r300: add occlusion queries support

[mesa.git] / src / mesa / drivers / svga / svgamesa24.c

diff --git a/src/mesa/drivers/svga/svgamesa24.c b/src/mesa/drivers/svga/svgamesa24.c
index aa174df4cc46cfdf3f83c3e2ff7c8845163203fd..f2ec9c0364a2b4a90e58ca7c5830218cd6886ec9 100644 (file)
--- a/src/mesa/drivers/svga/svgamesa24.c
+++ b/src/mesa/drivers/svga/svgamesa24.c
@@ -1,9 +1,8 @@
-/* $Id: svgamesa24.c,v 1.8 2000/11/14 17:40:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.3
- * 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
@@ -35,11 +34,12 @@
 
 #include "svgapix.h"
 #include "svgamesa24.h"
+#include "swrast/swrast.h"
 
 
 #if 0
 /* this doesn't compile with GCC on RedHat 6.1 */
-static inline int RGB2BGR24(int c)
+static INLINE int RGB2BGR24(int c)
 {
        asm("rorw  $8, %0\n"     
            "rorl $16, %0\n"     
@@ -78,20 +78,26 @@ static unsigned long __svga_getpixel24(int x, int y)
     return rgbBuffer[offset].r<<16 | rgbBuffer[offset].g<<8 | rgbBuffer[offset].b;
 }
 
-void __clear_color24( GLcontext *ctx,
-                      GLubyte red, GLubyte green,
-                      GLubyte blue, GLubyte alpha )
+void __clear_color24( GLcontext *ctx, const GLfloat color[4] )
 {
-   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 )
 {
    int i,j;
+   int x = ctx->DrawBuffer->_Xmin;
+   int y = ctx->DrawBuffer->_Ymin;
+   int width = ctx->DrawBuffer->_Xmax - x;
+   int height = ctx->DrawBuffer->_Ymax - y;
+   GLboolean all = (width == ctx->DrawBuffer->Width && height == ctx->DrawBuffer->height)
    
    if (mask & DD_FRONT_LEFT_BIT) {
       if (all) {
@@ -112,6 +118,7 @@ GLbitfield __clear24( GLcontext *ctx, GLbitfield mask, GLboolean all,
                                    SVGAMesa->clear_blue);
          SVGABuffer.DrawBuffer = tmp;
       }        
+      mask &= ~DD_FRONT_LEFT_BIT;
    }
    if (mask & DD_BACK_LEFT_BIT) {
       if (all) {
@@ -132,8 +139,11 @@ GLbitfield __clear24( GLcontext *ctx, GLbitfield mask, GLboolean all,
                                    SVGAMesa->clear_blue);
          SVGABuffer.DrawBuffer = tmp;
       }        
+      mask &= ~DD_BACK_LEFT_BIT;
    }
-   return mask & (~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
+
+   if (mask)
+      _swrast_Clear( ctx, mask );
 }
 
 void __write_rgba_span24( const GLcontext *ctx, GLuint n, GLint x, GLint y,