1e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 2e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Mesa 3-D graphics library 38c7135ee14fb6f4d8b6e64d570daee3512c99438Brian Paul * Version: 7.3 422144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 5dd34fe8679fa200e55cfaf8e80bbecdecea084e3Brian * Copyright (C) 1999-2007 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 32bbd287103dad776d8a45c87c4e51fbc26d9b80d5Brian Paul#include "main/glheader.h" 33bbd287103dad776d8a45c87c4e51fbc26d9b80d5Brian Paul#include "main/context.h" 34bbd287103dad776d8a45c87c4e51fbc26d9b80d5Brian Paul#include "main/colormac.h" 35bbd287103dad776d8a45c87c4e51fbc26d9b80d5Brian Paul#include "main/imports.h" 36bbd287103dad776d8a45c87c4e51fbc26d9b80d5Brian Paul#include "main/macros.h" 37f84573d039e3cc2bf11d8c15d59bd3255fd05b27Vinson Lee#include "main/mtypes.h" 38decc6e2a32ef49e673c081f30e19b8970155d887Brian Paul#include "main/state.h" 39cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen#include "main/samplerobj.h" 40ec2b92f98c2e7f161521b447cc1d9a36bce3707cBrian Paul#include "program/prog_instruction.h" 41e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 42e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_aatriangle.h" 43cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_context.h" 44cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_feedback.h" 45e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_span.h" 46cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_triangle.h" 479bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 489bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 498f4d66c5f893b49eb3973aa3b31a856314c045c7Brian Paul/** 508f4d66c5f893b49eb3973aa3b31a856314c045c7Brian Paul * Test if a triangle should be culled. Used for feedback and selection mode. 518f4d66c5f893b49eb3973aa3b31a856314c045c7Brian Paul * \return GL_TRUE if the triangle is to be culled, GL_FALSE otherwise. 5277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul */ 53230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian PaulGLboolean 54f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_swrast_culltriangle( struct gl_context *ctx, 55230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const SWvertex *v0, 56230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const SWvertex *v1, 57230ebaff2aecdd9f2bf667889d54bfc3dd032bbeBrian Paul const SWvertex *v2 ) 58e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 598f4d66c5f893b49eb3973aa3b31a856314c045c7Brian Paul SWcontext *swrast = SWRAST_CONTEXT(ctx); 609e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLfloat ex = v1->attrib[FRAG_ATTRIB_WPOS][0] - v0->attrib[FRAG_ATTRIB_WPOS][0]; 619e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLfloat ey = v1->attrib[FRAG_ATTRIB_WPOS][1] - v0->attrib[FRAG_ATTRIB_WPOS][1]; 629e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLfloat fx = v2->attrib[FRAG_ATTRIB_WPOS][0] - v0->attrib[FRAG_ATTRIB_WPOS][0]; 639e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLfloat fy = v2->attrib[FRAG_ATTRIB_WPOS][1] - v0->attrib[FRAG_ATTRIB_WPOS][1]; 64e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell GLfloat c = ex*fy-ey*fx; 65e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 66a1d3855fb0c3969a32825d0b899076917d5ccce6Brian Paul if (c * swrast->_BackfaceSign * swrast->_BackfaceCullSign <= 0.0F) 678f4d66c5f893b49eb3973aa3b31a856314c045c7Brian Paul return GL_FALSE; 6822144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes 698f4d66c5f893b49eb3973aa3b31a856314c045c7Brian Paul return GL_TRUE; 70e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 71e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 72e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 7395e02a210ed339ad20b0c16284dcdcf9af2dc755Brian Paul 74e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 75e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a flat-shaded RGBA triangle. 76e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 77cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME flat_rgba_triangle 78e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 79f1e236987829393c81dc86ea19cb49eefe190317Brian Paul#define SETUP_CODE \ 8036a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul ASSERT(ctx->Texture._EnabledCoordUnits == 0);\ 817956292a765910077f50352d7cd0174e1e66d26cBrian Paul ASSERT(ctx->Light.ShadeModel==GL_FLAT); \ 8277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.interpMask |= SPAN_RGBA; \ 8377df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.red = ChanToFixed(v2->color[0]); \ 8477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.green = ChanToFixed(v2->color[1]); \ 8577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.blue = ChanToFixed(v2->color[2]); \ 8677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.alpha = ChanToFixed(v2->color[3]); \ 8777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.redStep = 0; \ 8877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.greenStep = 0; \ 8977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.blueStep = 0; \ 9077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.alphaStep = 0; 9145bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_rgba_span(ctx, &span); 92e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 93e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 94e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 95e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 96e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 97e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render a smooth-shaded RGBA triangle. 98e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 99cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME smooth_rgba_triangle 100e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 101e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 102e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 103733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul#define SETUP_CODE \ 104733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul { \ 105733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul /* texturing must be off */ \ 10636a0a3252e1e20df69b53f70ba93bc74c4a4bf0eBrian Paul ASSERT(ctx->Texture._EnabledCoordUnits == 0); \ 107733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul ASSERT(ctx->Light.ShadeModel==GL_SMOOTH); \ 108733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul } 10945bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN( span ) _swrast_write_rgba_span(ctx, &span); 110e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 111e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 112e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 113e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 114e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 115e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render an RGB, GL_DECAL, textured triangle. 116e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Interpolate S,T only w/out mipmapping or perspective correction. 117e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 1184003bde6fffc3e5b9e1a115ba952b988dffb099aBrian * No fog. No depth testing. 119e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 120cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME simple_textured_triangle 121e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_INT_TEX 1 122e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define S_SCALE twidth 123e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define T_SCALE theight 1249bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 125e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define SETUP_CODE \ 1262a077500a84819d1e6ac62e84ded130aa655c5e9Brian struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; \ 1270103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_object *obj = \ 1289818734e0148510967ca9ee0d1aa8b196b509f02Brian Paul ctx->Texture.Unit[0].CurrentTex[TEXTURE_2D_INDEX]; \ 1290103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_image *texImg = \ 1300103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul obj->Image[0][obj->BaseLevel]; \ 1316e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul const struct swrast_texture_image *swImg = \ 1326e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul swrast_texture_image_const(texImg); \ 1330103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLfloat twidth = (GLfloat) texImg->Width; \ 1340103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLfloat theight = (GLfloat) texImg->Height; \ 1350103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLint twidth_log2 = texImg->WidthLog2; \ 136bd3c10c0f0c60ab3421c2da2eab814edc2296cb0Brian Paul const GLubyte *texture = (const GLubyte *) swImg->Map; \ 1370103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLint smask = texImg->Width - 1; \ 1380103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLint tmask = texImg->Height - 1; \ 1390103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul ASSERT(texImg->TexFormat == MESA_FORMAT_RGB888); \ 1402a077500a84819d1e6ac62e84ded130aa655c5e9Brian if (!rb || !texture) { \ 1418e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 142e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 143e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 144920023240c2fc42675f318732b43bdc6f339113cBrian Paul#define RENDER_SPAN( span ) \ 1459bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; \ 146fb1650b202822adf37baa7e51878311bb83dc976Brian Paul GLubyte (*rgba)[4] = swrast->SpanArrays->rgba8; \ 14777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] -= FIXED_HALF; /* off-by-one error? */ \ 14877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] -= FIXED_HALF; \ 14977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul for (i = 0; i < span.end; i++) { \ 15077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint s = FixedToInt(span.intTex[0]) & smask; \ 15177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint t = FixedToInt(span.intTex[1]) & tmask; \ 1529bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << twidth_log2) + s; \ 1539bf68ad963ba92b5d1e725f965979042495a5313Brian Paul pos = pos + pos + pos; /* multiply by 3 */ \ 1546e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][RCOMP] = texture[pos+2]; \ 1556e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][GCOMP] = texture[pos+1]; \ 1566e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][BCOMP] = texture[pos+0]; \ 1576e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][ACOMP] = 0xff; \ 15877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] += span.intTexStep[0]; \ 15977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] += span.intTexStep[1]; \ 1609bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 161f9874feef4d8952df5054bd8e8f4e0deda4ef44fBrian Paul _swrast_put_row(ctx, rb, GL_UNSIGNED_BYTE, span.end, \ 162f9874feef4d8952df5054bd8e8f4e0deda4ef44fBrian Paul span.x, span.y, rgba, NULL); 163e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 164e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 165cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 166e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 167e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 168e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 169e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render an RGB, GL_DECAL, textured triangle. 170e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Interpolate S,T, GL_LESS depth test, w/out mipmapping or 171e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * perspective correction. 172e6e0ba781b0a6a1b8747cae49ca622a6a61b1bf8Brian Paul * Depth buffer bits must be <= sizeof(DEFAULT_SOFTWARE_DEPTH_TYPE) 17322144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 174e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * No fog. 175e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 176cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME simple_z_textured_triangle 177e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 178e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE 179e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_INT_TEX 1 180e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define S_SCALE twidth 181e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define T_SCALE theight 1829bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 183e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define SETUP_CODE \ 1842a077500a84819d1e6ac62e84ded130aa655c5e9Brian struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; \ 1850103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_object *obj = \ 1869818734e0148510967ca9ee0d1aa8b196b509f02Brian Paul ctx->Texture.Unit[0].CurrentTex[TEXTURE_2D_INDEX]; \ 1870103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_image *texImg = \ 1880103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul obj->Image[0][obj->BaseLevel]; \ 1896e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul const struct swrast_texture_image *swImg = \ 1906e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul swrast_texture_image_const(texImg); \ 1910103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLfloat twidth = (GLfloat) texImg->Width; \ 1920103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLfloat theight = (GLfloat) texImg->Height; \ 1930103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLint twidth_log2 = texImg->WidthLog2; \ 194bd3c10c0f0c60ab3421c2da2eab814edc2296cb0Brian Paul const GLubyte *texture = (const GLubyte *) swImg->Map; \ 1950103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLint smask = texImg->Width - 1; \ 1960103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLint tmask = texImg->Height - 1; \ 1970103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul ASSERT(texImg->TexFormat == MESA_FORMAT_RGB888); \ 1982a077500a84819d1e6ac62e84ded130aa655c5e9Brian if (!rb || !texture) { \ 1998e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 200e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 201e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 202920023240c2fc42675f318732b43bdc6f339113cBrian Paul#define RENDER_SPAN( span ) \ 2039bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; \ 204fb1650b202822adf37baa7e51878311bb83dc976Brian Paul GLubyte (*rgba)[4] = swrast->SpanArrays->rgba8; \ 20530ea34a8d9ad22be626c24aa660a80f2e08c1e24Brian Paul GLubyte *mask = swrast->SpanArrays->mask; \ 20677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] -= FIXED_HALF; /* off-by-one error? */ \ 20777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] -= FIXED_HALF; \ 20877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul for (i = 0; i < span.end; i++) { \ 2093e37bafab0a339021354b9c78f983d05d433d735Brian Paul const GLuint z = FixedToDepth(span.z); \ 2109bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (z < zRow[i]) { \ 21177df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint s = FixedToInt(span.intTex[0]) & smask; \ 21277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint t = FixedToInt(span.intTex[1]) & tmask; \ 2139bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint pos = (t << twidth_log2) + s; \ 2149bf68ad963ba92b5d1e725f965979042495a5313Brian Paul pos = pos + pos + pos; /* multiply by 3 */ \ 2156e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][RCOMP] = texture[pos+2]; \ 2166e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][GCOMP] = texture[pos+1]; \ 2176e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][BCOMP] = texture[pos+0]; \ 2186e7bc795784f13068e00c478b94740c8b27789e6Brian Paul rgba[i][ACOMP] = 0xff; \ 2199bf68ad963ba92b5d1e725f965979042495a5313Brian Paul zRow[i] = z; \ 22030ea34a8d9ad22be626c24aa660a80f2e08c1e24Brian Paul mask[i] = 1; \ 2219bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 2229bf68ad963ba92b5d1e725f965979042495a5313Brian Paul else { \ 22330ea34a8d9ad22be626c24aa660a80f2e08c1e24Brian Paul mask[i] = 0; \ 2249bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 22577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[0] += span.intTexStep[0]; \ 22677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.intTex[1] += span.intTexStep[1]; \ 22777df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.z += span.zStep; \ 2289bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 229f9874feef4d8952df5054bd8e8f4e0deda4ef44fBrian Paul _swrast_put_row(ctx, rb, GL_UNSIGNED_BYTE, \ 23030ea34a8d9ad22be626c24aa660a80f2e08c1e24Brian Paul span.end, span.x, span.y, rgba, mask); 231e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 232e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 233cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 234e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 235f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul#if CHAN_TYPE != GL_FLOAT 236e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2379bf68ad963ba92b5d1e725f965979042495a5313Brian Paulstruct affine_info 238e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 2399bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum filter; 2409bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum format; 2419bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLenum envmode; 2429bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint smask, tmask; 2439bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint twidth_log2; 2449bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *texture; 245fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul GLfixed er, eg, eb, ea; 2469bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLint tbytesline, tsize; 2479bf68ad963ba92b5d1e725f965979042495a5313Brian Paul}; 248cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell 2497152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul 2509520f483b8f1e45fa474674b415554988de5d8d3Brian Paulstatic inline GLint 251f138b977d09327445a8e9c8126c493c4487c1630Brian Paulilerp(GLint t, GLint a, GLint b) 252f138b977d09327445a8e9c8126c493c4487c1630Brian Paul{ 253f138b977d09327445a8e9c8126c493c4487c1630Brian Paul return a + ((t * (b - a)) >> FIXED_SHIFT); 254f138b977d09327445a8e9c8126c493c4487c1630Brian Paul} 255f138b977d09327445a8e9c8126c493c4487c1630Brian Paul 2569520f483b8f1e45fa474674b415554988de5d8d3Brian Paulstatic inline GLint 257f138b977d09327445a8e9c8126c493c4487c1630Brian Paulilerp_2d(GLint ia, GLint ib, GLint v00, GLint v10, GLint v01, GLint v11) 258f138b977d09327445a8e9c8126c493c4487c1630Brian Paul{ 259f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint temp0 = ilerp(ia, v00, v10); 260f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint temp1 = ilerp(ia, v01, v11); 261f138b977d09327445a8e9c8126c493c4487c1630Brian Paul return ilerp(ib, temp0, temp1); 262f138b977d09327445a8e9c8126c493c4487c1630Brian Paul} 263f138b977d09327445a8e9c8126c493c4487c1630Brian Paul 264f138b977d09327445a8e9c8126c493c4487c1630Brian Paul 2657152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul/* This function can handle GL_NEAREST or GL_LINEAR sampling of 2D RGB or RGBA 2667152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul * textures with GL_REPLACE, GL_MODULATE, GL_BLEND, GL_DECAL or GL_ADD 2677152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul * texture env modes. 2687152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul */ 2699520f483b8f1e45fa474674b415554988de5d8d3Brian Paulstatic inline void 270f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergaffine_span(struct gl_context *ctx, SWspan *span, 2719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct affine_info *info) 2729bf68ad963ba92b5d1e725f965979042495a5313Brian Paul{ 2737152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLchan sample[4]; /* the filtered texture sample */ 27407e50058a5699fc9279de6bf5d1449d52ccdc476Brian Paul const GLuint texEnableSave = ctx->Texture._EnabledCoordUnits; 2758c7135ee14fb6f4d8b6e64d570daee3512c99438Brian Paul 276fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul /* Instead of defining a function for each mode, a test is done 277fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * between the outer and inner loops. This is to reduce code size 278fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * and complexity. Observe that an optimizing compiler kills 279fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST). 280fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul */ 281e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2828c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul#define NEAREST_RGB \ 2838c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[RCOMP] = tex00[2]; \ 2848c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[GCOMP] = tex00[1]; \ 2858c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[BCOMP] = tex00[0]; \ 2868c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[ACOMP] = CHAN_MAX; 287e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define LINEAR_RGB \ 2898c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[RCOMP] = ilerp_2d(sf, tf, tex00[2], tex01[2], tex10[2], tex11[2]);\ 290f138b977d09327445a8e9c8126c493c4487c1630Brian Paul sample[GCOMP] = ilerp_2d(sf, tf, tex00[1], tex01[1], tex10[1], tex11[1]);\ 2918c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[BCOMP] = ilerp_2d(sf, tf, tex00[0], tex01[0], tex10[0], tex11[0]);\ 292f138b977d09327445a8e9c8126c493c4487c1630Brian Paul sample[ACOMP] = CHAN_MAX; 293bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 2948c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul#define NEAREST_RGBA \ 2958c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[RCOMP] = tex00[3]; \ 2968c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[GCOMP] = tex00[2]; \ 2978c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[BCOMP] = tex00[1]; \ 2988c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[ACOMP] = tex00[0]; 299e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 3009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define LINEAR_RGBA \ 3018c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[RCOMP] = ilerp_2d(sf, tf, tex00[3], tex01[3], tex10[3], tex11[3]);\ 3028c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[GCOMP] = ilerp_2d(sf, tf, tex00[2], tex01[2], tex10[2], tex11[2]);\ 3038c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[BCOMP] = ilerp_2d(sf, tf, tex00[1], tex01[1], tex10[1], tex11[1]);\ 3048c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul sample[ACOMP] = ilerp_2d(sf, tf, tex00[0], tex01[0], tex10[0], tex11[0]) 305bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 306fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul#define MODULATE \ 3077152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = span->red * (sample[RCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3087152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = span->green * (sample[GCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3097152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = span->blue * (sample[BCOMP] + 1u) >> (FIXED_SHIFT + 8); \ 3107152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1u) >> (FIXED_SHIFT + 8) 3119bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 3129bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define DECAL \ 3137152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->red + \ 3147152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[RCOMP] << FIXED_SHIFT)) \ 315bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 3167152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->green + \ 3177152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[GCOMP] << FIXED_SHIFT)) \ 318bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 3197152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->blue + \ 3207152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul ((sample[ACOMP] + 1) * sample[BCOMP] << FIXED_SHIFT)) \ 321bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul >> (FIXED_SHIFT + 8); \ 322bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul dest[ACOMP] = FixedToInt(span->alpha) 3239bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 3249bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define BLEND \ 3257152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = ((CHAN_MAX - sample[RCOMP]) * span->red \ 3267152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[RCOMP] + 1) * info->er) >> (FIXED_SHIFT + 8); \ 3277152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = ((CHAN_MAX - sample[GCOMP]) * span->green \ 3287152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[GCOMP] + 1) * info->eg) >> (FIXED_SHIFT + 8); \ 3297152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = ((CHAN_MAX - sample[BCOMP]) * span->blue \ 3307152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul + (sample[BCOMP] + 1) * info->eb) >> (FIXED_SHIFT + 8); \ 3317152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8) 332bbf6a41d2fd4a3d54e6b5dea50bba24768c01eceBrian Paul 3337152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul#define REPLACE COPY_CHAN4(dest, sample) 334e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 3359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define ADD \ 3367152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul { \ 3377152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint rSum = FixedToInt(span->red) + (GLint) sample[RCOMP]; \ 3387152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint gSum = FixedToInt(span->green) + (GLint) sample[GCOMP]; \ 3397152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul GLint bSum = FixedToInt(span->blue) + (GLint) sample[BCOMP]; \ 3407152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[RCOMP] = MIN2(rSum, CHAN_MAX); \ 3417152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[GCOMP] = MIN2(gSum, CHAN_MAX); \ 3427152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[BCOMP] = MIN2(bSum, CHAN_MAX); \ 3437152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8); \ 3447152305e0a7d963f49c05bc530e495dc3ad82e3bBrian Paul } 345e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 346e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* shortcuts */ 347e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 34835e5e89f5614ebb032479b02dec888563f829b30Brian Paul#define NEAREST_RGB_REPLACE \ 34935e5e89f5614ebb032479b02dec888563f829b30Brian Paul NEAREST_RGB; \ 35035e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[0] = sample[0]; \ 35135e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[1] = sample[1]; \ 35235e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[2] = sample[2]; \ 35335e5e89f5614ebb032479b02dec888563f829b30Brian Paul dest[3] = FixedToInt(span->alpha); 354e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 3558c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul#define NEAREST_RGBA_REPLACE \ 3568c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul dest[RCOMP] = tex00[3]; \ 3578c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul dest[GCOMP] = tex00[2]; \ 3588c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul dest[BCOMP] = tex00[1]; \ 3598c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul dest[ACOMP] = tex00[0] 360e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 361f138b977d09327445a8e9c8126c493c4487c1630Brian Paul#define SPAN_NEAREST(DO_TEX, COMPS) \ 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; \ 367f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLchan *tex00 = info->texture + COMPS * 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 378f138b977d09327445a8e9c8126c493c4487c1630Brian Paul#define SPAN_LINEAR(DO_TEX, COMPS) \ 37957d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul for (i = 0; i < span->end; i++) { \ 38033170eeb185f5fe766374a749464497cdfab6931Brian Paul /* Isn't it necessary to use FixedFloor below?? */ \ 381f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint s = FixedToInt(span->intTex[0]) & info->smask; \ 382f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint t = FixedToInt(span->intTex[1]) & info->tmask; \ 383f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfixed sf = span->intTex[0] & FIXED_FRAC_MASK; \ 384f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfixed tf = span->intTex[1] & FIXED_FRAC_MASK; \ 385f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint pos = (t << info->twidth_log2) + s; \ 386f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLchan *tex00 = info->texture + COMPS * pos; \ 3879bf68ad963ba92b5d1e725f965979042495a5313Brian Paul const GLchan *tex10 = tex00 + info->tbytesline; \ 388f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLchan *tex01 = tex00 + COMPS; \ 389f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLchan *tex11 = tex10 + COMPS; \ 3909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (t == info->tmask) { \ 3919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex10 -= info->tsize; \ 3929bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex11 -= info->tsize; \ 3939bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 3949bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (s == info->smask) { \ 3959bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex01 -= info->tbytesline; \ 3969bf68ad963ba92b5d1e725f965979042495a5313Brian Paul tex11 -= info->tbytesline; \ 3979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 3989bf68ad963ba92b5d1e725f965979042495a5313Brian Paul DO_TEX; \ 3999bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->red += span->redStep; \ 4009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->green += span->greenStep; \ 4019bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->blue += span->blueStep; \ 4029bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->alpha += span->alphaStep; \ 4039bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] += span->intTexStep[0]; \ 4049bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] += span->intTexStep[1]; \ 4059bf68ad963ba92b5d1e725f965979042495a5313Brian Paul dest += 4; \ 406e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 407e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 4089bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 4099bf68ad963ba92b5d1e725f965979042495a5313Brian Paul GLuint i; 41077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLchan *dest = span->array->rgba[0]; 41157d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul 41292ced46eaf1f389108ed8d3d788498d799f0b385Brian Paul /* Disable tex units so they're not re-applied in swrast_write_rgba_span */ 41307e50058a5699fc9279de6bf5d1449d52ccdc476Brian Paul ctx->Texture._EnabledCoordUnits = 0x0; 41492ced46eaf1f389108ed8d3d788498d799f0b385Brian Paul 4159bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] -= FIXED_HALF; 4169bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] -= FIXED_HALF; 4179bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->filter) { 4189bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_NEAREST: 4199bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->format) { 4208c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGB888: 4219bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4229bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 42333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;MODULATE,3); 4249bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4259bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 4269bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 42733170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB_REPLACE,3); 4289bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4299bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 43033170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;BLEND,3); 4319bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4329bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 43333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;ADD,3); 4349bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4364663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode in SPAN_LINEAR"); 4374663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4389bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4399bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4408c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGBA8888: 4419bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch(info->envmode) { 4429bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 44333170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;MODULATE,4); 4449bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4459bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 44633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;DECAL,4); 4479bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4489bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 44933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;BLEND,4); 4509bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4519bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 45233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;ADD,4); 4539bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4549bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 45533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA_REPLACE,4); 4569bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4579bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4584663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (2) in SPAN_LINEAR"); 4594663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4609bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4619bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 4659bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_LINEAR: 4669bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[0] -= FIXED_HALF; 4679bf68ad963ba92b5d1e725f965979042495a5313Brian Paul span->intTex[1] -= FIXED_HALF; 4689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->format) { 4698c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGB888: 4709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 47233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;MODULATE,3); 4739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 4759bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 47633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;REPLACE,3); 4779bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4789bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 47933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;BLEND,3); 4809bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4819bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 48233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;ADD,3); 4839bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4849bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 4854663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (3) in SPAN_LINEAR"); 4864663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 4879bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 4889bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4898c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGBA8888: 4909bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info->envmode) { 4919bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_MODULATE: 49233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;MODULATE,4); 4939bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4949bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_DECAL: 49533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;DECAL,4); 4969bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 4979bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_BLEND: 49833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;BLEND,4); 4999bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5009bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_ADD: 50133170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;ADD,4); 5029bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5039bf68ad963ba92b5d1e725f965979042495a5313Brian Paul case GL_REPLACE: 50433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;REPLACE,4); 5059bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5069bf68ad963ba92b5d1e725f965979042495a5313Brian Paul default: 5074663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (4) in SPAN_LINEAR"); 5084663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 5094663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul } 5104663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul break; 5119bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 5129bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; 5139bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } 514733a4b602bbbfda83ee03b7ae4f3737bbe659034Brian Paul span->interpMask &= ~SPAN_RGBA; 5152a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul ASSERT(span->arrayMask & SPAN_RGBA); 5168c7135ee14fb6f4d8b6e64d570daee3512c99438Brian Paul 51745bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 518e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 5198c7135ee14fb6f4d8b6e64d570daee3512c99438Brian Paul /* re-enable texture units */ 52007e50058a5699fc9279de6bf5d1449d52ccdc476Brian Paul ctx->Texture._EnabledCoordUnits = texEnableSave; 5218c7135ee14fb6f4d8b6e64d570daee3512c99438Brian Paul 52233170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_NEAREST 52333170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_LINEAR 524e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 525e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 526e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 527e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 528e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 5299bf68ad963ba92b5d1e725f965979042495a5313Brian Paul * Render an RGB/RGBA textured triangle without perspective correction. 5309bf68ad963ba92b5d1e725f965979042495a5313Brian Paul */ 531cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME affine_textured_triangle 5329bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_Z 1 5339bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_RGB 1 5349bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_ALPHA 1 5359bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define INTERP_INT_TEX 1 5369bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define S_SCALE twidth 5379bf68ad963ba92b5d1e725f965979042495a5313Brian Paul#define T_SCALE theight 5389bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 539571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul#define SETUP_CODE \ 540571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul struct affine_info info; \ 5419bf68ad963ba92b5d1e725f965979042495a5313Brian Paul struct gl_texture_unit *unit = ctx->Texture.Unit+0; \ 5420103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_object *obj = \ 5439818734e0148510967ca9ee0d1aa8b196b509f02Brian Paul ctx->Texture.Unit[0].CurrentTex[TEXTURE_2D_INDEX]; \ 5440103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_image *texImg = \ 5450103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul obj->Image[0][obj->BaseLevel]; \ 5466e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul const struct swrast_texture_image *swImg = \ 5476e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul swrast_texture_image_const(texImg); \ 5480103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLfloat twidth = (GLfloat) texImg->Width; \ 5490103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const GLfloat theight = (GLfloat) texImg->Height; \ 550bd3c10c0f0c60ab3421c2da2eab814edc2296cb0Brian Paul info.texture = (const GLchan *) swImg->Map; \ 5510103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.twidth_log2 = texImg->WidthLog2; \ 5520103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.smask = texImg->Width - 1; \ 5530103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tmask = texImg->Height - 1; \ 5540103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.format = texImg->TexFormat; \ 555ecfaab88b2577bd0395bc05d75a036126806a9c4Brian Paul info.filter = obj->Sampler.MinFilter; \ 5569bf68ad963ba92b5d1e725f965979042495a5313Brian Paul info.envmode = unit->EnvMode; \ 557555dc25c4c5a0991fb6846ccc263a195717512deVinson Lee info.er = 0; \ 558555dc25c4c5a0991fb6846ccc263a195717512deVinson Lee info.eg = 0; \ 559555dc25c4c5a0991fb6846ccc263a195717512deVinson Lee info.eb = 0; \ 56077df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.arrayMask |= SPAN_RGBA; \ 5619bf68ad963ba92b5d1e725f965979042495a5313Brian Paul \ 5629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (info.envmode == GL_BLEND) { \ 5639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul /* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \ 564fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \ 565fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \ 566fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \ 567fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \ 5689bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 5699bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (!info.texture) { \ 5709bf68ad963ba92b5d1e725f965979042495a5313Brian Paul /* this shouldn't happen */ \ 5719bf68ad963ba92b5d1e725f965979042495a5313Brian Paul return; \ 5729bf68ad963ba92b5d1e725f965979042495a5313Brian Paul } \ 5739bf68ad963ba92b5d1e725f965979042495a5313Brian Paul \ 5749bf68ad963ba92b5d1e725f965979042495a5313Brian Paul switch (info.format) { \ 5758c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGB888: \ 5760103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tbytesline = texImg->Width * 3; \ 5779bf68ad963ba92b5d1e725f965979042495a5313Brian Paul break; \ 5788c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGBA8888: \ 5790103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tbytesline = texImg->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 } \ 5850103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tsize = texImg->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 6069520f483b8f1e45fa474674b415554988de5d8d3Brian Paulstatic inline void 607f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergfast_persp_span(struct gl_context *ctx, SWspan *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; \ 642f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ); \ 643f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ); \ 644f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfixed s_fix = FloatToFixed(s_tmp) - FIXED_HALF; \ 645f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfixed t_fix = FloatToFixed(t_tmp) - FIXED_HALF; \ 646f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint s = FixedToInt(FixedFloor(s_fix)) & info->smask; \ 647f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint t = FixedToInt(FixedFloor(t_fix)) & info->tmask; \ 648f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfixed sf = s_fix & FIXED_FRAC_MASK; \ 649f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLfixed tf = t_fix & FIXED_FRAC_MASK; \ 650f138b977d09327445a8e9c8126c493c4487c1630Brian Paul const GLint pos = (t << info->twidth_log2) + s; \ 65133170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex00 = info->texture + COMP * pos; \ 65233170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex10 = tex00 + info->tbytesline; \ 65333170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex01 = tex00 + COMP; \ 65433170eeb185f5fe766374a749464497cdfab6931Brian Paul const GLchan *tex11 = tex10 + COMP; \ 65533170eeb185f5fe766374a749464497cdfab6931Brian Paul if (t == info->tmask) { \ 65633170eeb185f5fe766374a749464497cdfab6931Brian Paul tex10 -= info->tsize; \ 65733170eeb185f5fe766374a749464497cdfab6931Brian Paul tex11 -= info->tsize; \ 65833170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 65933170eeb185f5fe766374a749464497cdfab6931Brian Paul if (s == info->smask) { \ 66033170eeb185f5fe766374a749464497cdfab6931Brian Paul tex01 -= info->tbytesline; \ 66133170eeb185f5fe766374a749464497cdfab6931Brian Paul tex11 -= info->tbytesline; \ 66233170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 66333170eeb185f5fe766374a749464497cdfab6931Brian Paul DO_TEX; \ 66433170eeb185f5fe766374a749464497cdfab6931Brian Paul span->red += span->redStep; \ 66533170eeb185f5fe766374a749464497cdfab6931Brian Paul span->green += span->greenStep; \ 66633170eeb185f5fe766374a749464497cdfab6931Brian Paul span->blue += span->blueStep; \ 66733170eeb185f5fe766374a749464497cdfab6931Brian Paul span->alpha += span->alphaStep; \ 66833170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[0] += tex_step[0]; \ 66933170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[1] += tex_step[1]; \ 67033170eeb185f5fe766374a749464497cdfab6931Brian Paul tex_coord[2] += tex_step[2]; \ 67133170eeb185f5fe766374a749464497cdfab6931Brian Paul dest += 4; \ 67233170eeb185f5fe766374a749464497cdfab6931Brian Paul } 673e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 67433170eeb185f5fe766374a749464497cdfab6931Brian Paul GLuint i; 67533170eeb185f5fe766374a749464497cdfab6931Brian Paul GLfloat tex_coord[3], tex_step[3]; 67677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLchan *dest = span->array->rgba[0]; 67757d6e1aebf1f850686a2c8d3a246fb388ec23979Brian Paul 67807e50058a5699fc9279de6bf5d1449d52ccdc476Brian Paul const GLuint texEnableSave = ctx->Texture._EnabledCoordUnits; 67907e50058a5699fc9279de6bf5d1449d52ccdc476Brian Paul ctx->Texture._EnabledCoordUnits = 0; 680a803b0c891404dcd7c376e91f6a033cd4e42abc3Brian Paul 6819ab512ad8cf3a12f4f7f8494fa99bc9389f217dbBrian tex_coord[0] = span->attrStart[FRAG_ATTRIB_TEX0][0] * (info->smask + 1); 6829ab512ad8cf3a12f4f7f8494fa99bc9389f217dbBrian tex_step[0] = span->attrStepX[FRAG_ATTRIB_TEX0][0] * (info->smask + 1); 6839ab512ad8cf3a12f4f7f8494fa99bc9389f217dbBrian tex_coord[1] = span->attrStart[FRAG_ATTRIB_TEX0][1] * (info->tmask + 1); 6849ab512ad8cf3a12f4f7f8494fa99bc9389f217dbBrian tex_step[1] = span->attrStepX[FRAG_ATTRIB_TEX0][1] * (info->tmask + 1); 6859ab512ad8cf3a12f4f7f8494fa99bc9389f217dbBrian /* span->attrStart[FRAG_ATTRIB_TEX0][2] only if 3D-texturing, here only 2D */ 6869ab512ad8cf3a12f4f7f8494fa99bc9389f217dbBrian tex_coord[2] = span->attrStart[FRAG_ATTRIB_TEX0][3]; 6879ab512ad8cf3a12f4f7f8494fa99bc9389f217dbBrian tex_step[2] = span->attrStepX[FRAG_ATTRIB_TEX0][3]; 688e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 68933170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->filter) { 69033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_NEAREST: 69133170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->format) { 6928c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGB888: 69333170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 69433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 69533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;MODULATE,3); 69633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 69733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 69833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 69933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB_REPLACE,3); 70033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 70233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;BLEND,3); 70333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 70533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGB;ADD,3); 70633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 70733170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7084663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (5) in SPAN_LINEAR"); 7094663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 71033170eeb185f5fe766374a749464497cdfab6931Brian Paul } 71133170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 7128c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGBA8888: 71333170eeb185f5fe766374a749464497cdfab6931Brian Paul switch(info->envmode) { 71433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 71533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;MODULATE,4); 71633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 71733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 71833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;DECAL,4); 71933170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 72133170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;BLEND,4); 72233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72333170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 72433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA;ADD,4); 72533170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72633170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 72733170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_NEAREST(NEAREST_RGBA_REPLACE,4); 72833170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 72933170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7304663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (6) in SPAN_LINEAR"); 7314663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 73233170eeb185f5fe766374a749464497cdfab6931Brian Paul } 73333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 73433170eeb185f5fe766374a749464497cdfab6931Brian Paul } 73533170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 73633170eeb185f5fe766374a749464497cdfab6931Brian Paul 73733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_LINEAR: 73833170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->format) { 7398c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGB888: 74033170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 74133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 74233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;MODULATE,3); 74333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 74433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 74533170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 74633170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;REPLACE,3); 74733170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 74833170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 74933170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;BLEND,3); 75033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 75133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 75233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGB;ADD,3); 75333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 75433170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7554663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (7) in SPAN_LINEAR"); 7564663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 75733170eeb185f5fe766374a749464497cdfab6931Brian Paul } 75833170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 7598c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGBA8888: 76033170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info->envmode) { 76133170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_MODULATE: 76233170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;MODULATE,4); 76333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 76433170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_DECAL: 76533170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;DECAL,4); 76633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 76733170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_BLEND: 76833170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;BLEND,4); 76933170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77033170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_ADD: 77133170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;ADD,4); 77233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77333170eeb185f5fe766374a749464497cdfab6931Brian Paul case GL_REPLACE: 77433170eeb185f5fe766374a749464497cdfab6931Brian Paul SPAN_LINEAR(LINEAR_RGBA;REPLACE,4); 77533170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 77633170eeb185f5fe766374a749464497cdfab6931Brian Paul default: 7774663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul _mesa_problem(ctx, "bad tex env mode (8) in SPAN_LINEAR"); 7784663bd50f1e2f219bd1b2a4d902b11b936512398Brian Paul return; 77933170eeb185f5fe766374a749464497cdfab6931Brian Paul } 78033170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 78133170eeb185f5fe766374a749464497cdfab6931Brian Paul } 78233170eeb185f5fe766374a749464497cdfab6931Brian Paul break; 783e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 78433170eeb185f5fe766374a749464497cdfab6931Brian Paul 7852a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul ASSERT(span->arrayMask & SPAN_RGBA); 78645bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 787e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 78833170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_NEAREST 78933170eeb185f5fe766374a749464497cdfab6931Brian Paul#undef SPAN_LINEAR 790a803b0c891404dcd7c376e91f6a033cd4e42abc3Brian Paul 791a803b0c891404dcd7c376e91f6a033cd4e42abc3Brian Paul /* restore state */ 79207e50058a5699fc9279de6bf5d1449d52ccdc476Brian Paul ctx->Texture._EnabledCoordUnits = texEnableSave; 793e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 794e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 795e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 796e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 797e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Render an perspective corrected RGB/RGBA textured triangle. 798e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * The Q (aka V in Mesa) coordinate must be zero such that the divide 799e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * by interpolated Q/W comes out right. 800e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 801e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 802cdf2da368d180205df3573697b51b8764048ad6eBrian Paul#define NAME persp_textured_triangle 803e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 804e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 805e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 8068a8a5bd104e8cd9362415db77d5f6a3945939589Brian#define INTERP_ATTRIBS 1 8079bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 808571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul#define SETUP_CODE \ 809571c8ecc8f9442fb8bbaa1f29b1d0d4f8e5b3cadBrian Paul struct persp_info info; \ 8102ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul const struct gl_texture_unit *unit = ctx->Texture.Unit+0; \ 8110103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_object *obj = \ 8129818734e0148510967ca9ee0d1aa8b196b509f02Brian Paul ctx->Texture.Unit[0].CurrentTex[TEXTURE_2D_INDEX]; \ 8130103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul const struct gl_texture_image *texImg = \ 8140103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul obj->Image[0][obj->BaseLevel]; \ 8156e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul const struct swrast_texture_image *swImg = \ 8166e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul swrast_texture_image_const(texImg); \ 817bd3c10c0f0c60ab3421c2da2eab814edc2296cb0Brian Paul info.texture = (const GLchan *) swImg->Map; \ 8180103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.twidth_log2 = texImg->WidthLog2; \ 8190103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.smask = texImg->Width - 1; \ 8200103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tmask = texImg->Height - 1; \ 8210103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.format = texImg->TexFormat; \ 822ecfaab88b2577bd0395bc05d75a036126806a9c4Brian Paul info.filter = obj->Sampler.MinFilter; \ 82333170eeb185f5fe766374a749464497cdfab6931Brian Paul info.envmode = unit->EnvMode; \ 824555dc25c4c5a0991fb6846ccc263a195717512deVinson Lee info.er = 0; \ 825555dc25c4c5a0991fb6846ccc263a195717512deVinson Lee info.eg = 0; \ 826555dc25c4c5a0991fb6846ccc263a195717512deVinson Lee info.eb = 0; \ 82733170eeb185f5fe766374a749464497cdfab6931Brian Paul \ 82833170eeb185f5fe766374a749464497cdfab6931Brian Paul if (info.envmode == GL_BLEND) { \ 82933170eeb185f5fe766374a749464497cdfab6931Brian Paul /* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \ 830fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \ 831fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \ 832fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \ 833fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paul info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \ 83433170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 83533170eeb185f5fe766374a749464497cdfab6931Brian Paul if (!info.texture) { \ 83633170eeb185f5fe766374a749464497cdfab6931Brian Paul /* this shouldn't happen */ \ 8378e39ad2cd67d49be40ff0822f3269affdf83d601Brian Paul return; \ 838e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } \ 83933170eeb185f5fe766374a749464497cdfab6931Brian Paul \ 84033170eeb185f5fe766374a749464497cdfab6931Brian Paul switch (info.format) { \ 8418c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGB888: \ 8420103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tbytesline = texImg->Width * 3; \ 84333170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 8448c36ca707ca8879d6f888de7733ffb6b04ddc48aBrian Paul case MESA_FORMAT_RGBA8888: \ 8450103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tbytesline = texImg->Width * 4; \ 84633170eeb185f5fe766374a749464497cdfab6931Brian Paul break; \ 847e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell default: \ 848fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul _mesa_problem(NULL, "Bad texture format in persp_textured_triangle");\ 84933170eeb185f5fe766374a749464497cdfab6931Brian Paul return; \ 85033170eeb185f5fe766374a749464497cdfab6931Brian Paul } \ 8510103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul info.tsize = texImg->Height * info.tbytesline; 852e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 8537956292a765910077f50352d7cd0174e1e66d26cBrian Paul#define RENDER_SPAN( span ) \ 85477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.interpMask &= ~SPAN_RGBA; \ 85577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul span.arrayMask |= SPAN_RGBA; \ 85677df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul fast_persp_span(ctx, &span, &info); 857e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 858e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 859e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 8609e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#endif /*CHAN_TYPE != GL_FLOAT*/ 861fae7b778b81b686ef419f971064b5fe12fb4ead3Brian Paul 8629bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8639bf68ad963ba92b5d1e725f965979042495a5313Brian Paul 8649bf68ad963ba92b5d1e725f965979042495a5313Brian Paul/* 8654003bde6fffc3e5b9e1a115ba952b988dffb099aBrian * Render an RGBA triangle with arbitrary attributes. 866e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 8674003bde6fffc3e5b9e1a115ba952b988dffb099aBrian#define NAME general_triangle 868e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 869e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_RGB 1 870e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_ALPHA 1 8718a8a5bd104e8cd9362415db77d5f6a3945939589Brian#define INTERP_ATTRIBS 1 872a803b0c891404dcd7c376e91f6a033cd4e42abc3Brian Paul#define RENDER_SPAN( span ) _swrast_write_rgba_span(ctx, &span); 873e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 874e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 875e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 876f1e236987829393c81dc86ea19cb49eefe190317Brian Paul 877e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 878b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul/* 879b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul * Special tri function for occlusion testing 880b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul */ 881bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul#define NAME occlusion_zless_16_triangle 882e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#define INTERP_Z 1 88323ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul#define SETUP_CODE \ 884bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul struct gl_renderbuffer *rb = \ 885bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; \ 88623ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul struct gl_query_object *q = ctx->Query.CurrentOcclusionObject; \ 88723ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul ASSERT(ctx->Depth.Test); \ 88823ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul ASSERT(!ctx->Depth.Mask); \ 88923ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul ASSERT(ctx->Depth.Func == GL_LESS); \ 890bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul assert(rb->Format == MESA_FORMAT_Z16); \ 89123ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul if (!q) { \ 89223ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul return; \ 893cdf2da368d180205df3573697b51b8764048ad6eBrian Paul } 8940349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul#define RENDER_SPAN( span ) \ 895bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul { \ 8960349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul GLuint i; \ 8970349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul const GLushort *zRow = (const GLushort *) \ 8987cf2d75d4f5397629a058b9ea9b20df688b79e5cBrian Paul _swrast_pixel_address(rb, span.x, span.y); \ 8990349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul for (i = 0; i < span.end; i++) { \ 9003e37bafab0a339021354b9c78f983d05d433d735Brian Paul GLuint z = FixedToDepth(span.z); \ 9010349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul if (z < zRow[i]) { \ 90223ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul q->Result++; \ 9030349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul } \ 9040349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul span.z += span.zStep; \ 9050349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul } \ 906e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 907e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_tritemp.h" 908e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 909cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 910cdf2da368d180205df3573697b51b8764048ad6eBrian Paul 911cdf2da368d180205df3573697b51b8764048ad6eBrian Paulstatic void 912f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergnodraw_triangle( struct gl_context *ctx, 913cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v0, 914cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v1, 915cdf2da368d180205df3573697b51b8764048ad6eBrian Paul const SWvertex *v2 ) 91647489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell{ 91747489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell (void) (ctx && v0 && v1 && v2); 91847489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell} 919e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 920f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul 921f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul/* 922f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * This is used when separate specular color is enabled, but not 923fa6b2fba7ad0504a63ab262f602c6f50f336ca1bBrian Paul * texturing. We add the specular color to the primary color, 924f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * draw the triangle, then restore the original primary color. 925f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul * Inefficient, but seldom needed. 926f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul */ 9279e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrianvoid 928f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_swrast_add_spec_terms_triangle(struct gl_context *ctx, const SWvertex *v0, 9299e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian const SWvertex *v1, const SWvertex *v2) 93046b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell{ 93146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv0 = (SWvertex *)v0; /* drop const qualifier */ 93246b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv1 = (SWvertex *)v1; 93346b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv2 = (SWvertex *)v2; 934f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul GLfloat rSum, gSum, bSum; 9359e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLchan cSave[3][4]; 9369e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian 937f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* save original colors */ 9389e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( cSave[0], ncv0->color ); 9399e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( cSave[1], ncv1->color ); 9409e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( cSave[2], ncv2->color ); 941f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v0 */ 9429e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian rSum = CHAN_TO_FLOAT(ncv0->color[0]) + ncv0->attrib[FRAG_ATTRIB_COL1][0]; 9439e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian gSum = CHAN_TO_FLOAT(ncv0->color[1]) + ncv0->attrib[FRAG_ATTRIB_COL1][1]; 9449e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian bSum = CHAN_TO_FLOAT(ncv0->color[2]) + ncv0->attrib[FRAG_ATTRIB_COL1][2]; 9459e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[0], rSum); 9469e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[1], gSum); 9479e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[2], bSum); 948f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v1 */ 9499e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian rSum = CHAN_TO_FLOAT(ncv1->color[0]) + ncv1->attrib[FRAG_ATTRIB_COL1][0]; 9509e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian gSum = CHAN_TO_FLOAT(ncv1->color[1]) + ncv1->attrib[FRAG_ATTRIB_COL1][1]; 9519e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian bSum = CHAN_TO_FLOAT(ncv1->color[2]) + ncv1->attrib[FRAG_ATTRIB_COL1][2]; 9529e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv1->color[0], rSum); 9539e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv1->color[1], gSum); 9549e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv1->color[2], bSum); 955f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* sum v2 */ 9569e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian rSum = CHAN_TO_FLOAT(ncv2->color[0]) + ncv2->attrib[FRAG_ATTRIB_COL1][0]; 9579e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian gSum = CHAN_TO_FLOAT(ncv2->color[1]) + ncv2->attrib[FRAG_ATTRIB_COL1][1]; 9589e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian bSum = CHAN_TO_FLOAT(ncv2->color[2]) + ncv2->attrib[FRAG_ATTRIB_COL1][2]; 9599e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv2->color[0], rSum); 9609e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv2->color[1], gSum); 9619e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv2->color[2], bSum); 962f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* draw */ 96346b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWRAST_CONTEXT(ctx)->SpecTriangle( ctx, ncv0, ncv1, ncv2 ); 964f47efb5ab32534fc5c42b5bc88a6b24cb514ce53Brian Paul /* restore original colors */ 9659e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( ncv0->color, cSave[0] ); 9669e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( ncv1->color, cSave[1] ); 9679e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( ncv2->color, cSave[2] ); 96846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell} 96946b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell 970e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 971e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 972e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul#ifdef DEBUG 973e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 974e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul/* record the current triangle function name */ 975fd1727bd1064ee2323c924cb4002d4d9a89780bfBrian Paulconst char *_mesa_triFuncName = NULL; 976e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 9772a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul#define USE(triFunc) \ 9782a182a98973edc9ecf2936b1288485bb2b3fa722Brian Pauldo { \ 9792a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul _mesa_triFuncName = #triFunc; \ 9802a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul /*printf("%s\n", _mesa_triFuncName);*/ \ 9812a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul swrast->Triangle = triFunc; \ 982e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul} while (0) 983e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 984e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#else 985e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 986e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul#define USE(triFunc) swrast->Triangle = triFunc; 987e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 988e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#endif 989e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 990e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 991e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 992e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 993e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 994e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Determine which triangle rendering function to use given the current 995e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * rendering context. 996e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 997e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Please update the summary flag _SWRAST_NEW_TRIANGLE if you add or 998e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * remove tests to this code. 999e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 100022144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughesvoid 1001f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_swrast_choose_triangle( struct gl_context *ctx ) 1002e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 1003cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell SWcontext *swrast = SWRAST_CONTEXT(ctx); 1004e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 100538f28665bf9fb5b2464738ca5074848ec2777ae1Gareth Hughes if (ctx->Polygon.CullFlag && 100647489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) { 1007e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(nodraw_triangle); 100847489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell return; 100947489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell } 101047489c0721348d8f5e5f17b4af63b1c601045116Keith Whitwell 1011e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->RenderMode==GL_RENDER) { 1012bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul struct gl_renderbuffer *depthRb = 1013bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; 1014e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1015e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Polygon.SmoothFlag) { 101645bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_set_aa_triangle_function(ctx); 1017cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell ASSERT(swrast->Triangle); 1018e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return; 1019e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1020e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1021b17a722ca3989e8563ee04cb2939f4835f8a171eBrian Paul /* special case for occlusion testing */ 102223ffc3a85d6172f8a98d17d7f23610bab808d84eBrian Paul if (ctx->Query.CurrentOcclusionObject && 1023e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Test && 1024e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Mask == GL_FALSE && 1025e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell ctx->Depth.Func == GL_LESS && 1026bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul !ctx->Stencil._Enabled && 1027bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul depthRb && 1028bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul depthRb->Format == MESA_FORMAT_Z16) { 10290ed9c4bc7affb7a6b9be5ff129815fccf8c3885dIan Romanick if (ctx->Color.ColorMask[0][0] == 0 && 10300ed9c4bc7affb7a6b9be5ff129815fccf8c3885dIan Romanick ctx->Color.ColorMask[0][1] == 0 && 10310ed9c4bc7affb7a6b9be5ff129815fccf8c3885dIan Romanick ctx->Color.ColorMask[0][2] == 0 && 10320ed9c4bc7affb7a6b9be5ff129815fccf8c3885dIan Romanick ctx->Color.ColorMask[0][3] == 0) { 1033bf0c0ccbc9424fc73cb17ffb9c9b5feda7d33474Brian Paul USE(occlusion_zless_16_triangle); 1034e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell return; 1035e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1036e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1037e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 10389e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian /* 10399e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian * XXX should examine swrast->_ActiveAttribMask to determine what 10409e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian * needs to be interpolated. 10419e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian */ 104212ef1fbefcee964b715783d3ade6b69b2c699ed8Brian if (ctx->Texture._EnabledCoordUnits || 10431c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace _swrast_use_fragment_program(ctx) || 10449e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian ctx->ATIFragmentShader._Enabled || 1045decc6e2a32ef49e673c081f30e19b8970155d887Brian Paul _mesa_need_secondary_color(ctx) || 10469e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian swrast->_FogEnabled) { 1047e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* Ugh, we do a _lot_ of tests to pick the best textured tri func */ 1048b7339d70237ffb460f158c61860ca225fec02e81Michal Krol const struct gl_texture_object *texObj2D; 1049cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen const struct gl_sampler_object *samp; 1050e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul const struct gl_texture_image *texImg; 1051eaf376ba354db11f7729452060570b48a029c9a0Brian Paul const struct swrast_texture_image *swImg; 105238e3675d7dc6c373366e576e3ca1a1eb966e4dacBrian Paul GLenum minFilter, magFilter, envMode; 10531f7c914ad0beea8a29c1a171c7cd1a12f2efe0faBrian Paul gl_format format; 10549818734e0148510967ca9ee0d1aa8b196b509f02Brian Paul texObj2D = ctx->Texture.Unit[0].CurrentTex[TEXTURE_2D_INDEX]; 1055cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen if (ctx->Texture.Unit[0].Sampler) 1056cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen samp = ctx->Texture.Unit[0].Sampler; 1057cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen else if (texObj2D) 1058cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen samp = &texObj2D->Sampler; 1059cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen else 1060cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen samp = NULL; 10619818734e0148510967ca9ee0d1aa8b196b509f02Brian Paul 106218fa367ac6e035341f5eb86ecc4231124b2921e3Keith Whitwell texImg = texObj2D ? texObj2D->Image[0][texObj2D->BaseLevel] : NULL; 1063eaf376ba354db11f7729452060570b48a029c9a0Brian Paul swImg = swrast_texture_image_const(texImg); 1064eaf376ba354db11f7729452060570b48a029c9a0Brian Paul 10650103d7a47a6f42d8bb7199b5bd55097e3b0b92a4Brian Paul format = texImg ? texImg->TexFormat : MESA_FORMAT_NONE; 1066cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen minFilter = texObj2D ? samp->MinFilter : GL_NONE; 1067cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen magFilter = texObj2D ? samp->MagFilter : GL_NONE; 1068e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul envMode = ctx->Texture.Unit[0].EnvMode; 1069e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul 1070c0fc0d4e5f5c246fc2459348a3d114b232d0c545Brian Paul /* First see if we can use an optimized 2-D texture function */ 10710349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul if (ctx->Texture._EnabledCoordUnits == 0x1 10721c0f1dd42a50464eeb81de4aad8eecf24b3d6c89Chad Versace && !_swrast_use_fragment_program(ctx) 10736acf1e93a291511cfb20b0e2aeda6e71ceb62a62Michal Krol && !ctx->ATIFragmentShader._Enabled 107488bb4b593576a2977b2fe36794bd4d3dbc72063eBrian Paul && ctx->Texture._EnabledUnits == 0x1 10758afe7de8deaf3c9613fd68b344de8c52b02b1879Brian Paul && ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT 1076cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen && samp->WrapS == GL_REPEAT 1077cbdc1d53542b3ecca0085399c4bb3b3371f94809Pauli Nieminen && samp->WrapT == GL_REPEAT 107854c62ba5c36f3e2b279151f5df851d2ceee15319Brian Paul && texObj2D->_Swizzle == SWIZZLE_NOOP 1079eaf376ba354db11f7729452060570b48a029c9a0Brian Paul && swImg->_IsPowerOfTwo 10800349b4b2abac65f67a638a9f8bb5d1a3d48ddf95Brian Paul && texImg->Border == 0 10816e0f9001fe3fb191c2928bd09aa9e9d05ddf4ea9Brian Paul && texImg->Width == swImg->RowStride 10823fa7dbf368bb060220e9f78e666b00d6827166a6Brian Paul && (format == MESA_FORMAT_RGB888 || format == MESA_FORMAT_RGBA8888) 1083b7339d70237ffb460f158c61860ca225fec02e81Michal Krol && minFilter == magFilter 1084b7339d70237ffb460f158c61860ca225fec02e81Michal Krol && ctx->Light.Model.ColorControl == GL_SINGLE_COLOR 10859e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian && !swrast->_FogEnabled 10862d508c1d5c53dc475e5262593dd4dac5575a6b08Brian Paul && ctx->Texture.Unit[0].EnvMode != GL_COMBINE_EXT 10872d508c1d5c53dc475e5262593dd4dac5575a6b08Brian Paul && ctx->Texture.Unit[0].EnvMode != GL_COMBINE4_NV) { 1088e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Hint.PerspectiveCorrection==GL_FASTEST) { 1089e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul if (minFilter == GL_NEAREST 10903fa7dbf368bb060220e9f78e666b00d6827166a6Brian Paul && format == MESA_FORMAT_RGB888 1091e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && (envMode == GL_REPLACE || envMode == GL_DECAL) 10929bf68ad963ba92b5d1e725f965979042495a5313Brian Paul && ((swrast->_RasterMask == (DEPTH_BIT | TEXTURE_BIT) 1093e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Depth.Func == GL_LESS 1094e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul && ctx->Depth.Mask == GL_TRUE) 10959bf68ad963ba92b5d1e725f965979042495a5313Brian Paul || swrast->_RasterMask == TEXTURE_BIT) 1096e6e0ba781b0a6a1b8747cae49ca622a6a61b1bf8Brian Paul && ctx->Polygon.StippleFlag == GL_FALSE 10979c4fd26bcab7e4a5bd97a56deff89b8ea0ae5f1dBrian Paul && ctx->DrawBuffer->Visual.depthBits <= 16) { 10989bf68ad963ba92b5d1e725f965979042495a5313Brian Paul if (swrast->_RasterMask == (DEPTH_BIT | TEXTURE_BIT)) { 1099e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(simple_z_textured_triangle); 1100e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1101e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1102e9313a64c182701d22a5c6d2a82863c658e7424fBrian Paul USE(simple_textured_triangle); 1103e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1104e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1105e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 11069e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#if CHAN_BITS != 8 11074003bde6fffc3e5b9e1a115ba952b988dffb099aBrian USE(general_triangle); 110896385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#else 110959b29516af2d4d8f83723559921a3709eb77a7d2Chia-I Wu if (format == MESA_FORMAT_RGBA8888 && !_mesa_little_endian()) { 1110086f9fc0e2aef27f54eda87c733685500555bf20Brian Paul /* We only handle RGBA8888 correctly on little endian 1111086f9fc0e2aef27f54eda87c733685500555bf20Brian Paul * in the optimized code above. 1112086f9fc0e2aef27f54eda87c733685500555bf20Brian Paul */ 1113086f9fc0e2aef27f54eda87c733685500555bf20Brian Paul USE(general_triangle); 111459b29516af2d4d8f83723559921a3709eb77a7d2Chia-I Wu } 111559b29516af2d4d8f83723559921a3709eb77a7d2Chia-I Wu else { 1116086f9fc0e2aef27f54eda87c733685500555bf20Brian Paul USE(affine_textured_triangle); 111759b29516af2d4d8f83723559921a3709eb77a7d2Chia-I Wu } 1118f431a3fb4dc1bf860203d79e54657e3a62bc50dfBrian Paul#endif 1119e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1120e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1121e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 11229e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#if CHAN_BITS != 8 11234003bde6fffc3e5b9e1a115ba952b988dffb099aBrian USE(general_triangle); 112496385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#else 112596385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul USE(persp_textured_triangle); 112696385fa15569e25cd0977e678c0ff3bdab6ef316Brian Paul#endif 1127e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1128e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1129e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 113031f12f504e61cb2ad65b8890a68eb7154edcb64bBrian Paul /* general case textured triangles */ 11314003bde6fffc3e5b9e1a115ba952b988dffb099aBrian USE(general_triangle); 1132e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1133e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1134e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 11359e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian ASSERT(!swrast->_FogEnabled); 1136decc6e2a32ef49e673c081f30e19b8970155d887Brian Paul ASSERT(!_mesa_need_secondary_color(ctx)); 1137e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Light.ShadeModel==GL_SMOOTH) { 1138e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* smooth shaded, no texturing, stippled or some raster ops */ 11399e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#if CHAN_BITS != 8 11409e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(general_triangle); 11419e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#else 11429e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(smooth_rgba_triangle); 11439e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#endif 1144e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1145e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1146e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* flat shaded, no texturing, stippled or some raster ops */ 11479e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#if CHAN_BITS != 8 11489e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(general_triangle); 11499e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#else 115097693436a5740fb56c29fcd1cb0a1aa562349902Brian USE(flat_rgba_triangle); 11519e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#endif 1152e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1153e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1154e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1155e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else if (ctx->RenderMode==GL_FEEDBACK) { 115645bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_feedback_triangle); 1157e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1158e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 1159e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* GL_SELECT mode */ 116045bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_select_triangle); 1161e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 1162e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 1163