s_lines.c revision efda5cb6263631175aa2efe46df9322b3c5775ee
1e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 2e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Mesa 3-D graphics library 3efda5cb6263631175aa2efe46df9322b3c5775eeBrian * Version: 7.1 422144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 59ede048127ea71282fd97e01516dedcfb03e2a23Brian * 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#include "glheader.h" 2729b4076f9acff96a867760fc885f5eaeb7586977Brian Paul#include "context.h" 2846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell#include "colormac.h" 29e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "macros.h" 300070d398d13759adc519f9bc764ffd39bc88890eBrian Paul#include "s_aaline.h" 31cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_context.h" 32e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_depth.h" 33cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell#include "s_feedback.h" 34b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul#include "s_lines.h" 35b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul#include "s_span.h" 36e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 37e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 38b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul/* 39b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul * Init the mask[] array to implement a line stipple. 40b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul */ 41b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paulstatic void 42b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paulcompute_stipple_mask( GLcontext *ctx, GLuint len, GLubyte mask[] ) 43b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul{ 44b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul SWcontext *swrast = SWRAST_CONTEXT(ctx); 45b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul GLuint i; 46e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 47b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul for (i = 0; i < len; i++) { 48b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul GLuint bit = (swrast->StippleCounter / ctx->Line.StippleFactor) & 0xf; 49b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul if ((1 << bit) & ctx->Line.StipplePattern) { 50b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul mask[i] = GL_TRUE; 51b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 52b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else { 53b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul mask[i] = GL_FALSE; 54b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 55b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul swrast->StippleCounter++; 56b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 57b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul} 58e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 59e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 60e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 61b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul * To draw a wide line we can simply redraw the span N times, side by side. 62e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 63b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paulstatic void 64cdb27e8242215271364602995d85607cfc06d441Brian Pauldraw_wide_line( GLcontext *ctx, SWspan *span, GLboolean xMajor ) 65e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 66af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian const GLint width = (GLint) CLAMP(ctx->Line.Width, 67af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian ctx->Const.MinLineWidth, 68af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian ctx->Const.MaxLineWidth); 69af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian GLint start; 70cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell 71b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul ASSERT(span->end < MAX_WIDTH); 72e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 73b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul if (width & 1) 74b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul start = width / 2; 75b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else 76b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul start = width / 2 - 1; 77b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul 78b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul if (xMajor) { 7977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint *y = span->array->y; 80a670c1280b78e6da3b298b61f623e4c733c6be94Brian Paul GLuint i; 81a670c1280b78e6da3b298b61f623e4c733c6be94Brian Paul GLint w; 82b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul for (w = 0; w < width; w++) { 83b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul if (w == 0) { 84b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul for (i = 0; i < span->end; i++) 8577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul y[i] -= start; 86b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 87b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else { 88b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul for (i = 0; i < span->end; i++) 8977df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul y[i]++; 90b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 91a803b0c891404dcd7c376e91f6a033cd4e42abc3Brian Paul if (ctx->Visual.rgbMode) 9245bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 93b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else 9445bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_index_span(ctx, span); 95b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 96b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 97b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else { 9877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLint *x = span->array->x; 99a670c1280b78e6da3b298b61f623e4c733c6be94Brian Paul GLuint i; 100a670c1280b78e6da3b298b61f623e4c733c6be94Brian Paul GLint w; 101b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul for (w = 0; w < width; w++) { 102b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul if (w == 0) { 103b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul for (i = 0; i < span->end; i++) 10477df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul x[i] -= start; 105b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 106b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else { 107b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul for (i = 0; i < span->end; i++) 10877df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul x[i]++; 109b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 110a803b0c891404dcd7c376e91f6a033cd4e42abc3Brian Paul if (ctx->Visual.rgbMode) 11145bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, span); 112b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else 11345bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_index_span(ctx, span); 114b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 115b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 116e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 117e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 118e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 119e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 120b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul/**********************************************************************/ 121b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul/***** Rasterization *****/ 122b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul/**********************************************************************/ 123b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul 12422a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul/* Simple color index line (no stipple, width=1, no Z, no fog, no tex)*/ 1259e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#define NAME simple_no_z_ci_line 12622a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_INDEX 12745bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN(span) _swrast_write_index_span(ctx, &span) 128e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_linetemp.h" 129e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 13022a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul/* Simple RGBA index line (no stipple, width=1, no Z, no fog, no tex)*/ 1319e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#define NAME simple_no_z_rgba_line 13222a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_RGBA 13345bc887da226403f2c41077e40ca38b6f60f1359Brian Paul#define RENDER_SPAN(span) _swrast_write_rgba_span(ctx, &span); 134e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_linetemp.h" 135e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 136e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 13722a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul/* Z, fog, wide, stipple color index line */ 1389e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#define NAME ci_line 13922a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_INDEX 14022a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_Z 1419e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#define INTERP_ATTRIBS /* for fog */ 14222a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define RENDER_SPAN(span) \ 14322a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul if (ctx->Line.StippleFlag) { \ 14422a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul span.arrayMask |= SPAN_MASK; \ 145dc24230de7f913969b52dee3579bb8fa3d50a8c0Karl Schultz compute_stipple_mask(ctx, span.end, span.array->mask); \ 14622a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul } \ 147af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian if (ctx->Line.Width > 1.0) { \ 148dc24230de7f913969b52dee3579bb8fa3d50a8c0Karl Schultz draw_wide_line(ctx, &span, (GLboolean)(dx > dy)); \ 14922a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul } \ 15022a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul else { \ 15145bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_index_span(ctx, &span); \ 152b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul } 153e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_linetemp.h" 154e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 155e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 15622a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul/* Z, fog, wide, stipple RGBA line */ 1579e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#define NAME rgba_line 15822a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_RGBA 15922a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_Z 16022a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define RENDER_SPAN(span) \ 16122a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul if (ctx->Line.StippleFlag) { \ 16222a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul span.arrayMask |= SPAN_MASK; \ 16322a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul compute_stipple_mask(ctx, span.end, span.array->mask); \ 16422a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul } \ 165af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian if (ctx->Line.Width > 1.0) { \ 166dc24230de7f913969b52dee3579bb8fa3d50a8c0Karl Schultz draw_wide_line(ctx, &span, (GLboolean)(dx > dy)); \ 16722a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul } \ 16822a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul else { \ 16945bc887da226403f2c41077e40ca38b6f60f1359Brian Paul _swrast_write_rgba_span(ctx, &span); \ 170e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 171e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_linetemp.h" 172b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul 173e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 1749e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian/* General-purpose line (any/all features). */ 1759e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian#define NAME general_line 17622a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_RGBA 17722a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define INTERP_Z 1789ede048127ea71282fd97e01516dedcfb03e2a23Brian#define INTERP_ATTRIBS 17922a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul#define RENDER_SPAN(span) \ 18022a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul if (ctx->Line.StippleFlag) { \ 18122a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul span.arrayMask |= SPAN_MASK; \ 18222a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul compute_stipple_mask(ctx, span.end, span.array->mask); \ 18322a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul } \ 184af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian if (ctx->Line.Width > 1.0) { \ 185dc24230de7f913969b52dee3579bb8fa3d50a8c0Karl Schultz draw_wide_line(ctx, &span, (GLboolean)(dx > dy)); \ 18622a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul } \ 18722a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul else { \ 188a803b0c891404dcd7c376e91f6a033cd4e42abc3Brian Paul _swrast_write_rgba_span(ctx, &span); \ 189e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 190e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_linetemp.h" 191b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul 192e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 193e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 19422a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paulvoid 1959e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian_swrast_add_spec_terms_line(GLcontext *ctx, 1969e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian const SWvertex *v0, const SWvertex *v1) 19746b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell{ 19846b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv0 = (SWvertex *)v0; 19946b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWvertex *ncv1 = (SWvertex *)v1; 2009e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLfloat rSum, gSum, bSum; 2019e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLchan cSave[2][4]; 2029e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian 2039e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian /* save original colors */ 2049e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4(cSave[0], ncv0->color); 2059e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4(cSave[1], ncv1->color); 2069e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian /* sum v0 */ 2079e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian rSum = CHAN_TO_FLOAT(ncv0->color[0]) + ncv0->attrib[FRAG_ATTRIB_COL1][0]; 2089e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian gSum = CHAN_TO_FLOAT(ncv0->color[1]) + ncv0->attrib[FRAG_ATTRIB_COL1][1]; 2099e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian bSum = CHAN_TO_FLOAT(ncv0->color[2]) + ncv0->attrib[FRAG_ATTRIB_COL1][2]; 2109e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[0], rSum); 2119e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[1], gSum); 2129e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[2], bSum); 2139e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian /* sum v1 */ 2149e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian rSum = CHAN_TO_FLOAT(ncv1->color[0]) + ncv1->attrib[FRAG_ATTRIB_COL1][0]; 2159e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian gSum = CHAN_TO_FLOAT(ncv1->color[1]) + ncv1->attrib[FRAG_ATTRIB_COL1][1]; 2169e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian bSum = CHAN_TO_FLOAT(ncv1->color[2]) + ncv1->attrib[FRAG_ATTRIB_COL1][2]; 2179e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv1->color[0], rSum); 2189e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv1->color[1], gSum); 2199e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian UNCLAMPED_FLOAT_TO_CHAN(ncv1->color[2], bSum); 2209e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian /* draw */ 22146b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell SWRAST_CONTEXT(ctx)->SpecLine( ctx, ncv0, ncv1 ); 2229e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian /* restore original colors */ 2239e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( ncv0->attrib[FRAG_ATTRIB_COL0], cSave[0] ); 2249e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian COPY_CHAN4( ncv1->attrib[FRAG_ATTRIB_COL0], cSave[1] ); 22546b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell} 22646b0988c673b28e072fd0cbf477632a9ab6f9f18Keith Whitwell 227e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 228e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 229233aafbb30594d0193b00705d0532be97060ebd1Brian Paul#ifdef DEBUG 230233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 231233aafbb30594d0193b00705d0532be97060ebd1Brian Paul/* record the current line function name */ 232233aafbb30594d0193b00705d0532be97060ebd1Brian Paulstatic const char *lineFuncName = NULL; 233233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 234233aafbb30594d0193b00705d0532be97060ebd1Brian Paul#define USE(lineFunc) \ 235233aafbb30594d0193b00705d0532be97060ebd1Brian Pauldo { \ 236233aafbb30594d0193b00705d0532be97060ebd1Brian Paul lineFuncName = #lineFunc; \ 23768a7ee5cbbc93c0e746dc843e0fcc1e65ad1baf6Brian Paul /*_mesa_printf("%s\n", lineFuncName);*/ \ 238233aafbb30594d0193b00705d0532be97060ebd1Brian Paul swrast->Line = lineFunc; \ 239233aafbb30594d0193b00705d0532be97060ebd1Brian Paul} while (0) 240233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 241233aafbb30594d0193b00705d0532be97060ebd1Brian Paul#else 242233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 243c123a9b2edc5852cb50485f344219508254081a8Brian Paul#define USE(lineFunc) swrast->Line = lineFunc 244233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 245233aafbb30594d0193b00705d0532be97060ebd1Brian Paul#endif 246233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 247233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 248233aafbb30594d0193b00705d0532be97060ebd1Brian Paul 2499e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian/** 250e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Determine which line drawing function to use given the current 251e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * rendering context. 252e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * 253e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Please update the summary flag _SWRAST_NEW_LINE if you add or remove 254e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * tests to this code. 255e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 256e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwellvoid 257cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell_swrast_choose_line( GLcontext *ctx ) 258e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell{ 259cd03ed4f54444d96e4e47cdb118a3dfd94d92bb0Keith Whitwell SWcontext *swrast = SWRAST_CONTEXT(ctx); 260b6bcae5698df88f7730d40004ce7ce0462e97a20Brian Paul const GLboolean rgbmode = ctx->Visual.rgbMode; 2619e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian GLboolean specular = (ctx->Fog.ColorSumEnabled || 2629e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian (ctx->Light.Enabled && 2639e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)); 264e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 265b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul if (ctx->RenderMode == GL_RENDER) { 266e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell if (ctx->Line.SmoothFlag) { 267e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell /* antialiased lines */ 2680070d398d13759adc519f9bc764ffd39bc88890eBrian Paul _swrast_choose_aa_line_function(ctx); 26964b4298181373d64ef2226935f70e9062536de8bBrian Paul ASSERT(swrast->Line); 270e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 271ccea3ff8a9eae16d2ca11b9cedef1318cffe3fb4Brian else if (ctx->Texture._EnabledCoordUnits 2729e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian || ctx->FragmentProgram._Current 2739e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian || swrast->_FogEnabled 2749e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian || specular) { 2759e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(general_line); 276e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 2779e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian else if (ctx->Depth.Test 278af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian || ctx->Line.Width != 1.0 27922a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul || ctx->Line.StippleFlag) { 28022a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul /* no texture, but Z, fog, width>1, stipple, etc. */ 28122a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul if (rgbmode) 282efda5cb6263631175aa2efe46df9322b3c5775eeBrian#if CHAN_BITS == 32 283efda5cb6263631175aa2efe46df9322b3c5775eeBrian USE(general_line); 284efda5cb6263631175aa2efe46df9322b3c5775eeBrian#else 2859e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(rgba_line); 286efda5cb6263631175aa2efe46df9322b3c5775eeBrian#endif 28722a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul else 2889e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(ci_line); 28922a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul } 290e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 2919e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian ASSERT(!ctx->Depth.Test); 292af2aa8e9cf88a9ee3ec338eddc9a47bf2f142cb7Brian ASSERT(ctx->Line.Width == 1.0); 2939e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian /* simple lines */ 29422a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul if (rgbmode) 2959e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(simple_no_z_rgba_line); 29622a47c5251ee7b91dc8f7f4f7dbeb3ad5a117b70Brian Paul else 2979e8a961dd7d7b717a9fb4ecdea1c1b60ea355efeBrian USE(simple_no_z_ci_line); 298e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 299e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 300b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul else if (ctx->RenderMode == GL_FEEDBACK) { 30145bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_feedback_line); 302e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 303e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell else { 304b37a084357dd08573b86d6d8c5ba43d65bdc1bd7Brian Paul ASSERT(ctx->RenderMode == GL_SELECT); 30545bc887da226403f2c41077e40ca38b6f60f1359Brian Paul USE(_swrast_select_line); 306e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell } 307e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell} 308