+ /* Whether the texture is a displayable back buffer and needs DCC
+ * decompression, which is expensive. Therefore, it's enabled only
+ * if statistics suggest that it will pay off and it's allocated
+ * separately. It can't be bound as a sampler by apps. Limited to
+ * target == 2D and last_level == 0. If enabled, dcc_offset contains
+ * the absolute GPUVM address, not the relative one.
+ */
+ struct r600_resource *dcc_separate_buffer;
+ /* When DCC is temporarily disabled, the separate buffer is here. */
+ struct r600_resource *last_dcc_separate_buffer;
+ /* We need to track DCC dirtiness, because st/dri usually calls
+ * flush_resource twice per frame (not a bug) and we don't wanna
+ * decompress DCC twice. Also, the dirty tracking must be done even
+ * if DCC isn't used, because it's required by the DCC usage analysis
+ * for a possible future enablement.
+ */
+ bool separate_dcc_dirty;
+ /* Statistics gathering for the DCC enablement heuristic. */
+ bool dcc_gather_statistics;
+ /* Estimate of how much this color buffer is written to in units of
+ * full-screen draws: ps_invocations / (width * height)
+ * Shader kills, late Z, and blending with trivial discards make it
+ * inaccurate (we need to count CB updates, not PS invocations).
+ */
+ unsigned ps_draw_ratio;
+ /* The number of clears since the last DCC usage analysis. */
+ unsigned num_slow_clears;
+