port from perforce

hgplus/obliterator/C/ogl2dx.hlsl

@@ -0,0 +1,25 @@
+#ifndef OGL2DX
+#define OGL2DX
+
+#define vec4 float4
+#define vec3 float3
+#define vec2 float2
+
+#define ivec4 int4
+#define ivec3 int3
+#define ivec2 int2
+
+#define uvec4 uint4
+#define uvec3 uint3
+#define uvec2 uint2
+
+float atan(float y, float x) {
+	return atan2(y, x);
+}
+
+#define mix lerp
+#define fract frac
+
+#include "utils.hlsl"
+
+#endif