-/* $Id: svgamesa24.c,v 1.3 2000/01/23 17:49:54 brianp Exp $ */
+/* $Id: svgamesa24.c,v 1.7 2000/06/14 21:59:07 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
* Additional authors: Slawomir Szczyrba <steev@hot.pl> (Mesa 3.2)
*/
+#ifdef HAVE_CONFIG_H
+#include "conf.h"
+#endif
+
#ifdef SVGA
#include "svgapix.h"
+#include "svgamesa24.h"
-_RGB * rgbBuffer;
#if 0
-inline int RGB2BGR24(int c)
+/* this doesn't compile with GCC on RedHat 6.1 */
+static inline int RGB2BGR24(int c)
{
asm("rorw $8, %0\n"
"rorl $16, %0\n"
return c;
}
#else
-int RGB2BGR24(int c)
+static unsigned long RGB2BGR24(unsigned long color)
{
- /* XXX this isn't right */
- return c;
+ return (color & 0xff00)|(color>>16)|((color & 0xff)<<16);
}
-
-
#endif
-int __svga_drawpixel24(int x, int y, GLubyte r, GLubyte g, GLubyte b)
+static void __svga_drawpixel24(int x, int y, GLubyte r, GLubyte g, GLubyte b)
{
unsigned long offset;
- rgbBuffer=(void *)SVGABuffer.BackBuffer;
+ _RGB *rgbBuffer=(void *)SVGABuffer.DrawBuffer;
y = SVGAInfo->height-y-1;
offset = y * SVGAInfo->width + x;
rgbBuffer[offset].r=r;
rgbBuffer[offset].g=g;
rgbBuffer[offset].b=b;
-
- return 0;
}
-unsigned long __svga_getpixel24(int x, int y)
+static unsigned long __svga_getpixel24(int x, int y)
{
unsigned long offset;
- rgbBuffer=(void *)SVGABuffer.BackBuffer;
+ _RGB *rgbBuffer=(void *)SVGABuffer.ReadBuffer;
y = SVGAInfo->height-y-1;
offset = y * SVGAInfo->width + x;
return rgbBuffer[offset].r<<16 | rgbBuffer[offset].g<<8 | rgbBuffer[offset].b;
{
int i,j;
- if (mask & GL_COLOR_BUFFER_BIT) {
- if (all) {
- rgbBuffer=(void *)SVGABuffer.BackBuffer;
- for (i=0;i<SVGABuffer.BufferSize / 3;i++)
- {
- rgbBuffer[i].r=SVGAMesa->clear_red;
- rgbBuffer[i].g=SVGAMesa->clear_green;
- rgbBuffer[i].b=SVGAMesa->clear_blue;
- }
- } else {
- for (i=x;i<width;i++)
- for (j=y;j<height;j++)
- __svga_drawpixel24( i, j, SVGAMesa->clear_red,
- SVGAMesa->clear_green,
- SVGAMesa->clear_blue);
- }
+ if (mask & DD_FRONT_LEFT_BIT) {
+ if (all) {
+ _RGB *rgbBuffer=(void *)SVGABuffer.FrontBuffer;
+ for (i=0;i<SVGABuffer.BufferSize / 3;i++) {
+ rgbBuffer[i].r=SVGAMesa->clear_red;
+ rgbBuffer[i].g=SVGAMesa->clear_green;
+ rgbBuffer[i].b=SVGAMesa->clear_blue;
+ }
+ }
+ else {
+ GLubyte *tmp = SVGABuffer.DrawBuffer;
+ SVGABuffer.DrawBuffer = SVGABuffer.FrontBuffer;
+ for (i=x;i<width;i++)
+ for (j=y;j<height;j++)
+ __svga_drawpixel24( i, j, SVGAMesa->clear_red,
+ SVGAMesa->clear_green,
+ SVGAMesa->clear_blue);
+ SVGABuffer.DrawBuffer = tmp;
+ }
+ }
+ if (mask & DD_BACK_LEFT_BIT) {
+ if (all) {
+ _RGB *rgbBuffer=(void *)SVGABuffer.BackBuffer;
+ for (i=0;i<SVGABuffer.BufferSize / 3;i++) {
+ rgbBuffer[i].r=SVGAMesa->clear_red;
+ rgbBuffer[i].g=SVGAMesa->clear_green;
+ rgbBuffer[i].b=SVGAMesa->clear_blue;
+ }
+ }
+ else {
+ GLubyte *tmp = SVGABuffer.DrawBuffer;
+ SVGABuffer.DrawBuffer = SVGABuffer.BackBuffer;
+ for (i=x;i<width;i++)
+ for (j=y;j<height;j++)
+ __svga_drawpixel24( i, j, SVGAMesa->clear_red,
+ SVGAMesa->clear_green,
+ SVGAMesa->clear_blue);
+ SVGABuffer.DrawBuffer = tmp;
+ }
}
- return mask & (~GL_COLOR_BUFFER_BIT);
+ return mask & (~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
}
void __write_rgba_span24( const GLcontext *ctx, GLuint n, GLint x, GLint y,
}
}
+#else
+
+
+/* silence compiler warning */
+extern void _mesa_svga24_dummy_function(void);
+void _mesa_svga24_dummy_function(void)
+{
+}
+
+
#endif