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authorBrian Paul <[email protected]>2000-01-25 00:03:01 +0000
committerBrian Paul <[email protected]>2000-01-25 00:03:01 +0000
commitebd5feab9af92ff08c2b9280e6dfa1a44a7d1c22 (patch)
treea81939c5c81d4dd5c97ba77cc14d209f3f088911 /src/mesa/drivers/svga/svgamesa16.c
parent2454429915c05c69a86804817c95cc5b634699af (diff)
updated for Mesa 3.3
Diffstat (limited to 'src/mesa/drivers/svga/svgamesa16.c')
-rw-r--r--src/mesa/drivers/svga/svgamesa16.c60
1 files changed, 39 insertions, 21 deletions
diff --git a/src/mesa/drivers/svga/svgamesa16.c b/src/mesa/drivers/svga/svgamesa16.c
index 061f40a9b70..26a36c7d03a 100644
--- a/src/mesa/drivers/svga/svgamesa16.c
+++ b/src/mesa/drivers/svga/svgamesa16.c
@@ -1,8 +1,8 @@
-/* $Id: svgamesa16.c,v 1.3 2000/01/23 17:49:54 brianp Exp $ */
+/* $Id: svgamesa16.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
@@ -30,25 +30,23 @@
#ifdef SVGA
#include "svgapix.h"
+#include "svgamesa16.h"
-GLshort * shortBuffer;
-int __svga_drawpixel16(int x, int y, unsigned long c)
+static void __svga_drawpixel16(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_getpixel16(int x, int y)
+static unsigned long __svga_getpixel16(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];
@@ -74,18 +72,38 @@ GLbitfield __clear16( GLcontext *ctx, GLbitfield mask, GLboolean all,
GLint x, GLint y, GLint width, GLint height )
{
int i,j;
-
- if (mask & GL_COLOR_BUFFER_BIT) {
- if (all) {
- shortBuffer=(void *)SVGABuffer.BackBuffer;
- 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_drawpixel16(i,j,SVGAMesa->clear_hicolor);
- }
- }
- return mask & (~GL_COLOR_BUFFER_BIT);
+
+ if (mask & DD_FRONT_LEFT_BIT) {
+ if (all) {
+ GLshort *shortBuffer=(void *)SVGABuffer.FrontBuffer;
+ 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_drawpixel16(i,j,SVGAMesa->clear_hicolor);
+ SVGABuffer.DrawBuffer = tmp;
+ }
+ }
+ if (mask & DD_BACK_LEFT_BIT) {
+ if (all) {
+ GLshort *shortBuffer=(void *)SVGABuffer.BackBuffer;
+ 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_drawpixel16(i,j,SVGAMesa->clear_hicolor);
+ SVGABuffer.DrawBuffer = tmp;
+ }
+ }
+ return mask & (~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
}
void __write_rgba_span16( const GLcontext *ctx, GLuint n, GLint x, GLint y,