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struct VSOut
{
float4 position : SV_Position;
float2 txcoord: TexCoord;
};
cbuffer globalParams
{
float2 screenSize;
int captureState;
float4 tileUV;
}
cbuffer controlBuf
{
float g_sldVignette;
}
Texture2D texColor;
SamplerState samLinear;
#ifndef NV_COMMON
#define NV_COMMON
#define CAPTURE_STATE_NOT_STARTED 0
#define CAPTURE_STATE_REGULAR 1
#define CAPTURE_STATE_REGULARSTEREO 2
#define CAPTURE_STATE_HIGHRES 3
#define CAPTURE_STATE_360 4
#define CAPTURE_STATE_360STEREO 5
#endif
/*
float3 vignette(float3 color, float2 texCoords)
{
float2 inTex; // Distance from center
if (captureState == CAPTURE_STATE_HIGHRES)
{
inTex = float2((tileUV.z - tileUV.x) * texCoords.x + tileUV.x, (tileUV.w - tileUV.y) * texCoords.y + tileUV.y) - 0.5.xx;
}
else
{
inTex = texCoords - 0.5.xx;
}
inTex.x *= 1.2; // Slight aspect ratio correction
float vignette = saturate(1.0 - dot( inTex, inTex )); // Length
vignette = saturate(smoothstep(0.3, 1.0, vignette)); // Smoothstep
float3 color_vign = color * vignette;
if (captureState != CAPTURE_STATE_360 && captureState != CAPTURE_STATE_360STEREO)
color = lerp(color, color_vign, g_sldVignette);
return color;
}
*/
float4 PS_Vignette( VSOut IN ): SV_Target
{
float4 color = texColor.Sample(samLinear, IN.txcoord.xy);
float2 inTex = (captureState == CAPTURE_STATE_HIGHRES)
? IN.txcoord.xy * (tileUV.zw - tileUV.xy) + tileUV.xy
: IN.txcoord.xy;
inTex.xy -= 0.5;
inTex.x *= 1.2;
float vignette = dot(inTex,inTex);
vignette = smoothstep(0.7, 0.0, vignette);
vignette = lerp(1.0,vignette,g_sldVignette);
if (captureState != CAPTURE_STATE_360 && captureState != CAPTURE_STATE_360STEREO)
color.rgb *= vignette * vignette;
return color;
}