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better lighting

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asrael 2026-01-31 09:31:17 -06:00
parent 805a2713a3
commit 6ed4e17065
75 changed files with 6417 additions and 3667 deletions
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115
src/gfx/pxl8_color.h
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@ -6,45 +6,6 @@ static inline i32 pxl8_bytes_per_pixel(pxl8_pixel_mode mode) {
return (i32)mode;
}
static inline u16 pxl8_rgb565_pack(u8 r, u8 g, u8 b) {
return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
}
static inline void pxl8_rgb565_unpack(u16 color, u8* r, u8* g, u8* b) {
*r = (color >> 11) << 3;
*g = ((color >> 5) & 0x3F) << 2;
*b = (color & 0x1F) << 3;
}
static inline u16 pxl8_rgba32_to_rgb565(u32 rgba) {
return pxl8_rgb565_pack(rgba & 0xFF, (rgba >> 8) & 0xFF, (rgba >> 16) & 0xFF);
}
static inline u32 pxl8_rgb565_to_rgba32(u16 color) {
u8 r, g, b;
pxl8_rgb565_unpack(color, &r, &g, &b);
return r | ((u32)g << 8) | ((u32)b << 16) | 0xFF000000;
}
static inline void pxl8_rgba32_unpack(u32 color, u8* r, u8* g, u8* b, u8* a) {
*r = color & 0xFF;
*g = (color >> 8) & 0xFF;
*b = (color >> 16) & 0xFF;
*a = (color >> 24) & 0xFF;
}
static inline u32 pxl8_rgba32_pack(u8 r, u8 g, u8 b, u8 a) {
return r | ((u32)g << 8) | ((u32)b << 16) | ((u32)a << 24);
}
static inline u32 pxl8_color_to_rgba(u32 abgr) {
u8 r = abgr & 0xFF;
u8 g = (abgr >> 8) & 0xFF;
u8 b = (abgr >> 16) & 0xFF;
u8 a = (abgr >> 24) & 0xFF;
return ((u32)r << 24) | ((u32)g << 16) | ((u32)b << 8) | a;
}
static inline u32 pxl8_color_from_rgba(u32 rgba) {
u8 r = (rgba >> 24) & 0xFF;
u8 g = (rgba >> 16) & 0xFF;
@ -57,6 +18,51 @@ static inline u8 pxl8_color_lerp_channel(u8 c1, u8 c2, f32 t) {
return c1 + (i32)((c2 - c1) * t);
}
static inline f32 pxl8_color_hue(u32 color) {
u8 r = color & 0xFF;
u8 g = (color >> 8) & 0xFF;
u8 b = (color >> 16) & 0xFF;
u8 max = r > g ? (r > b ? r : b) : (g > b ? g : b);
u8 min = r < g ? (r < b ? r : b) : (g < b ? g : b);
if (max == min) return 0.0f;
f32 d = (f32)(max - min);
f32 h;
if (max == r) h = (f32)(g - b) / d + (g < b ? 6.0f : 0.0f);
else if (max == g) h = (f32)(b - r) / d + 2.0f;
else h = (f32)(r - g) / d + 4.0f;
return h / 6.0f;
}
static inline f32 pxl8_color_hue_diff(f32 h1, f32 h2) {
f32 d = h1 > h2 ? h1 - h2 : h2 - h1;
return d > 0.5f ? 1.0f - d : d;
}
static inline f32 pxl8_color_luminance(u32 color) {
u8 r = color & 0xFF;
u8 g = (color >> 8) & 0xFF;
u8 b = (color >> 16) & 0xFF;
return 0.299f * r + 0.587f * g + 0.114f * b;
}
static inline f32 pxl8_color_saturation(u32 color) {
u8 r = color & 0xFF;
u8 g = (color >> 8) & 0xFF;
u8 b = (color >> 16) & 0xFF;
u8 max = r > g ? (r > b ? r : b) : (g > b ? g : b);
u8 min = r < g ? (r < b ? r : b) : (g < b ? g : b);
if (max == 0) return 0.0f;
return (f32)(max - min) / (f32)max;
}
static inline u32 pxl8_color_to_rgba(u32 abgr) {
u8 r = abgr & 0xFF;
u8 g = (abgr >> 8) & 0xFF;
u8 b = (abgr >> 16) & 0xFF;
u8 a = (abgr >> 24) & 0xFF;
return ((u32)r << 24) | ((u32)g << 16) | ((u32)b << 8) | a;
}
static inline u8 pxl8_rgb332_pack(u8 r, u8 g, u8 b) {
return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
}
@ -69,3 +75,34 @@ static inline void pxl8_rgb332_unpack(u8 c, u8* r, u8* g, u8* b) {
*g = (gi << 5) | (gi << 2) | (gi >> 1);
*b = (bi << 6) | (bi << 4) | (bi << 2) | bi;
}
static inline u16 pxl8_rgb565_pack(u8 r, u8 g, u8 b) {
return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
}
static inline void pxl8_rgb565_unpack(u16 color, u8* r, u8* g, u8* b) {
*r = (color >> 11) << 3;
*g = ((color >> 5) & 0x3F) << 2;
*b = (color & 0x1F) << 3;
}
static inline u32 pxl8_rgb565_to_rgba32(u16 color) {
u8 r, g, b;
pxl8_rgb565_unpack(color, &r, &g, &b);
return r | ((u32)g << 8) | ((u32)b << 16) | 0xFF000000;
}
static inline u32 pxl8_rgba32_pack(u8 r, u8 g, u8 b, u8 a) {
return r | ((u32)g << 8) | ((u32)b << 16) | ((u32)a << 24);
}
static inline u16 pxl8_rgba32_to_rgb565(u32 rgba) {
return pxl8_rgb565_pack(rgba & 0xFF, (rgba >> 8) & 0xFF, (rgba >> 16) & 0xFF);
}
static inline void pxl8_rgba32_unpack(u32 color, u8* r, u8* g, u8* b, u8* a) {
*r = color & 0xFF;
*g = (color >> 8) & 0xFF;
*b = (color >> 16) & 0xFF;
*a = (color >> 24) & 0xFF;
}