/***************************************************************************************/
/*! DopeShader v2.0
****************************************************************************************/
#include "Common.usf"
#include "PostProcessCommon.usf"

// Bloom parameterse.
sampler2D BlurredImage;

// Tone-mapping parameters.
sampler2D AdaptedLuminance;
static const float WHITE = pow(1, 2);

// The per-color weighting to be used for luminance calculations in RGB order.
static const float3 LuminanceVector = float3(0.3, 0.59, 0.11);

// Perform tone mapping on a pixel.
float3 ToneMap(float3 WorldColor)
{
	float fAdaptedLuminance = tex2D(AdaptedLuminance,float2(0.5,0.5));
	float lum = saturate(0.1 + WorldColor) * (LuminanceVector / fAdaptedLuminance);
	lum = lum * (lum / WHITE) / lum;
	return pow(WorldColor * lum, 1.0);
}

void Main(
	in float2 UV : TEXCOORD0,
	in float2 SceneUV : TEXCOORD1,
	out float4 OutColor : COLOR0
	)
{
	float4 sceneColor = tex2D(SceneColorTexture,SceneUV);
	float4 rawColor = tex2D(BlurredImage,UV);
	float3 filteredColor = MAX_SCENE_COLOR * rawColor.rgb;
	float3 RTWBloom = 1-(saturate(1-(filteredColor.rgb*0.02))*saturate(1-lerp(sceneColor.rgb, 0, saturate(rawColor.a*4)*0.02)));
	float3 ToneMappedColor = ToneMap(RTWBloom);
	OutColor = float4(ToneMappedColor.rgb, sceneColor.a);
}