s_fragprog.c revision 1c0f1dd42a50464eeb81de4aad8eecf24b3d6c89
1865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/* 2865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Mesa 3-D graphics library 3827e72de7537e62cac9652f8b7344ff356de9bb1Brian * Version: 7.0.3 4865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * 5827e72de7537e62cac9652f8b7344ff356de9bb1Brian * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 6865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * 7865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Permission is hereby granted, free of charge, to any person obtaining a 8865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * copy of this software and associated documentation files (the "Software"), 9865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * to deal in the Software without restriction, including without limitation 10865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * and/or sell copies of the Software, and to permit persons to whom the 12865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Software is furnished to do so, subject to the following conditions: 13865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * 14865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * The above copyright notice and this permission notice shall be included 15865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * in all copies or substantial portions of the Software. 16865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * 17865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 24865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 25c223c6b663cd5db39ba19c2be74b88cc3b8f53f3Brian#include "main/glheader.h" 26c223c6b663cd5db39ba19c2be74b88cc3b8f53f3Brian#include "main/colormac.h" 27ec2b92f98c2e7f161521b447cc1d9a36bce3707cBrian Paul#include "program/prog_instruction.h" 28865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 29f009f177fdb891529a4281b2d28f9eb76a365bedVinson Lee#include "s_context.h" 30c968d3d410a1897ecbb41d3557adaef69a4c627aBrian#include "s_fragprog.h" 31865f88afc0d59d886fb2ad50429e584ecf17fa81Brian#include "s_span.h" 32865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 331c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace/** 341c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace * \brief Should swrast use a fragment program? 351c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace * 361c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace * \return true if the current fragment program exists and is not the fixed 371c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace * function fragment program 381c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace */ 391c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad VersaceGLboolean 401c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace_swrast_use_fragment_program(struct gl_context *ctx) 411c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace{ 421c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace struct gl_fragment_program *fp = ctx->FragmentProgram._Current; 431c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace return fp && fp != ctx->FragmentProgram._TexEnvProgram; 441c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace} 45865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 46865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 4754c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul * Apply texture object's swizzle (X/Y/Z/W/0/1) to incoming 'texel' 4854c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul * and return results in 'colorOut'. 4954c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul */ 509520f483b8f1e45fa474674b415554988de5d8d3Brian Paulstatic inline void 51de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paulswizzle_texel(const GLfloat texel[4], GLfloat colorOut[4], GLuint swizzle) 5254c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul{ 5354c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul if (swizzle == SWIZZLE_NOOP) { 54de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paul COPY_4V(colorOut, texel); 5554c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul } 5654c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul else { 5754c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul GLfloat vector[6]; 58de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paul vector[SWIZZLE_X] = texel[0]; 59de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paul vector[SWIZZLE_Y] = texel[1]; 60de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paul vector[SWIZZLE_Z] = texel[2]; 61de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paul vector[SWIZZLE_W] = texel[3]; 6254c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul vector[SWIZZLE_ZERO] = 0.0F; 6354c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul vector[SWIZZLE_ONE] = 1.0F; 6454c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul colorOut[0] = vector[GET_SWZ(swizzle, 0)]; 6554c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul colorOut[1] = vector[GET_SWZ(swizzle, 1)]; 6654c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul colorOut[2] = vector[GET_SWZ(swizzle, 2)]; 6754c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul colorOut[3] = vector[GET_SWZ(swizzle, 3)]; 6854c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul } 6954c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul} 7054c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul 7154c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul 7254c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul/** 73ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul * Fetch a texel with given lod. 74ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul * Called via machine->FetchTexelLod() 75865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 76865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 77f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergfetch_texel_lod( struct gl_context *ctx, const GLfloat texcoord[4], GLfloat lambda, 78ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul GLuint unit, GLfloat color[4] ) 79865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 80827e72de7537e62cac9652f8b7344ff356de9bb1Brian const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; 81865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 82be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul if (texObj) { 83be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul SWcontext *swrast = SWRAST_CONTEXT(ctx); 84de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paul GLfloat rgba[4]; 85be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul 86ecfaab88b2577bd0395bc05d75a036126806a9c4Brian Paul lambda = CLAMP(lambda, texObj->Sampler.MinLod, texObj->Sampler.MaxLod); 87ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul 88be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul swrast->TextureSample[unit](ctx, texObj, 1, 89be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul (const GLfloat (*)[4]) texcoord, 90be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul &lambda, &rgba); 9154c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul swizzle_texel(rgba, color, texObj->_Swizzle); 92be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 93be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul else { 9488f3656ea7ae57d22141225db0c5d90ceab420ddBrian Paul ASSIGN_4V(color, 0.0F, 0.0F, 0.0F, 1.0F); 95be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 96865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 97865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 98865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 99865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 100865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Fetch a texel with the given partial derivatives to compute a level 101865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * of detail in the mipmap. 102ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul * Called via machine->FetchTexelDeriv() 1032acd5de22651a3461c0576107c8e8fab1f01469aBrian Paul * \param lodBias the lod bias which may be specified by a TXB instruction, 1042acd5de22651a3461c0576107c8e8fab1f01469aBrian Paul * otherwise zero. 105865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 106865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 107f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergfetch_texel_deriv( struct gl_context *ctx, const GLfloat texcoord[4], 108865f88afc0d59d886fb2ad50429e584ecf17fa81Brian const GLfloat texdx[4], const GLfloat texdy[4], 109999b55663a09d9669a9d14c5aadfa84e6dcba288Brian GLfloat lodBias, GLuint unit, GLfloat color[4] ) 110865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 111865f88afc0d59d886fb2ad50429e584ecf17fa81Brian SWcontext *swrast = SWRAST_CONTEXT(ctx); 1122acd5de22651a3461c0576107c8e8fab1f01469aBrian Paul const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 1132acd5de22651a3461c0576107c8e8fab1f01469aBrian Paul const struct gl_texture_object *texObj = texUnit->_Current; 114865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 115c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul if (texObj) { 116be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul const struct gl_texture_image *texImg = 117be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul texObj->Image[0][texObj->BaseLevel]; 118980f6f1b37ca88529b3e000235156eab93254facBrian Paul const struct swrast_texture_image *swImg = 119980f6f1b37ca88529b3e000235156eab93254facBrian Paul swrast_texture_image_const(texImg); 120980f6f1b37ca88529b3e000235156eab93254facBrian Paul const GLfloat texW = (GLfloat) swImg->WidthScale; 121980f6f1b37ca88529b3e000235156eab93254facBrian Paul const GLfloat texH = (GLfloat) swImg->HeightScale; 122be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul GLfloat lambda; 123de2afd8688ceb45013d15be7c6e0995199b80e5aBrian Paul GLfloat rgba[4]; 124865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 125c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul lambda = _swrast_compute_lambda(texdx[0], texdy[0], /* ds/dx, ds/dy */ 126c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul texdx[1], texdy[1], /* dt/dx, dt/dy */ 127ad935c3f4708417641dd3c257912ccce11485accBrian Paul texdx[3], texdy[3], /* dq/dx, dq/dy */ 128c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul texW, texH, 129c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul texcoord[0], texcoord[1], texcoord[3], 1302acd5de22651a3461c0576107c8e8fab1f01469aBrian Paul 1.0F / texcoord[3]); 1312acd5de22651a3461c0576107c8e8fab1f01469aBrian Paul 132ecfaab88b2577bd0395bc05d75a036126806a9c4Brian Paul lambda += lodBias + texUnit->LodBias + texObj->Sampler.LodBias; 133c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul 134ecfaab88b2577bd0395bc05d75a036126806a9c4Brian Paul lambda = CLAMP(lambda, texObj->Sampler.MinLod, texObj->Sampler.MaxLod); 135999b55663a09d9669a9d14c5aadfa84e6dcba288Brian 136be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul swrast->TextureSample[unit](ctx, texObj, 1, 137be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul (const GLfloat (*)[4]) texcoord, 138be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul &lambda, &rgba); 13954c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul swizzle_texel(rgba, color, texObj->_Swizzle); 140be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 141be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul else { 14288f3656ea7ae57d22141225db0c5d90ceab420ddBrian Paul ASSIGN_4V(color, 0.0F, 0.0F, 0.0F, 1.0F); 143be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 144865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 145865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 146865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 147865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 148865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Initialize the virtual fragment program machine state prior to running 149865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * fragment program on a fragment. This involves initializing the input 150865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * registers, condition codes, etc. 151865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param machine the virtual machine state to init 152865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param program the fragment program we're about to run 153865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param span the span of pixels we'll operate on 154865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param col which element (column) of the span we'll operate on 155865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 156865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 157f9995b30756140724f41daf963fa06167912be7fKristian Høgsberginit_machine(struct gl_context *ctx, struct gl_program_machine *machine, 158f6803de7396edda2223adf7ff7445579dbe475c9Brian const struct gl_fragment_program *program, 159f6803de7396edda2223adf7ff7445579dbe475c9Brian const SWspan *span, GLuint col) 160865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 16111c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt GLfloat *wpos = span->array->attribs[FRAG_ATTRIB_WPOS][col]; 16211c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt 163ced6f76404ff1a6713c85edff17551f82c33cc24Brian if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) { 164865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* Clear temporary registers (undefined for ARB_f_p) */ 1656bf1ea897fa470af58fe8916dff45e2da79634a3Brian Paul memset(machine->Temporaries, 0, MAX_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); 166865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 167865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 16811c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt /* ARB_fragment_coord_conventions */ 16911c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt if (program->OriginUpperLeft) 17011c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt wpos[1] = ctx->DrawBuffer->Height - 1 - wpos[1]; 17111c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt if (!program->PixelCenterInteger) { 172880411c72aee7c0ec81366bdf6ab8cf25bebb9d5Brian Paul wpos[0] += 0.5F; 173880411c72aee7c0ec81366bdf6ab8cf25bebb9d5Brian Paul wpos[1] += 0.5F; 17411c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt } 17511c581c6ce0b09dc4203a7f93ebb8f76357f19beEric Anholt 176f3e507ef9f75dbfc58ccd07b5fe8cfca10d9a9e3Brian /* Setup pointer to input attributes */ 177f3e507ef9f75dbfc58ccd07b5fe8cfca10d9a9e3Brian machine->Attribs = span->array->attribs; 17810b5895597d5e069183cb647d17eb412effceb4fBrian 17960d136f63c5a5a18b12952ec8e8532cbce086a4dBrian machine->DerivX = (GLfloat (*)[4]) span->attrStepX; 18060d136f63c5a5a18b12952ec8e8532cbce086a4dBrian machine->DerivY = (GLfloat (*)[4]) span->attrStepY; 18160d136f63c5a5a18b12952ec8e8532cbce086a4dBrian machine->NumDeriv = FRAG_ATTRIB_MAX; 18260d136f63c5a5a18b12952ec8e8532cbce086a4dBrian 183ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul machine->Samplers = program->Base.SamplerUnits; 184ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul 185e48f0b09abe42aa3393a492af07e53b76ad0ff3cBrian /* if running a GLSL program (not ARB_fragment_program) */ 18684eba3ef71dfa822e5ff0463032cdd2e3515b888Ian Romanick if (ctx->Shader.CurrentFragmentProgram) { 1879d0b8d72d8d704ff4d8e10448b60cbb42f07eecbBrian Paul /* Store front/back facing value */ 188880411c72aee7c0ec81366bdf6ab8cf25bebb9d5Brian Paul machine->Attribs[FRAG_ATTRIB_FACE][col][0] = 1.0F - span->facing; 189af0ae93863b4c876e70efa4e7406f04a3409f135Brian } 19010b5895597d5e069183cb647d17eb412effceb4fBrian 191f6803de7396edda2223adf7ff7445579dbe475c9Brian machine->CurElement = col; 192865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 193865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* init condition codes */ 194865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[0] = COND_EQ; 195865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[1] = COND_EQ; 196865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[2] = COND_EQ; 197865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[3] = COND_EQ; 198865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 199865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* init call stack */ 200865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->StackDepth = 0; 201f6803de7396edda2223adf7ff7445579dbe475c9Brian 202ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul machine->FetchTexelLod = fetch_texel_lod; 203f6803de7396edda2223adf7ff7445579dbe475c9Brian machine->FetchTexelDeriv = fetch_texel_deriv; 204865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 205865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 206865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 207865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 208865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Run fragment program on the pixels in span from 'start' to 'end' - 1. 209865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 210865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 211f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergrun_program(struct gl_context *ctx, SWspan *span, GLuint start, GLuint end) 212865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 2131c09bcfdda4083636a3ac27d804a34ef87875ce7Brian SWcontext *swrast = SWRAST_CONTEXT(ctx); 214865f88afc0d59d886fb2ad50429e584ecf17fa81Brian const struct gl_fragment_program *program = ctx->FragmentProgram._Current; 2155606dfb572bf4b89b4882265924705bacc8c182bIan Romanick const GLbitfield64 outputsWritten = program->Base.OutputsWritten; 2168b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian struct gl_program_machine *machine = &swrast->FragProgMachine; 217865f88afc0d59d886fb2ad50429e584ecf17fa81Brian GLuint i; 218865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 219865f88afc0d59d886fb2ad50429e584ecf17fa81Brian for (i = start; i < end; i++) { 220865f88afc0d59d886fb2ad50429e584ecf17fa81Brian if (span->array->mask[i]) { 2218b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian init_machine(ctx, machine, program, span, i); 222865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 2238b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian if (_mesa_execute_program(ctx, &program->Base, machine)) { 2241c09bcfdda4083636a3ac27d804a34ef87875ce7Brian 225865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* Store result color */ 2265606dfb572bf4b89b4882265924705bacc8c182bIan Romanick if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) { 2271c09bcfdda4083636a3ac27d804a34ef87875ce7Brian COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0][i], 2288d475822e6e19fa79719c856a2db5b6a205db1b9Brian Paul machine->Outputs[FRAG_RESULT_COLOR]); 2291c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 2301c09bcfdda4083636a3ac27d804a34ef87875ce7Brian else { 2311c09bcfdda4083636a3ac27d804a34ef87875ce7Brian /* Multiple drawbuffers / render targets 2321c09bcfdda4083636a3ac27d804a34ef87875ce7Brian * Note that colors beyond 0 and 1 will overwrite other 2331c09bcfdda4083636a3ac27d804a34ef87875ce7Brian * attributes, such as FOGC, TEX0, TEX1, etc. That's OK. 2341c09bcfdda4083636a3ac27d804a34ef87875ce7Brian */ 235ff73c783cc47361ff0dd819c82d067b4b85870ddBrian GLuint buf; 236ff73c783cc47361ff0dd819c82d067b4b85870ddBrian for (buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) { 2375606dfb572bf4b89b4882265924705bacc8c182bIan Romanick if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_DATA0 + buf)) { 238ff73c783cc47361ff0dd819c82d067b4b85870ddBrian COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0 + buf][i], 239ff73c783cc47361ff0dd819c82d067b4b85870ddBrian machine->Outputs[FRAG_RESULT_DATA0 + buf]); 2401c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 2411c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 2421c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 243865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 244865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* Store result depth/z */ 2455606dfb572bf4b89b4882265924705bacc8c182bIan Romanick if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) { 2468d475822e6e19fa79719c856a2db5b6a205db1b9Brian Paul const GLfloat depth = machine->Outputs[FRAG_RESULT_DEPTH][2]; 247865f88afc0d59d886fb2ad50429e584ecf17fa81Brian if (depth <= 0.0) 248865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->array->z[i] = 0; 249865f88afc0d59d886fb2ad50429e584ecf17fa81Brian else if (depth >= 1.0) 250865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->array->z[i] = ctx->DrawBuffer->_DepthMax; 251865f88afc0d59d886fb2ad50429e584ecf17fa81Brian else 252d3561bd0bc4a88ee0500460f8e0830a818e456a9Brian Paul span->array->z[i] = 253d3561bd0bc4a88ee0500460f8e0830a818e456a9Brian Paul (GLuint) (depth * ctx->DrawBuffer->_DepthMaxF + 0.5F); 254865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 255865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 256865f88afc0d59d886fb2ad50429e584ecf17fa81Brian else { 257865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* killed fragment */ 258865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->array->mask[i] = GL_FALSE; 259865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->writeAll = GL_FALSE; 260865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 261865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 262865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 263865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 264865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 265865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 266865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 267865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Execute the current fragment program for all the fragments 268865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * in the given span. 269865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 270865f88afc0d59d886fb2ad50429e584ecf17fa81Brianvoid 271f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_swrast_exec_fragment_program( struct gl_context *ctx, SWspan *span ) 272865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 273865f88afc0d59d886fb2ad50429e584ecf17fa81Brian const struct gl_fragment_program *program = ctx->FragmentProgram._Current; 274865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 275865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* incoming colors should be floats */ 27617ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian if (program->Base.InputsRead & FRAG_BIT_COL0) { 27717ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian ASSERT(span->array->ChanType == GL_FLOAT); 27817ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian } 279865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 280865f88afc0d59d886fb2ad50429e584ecf17fa81Brian run_program(ctx, span, 0, span->end); 281865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 2825606dfb572bf4b89b4882265924705bacc8c182bIan Romanick if (program->Base.OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) { 28317ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian span->interpMask &= ~SPAN_RGBA; 28417ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian span->arrayMask |= SPAN_RGBA; 28517ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian } 28617ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian 2875606dfb572bf4b89b4882265924705bacc8c182bIan Romanick if (program->Base.OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) { 288865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->interpMask &= ~SPAN_Z; 289865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->arrayMask |= SPAN_Z; 290865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 291865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 292865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 293