1 files changed, 15 insertions, 0 deletions
diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index 0cc6550a402..a0cb35ccccb 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -1552,6 +1552,21 @@ anv_get_isl_format(const struct gen_device_info *devinfo, VkFormat vk_format,
    return anv_get_format(devinfo, vk_format, aspect, tiling).isl_format;
 }
 
+static inline struct isl_swizzle
+anv_swizzle_for_render(struct isl_swizzle swizzle)
+{
+   /* Sometimes the swizzle will have alpha map to one.  We do this to fake
+    * RGB as RGBA for texturing
+    */
+   assert(swizzle.a == ISL_CHANNEL_SELECT_ONE ||
+          swizzle.a == ISL_CHANNEL_SELECT_ALPHA);
+
+   /* But it doesn't matter what we render to that channel */
+   swizzle.a = ISL_CHANNEL_SELECT_ALPHA;
+
+   return swizzle;
+}
+
 void
 anv_pipeline_setup_l3_config(struct anv_pipeline *pipeline, bool needs_slm);