gallium/draw: initial code to properly support llvm in the draw module

[mesa.git] / src / mesa / drivers / svga / svgamesa16.c

diff --git a/src/mesa/drivers/svga/svgamesa16.c b/src/mesa/drivers/svga/svgamesa16.c
index 20d1ed6fecb8c98e11923d084773b36d071cdb5e..9fc8c786e8d9da408872d1cee98687d6ffd383fb 100644 (file)
--- a/src/mesa/drivers/svga/svgamesa16.c
+++ b/src/mesa/drivers/svga/svgamesa16.c
@@ -1,9 +1,8 @@
-/* $Id: svgamesa16.c,v 1.8 2001/01/24 00:04:59 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
@@ -35,6 +34,7 @@
 
 #include "svgapix.h"
 #include "svgamesa16.h"
+#include "swrast/swrast.h"
 
 
 static void __svga_drawpixel16(int x, int y, unsigned long c)
@@ -56,18 +56,26 @@ static unsigned long __svga_getpixel16(int x, int y)
     return shortBuffer[offset];
 }
 
-void __clear_color16( GLcontext *ctx, const GLchan color[4] )
+void __clear_color16( GLcontext *ctx, const GLfloat color[4] )
 {
-    SVGAMesa->clear_hicolor = (color[0] >> 3) << 11 |
-                              (color[1] >> 2) << 5 |
-                              (color[2] >> 3); 
+   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_hicolor = (col[0] >> 3) << 11 |
+                              (col[1] >> 2) << 5 |
+                              (col[2] >> 3); 
 /*    SVGAMesa->clear_hicolor=(red)<<11 | (green)<<5 | (blue); */
 }   
 
-GLbitfield __clear16( GLcontext *ctx, GLbitfield mask, GLboolean all,
-                      GLint x, GLint y, GLint width, GLint height )
+void __clear16( 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) {
@@ -83,7 +91,8 @@ GLbitfield __clear16( GLcontext *ctx, GLbitfield mask, GLboolean all,
                __svga_drawpixel16(i,j,SVGAMesa->clear_hicolor);
          SVGABuffer.DrawBuffer = tmp;
       }
-   }    
+      mask &= ~DD_FRONT_LEFT_BIT;
+   }
    if (mask & DD_BACK_LEFT_BIT) {
       if (all) {
          GLshort *shortBuffer=(void *)SVGABuffer.BackBuffer;
@@ -98,8 +107,11 @@ GLbitfield __clear16( GLcontext *ctx, GLbitfield mask, GLboolean all,
                __svga_drawpixel16(i,j,SVGAMesa->clear_hicolor);
          SVGABuffer.DrawBuffer = tmp;
       }
-   }    
-   return mask & (~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
+      mask &= ~DD_BACK_LEFT_BIT;
+   }
+
+   if (mask)
+      _swrast_Clear( ctx, mask );
 }
 
 void __write_rgba_span16( const GLcontext *ctx, GLuint n, GLint x, GLint y,