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- sampler s0 : register(s0);
- float4 p0 : register(c0);
-
- #define height (p0[1])
-
- float4 main(float2 tex : TEXCOORD0) : COLOR
- {
- // original pixel
- float4 c0 = tex2D(s0,tex);
-
- // uncomment to activate for HD only
- /*
- if(height > 719)
- {
- return c0;
- }
- */
-
- // r=c0[0], g=c0[1], b=c0[2]
- // RGB [16,235] to YUV: 601 mode (128 is not added to Cb and Cr)
- float y=0.299*c0[0] + 0.587*c0[1] + 0.114*c0[2];
- float Cb=-0.172*c0[0] -0.339*c0[1] +0.511*c0[2];
- float Cr=0.511*c0[0] -0.428*c0[1] -0.083*c0[2];
-
- // YUV to RGB [16,235]: 709 mode (Cb and Cr are 128 less)
- float r=y+1.540*Cr;
- float g=y-0.459*Cr-0.183*Cb;
- float b=y+1.816*Cb;
-
- return float4(r,g,b,0);
- }
-