-/* $Id: svgamesa24.c,v 1.2 2000/01/22 20:08:36 brianp Exp $ */
+/* $Id: svgamesa24.c,v 1.12 2002/11/11 18:42:41 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.2
- * Copyright (C) 1995-2000 Brian Paul
+ * Version: 5.0
+ * Copyright (C) 1995-2002 Brian Paul
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* 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"
+#include "swrast/swrast.h"
-_RGB * rgbBuffer;
-inline int RGB2BGR24(int c)
+#if 0
+/* 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"
: "=q"(c):"0"(c));
return c;
}
+#else
+static unsigned long RGB2BGR24(unsigned long color)
+{
+ 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;
}
-void __set_color24( GLcontext *ctx,
- GLubyte red, GLubyte green,
- GLubyte blue, GLubyte alpha )
+void __clear_color24( GLcontext *ctx, const GLfloat color[4] )
{
- SVGAMesa->red = red;
- SVGAMesa->green = green;
- SVGAMesa->blue = blue;
-/* SVGAMesa->truecolor = red<<16 | green<<8 | blue; */
-}
-
-void __clear_color24( GLcontext *ctx,
- GLubyte red, GLubyte green,
- GLubyte blue, GLubyte alpha )
-{
- SVGAMesa->clear_red = red;
- SVGAMesa->clear_green = green;
- SVGAMesa->clear_blue = blue;
+ GLubyte col[3];
+ CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]);
+ CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]);
+ CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]);
+ SVGAMesa->clear_red = col[0];
+ SVGAMesa->clear_green = col[1];
+ SVGAMesa->clear_blue = col[2];
/* SVGAMesa->clear_truecolor = red<<16 | green<<8 | blue; */
}
-GLbitfield __clear24( GLcontext *ctx, GLbitfield mask, GLboolean all,
- GLint x, GLint y, GLint width, GLint height )
+void __clear24( 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) {
- 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;
+ }
+ mask &= ~DD_FRONT_LEFT_BIT;
}
- return mask & (~GL_COLOR_BUFFER_BIT);
+ 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;
+ }
+ mask &= ~DD_BACK_LEFT_BIT;
+ }
+
+ if (mask)
+ _swrast_Clear( ctx, mask, all, x, y, width, height );
}
void __write_rgba_span24( const GLcontext *ctx, GLuint n, GLint x, GLint y,
void __write_mono_rgba_span24( const GLcontext *ctx,
GLuint n, GLint x, GLint y,
- const GLubyte mask[])
+ const GLchan color[4], const GLubyte mask[])
{
int i;
for (i=0; i<n; i++, x++) {
if (mask[i]) {
- __svga_drawpixel24( x, y, SVGAMesa->red,
- SVGAMesa->green,
- SVGAMesa->blue);
+ __svga_drawpixel24( x, y, color[RCOMP], color[GCOMP], color[BCOMP]);
}
}
}
void __write_mono_rgba_pixels24( const GLcontext *ctx,
GLuint n,
const GLint x[], const GLint y[],
- const GLubyte mask[] )
+ const GLchan color[4], const GLubyte mask[] )
{
int i;
- /* use current rgb color */
for (i=0; i<n; i++) {
if (mask[i]) {
- __svga_drawpixel24( x[i], y[i], SVGAMesa->red,
- SVGAMesa->green,
- SVGAMesa->blue);
+ __svga_drawpixel24( x[i], y[i],
+ color[RCOMP], color[GCOMP], color[BCOMP] );
}
}
}
*((GLint*)rgba[i]) = RGB2BGR24(__svga_getpixel24( x[i], y[i]));
}
}
+
+#else
+
+
+/* silence compiler warning */
+extern void _mesa_svga24_dummy_function(void);
+void _mesa_svga24_dummy_function(void)
+{
+}
+
+
+#endif
projects / mesa.git / blobdiff