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https://github.com/italicsjenga/slang-shaders.git
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51 lines
1.3 KiB
Plaintext
51 lines
1.3 KiB
Plaintext
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#version 450
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/*
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Bob-Deinterlacing
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Author: hunterk
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License: Public domain
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Note: This shader is designed to work with the typical interlaced output from an emulator, which displays both even and odd fields twice.
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As such, it is inappropriate for general video use unless the video has already been similarly woven beforehand.
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*/
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layout(push_constant) uniform Push
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{
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vec4 SourceSize;
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vec4 OriginalSize;
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vec4 OutputSize;
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uint FrameCount;
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} params;
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layout(std140, set = 0, binding = 0) uniform UBO
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{
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mat4 MVP;
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} global;
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#pragma stage vertex
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layout(location = 0) in vec4 Position;
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layout(location = 1) in vec2 TexCoord;
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layout(location = 0) out vec2 vTexCoord;
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void main()
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{
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gl_Position = global.MVP * Position;
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vTexCoord = TexCoord;
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}
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#pragma stage fragment
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layout(location = 0) in vec2 vTexCoord;
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layout(location = 0) out vec4 FragColor;
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layout(set = 0, binding = 2) uniform sampler2D Source;
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void main()
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{
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float y = 0.0;
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// assume anything with a vertical resolution greater than 400 lines is interlaced
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if (params.SourceSize.y > 400.0) y = params.SourceSize.y * vTexCoord.y + float(params.FrameCount);
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else y = 2.0 * params.SourceSize.y * vTexCoord.y;
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if (mod(y, 2.0) > 0.99999) FragColor = vec4(texture(Source, vTexCoord + vec2(0.0, params.SourceSize.w)));
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else
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FragColor = vec4(texture(Source, vTexCoord).rgb, 1.0);
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}
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