HelperShaders class

src/Ryujinx.Graphics.Metal/HelperShadersSource.metal

@@ -0,0 +1,36 @@
+#include <metal_stdlib>
+
+using namespace metal;
+
+constant float2 quadVertices[] = {
+    float2(-1, -1),
+    float2(-1,  1),
+    float2( 1,  1),
+    float2(-1, -1),
+    float2( 1,  1),
+    float2( 1, -1)
+};
+
+struct CopyVertexOut {
+    float4 position [[position]];
+    float2 uv;
+};
+
+vertex CopyVertexOut vertexBlit(unsigned short vid [[vertex_id]]) {
+    float2 position = quadVertices[vid];
+
+    CopyVertexOut out;
+
+    out.position = float4(position, 0, 1);
+    out.position.y = -out.position.y;
+    out.uv = position * 0.5f + 0.5f;
+
+    return out;
+}
+
+fragment float4 fragmentBlit(CopyVertexOut in [[stage_in]],
+                             texture2d<float> tex) {
+    constexpr sampler sam(min_filter::nearest, mag_filter::nearest, mip_filter::none);
+
+    return tex.sample(sam, in.uv).xyzw;
+}