cogl-buffer: Track the last used bind target in CoglBuffer

This makes CoglBuffer track the last used bind target as a private
property. This is later used when binding a buffer to map instead of
always using the PIXEL_UNPACK target.

This also adds some additional sanity checks that code doesn't try to
nest binds to the same target or bind a buffer to multiple targets at
the same time.

1 files changed, 1 insertions, 3 deletions

diff --git a/cogl/cogl-context.h b/cogl/cogl-context.h
index e0ad904f..645bb415 100644
--- a/cogl/cogl-context.h
+++ b/cogl/cogl-context.h
@@ -118,9 +118,7 @@ typedef struct
 
   gboolean              legacy_depth_test_enabled;
 
-  /* PBOs */
-  /* This can be used to check if a pbo is bound */
-  CoglBuffer       *current_pbo;
+  CoglBuffer       *current_buffer[COGL_BUFFER_BIND_TARGET_COUNT];
 
   /* Framebuffers */
   GSList           *framebuffer_stack;