s_triangle.c revision e6e0ba781b0a6a1b8747cae49ca622a6a61b1bf8
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. 195e6e0ba781b0a6a1b8747cae49ca622a6a61b1bf8Brian Paul * Depth buffer bits must be <= sizeof(DEFAULT_SOFTWARE_DEPTH_TYPE) 19622144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 197e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * No fog. 198e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 199cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME simple_z_textured_triangle 200e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 201e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 202e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_INT_TEX 1 203e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define S_SCALE twidth 204e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define T_SCALE theight 2059bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 206e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define SETUP_CODE \ 207709892459922a32096fe9dd8261d0d92337bb02fKeith Whitwell SWcontext *swrast = SWRAST_CONTEXT(ctx); \ 208a852378a6289d154364dde440f89a39bbfc33e2dBrian Paul struct gl_texture_object *obj = ctx->Texture.Unit[0].Current2D; \ 2092ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const GLint b = obj->BaseLevel; \ 21018fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \ 21118fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \ 212230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const GLint twidth_log2 = obj->Image[0][b]->WidthLog2; \ 21318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLchan *texture = (const GLchan *) obj->Image[0][b]->Data; \ 21418fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLint smask = obj->Image[0][b]->Width - 1; \ 21518fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLint tmask = obj->Image[0][b]->Height - 1; \ 216e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (!texture) { \ 2178e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul /* this shouldn't happen */ \ 2188e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 219e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 220e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2219bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define RENDER_SPAN( span ) \ 2229bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; \ 22377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] -= FIXED_HALF; /* off-by-one error? */ \ 22477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] -= FIXED_HALF; \ 22577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul for (i = 0; i < span.end; i++) { \ 22677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul const GLdepth z = FixedToDepth(span.z); \ 2279bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (z < zRow[i]) { \ 22877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint s = FixedToInt(span.intTex[0]) & smask; \ 22977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint t = FixedToInt(span.intTex[1]) & tmask; \ 2309bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << twidth_log2) + s; \ 2319bf68ad963ba92b5d1e725f965979042495a5313Brian Paul pos = pos + pos + pos; /* multiply by 3 */ \ 23277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][RCOMP] = texture[pos]; \ 23377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][GCOMP] = texture[pos+1]; \ 23477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->rgb[i][BCOMP] = texture[pos+2]; \ 2359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul zRow[i] = z; \ 23677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->mask[i] = 1; \ 2379bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 2389bf68ad963ba92b5d1e725f965979042495a5313Brian Paul else { \ 23977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->mask[i] = 0; \ 2409bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 24177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] += span.intTexStep[0]; \ 24277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] += span.intTexStep[1]; \ 24377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.z += span.zStep; \ 2449bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 24577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul (*swrast->Driver.WriteRGBSpan)(ctx, span.end, span.x, span.y, \ 24677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul (CONST GLchan (*)[3]) span.array->rgb,\ 24777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.array->mask ); 248e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 249cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 250e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 251e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 252f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul#if CHAN_TYPE != GL_FLOAT 253e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2549bf68ad963ba92b5d1e725f965979042495a5313Brian Paulstruct affine_info 255e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 2569bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum filter; 2579bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum format; 2589bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum envmode; 2599bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint smask, tmask; 2609bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint twidth_log2; 2619bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *texture; 262fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul GLfixed er, eg, eb, ea; 2639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint tbytesline, tsize; 2649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul}; 265cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell 2667152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul 2677152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul/* This function can handle GL_NEAREST or GL_LINEAR sampling of 2D RGB or RGBA 2687152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul * textures with GL_REPLACE, GL_MODULATE, GL_BLEND, GL_DECAL or GL_ADD 2697152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul * texture env modes. 2707152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul */ 27171340e861edf35bfdeb536718cd230fc33c41ee2Brian Paulstatic INLINE void 27257d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paulaffine_span(GLcontext *ctx, struct sw_span *span, 2739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct affine_info *info) 2749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul{ 2757152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLchan sample[4]; /* the filtered texture sample */ 276e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 277fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul /* Instead of defining a function for each mode, a test is done 278fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * between the outer and inner loops. This is to reduce code size 279fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * and complexity. Observe that an optimizing compiler kills 280fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST). 281fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul */ 282e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 283bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul#define NEAREST_RGB \ 2847152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[RCOMP] = tex00[RCOMP]; \ 2857152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[GCOMP] = tex00[GCOMP]; \ 2867152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[BCOMP] = tex00[BCOMP]; \ 2877152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[ACOMP] = CHAN_MAX 288e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define LINEAR_RGB \ 2907152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \ 291bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT; \ 2927152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \ 293bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT; \ 2947152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \ 295bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT; \ 2967152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[ACOMP] = CHAN_MAX 297bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 2987152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul#define NEAREST_RGBA COPY_CHAN4(sample, tex00) 299e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 3009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define LINEAR_RGBA \ 3017152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \ 302bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT;\ 3037152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \ 304bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT;\ 3057152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \ 306bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT;\ 3077152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul sample[ACOMP] = (ti * (si * tex00[3] + sf * tex01[3]) + \ 308bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul tf * (si * tex10[3] + sf * tex11[3])) >> 2 * FIXED_SHIFT 309bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 310fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul#define MODULATE \ 3117152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = span->red * (sample[RCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3127152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = span->green * (sample[GCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3137152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = span->blue * (sample[BCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3147152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1u) >> (FIXED_SHIFT + 8) 3159bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 3169bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define DECAL \ 3177152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->red + \ 3187152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[RCOMP] << FIXED_SHIFT)) \ 319bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 3207152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->green + \ 3217152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[GCOMP] << FIXED_SHIFT)) \ 322bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 3237152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->blue + \ 3247152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[BCOMP] << FIXED_SHIFT)) \ 325bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 326bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul dest[ACOMP] = FixedToInt(span->alpha) 3279bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 3289bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define BLEND \ 3297152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = ((CHAN_MAX - sample[RCOMP]) * span->red \ 3307152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[RCOMP] + 1) * info->er) >> (FIXED_SHIFT + 8); \ 3317152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = ((CHAN_MAX - sample[GCOMP]) * span->green \ 3327152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[GCOMP] + 1) * info->eg) >> (FIXED_SHIFT + 8); \ 3337152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = ((CHAN_MAX - sample[BCOMP]) * span->blue \ 3347152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[BCOMP] + 1) * info->eb) >> (FIXED_SHIFT + 8); \ 3357152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8) 336bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 3377152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul#define REPLACE COPY_CHAN4(dest, sample) 338e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 3399bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define ADD \ 3407152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul { \ 3417152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint rSum = FixedToInt(span->red) + (GLint) sample[RCOMP]; \ 3427152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint gSum = FixedToInt(span->green) + (GLint) sample[GCOMP]; \ 3437152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint bSum = FixedToInt(span->blue) + (GLint) sample[BCOMP]; \ 3447152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = MIN2(rSum, CHAN_MAX); \ 3457152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = MIN2(gSum, CHAN_MAX); \ 3467152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = MIN2(bSum, CHAN_MAX); \ 3477152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8); \ 3487152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul } 349e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 350e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* shortcuts */ 351e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 35235e5e89f5614ebb032479b02dec888563f829b30Brian Paul#define NEAREST_RGB_REPLACE \ 35335e5e89f5614ebb032479b02dec888563f829b30Brian Paul NEAREST_RGB; \ 35435e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[0] = sample[0]; \ 35535e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[1] = sample[1]; \ 35635e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[2] = sample[2]; \ 35735e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[3] = FixedToInt(span->alpha); 358e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 359bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul#define NEAREST_RGBA_REPLACE COPY_CHAN4(dest, tex00) 360e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 36133170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_NEAREST(DO_TEX,COMP) \ 36257d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 36333170eeb185f5fe766374a749464497cdfab6931Brian Paul /* Isn't it necessary to use FixedFloor below?? */ \ 3649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint s = FixedToInt(span->intTex[0]) & info->smask; \ 3659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint t = FixedToInt(span->intTex[1]) & info->tmask; \ 3669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 3679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 3689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul DO_TEX; \ 3699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->red += span->redStep; \ 3709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->green += span->greenStep; \ 3719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->blue += span->blueStep; \ 3729bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->alpha += span->alphaStep; \ 3739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] += span->intTexStep[0]; \ 3749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] += span->intTexStep[1]; \ 3759bf68ad963ba92b5d1e725f965979042495a5313Brian Paul dest += 4; \ 376e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 377e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 37833170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_LINEAR(DO_TEX,COMP) \ 37957d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 38033170eeb185f5fe766374a749464497cdfab6931Brian Paul /* Isn't it necessary to use FixedFloor below?? */ \ 3819bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint s = FixedToInt(span->intTex[0]) & info->smask; \ 3829bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint t = FixedToInt(span->intTex[1]) & info->tmask; \ 38333170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed sf = span->intTex[0] & FIXED_FRAC_MASK; \ 38433170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed tf = span->intTex[1] & FIXED_FRAC_MASK; \ 38533170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed si = FIXED_FRAC_MASK - sf; \ 38633170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed ti = FIXED_FRAC_MASK - tf; \ 3879bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 3889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 3899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex10 = tex00 + info->tbytesline; \ 3909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex01 = tex00 + COMP; \ 3919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex11 = tex10 + COMP; \ 3929bf68ad963ba92b5d1e725f965979042495a5313Brian Paul (void) ti; \ 3939bf68ad963ba92b5d1e725f965979042495a5313Brian Paul (void) si; \ 3949bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (t == info->tmask) { \ 3959bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex10 -= info->tsize; \ 3969bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex11 -= info->tsize; \ 3979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 3989bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (s == info->smask) { \ 3999bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex01 -= info->tbytesline; \ 4009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex11 -= info->tbytesline; \ 4019bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 4029bf68ad963ba92b5d1e725f965979042495a5313Brian Paul DO_TEX; \ 4039bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->red += span->redStep; \ 4049bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->green += span->greenStep; \ 4059bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->blue += span->blueStep; \ 4069bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->alpha += span->alphaStep; \ 4079bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] += span->intTexStep[0]; \ 4089bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] += span->intTexStep[1]; \ 4099bf68ad963ba92b5d1e725f965979042495a5313Brian Paul dest += 4; \ 410e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 411e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 4129bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 4139bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; 41477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLchan *dest = span->array->rgba[0]; 41557d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul 4169bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] -= FIXED_HALF; 4179bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] -= FIXED_HALF; 4189bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->filter) { 4199bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_NEAREST: 4209bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->format) { 4219bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGB: 4229bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4239bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 42433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;MODULATE,3); 4259bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4269bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 4279bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 42833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB_REPLACE,3); 4299bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4309bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 43133170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;BLEND,3); 4329bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4339bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 43433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;ADD,3); 4359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4369bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4374663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode in SPAN_LINEAR"); 4384663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4399bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4409bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4419bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGBA: 4429bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch(info->envmode) { 4439bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 44433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;MODULATE,4); 4459bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4469bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 44733170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;DECAL,4); 4489bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4499bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 45033170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;BLEND,4); 4519bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4529bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 45333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;ADD,4); 4549bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4559bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 45633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA_REPLACE,4); 4579bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4589bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4594663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (2) in SPAN_LINEAR"); 4604663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4619bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 4669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_LINEAR: 4679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] -= FIXED_HALF; 4689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] -= FIXED_HALF; 4699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->format) { 4709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGB: 4719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4729bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 47333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;MODULATE,3); 4749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4759bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 4769bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 47733170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;REPLACE,3); 4789bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4799bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 48033170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;BLEND,3); 4819bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4829bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 48333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;ADD,3); 4849bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4859bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4864663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (3) in SPAN_LINEAR"); 4874663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGBA: 4919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4929bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 49333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;MODULATE,4); 4949bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4959bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 49633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;DECAL,4); 4979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4989bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 49933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;BLEND,4); 5009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5019bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 50233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;ADD,4); 5039bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5049bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 50533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;REPLACE,4); 5069bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5079bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 5084663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (4) in SPAN_LINEAR"); 5094663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 5104663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul } 5114663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul break; 5129bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 5139bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5149bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 515733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul span->interpMask &= ~SPAN_RGBA; 5162a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul ASSERT(span->arrayMask & SPAN_RGBA); 51745bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 518e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 51933170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_NEAREST 52033170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_LINEAR 521e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 522e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 523e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 524e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 525e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 5269bf68ad963ba92b5d1e725f965979042495a5313Brian Paul * Render an RGB/RGBA textured triangle without perspective correction. 5279bf68ad963ba92b5d1e725f965979042495a5313Brian Paul */ 528cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME affine_textured_triangle 5299bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_Z 1 5309bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_FOG 1 5319bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 5329bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_RGB 1 5339bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_ALPHA 1 5349bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_INT_TEX 1 5359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define S_SCALE twidth 5369bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define T_SCALE theight 5379bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 538571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul#define SETUP_CODE \ 539571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul struct affine_info info; \ 5409bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct gl_texture_unit *unit = ctx->Texture.Unit+0; \ 5419bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct gl_texture_object *obj = unit->Current2D; \ 5422ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const GLint b = obj->BaseLevel; \ 54318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \ 54418fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \ 545230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.texture = (const GLchan *) obj->Image[0][b]->Data; \ 546230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.twidth_log2 = obj->Image[0][b]->WidthLog2; \ 54718fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.smask = obj->Image[0][b]->Width - 1; \ 54818fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tmask = obj->Image[0][b]->Height - 1; \ 549230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.format = obj->Image[0][b]->Format; \ 5509bf68ad963ba92b5d1e725f965979042495a5313Brian Paul info.filter = obj->MinFilter; \ 5519bf68ad963ba92b5d1e725f965979042495a5313Brian Paul info.envmode = unit->EnvMode; \ 55277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.arrayMask |= SPAN_RGBA; \ 5539bf68ad963ba92b5d1e725f965979042495a5313Brian Paul \ 5549bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (info.envmode == GL_BLEND) { \ 5559bf68ad963ba92b5d1e725f965979042495a5313Brian Paul /* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \ 556fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \ 557fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \ 558fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \ 559fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \ 5609bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 5619bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (!info.texture) { \ 5629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul /* this shouldn't happen */ \ 5639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul return; \ 5649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 5659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul \ 5669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info.format) { \ 5679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ALPHA: \ 5689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_LUMINANCE: \ 5699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_INTENSITY: \ 570230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.tbytesline = obj->Image[0][b]->Width; \ 5719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5729bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_LUMINANCE_ALPHA: \ 57318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 2; \ 5749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5759bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGB: \ 57618fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 3; \ 5779bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5789bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_RGBA: \ 57918fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 4; \ 5809bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5819bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: \ 5829bf68ad963ba92b5d1e725f965979042495a5313Brian Paul _mesa_problem(NULL, "Bad texture format in affine_texture_triangle");\ 5839bf68ad963ba92b5d1e725f965979042495a5313Brian Paul return; \ 5849bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 58518fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tsize = obj->Image[0][b]->Height * info.tbytesline; 5869bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 58777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul#define RENDER_SPAN( span ) affine_span(ctx, &span, &info); 5889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 5899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#include "s_tritemp.h" 5909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 591f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul 5929bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 59333170eeb185f5fe766374a749464497cdfab6931Brian Paulstruct persp_info 594e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 59533170eeb185f5fe766374a749464497cdfab6931Brian Paul GLenum filter; 59633170eeb185f5fe766374a749464497cdfab6931Brian Paul GLenum format; 59733170eeb185f5fe766374a749464497cdfab6931Brian Paul GLenum envmode; 59833170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint smask, tmask; 59933170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint twidth_log2; 60033170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *texture; 601fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul GLfixed er, eg, eb, ea; /* texture env color */ 60233170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint tbytesline, tsize; 60333170eeb185f5fe766374a749464497cdfab6931Brian Paul}; 604e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 605f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul 60671340e861edf35bfdeb536718cd230fc33c41ee2Brian Paulstatic INLINE void 60757d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paulfast_persp_span(GLcontext *ctx, struct sw_span *span, 60833170eeb185f5fe766374a749464497cdfab6931Brian Paul struct persp_info *info) 60933170eeb185f5fe766374a749464497cdfab6931Brian Paul{ 6107152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLchan sample[4]; /* the filtered texture sample */ 6119bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 61233170eeb185f5fe766374a749464497cdfab6931Brian Paul /* Instead of defining a function for each mode, a test is done 61333170eeb185f5fe766374a749464497cdfab6931Brian Paul * between the outer and inner loops. This is to reduce code size 61433170eeb185f5fe766374a749464497cdfab6931Brian Paul * and complexity. Observe that an optimizing compiler kills 61533170eeb185f5fe766374a749464497cdfab6931Brian Paul * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST). 61633170eeb185f5fe766374a749464497cdfab6931Brian Paul */ 61733170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_NEAREST(DO_TEX,COMP) \ 61857d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 61933170eeb185f5fe766374a749464497cdfab6931Brian Paul GLdouble invQ = tex_coord[2] ? \ 62033170eeb185f5fe766374a749464497cdfab6931Brian Paul (1.0 / tex_coord[2]) : 1.0; \ 6217c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ); \ 6227c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ); \ 62333170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint s = IFLOOR(s_tmp) & info->smask; \ 62433170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint t = IFLOOR(t_tmp) & info->tmask; \ 62533170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 62633170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 62733170eeb185f5fe766374a749464497cdfab6931Brian Paul DO_TEX; \ 62833170eeb185f5fe766374a749464497cdfab6931Brian Paul span->red += span->redStep; \ 62933170eeb185f5fe766374a749464497cdfab6931Brian Paul span->green += span->greenStep; \ 63033170eeb185f5fe766374a749464497cdfab6931Brian Paul span->blue += span->blueStep; \ 63133170eeb185f5fe766374a749464497cdfab6931Brian Paul span->alpha += span->alphaStep; \ 63233170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[0] += tex_step[0]; \ 63333170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[1] += tex_step[1]; \ 63433170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[2] += tex_step[2]; \ 63533170eeb185f5fe766374a749464497cdfab6931Brian Paul dest += 4; \ 63633170eeb185f5fe766374a749464497cdfab6931Brian Paul } 637e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 63833170eeb185f5fe766374a749464497cdfab6931Brian Paul#define SPAN_LINEAR(DO_TEX,COMP) \ 63957d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 64033170eeb185f5fe766374a749464497cdfab6931Brian Paul GLdouble invQ = tex_coord[2] ? \ 64133170eeb185f5fe766374a749464497cdfab6931Brian Paul (1.0 / tex_coord[2]) : 1.0; \ 6427c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ); \ 6437c4268176eaaeb45003db4d5042a518b84c9f6dcKarl Schultz GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ); \ 644bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul GLfixed s_fix = FloatToFixed(s_tmp) - FIXED_HALF; \ 645bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul GLfixed t_fix = FloatToFixed(t_tmp) - FIXED_HALF; \ 64633170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint s = FixedToInt(FixedFloor(s_fix)) & info->smask; \ 64733170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint t = FixedToInt(FixedFloor(t_fix)) & info->tmask; \ 648fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul GLfixed sf = s_fix & FIXED_FRAC_MASK; \ 649fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul GLfixed tf = t_fix & FIXED_FRAC_MASK; \ 65033170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed si = FIXED_FRAC_MASK - sf; \ 65133170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfixed ti = FIXED_FRAC_MASK - tf; \ 65233170eeb185f5fe766374a749464497cdfab6931Brian Paul GLint pos = (t << info->twidth_log2) + s; \ 65333170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 65433170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex10 = tex00 + info->tbytesline; \ 65533170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex01 = tex00 + COMP; \ 65633170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex11 = tex10 + COMP; \ 65733170eeb185f5fe766374a749464497cdfab6931Brian Paul (void) ti; \ 65833170eeb185f5fe766374a749464497cdfab6931Brian Paul (void) si; \ 65933170eeb185f5fe766374a749464497cdfab6931Brian Paul if (t == info->tmask) { \ 66033170eeb185f5fe766374a749464497cdfab6931Brian Paul tex10 -= info->tsize; \ 66133170eeb185f5fe766374a749464497cdfab6931Brian Paul tex11 -= info->tsize; \ 66233170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 66333170eeb185f5fe766374a749464497cdfab6931Brian Paul if (s == info->smask) { \ 66433170eeb185f5fe766374a749464497cdfab6931Brian Paul tex01 -= info->tbytesline; \ 66533170eeb185f5fe766374a749464497cdfab6931Brian Paul tex11 -= info->tbytesline; \ 66633170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 66733170eeb185f5fe766374a749464497cdfab6931Brian Paul DO_TEX; \ 66833170eeb185f5fe766374a749464497cdfab6931Brian Paul span->red += span->redStep; \ 66933170eeb185f5fe766374a749464497cdfab6931Brian Paul span->green += span->greenStep; \ 67033170eeb185f5fe766374a749464497cdfab6931Brian Paul span->blue += span->blueStep; \ 67133170eeb185f5fe766374a749464497cdfab6931Brian Paul span->alpha += span->alphaStep; \ 67233170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[0] += tex_step[0]; \ 67333170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[1] += tex_step[1]; \ 67433170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[2] += tex_step[2]; \ 67533170eeb185f5fe766374a749464497cdfab6931Brian Paul dest += 4; \ 67633170eeb185f5fe766374a749464497cdfab6931Brian Paul } 677e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 67833170eeb185f5fe766374a749464497cdfab6931Brian Paul GLuint i; 67933170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfloat tex_coord[3], tex_step[3]; 68077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLchan *dest = span->array->rgba[0]; 68157d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul 68231f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_coord[0] = span->tex[0][0] * (info->smask + 1); 68331f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_step[0] = span->texStepX[0][0] * (info->smask + 1); 68431f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_coord[1] = span->tex[0][1] * (info->tmask + 1); 68531f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_step[1] = span->texStepX[0][1] * (info->tmask + 1); 68633170eeb185f5fe766374a749464497cdfab6931Brian Paul /* span->tex[0][2] only if 3D-texturing, here only 2D */ 68731f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_coord[2] = span->tex[0][3]; 68831f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul tex_step[2] = span->texStepX[0][3]; 689e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 69033170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->filter) { 69133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_NEAREST: 69233170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->format) { 69333170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGB: 69433170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 69533170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 69633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;MODULATE,3); 69733170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 69833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 69933170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 70033170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB_REPLACE,3); 70133170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70233170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 70333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;BLEND,3); 70433170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70533170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 70633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;ADD,3); 70733170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70833170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7094663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (5) in SPAN_LINEAR"); 7104663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 71133170eeb185f5fe766374a749464497cdfab6931Brian Paul } 71233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 71333170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGBA: 71433170eeb185f5fe766374a749464497cdfab6931Brian Paul switch(info->envmode) { 71533170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 71633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;MODULATE,4); 71733170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 71833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 71933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;DECAL,4); 72033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 72233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;BLEND,4); 72333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 72533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;ADD,4); 72633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 72833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA_REPLACE,4); 72933170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 73033170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7314663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (6) in SPAN_LINEAR"); 7324663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 73333170eeb185f5fe766374a749464497cdfab6931Brian Paul } 73433170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 73533170eeb185f5fe766374a749464497cdfab6931Brian Paul } 73633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 73733170eeb185f5fe766374a749464497cdfab6931Brian Paul 73833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_LINEAR: 73933170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->format) { 74033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGB: 74133170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 74233170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 74333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;MODULATE,3); 74433170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 74533170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 74633170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 74733170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;REPLACE,3); 74833170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 74933170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 75033170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;BLEND,3); 75133170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 75233170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 75333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;ADD,3); 75433170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 75533170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7564663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (7) in SPAN_LINEAR"); 7574663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 75833170eeb185f5fe766374a749464497cdfab6931Brian Paul } 75933170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 76033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_RGBA: 76133170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 76233170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 76333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;MODULATE,4); 76433170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 76533170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 76633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;DECAL,4); 76733170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 76833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 76933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;BLEND,4); 77033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 77233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;ADD,4); 77333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 77533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;REPLACE,4); 77633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77733170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7784663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (8) in SPAN_LINEAR"); 7794663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 78033170eeb185f5fe766374a749464497cdfab6931Brian Paul } 78133170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 78233170eeb185f5fe766374a749464497cdfab6931Brian Paul } 78333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 784e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 78533170eeb185f5fe766374a749464497cdfab6931Brian Paul 7862a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul ASSERT(span->arrayMask & SPAN_RGBA); 78745bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 788e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 78933170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_NEAREST 79033170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_LINEAR 791e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 792e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 793e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 794e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 795e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render an perspective corrected RGB/RGBA textured triangle. 796e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * The Q (aka V in Mesa) coordinate must be zero such that the divide 797e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * by interpolated Q/W comes out right. 798e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 799e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 800cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME persp_textured_triangle 801e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 80209da0b8e6621a831e3eeb9381430f2bed18a22adBrian Paul#define INTERP_W 1 80395e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 804e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 805e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 806e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 807e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_TEX 1 8089bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 809571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul#define SETUP_CODE \ 810571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul struct persp_info info; \ 8112ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const struct gl_texture_unit *unit = ctx->Texture.Unit+0; \ 8122ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const struct gl_texture_object *obj = unit->Current2D; \ 8132ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const GLint b = obj->BaseLevel; \ 814230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.texture = (const GLchan *) obj->Image[0][b]->Data; \ 815230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.twidth_log2 = obj->Image[0][b]->WidthLog2; \ 81618fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.smask = obj->Image[0][b]->Width - 1; \ 81718fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tmask = obj->Image[0][b]->Height - 1; \ 818230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.format = obj->Image[0][b]->Format; \ 81933170eeb185f5fe766374a749464497cdfab6931Brian Paul info.filter = obj->MinFilter; \ 82033170eeb185f5fe766374a749464497cdfab6931Brian Paul info.envmode = unit->EnvMode; \ 82133170eeb185f5fe766374a749464497cdfab6931Brian Paul \ 82233170eeb185f5fe766374a749464497cdfab6931Brian Paul if (info.envmode == GL_BLEND) { \ 82333170eeb185f5fe766374a749464497cdfab6931Brian Paul /* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \ 824fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \ 825fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \ 826fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \ 827fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \ 82833170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 82933170eeb185f5fe766374a749464497cdfab6931Brian Paul if (!info.texture) { \ 83033170eeb185f5fe766374a749464497cdfab6931Brian Paul /* this shouldn't happen */ \ 8318e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 832e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } \ 83333170eeb185f5fe766374a749464497cdfab6931Brian Paul \ 83433170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info.format) { \ 835e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_ALPHA: \ 836e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_LUMINANCE: \ 837e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_INTENSITY: \ 838230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul info.tbytesline = obj->Image[0][b]->Width; \ 83933170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 840e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_LUMINANCE_ALPHA: \ 84118fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 2; \ 84233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 843e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_RGB: \ 84418fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 3; \ 84533170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 846e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell case GL_RGBA: \ 84718fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tbytesline = obj->Image[0][b]->Width * 4; \ 84833170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 849e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell default: \ 850fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul _mesa_problem(NULL, "Bad texture format in persp_textured_triangle");\ 85133170eeb185f5fe766374a749464497cdfab6931Brian Paul return; \ 85233170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 85318fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell info.tsize = obj->Image[0][b]->Height * info.tbytesline; 854e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 8557956292a765910077f50352d7cd0174e1e66d26cBrian Paul#define RENDER_SPAN( span ) \ 85677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.interpMask &= ~SPAN_RGBA; \ 85777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.arrayMask |= SPAN_RGBA; \ 85877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul fast_persp_span(ctx, &span, &info); 859e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 860e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 861e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 862fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul 86396385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#endif /* CHAN_BITS != GL_FLOAT */ 86496385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul 8659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul/* 869e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a smooth-shaded, textured, RGBA triangle. 8709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul * Interpolate S,T,R with perspective correction, w/out mipmapping. 871e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 872cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME general_textured_triangle 873e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 87454e92e8420a028f07b0971ee8aa93be9b4214579Brian Paul#define INTERP_W 1 87595e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 876e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 877e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 878e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_SPEC 1 879e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 880e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_TEX 1 88145bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_texture_span(ctx, &span); 882e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 883e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 884e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 885f1e236987829393c81dc86ea19cb49eefe190317Brian Paul 886e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 887e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * This is the big one! 88831f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul * Interpolate Z, RGB, Alpha, specular, fog, and N sets of texture coordinates. 889e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Yup, it's slow. 890e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 891cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME multitextured_triangle 892e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 89354e92e8420a028f07b0971ee8aa93be9b4214579Brian Paul#define INTERP_W 1 89495e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul#define INTERP_FOG 1 895e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 896e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 897e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 8989bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_SPEC 1 899e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_MULTITEX 1 90045bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_texture_span(ctx, &span); 901e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 902e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 903e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 904e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 905b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul/* 906b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul * Special tri function for occlusion testing 907b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul */ 908cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME occlusion_zless_triangle 909e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DO_OCCLUSION_TEST 910e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 911e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 912b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul#define SETUP_CODE \ 913b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul if (ctx->OcclusionResult && !ctx->Occlusion.Active) { \ 914b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul return; \ 915cdf2da368d180205df3573697b51b8764048ad6eBrian Paul } 9169bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define RENDER_SPAN( span ) \ 9179bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; \ 91877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul for (i = 0; i < span.end; i++) { \ 91977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLdepth z = FixedToDepth(span.z); \ 9209bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (z < zRow[i]) { \ 9219bf68ad963ba92b5d1e725f965979042495a5313Brian Paul ctx->OcclusionResult = GL_TRUE; \ 922b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul ctx->Occlusion.PassedCounter++; \ 9239bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 92477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.z += span.zStep; \ 925e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 926e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 927e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 928cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 929cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 930cdf2da368d180205df3573697b51b8764048ad6eBrian Paulstatic void 931cdf2da368d180205df3573697b51b8764048ad6eBrian Paulnodraw_triangle( GLcontext *ctx, 932cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v0, 933cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v1, 934cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v2 ) 93547489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell{ 93647489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell (void) (ctx && v0 && v1 && v2); 93747489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell} 938e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 939f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul 940f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul/* 941f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * This is used when separate specular color is enabled, but not 942fa6b2fba7ad0504a63ab262f602c6f50f336ca1bBrian Paul * texturing. We add the specular color to the primary color, 943f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * draw the triangle, then restore the original primary color. 944f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * Inefficient, but seldom needed. 945f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul */ 94646b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwellvoid _swrast_add_spec_terms_triangle( GLcontext *ctx, 94746b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell const SWvertex *v0, 94846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell const SWvertex *v1, 94946b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell const SWvertex *v2 ) 95046b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell{ 95146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv0 = (SWvertex *)v0; /* drop const qualifier */ 95246b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv1 = (SWvertex *)v1; 95346b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv2 = (SWvertex *)v2; 954f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul#if CHAN_TYPE == GL_FLOAT 955f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul GLfloat rSum, gSum, bSum; 956f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul#else 957f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul GLint rSum, gSum, bSum; 958f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul#endif 95946b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell GLchan c[3][4]; 960f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* save original colors */ 96146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( c[0], ncv0->color ); 96246b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( c[1], ncv1->color ); 96346b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( c[2], ncv2->color ); 964f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v0 */ 965f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul rSum = ncv0->color[0] + ncv0->specular[0]; 966f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul gSum = ncv0->color[1] + ncv0->specular[1]; 967f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul bSum = ncv0->color[2] + ncv0->specular[2]; 968f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv0->color[0] = MIN2(rSum, CHAN_MAX); 969f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv0->color[1] = MIN2(gSum, CHAN_MAX); 970f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv0->color[2] = MIN2(bSum, CHAN_MAX); 971f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v1 */ 972f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul rSum = ncv1->color[0] + ncv1->specular[0]; 973f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul gSum = ncv1->color[1] + ncv1->specular[1]; 974f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul bSum = ncv1->color[2] + ncv1->specular[2]; 975f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv1->color[0] = MIN2(rSum, CHAN_MAX); 976f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv1->color[1] = MIN2(gSum, CHAN_MAX); 977f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv1->color[2] = MIN2(bSum, CHAN_MAX); 978f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v2 */ 979f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul rSum = ncv2->color[0] + ncv2->specular[0]; 980f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul gSum = ncv2->color[1] + ncv2->specular[1]; 981f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul bSum = ncv2->color[2] + ncv2->specular[2]; 982f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv2->color[0] = MIN2(rSum, CHAN_MAX); 983f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv2->color[1] = MIN2(gSum, CHAN_MAX); 984f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul ncv2->color[2] = MIN2(bSum, CHAN_MAX); 985f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* draw */ 98646b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWRAST_CONTEXT(ctx)->SpecTriangle( ctx, ncv0, ncv1, ncv2 ); 987f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* restore original colors */ 98846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( ncv0->color, c[0] ); 98946b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell COPY_CHAN4( ncv1->color, c[1] ); 99022144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes COPY_CHAN4( ncv2->color, c[2] ); 99146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell} 99246b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell 993e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 994e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 995e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul#ifdef DEBUG 996e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 997e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul/* record the current triangle function name */ 998fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paulconst char *_mesa_triFuncName = NULL; 999e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 10002a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul#define USE(triFunc) \ 10012a182a98973edc9ecf2936b1288485bb2b3fa722Brian Pauldo { \ 10022a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul _mesa_triFuncName = #triFunc; \ 10032a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul /*printf("%s\n", _mesa_triFuncName);*/ \ 10042a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul swrast->Triangle = triFunc; \ 1005e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul} while (0) 1006e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1007e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#else 1008e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1009e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul#define USE(triFunc) swrast->Triangle = triFunc; 1010e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1011e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#endif 1012e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1013e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1014e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1015e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1016e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 1017e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Determine which triangle rendering function to use given the current 1018e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * rendering context. 1019e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 1020e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Please update the summary flag _SWRAST_NEW_TRIANGLE if you add or 1021e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * remove tests to this code. 1022e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 102322144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughesvoid 1024cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell_swrast_choose_triangle( GLcontext *ctx ) 1025e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 1026cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell SWcontext *swrast = SWRAST_CONTEXT(ctx); 1027b6bcae5698df88f7730d40004ce7ce0462e97a20Brian Paul const GLboolean rgbmode = ctx->Visual.rgbMode; 1028e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 102938f28665bf9fb5b2464738ca5074848ec2777ae1Gareth Hughes if (ctx->Polygon.CullFlag && 103047489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) { 1031e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(nodraw_triangle); 103247489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell return; 103347489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell } 103447489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell 1035e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->RenderMode==GL_RENDER) { 1036e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1037e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Polygon.SmoothFlag) { 103845bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_set_aa_triangle_function(ctx); 1039cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell ASSERT(swrast->Triangle); 1040e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return; 1041e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1042e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1043b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul /* special case for occlusion testing */ 1044b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul if ((ctx->Depth.OcclusionTest || ctx->Occlusion.Active) && 1045e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Test && 1046e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Mask == GL_FALSE && 1047e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Func == GL_LESS && 1048e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell !ctx->Stencil.Enabled) { 1049e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if ((rgbmode && 105022144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes ctx->Color.ColorMask[0] == 0 && 105122144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes ctx->Color.ColorMask[1] == 0 && 1052e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Color.ColorMask[2] == 0 && 1053e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Color.ColorMask[3] == 0) 1054e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell || 1055e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell (!rgbmode && ctx->Color.IndexMask == 0)) { 1056e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(occlusion_zless_triangle); 1057e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return; 1058e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1059e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1060e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 10616d460af6af77a0d5a5b568bcd6094b98e249ba93Brian Paul if (ctx->Texture._EnabledCoordUnits || ctx->FragmentProgram._Enabled) { 1062e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* Ugh, we do a _lot_ of tests to pick the best textured tri func */ 1063e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul const struct gl_texture_object *texObj2D; 1064e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul const struct gl_texture_image *texImg; 106538e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul GLenum minFilter, magFilter, envMode; 106638e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul GLint format; 1067e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul texObj2D = ctx->Texture.Unit[0].Current2D; 106818fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell texImg = texObj2D ? texObj2D->Image[0][texObj2D->BaseLevel] : NULL; 106938e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul format = texImg ? texImg->TexFormat->MesaFormat : -1; 1070e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul minFilter = texObj2D ? texObj2D->MinFilter : (GLenum) 0; 1071e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul magFilter = texObj2D ? texObj2D->MagFilter : (GLenum) 0; 1072e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul envMode = ctx->Texture.Unit[0].EnvMode; 1073e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1074c0fc0d4e5f5c246fc2459348a3d114b232d0c545Brian Paul /* First see if we can use an optimized 2-D texture function */ 107536a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul if (ctx->Texture._EnabledCoordUnits == 1 10766d460af6af77a0d5a5b568bcd6094b98e249ba93Brian Paul && !ctx->FragmentProgram._Enabled 10778afe7de8deaf3c9613fd68b344de8c52b02b1879Brian Paul && ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT 1078e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && texObj2D->WrapS==GL_REPEAT 1079e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && texObj2D->WrapT==GL_REPEAT 1080887e2cf01a99f7fe1b7c94320b7bdbbf0d6ad2f8Brian Paul && texObj2D->_IsPowerOfTwo 1081e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && texImg->Border==0 1082681b8c9d1ba06c8c82e687a5ced369b72e6b1eb9Brian Paul && texImg->Width == texImg->RowStride 108338e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul && (format == MESA_FORMAT_RGB || format == MESA_FORMAT_RGBA) 1084e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && minFilter == magFilter 1085e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Light.Model.ColorControl == GL_SINGLE_COLOR 1086e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Texture.Unit[0].EnvMode != GL_COMBINE_EXT) { 1087e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Hint.PerspectiveCorrection==GL_FASTEST) { 1088e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul if (minFilter == GL_NEAREST 10899bf68ad963ba92b5d1e725f965979042495a5313Brian Paul && format == MESA_FORMAT_RGB 1090e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && (envMode == GL_REPLACE || envMode == GL_DECAL) 10919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul && ((swrast->_RasterMask == (DEPTH_BIT | TEXTURE_BIT) 1092e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Depth.Func == GL_LESS 1093e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Depth.Mask == GL_TRUE) 10949bf68ad963ba92b5d1e725f965979042495a5313Brian Paul || swrast->_RasterMask == TEXTURE_BIT) 1095e6e0ba781b0a6a1b8747cae49ca622a6a61b1bf8Brian Paul && ctx->Polygon.StippleFlag == GL_FALSE 1096e6e0ba781b0a6a1b8747cae49ca622a6a61b1bf8Brian Paul && ctx->Visual.depthBits <= 16) { 10979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (swrast->_RasterMask == (DEPTH_BIT | TEXTURE_BIT)) { 1098e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(simple_z_textured_triangle); 1099e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1100e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1101e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(simple_textured_triangle); 1102e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1103e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1104e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1105e0bafefd7ac911ec101876f4ea0d201309e841f2Brian Paul#if (CHAN_BITS == 16 || CHAN_BITS == 32) 110696385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(general_textured_triangle); 110796385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#else 110896385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(affine_textured_triangle); 1109f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul#endif 1110e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1111e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1112e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1113e0bafefd7ac911ec101876f4ea0d201309e841f2Brian Paul#if (CHAN_BITS == 16 || CHAN_BITS == 32) 111496385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(general_textured_triangle); 111596385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#else 111696385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(persp_textured_triangle); 111796385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#endif 1118e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1119e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1120e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 112131f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul /* general case textured triangles */ 112236a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul if (ctx->Texture._EnabledCoordUnits > 1) { 112331f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul USE(multitextured_triangle); 1124e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1125e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 112631f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul USE(general_textured_triangle); 1127e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1128e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1129e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1130e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 113136a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul ASSERT(!ctx->Texture._EnabledCoordUnits); 1132e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Light.ShadeModel==GL_SMOOTH) { 1133e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* smooth shaded, no texturing, stippled or some raster ops */ 1134e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (rgbmode) { 1135e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(smooth_rgba_triangle); 1136e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1137e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1138e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(smooth_ci_triangle); 1139e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1140e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1141e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1142e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* flat shaded, no texturing, stippled or some raster ops */ 1143e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (rgbmode) { 1144e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(flat_rgba_triangle); 1145e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1146e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1147e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(flat_ci_triangle); 1148e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1149e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1150e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1151e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1152e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else if (ctx->RenderMode==GL_FEEDBACK) { 115345bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_feedback_triangle); 1154e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1155e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1156e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* GL_SELECT mode */ 115745bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_select_triangle); 1158e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1159e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 1160