diff options
Diffstat (limited to 'src/mesa/drivers/svga/svgamesa15.c')
| -rw-r--r-- | src/mesa/drivers/svga/svgamesa15.c | 64 |
1 files changed, 40 insertions, 24 deletions
diff --git a/src/mesa/drivers/svga/svgamesa15.c b/src/mesa/drivers/svga/svgamesa15.c index 80966d7ca49..bc352878f99 100644 --- a/src/mesa/drivers/svga/svgamesa15.c +++ b/src/mesa/drivers/svga/svgamesa15.c @@ -1,8 +1,8 @@ -/* $Id: svgamesa15.c,v 1.3 2000/01/23 17:49:54 brianp Exp $ */ +/* $Id: svgamesa15.c,v 1.4 2000/01/25 00:03:01 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 @@ -30,25 +30,21 @@ #ifdef SVGA #include "svgapix.h" +#include "svgamesa15.h" -GLshort * shortBuffer; - -int __svga_drawpixel15(int x, int y, unsigned long c) +static void __svga_drawpixel15(int x, int y, unsigned long c) { unsigned long offset; - - shortBuffer=(void *)SVGABuffer.BackBuffer; + GLshort *shortBuffer=(void *)SVGABuffer.DrawBuffer; y = SVGAInfo->height-y-1; offset = y * SVGAInfo->width + x; shortBuffer[offset]=c; - return 0; } -unsigned long __svga_getpixel15(int x, int y) +static unsigned long __svga_getpixel15(int x, int y) { unsigned long offset; - - shortBuffer=(void *)SVGABuffer.BackBuffer; + GLshort *shortBuffer=(void *)SVGABuffer.ReadBuffer; y = SVGAInfo->height-y-1; offset = y * SVGAInfo->width + x; return shortBuffer[offset]; @@ -73,19 +69,39 @@ void __clear_color15( GLcontext *ctx, GLbitfield __clear15( GLcontext *ctx, GLbitfield mask, GLboolean all, GLint x, GLint y, GLint width, GLint height ) { - int i,j; - - if (mask & GL_COLOR_BUFFER_BIT) { - shortBuffer=(void *)SVGABuffer.BackBuffer; - if (all) { - for (i=0;i<SVGABuffer.BufferSize / 2;i++) shortBuffer[i]=SVGAMesa->clear_hicolor; - } else { - for (i=x;i<width;i++) - for (j=y;j<height;j++) - __svga_drawpixel15(i,j,SVGAMesa->clear_hicolor); - } - } - return mask & (~GL_COLOR_BUFFER_BIT); + int i, j; + + if (mask & DD_FRONT_LEFT_BIT) { + GLshort *shortBuffer=(void *)SVGABuffer.FrontBuffer; + if (all) { + for (i=0;i<SVGABuffer.BufferSize / 2;i++) + shortBuffer[i]=SVGAMesa->clear_hicolor; + } + else { + GLubyte *tmp = SVGABuffer.DrawBuffer; + SVGABuffer.DrawBuffer = SVGABuffer.FrontBuffer; + for (i=x;i<width;i++) + for (j=y;j<height;j++) + __svga_drawpixel15(i,j,SVGAMesa->clear_hicolor); + SVGABuffer.DrawBuffer = tmp; + } + } + if (mask & DD_BACK_LEFT_BIT) { + GLshort *shortBuffer=(void *)SVGABuffer.BackBuffer; + if (all) { + for (i=0;i<SVGABuffer.BufferSize / 2;i++) + shortBuffer[i]=SVGAMesa->clear_hicolor; + } + else { + GLubyte *tmp = SVGABuffer.DrawBuffer; + SVGABuffer.DrawBuffer = SVGABuffer.BackBuffer; + for (i=x;i<width;i++) + for (j=y;j<height;j++) + __svga_drawpixel15(i,j,SVGAMesa->clear_hicolor); + SVGABuffer.DrawBuffer = tmp; + } + } + return mask & (~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT)); } void __write_rgba_span15( const GLcontext *ctx, GLuint n, GLint x, GLint y, |