--track@exposure:Exposure,0,10,1,0.01
--track@gamma:Gamma,0,10,1,0.01
--track@offset:Offset,-1,1,0,0.01
--label:色調整
--[[pixelshader@liftgammagain:
Texture2D InputTexture : register(t0);

cbuffer constant0 : register(b0) {
	float exposure;
	float gamma;
	float offset;
};

float4 liftgammagain(float4 pos : SV_Position) : SV_Target {
    float4 tex = InputTexture[uint2(pos.xy)];
    tex.rgb *= exposure;
    tex.rgb = pow(saturate(tex.rgb),1/gamma);
    tex.rgb=tex.rgb+float3(offset,offset,offset);
    return float4(tex);
}
]]

obj.pixelshader("liftgammagain","object","object",{exposure,gamma,offset})