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

[movit] / gamma_expansion_effect.cpp

diff --git a/gamma_expansion_effect.cpp b/gamma_expansion_effect.cpp
index 1ecc897c00d73172e8205c48cb04a43a858eaea0..74a8de983a299dd85952ebf78e678851a8fcb1de 100644 (file)
--- a/gamma_expansion_effect.cpp
+++ b/gamma_expansion_effect.cpp
@@ -12,6 +12,8 @@ GammaExpansionEffect::GammaExpansionEffect()
 std::string GammaExpansionEffect::output_glsl()
 {
        switch (source_curve) {
+       case GAMMA_LINEAR:
+               return read_file("identity.glsl");
        case GAMMA_sRGB:
                return read_file("gamma_expansion_effect_srgb.glsl");
        case GAMMA_REC_709:  // and GAMMA_REC_601