardware we'll need new PIPE_CAP_ queries. */ c->MaxViewportWidth = c->MaxViewportHeight = c->MaxRenderbufferSize = c->MaxTextureRectSize; c->MaxDrawBuffers = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 1, MAX_DRAW_BUFFERS); c->MaxDualSourceDrawBuffers = _clamp(screen->get_param(screen, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS), 0, MAX_DRAW_BUFFERS); c->MaxLineWidth = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH)); c->MaxLineWidthAA = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_LINE_WIDTH_AA)); c->MaxPointSize = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_MAX_POINT_WIDTH)); c->MaxPointSizeAA = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAPF_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_CAPF_MAX_TEXTURE_ANISOTROPY)); c->MaxTextureLodBias = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS); c->MaxDrawBuffers = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 1, MAX_DRAW_BUFFERS); c->QuadsFollowProvokingVertexConvention = screen->get_param( screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION); 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); /* raise MaxParameters if native support is higher */ pc->MaxParameters = MAX2(pc->MaxParameters, pc->MaxNativeParameters); /* Gallium doesn't really care about local vs. env parameters so use the * same limits. */ pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS); pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS); options->EmitNoNoise = TRUE; /* TODO: make these more fine-grained if anyone needs it */ options->MaxIfDepth = 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); else options->MaxUnrollIterations = 255; /* SM3 limit */ options->LowerClipDistance = true; } /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number * of inputs. It's always 2 colors + N generic inputs. */ c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS); c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING); c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET); c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET); c->UniformBooleanTrue = ~0; c->MaxTransformFeedbackBuffers = screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS); c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers, MAX_FEEDBACK_BUFFERS); c->MaxTransformFeedbackSeparateComponents = screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS); c->MaxTransformFeedbackInterleavedComponents = screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS); c->StripTextureBorder = GL_TRUE; c->GLSLSkipStrictMaxUniformLimitCheck = screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS); c->GLSLSkipStrictMaxVaryingLimitCheck = screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS); } static GLboolean st_get_s3tc_override(void) { const char *override = _mesa_getenv("force_s3tc_enable"); if (override && !strcmp(override, "true")) return GL_TRUE; return GL_FALSE; } /** * Given a member \c x of struct gl_extensions, return offset of * \c x in bytes. */ #define o(x) offsetof(struct gl_extensions, x) struct st_extension_cap_mapping { int extension_offset; int cap; }; struct st_extension_format_mapping { int extension_offset[2]; enum pipe_format format[8]; /* If TRUE, at least one format must be supported for the extensions to be * advertised. If FALSE, all the formats must be supported. */ GLboolean need_at_least_one; }; /** * Enable extensions if certain pipe formats are supported by the driver. * What extensions will be enabled and what formats must be supported is * described by the array of st_extension_format_mapping. * * target and bind_flags are passed to is_format_supported. */ static void init_format_extensions(struct st_context *st, const struct st_extension_format_mapping *mapping, unsigned num_mappings, enum pipe_texture_target target, unsigned bind_flags) { struct pipe_screen *screen = st->pipe->screen; GLboolean *extensions = (GLboolean *) &st->ctx->Extensions; unsigned i; int j; int num_formats = Elements(mapping->format); int num_ext = Elements(mapping->extension_offset); for (i = 0; i < num_mappings; i++) { int num_supported = 0; /* Examine each format in the list. */ for (j = 0; j < num_formats && mapping[i].format[j]; j++) { if (screen->is_format_supported(screen, mapping[i].format[j], target, 0, bind_flags)) { num_supported++; } } if (!num_supported || (!mapping[i].need_at_least_one && num_supported != j)) { continue; } /* Enable all extensions in the list. */ for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++) extensions[mapping[i].extension_offset[j]] = GL_TRUE; } } /** * 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; int i, glsl_feature_level; GLboolean *extensions = (GLboolean *) &ctx->Extensions; static const struct st_extension_cap_mapping cap_mapping[] = { { o(ARB_base_instance), PIPE_CAP_START_INSTANCE }, { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE }, { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP }, { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC }, { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID }, { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP }, { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR }, { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY }, { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY }, { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE }, { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP }, { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT }, { o(ARB_shader_texture_lod), PIPE_CAP_SM3 }, { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP }, { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES }, { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME }, { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME }, { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE }, { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE }, { o(EXT_shadow_funcs), PIPE_CAP_TEXTURE_SHADOW_MAP }, { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL }, { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS }, { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER }, { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP }, { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE }, { o(EXT_timer_query), PIPE_CAP_TIMER_QUERY }, { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS }, { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE }, { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL }, { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP }, { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER }, { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER }, /* GL_NV_point_sprite is not supported by gallium because we don't * support the GL_POINT_SPRITE_R_MODE_NV option. */ { o(MESA_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS }, }; /* Required: render target and sampler support */ static const struct st_extension_format_mapping rendertarget_mapping[] = { { { o(ARB_texture_float) }, { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT } }, { { o(ARB_texture_rgb10_a2ui) }, { PIPE_FORMAT_B10G10R10A2_UINT } }, { { o(EXT_framebuffer_sRGB) }, { PIPE_FORMAT_A8B8G8R8_SRGB, PIPE_FORMAT_B8G8R8A8_SRGB }, GL_TRUE }, /* at least one format must be supported */ { { o(EXT_packed_float) }, { PIPE_FORMAT_R11G11B10_FLOAT } }, { { o(EXT_texture_integer) }, { PIPE_FORMAT_R32G32B32A32_UINT, PIPE_FORMAT_R32G32B32A32_SINT } }, }; /* Required: depth stencil and sampler support */ static const struct st_extension_format_mapping depthstencil_mapping[] = { { { o(ARB_depth_buffer_float) }, { PIPE_FORMAT_Z32_FLOAT, PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } }, { { o(ARB_framebuffer_object), o(EXT_packed_depth_stencil) }, { PIPE_FORMAT_S8_UINT_Z24_UNORM, PIPE_FORMAT_Z24_UNORM_S8_UINT }, GL_TRUE }, /* at least one format must be supported */ }; /* Required: sampler support */ static const struct st_extension_format_mapping texture_mapping[] = { { { o(ARB_texture_compression_rgtc) }, { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_RGTC1_SNORM, PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_RGTC2_SNORM } }, { { o(ARB_texture_rg) }, { PIPE_FORMAT_R8G8_UNORM } }, { { o(EXT_texture_compression_latc) }, { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_LATC1_SNORM, PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_LATC2_SNORM } }, { { o(EXT_texture_compression_s3tc), o(S3_s3tc) }, { PIPE_FORMAT_DXT1_RGB, PIPE_FORMAT_DXT1_RGBA, PIPE_FORMAT_DXT3_RGBA, PIPE_FORMAT_DXT5_RGBA } }, { { o(EXT_texture_shared_exponent) }, { PIPE_FORMAT_R9G9B9E5_FLOAT } }, { { o(EXT_texture_snorm) }, { PIPE_FORMAT_R8G8B8A8_SNORM } }, { { o(EXT_texture_sRGB), o(EXT_texture_sRGB_decode) }, { PIPE_FORMAT_A8B8G8R8_SRGB, PIPE_FORMAT_B8G8R8A8_SRGB }, GL_TRUE }, /* at least one format must be supported */ { { o(ATI_texture_compression_3dc) }, { PIPE_FORMAT_LATC2_UNORM } }, { { o(MESA_ycbcr_texture) }, { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV }, GL_TRUE }, /* at least one format must be supported */ { { o(OES_compressed_ETC1_RGB8_texture) }, { PIPE_FORMAT_ETC1_RGB8 } }, }; /* Required: vertex fetch support. */ static const struct st_extension_format_mapping vertex_mapping[] = { { { o(ARB_vertex_type_2_10_10_10_rev) }, { PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM, PIPE_FORMAT_R10G10B10A2_SNORM, PIPE_FORMAT_B10G10R10A2_SNORM, PIPE_FORMAT_R10G10B10A2_USCALED, PIPE_FORMAT_B10G10R10A2_USCALED, PIPE_FORMAT_R10G10B10A2_SSCALED, PIPE_FORMAT_B10G10R10A2_SSCALED } }, }; /* * Extensions that are supported by all Gallium drivers: */ ctx->Extensions.ARB_ES2_compatibility = GL_TRUE; ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE; ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE; ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; ctx->Extensions.ARB_fragment_program = GL_TRUE; ctx->Extensions.ARB_fragment_shader = GL_TRUE; ctx->Extensions.ARB_half_float_pixel = GL_TRUE; ctx->Extensions.ARB_half_float_vertex = GL_TRUE; ctx->Extensions.ARB_map_buffer_range = GL_TRUE; ctx->Extensions.ARB_shader_objects = GL_TRUE; ctx->Extensions.ARB_shading_language_100 = GL_TRUE; ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */ 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_texture_storage = GL_TRUE; ctx->Extensions.ARB_vertex_program = GL_TRUE; ctx->Extensions.ARB_vertex_shader = GL_TRUE; ctx->Extensions.EXT_blend_color = GL_TRUE; ctx->Extensions.EXT_blend_func_separate = GL_TRUE; ctx->Extensions.EXT_blend_minmax = 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_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_separate_shader_objects = GL_TRUE; ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; ctx->Extensions.EXT_vertex_array_bgra = 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_fog_distance = GL_TRUE; ctx->Extensions.NV_texgen_reflection = GL_TRUE; ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; ctx->Extensions.NV_texture_rectangle = GL_TRUE; ctx->Extensions.OES_EGL_image = GL_TRUE; if (ctx->API != API_OPENGL) ctx->Extensions.OES_EGL_image_external = GL_TRUE; ctx->Extensions.OES_draw_texture = GL_TRUE; /* Expose the extensions which directly correspond to gallium caps. */ for (i = 0; i < Elements(cap_mapping); i++) { if (screen->get_param(screen, cap_mapping[i].cap)) { extensions[cap_mapping[i].extension_offset] = GL_TRUE; } } /* Expose the extensions which directly correspond to gallium formats. */ init_format_extensions(st, rendertarget_mapping, Elements(rendertarget_mapping), PIPE_TEXTURE_2D, PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW); init_format_extensions(st, depthstencil_mapping, Elements(depthstencil_mapping), PIPE_TEXTURE_2D, PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW); init_format_extensions(st, texture_mapping, Elements(texture_mapping), PIPE_TEXTURE_2D, PIPE_BIND_SAMPLER_VIEW); init_format_extensions(st, vertex_mapping, Elements(vertex_mapping), PIPE_BUFFER, PIPE_BIND_VERTEX_BUFFER); /* Figure out GLSL support. */ glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL); if (glsl_feature_level >= 130) { ctx->Const.GLSLVersion = 130; } else { ctx->Const.GLSLVersion = 120; } _mesa_override_glsl_version(st->ctx); if (ctx->Const.GLSLVersion >= 130) { ctx->Const.NativeIntegers = GL_TRUE; ctx->Const.MaxClipPlanes = 8; /* Extensions that only depend on GLSL 1.3. */ ctx->Extensions.ARB_conservative_depth = GL_TRUE; ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE; } else { /* Optional integer support for GLSL 1.2. */ if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX, PIPE_SHADER_CAP_INTEGERS) && screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_INTEGERS)) { ctx->Const.NativeIntegers = GL_TRUE; } } /* Below are the cases which cannot be moved into tables easily. */ if (!ctx->Mesa_DXTn && !st_get_s3tc_override()) { ctx->Extensions.EXT_texture_compression_s3tc = GL_FALSE; ctx->Extensions.S3_s3tc = GL_FALSE; } 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 } ctx->Extensions.NV_primitive_restart = GL_TRUE; if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) { ctx->Const.PrimitiveRestartInSoftware = GL_TRUE; } if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) { ctx->Extensions.ARB_color_buffer_float = GL_TRUE; if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) { st->clamp_vert_color_in_shader = TRUE; } if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) { st->clamp_frag_color_in_shader = TRUE; } } if (screen->fence_finish) { ctx->Extensions.ARB_sync = GL_TRUE; } /* Maximum sample count. */ for (i = 16; i > 0; --i) { if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM, PIPE_TEXTURE_2D, i, PIPE_BIND_RENDER_TARGET)) { ctx->Const.MaxSamples = i; break; } } if (ctx->Const.MaxDualSourceDrawBuffers > 0) ctx->Extensions.ARB_blend_func_extended = GL_TRUE; if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY) && screen->get_param(screen, PIPE_CAP_QUERY_TIMESTAMP)) { ctx->Extensions.ARB_timer_query = GL_TRUE; } if (ctx->Extensions.ARB_transform_feedback2 && ctx->Extensions.ARB_draw_instanced) { ctx->Extensions.ARB_transform_feedback_instanced = GL_TRUE; } if (st->options.force_glsl_extensions_warn) ctx->Const.ForceGLSLExtensionsWarn = 1; ctx->Const.MinMapBufferAlignment = screen->get_param(screen, PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT); if (ctx->Const.MinMapBufferAlignment >= 64) { ctx->Extensions.ARB_map_buffer_alignment = GL_TRUE; } }