anv: Use 16 bits for the isl_format in anv_format

This way the entire anv_format structure fits in 32 bits

diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index 926a71fd9b1b77c65de77683dde537bf7f50dc05..fccdbf7c191719aafed0d6cf9df1064f6dfd05ec 100644 (file)
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -1514,7 +1514,7 @@ struct anv_format_swizzle {
 };
 
 struct anv_format {
-   enum isl_format isl_format;
+   enum isl_format isl_format:16;
    struct anv_format_swizzle swizzle;
 };