diff options
Diffstat (limited to 'src/mesa/drivers/svga/svgamesa8.c')
| -rw-r--r-- | src/mesa/drivers/svga/svgamesa8.c | 56 |
1 files changed, 34 insertions, 22 deletions
diff --git a/src/mesa/drivers/svga/svgamesa8.c b/src/mesa/drivers/svga/svgamesa8.c index dc9df3f4128..048ad988597 100644 --- a/src/mesa/drivers/svga/svgamesa8.c +++ b/src/mesa/drivers/svga/svgamesa8.c @@ -1,8 +1,8 @@ -/* $Id: svgamesa8.c,v 1.3 2000/01/23 17:49:54 brianp Exp $ */ +/* $Id: svgamesa8.c,v 1.4 2000/01/25 00:03:02 brianp Exp $ */ /* * Mesa 3-D graphics library - * Version: 3.2 + * Version: 3.3 * Copyright (C) 1995-2000 Brian Paul * * This library is free software; you can redistribute it and/or @@ -31,25 +31,22 @@ #include "svgapix.h" +#include "svgamesa8.h" -int __svga_drawpixel8(int x, int y, unsigned long c) +static void __svga_drawpixel8(int x, int y, unsigned long c) { unsigned long offset; - y = SVGAInfo->height-y-1; offset = y * SVGAInfo->linewidth + x; - SVGABuffer.BackBuffer[offset]=c; - - return 0; + SVGABuffer.DrawBuffer[offset]=c; } -unsigned long __svga_getpixel8(int x, int y) +static unsigned long __svga_getpixel8(int x, int y) { unsigned long offset; - y = SVGAInfo->height-y-1; offset = y * SVGAInfo->linewidth + x; - return SVGABuffer.BackBuffer[offset]; + return SVGABuffer.ReadBuffer[offset]; } void __set_index8( GLcontext *ctx, GLuint index ) @@ -67,18 +64,33 @@ GLbitfield __clear8( GLcontext *ctx, GLbitfield mask, GLboolean all, { int i,j; - if (mask & GL_COLOR_BUFFER_BIT) { - - if (all) - { - memset(SVGABuffer.BackBuffer,SVGAMesa->clear_index,SVGABuffer.BufferSize); - } else { - for (i=x;i<width;i++) - for (j=y;j<height;j++) - __svga_drawpixel8(i,j,SVGAMesa->clear_index); - } - } - return mask & (~GL_COLOR_BUFFER_BIT); + if (mask & DD_FRONT_LEFT_BIT) { + if (all) { + memset(SVGABuffer.FrontBuffer, SVGAMesa->clear_index, SVGABuffer.BufferSize); + } + else { + GLubyte *tmp = SVGABuffer.DrawBuffer; + SVGABuffer.DrawBuffer = SVGABuffer.FrontBuffer; + for (i=x;i<width;i++) + for (j=y;j<height;j++) + __svga_drawpixel8(i,j,SVGAMesa->clear_index); + SVGABuffer.DrawBuffer = tmp; + } + } + if (mask & DD_BACK_LEFT_BIT) { + if (all) { + memset(SVGABuffer.BackBuffer, SVGAMesa->clear_index, SVGABuffer.BufferSize); + } + else { + GLubyte *tmp = SVGABuffer.DrawBuffer; + SVGABuffer.DrawBuffer = SVGABuffer.BackBuffer; + for (i=x;i<width;i++) + for (j=y;j<height;j++) + __svga_drawpixel8(i,j,SVGAMesa->clear_index); + SVGABuffer.DrawBuffer = tmp; + } + } + return mask & (~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT)); } void __write_ci32_span8( const GLcontext *ctx, GLuint n, GLint x, GLint y, |