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Merge pull request #1377 from Andersama/chroma-key-optimization

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obs-filters: Optimize chroma key's box filter
This commit is contained in:
Jim
2018-09-17 02:18:41 -07:00
committed by GitHub
parent 274bf52deb 72cf77102c
commit 8435e581ac
1 changed files with 11 additions and 12 deletions
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23
plugins/obs-filters/data/chroma_key_filter.effect
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@@ -55,17 +55,15 @@ float4 SampleTexture(float2 uv)
float GetBoxFilteredChromaDist(float3 rgb, float2 texCoord)
{
float distVal = GetChromaDist(rgb);
distVal += GetChromaDist(SampleTexture(texCoord-pixel_size).rgb);
distVal += GetChromaDist(SampleTexture(texCoord-float2(pixel_size.x, 0.0)).rgb);
distVal += GetChromaDist(SampleTexture(texCoord-float2(pixel_size.x, -pixel_size.y)).rgb);
distVal += GetChromaDist(SampleTexture(texCoord-float2(0.0, pixel_size.y)).rgb);
distVal += GetChromaDist(SampleTexture(texCoord+float2(0.0, pixel_size.y)).rgb);
distVal += GetChromaDist(SampleTexture(texCoord+float2(pixel_size.x, -pixel_size.y)).rgb);
distVal += GetChromaDist(SampleTexture(texCoord+float2(pixel_size.x, 0.0)).rgb);
distVal += GetChromaDist(SampleTexture(texCoord+pixel_size).rgb);
float2 h_pixel_size = pixel_size / 2.0;
float2 point_0 = float2(pixel_size.x, h_pixel_size.y);
float2 point_1 = float2(h_pixel_size.x, -pixel_size.y);
float distVal = GetChromaDist(SampleTexture(texCoord-point_0).rgb);
distVal += GetChromaDist(SampleTexture(texCoord+point_0).rgb);
distVal += GetChromaDist(SampleTexture(texCoord-point_1).rgb);
distVal += GetChromaDist(SampleTexture(texCoord+point_1).rgb);
distVal *= 2.0;
distVal += GetChromaDist(rgb);
return distVal / 9.0;
}
@@ -76,6 +74,7 @@ float4 ProcessChromaKey(float4 rgba, VertData v_in)
float fullMask = pow(saturate(baseMask / smoothness), 1.5);
float spillVal = pow(saturate(baseMask / spill), 1.5);
rgba.rgba *= color;
rgba.a *= fullMask;
float desat = (rgba.r * 0.2126 + rgba.g * 0.7152 + rgba.b * 0.0722);
@@ -86,7 +85,7 @@ float4 ProcessChromaKey(float4 rgba, VertData v_in)
float4 PSChromaKeyRGBA(VertData v_in) : TARGET
{
float4 rgba = image.Sample(textureSampler, v_in.uv) * color;
float4 rgba = image.Sample(textureSampler, v_in.uv);
return ProcessChromaKey(rgba, v_in);
}