Merged pull request "Mark SBO in stretch_pic VP as readonly, to silen…

…ce validation error": #432

src/refresh/vkpt/shader/stretch_pic.vert

@@ -43,7 +43,7 @@ struct StretchPic {
 	uint color, tex_handle;
 };
 
-layout(set = 0, binding = 0) buffer SBO {
+layout(set = 0, binding = 0) readonly buffer SBO {
 	StretchPic stretch_pics[];
 };