MSL: Handle CullDistance better.

1 files changed, 26 insertions, 0 deletions

diff --git a/reference/opt/shaders-msl/frag/cull-distance-varying.frag b/reference/opt/shaders-msl/frag/cull-distance-varying.frag
new file mode 100644
index 00000000..ddde8e1d
--- /dev/null
+++ b/reference/opt/shaders-msl/frag/cull-distance-varying.frag
@@ -0,0 +1,26 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct main0_out
+{
+    float4 FragColor [[color(0)]];
+};
+
+struct main0_in
+{
+    float gl_CullDistance_0 [[user(cull0)]];
+    float gl_CullDistance_1 [[user(cull1)]];
+};
+
+fragment main0_out main0(main0_in in [[stage_in]])
+{
+    main0_out out = {};
+    float gl_CullDistance[2] = {};
+    gl_CullDistance[0] = in.gl_CullDistance_0;
+    gl_CullDistance[1] = in.gl_CullDistance_1;
+    out.FragColor = float4((1.0 - gl_CullDistance[0]) - gl_CullDistance[1]);
+    return out;
+}
+