From f1cfb1e3676fc9e1fea6698ed5e8e79d2b094dae Mon Sep 17 00:00:00 2001
From: Brian <brian.paul@tungstengraphics.com>
Date: Tue, 18 Mar 2008 09:23:35 -0600
Subject: gallium: use new color packing utility functions

---
 src/mesa/state_tracker/st_cb_clear.c | 61 ++++--------------------------------
 1 file changed, 6 insertions(+), 55 deletions(-)

(limited to 'src/mesa/state_tracker/st_cb_clear.c')

diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c
index 5865071439..8223784d2e 100644
--- a/src/mesa/state_tracker/st_cb_clear.c
+++ b/src/mesa/state_tracker/st_cb_clear.c
@@ -48,6 +48,7 @@
 #include "pipe/p_state.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_winsys.h"
+#include "util/u_pack_color.h"
 
 #include "cso_cache/cso_context.h"
 
@@ -56,55 +57,6 @@
 #define TEST_DRAW_PASSTHROUGH 0
 
 
-static GLuint
-color_value(enum pipe_format pipeFormat, const GLfloat color[4])
-{
-   GLubyte r, g, b, a;
-
-   UNCLAMPED_FLOAT_TO_UBYTE(r, color[0]);
-   UNCLAMPED_FLOAT_TO_UBYTE(g, color[1]);
-   UNCLAMPED_FLOAT_TO_UBYTE(b, color[2]);
-   UNCLAMPED_FLOAT_TO_UBYTE(a, color[3]);
-
-   switch (pipeFormat) {
-   case PIPE_FORMAT_R8G8B8A8_UNORM:
-      return (r << 24) | (g << 16) | (b << 8) | a;
-   case PIPE_FORMAT_A8R8G8B8_UNORM:
-      return (a << 24) | (r << 16) | (g << 8) | b;
-   case PIPE_FORMAT_B8G8R8A8_UNORM:
-      return (b << 24) | (g << 16) | (r << 8) | a;
-   case PIPE_FORMAT_R5G6B5_UNORM:
-      return ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3);
-   default:
-      assert(0);
-      return 0;
-   }
-}
- 
-
-static uint
-depth_value(enum pipe_format pipeFormat, GLfloat value)
-{
-   switch (pipeFormat) {
-   case PIPE_FORMAT_Z16_UNORM:
-      return (uint) (value * 0xffff);
-   case PIPE_FORMAT_Z32_UNORM:
-      /* special-case to avoid overflow */
-      if (value == 1.0)
-         return 0xffffffff;
-      else
-         return (uint) (value * 0xffffffff);
-   case PIPE_FORMAT_S8Z24_UNORM:
-      return (uint) (value * 0xffffff);
-   case PIPE_FORMAT_Z24S8_UNORM:
-      return ((uint) (value * 0xffffff)) << 8;
-   default:
-      assert(0);
-      return 0;
-   }
-}
-
-
 static GLboolean
 is_depth_stencil_format(enum pipe_format pipeFormat)
 {
@@ -518,7 +470,6 @@ check_clear_stencil_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb)
 
 
 
-
 static void
 clear_color_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
 {
@@ -527,10 +478,10 @@ clear_color_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
       clear_with_quad(ctx, GL_TRUE, GL_FALSE, GL_FALSE);
    }
    else {
-      struct st_renderbuffer *strb = st_renderbuffer(rb);
-
       /* clear whole buffer w/out masking */
-      uint clearValue = color_value(strb->surface->format, ctx->Color.ClearColor);
+      struct st_renderbuffer *strb = st_renderbuffer(rb);
+      uint clearValue;
+      util_pack_color(ctx->Color.ClearColor, strb->surface->format, &clearValue);
       ctx->st->pipe->clear(ctx->st->pipe, strb->surface, clearValue);
    }
 }
@@ -547,7 +498,7 @@ clear_depth_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
       struct st_renderbuffer *strb = st_renderbuffer(rb);
 
       /* simple clear of whole buffer */
-      uint clearValue = depth_value(strb->surface->format, ctx->Depth.Clear);
+      uint clearValue = util_pack_z(strb->surface->format, ctx->Depth.Clear);
       ctx->st->pipe->clear(ctx->st->pipe, strb->surface, clearValue);
    }
 }
@@ -591,7 +542,7 @@ clear_depth_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
       struct st_renderbuffer *strb = st_renderbuffer(rb);
 
       /* clear whole buffer w/out masking */
-      GLuint clearValue = depth_value(strb->surface->format, ctx->Depth.Clear);
+      GLuint clearValue = util_pack_z(strb->surface->format, ctx->Depth.Clear);
 
       switch (strb->surface->format) {
       case PIPE_FORMAT_S8Z24_UNORM:
-- 
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