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PC World 2007 April
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Procamp.txt
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2006-11-01
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65 lines
// procamp=ps_2_0
// Code from MPC
sampler s0 : register(s0);
float4 p0 : register(c0);
float4 p1 : register(c1);
#define width (p0[0])
#define height (p0[1])
#define counter (p0[2])
#define clock (p0[3])
#define one_over_width (p1[0])
#define one_over_height (p1[1])
#define PI acos(-1)
static float4x4 r2y =
{
0.299, 0.587, 0.114, 0,
-0.147, -0.289, 0.437, 0,
0.615, -0.515, -0.100, 0,
0, 0, 0, 0
};
static float4x4 y2r =
{
1.0, 0.0, 1.140, 0,
1.0, -0.394, -0.581, 0,
1.0, 2.028, 0.0, 0,
0, 0, 0, 0
};
#define ymin (16.0/255)
#define ymax (235.0/255)
// Brightness: -1.0 to 1.0, default 0.0
// Contrast: 0.0 to 10.0, default 1.0
// Hue: -180.0 to +180.0, default 0.0
// Saturation: 0.0 to 10.0, default 1.0
#define Brightness 0.0
#define Contrast 1.0
#define Hue 0.0
#define Saturation 1.0
// tv -> pc scale
// #define Brightness (-ymin)
// #define Contrast (1.0/(ymax-ymin))
static float2x2 HueMatrix =
{
cos(Hue * PI / 180), sin(Hue * PI / 180),
-sin(Hue * PI / 180), cos(Hue * PI / 180)
};
float4 main(float2 tex : TEXCOORD0) : COLOR
{
float4 c0 = tex2D(s0, tex);
c0 = mul(r2y, c0);
c0.r = Contrast * (c0.r - ymin) + ymin + Brightness;
c0.gb = mul(HueMatrix, c0.gb) * Saturation;
c0 = mul(y2r, c0);
return c0;
}