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#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout(push_constant) uniform PushConsts {
float exposure;
float gamma;
};
vec3 Uncharted2Tonemap(vec3 color)
{
const float A = 0.15;
const float B = 0.50;
const float C = 0.10;
const float D = 0.20;
const float E = 0.02;
const float F = 0.30;
const float W = 11.2;
return ((color*(A*color+C*B)+D*E)/(color*(A*color+B)+D*F))-E/F;
}
vec4 tonemap(vec4 color, float exposure, float gamma)
{
vec3 outcol = Uncharted2Tonemap(color.rgb * exposure);
outcol = outcol * (1.0f / Uncharted2Tonemap(vec3(11.2f)));
return vec4(pow(outcol, vec3(1.0f / gamma)), color.a);
}
vec4 SRGBtoLINEAR(vec4 srgbIn)
{
#ifdef MANUAL_SRGB
#ifdef SRGB_FAST_APPROXIMATION
vec3 linOut = pow(srgbIn.xyz,vec3(2.2));
#else //SRGB_FAST_APPROXIMATION
vec3 bLess = step(vec3(0.04045),srgbIn.xyz);
vec3 linOut = mix( srgbIn.xyz/vec3(12.92), pow((srgbIn.xyz+vec3(0.055))/vec3(1.055),vec3(2.4)), bLess );
#endif //SRGB_FAST_APPROXIMATION
return vec4(linOut,srgbIn.w);;
#else //MANUAL_SRGB
return srgbIn;
#endif //MANUAL_SRGB
}
layout (constant_id = 0) const float NEAR_PLANE = 0.1f;
layout (constant_id = 1) const float FAR_PLANE = 32.0f;
layout (set = 0, binding = 0) uniform sampler2D uiImage;
layout (set = 0, binding = 1) uniform sampler2D samplerHDR;
layout (location = 0) in vec2 inUV;
layout (location = 0) out vec4 outColor;
void main()
{
vec4 hdrColor = texture(samplerHDR, inUV);
vec4 uiColor = texture(uiImage, inUV);
outColor = tonemap(hdrColor, exposure, gamma);
outColor = vec4(outColor.rgb * (1 - uiColor.a) + uiColor.rgb * uiColor.a, 1);
}
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