i965: Track non-compressible sampling of renderbuffers

v3:
   - Actually set the flags when needed instead of falsely
     overwriting them (Jason).
   - Use more generic name for flag (dropped RENDERBUFFER)
   - Consult also shader images
v4:
   - Consult only lossless compressd shader images

v5:
   - Check the existence of renderbuffer before considering
     if it matches the given miptree

Signed-off-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 7780ce5..2c55b5e 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1333,6 +1333,16 @@ struct brw_context
 
    struct brw_fast_clear_state *fast_clear_state;
 
+   /* Array of flags telling if auxiliary buffer is disabled for corresponding
+    * renderbuffer. If draw_aux_buffer_disabled[i] is set then use of
+    * auxiliary buffer for gl_framebuffer::_ColorDrawBuffers[i] is
+    * disabled.
+    * This is needed in case the same underlying buffer is also configured
+    * to be sampled but with a format that the sampling engine can't treat
+    * compressed or fast cleared.
+    */
+   bool draw_aux_buffer_disabled[MAX_DRAW_BUFFERS];
+
    __DRIcontext *driContext;
    struct intel_screen *intelScreen;
 };