Refactor framebuffer

data/shaders/post_processing.frag

@@ -1,14 +1,12 @@
 #version 330 core
 
 const float GAMMA = 2.2f;
+const float EXPOSURE = 1.0f;
 
 layout(location = 0) out vec4 f_color;
 
 in vec2 v_tex_coords;
 
-uniform float u_exposure;
-uniform bool u_exposureCorrection;
-
 uniform sampler2D u_texture;
 
 void main() {
@@ -16,8 +14,7 @@ void main() {
     vec3 fragmentColor = vec3(texture2D(u_texture, v_tex_coords));
 
     // Exposure tone mapping
-    if(u_exposureCorrection)
-        fragmentColor = vec3(1.0) - exp(-fragmentColor * u_exposure);
+    fragmentColor = vec3(1.0) - exp(-fragmentColor * EXPOSURE);
 
     // Gamma correction
     fragmentColor = pow(fragmentColor, vec3(1.0/GAMMA));