26 lines
732 B
C
26 lines
732 B
C
__kernel void do_filter(
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__global float *filter_out, __global float *precomputed,
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__global int *pbp, int width, int height, int filter_size) {
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int i = get_global_id(0);
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if(i < 0 || i >= width * height) {
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return;
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}
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int x = i % width;
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int y = i / width;
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float sum = 0.0f;
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for(int q = 0; q < filter_size; ++q) {
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int q_prime = (height + filter_size / 2 + y - q) % height;
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for(int p = 0; p < filter_size; ++p) {
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int p_prime = (width + filter_size / 2 + x - p) % width;
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if(pbp[p_prime + q_prime * width] != 0) {
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sum += precomputed[p + q * filter_size];
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}
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}
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}
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filter_out[i] = sum;
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}
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// vim: syntax=c
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