X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=lift_gamma_gain_effect.cpp;h=acfeb86875a8841aabbc91a8602186713371087e;hb=bfa58911af9e945f3532a2c48306b4e9e293e0f7;hp=149cb4463931dc9836df4360dd35a2480ea3d0fd;hpb=6a6d09d15fe9388db0490249928e5b8252b6b9ce;p=movit

diff --git a/lift_gamma_gain_effect.cpp b/lift_gamma_gain_effect.cpp
index 149cb44..acfeb86 100644
--- a/lift_gamma_gain_effect.cpp
+++ b/lift_gamma_gain_effect.cpp
@@ -1,3 +1,9 @@
+#define GL_GLEXT_PROTOTYPES 1
+
+#include <math.h>
+#include <GL/gl.h>
+#include <GL/glext.h>
+
 #include "lift_gamma_gain_effect.h"
 #include "util.h"
 
@@ -17,3 +23,20 @@ std::string LiftGammaGainEffect::output_glsl()
 {
 	return read_file("lift_gamma_gain_effect.glsl");
 }
+
+void LiftGammaGainEffect::set_uniforms(GLhandleARB glsl_program_num, const std::string &prefix)
+{
+	Effect::set_uniforms(glsl_program_num, prefix);
+
+	RGBTriplet gain_pow_inv_gamma(
+		pow(gain.r, 1.0f / gamma.r),
+		pow(gain.g, 1.0f / gamma.g),
+		pow(gain.b, 1.0f / gamma.b));
+	set_uniform_vec3(glsl_program_num, prefix, "gain_pow_inv_gamma", (float *)&gain_pow_inv_gamma);
+
+	RGBTriplet inv_gamma_22(
+		2.2f / gamma.r,
+		2.2f / gamma.g,
+		2.2f / gamma.b);
+	set_uniform_vec3(glsl_program_num, prefix, "inv_gamma_22", (float *)&gain_pow_inv_gamma);
+}