Reroute some clear functionality.

Still require the intelClear() call to flush batchbuffers.  That will be
removed later...

1 files changed, 89 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c
new file mode 100644
index 0000000000..d9cb83b8ad
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_clear.c
@@ -0,0 +1,89 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Brian Paul
+  */
+
+#include "st_context.h"
+#include "glheader.h"
+#include "macros.h"
+#include "enums.h"
+#include "st_context.h"
+#include "st_atom.h"
+#include "pipe/p_context.h"
+
+
+
+/* XXX: doesn't pick up the differences between front/back/left/right
+ * clears.  Need to sort that out...
+ */
+static void st_clear(GLcontext *ctx, GLbitfield mask)
+{
+   struct st_context *st = ctx->st;
+   GLboolean color = (mask & BUFFER_BITS_COLOR) ? GL_TRUE : GL_FALSE;
+   GLboolean depth = (mask & BUFFER_BIT_DEPTH) ? GL_TRUE : GL_FALSE;
+   GLboolean stencil = (mask & BUFFER_BIT_STENCIL) ? GL_TRUE : GL_FALSE;
+   GLboolean accum = (mask & BUFFER_BIT_ACCUM) ? GL_TRUE : GL_FALSE;
+   GLboolean fullscreen = 1;	/* :-) */
+
+   /* This makes sure the softpipe has the latest scissor, etc values */
+   st_validate_state( st );
+
+   if (fullscreen) {
+      /* pipe->clear() should clear a particular surface, so that we
+       * can iterate over render buffers at this level and clear the
+       * ones GL is asking for.  
+       *
+       * Will probably need something like pipe->clear_z_stencil() to
+       * cope with the special case of paired and unpaired z/stencil
+       * buffers, though could perhaps deal with them explicitly at
+       * this level.
+       */
+      st->pipe->clear(st->pipe, color, depth, stencil, accum);
+   }
+   else {
+      /* Convert to geometry, etc:
+       */
+   }
+}
+
+
+void st_init_cb_clear( struct st_context *st )
+{
+   struct dd_function_table *functions = &st->ctx->Driver;
+
+   functions->Clear = st_clear;
+}
+
+
+void st_destroy_cb_clear( struct st_context *st )
+{
+}
+