swrast* (gallium, classic): add MESA_copy_sub_buffer support (v3)

This patches add MESA_copy_sub_buffer support to the dri sw loader and
then to gallium state tracker, llvmpipe, softpipe and other bits.

It reuses the dri1 driver extension interface, and it updates the swrast
loader interface for a new putimage which can take a stride.

I've tested this with gnome-shell with a cogl hacked to reenable sub copies
for llvmpipe and the one piglit test.

I could probably split this patch up as well.

v2: pass a pipe_box, to reduce the entrypoints, as per Jose's review,
add to p_screen doc comments.

v3: finish off winsys interfaces, add swrast classic support as well.

Reviewed-by: Jose Fonseca <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

swrast: add support for copy_sub_buffer

1 files changed, 3 insertions, 2 deletions

diff --git a/src/gallium/drivers/trace/tr_screen.c b/src/gallium/drivers/trace/tr_screen.c
index c6745af09f2..debd031084f 100644
--- a/src/gallium/drivers/trace/tr_screen.c
+++ b/src/gallium/drivers/trace/tr_screen.c
@@ -209,7 +209,8 @@ static void
 trace_screen_flush_frontbuffer(struct pipe_screen *_screen,
                                struct pipe_resource *_resource,
                                unsigned level, unsigned layer,
-                               void *context_private)
+                               void *context_private,
+                               struct pipe_box *sub_box)
 {
    struct trace_screen *tr_scr = trace_screen(_screen);
    struct trace_resource *tr_res = trace_resource(_resource);
@@ -226,7 +227,7 @@ trace_screen_flush_frontbuffer(struct pipe_screen *_screen,
    trace_dump_arg(ptr, context_private);
    */
 
-   screen->flush_frontbuffer(screen, resource, level, layer, context_private);
+   screen->flush_frontbuffer(screen, resource, level, layer, context_private, sub_box);
 
    trace_dump_call_end();
 }