mirror of https://github.com/ZDoom/raze-gles.git
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
#pragma once
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#include <stdint.h>
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struct PalEntry
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{
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PalEntry() = default;
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PalEntry (uint32_t argb) { d = argb; }
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operator uint32_t () const { return d; }
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void SetRGB(PalEntry other)
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{
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d = other.d & 0xffffff;
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}
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PalEntry Modulate(PalEntry other) const
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{
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if (isWhite())
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{
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return other;
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}
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else if (other.isWhite())
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{
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return *this;
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}
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else
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{
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other.r = (r * other.r) / 255;
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other.g = (g * other.g) / 255;
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other.b = (b * other.b) / 255;
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return other;
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}
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}
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int Luminance() const
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{
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return (r * 77 + g * 143 + b * 37) >> 8;
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}
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void Decolorize() // this for 'nocoloredspritelighting' and not the same as desaturation. The normal formula results in a value that's too dark.
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{
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int v = (r + g + b);
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r = g = b = ((255*3) + v + v) / 9;
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}
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bool isBlack() const
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{
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return (d & 0xffffff) == 0;
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}
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bool isWhite() const
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{
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return (d & 0xffffff) == 0xffffff;
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}
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PalEntry &operator= (const PalEntry &other) = default;
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PalEntry &operator= (uint32_t other) { d = other; return *this; }
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PalEntry InverseColor() const { PalEntry nc; nc.a = a; nc.r = 255 - r; nc.g = 255 - g; nc.b = 255 - b; return nc; }
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#ifdef __BIG_ENDIAN__
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PalEntry (uint8_t ir, uint8_t ig, uint8_t ib) : a(0), r(ir), g(ig), b(ib) {}
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PalEntry (uint8_t ia, uint8_t ir, uint8_t ig, uint8_t ib) : a(ia), r(ir), g(ig), b(ib) {}
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union
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{
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struct
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{
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uint8_t a,r,g,b;
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};
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uint32_t d;
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};
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#else
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PalEntry (uint8_t ir, uint8_t ig, uint8_t ib) : b(ib), g(ig), r(ir), a(0) {}
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PalEntry (uint8_t ia, uint8_t ir, uint8_t ig, uint8_t ib) : b(ib), g(ig), r(ir), a(ia) {}
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union
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{
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struct
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{
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uint8_t b,g,r,a;
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};
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uint32_t d;
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};
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#endif
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};
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inline int Luminance(int r, int g, int b)
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{
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return (r * 77 + g * 143 + b * 37) >> 8;
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}
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