mirror of https://github.com/bsnes-emu/bsnes.git
56 lines
1.3 KiB
C++
Executable File
56 lines
1.3 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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uint16_t adjust[32768];
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void initialize() {
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static bool initialized = false;
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if(initialized == true) return;
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initialized = true;
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for(unsigned i = 0; i < 32768; i++) {
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uint8_t r = (i >> 10) & 31;
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uint8_t g = (i >> 5) & 31;
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uint8_t b = (i >> 0) & 31;
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r *= 0.333;
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g *= 0.333;
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b *= 0.333;
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adjust[i] = (r << 10) + (g << 5) + (b << 0);
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}
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}
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dllexport void filter_size(unsigned &width, unsigned &height) {
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initialize();
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height *= 2;
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}
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dllexport void filter_render(
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uint32_t *palette, 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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initialize();
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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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const uint16_t *in = input + y * pitch;
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uint32_t *out0 = output + y * outpitch * 2;
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uint32_t *out1 = output + y * outpitch * 2 + outpitch;
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for(unsigned x = 0; x < width; x++) {
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uint16_t color = *in++;
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*out0++ = palette[color];
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*out1++ = palette[adjust[color]];
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}
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}
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}
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