mirror of https://github.com/bsnes-emu/bsnes.git
52 lines
1.4 KiB
C++
Executable File
52 lines
1.4 KiB
C++
Executable File
#include <nall/platform.hpp>
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#include <nall/stdint.hpp>
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using namespace nall;
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extern "C" {
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void filter_size(unsigned&, unsigned&);
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void filter_render(uint32_t*, unsigned, const uint32_t*, unsigned, unsigned, unsigned);
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};
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dllexport void filter_size(unsigned &width, unsigned &height) {
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width *= 2;
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height *= 2;
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}
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dllexport void filter_render(
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uint32_t *output, unsigned outputPitch,
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const uint32_t *input, unsigned inputPitch,
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unsigned width, unsigned height
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) {
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outputPitch >>= 2, inputPitch >>= 2;
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#pragma omp parallel for
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for(unsigned y = 0; y < height; y++) {
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const uint32_t *in = input + y * inputPitch;
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uint32_t *out0 = output + y * outputPitch * 2;
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uint32_t *out1 = output + y * outputPitch * 2 + outputPitch;
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int prevline = (y == 0 ? 0 : inputPitch);
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int nextline = (y == height - 1 ? 0 : inputPitch);
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for(unsigned x = 0; x < width; x++) {
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uint32_t A = *(in - prevline);
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uint32_t B = (x > 0) ? *(in - 1) : *in;
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uint32_t C = *in;
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uint32_t D = (x < width - 1) ? *(in + 1) : *in;
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uint32_t E = *(in++ + nextline);
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if(A != E && B != D) {
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*out0++ = (A == B ? A : C);
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*out0++ = (A == D ? A : C);
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*out1++ = (E == B ? E : C);
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*out1++ = (E == D ? E : C);
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} else {
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*out0++ = C;
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*out0++ = C;
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*out1++ = C;
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*out1++ = C;
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}
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}
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}
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}
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