gallium: initial implemenation of auto mipmap generation in state tracker

Use hardware rendering to compute/render mipmap levels.
The fallback path (which will be used for non-renderable texture formats)
isn't working yet.

1 files changed, 46 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_gen_mipmap.h b/src/mesa/state_tracker/st_gen_mipmap.h
new file mode 100644
index 0000000000..7668c1e44e
--- /dev/null
+++ b/src/mesa/state_tracker/st_gen_mipmap.h
@@ -0,0 +1,46 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 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.
+ * 
+ **************************************************************************/
+
+
+#ifndef ST_GEN_MIPMAP_H
+#define ST_GEN_MIPMAP_H
+
+
+extern void
+st_init_generate_mipmap(struct st_context *st);
+
+
+extern void
+st_destroy_generate_mipmpap(struct st_context *st);
+
+
+extern void
+st_generate_mipmap(GLcontext *ctx, GLenum target,
+                   struct gl_texture_object *texObj);
+
+
+#endif /* ST_GEN_MIPMAP_H */