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https://github.com/DerKoun/bsnes-hd.git
synced 2025-04-02 10:52:49 -04:00
48 lines
1 KiB
C++
48 lines
1 KiB
C++
namespace Filter::ScanlinesDark {
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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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auto size(uint& width, uint& height) -> void {
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width = width;
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height = height * 2;
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}
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auto render(
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uint32_t* palette, uint32_t* output, uint outpitch,
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const uint16_t* input, uint pitch, uint width, uint height
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) -> void {
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initialize();
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pitch >>= 1;
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outpitch >>= 2;
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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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}
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