Fix a small overallocation.
[movit] / lift_gamma_gain_effect.cpp
1 #include <GL/glew.h>
2 #include <math.h>
3
4 #include "effect_util.h"
5 #include "lift_gamma_gain_effect.h"
6 #include "util.h"
7
8 using namespace std;
9
10 namespace movit {
11
12 LiftGammaGainEffect::LiftGammaGainEffect()
13         : lift(0.0f, 0.0f, 0.0f),
14           gamma(1.0f, 1.0f, 1.0f),
15           gain(1.0f, 1.0f, 1.0f)
16 {
17         register_vec3("lift", (float *)&lift);
18         register_vec3("gamma", (float *)&gamma);
19         register_vec3("gain", (float *)&gain);
20 }
21
22 string LiftGammaGainEffect::output_fragment_shader()
23 {
24         return read_file("lift_gamma_gain_effect.frag");
25 }
26
27 void LiftGammaGainEffect::set_gl_state(GLuint glsl_program_num, const string &prefix, unsigned *sampler_num)
28 {
29         Effect::set_gl_state(glsl_program_num, prefix, sampler_num);
30
31         RGBTriplet gain_pow_inv_gamma(
32                 pow(gain.r, 1.0f / gamma.r),
33                 pow(gain.g, 1.0f / gamma.g),
34                 pow(gain.b, 1.0f / gamma.b));
35         set_uniform_vec3(glsl_program_num, prefix, "gain_pow_inv_gamma", (float *)&gain_pow_inv_gamma);
36
37         RGBTriplet inv_gamma_22(
38                 2.2f / gamma.r,
39                 2.2f / gamma.g,
40                 2.2f / gamma.b);
41         set_uniform_vec3(glsl_program_num, prefix, "inv_gamma_22", (float *)&inv_gamma_22);
42 }
43
44 }  // namespace movit