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optimization for AA setPixelColorXY()

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This commit is contained in:
Frank
2023-04-30 19:09:38 +02:00
parent 40c96c14f5
commit f69142d5be
2 changed files with 15 additions and 8 deletions
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2
wled00/FX.h
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@@ -598,7 +598,7 @@ typedef struct Segment {
void setPixelColorXY(int x, int y, uint32_t c); // set relative pixel within segment with color
void setPixelColorXY(int x, int y, byte r, byte g, byte b, byte w = 0) { setPixelColorXY(x, y, RGBW32(r,g,b,w)); } // automatically inline
void setPixelColorXY(int x, int y, CRGB c) { setPixelColorXY(x, y, RGBW32(c.r,c.g,c.b,0)); } // automatically inline
void setPixelColorXY(float x, float y, uint32_t c, bool aa = true);
void setPixelColorXY(float x, float y, uint32_t c, bool aa = true, bool fast = true);
void setPixelColorXY(float x, float y, byte r, byte g, byte b, byte w = 0, bool aa = true) { setPixelColorXY(x, y, RGBW32(r,g,b,w), aa); }
void setPixelColorXY(float x, float y, CRGB c, bool aa = true) { setPixelColorXY(x, y, RGBW32(c.r,c.g,c.b,0), aa); }
uint32_t getPixelColorXY(uint16_t x, uint16_t y);

21
wled00/FX_2Dfcn.cpp
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@@ -242,13 +242,13 @@ void IRAM_ATTR_YN Segment::setPixelColorXY(int x, int y, uint32_t col) //WLEDMM:
}
// anti-aliased version of setPixelColorXY()
void Segment::setPixelColorXY(float x, float y, uint32_t col, bool aa)
void Segment::setPixelColorXY(float x, float y, uint32_t col, bool aa, bool fast) // WLEDMM some speedups due to fast int and faster sqrt16
{
if (Segment::maxHeight==1) return; // not a matrix set-up
if (x<0.0f || x>1.0f || y<0.0f || y>1.0f) return; // not normalized
const uint16_t cols = virtualWidth();
const uint16_t rows = virtualHeight();
const uint_fast16_t cols = virtualWidth();
const uint_fast16_t rows = virtualHeight();
float fX = x * (cols-1);
float fY = y * (rows-1);
@@ -267,10 +267,17 @@ void Segment::setPixelColorXY(float x, float y, uint32_t col, bool aa)
uint32_t cXRYB = getPixelColorXY(xR, yB);
if (xL!=xR && yT!=yB) {
setPixelColorXY(xL, yT, color_blend(col, cXLYT, uint8_t(sqrtf(dL*dT)*255.0f))); // blend TL pixel
setPixelColorXY(xR, yT, color_blend(col, cXRYT, uint8_t(sqrtf(dR*dT)*255.0f))); // blend TR pixel
setPixelColorXY(xL, yB, color_blend(col, cXLYB, uint8_t(sqrtf(dL*dB)*255.0f))); // blend BL pixel
setPixelColorXY(xR, yB, color_blend(col, cXRYB, uint8_t(sqrtf(dR*dB)*255.0f))); // blend BR pixel
if (!fast) {
setPixelColorXY(xL, yT, color_blend(col, cXLYT, uint8_t(sqrtf(dL*dT)*255.0f))); // blend TL pixel
setPixelColorXY(xR, yT, color_blend(col, cXRYT, uint8_t(sqrtf(dR*dT)*255.0f))); // blend TR pixel
setPixelColorXY(xL, yB, color_blend(col, cXLYB, uint8_t(sqrtf(dL*dB)*255.0f))); // blend BL pixel
setPixelColorXY(xR, yB, color_blend(col, cXRYB, uint8_t(sqrtf(dR*dB)*255.0f))); // blend BR pixel
} else {
setPixelColorXY(xL, yT, color_blend(col, cXLYT, uint8_t(sqrt16(dL*dT*65025.0f)))); // blend TL pixel // WLEDMM: use faster sqrt16 for integer; perform multiplication by 255^2 before sqrt
setPixelColorXY(xR, yT, color_blend(col, cXRYT, uint8_t(sqrt16(dR*dT*65025.0f)))); // blend TR pixel // this is possible because sqrt(a) * sqrt(b) = sqrt(a * b)
setPixelColorXY(xL, yB, color_blend(col, cXLYB, uint8_t(sqrt16(dL*dB*65025.0f)))); // blend BL pixel
setPixelColorXY(xR, yB, color_blend(col, cXRYB, uint8_t(sqrt16(dR*dB*65025.0f)))); // blend BR pixel
}
} else if (xR!=xL && yT==yB) {
setPixelColorXY(xR, yT, color_blend(col, cXLYT, uint8_t(dL*255.0f))); // blend L pixel
setPixelColorXY(xR, yT, color_blend(col, cXRYT, uint8_t(dR*255.0f))); // blend R pixel