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, 4 insertions, 2 deletions

diff --git a/src/mesa/state_tracker/st_texture.h b/src/mesa/state_tracker/st_texture.h
index 31f66ad52c..840b7e27cc 100644
--- a/src/mesa/state_tracker/st_texture.h
+++ b/src/mesa/state_tracker/st_texture.h
@@ -50,7 +50,7 @@ struct st_texture_image
     */
    struct pipe_texture *pt;
 
-   struct pipe_surface *surface;
+   struct pipe_transfer *transfer;
 };
 
 
@@ -132,7 +132,9 @@ extern GLubyte *
 st_texture_image_map(struct st_context *st,
                      struct st_texture_image *stImage,
 		     GLuint zoffset,
-                     GLuint flags);
+                     enum pipe_transfer_usage usage,
+                     unsigned x, unsigned y,
+                     unsigned w, unsigned h);
 
 extern void
 st_texture_image_unmap(struct st_context *st,