diffuse/albedo texture linearization

http://http.developer.nvidia.com/GPUGems3/gpugems3_ch24.html

Templates/Full/game/shaders/common/postFx/gammaP.hlsl

@@ -28,7 +28,8 @@ uniform sampler2D backBuffer : register(S0);
 uniform sampler1D colorCorrectionTex : register( s1 );
 
 uniform float OneOverGamma;
-
+uniform float Brightness;
+uniform float Contrast;
 
 float4 main( PFXVertToPix IN ) : COLOR0  
 {
@@ -42,5 +43,11 @@ float4 main( PFXVertToPix IN ) : COLOR0
    // Apply gamma correction
     color.rgb = pow( abs(color.rgb), OneOverGamma );
 
+   // Apply contrast
+   color.rgb = ((color.rgb - 0.5f) * Contrast) + 0.5f;
+ 
+   // Apply brightness
+   color.rgb += Brightness;
+
     return color;    
 }

Templates/Full/game/shaders/common/postFx/gl/gammaP.glsl

@@ -28,6 +28,8 @@ uniform sampler2D backBuffer;
 uniform sampler1D colorCorrectionTex;
 
 uniform float OneOverGamma;
+uniform float Brightness;
+uniform float Contrast;
 
 in vec2 uv0;
 
@@ -45,5 +47,11 @@ void main()
    // Apply gamma correction
    color.rgb = pow( abs(color.rgb), vec3(OneOverGamma) );
 
+   // Apply contrast
+   color.rgb = ((color.rgb - 0.5f) * Contrast) + 0.5f;
+ 
+   // Apply brightness
+   color.rgb += Brightness;
+   
    OUT_col = color;
 }

Templates/Full/game/shaders/common/postFx/hdr/finalPassCombineP.hlsl

@@ -41,6 +41,8 @@ uniform float3 g_fBlueShiftColor;
 uniform float g_fBloomScale;
 
 uniform float g_fOneOverGamma;
+uniform float Brightness;
+uniform float Contrast;
 
 
 float4 main( PFXVertToPix IN ) : COLOR0
@@ -90,6 +92,12 @@ float4 main( PFXVertToPix IN ) : COLOR0
 
    // Apply gamma correction
    sample.rgb = pow( abs(sample.rgb), g_fOneOverGamma );
+ 
+   // Apply contrast
+   sample.rgb = ((sample.rgb - 0.5f) * Contrast) + 0.5f;
+ 
+   // Apply brightness
+   sample.rgb += Brightness;
 
    return sample;
 }

Templates/Full/game/shaders/common/postFx/hdr/gl/finalPassCombineP.glsl

@@ -42,6 +42,8 @@ uniform vec3 g_fBlueShiftColor;
 uniform float g_fBloomScale;
 
 uniform float g_fOneOverGamma;
+uniform float Brightness;
+uniform float Contrast;
 
 out vec4 OUT_col;
 
@@ -93,6 +95,12 @@ void main()
 
    // Apply gamma correction
    _sample.rgb = pow( abs(_sample.rgb), vec3(g_fOneOverGamma) );
+   
+   // Apply contrast
+   _sample.rgb = ((_sample.rgb - 0.5f) * Contrast) + 0.5f;
+ 
+   // Apply brightness
+   _sample.rgb += Brightness;
 
    OUT_col = _sample;
 }