From 47fdaf0ed9ef2f89cdaa97d0d48b1f1194d710c6 Mon Sep 17 00:00:00 2001
From: Brian <brian@i915.localnet.net>
Date: Thu, 2 Aug 2007 16:08:18 -0600
Subject: pipe->clear() now takes a surface, rather than color/depth/stencil
 flags.

pipe->clear() only used to clear whole buffers (no scissor) w/out masking.
Draw a colored quadrilateral in all other cases.
---
 src/mesa/pipe/softpipe/sp_clear.c | 109 +++-----------------------------------
 src/mesa/pipe/softpipe/sp_clear.h |   4 +-
 2 files changed, 9 insertions(+), 104 deletions(-)

(limited to 'src/mesa/pipe/softpipe')

diff --git a/src/mesa/pipe/softpipe/sp_clear.c b/src/mesa/pipe/softpipe/sp_clear.c
index e9b142e780..d7684d2044 100644
--- a/src/mesa/pipe/softpipe/sp_clear.c
+++ b/src/mesa/pipe/softpipe/sp_clear.c
@@ -38,32 +38,13 @@
 #include "colormac.h"
 
 
-static GLuint
-color_value(GLuint format, 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 (format) {
-   case PIPE_FORMAT_U_R8_G8_B8_A8:
-      return (r << 24) | (g << 16) | (b << 8) | a;
-   case PIPE_FORMAT_U_A8_R8_G8_B8:
-      return (a << 24) | (r << 16) | (g << 8) | b;
-   case PIPE_FORMAT_U_R5_G6_B5:
-      return ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3);
-   default:
-      return 0;
-   }
-}
- 
-
+/**
+ * Clear the given surface to the specified value.
+ * No masking, no scissor (clear entire buffer).
+ */
 void
-softpipe_clear(struct pipe_context *pipe, GLboolean color, GLboolean depth,
-               GLboolean stencil)
+softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
+               GLuint clearValue)
 {
    struct softpipe_context *softpipe = softpipe_context(pipe);
    GLint x, y, w, h;
@@ -75,81 +56,5 @@ softpipe_clear(struct pipe_context *pipe, GLboolean color, GLboolean depth,
    w = softpipe->framebuffer.cbufs[0]->width;
    h = softpipe->framebuffer.cbufs[0]->height;
 
-   if (color) {
-      GLuint i;
-      for (i = 0; i < softpipe->framebuffer.num_cbufs; i++) {
-         struct pipe_surface *ps = softpipe->framebuffer.cbufs[i];
-         GLuint clearVal = color_value(ps->format,
-                                       softpipe->clear_color.color);
-         pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearVal, ~0);
-      }
-   }
-
-   if (depth && stencil &&
-       softpipe->framebuffer.zbuf == softpipe->framebuffer.sbuf) {
-      /* clear Z and stencil together */
-      struct pipe_surface *ps = softpipe->framebuffer.zbuf;
-      if (ps->format == PIPE_FORMAT_S8_Z24) {
-         GLuint mask = (softpipe->stencil.write_mask[0] << 8) | 0xffffff;	 
-         GLuint clearVal = (GLuint) (softpipe->depth_test.clear * 0xffffff);
-
-	 assert (mask == ~0);
-
-         clearVal |= (softpipe->stencil.clear_value << 24);
-         pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearVal, ~0);
-      }
-      else {
-         /* XXX Z24_S8 format? */
-         assert(0);
-      }
-   }
-   else {
-      /* separate Z and stencil */
-      if (depth) {
-         struct pipe_surface *ps = softpipe->framebuffer.zbuf;
-         GLuint clearVal;
-
-         switch (ps->format) {
-         case PIPE_FORMAT_U_Z16:
-            clearVal = (GLuint) (softpipe->depth_test.clear * 65535.0);
-            break;
-         case PIPE_FORMAT_U_Z32:
-            clearVal = (GLuint) (softpipe->depth_test.clear * 0xffffffff);
-            break;
-         case PIPE_FORMAT_S8_Z24:
-            clearVal = (GLuint) (softpipe->depth_test.clear * 0xffffff);
-            break;
-         default:
-            assert(0);
-         }
-
-         pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearVal, ~0);
-      }
-
-      if (stencil) {
-         struct pipe_surface *ps = softpipe->framebuffer.sbuf;
-         GLuint clearVal = softpipe->stencil.clear_value;
-
-	 /* If this is not ~0, we shouldn't get here - clear should be
-	  * done with geometry instead.
-	  */
-         GLuint mask = softpipe->stencil.write_mask[0];
-
-	 assert((mask & 0xff) == 0xff);
-
-         switch (ps->format) {
-         case PIPE_FORMAT_S8_Z24:
-            clearVal = clearVal << 24;
-            mask = mask << 24;
-            break;
-         case PIPE_FORMAT_U_S8:
-            /* nothing */
-            break;
-         default:
-            assert(0);
-         }
-
-         pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearVal, mask);
-      }
-   }
+   pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearValue, ~0);
 }
diff --git a/src/mesa/pipe/softpipe/sp_clear.h b/src/mesa/pipe/softpipe/sp_clear.h
index d41cc1d070..e706e731c2 100644
--- a/src/mesa/pipe/softpipe/sp_clear.h
+++ b/src/mesa/pipe/softpipe/sp_clear.h
@@ -36,8 +36,8 @@
 struct pipe_context;
 
 extern void
-softpipe_clear(struct pipe_context *pipe, GLboolean color, GLboolean depth,
-               GLboolean stencil);
+softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
+               GLuint clearValue);
 
 
 #endif /* SP_CLEAR_H */
-- 
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