53 lines
2.0 KiB
Common Lisp
53 lines
2.0 KiB
Common Lisp
/// This file contains all opencl kernels for node-operation implementations
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// Global SAMPLERS
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const sampler_t SAMPLER_NEAREST = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP_TO_EDGE | CLK_FILTER_NEAREST;
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__constant const int2 zero = {0,0};
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// KERNEL --- BOKEH BLUR ---
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__kernel void bokehBlurKernel(__global __read_only image2d_t boundingBox, __global __read_only image2d_t inputImage,
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__global __read_only image2d_t bokehImage, __global __write_only image2d_t output,
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int2 offsetInput, int2 offsetOutput, int radius, int step, int2 dimension, int2 offset)
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{
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int2 coords = {get_global_id(0), get_global_id(1)};
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coords += offset;
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float tempBoundingBox;
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float4 color = {0.0f,0.0f,0.0f,0.0f};
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float4 multiplyer = {0.0f,0.0f,0.0f,0.0f};
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float4 bokeh;
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const float radius2 = radius*2.0f;
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const int2 realCoordinate = coords + offsetOutput;
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tempBoundingBox = read_imagef(boundingBox, SAMPLER_NEAREST, coords).s0;
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if (tempBoundingBox > 0.0f) {
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const int2 bokehImageDim = get_image_dim(bokehImage);
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const int2 bokehImageCenter = bokehImageDim/2;
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const int2 minXY = max(realCoordinate - radius, zero);
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const int2 maxXY = min(realCoordinate + radius, dimension);
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int nx, ny;
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float2 uv;
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int2 inputXy;
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for (ny = minXY.y, inputXy.y = ny - offsetInput.y ; ny < maxXY.y ; ny +=step, inputXy.y+=step) {
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uv.y = ((realCoordinate.y-ny)/radius2)*bokehImageDim.y+bokehImageCenter.y;
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for (nx = minXY.x, inputXy.x = nx - offsetInput.x; nx < maxXY.x ; nx +=step, inputXy.x+=step) {
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uv.x = ((realCoordinate.x-nx)/radius2)*bokehImageDim.x+bokehImageCenter.x;
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bokeh = read_imagef(bokehImage, SAMPLER_NEAREST, uv);
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color += bokeh * read_imagef(inputImage, SAMPLER_NEAREST, inputXy);
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multiplyer += bokeh;
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}
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}
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color /= multiplyer;
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} else {
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int2 imageCoordinates = realCoordinate - offsetInput;
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color = read_imagef(inputImage, SAMPLER_NEAREST, imageCoordinates);
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}
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write_imagef(output, coords, color);
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}
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