1 files changed, 16 insertions, 2 deletions
diff --git a/res/effectlib/customMaterial.glsllib b/res/effectlib/customMaterial.glsllib
index 0a4d88b..83756ec 100644
--- a/res/effectlib/customMaterial.glsllib
+++ b/res/effectlib/customMaterial.glsllib
@@ -31,8 +31,22 @@
 #ifndef CUSTOM_MATERIAL_GLSLLIB
 #define CUSTOM_MATERIAL_GLSLLIB 1
 
-#define SNAPPER_SAMPLER2D(samplerName, samplerNiceName, texFilter, texWrap, showUI )\
-uniform sampler2D samplerName;
+vec4 getTransformedSample(sampler2D sampler, vec2 coord, vec3 transformU, vec3 transformV)
+{
+    const vec3 coord3 = vec3(coord, 1.0);
+    return texture(sampler, vec2(dot(transformU, coord3), dot(transformV, coord3)));
+}
+
+#define SNAPPER_SAMPLER2D(samplerName, samplerNiceName, texFilter, texWrap, showUI ) \
+    uniform sampler2D samplerName; \
+    uniform vec3 samplerName##TransformU; \
+    uniform vec3 samplerName##TransformV; \
+    vec4 samplerName##Transformed(vec2 coord) \
+    {   \
+        return getTransformedSample(samplerName, coord, samplerName##TransformU, samplerName##TransformV); \
+    }
+
+
 
 // some useful defines
 #ifndef PI