Add an OCIO Grading Transform Node

app/shaders/ociogradingtransform.frag

@@ -0,0 +1,13 @@
+uniform sampler2D tex_in;
+varying vec2 ove_texcoord;
+
+// Program will replace this with OCIO's auto-generated shader code
+%1
+
+void main() {
+  vec4 col = texture2D(tex_in, ove_texcoord);
+
+  col = OCIOGradingTransform(col);
+
+  gl_FragColor = col;
+}