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Add RGBA8 -> RGB5A3 macro and utilize for palette colors

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Cuyler36
2023-04-29 22:57:06 -04:00
parent fa4ceb04c4
commit f6fdff5382
2 changed files with 71 additions and 32 deletions
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include/types.h
+6
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@@ -56,4 +56,10 @@ typedef u32 unknown;
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
/* ARGB8 color format (32 bits) to RGB5A3 color format (16 bits) */
#define ARGB8_to_RGB5A3(argb8) \
((u16)(((argb8) & 0xFF000000) >= 0xE0000000 ? \
/* Fully opaque, 5 bits per color channel */ (0x8000 | ((((argb8) >> 16) & 0xF8) << 7) | ((((argb8) >> 8) & 0xF8) << 2) | (((argb8) & 0xFF) >> 3)) : \
/* 3 bits of transparency, 4 bits per color channel */ (((((argb8) >> 24) & 0xE0) << 7) | ((((argb8) >> 16) & 0xF0) << 4) | (((argb8) >> 8) & 0xF0) | (((argb8) & 0xF0) >> 4))))
#endif