s_fragprog.c revision be1a76f88f4c3482e61e0a048a0b28b6b628f223
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" 27c223c6b663cd5db39ba19c2be74b88cc3b8f53f3Brian#include "main/context.h" 28c223c6b663cd5db39ba19c2be74b88cc3b8f53f3Brian#include "main/texstate.h" 29c223c6b663cd5db39ba19c2be74b88cc3b8f53f3Brian#include "shader/prog_instruction.h" 30865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 31c968d3d410a1897ecbb41d3557adaef69a4c627aBrian#include "s_fragprog.h" 32865f88afc0d59d886fb2ad50429e584ecf17fa81Brian#include "s_span.h" 33865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 34865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 35865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 36ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul * Fetch a texel with given lod. 37ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul * Called via machine->FetchTexelLod() 38865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 39865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 40ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paulfetch_texel_lod( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda, 41ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul GLuint unit, GLfloat color[4] ) 42865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 43827e72de7537e62cac9652f8b7344ff356de9bb1Brian const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; 44865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 45be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul if (texObj) { 46be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul SWcontext *swrast = SWRAST_CONTEXT(ctx); 47be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul GLchan rgba[4]; 48be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul 49c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod); 50ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul 51be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul /* XXX use a float-valued TextureSample routine here!!! */ 52be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul swrast->TextureSample[unit](ctx, texObj, 1, 53be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul (const GLfloat (*)[4]) texcoord, 54be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul &lambda, &rgba); 55be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[0] = CHAN_TO_FLOAT(rgba[0]); 56be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[1] = CHAN_TO_FLOAT(rgba[1]); 57be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[2] = CHAN_TO_FLOAT(rgba[2]); 58be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[3] = CHAN_TO_FLOAT(rgba[3]); 59be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 60be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul else { 61be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[0] = color[1] = color[2] = color[3] = 0.0F; 62be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 63865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 64865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 65865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 66865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 67865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Fetch a texel with the given partial derivatives to compute a level 68865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * of detail in the mipmap. 69ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul * Called via machine->FetchTexelDeriv() 70865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 71865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 72865f88afc0d59d886fb2ad50429e584ecf17fa81Brianfetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4], 73865f88afc0d59d886fb2ad50429e584ecf17fa81Brian const GLfloat texdx[4], const GLfloat texdy[4], 74999b55663a09d9669a9d14c5aadfa84e6dcba288Brian GLfloat lodBias, GLuint unit, GLfloat color[4] ) 75865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 76865f88afc0d59d886fb2ad50429e584ecf17fa81Brian SWcontext *swrast = SWRAST_CONTEXT(ctx); 77865f88afc0d59d886fb2ad50429e584ecf17fa81Brian const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; 78865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 79c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul if (texObj) { 80be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul const struct gl_texture_image *texImg = 81be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul texObj->Image[0][texObj->BaseLevel]; 82c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul const GLfloat texW = (GLfloat) texImg->WidthScale; 83c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul const GLfloat texH = (GLfloat) texImg->HeightScale; 84be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul GLfloat lambda; 85be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul GLchan rgba[4]; 86865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 87c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul lambda = _swrast_compute_lambda(texdx[0], texdy[0], /* ds/dx, ds/dy */ 88c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul texdx[1], texdy[1], /* dt/dx, dt/dy */ 89c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul texdx[3], texdy[2], /* dq/dx, dq/dy */ 90c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul texW, texH, 91c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul texcoord[0], texcoord[1], texcoord[3], 92c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul 1.0F / texcoord[3]) + lodBias; 93c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul 94c71fa34728ef4eddd074aeb2bee49ae6a7acb3d1Brian Paul lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod); 95999b55663a09d9669a9d14c5aadfa84e6dcba288Brian 96be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul /* XXX use a float-valued TextureSample routine here!!! */ 97be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul swrast->TextureSample[unit](ctx, texObj, 1, 98be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul (const GLfloat (*)[4]) texcoord, 99be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul &lambda, &rgba); 100be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[0] = CHAN_TO_FLOAT(rgba[0]); 101be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[1] = CHAN_TO_FLOAT(rgba[1]); 102be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[2] = CHAN_TO_FLOAT(rgba[2]); 103be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[3] = CHAN_TO_FLOAT(rgba[3]); 104be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 105be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul else { 106be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul color[0] = color[1] = color[2] = color[3] = 0.0F; 107be1a76f88f4c3482e61e0a048a0b28b6b628f223Brian Paul } 108865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 109865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 110865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 111865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 112865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Initialize the virtual fragment program machine state prior to running 113865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * fragment program on a fragment. This involves initializing the input 114865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * registers, condition codes, etc. 115865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param machine the virtual machine state to init 116865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param program the fragment program we're about to run 117865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param span the span of pixels we'll operate on 118865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * \param col which element (column) of the span we'll operate on 119865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 120865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 121f6803de7396edda2223adf7ff7445579dbe475c9Brianinit_machine(GLcontext *ctx, struct gl_program_machine *machine, 122f6803de7396edda2223adf7ff7445579dbe475c9Brian const struct gl_fragment_program *program, 123f6803de7396edda2223adf7ff7445579dbe475c9Brian const SWspan *span, GLuint col) 124865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 125ced6f76404ff1a6713c85edff17551f82c33cc24Brian if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) { 126865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* Clear temporary registers (undefined for ARB_f_p) */ 127865f88afc0d59d886fb2ad50429e584ecf17fa81Brian _mesa_bzero(machine->Temporaries, 1283ed1acd13c7876288a5d1ab6d288b1654f0c2e6dBrian MAX_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); 129865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 130865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 131f3e507ef9f75dbfc58ccd07b5fe8cfca10d9a9e3Brian /* Setup pointer to input attributes */ 132f3e507ef9f75dbfc58ccd07b5fe8cfca10d9a9e3Brian machine->Attribs = span->array->attribs; 13310b5895597d5e069183cb647d17eb412effceb4fBrian 13460d136f63c5a5a18b12952ec8e8532cbce086a4dBrian machine->DerivX = (GLfloat (*)[4]) span->attrStepX; 13560d136f63c5a5a18b12952ec8e8532cbce086a4dBrian machine->DerivY = (GLfloat (*)[4]) span->attrStepY; 13660d136f63c5a5a18b12952ec8e8532cbce086a4dBrian machine->NumDeriv = FRAG_ATTRIB_MAX; 13760d136f63c5a5a18b12952ec8e8532cbce086a4dBrian 138ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul machine->Samplers = program->Base.SamplerUnits; 139ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul 140e48f0b09abe42aa3393a492af07e53b76ad0ff3cBrian /* if running a GLSL program (not ARB_fragment_program) */ 141af0ae93863b4c876e70efa4e7406f04a3409f135Brian if (ctx->Shader.CurrentProgram) { 142af0ae93863b4c876e70efa4e7406f04a3409f135Brian /* Store front/back facing value in register FOGC.Y */ 14302afd45d3b2eccff5d566cdeb32b3211803bd500Brian machine->Attribs[FRAG_ATTRIB_FOGC][col][1] = 1.0 - span->facing; 1443a428aca93fe2bab84ddfaf794a396133e802465Brian Paul /* Note FOGC.ZW is gl_PointCoord if drawing a sprite */ 145af0ae93863b4c876e70efa4e7406f04a3409f135Brian } 14610b5895597d5e069183cb647d17eb412effceb4fBrian 147f6803de7396edda2223adf7ff7445579dbe475c9Brian machine->CurElement = col; 148865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 149865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* init condition codes */ 150865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[0] = COND_EQ; 151865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[1] = COND_EQ; 152865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[2] = COND_EQ; 153865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->CondCodes[3] = COND_EQ; 154865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 155865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* init call stack */ 156865f88afc0d59d886fb2ad50429e584ecf17fa81Brian machine->StackDepth = 0; 157f6803de7396edda2223adf7ff7445579dbe475c9Brian 158ade508312c701ce89d3c2cd717994dbbabb4f207Brian Paul machine->FetchTexelLod = fetch_texel_lod; 159f6803de7396edda2223adf7ff7445579dbe475c9Brian machine->FetchTexelDeriv = fetch_texel_deriv; 160865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 161865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 162865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 163865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 164865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Run fragment program on the pixels in span from 'start' to 'end' - 1. 165865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 166865f88afc0d59d886fb2ad50429e584ecf17fa81Brianstatic void 167865f88afc0d59d886fb2ad50429e584ecf17fa81Brianrun_program(GLcontext *ctx, SWspan *span, GLuint start, GLuint end) 168865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 1691c09bcfdda4083636a3ac27d804a34ef87875ce7Brian SWcontext *swrast = SWRAST_CONTEXT(ctx); 170865f88afc0d59d886fb2ad50429e584ecf17fa81Brian const struct gl_fragment_program *program = ctx->FragmentProgram._Current; 1711c09bcfdda4083636a3ac27d804a34ef87875ce7Brian const GLbitfield outputsWritten = program->Base.OutputsWritten; 1728b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian struct gl_program_machine *machine = &swrast->FragProgMachine; 173865f88afc0d59d886fb2ad50429e584ecf17fa81Brian GLuint i; 174865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 175865f88afc0d59d886fb2ad50429e584ecf17fa81Brian for (i = start; i < end; i++) { 176865f88afc0d59d886fb2ad50429e584ecf17fa81Brian if (span->array->mask[i]) { 1778b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian init_machine(ctx, machine, program, span, i); 178865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 1798b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian if (_mesa_execute_program(ctx, &program->Base, machine)) { 1801c09bcfdda4083636a3ac27d804a34ef87875ce7Brian 181865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* Store result color */ 1821c09bcfdda4083636a3ac27d804a34ef87875ce7Brian if (outputsWritten & (1 << FRAG_RESULT_COLR)) { 1831c09bcfdda4083636a3ac27d804a34ef87875ce7Brian COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0][i], 1848b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian machine->Outputs[FRAG_RESULT_COLR]); 1851c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 1861c09bcfdda4083636a3ac27d804a34ef87875ce7Brian else { 1871c09bcfdda4083636a3ac27d804a34ef87875ce7Brian /* Multiple drawbuffers / render targets 1881c09bcfdda4083636a3ac27d804a34ef87875ce7Brian * Note that colors beyond 0 and 1 will overwrite other 1891c09bcfdda4083636a3ac27d804a34ef87875ce7Brian * attributes, such as FOGC, TEX0, TEX1, etc. That's OK. 1901c09bcfdda4083636a3ac27d804a34ef87875ce7Brian */ 191ff73c783cc47361ff0dd819c82d067b4b85870ddBrian GLuint buf; 192ff73c783cc47361ff0dd819c82d067b4b85870ddBrian for (buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) { 193ff73c783cc47361ff0dd819c82d067b4b85870ddBrian if (outputsWritten & (1 << (FRAG_RESULT_DATA0 + buf))) { 194ff73c783cc47361ff0dd819c82d067b4b85870ddBrian COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0 + buf][i], 195ff73c783cc47361ff0dd819c82d067b4b85870ddBrian machine->Outputs[FRAG_RESULT_DATA0 + buf]); 1961c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 1971c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 1981c09bcfdda4083636a3ac27d804a34ef87875ce7Brian } 199865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 200865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* Store result depth/z */ 2011c09bcfdda4083636a3ac27d804a34ef87875ce7Brian if (outputsWritten & (1 << FRAG_RESULT_DEPR)) { 2028b5fce6bcc88cd9dd321f0db95c1714e5e5e85a1Brian const GLfloat depth = machine->Outputs[FRAG_RESULT_DEPR][2]; 203865f88afc0d59d886fb2ad50429e584ecf17fa81Brian if (depth <= 0.0) 204865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->array->z[i] = 0; 205865f88afc0d59d886fb2ad50429e584ecf17fa81Brian else if (depth >= 1.0) 206865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->array->z[i] = ctx->DrawBuffer->_DepthMax; 207865f88afc0d59d886fb2ad50429e584ecf17fa81Brian else 208865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF); 209865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 210865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 211865f88afc0d59d886fb2ad50429e584ecf17fa81Brian else { 212865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* killed fragment */ 213865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->array->mask[i] = GL_FALSE; 214865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->writeAll = GL_FALSE; 215865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 216865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 217865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 218865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 219865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 220865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 221865f88afc0d59d886fb2ad50429e584ecf17fa81Brian/** 222865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * Execute the current fragment program for all the fragments 223865f88afc0d59d886fb2ad50429e584ecf17fa81Brian * in the given span. 224865f88afc0d59d886fb2ad50429e584ecf17fa81Brian */ 225865f88afc0d59d886fb2ad50429e584ecf17fa81Brianvoid 226865f88afc0d59d886fb2ad50429e584ecf17fa81Brian_swrast_exec_fragment_program( GLcontext *ctx, SWspan *span ) 227865f88afc0d59d886fb2ad50429e584ecf17fa81Brian{ 228865f88afc0d59d886fb2ad50429e584ecf17fa81Brian const struct gl_fragment_program *program = ctx->FragmentProgram._Current; 229865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 230865f88afc0d59d886fb2ad50429e584ecf17fa81Brian /* incoming colors should be floats */ 23117ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian if (program->Base.InputsRead & FRAG_BIT_COL0) { 23217ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian ASSERT(span->array->ChanType == GL_FLOAT); 23317ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian } 234865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 235865f88afc0d59d886fb2ad50429e584ecf17fa81Brian ctx->_CurrentProgram = GL_FRAGMENT_PROGRAM_ARB; /* or NV, doesn't matter */ 236865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 237865f88afc0d59d886fb2ad50429e584ecf17fa81Brian run_program(ctx, span, 0, span->end); 238865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 23917ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian if (program->Base.OutputsWritten & (1 << FRAG_RESULT_COLR)) { 24017ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian span->interpMask &= ~SPAN_RGBA; 24117ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian span->arrayMask |= SPAN_RGBA; 24217ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian } 24317ad1d12ebf04ebf4b2b35c1c37d36bb4d2bb550Brian 244865f88afc0d59d886fb2ad50429e584ecf17fa81Brian if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) { 245865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->interpMask &= ~SPAN_Z; 246865f88afc0d59d886fb2ad50429e584ecf17fa81Brian span->arrayMask |= SPAN_Z; 247865f88afc0d59d886fb2ad50429e584ecf17fa81Brian } 248865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 249865f88afc0d59d886fb2ad50429e584ecf17fa81Brian ctx->_CurrentProgram = 0; 250865f88afc0d59d886fb2ad50429e584ecf17fa81Brian} 251865f88afc0d59d886fb2ad50429e584ecf17fa81Brian 252