iris: Allocate buffer space for the fast clear color.

Also store clear color in the iris_resource.

Always allocate clear color state buffer.

v2:
 - Make clear_color_offset be 64 bits (Ken).
 - Simplify the logic to decide when to memset the aux buffer (Ken).

Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/gallium/drivers/iris/iris_resource.h b/src/gallium/drivers/iris/iris_resource.h
index d6bef37d898..3349d3eafc0 100644
--- a/src/gallium/drivers/iris/iris_resource.h
+++ b/src/gallium/drivers/iris/iris_resource.h
@@ -87,6 +87,18 @@ struct iris_resource {
       uint32_t offset;
 
       /**
+       * Fast clear color for this surface.  For depth surfaces, the clear
+       * value is stored as a float32 in the red component.
+       */
+      union isl_color_value clear_color;
+
+      /** Buffer object containing the indirect clear color.  */
+      struct iris_bo *clear_color_bo;
+
+      /** Offset into bo where the clear color can be found.  */
+      uint64_t clear_color_offset;
+
+      /**
        * \brief The type of auxiliary compression used by this resource.
        *
        * This describes the type of auxiliary compression that is intended to
@@ -207,6 +219,13 @@ struct pipe_resource *iris_resource_get_separate_stencil(struct pipe_resource *)
 void iris_get_depth_stencil_resources(struct pipe_resource *res,
                                       struct iris_resource **out_z,
                                       struct iris_resource **out_s);
+bool iris_resource_set_clear_color(struct iris_context *ice,
+                                   struct iris_resource *res,
+                                   union isl_color_value color);
+union isl_color_value
+iris_resource_get_clear_color(const struct iris_resource *res,
+                              struct iris_bo **clear_color_bo,
+                              uint64_t *clear_color_offset);
 
 void iris_init_screen_resource_functions(struct pipe_screen *pscreen);