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improve sw renderer

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asrael 2026-01-21 23:19:50 -06:00
parent 415d424057
commit 39ee0fefb7
89 changed files with 9380 additions and 2307 deletions
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62
src/gfx/pxl8_colormap.h
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@ -7,35 +7,65 @@
extern "C" {
#endif
#define PXL8_LIGHT_LEVELS 64
#define PXL8_COLORMAP_SIZE (256 * PXL8_LIGHT_LEVELS)
#define PXL8_LIGHT_COLORS 8
#define PXL8_LIGHT_LEVELS 8
#define PXL8_LIGHT_ROWS (PXL8_LIGHT_COLORS * PXL8_LIGHT_LEVELS)
#define PXL8_BLEND_ROWS 256
#define PXL8_COLORMAP_ROWS (PXL8_LIGHT_ROWS + PXL8_BLEND_ROWS)
#define PXL8_COLORMAP_SIZE (256 * PXL8_COLORMAP_ROWS)
#define PXL8_FULLBRIGHT_START 240
#define PXL8_TRANSPARENT 0
#define PXL8_DYNAMIC_RANGE_START 144
#define PXL8_DYNAMIC_RANGE_COUNT 16
typedef enum {
PXL8_LIGHT_WHITE = 0,
PXL8_LIGHT_RED = 1,
PXL8_LIGHT_ORANGE = 2,
PXL8_LIGHT_YELLOW = 3,
PXL8_LIGHT_GREEN = 4,
PXL8_LIGHT_CYAN = 5,
PXL8_LIGHT_BLUE = 6,
PXL8_LIGHT_PURPLE = 7,
} pxl8_light_color;
typedef struct {
u8 r, g, b;
} pxl8_rgb;
static const pxl8_rgb pxl8_light_colors[PXL8_LIGHT_COLORS] = {
{255, 255, 255},
{255, 64, 64},
{255, 160, 64},
{255, 255, 64},
{64, 255, 64},
{64, 255, 255},
{64, 64, 255},
{255, 64, 255},
};
typedef struct {
u8 table[PXL8_COLORMAP_SIZE];
} pxl8_colormap;
typedef struct {
u8 dark_r, dark_g, dark_b;
u8 tint_r, tint_g, tint_b;
f32 tint_strength;
} pxl8_level_tint;
void pxl8_colormap_generate(pxl8_colormap* cm, const u32* palette);
void pxl8_set_colormap(pxl8_colormap* cm, const u8* data, u32 size);
void pxl8_colormap_generate(pxl8_colormap* cm, const u32* palette, const pxl8_level_tint* tint);
static inline u8 pxl8_colormap_lookup(const pxl8_colormap* cm, u8 pal_idx, u8 light) {
u32 light_idx = light >> 2;
return cm->table[light_idx * 256 + pal_idx];
static inline u8 pxl8_colormap_lookup(const pxl8_colormap* cm, u8 pal_idx, pxl8_light_color light_color, u8 intensity) {
u32 light_row = ((u32)light_color << 3) + (intensity >> 5);
return cm->table[(light_row << 8) + pal_idx];
}
static inline u8 pxl8_colormap_lookup_dithered(const pxl8_colormap* cm, u8 pal_idx, u8 light, u32 x, u32 y) {
u8 dithered = pxl8_dither_light(light, x, y);
u32 light_idx = dithered >> 2;
return cm->table[light_idx * 256 + pal_idx];
static inline u8 pxl8_colormap_lookup_dithered(const pxl8_colormap* cm, u8 pal_idx, pxl8_light_color light_color, u8 intensity, u32 x, u32 y) {
u8 dithered = pxl8_dither_light(intensity, x, y);
u32 light_row = ((u32)light_color << 3) + (dithered >> 5);
return cm->table[(light_row << 8) + pal_idx];
}
static inline u8 pxl8_colormap_blend(const pxl8_colormap* cm, u8 src, u8 dst) {
u32 blend_row = PXL8_LIGHT_ROWS + src;
return cm->table[(blend_row << 8) + dst];
}
#ifdef __cplusplus