wartana/WLED
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

speed optimisations, fix for restoreColorLossy, code cleanup (#4895)

Browse Source 
- speed optimization in color_add, PS fast_color_add and blur functions
- applying more bit and shift manipulation tricks to squeeze out just a bit more speed on color manipulation functions.
- Optimization on blur is based on work by @blazoncek
- Renamed PS fast_color_add() to fast_color_scaleAdd()
This commit is contained in:
Damian Schneider
2025-09-23 20:15:42 +02:00
committed by GitHub
parent c6b4c77387
commit 8b3975752c
9 changed files with 138 additions and 149 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
wled00/colors.h
View File

@@ -117,6 +117,7 @@ class NeoGammaWLEDMethod {
[[gnu::hot, gnu::pure]] uint32_t color_blend(uint32_t c1, uint32_t c2 , uint8_t blend);
inline uint32_t color_blend16(uint32_t c1, uint32_t c2, uint16_t b) { return color_blend(c1, c2, b >> 8); };
[[gnu::hot, gnu::pure]] uint32_t color_add(uint32_t, uint32_t, bool preserveCR = false);
[[gnu::hot, gnu::pure]] uint32_t color_fade(uint32_t c1, uint8_t amount, bool video = false);
[[gnu::hot, gnu::pure]] uint32_t adjust_color(uint32_t rgb, uint32_t hueShift, uint32_t lighten, uint32_t brighten);
[[gnu::hot, gnu::pure]] uint32_t ColorFromPaletteWLED(const CRGBPalette16 &pal, unsigned index, uint8_t brightness = (uint8_t)255U, TBlendType blendType = LINEARBLEND);
CRGBPalette16 generateHarmonicRandomPalette(const CRGBPalette16 &basepalette);
@@ -139,7 +140,13 @@ uint32_t colorBalanceFromKelvin(uint16_t kelvin, uint32_t rgb);
uint16_t approximateKelvinFromRGB(uint32_t rgb);
void setRandomColor(byte* rgb);
[[gnu::hot, gnu::pure]] uint32_t color_fade(uint32_t c1, uint8_t amount, bool video = false);
// fast scaling function for colors, performs color*scale/256 for all four channels, speed over accuracy
// note: inlining uses less code than actual function calls
static inline uint32_t fast_color_scale(const uint32_t c, const uint8_t scale) {
uint32_t rb = (((c & 0x00FF00FF) * scale) >> 8) & 0x00FF00FF;
uint32_t wg = (((c>>8) & 0x00FF00FF) * scale) & ~0x00FF00FF;
return rb | wg;
}
// palettes
extern const TProgmemRGBPalette16* const fastledPalettes[];