1 files changed, 18 insertions, 0 deletions
diff --git a/engine/src/core-effects/Common/MatDefs/Post/Posterization.frag b/engine/src/core-effects/Common/MatDefs/Post/Posterization.frag
new file mode 100644
index 0000000..d184bc6
--- /dev/null
+++ b/engine/src/core-effects/Common/MatDefs/Post/Posterization.frag
@@ -0,0 +1,18 @@
+uniform sampler2D m_Texture;
+varying vec2 texCoord;
+ 
+uniform int m_NumColors;
+uniform float m_Gamma;
+uniform float m_Strength;
+ 
+void main() {
+    vec4 texVal = texture2D(m_Texture, texCoord);
+ 
+    texVal = pow(texVal, vec4(m_Gamma));
+    texVal = texVal * vec4(m_NumColors);
+    texVal = floor(texVal);
+    texVal = texVal / vec4(m_NumColors);
+    texVal = pow(texVal, vec4(1.0/m_Gamma));
+ 
+    gl_FragColor = mix(texture2D(m_Texture, texCoord), texVal, m_Strength);
+}
+\ No newline at end of file