init

gamedata/shaders/r2/fencode.hlsli

@@ -0,0 +1,32 @@
+#ifndef FENCODE_H
+#define FENCODE_H
+
+#include "common.hlsli"
+
+uniform float3 v_encodeZ01;
+uniform float3 v_decodeZ01;
+
+float3 encode_tcRG(float z)
+{
+    return z * v_encodeZ01.xyz;
+}
+float2 encode_tcB(float z)
+{
+    return z * v_encodeZ01.z;
+}
+
+// 0..1 encoding with 21 bit precision
+static const float3 pe_scale = {1.f, 128.f, 16384.f};
+static const float3 pe_unscale21 = {2.f / 1.f, 2.f / 128.f, 2.f / 16384.f};
+static const float3 pe_unscale24 = {1.f / 1.f, 1.f / 256.f, 1.f / 65536.f};
+
+float decode_float21(float3 rgb)
+{
+    return dot(rgb, pe_unscale21);
+}
+float decode_float24(float3 rgb)
+{
+    return dot(rgb, pe_unscale24);
+}
+
+#endif