Add do-nothing-conversions for gamma expansion/compression if we are already linear...

[movit] / identity.glsl

diff --git a/identity.glsl b/identity.glsl
new file mode 100644 (file)
index 0000000..ca41262
--- /dev/null
+++ b/identity.glsl
@@ -0,0 +1,5 @@
+// Identity transformation (sometimes useful to do nothing).
+vec4 FUNCNAME(vec2 tc)
+{
+       return LAST_INPUT(tc);
+}