glasm: Implement gl_FrongFacing attribute

5 years ago · bf1ad74e8a
1 changed files with 3 additions and 0 deletions
--- a/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
@ -71,6 +71,9 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr,
    case IR::Attribute::VertexId:
        ctx.Add("MOV.S {}.x,{}.id;", inst, ctx.stage_name);
        break;
+    case IR::Attribute::FrontFace:
+        ctx.Add("CMP.S {}.x,{}.facing.x,0,-1;", inst, ctx.stage_name);
+        break;
    default:
        throw NotImplementedException("Get attribute {}", attr);
    }