From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- nx-X11/extras/Mesa/src/mesa/swrast/s_lines.c | 338 +++++++++++++++++++++++++++ 1 file changed, 338 insertions(+) create mode 100644 nx-X11/extras/Mesa/src/mesa/swrast/s_lines.c (limited to 'nx-X11/extras/Mesa/src/mesa/swrast/s_lines.c') diff --git a/nx-X11/extras/Mesa/src/mesa/swrast/s_lines.c b/nx-X11/extras/Mesa/src/mesa/swrast/s_lines.c new file mode 100644 index 000000000..dccc92cbd --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/swrast/s_lines.c @@ -0,0 +1,338 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +#include "glheader.h" +#include "context.h" +#include "colormac.h" +#include "macros.h" +#include "nvfragprog.h" +#include "s_aaline.h" +#include "s_context.h" +#include "s_depth.h" +#include "s_feedback.h" +#include "s_lines.h" +#include "s_span.h" + + +/* + * Init the mask[] array to implement a line stipple. + */ +static void +compute_stipple_mask( GLcontext *ctx, GLuint len, GLubyte mask[] ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLuint i; + + for (i = 0; i < len; i++) { + GLuint bit = (swrast->StippleCounter / ctx->Line.StippleFactor) & 0xf; + if ((1 << bit) & ctx->Line.StipplePattern) { + mask[i] = GL_TRUE; + } + else { + mask[i] = GL_FALSE; + } + swrast->StippleCounter++; + } +} + + +/* + * To draw a wide line we can simply redraw the span N times, side by side. + */ +static void +draw_wide_line( GLcontext *ctx, struct sw_span *span, GLboolean xMajor ) +{ + GLint width, start; + + ASSERT(span->end < MAX_WIDTH); + + width = (GLint) CLAMP( ctx->Line._Width, MIN_LINE_WIDTH, MAX_LINE_WIDTH ); + + if (width & 1) + start = width / 2; + else + start = width / 2 - 1; + + if (xMajor) { + GLint *y = span->array->y; + GLuint i; + GLint w; + for (w = 0; w < width; w++) { + if (w == 0) { + for (i = 0; i < span->end; i++) + y[i] -= start; + } + else { + for (i = 0; i < span->end; i++) + y[i]++; + } + if (ctx->Visual.rgbMode) + _swrast_write_rgba_span(ctx, span); + else + _swrast_write_index_span(ctx, span); + } + } + else { + GLint *x = span->array->x; + GLuint i; + GLint w; + for (w = 0; w < width; w++) { + if (w == 0) { + for (i = 0; i < span->end; i++) + x[i] -= start; + } + else { + for (i = 0; i < span->end; i++) + x[i]++; + } + if (ctx->Visual.rgbMode) + _swrast_write_rgba_span(ctx, span); + else + _swrast_write_index_span(ctx, span); + } + } +} + + + +/**********************************************************************/ +/***** Rasterization *****/ +/**********************************************************************/ + +/* Simple color index line (no stipple, width=1, no Z, no fog, no tex)*/ +#define NAME simple_ci_line +#define INTERP_INDEX +#define RENDER_SPAN(span) _swrast_write_index_span(ctx, &span) +#include "s_linetemp.h" + +/* Simple RGBA index line (no stipple, width=1, no Z, no fog, no tex)*/ +#define NAME simple_rgba_line +#define INTERP_RGBA +#define RENDER_SPAN(span) _swrast_write_rgba_span(ctx, &span); +#include "s_linetemp.h" + + +/* Z, fog, wide, stipple color index line */ +#define NAME general_ci_line +#define INTERP_INDEX +#define INTERP_Z +#define INTERP_FOG +#define RENDER_SPAN(span) \ + if (ctx->Line.StippleFlag) { \ + span.arrayMask |= SPAN_MASK; \ + compute_stipple_mask(ctx, span.end, span.array->mask); \ + } \ + if (ctx->Line._Width > 1.0) { \ + draw_wide_line(ctx, &span, (GLboolean)(dx > dy)); \ + } \ + else { \ + _swrast_write_index_span(ctx, &span); \ + } +#include "s_linetemp.h" + + +/* Z, fog, wide, stipple RGBA line */ +#define NAME general_rgba_line +#define INTERP_RGBA +#define INTERP_Z +#define INTERP_FOG +#define RENDER_SPAN(span) \ + if (ctx->Line.StippleFlag) { \ + span.arrayMask |= SPAN_MASK; \ + compute_stipple_mask(ctx, span.end, span.array->mask); \ + } \ + if (ctx->Line._Width > 1.0) { \ + draw_wide_line(ctx, &span, (GLboolean)(dx > dy)); \ + } \ + else { \ + _swrast_write_rgba_span(ctx, &span); \ + } +#include "s_linetemp.h" + + +/* Single-texture line, w/ fog, Z, specular, etc. */ +#define NAME textured_line +#define INTERP_RGBA +#define INTERP_Z +#define INTERP_FOG +#define INTERP_TEX +#define RENDER_SPAN(span) \ + if (ctx->Line.StippleFlag) { \ + span.arrayMask |= SPAN_MASK; \ + compute_stipple_mask(ctx, span.end, span.array->mask); \ + } \ + if (ctx->Line._Width > 1.0) { \ + draw_wide_line(ctx, &span, (GLboolean)(dx > dy)); \ + } \ + else { \ + _swrast_write_rgba_span(ctx, &span); \ + } +#include "s_linetemp.h" + + +/* Multi-texture or separate specular line, w/ fog, Z, specular, etc. */ +#define NAME multitextured_line +#define INTERP_RGBA +#define INTERP_SPEC +#define INTERP_Z +#define INTERP_FOG +#define INTERP_MULTITEX +#define RENDER_SPAN(span) \ + if (ctx->Line.StippleFlag) { \ + span.arrayMask |= SPAN_MASK; \ + compute_stipple_mask(ctx, span.end, span.array->mask); \ + } \ + if (ctx->Line._Width > 1.0) { \ + draw_wide_line(ctx, &span, (GLboolean)(dx > dy)); \ + } \ + else { \ + _swrast_write_rgba_span(ctx, &span); \ + } +#include "s_linetemp.h" + + + +void +_swrast_add_spec_terms_line( GLcontext *ctx, + const SWvertex *v0, + const SWvertex *v1 ) +{ + SWvertex *ncv0 = (SWvertex *)v0; + SWvertex *ncv1 = (SWvertex *)v1; + GLchan c[2][4]; + COPY_CHAN4( c[0], ncv0->color ); + COPY_CHAN4( c[1], ncv1->color ); + ACC_3V( ncv0->color, ncv0->specular ); + ACC_3V( ncv1->color, ncv1->specular ); + SWRAST_CONTEXT(ctx)->SpecLine( ctx, ncv0, ncv1 ); + COPY_CHAN4( ncv0->color, c[0] ); + COPY_CHAN4( ncv1->color, c[1] ); +} + + +#ifdef DEBUG +extern void +_mesa_print_line_function(GLcontext *ctx); /* silence compiler warning */ +void +_mesa_print_line_function(GLcontext *ctx) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + + _mesa_printf("Line Func == "); + if (swrast->Line == simple_ci_line) + _mesa_printf("simple_ci_line\n"); + else if (swrast->Line == simple_rgba_line) + _mesa_printf("simple_rgba_line\n"); + else if (swrast->Line == general_ci_line) + _mesa_printf("general_ci_line\n"); + else if (swrast->Line == general_rgba_line) + _mesa_printf("general_rgba_line\n"); + else if (swrast->Line == textured_line) + _mesa_printf("textured_line\n"); + else if (swrast->Line == multitextured_line) + _mesa_printf("multitextured_line\n"); + else + _mesa_printf("Driver func %p\n", (void *(*)()) swrast->Line); +} +#endif + + + +#ifdef DEBUG + +/* record the current line function name */ +static const char *lineFuncName = NULL; + +#define USE(lineFunc) \ +do { \ + lineFuncName = #lineFunc; \ + /*_mesa_printf("%s\n", lineFuncName);*/ \ + swrast->Line = lineFunc; \ +} while (0) + +#else + +#define USE(lineFunc) swrast->Line = lineFunc + +#endif + + + +/* + * Determine which line drawing function to use given the current + * rendering context. + * + * Please update the summary flag _SWRAST_NEW_LINE if you add or remove + * tests to this code. + */ +void +_swrast_choose_line( GLcontext *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + const GLboolean rgbmode = ctx->Visual.rgbMode; + + if (ctx->RenderMode == GL_RENDER) { + if (ctx->Line.SmoothFlag) { + /* antialiased lines */ + _swrast_choose_aa_line_function(ctx); + ASSERT(swrast->Line); + } + else if (ctx->Texture._EnabledCoordUnits) { + /* textured lines */ + if (ctx->Texture._EnabledCoordUnits > 0x1 + || NEED_SECONDARY_COLOR(ctx)) { + /* multi-texture and/or separate specular color */ + USE(multitextured_line); + } + else { + USE(textured_line); + } + } + else if (ctx->Depth.Test || swrast->_FogEnabled || ctx->Line._Width != 1.0 + || ctx->Line.StippleFlag) { + /* no texture, but Z, fog, width>1, stipple, etc. */ + if (rgbmode) + USE(general_rgba_line); + else + USE(general_ci_line); + } + else { + /* simplest lines */ + if (rgbmode) + USE(simple_rgba_line); + else + USE(simple_ci_line); + } + } + else if (ctx->RenderMode == GL_FEEDBACK) { + USE(_swrast_feedback_line); + } + else { + ASSERT(ctx->RenderMode == GL_SELECT); + USE(_swrast_select_line); + } + + /*_mesa_print_line_function(ctx);*/ +} -- cgit v1.2.3