wonderbrush/support/blending.h

39 			uint8* d1, uint8* d2, uint8* d3, uint8* da)	// dest components
63 	  uint8* d1, uint8* d2, uint8* d3, uint8* da)	// dest components
88 blend_colors_copy(uint8* bottom, uint8 alpha, uint8* dest,
94 			dest[0] = c1;
95 			dest[1] = c2;
96 			dest[2] = c3;
97 			dest[3] = alpha;
106 						&dest[0], &dest[1], &dest[2], &dest[3]);
109 		*((uint32*)dest) = *((uint32*)bottom);
140 blend_colors_copy(uint8* bottom, uint8 alpha, uint8* dest,
145 			dest[0] = c1;
146 			dest[1] = c2;
147 			dest[2] = c3;
148 			dest[3] = alpha;
152 				  &dest[0], &dest[1], &dest[2], &dest[3]);
155 		*((uint32*)dest) = *((uint32*)bottom);
216 blend_colors_copy(uint8* dest, uint8* bottom, uint8* top)
219 		dest[0] = top[0];
220 		dest[1] = top[1];
221 		dest[2] = top[2];
222 		dest[3] = top[3];
226 				  &dest[0], &dest[1], &dest[2], &dest[3]);
261 blend_pixels_copy(uint8* bottom, uint8* top, uint8* dest, uint8 alpha)
265 			dest[0] = top[0];
266 			dest[1] = top[1];
267 			dest[2] = top[2];
268 			dest[3] = top[3];
280 			dest[0] = kInverseGammaTable[(b1 * invAlpha + t1 * mergeAlpha) / 255];
281 			dest[1] = kInverseGammaTable[(b2 * invAlpha + t2 * mergeAlpha) / 255];
282 			dest[2] = kInverseGammaTable[(b3 * invAlpha + t3 * mergeAlpha) / 255];
283 			dest[3] = (bottom[3] * (255 - alpha) + top[3] * alpha) / 255;
286 		dest[0] = bottom[0];
287 		dest[1] = bottom[1];
288 		dest[2] = bottom[2];
289 		dest[3] = bottom[3];
325 blend_pixels_overlay_copy(uint8* bottom, uint8* top, uint8* dest, uint8 alphaOverride)
330 			dest[0] = top[0];
331 			dest[1] = top[1];
332 			dest[2] = top[2];
333 			dest[3] = top[3];
345 			dest[0] = kInverseGammaTable[(b1 * invAlpha + t1 * mergeAlpha) / 255];
346 			dest[1] = kInverseGammaTable[(b2 * invAlpha + t2 * mergeAlpha) / 255];
347 			dest[2] = kInverseGammaTable[(b3 * invAlpha + t3 * mergeAlpha) / 255];
348 			dest[3] = (bottom[3] * (255 - alpha) + top[3] * alpha) / 255;
351 		dest[0] = bottom[0];
352 		dest[1] = bottom[1];
353 		dest[2] = bottom[2];
354 		dest[3] = bottom[3];
363 blend_colors_copy(uint8* bottom, uint8 alpha, uint8* dest,
368 			dest[0] = c1;
369 			dest[1] = c2;
370 			dest[2] = c3;
371 			dest[3] = alpha;
375 				dest[0] = (uint8)((bottom[0] * destAlpha + c1 * alpha) / 255);
376 				dest[1] = (uint8)((bottom[1] * destAlpha + c2 * alpha) / 255);
377 				dest[2] = (uint8)((bottom[2] * destAlpha + c3 * alpha) / 255);
378 				dest[3] = 255;
384 				dest[0] = (bottom[0] * alphaDest + c1 * alphaSrc) / alphaTemp;
385 				dest[1] = (bottom[1] * alphaDest + c2 * alphaSrc) / alphaTemp;
386 				dest[2] = (bottom[2] * alphaDest + c3 * alphaSrc) / alphaTemp;
387 				dest[3] = alphaTemp / 255;
391 		*((uint32*)dest) = *((uint32*)bottom);
488 blend_colors_copy(uint8* dest, uint8* bottom, uint8* top)
491 		dest[0] = top[0];
492 		dest[1] = top[1];
493 		dest[2] = top[2];
494 		dest[3] = top[3];
498 			dest[0] = (uint8)((bottom[0] * destAlpha + top[0] * top[3]) / 255);
499 			dest[1] = (uint8)((bottom[1] * destAlpha + top[1] * top[3]) / 255);
500 			dest[2] = (uint8)((bottom[2] * destAlpha + top[2] * top[3]) / 255);
501 			dest[3] = 255;
507 			dest[0] = (bottom[0] * alphaDest + top[0] * alphaSrc) / alphaTemp;
508 			dest[1] = (bottom[1] * alphaDest + top[1] * alphaSrc) / alphaTemp;
509 			dest[2] = (bottom[2] * alphaDest + top[2] * alphaSrc) / alphaTemp;
510 			dest[3] = alphaTemp / 255;
538 blend_pixels_copy(uint8* bottom, uint8* top, uint8* dest, uint8 alpha)
542 			dest[0] = top[0];
543 			dest[1] = top[1];
544 			dest[2] = top[2];
545 			dest[3] = top[3];
549 			dest[0] = (bottom[0] * invAlpha + top[0] * mergeAlpha) / 255;
550 			dest[1] = (bottom[1] * invAlpha + top[1] * mergeAlpha) / 255;
551 			dest[2] = (bottom[2] * invAlpha + top[2] * mergeAlpha) / 255;
552 			dest[3] = (bottom[3] * (255 - alpha) + top[3] * alpha) / 255;
555 		dest[0] = bottom[0];
556 		dest[1] = bottom[1];
557 		dest[2] = bottom[2];
558 		dest[3] = bottom[3];
586 blend_pixels_overlay_copy(uint8* bottom, uint8* top, uint8* dest, uint8 alphaOverride)
591 			dest[0] = top[0];
592 			dest[1] = top[1];
593 			dest[2] = top[2];
594 			dest[3] = top[3];
598 			dest[0] = (bottom[0] * invAlpha + top[0] * mergeAlpha) / 255;
599 			dest[1] = (bottom[1] * invAlpha + top[1] * mergeAlpha) / 255;
600 			dest[2] = (bottom[2] * invAlpha + top[2] * mergeAlpha) / 255;
601 			dest[3] = (bottom[3] * (255 - alpha) + top[3] * alpha) / 255;
604 		dest[0] = bottom[0];
605 		dest[1] = bottom[1];
606 		dest[2] = bottom[2];
607 		dest[3] = bottom[3];