add a number of PBO validate/map/unmap functions

Helper functions for (some) drivers, including swrast.
cherry-picked from Mesa/master

1 files changed, 37 insertions, 2 deletions

diff --git a/src/mesa/main/bufferobj.h b/src/mesa/main/bufferobj.h
index f54f9e9ff00..efb3b4711e1 100644
--- a/src/mesa/main/bufferobj.h
+++ b/src/mesa/main/bufferobj.h
@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.3
+ * Version:  7.1
  *
- * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   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"),
@@ -86,6 +86,41 @@ _mesa_validate_pbo_access(GLuint dimensions,
                           GLsizei width, GLsizei height, GLsizei depth,
                           GLenum format, GLenum type, const GLvoid *ptr);
 
+extern const GLubyte *
+_mesa_validate_and_map_bitmap_pbo(GLcontext *ctx,
+                                  GLsizei width, GLsizei height,
+                                  const struct gl_pixelstore_attrib *unpack,
+                                  const GLubyte *bitmap);
+
+extern void
+_mesa_unmap_bitmap_pbo(GLcontext *ctx,
+                       const struct gl_pixelstore_attrib *unpack);
+
+extern const GLvoid *
+_mesa_validate_and_map_drawpix_pbo(GLcontext *ctx,
+                                   GLsizei width, GLsizei height,
+                                   GLenum format, GLenum type,
+                                   const struct gl_pixelstore_attrib *unpack,
+                                   const GLvoid *pixels);
+
+extern void
+_mesa_unmap_drapix_pbo(GLcontext *ctx,
+                       const struct gl_pixelstore_attrib *unpack);
+
+
+extern void *
+_mesa_validate_and_map_readpix_pbo(GLcontext *ctx,
+                                   GLint x, GLint y,
+                                   GLsizei width, GLsizei height,
+                                   GLenum format, GLenum type,
+                                   const struct gl_pixelstore_attrib *pack,
+                                   GLvoid *dest);
+
+extern void
+_mesa_unmap_readpix_pbo(GLcontext *ctx,
+                        const struct gl_pixelstore_attrib *pack);
+
+
 extern void
 _mesa_unbind_buffer_object( GLcontext *ctx, struct gl_buffer_object *bufObj );