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cbuffer globalParams
{
float2 screenSize;
float elapsedTime;
int captureState;
float4 tileUV;
}
cbuffer controlBuf
{
float g_sldIntensity;
bool g_sldEnableDepth;
float g_sldDistance;
bool g_sldInvert;
}
Texture2D texColor;
Texture2D texDepth;
SamplerState samLinear;
SamplerState samLinearWrap;
float GetLinearDepth(float2 uv)
{
#define DepthParameters float4(1.0,1000.0,-999.0f,0.0)
float depth = 1.0 - texDepth.SampleLevel(samLinear, uv, 0).x;
depth *= rcp(DepthParameters.y + depth * DepthParameters.z);
return saturate(depth);
}
void PSMain(in float4 vpos : SV_Position, in float2 uv : TexCoord, out float4 color : SV_Target)
{
color = texColor.Sample(samLinear, uv);
float linear_depth = GetLinearDepth(uv);
float desat_mask = linear_depth > (g_sldDistance * g_sldDistance) * (g_sldDistance * g_sldDistance);
color.rgb = lerp(color.rgb,
dot(color.rgb, float3(0.2126, 0.7152, 0.0722)),
g_sldIntensity * lerp(1, lerp(desat_mask, 1 - desat_mask, g_sldInvert), g_sldEnableDepth));
}