Mesa (master): r300g: add buffer/texture referenced checks.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 03f1896304da481bd054779a025a4509f7ea59af
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=03f1896304da481bd054779a025a4509f7ea59af

Author: Dave Airlie <airlied at redhat.com>
Date:   Sun Mar 21 06:32:48 2010 +1000

r300g: add buffer/texture referenced checks.

I've no idea about the comments that were in there, just pass
this down to the winsys.

Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/gallium/drivers/r300/r300_context.c |   22 ++++++++--------------
 1 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c
index 210e31e..a55d2db 100644
--- a/src/gallium/drivers/r300/r300_context.c
+++ b/src/gallium/drivers/r300/r300_context.c
@@ -72,29 +72,23 @@ static void r300_destroy_context(struct pipe_context* context)
 }
 
 static unsigned int
-r300_is_texture_referenced(struct pipe_context *pipe,
+r300_is_texture_referenced(struct pipe_context *context,
                            struct pipe_texture *texture,
                            unsigned face, unsigned level)
 {
-    return 0;
+    struct r300_context* r300 = r300_context(context);
+    struct r300_texture* tex = (struct r300_texture*)texture;
+
+    return r300->rws->is_buffer_referenced(r300->rws, tex->buffer);
 }
 
 static unsigned int
-r300_is_buffer_referenced(struct pipe_context *pipe,
+r300_is_buffer_referenced(struct pipe_context *context,
                           struct pipe_buffer *buf)
 {
-    /* This only checks to see whether actual hardware buffers are
-     * referenced. Since we use managed BOs and transfers, it's actually not
-     * possible for pipe_buffers to ever reference the actual hardware, so
-     * buffers are never referenced. 
-     */
-
-    /* XXX: that doesn't make sense given that
-     * r300_is_texture_referenced is implemented on top of this
-     * function and hardware can certainly refer to textures
-     * directly...
-     */
-    return 0;
+    struct r300_context* r300 = r300_context(context);
+
+    return r300_buffer_is_referenced(r300, buf);
 }
 
 static void r300_flush_cb(void *data)