mirror of https://github.com/bsnes-emu/bsnes.git
55 lines
1.6 KiB
C++
Executable File
55 lines
1.6 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*, uint32_t*, unsigned, const uint16_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 *colortable, uint32_t *output, unsigned outpitch,
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const uint16_t *input, unsigned pitch, unsigned width, unsigned height
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) {
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pitch >>= 1;
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outpitch >>= 2;
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uint32_t *out0 = output;
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uint32_t *out1 = output + outpitch;
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for(unsigned y = 0; y < height; y++) {
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int prevline = (y == 0 ? 0 : pitch);
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int nextline = (y == height - 1 ? 0 : pitch);
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for(unsigned x = 0; x < width; x++) {
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uint16_t A = *(input - prevline);
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uint16_t B = (x > 0) ? *(input - 1) : *input;
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uint16_t C = *input;
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uint16_t D = (x < width - 1) ? *(input + 1) : *input;
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uint16_t E = *(input++ + nextline);
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uint32_t c = colortable[C];
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if(A != E && B != D) {
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*out0++ = (A == B ? colortable[C + A - ((C ^ A) & 0x0421) >> 1] : c);
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*out0++ = (A == D ? colortable[C + A - ((C ^ A) & 0x0421) >> 1] : c);
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*out1++ = (E == B ? colortable[C + E - ((C ^ E) & 0x0421) >> 1] : c);
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*out1++ = (E == D ? colortable[C + E - ((C ^ E) & 0x0421) >> 1] : 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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input += pitch - width;
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out0 += outpitch + outpitch - (width << 1);
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out1 += outpitch + outpitch - (width << 1);
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}
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}
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