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Fix blue-noise generation

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This commit is contained in:
Stephen Seo 2021-11-10 18:48:16 +09:00
parent d44297d079
commit e715c18a4d
1 changed files with 9 additions and 2 deletions
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11
src/blue_noise.cpp
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@ -397,10 +397,16 @@ std::vector<unsigned int> dither::internal::blue_noise_cl_impl(
std::vector<float> filter(count); std::vector<float> filter(count);
bool reversed_pbp = false;
const auto get_filter = [&queue, &kernel, &global_size, &local_size, const auto get_filter = [&queue, &kernel, &global_size, &local_size,
&d_filter_out, &d_pbp, &pbp, &pbp_i, &count, &filter, &err] () -> bool { &d_filter_out, &d_pbp, &pbp, &pbp_i, &count, &filter, &err, &reversed_pbp] () -> bool {
for(unsigned int i = 0; i < pbp.size(); ++i) { for(unsigned int i = 0; i < pbp.size(); ++i) {
pbp_i[i] = pbp[i] ? 1 : 0; if (reversed_pbp) {
pbp_i[i] = pbp[i] ? 0 : 1;
} else {
pbp_i[i] = pbp[i] ? 1 : 0;
}
} }
if(clEnqueueWriteBuffer(queue, d_pbp, CL_TRUE, 0, count * sizeof(int), &pbp_i[0], 0, nullptr, nullptr) != CL_SUCCESS) { if(clEnqueueWriteBuffer(queue, d_pbp, CL_TRUE, 0, count * sizeof(int), &pbp_i[0], 0, nullptr, nullptr) != CL_SUCCESS) {
std::cerr << "OpenCL: Failed to write to d_pbp buffer\n"; std::cerr << "OpenCL: Failed to write to d_pbp buffer\n";
@ -603,6 +609,7 @@ std::vector<unsigned int> dither::internal::blue_noise_cl_impl(
} }
#endif #endif
std::cout << "\nRanking last half of pixels...\n"; std::cout << "\nRanking last half of pixels...\n";
reversed_pbp = true;
for (unsigned int i = (count + 1) / 2; i < (unsigned int)count; ++i) { for (unsigned int i = (count + 1) / 2; i < (unsigned int)count; ++i) {
std::cout << i << ' '; std::cout << i << ' ';
get_filter(); get_filter();