var source = "struct GlobalFilterUniforms {\n  uInputSize:vec4<f32>,\n  uInputPixel:vec4<f32>,\n  uInputClamp:vec4<f32>,\n  uOutputFrame:vec4<f32>,\n  uGlobalFrame:vec4<f32>,\n  uOutputTexture:vec4<f32>,\n};\n\nstruct MaskUniforms {\n  uFilterMatrix:mat3x3<f32>,\n  uMaskClamp:vec4<f32>,\n  uAlpha:f32,\n  uInverse:f32,\n};\n\n@group(0) @binding(0) var<uniform> gfu: GlobalFilterUniforms;\n@group(0) @binding(1) var uTexture: texture_2d<f32>;\n@group(0) @binding(2) var uSampler : sampler;\n\n@group(1) @binding(0) var<uniform> filterUniforms : MaskUniforms;\n@group(1) @binding(1) var uMaskTexture: texture_2d<f32>;\n\nstruct VSOutput {\n    @builtin(position) position: vec4<f32>,\n    @location(0) uv : vec2<f32>,\n    @location(1) filterUv : vec2<f32>,\n};\n\nfn filterVertexPosition(aPosition:vec2<f32>) -> vec4<f32>\n{\n    var position = aPosition * gfu.uOutputFrame.zw + gfu.uOutputFrame.xy;\n\n    position.x = position.x * (2.0 / gfu.uOutputTexture.x) - 1.0;\n    position.y = position.y * (2.0*gfu.uOutputTexture.z / gfu.uOutputTexture.y) - gfu.uOutputTexture.z;\n\n    return vec4(position, 0.0, 1.0);\n}\n\nfn filterTextureCoord( aPosition:vec2<f32> ) -> vec2<f32>\n{\n    return aPosition * (gfu.uOutputFrame.zw * gfu.uInputSize.zw);\n}\n\nfn globalTextureCoord( aPosition:vec2<f32> ) -> vec2<f32>\n{\n  return  (aPosition.xy / gfu.uGlobalFrame.zw) + (gfu.uGlobalFrame.xy / gfu.uGlobalFrame.zw);\n}\n\nfn getFilterCoord(aPosition:vec2<f32> ) -> vec2<f32>\n{\n  return ( filterUniforms.uFilterMatrix * vec3( filterTextureCoord(aPosition), 1.0)  ).xy;\n}\n\nfn getSize() -> vec2<f32>\n{\n  return gfu.uGlobalFrame.zw;\n}\n\n@vertex\nfn mainVertex(\n  @location(0) aPosition : vec2<f32>,\n) -> VSOutput {\n  return VSOutput(\n   filterVertexPosition(aPosition),\n   filterTextureCoord(aPosition),\n   getFilterCoord(aPosition)\n  );\n}\n\n@fragment\nfn mainFragment(\n  @location(0) uv: vec2<f32>,\n  @location(1) filterUv: vec2<f32>,\n  @builtin(position) position: vec4<f32>\n) -> @location(0) vec4<f32> {\n\n    var maskClamp = filterUniforms.uMaskClamp;\n    var uAlpha = filterUniforms.uAlpha;\n\n    var clip = step(3.5,\n      step(maskClamp.x, filterUv.x) +\n      step(maskClamp.y, filterUv.y) +\n      step(filterUv.x, maskClamp.z) +\n      step(filterUv.y, maskClamp.w));\n\n    var mask = textureSample(uMaskTexture, uSampler, filterUv);\n    var source = textureSample(uTexture, uSampler, uv);\n    var alphaMul = 1.0 - uAlpha * (1.0 - mask.a);\n\n    var a: f32 = alphaMul * mask.r * uAlpha * clip;\n\n    if (filterUniforms.uInverse == 1.0) {\n        a = 1.0 - a;\n    }\n\n    return source * a;\n}\n";

export { source as default };
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