s_triangle.c revision 1e4731f6443a6efdfc4e425977490ddd5387caa3
1e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 2e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Mesa 3-D graphics library 3230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul * Version: 6.1 422144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 5230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. 622144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 7e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Permission is hereby granted, free of charge, to any person obtaining a 8e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * copy of this software and associated documentation files (the "Software"), 9e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * to deal in the Software without restriction, including without limitation 10e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * and/or sell copies of the Software, and to permit persons to whom the 12e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Software is furnished to do so, subject to the following conditions: 1322144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 14e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * The above copyright notice and this permission notice shall be included 15e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * in all copies or substantial portions of the Software. 1622144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 17e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 24e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 25e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 26e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 27709892459922a32096fe9dd8261d0d92337bb02fKeith Whitwell * When the device driver doesn't implement triangle rasterization it 28709892459922a32096fe9dd8261d0d92337bb02fKeith Whitwell * can hook in _swrast_Triangle, which eventually calls one of these 2938f28665bf9fb5b2464738ca5074848ec2777ae1Gareth Hughes * functions to draw triangles. 30e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 31e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 32e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "glheader.h" 33e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "context.h" 3446b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell#include "colormac.h" 353c63452e64df7e10aa073c6c3b9492b1d7dabbb8Brian Paul#include "imports.h" 36e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "macros.h" 3738e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul#include "texformat.h" 38e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "teximage.h" 39e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "texstate.h" 40e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 41e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_aatriangle.h" 42cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_context.h" 43e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_depth.h" 44cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_feedback.h" 45e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_span.h" 46cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_triangle.h" 479bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 489bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 4977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul/* 5077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul * Just used for feedback mode. 5177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul */ 52230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian PaulGLboolean 53230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul_swrast_culltriangle( GLcontext *ctx, 54230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const SWvertex *v0, 55230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const SWvertex *v1, 56230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const SWvertex *v2 ) 57e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 58cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell GLfloat ex = v1->win[0] - v0->win[0]; 59cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell GLfloat ey = v1->win[1] - v0->win[1]; 60cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell GLfloat fx = v2->win[0] - v0->win[0]; 61cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell GLfloat fy = v2->win[1] - v0->win[1]; 62e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell GLfloat c = ex*fy-ey*fx; 63e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 6487f858dd7cbca2280c983c77a239013a187c3e9aBrian Paul if (c * SWRAST_CONTEXT(ctx)->_BackfaceSign > 0) 65e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return 0; 6622144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes 67e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return 1; 68e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 69e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 70e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 7195e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul 72e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 73e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a flat-shaded color index triangle. 74e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 75cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME flat_ci_triangle 76e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 7795e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 78cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define SETUP_CODE \ 79cdf2da368d180205df3573697b51b8764048ad6eBrian Paul span.interpMask |= SPAN_INDEX; \ 801e4731f6443a6efdfc4e425977490ddd5387caa3Brian Paul span.index = FloatToFixed(v2->index);\ 8177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.indexStep = 0; 8245bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_index_span(ctx, &span); 8322144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes#include "s_tritemp.h" 84e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 85e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 86e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 87e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 88e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a smooth-shaded color index triangle. 89e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 90cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME smooth_ci_triangle 91e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 9295e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 93e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_INDEX 1 9445bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_index_span(ctx, &span); 95e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 96e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 97e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 98e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 99e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 100e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a flat-shaded RGBA triangle. 101e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 102cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME flat_rgba_triangle 103e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 10495e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 105e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 106f1e236987829393c81dc86ea19cb49eefe190317Brian Paul#define SETUP_CODE \ 10736a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul ASSERT(ctx->Texture._EnabledCoordUnits == 0);\ 1087956292a765910077f50352d7cd0174e1e66d26cBrian Paul ASSERT(ctx->Light.ShadeModel==GL_FLAT); \ 10977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.interpMask |= SPAN_RGBA; \ 11077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.red = ChanToFixed(v2->color[0]); \ 11177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.green = ChanToFixed(v2->color[1]); \ 11277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.blue = ChanToFixed(v2->color[2]); \ 11377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.alpha = ChanToFixed(v2->color[3]); \ 11477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.redStep = 0; \ 11577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.greenStep = 0; \ 11677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.blueStep = 0; \ 11777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.alphaStep = 0; 11845bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_rgba_span(ctx, &span); 119e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 120e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 121e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 122e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 123e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 124e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a smooth-shaded RGBA triangle. 125e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 126cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME smooth_rgba_triangle 127e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 12895e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 129e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 130e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 131e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 132733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul#define SETUP_CODE \ 133733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul { \ 134733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul /* texturing must be off */ \ 13536a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul ASSERT(ctx->Texture._EnabledCoordUnits == 0); \ 136733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul ASSERT(ctx->Light.ShadeModel==GL_SMOOTH); \ 137733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul } 13845bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_rgba_span(ctx, &span); 139e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 140e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 141e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 142e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 143e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 144e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render an RGB, GL_DECAL, textured triangle. 145e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Interpolate S,T only w/out mipmapping or perspective correction. 146e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 147e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * No fog. 148e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 149cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME simple_textured_triangle 150e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_INT_TEX 1 151e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define S_SCALE twidth 152e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define T_SCALE theight 1539bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 154e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define SETUP_CODE \ 155709892459922a32096fe9dd8261d0d92337bb02fKeith Whitwell SWcontext *swrast = SWRAST_CONTEXT(ctx); \ 156a852378a6289d154364dde440f89a39bbfc33e2dBrian Paul struct gl_texture_object *obj = ctx->Texture.Unit[0].Current2D; \ 1572ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const GLint b = obj->BaseLevel; \ 15818fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \ 15918fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \ 160230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const GLint twidth_log2 = obj->Image[0][b]->WidthLog2; \ 16118fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLchan *texture = (const GLchan *) obj->Image[0][b]->Data; \ 16218fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLint smask = obj->Image[0][b]->Width - 1; \ 16318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLint tmask = obj->Image[0][b]->Height - 1; \ 164e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (!texture) { \ 1658e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul /* this shouldn't happen */ \ 1668e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 167e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 168e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define RENDER_SPAN( span ) \ 1709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; \ 17177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] -= FIXED_HALF; /* off-by-one error? */ \ 17277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] -= FIXED_HALF; \ 17377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul for (i = 0; i < span.end; i++) { \ 17477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint s = FixedToInt(span.intTex[0]) & smask; \ 17577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint t = FixedToInt(span.intTex[1]) & tmask; \ 1769bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << twidth_log2) + s; \ 1779bf68ad963ba92b5d1e725f965979042495a5313Brian Paul pos = pos + pos + pos; /* multiply by 3 */ \ 17877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][RCOMP] = texture[pos]; \ 17977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][GCOMP] = texture[pos+1]; \ 18077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][BCOMP] = texture[pos+2]; \ 18177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] += span.intTexStep[0]; \ 18277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] += span.intTexStep[1]; \ 1839bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 18477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul (*swrast->Driver.WriteRGBSpan)(ctx, span.end, span.x, span.y, \ 18577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul (CONST GLchan (*)[3]) span.array->rgb,\ 1862ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul NULL ); 187e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 188cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 189e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 190e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 191e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 192e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render an RGB, GL_DECAL, textured triangle. 193e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Interpolate S,T, GL_LESS depth test, w/out mipmapping or 194e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * perspective correction. 19522144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 196e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * No fog. 197e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 198cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME simple_z_textured_triangle 199e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 200e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 201e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_INT_TEX 1 202e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define S_SCALE twidth 203e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define T_SCALE theight 2049bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 205e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define SETUP_CODE \ 206709892459922a32096fe9dd8261d0d92337bb02fKeith Whitwell SWcontext *swrast = SWRAST_CONTEXT(ctx); \ 207a852378a6289d154364dde440f89a39bbfc33e2dBrian Paul struct gl_texture_object *obj = ctx->Texture.Unit[0].Current2D; \ 2082ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const GLint b = obj->BaseLevel; \ 20918fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \ 21018fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \ 211230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const GLint twidth_log2 = obj->Image[0][b]->WidthLog2; \ 21218fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLchan *texture = (const GLchan *) obj->Image[0][b]->Data; \ 21318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLint smask = obj->Image[0][b]->Width - 1; \ 21418fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLint tmask = obj->Image[0][b]->Height - 1; \ 215e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (!texture) { \ 2168e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul /* this shouldn't happen */ \ 2178e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 218e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 219e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2209bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define RENDER_SPAN( span ) \ 2219bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; \ 22277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] -= FIXED_HALF; /* off-by-one error? */ \ 22377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] -= FIXED_HALF; \ 22477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul for (i = 0; i < span.end; i++) { \ 22577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul const GLdepth z = FixedToDepth(span.z); \ 2269bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (z < zRow[i]) { \ 22777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint s = FixedToInt(span.intTex[0]) & smask; \ 22877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint t = FixedToInt(span.intTex[1]) & tmask; \ 2299bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << twidth_log2) + s; \ 2309bf68ad963ba92b5d1e725f965979042495a5313Brian Paul pos = pos + pos + pos; /* multiply by 3 */ \ 23177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][RCOMP] = texture[pos]; \ 23277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][GCOMP] = texture[pos+1]; \ 23377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][BCOMP] = texture[pos+2]; \ 2349bf68ad963ba92b5d1e725f965979042495a5313Brian Paul zRow[i] = z; \ 23577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->mask[i] = 1; \ 2369bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 2379bf68ad963ba92b5d1e725f965979042495a5313Brian Paul else { \ 23877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->mask[i] = 0; \ 2399bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 24077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] += span.intTexStep[0]; \ 24177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] += span.intTexStep[1]; \ 24277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.z += span.zStep; \ 2439bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 24477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul (*swrast->Driver.WriteRGBSpan)(ctx, span.end, span.x, span.y, \ 24577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul (CONST GLchan (*)[3]) span.array->rgb,\ 24677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->mask ); 247e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 248cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 249e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 250e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 251f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul#if CHAN_TYPE != GL_FLOAT 252e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2539bf68ad963ba92b5d1e725f965979042495a5313Brian Paulstruct affine_info 254e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 2559bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum filter; 2569bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum format; 2579bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum envmode; 2589bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint smask, tmask; 2599bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint twidth_log2; 2609bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *texture; 261fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul GLfixed er, eg, eb, ea; 2629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint tbytesline, tsize; 2639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul}; 264cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell 2657152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul 2667152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul/* This function can handle GL_NEAREST or GL_LINEAR sampling of 2D RGB or RGBA 2677152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul * textures with GL_REPLACE, GL_MODULATE, GL_BLEND, GL_DECAL or GL_ADD 2687152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul * texture env modes. 2697152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul */ 27071340e861edf35bfdeb536718cd230fc33c41ee2Brian Paulstatic INLINE void 27157d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paulaffine_span(GLcontext *ctx, struct sw_span *span, 2729bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct affine_info *info) 2739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul{ 2747152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLchan sample[4]; /* the filtered texture sample */ 275e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 276fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul /* Instead of defining a function for each mode, a test is done 277fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * between the outer and inner loops. This is to reduce code size 278fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * and complexity. Observe that an optimizing compiler kills 279fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST). 280fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul */ 281e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 282bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul#define NEAREST_RGB \ 2837152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[RCOMP] = tex00[RCOMP]; \ 2847152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[GCOMP] = tex00[GCOMP]; \ 2857152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[BCOMP] = tex00[BCOMP]; \ 2867152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[ACOMP] = CHAN_MAX 287e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define LINEAR_RGB \ 2897152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \ 290bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT; \ 2917152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \ 292bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT; \ 2937152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \ 294bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT; \ 2957152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[ACOMP] = CHAN_MAX 296bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 2977152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul#define NEAREST_RGBA COPY_CHAN4(sample, tex00) 298e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2999bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define LINEAR_RGBA \ 3007152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \ 301bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT;\ 3027152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \ 303bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT;\ 3047152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \ 305bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT;\ 3067152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[ACOMP] = (ti * (si * tex00[3] + sf * tex01[3]) + \ 307bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[3] + sf * tex11[3])) >> 2 * FIXED_SHIFT 308bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 309fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul#define MODULATE \ 3107152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = span->red * (sample[RCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3117152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = span->green * (sample[GCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3127152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = span->blue * (sample[BCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3137152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1u) >> (FIXED_SHIFT + 8) 3149bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 3159bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define DECAL \ 3167152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->red + \ 3177152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[RCOMP] << FIXED_SHIFT)) \ 318bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 3197152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->green + \ 3207152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[GCOMP] << FIXED_SHIFT)) \ 321bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 3227152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->blue + \ 3237152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[BCOMP] << FIXED_SHIFT)) \ 324bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 325bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul dest[ACOMP] = FixedToInt(span->alpha) 3269bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 3279bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define BLEND \ 3287152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = ((CHAN_MAX - sample[RCOMP]) * span->red \ 3297152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[RCOMP] + 1) * info->er) >> (FIXED_SHIFT + 8); \ 3307152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = ((CHAN_MAX - sample[GCOMP]) * span->green \ 3317152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[GCOMP] + 1) * info->eg) >> (FIXED_SHIFT + 8); \ 3327152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = ((CHAN_MAX - sample[BCOMP]) * span->blue \ 3337152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[BCOMP] + 1) * info->eb) >> (FIXED_SHIFT + 8); \ 3347152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8) 335bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 3367152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul#define REPLACE COPY_CHAN4(dest, sample) 337e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 3389bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define ADD \ 3397152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul { \ 3407152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint rSum = FixedToInt(span->red) + (GLint) sample[RCOMP]; \ 3417152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint gSum = FixedToInt(span->green) + (GLint) sample[GCOMP]; \ 3427152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint bSum = FixedToInt(span->blue) + (GLint) sample[BCOMP]; \ 3437152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = MIN2(rSum, CHAN_MAX); \ 3447152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = MIN2(gSum, CHAN_MAX); \ 3457152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = MIN2(bSum, CHAN_MAX); \ 3467152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8); \ 3477152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul } 348e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 349e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* shortcuts */ 350e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 35135e5e89f5614ebb032479b02dec888563f829b30Brian Paul#define NEAREST_RGB_REPLACE \ 35235e5e89f5614ebb032479b02dec888563f829b30Brian Paul NEAREST_RGB; \ 35335e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[0] = sample[0]; \ 35435e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[1] = sample[1]; \ 35535e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[2] = sample[2]; \ 35635e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[3] = FixedToInt(span->alpha); 357e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 358bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul#define NEAREST_RGBA_REPLACE COPY_CHAN4(dest, tex00) 359e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 36033170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_NEAREST(DO_TEX,COMP) \ 36157d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 36233170eeb185f5fe766374a749464497cdfab6931Brian Paul /* Isn't it necessary to use FixedFloor below?? */ \ 3639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint s = FixedToInt(span->intTex[0]) & info->smask; \ 3649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint t = FixedToInt(span->intTex[1]) & info->tmask; \ 3659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 3669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 3679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul DO_TEX; \ 3689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->red += span->redStep; \ 3699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->green += span->greenStep; \ 3709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->blue += span->blueStep; \ 3719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->alpha += span->alphaStep; \ 3729bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] += span->intTexStep[0]; \ 3739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] += span->intTexStep[1]; \ 3749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul dest += 4; \ 375e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 376e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 37733170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_LINEAR(DO_TEX,COMP) \ 37857d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 37933170eeb185f5fe766374a749464497cdfab6931Brian Paul /* Isn't it necessary to use FixedFloor below?? */ \ 3809bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint s = FixedToInt(span->intTex[0]) & info->smask; \ 3819bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint t = FixedToInt(span->intTex[1]) & info->tmask; \ 38233170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed sf = span->intTex[0] & FIXED_FRAC_MASK; \ 38333170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed tf = span->intTex[1] & FIXED_FRAC_MASK; \ 38433170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed si = FIXED_FRAC_MASK - sf; \ 38533170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed ti = FIXED_FRAC_MASK - tf; \ 3869bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 3879bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 3889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex10 = tex00 + info->tbytesline; \ 3899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex01 = tex00 + COMP; \ 3909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex11 = tex10 + COMP; \ 3919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul (void) ti; \ 3929bf68ad963ba92b5d1e725f965979042495a5313Brian Paul (void) si; \ 3939bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (t == info->tmask) { \ 3949bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex10 -= info->tsize; \ 3959bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex11 -= info->tsize; \ 3969bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 3979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (s == info->smask) { \ 3989bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex01 -= info->tbytesline; \ 3999bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex11 -= info->tbytesline; \ 4009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 4019bf68ad963ba92b5d1e725f965979042495a5313Brian Paul DO_TEX; \ 4029bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->red += span->redStep; \ 4039bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->green += span->greenStep; \ 4049bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->blue += span->blueStep; \ 4059bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->alpha += span->alphaStep; \ 4069bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] += span->intTexStep[0]; \ 4079bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] += span->intTexStep[1]; \ 4089bf68ad963ba92b5d1e725f965979042495a5313Brian Paul dest += 4; \ 409e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 410e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 4119bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 4129bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; 41377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLchan *dest = span->array->rgba[0]; 41457d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul 4159bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] -= FIXED_HALF; 4169bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] -= FIXED_HALF; 4179bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->filter) { 4189bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_NEAREST: 4199bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->format) { 4209bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGB: 4219bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4229bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 42333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;MODULATE,3); 4249bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4259bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 4269bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 42733170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB_REPLACE,3); 4289bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4299bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 43033170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;BLEND,3); 4319bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4329bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 43333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;ADD,3); 4349bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4364663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode in SPAN_LINEAR"); 4374663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4389bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4399bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4409bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGBA: 4419bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch(info->envmode) { 4429bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 44333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;MODULATE,4); 4449bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4459bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 44633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;DECAL,4); 4479bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4489bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 44933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;BLEND,4); 4509bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4519bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 45233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;ADD,4); 4539bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4549bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 45533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA_REPLACE,4); 4569bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4579bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4584663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (2) in SPAN_LINEAR"); 4594663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4609bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4619bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 4659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_LINEAR: 4669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] -= FIXED_HALF; 4679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] -= FIXED_HALF; 4689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->format) { 4699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGB: 4709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 47233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;MODULATE,3); 4739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 4759bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 47633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;REPLACE,3); 4779bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4789bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 47933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;BLEND,3); 4809bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4819bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 48233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;ADD,3); 4839bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4849bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4854663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (3) in SPAN_LINEAR"); 4864663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4879bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGBA: 4909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 49233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;MODULATE,4); 4939bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4949bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 49533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;DECAL,4); 4969bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 49833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;BLEND,4); 4999bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 50133170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;ADD,4); 5029bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5039bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 50433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;REPLACE,4); 5059bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5069bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 5074663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (4) in SPAN_LINEAR"); 5084663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 5094663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul } 5104663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul break; 5119bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 5129bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5139bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 514733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul span->interpMask &= ~SPAN_RGBA; 5152a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul ASSERT(span->arrayMask & SPAN_RGBA); 51645bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 517e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 51833170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_NEAREST 51933170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_LINEAR 520e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 521e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 522e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 523e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 524e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 5259bf68ad963ba92b5d1e725f965979042495a5313Brian Paul * Render an RGB/RGBA textured triangle without perspective correction. 5269bf68ad963ba92b5d1e725f965979042495a5313Brian Paul */ 527cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME affine_textured_triangle 5289bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_Z 1 5299bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_FOG 1 5309bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 5319bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_RGB 1 5329bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_ALPHA 1 5339bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_INT_TEX 1 5349bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define S_SCALE twidth 5359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define T_SCALE theight 5369bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 537571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul#define SETUP_CODE \ 538571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul struct affine_info info; \ 5399bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct gl_texture_unit *unit = ctx->Texture.Unit+0; \ 5409bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct gl_texture_object *obj = unit->Current2D; \ 5412ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const GLint b = obj->BaseLevel; \ 54218fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \ 54318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \ 544230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.texture = (const GLchan *) obj->Image[0][b]->Data; \ 545230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.twidth_log2 = obj->Image[0][b]->WidthLog2; \ 54618fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.smask = obj->Image[0][b]->Width - 1; \ 54718fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tmask = obj->Image[0][b]->Height - 1; \ 548230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.format = obj->Image[0][b]->Format; \ 5499bf68ad963ba92b5d1e725f965979042495a5313Brian Paul info.filter = obj->MinFilter; \ 5509bf68ad963ba92b5d1e725f965979042495a5313Brian Paul info.envmode = unit->EnvMode; \ 55177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.arrayMask |= SPAN_RGBA; \ 5529bf68ad963ba92b5d1e725f965979042495a5313Brian Paul \ 5539bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (info.envmode == GL_BLEND) { \ 5549bf68ad963ba92b5d1e725f965979042495a5313Brian Paul /* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \ 555fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \ 556fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \ 557fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \ 558fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \ 5599bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 5609bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (!info.texture) { \ 5619bf68ad963ba92b5d1e725f965979042495a5313Brian Paul /* this shouldn't happen */ \ 5629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul return; \ 5639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 5649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul \ 5659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info.format) { \ 5669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ALPHA: \ 5679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_LUMINANCE: \ 5689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_INTENSITY: \ 569230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.tbytesline = obj->Image[0][b]->Width; \ 5709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_LUMINANCE_ALPHA: \ 57218fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 2; \ 5739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGB: \ 57518fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 3; \ 5769bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5779bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGBA: \ 57818fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 4; \ 5799bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5809bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: \ 5819bf68ad963ba92b5d1e725f965979042495a5313Brian Paul _mesa_problem(NULL, "Bad texture format in affine_texture_triangle");\ 5829bf68ad963ba92b5d1e725f965979042495a5313Brian Paul return; \ 5839bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 58418fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tsize = obj->Image[0][b]->Height * info.tbytesline; 5859bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 58677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul#define RENDER_SPAN( span ) affine_span(ctx, &span, &info); 5879bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 5889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#include "s_tritemp.h" 5899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 590f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul 5919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 59233170eeb185f5fe766374a749464497cdfab6931Brian Paulstruct persp_info 593e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 59433170eeb185f5fe766374a749464497cdfab6931Brian Paul GLenum filter; 59533170eeb185f5fe766374a749464497cdfab6931Brian Paul GLenum format; 59633170eeb185f5fe766374a749464497cdfab6931Brian Paul GLenum envmode; 59733170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint smask, tmask; 59833170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint twidth_log2; 59933170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *texture; 600fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul GLfixed er, eg, eb, ea; /* texture env color */ 60133170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint tbytesline, tsize; 60233170eeb185f5fe766374a749464497cdfab6931Brian Paul}; 603e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 604f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul 60571340e861edf35bfdeb536718cd230fc33c41ee2Brian Paulstatic INLINE void 60657d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paulfast_persp_span(GLcontext *ctx, struct sw_span *span, 60733170eeb185f5fe766374a749464497cdfab6931Brian Paul struct persp_info *info) 60833170eeb185f5fe766374a749464497cdfab6931Brian Paul{ 6097152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLchan sample[4]; /* the filtered texture sample */ 6109bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 61133170eeb185f5fe766374a749464497cdfab6931Brian Paul /* Instead of defining a function for each mode, a test is done 61233170eeb185f5fe766374a749464497cdfab6931Brian Paul * between the outer and inner loops. This is to reduce code size 61333170eeb185f5fe766374a749464497cdfab6931Brian Paul * and complexity. Observe that an optimizing compiler kills 61433170eeb185f5fe766374a749464497cdfab6931Brian Paul * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST). 61533170eeb185f5fe766374a749464497cdfab6931Brian Paul */ 61633170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_NEAREST(DO_TEX,COMP) \ 61757d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 61833170eeb185f5fe766374a749464497cdfab6931Brian Paul GLdouble invQ = tex_coord[2] ? \ 61933170eeb185f5fe766374a749464497cdfab6931Brian Paul (1.0 / tex_coord[2]) : 1.0; \ 6207c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ); \ 6217c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ); \ 62233170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint s = IFLOOR(s_tmp) & info->smask; \ 62333170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint t = IFLOOR(t_tmp) & info->tmask; \ 62433170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 62533170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 62633170eeb185f5fe766374a749464497cdfab6931Brian Paul DO_TEX; \ 62733170eeb185f5fe766374a749464497cdfab6931Brian Paul span->red += span->redStep; \ 62833170eeb185f5fe766374a749464497cdfab6931Brian Paul span->green += span->greenStep; \ 62933170eeb185f5fe766374a749464497cdfab6931Brian Paul span->blue += span->blueStep; \ 63033170eeb185f5fe766374a749464497cdfab6931Brian Paul span->alpha += span->alphaStep; \ 63133170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[0] += tex_step[0]; \ 63233170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[1] += tex_step[1]; \ 63333170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[2] += tex_step[2]; \ 63433170eeb185f5fe766374a749464497cdfab6931Brian Paul dest += 4; \ 63533170eeb185f5fe766374a749464497cdfab6931Brian Paul } 636e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 63733170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_LINEAR(DO_TEX,COMP) \ 63857d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 63933170eeb185f5fe766374a749464497cdfab6931Brian Paul GLdouble invQ = tex_coord[2] ? \ 64033170eeb185f5fe766374a749464497cdfab6931Brian Paul (1.0 / tex_coord[2]) : 1.0; \ 6417c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ); \ 6427c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ); \ 643bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul GLfixed s_fix = FloatToFixed(s_tmp) - FIXED_HALF; \ 644bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul GLfixed t_fix = FloatToFixed(t_tmp) - FIXED_HALF; \ 64533170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint s = FixedToInt(FixedFloor(s_fix)) & info->smask; \ 64633170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint t = FixedToInt(FixedFloor(t_fix)) & info->tmask; \ 647fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul GLfixed sf = s_fix & FIXED_FRAC_MASK; \ 648fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul GLfixed tf = t_fix & FIXED_FRAC_MASK; \ 64933170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed si = FIXED_FRAC_MASK - sf; \ 65033170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed ti = FIXED_FRAC_MASK - tf; \ 65133170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 65233170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 65333170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex10 = tex00 + info->tbytesline; \ 65433170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex01 = tex00 + COMP; \ 65533170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex11 = tex10 + COMP; \ 65633170eeb185f5fe766374a749464497cdfab6931Brian Paul (void) ti; \ 65733170eeb185f5fe766374a749464497cdfab6931Brian Paul (void) si; \ 65833170eeb185f5fe766374a749464497cdfab6931Brian Paul if (t == info->tmask) { \ 65933170eeb185f5fe766374a749464497cdfab6931Brian Paul tex10 -= info->tsize; \ 66033170eeb185f5fe766374a749464497cdfab6931Brian Paul tex11 -= info->tsize; \ 66133170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 66233170eeb185f5fe766374a749464497cdfab6931Brian Paul if (s == info->smask) { \ 66333170eeb185f5fe766374a749464497cdfab6931Brian Paul tex01 -= info->tbytesline; \ 66433170eeb185f5fe766374a749464497cdfab6931Brian Paul tex11 -= info->tbytesline; \ 66533170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 66633170eeb185f5fe766374a749464497cdfab6931Brian Paul DO_TEX; \ 66733170eeb185f5fe766374a749464497cdfab6931Brian Paul span->red += span->redStep; \ 66833170eeb185f5fe766374a749464497cdfab6931Brian Paul span->green += span->greenStep; \ 66933170eeb185f5fe766374a749464497cdfab6931Brian Paul span->blue += span->blueStep; \ 67033170eeb185f5fe766374a749464497cdfab6931Brian Paul span->alpha += span->alphaStep; \ 67133170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[0] += tex_step[0]; \ 67233170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[1] += tex_step[1]; \ 67333170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[2] += tex_step[2]; \ 67433170eeb185f5fe766374a749464497cdfab6931Brian Paul dest += 4; \ 67533170eeb185f5fe766374a749464497cdfab6931Brian Paul } 676e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 67733170eeb185f5fe766374a749464497cdfab6931Brian Paul GLuint i; 67833170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfloat tex_coord[3], tex_step[3]; 67977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLchan *dest = span->array->rgba[0]; 68057d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul 68131f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_coord[0] = span->tex[0][0] * (info->smask + 1); 68231f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_step[0] = span->texStepX[0][0] * (info->smask + 1); 68331f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_coord[1] = span->tex[0][1] * (info->tmask + 1); 68431f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_step[1] = span->texStepX[0][1] * (info->tmask + 1); 68533170eeb185f5fe766374a749464497cdfab6931Brian Paul /* span->tex[0][2] only if 3D-texturing, here only 2D */ 68631f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_coord[2] = span->tex[0][3]; 68731f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_step[2] = span->texStepX[0][3]; 688e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 68933170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->filter) { 69033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_NEAREST: 69133170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->format) { 69233170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGB: 69333170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 69433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 69533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;MODULATE,3); 69633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 69733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 69833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 69933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB_REPLACE,3); 70033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 70233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;BLEND,3); 70333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 70533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;ADD,3); 70633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70733170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7084663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (5) in SPAN_LINEAR"); 7094663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 71033170eeb185f5fe766374a749464497cdfab6931Brian Paul } 71133170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 71233170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGBA: 71333170eeb185f5fe766374a749464497cdfab6931Brian Paul switch(info->envmode) { 71433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 71533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;MODULATE,4); 71633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 71733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 71833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;DECAL,4); 71933170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 72133170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;BLEND,4); 72233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72333170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 72433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;ADD,4); 72533170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72633170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 72733170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA_REPLACE,4); 72833170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72933170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7304663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (6) in SPAN_LINEAR"); 7314663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 73233170eeb185f5fe766374a749464497cdfab6931Brian Paul } 73333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 73433170eeb185f5fe766374a749464497cdfab6931Brian Paul } 73533170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 73633170eeb185f5fe766374a749464497cdfab6931Brian Paul 73733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_LINEAR: 73833170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->format) { 73933170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGB: 74033170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 74133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 74233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;MODULATE,3); 74333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 74433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 74533170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 74633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;REPLACE,3); 74733170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 74833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 74933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;BLEND,3); 75033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 75133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 75233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;ADD,3); 75333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 75433170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7554663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (7) in SPAN_LINEAR"); 7564663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 75733170eeb185f5fe766374a749464497cdfab6931Brian Paul } 75833170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 75933170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGBA: 76033170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 76133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 76233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;MODULATE,4); 76333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 76433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 76533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;DECAL,4); 76633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 76733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 76833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;BLEND,4); 76933170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 77133170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;ADD,4); 77233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77333170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 77433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;REPLACE,4); 77533170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77633170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7774663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (8) in SPAN_LINEAR"); 7784663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 77933170eeb185f5fe766374a749464497cdfab6931Brian Paul } 78033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 78133170eeb185f5fe766374a749464497cdfab6931Brian Paul } 78233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 783e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 78433170eeb185f5fe766374a749464497cdfab6931Brian Paul 7852a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul ASSERT(span->arrayMask & SPAN_RGBA); 78645bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 787e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 78833170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_NEAREST 78933170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_LINEAR 790e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 791e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 792e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 793e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 794e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render an perspective corrected RGB/RGBA textured triangle. 795e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * The Q (aka V in Mesa) coordinate must be zero such that the divide 796e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * by interpolated Q/W comes out right. 797e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 798e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 799cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME persp_textured_triangle 800e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 80109da0b8e6621a831e3eeb9381430f2bed18a22adBrian Paul#define INTERP_W 1 80295e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 803e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 804e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 805e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 806e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_TEX 1 8079bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 808571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul#define SETUP_CODE \ 809571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul struct persp_info info; \ 8102ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const struct gl_texture_unit *unit = ctx->Texture.Unit+0; \ 8112ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const struct gl_texture_object *obj = unit->Current2D; \ 8122ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const GLint b = obj->BaseLevel; \ 813230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.texture = (const GLchan *) obj->Image[0][b]->Data; \ 814230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.twidth_log2 = obj->Image[0][b]->WidthLog2; \ 81518fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.smask = obj->Image[0][b]->Width - 1; \ 81618fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tmask = obj->Image[0][b]->Height - 1; \ 817230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.format = obj->Image[0][b]->Format; \ 81833170eeb185f5fe766374a749464497cdfab6931Brian Paul info.filter = obj->MinFilter; \ 81933170eeb185f5fe766374a749464497cdfab6931Brian Paul info.envmode = unit->EnvMode; \ 82033170eeb185f5fe766374a749464497cdfab6931Brian Paul \ 82133170eeb185f5fe766374a749464497cdfab6931Brian Paul if (info.envmode == GL_BLEND) { \ 82233170eeb185f5fe766374a749464497cdfab6931Brian Paul /* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \ 823fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \ 824fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \ 825fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \ 826fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \ 82733170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 82833170eeb185f5fe766374a749464497cdfab6931Brian Paul if (!info.texture) { \ 82933170eeb185f5fe766374a749464497cdfab6931Brian Paul /* this shouldn't happen */ \ 8308e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 831e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } \ 83233170eeb185f5fe766374a749464497cdfab6931Brian Paul \ 83333170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info.format) { \ 834e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_ALPHA: \ 835e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_LUMINANCE: \ 836e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_INTENSITY: \ 837230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.tbytesline = obj->Image[0][b]->Width; \ 83833170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 839e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_LUMINANCE_ALPHA: \ 84018fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 2; \ 84133170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 842e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_RGB: \ 84318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 3; \ 84433170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 845e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_RGBA: \ 84618fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 4; \ 84733170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 848e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell default: \ 849fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul _mesa_problem(NULL, "Bad texture format in persp_textured_triangle");\ 85033170eeb185f5fe766374a749464497cdfab6931Brian Paul return; \ 85133170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 85218fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tsize = obj->Image[0][b]->Height * info.tbytesline; 853e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 8547956292a765910077f50352d7cd0174e1e66d26cBrian Paul#define RENDER_SPAN( span ) \ 85577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.interpMask &= ~SPAN_RGBA; \ 85677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.arrayMask |= SPAN_RGBA; \ 85777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul fast_persp_span(ctx, &span, &info); 858e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 859e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 860e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 861fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul 86296385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#endif /* CHAN_BITS != GL_FLOAT */ 86396385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul 8649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul/* 868e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a smooth-shaded, textured, RGBA triangle. 8699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul * Interpolate S,T,R with perspective correction, w/out mipmapping. 870e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 871cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME general_textured_triangle 872e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 87354e92e8420a028f07b0971ee8aa93be9b4214579Brian Paul#define INTERP_W 1 87495e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 875e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 876e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 877e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_SPEC 1 878e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 879e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_TEX 1 88045bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_texture_span(ctx, &span); 881e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 882e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 883e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 884f1e236987829393c81dc86ea19cb49eefe190317Brian Paul 885e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 886e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * This is the big one! 88731f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul * Interpolate Z, RGB, Alpha, specular, fog, and N sets of texture coordinates. 888e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Yup, it's slow. 889e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 890cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME multitextured_triangle 891e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 89254e92e8420a028f07b0971ee8aa93be9b4214579Brian Paul#define INTERP_W 1 89395e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 894e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 895e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 896e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 8979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_SPEC 1 898e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_MULTITEX 1 89945bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_texture_span(ctx, &span); 900e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 901e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 902e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 903e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 904b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul/* 905b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul * Special tri function for occlusion testing 906b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul */ 907cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME occlusion_zless_triangle 908e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DO_OCCLUSION_TEST 909e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 910e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 911b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul#define SETUP_CODE \ 912b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul if (ctx->OcclusionResult && !ctx->Occlusion.Active) { \ 913b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul return; \ 914cdf2da368d180205df3573697b51b8764048ad6eBrian Paul } 9159bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define RENDER_SPAN( span ) \ 9169bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; \ 91777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul for (i = 0; i < span.end; i++) { \ 91877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLdepth z = FixedToDepth(span.z); \ 9199bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (z < zRow[i]) { \ 9209bf68ad963ba92b5d1e725f965979042495a5313Brian Paul ctx->OcclusionResult = GL_TRUE; \ 921b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul ctx->Occlusion.PassedCounter++; \ 9229bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 92377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.z += span.zStep; \ 924e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 925e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 926e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 927cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 928cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 929cdf2da368d180205df3573697b51b8764048ad6eBrian Paulstatic void 930cdf2da368d180205df3573697b51b8764048ad6eBrian Paulnodraw_triangle( GLcontext *ctx, 931cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v0, 932cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v1, 933cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v2 ) 93447489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell{ 93547489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell (void) (ctx && v0 && v1 && v2); 93647489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell} 937e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 938f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul 939f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul/* 940f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * This is used when separate specular color is enabled, but not 941fa6b2fba7ad0504a63ab262f602c6f50f336ca1bBrian Paul * texturing. We add the specular color to the primary color, 942f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * draw the triangle, then restore the original primary color. 943f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * Inefficient, but seldom needed. 944f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul */ 94546b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwellvoid _swrast_add_spec_terms_triangle( GLcontext *ctx, 94646b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell const SWvertex *v0, 94746b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell const SWvertex *v1, 94846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell const SWvertex *v2 ) 94946b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell{ 95046b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv0 = (SWvertex *)v0; /* drop const qualifier */ 95146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv1 = (SWvertex *)v1; 95246b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv2 = (SWvertex *)v2; 953f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul#if CHAN_TYPE == GL_FLOAT 954f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul GLfloat rSum, gSum, bSum; 955f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul#else 956f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul GLint rSum, gSum, bSum; 957f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul#endif 95846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell GLchan c[3][4]; 959f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* save original colors */ 96046b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( c[0], ncv0->color ); 96146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( c[1], ncv1->color ); 96246b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( c[2], ncv2->color ); 963f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v0 */ 964f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul rSum = ncv0->color[0] + ncv0->specular[0]; 965f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul gSum = ncv0->color[1] + ncv0->specular[1]; 966f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul bSum = ncv0->color[2] + ncv0->specular[2]; 967f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv0->color[0] = MIN2(rSum, CHAN_MAX); 968f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv0->color[1] = MIN2(gSum, CHAN_MAX); 969f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv0->color[2] = MIN2(bSum, CHAN_MAX); 970f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v1 */ 971f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul rSum = ncv1->color[0] + ncv1->specular[0]; 972f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul gSum = ncv1->color[1] + ncv1->specular[1]; 973f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul bSum = ncv1->color[2] + ncv1->specular[2]; 974f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv1->color[0] = MIN2(rSum, CHAN_MAX); 975f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv1->color[1] = MIN2(gSum, CHAN_MAX); 976f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv1->color[2] = MIN2(bSum, CHAN_MAX); 977f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v2 */ 978f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul rSum = ncv2->color[0] + ncv2->specular[0]; 979f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul gSum = ncv2->color[1] + ncv2->specular[1]; 980f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul bSum = ncv2->color[2] + ncv2->specular[2]; 981f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv2->color[0] = MIN2(rSum, CHAN_MAX); 982f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv2->color[1] = MIN2(gSum, CHAN_MAX); 983f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv2->color[2] = MIN2(bSum, CHAN_MAX); 984f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* draw */ 98546b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWRAST_CONTEXT(ctx)->SpecTriangle( ctx, ncv0, ncv1, ncv2 ); 986f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* restore original colors */ 98746b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( ncv0->color, c[0] ); 98846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( ncv1->color, c[1] ); 98922144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes COPY_CHAN4( ncv2->color, c[2] ); 99046b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell} 99146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell 992e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 993e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 994e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul#ifdef DEBUG 995e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 996e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul/* record the current triangle function name */ 997fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paulconst char *_mesa_triFuncName = NULL; 998e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 9992a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul#define USE(triFunc) \ 10002a182a98973edc9ecf2936b1288485bb2b3fa722Brian Pauldo { \ 10012a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul _mesa_triFuncName = #triFunc; \ 10022a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul /*printf("%s\n", _mesa_triFuncName);*/ \ 10032a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul swrast->Triangle = triFunc; \ 1004e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul} while (0) 1005e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1006e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#else 1007e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1008e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul#define USE(triFunc) swrast->Triangle = triFunc; 1009e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1010e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#endif 1011e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1012e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1013e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1014e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1015e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 1016e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Determine which triangle rendering function to use given the current 1017e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * rendering context. 1018e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 1019e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Please update the summary flag _SWRAST_NEW_TRIANGLE if you add or 1020e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * remove tests to this code. 1021e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 102222144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughesvoid 1023cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell_swrast_choose_triangle( GLcontext *ctx ) 1024e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 1025cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell SWcontext *swrast = SWRAST_CONTEXT(ctx); 1026b6bcae5698df88f7730d40004ce7ce0462e97a20Brian Paul const GLboolean rgbmode = ctx->Visual.rgbMode; 1027e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 102838f28665bf9fb5b2464738ca5074848ec2777ae1Gareth Hughes if (ctx->Polygon.CullFlag && 102947489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) { 1030e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(nodraw_triangle); 103147489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell return; 103247489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell } 103347489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell 1034e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->RenderMode==GL_RENDER) { 1035e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1036e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Polygon.SmoothFlag) { 103745bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_set_aa_triangle_function(ctx); 1038cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell ASSERT(swrast->Triangle); 1039e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return; 1040e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1041e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1042b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul /* special case for occlusion testing */ 1043b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul if ((ctx->Depth.OcclusionTest || ctx->Occlusion.Active) && 1044e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Test && 1045e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Mask == GL_FALSE && 1046e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Func == GL_LESS && 1047e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell !ctx->Stencil.Enabled) { 1048e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if ((rgbmode && 104922144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes ctx->Color.ColorMask[0] == 0 && 105022144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes ctx->Color.ColorMask[1] == 0 && 1051e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Color.ColorMask[2] == 0 && 1052e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Color.ColorMask[3] == 0) 1053e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell || 1054e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell (!rgbmode && ctx->Color.IndexMask == 0)) { 1055e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(occlusion_zless_triangle); 1056e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return; 1057e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1058e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1059e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1060853bda3e7c4dfa7d8cc462729f6a3dce89e44963Brian Paul if (ctx->Texture._EnabledCoordUnits || ctx->FragmentProgram.Enabled) { 1061e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* Ugh, we do a _lot_ of tests to pick the best textured tri func */ 1062e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul const struct gl_texture_object *texObj2D; 1063e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul const struct gl_texture_image *texImg; 106438e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul GLenum minFilter, magFilter, envMode; 106538e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul GLint format; 1066e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul texObj2D = ctx->Texture.Unit[0].Current2D; 106718fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell texImg = texObj2D ? texObj2D->Image[0][texObj2D->BaseLevel] : NULL; 106838e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul format = texImg ? texImg->TexFormat->MesaFormat : -1; 1069e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul minFilter = texObj2D ? texObj2D->MinFilter : (GLenum) 0; 1070e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul magFilter = texObj2D ? texObj2D->MagFilter : (GLenum) 0; 1071e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul envMode = ctx->Texture.Unit[0].EnvMode; 1072e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1073c0fc0d4e5f5c246fc2459348a3d114b232d0c545Brian Paul /* First see if we can use an optimized 2-D texture function */ 107436a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul if (ctx->Texture._EnabledCoordUnits == 1 1075f386f73f9e4054a750d453fa2f5449c2f1d2e242Brian Paul && !ctx->FragmentProgram.Enabled 10768afe7de8deaf3c9613fd68b344de8c52b02b1879Brian Paul && ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT 1077e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && texObj2D->WrapS==GL_REPEAT 1078e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && texObj2D->WrapT==GL_REPEAT 1079887e2cf01a99f7fe1b7c94320b7bdbbf0d6ad2f8Brian Paul && texObj2D->_IsPowerOfTwo 1080e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && texImg->Border==0 1081681b8c9d1ba06c8c82e687a5ced369b72e6b1eb9Brian Paul && texImg->Width == texImg->RowStride 108238e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul && (format == MESA_FORMAT_RGB || format == MESA_FORMAT_RGBA) 1083e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && minFilter == magFilter 1084e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Light.Model.ColorControl == GL_SINGLE_COLOR 1085e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Texture.Unit[0].EnvMode != GL_COMBINE_EXT) { 1086e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Hint.PerspectiveCorrection==GL_FASTEST) { 1087e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul if (minFilter == GL_NEAREST 10889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul && format == MESA_FORMAT_RGB 1089e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && (envMode == GL_REPLACE || envMode == GL_DECAL) 10909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul && ((swrast->_RasterMask == (DEPTH_BIT | TEXTURE_BIT) 1091e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Depth.Func == GL_LESS 1092e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Depth.Mask == GL_TRUE) 10939bf68ad963ba92b5d1e725f965979042495a5313Brian Paul || swrast->_RasterMask == TEXTURE_BIT) 1094e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Polygon.StippleFlag == GL_FALSE) { 10959bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (swrast->_RasterMask == (DEPTH_BIT | TEXTURE_BIT)) { 1096e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(simple_z_textured_triangle); 1097e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1098e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1099e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(simple_textured_triangle); 1100e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1101e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1102e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1103e0bafefd7ac911ec101876f4ea0d201309e841f2Brian Paul#if (CHAN_BITS == 16 || CHAN_BITS == 32) 110496385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(general_textured_triangle); 110596385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#else 110696385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(affine_textured_triangle); 1107f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul#endif 1108e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1109e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1110e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1111e0bafefd7ac911ec101876f4ea0d201309e841f2Brian Paul#if (CHAN_BITS == 16 || CHAN_BITS == 32) 111296385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(general_textured_triangle); 111396385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#else 111496385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(persp_textured_triangle); 111596385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#endif 1116e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1117e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1118e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 111931f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul /* general case textured triangles */ 112036a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul if (ctx->Texture._EnabledCoordUnits > 1) { 112131f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul USE(multitextured_triangle); 1122e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1123e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 112431f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul USE(general_textured_triangle); 1125e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1126e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1127e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1128e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 112936a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul ASSERT(!ctx->Texture._EnabledCoordUnits); 1130e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Light.ShadeModel==GL_SMOOTH) { 1131e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* smooth shaded, no texturing, stippled or some raster ops */ 1132e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (rgbmode) { 1133e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(smooth_rgba_triangle); 1134e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1135e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1136e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(smooth_ci_triangle); 1137e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1138e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1139e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1140e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* flat shaded, no texturing, stippled or some raster ops */ 1141e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (rgbmode) { 1142e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(flat_rgba_triangle); 1143e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1144e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1145e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(flat_ci_triangle); 1146e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1147e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1148e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1149e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1150e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else if (ctx->RenderMode==GL_FEEDBACK) { 115145bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_feedback_triangle); 1152e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1153e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1154e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* GL_SELECT mode */ 115545bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_select_triangle); 1156e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1157e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 1158