gallium: No longer allow CPU mapping surfaces directly.

Instead, a new pipe_transfer object has to be created and mapped for
transferring data between the CPU and a texture. This gives the driver more
flexibility for textures in address spaces that aren't CPU accessible.

This is a first pass; softpipe/xlib builds and runs glxgears, but it only shows
a black window. Looks like something's off related to the Z buffer, so the
depth test always fails.

1 files changed, 14 insertions, 1 deletions

diff --git a/src/gallium/drivers/softpipe/sp_texture.h b/src/gallium/drivers/softpipe/sp_texture.h
index c1636920cd6..893aa7d11d8 100644
--- a/src/gallium/drivers/softpipe/sp_texture.h
+++ b/src/gallium/drivers/softpipe/sp_texture.h
@@ -51,14 +51,27 @@ struct softpipe_texture
    boolean modified;
 };
 
+struct softpipe_transfer
+{
+   struct pipe_transfer base;
+
+   unsigned long offset;
+};
+
 
-/** cast wrapper */
+/** cast wrappers */
 static INLINE struct softpipe_texture *
 softpipe_texture(struct pipe_texture *pt)
 {
    return (struct softpipe_texture *) pt;
 }
 
+static INLINE struct softpipe_transfer *
+softpipe_transfer(struct pipe_transfer *pt)
+{
+   return (struct softpipe_transfer *) pt;
+}
+
 
 extern void
 softpipe_init_texture_funcs( struct softpipe_context *softpipe );