st_extensions.c revision d2d3cd2be78022e585b4a155d742d346471453d0
10469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy/************************************************************************** 20469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * 30469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 40469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * Copyright (c) 2008 VMware, Inc. 50469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * All Rights Reserved. 60469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * 70469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * Permission is hereby granted, free of charge, to any person obtaining a 80469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * copy of this software and associated documentation files (the 90469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * "Software"), to deal in the Software without restriction, including 100469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * without limitation the rights to use, copy, modify, merge, publish, 110469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * distribute, sub license, and/or sell copies of the Software, and to 120469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * permit persons to whom the Software is furnished to do so, subject to 130469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * the following conditions: 140469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * 150469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * The above copyright notice and this permission notice (including the 160469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * next paragraph) shall be included in all copies or substantial portions 172fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy * of the Software. 180469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * 190469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 200469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 210832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 220469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 230832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 240469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 250469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 260469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * 278e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy **************************************************************************/ 280469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy 290469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy#include "main/imports.h" 300469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy#include "main/context.h" 310469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy#include "main/macros.h" 320469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy#include "main/mfeatures.h" 330469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy#include "main/version.h" 340832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy 350832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy#include "pipe/p_context.h" 3693a826f78f6313db791e6fc880439189897651b3Siva Velusamy#include "pipe/p_defines.h" 37e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Block#include "pipe/p_screen.h" 3893a826f78f6313db791e6fc880439189897651b3Siva Velusamy 3993a826f78f6313db791e6fc880439189897651b3Siva Velusamy#include "st_context.h" 400469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy#include "st_extensions.h" 410469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy 420832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy 430469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamystatic int _min(int a, int b) 440832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy{ 450832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy return (a < b) ? a : b; 460832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy} 470832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy 480469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamystatic float _maxf(float a, float b) 490832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy{ 500832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy return (a > b) ? a : b; 510832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy} 5293a826f78f6313db791e6fc880439189897651b3Siva Velusamy 53e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Blockstatic int _clamp(int a, int min, int max) 5493a826f78f6313db791e6fc880439189897651b3Siva Velusamy{ 550469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy if (a < min) 560469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy return min; 5793a826f78f6313db791e6fc880439189897651b3Siva Velusamy else if (a > max) 5893a826f78f6313db791e6fc880439189897651b3Siva Velusamy return max; 59e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Block else 6093a826f78f6313db791e6fc880439189897651b3Siva Velusamy return a; 610469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy} 620469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy 630832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy 640469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy/** 6593a826f78f6313db791e6fc880439189897651b3Siva Velusamy * Query driver to get implementation limits. 6693a826f78f6313db791e6fc880439189897651b3Siva Velusamy * Note that we have to limit/clamp against Mesa's internal limits too. 6793a826f78f6313db791e6fc880439189897651b3Siva Velusamy */ 68e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Blockvoid st_init_limits(struct st_context *st) 6993a826f78f6313db791e6fc880439189897651b3Siva Velusamy{ 700469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy struct pipe_screen *screen = st->pipe->screen; 710469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy struct gl_constants *c = &st->ctx->Const; 728e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy gl_shader_type sh; 738e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy 748e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy c->MaxTextureLevels 758e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS), 768e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy MAX_TEXTURE_LEVELS); 778e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy 788e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy c->Max3DTextureLevels 79c7d767ad57a25eeefbbfe2610396d800f04178edSiva Velusamy = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS), 80c7d767ad57a25eeefbbfe2610396d800f04178edSiva Velusamy MAX_3D_TEXTURE_LEVELS); 81c7d767ad57a25eeefbbfe2610396d800f04178edSiva Velusamy 828e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy c->MaxCubeTextureLevels 838e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS), 848e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy MAX_CUBE_TEXTURE_LEVELS); 858e2f3858d5a06dae5a543d9428278f59120f7f8cSiva Velusamy 860832fb6407d1c85cba20a8cc0aff828db3c134deSiva Velusamy c->MaxTextureRectSize 8793a826f78f6313db791e6fc880439189897651b3Siva Velusamy = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE); 8893a826f78f6313db791e6fc880439189897651b3Siva Velusamy 8993a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxArrayTextureLayers 9093a826f78f6313db791e6fc880439189897651b3Siva Velusamy = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS); 9193a826f78f6313db791e6fc880439189897651b3Siva Velusamy 9293a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxTextureImageUnits 9393a826f78f6313db791e6fc880439189897651b3Siva Velusamy = _min(screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, 9493a826f78f6313db791e6fc880439189897651b3Siva Velusamy PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS), 9593a826f78f6313db791e6fc880439189897651b3Siva Velusamy MAX_TEXTURE_IMAGE_UNITS); 9693a826f78f6313db791e6fc880439189897651b3Siva Velusamy 970469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy c->MaxVertexTextureImageUnits 980469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy = _min(screen->get_shader_param(screen, PIPE_SHADER_VERTEX, 9993a826f78f6313db791e6fc880439189897651b3Siva Velusamy PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS), 10093a826f78f6313db791e6fc880439189897651b3Siva Velusamy MAX_VERTEX_TEXTURE_IMAGE_UNITS); 10193a826f78f6313db791e6fc880439189897651b3Siva Velusamy 10293a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxCombinedTextureImageUnits 10393a826f78f6313db791e6fc880439189897651b3Siva Velusamy = _min(screen->get_param(screen, PIPE_CAP_MAX_COMBINED_SAMPLERS), 10493a826f78f6313db791e6fc880439189897651b3Siva Velusamy MAX_COMBINED_TEXTURE_IMAGE_UNITS); 10593a826f78f6313db791e6fc880439189897651b3Siva Velusamy 10693a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxTextureCoordUnits 1070469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy = _min(c->MaxTextureImageUnits, MAX_TEXTURE_COORD_UNITS); 1080469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy 1090469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy c->MaxTextureUnits = _min(c->MaxTextureImageUnits, c->MaxTextureCoordUnits); 11093a826f78f6313db791e6fc880439189897651b3Siva Velusamy 11193a826f78f6313db791e6fc880439189897651b3Siva Velusamy /* Define max viewport size and max renderbuffer size in terms of 11293a826f78f6313db791e6fc880439189897651b3Siva Velusamy * max texture size (note: max tex RECT size = max tex 2D size). 1130469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy * If this isn't true for some hardware we'll need new PIPE_CAP_ queries. 1140469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy */ 11593a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxViewportWidth = 11693a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxViewportHeight = 11793a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxRenderbufferSize = c->MaxTextureRectSize; 11893a826f78f6313db791e6fc880439189897651b3Siva Velusamy 11993a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxDrawBuffers 12093a826f78f6313db791e6fc880439189897651b3Siva Velusamy = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 1210469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy 1, MAX_DRAW_BUFFERS); 12293a826f78f6313db791e6fc880439189897651b3Siva Velusamy 12393a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxDualSourceDrawBuffers 12493a826f78f6313db791e6fc880439189897651b3Siva Velusamy = _clamp(screen->get_param(screen, PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS), 1250469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy 0, MAX_DRAW_BUFFERS); 1260469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy 1272fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy c->MaxLineWidth 1282fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy = _maxf(1.0f, screen->get_paramf(screen, 1292fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy PIPE_CAPF_MAX_LINE_WIDTH)); 1302fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy c->MaxLineWidthAA 1312fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy = _maxf(1.0f, screen->get_paramf(screen, 1322fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy PIPE_CAPF_MAX_LINE_WIDTH_AA)); 1332fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy 1342fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy c->MaxPointSize 1352fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy = _maxf(1.0f, screen->get_paramf(screen, 1362fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy PIPE_CAPF_MAX_POINT_WIDTH)); 1372fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy c->MaxPointSizeAA 1382fdcc81ddfdbdfbbde63bd64e9ac9272b5417553Siva Velusamy = _maxf(1.0f, screen->get_paramf(screen, 13993a826f78f6313db791e6fc880439189897651b3Siva Velusamy PIPE_CAPF_MAX_POINT_WIDTH_AA)); 14093a826f78f6313db791e6fc880439189897651b3Siva Velusamy /* called after _mesa_create_context/_mesa_init_point, fix default user 14193a826f78f6313db791e6fc880439189897651b3Siva Velusamy * settable max point size up 14293a826f78f6313db791e6fc880439189897651b3Siva Velusamy */ 14393a826f78f6313db791e6fc880439189897651b3Siva Velusamy st->ctx->Point.MaxSize = MAX2(c->MaxPointSize, c->MaxPointSizeAA); 14493a826f78f6313db791e6fc880439189897651b3Siva Velusamy /* these are not queryable. Note that GL basically mandates a 1.0 minimum 14593a826f78f6313db791e6fc880439189897651b3Siva Velusamy * for non-aa sizes, but we can go down to 0.0 for aa points. 14693a826f78f6313db791e6fc880439189897651b3Siva Velusamy */ 14793a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MinPointSize = 1.0f; 14893a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MinPointSizeAA = 0.0f; 14993a826f78f6313db791e6fc880439189897651b3Siva Velusamy 15093a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxTextureMaxAnisotropy 15193a826f78f6313db791e6fc880439189897651b3Siva Velusamy = _maxf(2.0f, screen->get_paramf(screen, 15293a826f78f6313db791e6fc880439189897651b3Siva Velusamy PIPE_CAPF_MAX_TEXTURE_ANISOTROPY)); 15393a826f78f6313db791e6fc880439189897651b3Siva Velusamy 15493a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxTextureLodBias 15593a826f78f6313db791e6fc880439189897651b3Siva Velusamy = screen->get_paramf(screen, PIPE_CAPF_MAX_TEXTURE_LOD_BIAS); 15693a826f78f6313db791e6fc880439189897651b3Siva Velusamy 15793a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->MaxDrawBuffers 15893a826f78f6313db791e6fc880439189897651b3Siva Velusamy = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 15993a826f78f6313db791e6fc880439189897651b3Siva Velusamy 1, MAX_DRAW_BUFFERS); 16093a826f78f6313db791e6fc880439189897651b3Siva Velusamy 16193a826f78f6313db791e6fc880439189897651b3Siva Velusamy c->QuadsFollowProvokingVertexConvention = screen->get_param( 16293a826f78f6313db791e6fc880439189897651b3Siva Velusamy screen, PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION); 16393a826f78f6313db791e6fc880439189897651b3Siva Velusamy 16493a826f78f6313db791e6fc880439189897651b3Siva Velusamy for (sh = 0; sh < MESA_SHADER_TYPES; ++sh) { 16593a826f78f6313db791e6fc880439189897651b3Siva Velusamy struct gl_shader_compiler_options *options = 16693a826f78f6313db791e6fc880439189897651b3Siva Velusamy &st->ctx->ShaderCompilerOptions[sh]; 16793a826f78f6313db791e6fc880439189897651b3Siva Velusamy struct gl_program_constants *pc; 16893a826f78f6313db791e6fc880439189897651b3Siva Velusamy 16993a826f78f6313db791e6fc880439189897651b3Siva Velusamy switch (sh) { 17093a826f78f6313db791e6fc880439189897651b3Siva Velusamy case PIPE_SHADER_FRAGMENT: 1710469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy pc = &c->FragmentProgram; 17293a826f78f6313db791e6fc880439189897651b3Siva Velusamy break; 17393a826f78f6313db791e6fc880439189897651b3Siva Velusamy case PIPE_SHADER_VERTEX: 1740469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy pc = &c->VertexProgram; 1750469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy break; 1760469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy case PIPE_SHADER_GEOMETRY: 1770469dd6d55fa331bfd7de9431da98b6340d82271Siva Velusamy pc = &c->GeometryProgram; 178 break; 179 default: 180 assert(0); 181 continue; 182 } 183 184 pc->MaxNativeInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS); 185 pc->MaxNativeAluInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS); 186 pc->MaxNativeTexInstructions = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS); 187 pc->MaxNativeTexIndirections = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS); 188 pc->MaxNativeAttribs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INPUTS); 189 pc->MaxNativeTemps = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS); 190 pc->MaxNativeAddressRegs = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS); 191 pc->MaxNativeParameters = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS); 192 pc->MaxUniformComponents = 4 * MIN2(pc->MaxNativeParameters, MAX_UNIFORMS); 193 /* raise MaxParameters if native support is higher */ 194 pc->MaxParameters = MAX2(pc->MaxParameters, pc->MaxNativeParameters); 195 196 /* Gallium doesn't really care about local vs. env parameters so use the 197 * same limits. 198 */ 199 pc->MaxLocalParams = MIN2(pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS); 200 pc->MaxEnvParams = MIN2(pc->MaxParameters, MAX_PROGRAM_ENV_PARAMS); 201 202 options->EmitNoNoise = TRUE; 203 204 /* TODO: make these more fine-grained if anyone needs it */ 205 options->MaxIfDepth = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH); 206 options->EmitNoLoops = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH); 207 options->EmitNoFunctions = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES); 208 options->EmitNoMainReturn = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_SUBROUTINES); 209 210 options->EmitNoCont = !screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED); 211 212 options->EmitNoIndirectInput = !screen->get_shader_param(screen, sh, 213 PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR); 214 options->EmitNoIndirectOutput = !screen->get_shader_param(screen, sh, 215 PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR); 216 options->EmitNoIndirectTemp = !screen->get_shader_param(screen, sh, 217 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR); 218 options->EmitNoIndirectUniform = !screen->get_shader_param(screen, sh, 219 PIPE_SHADER_CAP_INDIRECT_CONST_ADDR); 220 221 if (options->EmitNoLoops) 222 options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536); 223 else 224 options->MaxUnrollIterations = 255; /* SM3 limit */ 225 options->LowerClipDistance = true; 226 } 227 228 /* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number 229 * of inputs. It's always 2 colors + N generic inputs. */ 230 c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, 231 PIPE_SHADER_CAP_MAX_INPUTS); 232 c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING); 233 234 c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET); 235 c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET); 236 237 c->UniformBooleanTrue = ~0; 238 239 c->MaxTransformFeedbackBuffers = 240 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS); 241 c->MaxTransformFeedbackBuffers = MIN2(c->MaxTransformFeedbackBuffers, MAX_FEEDBACK_BUFFERS); 242 c->MaxTransformFeedbackSeparateComponents = 243 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS); 244 c->MaxTransformFeedbackInterleavedComponents = 245 screen->get_param(screen, PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS); 246 247 c->StripTextureBorder = GL_TRUE; 248 249 c->GLSLSkipStrictMaxUniformLimitCheck = 250 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS); 251 252 c->GLSLSkipStrictMaxVaryingLimitCheck = 253 screen->get_param(screen, PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS); 254} 255 256 257static GLboolean st_get_s3tc_override(void) 258{ 259 const char *override = _mesa_getenv("force_s3tc_enable"); 260 if (override && !strcmp(override, "true")) 261 return GL_TRUE; 262 return GL_FALSE; 263} 264 265/** 266 * Given a member \c x of struct gl_extensions, return offset of 267 * \c x in bytes. 268 */ 269#define o(x) offsetof(struct gl_extensions, x) 270 271 272struct st_extension_cap_mapping { 273 int extension_offset; 274 int cap; 275}; 276 277struct st_extension_format_mapping { 278 int extension_offset[2]; 279 enum pipe_format format[8]; 280 281 /* If TRUE, at least one format must be supported for the extensions to be 282 * advertised. If FALSE, all the formats must be supported. */ 283 GLboolean need_at_least_one; 284}; 285 286/** 287 * Enable extensions if certain pipe formats are supported by the driver. 288 * What extensions will be enabled and what formats must be supported is 289 * described by the array of st_extension_format_mapping. 290 * 291 * target and bind_flags are passed to is_format_supported. 292 */ 293static void init_format_extensions(struct st_context *st, 294 const struct st_extension_format_mapping *mapping, 295 unsigned num_mappings, 296 enum pipe_texture_target target, 297 unsigned bind_flags) 298{ 299 struct pipe_screen *screen = st->pipe->screen; 300 GLboolean *extensions = (GLboolean *) &st->ctx->Extensions; 301 int i, j; 302 int num_formats = Elements(mapping->format); 303 int num_ext = Elements(mapping->extension_offset); 304 305 for (i = 0; i < num_mappings; i++) { 306 int num_supported = 0; 307 308 /* Examine each format in the list. */ 309 for (j = 0; j < num_formats && mapping[i].format[j]; j++) { 310 if (screen->is_format_supported(screen, mapping[i].format[j], 311 target, 0, bind_flags)) { 312 num_supported++; 313 } 314 } 315 316 if (!num_supported || 317 (!mapping[i].need_at_least_one && num_supported != j)) { 318 continue; 319 } 320 321 /* Enable all extensions in the list. */ 322 for (j = 0; j < num_ext && mapping[i].extension_offset[j]; j++) 323 extensions[mapping[i].extension_offset[j]] = GL_TRUE; 324 } 325} 326 327/** 328 * Use pipe_screen::get_param() to query PIPE_CAP_ values to determine 329 * which GL extensions are supported. 330 * Quite a few extensions are always supported because they are standard 331 * features or can be built on top of other gallium features. 332 * Some fine tuning may still be needed. 333 */ 334void st_init_extensions(struct st_context *st) 335{ 336 struct pipe_screen *screen = st->pipe->screen; 337 struct gl_context *ctx = st->ctx; 338 int i, glsl_feature_level; 339 GLboolean *extensions = (GLboolean *) &ctx->Extensions; 340 341 static const struct st_extension_cap_mapping cap_mapping[] = { 342 { o(ARB_base_instance), PIPE_CAP_START_INSTANCE }, 343 { o(ARB_depth_clamp), PIPE_CAP_DEPTH_CLIP_DISABLE }, 344 { o(ARB_depth_texture), PIPE_CAP_TEXTURE_SHADOW_MAP }, 345 { o(ARB_draw_buffers_blend), PIPE_CAP_INDEP_BLEND_FUNC }, 346 { o(ARB_draw_instanced), PIPE_CAP_TGSI_INSTANCEID }, 347 { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP }, 348 { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR }, 349 { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY }, 350 { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY }, 351 { o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE }, 352 { o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP }, 353 { o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT }, 354 { o(ARB_shader_texture_lod), PIPE_CAP_SM3 }, 355 { o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP }, 356 { o(ARB_texture_non_power_of_two), PIPE_CAP_NPOT_TEXTURES }, 357 { o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME }, 358 { o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME }, 359 360 { o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE }, 361 { o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE }, 362 { o(EXT_shadow_funcs), PIPE_CAP_TEXTURE_SHADOW_MAP }, 363 { o(EXT_stencil_two_side), PIPE_CAP_TWO_SIDED_STENCIL }, 364 { o(EXT_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS }, 365 { o(EXT_texture_filter_anisotropic), PIPE_CAP_ANISOTROPIC_FILTER }, 366 { o(EXT_texture_mirror_clamp), PIPE_CAP_TEXTURE_MIRROR_CLAMP }, 367 { o(EXT_texture_swizzle), PIPE_CAP_TEXTURE_SWIZZLE }, 368 { o(EXT_timer_query), PIPE_CAP_TIMER_QUERY }, 369 { o(EXT_transform_feedback), PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS }, 370 371 { o(AMD_seamless_cubemap_per_texture), PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE }, 372 { o(ATI_separate_stencil), PIPE_CAP_TWO_SIDED_STENCIL }, 373 { o(ATI_texture_mirror_once), PIPE_CAP_TEXTURE_MIRROR_CLAMP }, 374 { o(NV_conditional_render), PIPE_CAP_CONDITIONAL_RENDER }, 375 { o(NV_texture_barrier), PIPE_CAP_TEXTURE_BARRIER }, 376 /* GL_NV_point_sprite is not supported by gallium because we don't 377 * support the GL_POINT_SPRITE_R_MODE_NV option. */ 378 { o(MESA_texture_array), PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS }, 379 }; 380 381 /* Required: render target and sampler support */ 382 static const struct st_extension_format_mapping rendertarget_mapping[] = { 383 { { o(ARB_texture_float) }, 384 { PIPE_FORMAT_R32G32B32A32_FLOAT, 385 PIPE_FORMAT_R16G16B16A16_FLOAT } }, 386 387 { { o(ARB_texture_rgb10_a2ui) }, 388 { PIPE_FORMAT_B10G10R10A2_UINT } }, 389 390 { { o(EXT_framebuffer_sRGB) }, 391 { PIPE_FORMAT_A8B8G8R8_SRGB, 392 PIPE_FORMAT_B8G8R8A8_SRGB }, 393 GL_TRUE }, /* at least one format must be supported */ 394 395 { { o(EXT_packed_float) }, 396 { PIPE_FORMAT_R11G11B10_FLOAT } }, 397 398 { { o(EXT_texture_integer) }, 399 { PIPE_FORMAT_R32G32B32A32_UINT, 400 PIPE_FORMAT_R32G32B32A32_SINT } }, 401 }; 402 403 /* Required: depth stencil and sampler support */ 404 static const struct st_extension_format_mapping depthstencil_mapping[] = { 405 { { o(ARB_depth_buffer_float) }, 406 { PIPE_FORMAT_Z32_FLOAT, 407 PIPE_FORMAT_Z32_FLOAT_S8X24_UINT } }, 408 409 { { o(ARB_framebuffer_object), 410 o(EXT_packed_depth_stencil) }, 411 { PIPE_FORMAT_S8_UINT_Z24_UNORM, 412 PIPE_FORMAT_Z24_UNORM_S8_UINT }, 413 GL_TRUE }, /* at least one format must be supported */ 414 }; 415 416 /* Required: sampler support */ 417 static const struct st_extension_format_mapping texture_mapping[] = { 418 { { o(ARB_texture_compression_rgtc) }, 419 { PIPE_FORMAT_RGTC1_UNORM, 420 PIPE_FORMAT_RGTC1_SNORM, 421 PIPE_FORMAT_RGTC2_UNORM, 422 PIPE_FORMAT_RGTC2_SNORM } }, 423 424 { { o(ARB_texture_rg) }, 425 { PIPE_FORMAT_R8G8_UNORM } }, 426 427 { { o(EXT_texture_compression_latc) }, 428 { PIPE_FORMAT_LATC1_UNORM, 429 PIPE_FORMAT_LATC1_SNORM, 430 PIPE_FORMAT_LATC2_UNORM, 431 PIPE_FORMAT_LATC2_SNORM } }, 432 433 { { o(EXT_texture_compression_s3tc), 434 o(S3_s3tc) }, 435 { PIPE_FORMAT_DXT1_RGB, 436 PIPE_FORMAT_DXT1_RGBA, 437 PIPE_FORMAT_DXT3_RGBA, 438 PIPE_FORMAT_DXT5_RGBA } }, 439 440 { { o(EXT_texture_shared_exponent) }, 441 { PIPE_FORMAT_R9G9B9E5_FLOAT } }, 442 443 { { o(EXT_texture_snorm) }, 444 { PIPE_FORMAT_R8G8B8A8_SNORM } }, 445 446 { { o(EXT_texture_sRGB), 447 o(EXT_texture_sRGB_decode) }, 448 { PIPE_FORMAT_A8B8G8R8_SRGB, 449 PIPE_FORMAT_B8G8R8A8_SRGB }, 450 GL_TRUE }, /* at least one format must be supported */ 451 452 { { o(ATI_texture_compression_3dc) }, 453 { PIPE_FORMAT_LATC2_UNORM } }, 454 455 { { o(MESA_ycbcr_texture) }, 456 { PIPE_FORMAT_UYVY, 457 PIPE_FORMAT_YUYV }, 458 GL_TRUE }, /* at least one format must be supported */ 459 460 { { o(OES_compressed_ETC1_RGB8_texture) }, 461 { PIPE_FORMAT_ETC1_RGB8 } }, 462 }; 463 464 /* Required: vertex fetch support. */ 465 static const struct st_extension_format_mapping vertex_mapping[] = { 466 { { o(ARB_vertex_type_2_10_10_10_rev) }, 467 { PIPE_FORMAT_R10G10B10A2_UNORM, 468 PIPE_FORMAT_B10G10R10A2_UNORM, 469 PIPE_FORMAT_R10G10B10A2_SNORM, 470 PIPE_FORMAT_B10G10R10A2_SNORM, 471 PIPE_FORMAT_R10G10B10A2_USCALED, 472 PIPE_FORMAT_B10G10R10A2_USCALED, 473 PIPE_FORMAT_R10G10B10A2_SSCALED, 474 PIPE_FORMAT_B10G10R10A2_SSCALED } }, 475 }; 476 477 /* 478 * Extensions that are supported by all Gallium drivers: 479 */ 480 ctx->Extensions.ARB_ES2_compatibility = GL_TRUE; 481 ctx->Extensions.ARB_copy_buffer = GL_TRUE; 482 ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE; 483 ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE; 484 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; 485 ctx->Extensions.ARB_fragment_program = GL_TRUE; 486 ctx->Extensions.ARB_fragment_shader = GL_TRUE; 487 ctx->Extensions.ARB_half_float_pixel = GL_TRUE; 488 ctx->Extensions.ARB_half_float_vertex = GL_TRUE; 489 ctx->Extensions.ARB_map_buffer_range = GL_TRUE; 490 ctx->Extensions.ARB_shader_objects = GL_TRUE; 491 ctx->Extensions.ARB_shading_language_100 = GL_TRUE; 492 ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */ 493 ctx->Extensions.ARB_texture_cube_map = GL_TRUE; 494 ctx->Extensions.ARB_texture_env_combine = GL_TRUE; 495 ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; 496 ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; 497 ctx->Extensions.ARB_texture_storage = GL_TRUE; 498 ctx->Extensions.ARB_vertex_program = GL_TRUE; 499 ctx->Extensions.ARB_vertex_shader = GL_TRUE; 500 ctx->Extensions.ARB_window_pos = GL_TRUE; 501 502 ctx->Extensions.EXT_blend_color = GL_TRUE; 503 ctx->Extensions.EXT_blend_func_separate = GL_TRUE; 504 ctx->Extensions.EXT_blend_minmax = GL_TRUE; 505 ctx->Extensions.EXT_framebuffer_blit = GL_TRUE; 506 ctx->Extensions.EXT_framebuffer_object = GL_TRUE; 507 ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE; 508 ctx->Extensions.EXT_fog_coord = GL_TRUE; 509 ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE; 510 ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; 511 ctx->Extensions.EXT_point_parameters = GL_TRUE; 512 ctx->Extensions.EXT_provoking_vertex = GL_TRUE; 513 ctx->Extensions.EXT_secondary_color = GL_TRUE; 514 ctx->Extensions.EXT_separate_shader_objects = GL_TRUE; 515 ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; 516 ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE; 517 518 ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; 519 520 ctx->Extensions.MESA_pack_invert = GL_TRUE; 521 522 ctx->Extensions.NV_blend_square = GL_TRUE; 523 ctx->Extensions.NV_fog_distance = GL_TRUE; 524 ctx->Extensions.NV_texgen_reflection = GL_TRUE; 525 ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; 526 ctx->Extensions.NV_texture_rectangle = GL_TRUE; 527#if 0 528 /* possibly could support the following two */ 529 ctx->Extensions.NV_vertex_program = GL_TRUE; 530 ctx->Extensions.NV_vertex_program1_1 = GL_TRUE; 531#endif 532 533#if FEATURE_OES_EGL_image 534 ctx->Extensions.OES_EGL_image = GL_TRUE; 535 if (ctx->API != API_OPENGL) 536 ctx->Extensions.OES_EGL_image_external = GL_TRUE; 537#endif 538#if FEATURE_OES_draw_texture 539 ctx->Extensions.OES_draw_texture = GL_TRUE; 540#endif 541 542 /* Expose the extensions which directly correspond to gallium caps. */ 543 for (i = 0; i < Elements(cap_mapping); i++) { 544 if (screen->get_param(screen, cap_mapping[i].cap)) { 545 extensions[cap_mapping[i].extension_offset] = GL_TRUE; 546 } 547 } 548 549 /* Expose the extensions which directly correspond to gallium formats. */ 550 init_format_extensions(st, rendertarget_mapping, 551 Elements(rendertarget_mapping), PIPE_TEXTURE_2D, 552 PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW); 553 init_format_extensions(st, depthstencil_mapping, 554 Elements(depthstencil_mapping), PIPE_TEXTURE_2D, 555 PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_SAMPLER_VIEW); 556 init_format_extensions(st, texture_mapping, Elements(texture_mapping), 557 PIPE_TEXTURE_2D, PIPE_BIND_SAMPLER_VIEW); 558 init_format_extensions(st, vertex_mapping, Elements(vertex_mapping), 559 PIPE_BUFFER, PIPE_BIND_VERTEX_BUFFER); 560 561 /* Figure out GLSL support. */ 562 glsl_feature_level = screen->get_param(screen, PIPE_CAP_GLSL_FEATURE_LEVEL); 563 564 if (glsl_feature_level >= 130) { 565 ctx->Const.GLSLVersion = 130; 566 } else { 567 ctx->Const.GLSLVersion = 120; 568 } 569 570 _mesa_override_glsl_version(st->ctx); 571 572 if (ctx->Const.GLSLVersion >= 130) { 573 ctx->Const.NativeIntegers = GL_TRUE; 574 ctx->Const.MaxClipPlanes = 8; 575 576 /* Extensions that only depend on GLSL 1.3. */ 577 ctx->Extensions.ARB_conservative_depth = GL_TRUE; 578 ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE; 579 } else { 580 /* Optional integer support for GLSL 1.2. */ 581 if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX, 582 PIPE_SHADER_CAP_INTEGERS) && 583 screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, 584 PIPE_SHADER_CAP_INTEGERS)) { 585 ctx->Const.NativeIntegers = GL_TRUE; 586 } 587 } 588 589 /* Below are the cases which cannot be moved into tables easily. */ 590 591 if (!ctx->Mesa_DXTn && !st_get_s3tc_override()) { 592 ctx->Extensions.EXT_texture_compression_s3tc = GL_FALSE; 593 ctx->Extensions.S3_s3tc = GL_FALSE; 594 } 595 596 if (screen->get_shader_param(screen, PIPE_SHADER_GEOMETRY, 597 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) { 598#if 0 /* XXX re-enable when GLSL compiler again supports geometry shaders */ 599 ctx->Extensions.ARB_geometry_shader4 = GL_TRUE; 600#endif 601 } 602 603 ctx->Extensions.NV_primitive_restart = GL_TRUE; 604 if (!screen->get_param(screen, PIPE_CAP_PRIMITIVE_RESTART)) { 605 ctx->Const.PrimitiveRestartInSoftware = GL_TRUE; 606 } 607 608 if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) { 609 ctx->Extensions.ARB_color_buffer_float = GL_TRUE; 610 611 if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) { 612 st->clamp_vert_color_in_shader = TRUE; 613 } 614 615 if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) { 616 st->clamp_frag_color_in_shader = TRUE; 617 } 618 } 619 620 if (screen->fence_finish) { 621 ctx->Extensions.ARB_sync = GL_TRUE; 622 } 623 624 /* Maximum sample count. */ 625 for (i = 16; i > 0; --i) { 626 if (screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_UNORM, 627 PIPE_TEXTURE_2D, i, 628 PIPE_BIND_RENDER_TARGET)) { 629 ctx->Const.MaxSamples = i; 630 break; 631 } 632 } 633 if (ctx->Const.MaxSamples == 1) { 634 /* one sample doesn't really make sense */ 635 ctx->Const.MaxSamples = 0; 636 } 637 638 if (ctx->Const.MaxDualSourceDrawBuffers > 0) 639 ctx->Extensions.ARB_blend_func_extended = GL_TRUE; 640 641 if (screen->get_param(screen, PIPE_CAP_TIMER_QUERY) && 642 screen->get_param(screen, PIPE_CAP_QUERY_TIMESTAMP)) { 643 ctx->Extensions.ARB_timer_query = GL_TRUE; 644 } 645 646 if (ctx->Extensions.ARB_transform_feedback2 && 647 ctx->Extensions.ARB_draw_instanced) { 648 ctx->Extensions.ARB_transform_feedback_instanced = GL_TRUE; 649 } 650 if (st->options.force_glsl_extensions_warn) 651 ctx->Const.ForceGLSLExtensionsWarn = 1; 652} 653