44 lines
1 KiB
C
44 lines
1 KiB
C
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#pragma once
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#include "pxl8_dither.h"
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#include "pxl8_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define PXL8_LIGHT_LEVELS 64
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#define PXL8_COLORMAP_SIZE (256 * PXL8_LIGHT_LEVELS)
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#define PXL8_FULLBRIGHT_START 240
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#define PXL8_TRANSPARENT 0
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#define PXL8_DYNAMIC_RANGE_START 144
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#define PXL8_DYNAMIC_RANGE_COUNT 16
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typedef struct {
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u8 table[PXL8_COLORMAP_SIZE];
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} pxl8_colormap;
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typedef struct {
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u8 dark_r, dark_g, dark_b;
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u8 tint_r, tint_g, tint_b;
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f32 tint_strength;
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} pxl8_level_tint;
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void pxl8_colormap_generate(pxl8_colormap* cm, const u32* palette, const pxl8_level_tint* tint);
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static inline u8 pxl8_colormap_lookup(const pxl8_colormap* cm, u8 pal_idx, u8 light) {
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u32 light_idx = light >> 2;
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return cm->table[light_idx * 256 + pal_idx];
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}
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static inline u8 pxl8_colormap_lookup_dithered(const pxl8_colormap* cm, u8 pal_idx, u8 light, u32 x, u32 y) {
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u8 dithered = pxl8_dither_light(light, x, y);
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u32 light_idx = dithered >> 2;
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return cm->table[light_idx * 256 + pal_idx];
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}
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#ifdef __cplusplus
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}
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#endif
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