void IMB_blend_color_float(float dst[4], float src1[4], float src2[4], IMB_BlendMode mode)
{
switch (mode) {
case IMB_BLEND_MIX:
blend_color_mix_float(dst, src1, src2); break;
case IMB_BLEND_ADD:
blend_color_add_float(dst, src1, src2); break;
case IMB_BLEND_SUB:
blend_color_sub_float(dst, src1, src2); break;
case IMB_BLEND_MUL:
blend_color_mul_float(dst, src1, src2); break;
case IMB_BLEND_LIGHTEN:
blend_color_lighten_float(dst, src1, src2); break;
case IMB_BLEND_DARKEN:
blend_color_darken_float(dst, src1, src2); break;
case IMB_BLEND_ERASE_ALPHA:
blend_color_erase_alpha_float(dst, src1, src2); break;
case IMB_BLEND_ADD_ALPHA:
blend_color_add_alpha_float(dst, src1, src2); break;
default:
dst[0] = src1[0];
dst[1] = src1[1];
dst[2] = src1[2];
dst[3] = src1[3];
break;
}
}
void IMB_blend_color_float(float dst[4], float src1[4], float src2[4], IMB_BlendMode mode)
{
switch (mode) {
case IMB_BLEND_MIX:
blend_color_mix_float(dst, src1, src2); break;
case IMB_BLEND_ADD:
blend_color_add_float(dst, src1, src2); break;
case IMB_BLEND_SUB:
blend_color_sub_float(dst, src1, src2); break;
case IMB_BLEND_MUL:
blend_color_mul_float(dst, src1, src2); break;
case IMB_BLEND_LIGHTEN:
blend_color_lighten_float(dst, src1, src2); break;
case IMB_BLEND_DARKEN:
blend_color_darken_float(dst, src1, src2); break;
case IMB_BLEND_ERASE_ALPHA:
blend_color_erase_alpha_float(dst, src1, src2); break;
case IMB_BLEND_ADD_ALPHA:
blend_color_add_alpha_float(dst, src1, src2); break;
case IMB_BLEND_OVERLAY:
blend_color_overlay_float(dst, src1, src2); break;
case IMB_BLEND_HARDLIGHT:
blend_color_hardlight_float(dst, src1, src2); break;
case IMB_BLEND_COLORBURN:
blend_color_burn_float(dst, src1, src2); break;
case IMB_BLEND_LINEARBURN:
blend_color_linearburn_float(dst, src1, src2); break;
case IMB_BLEND_COLORDODGE:
blend_color_dodge_float(dst, src1, src2); break;
case IMB_BLEND_SCREEN:
blend_color_screen_float(dst, src1, src2); break;
case IMB_BLEND_SOFTLIGHT:
blend_color_softlight_float(dst, src1, src2); break;
case IMB_BLEND_PINLIGHT:
blend_color_pinlight_float(dst, src1, src2); break;
case IMB_BLEND_LINEARLIGHT:
blend_color_linearlight_float(dst, src1, src2); break;
case IMB_BLEND_VIVIDLIGHT:
blend_color_vividlight_float(dst, src1, src2); break;
case IMB_BLEND_DIFFERENCE:
blend_color_difference_float(dst, src1, src2); break;
case IMB_BLEND_EXCLUSION:
blend_color_exclusion_float(dst, src1, src2); break;
case IMB_BLEND_COLOR:
blend_color_color_float(dst, src1, src2); break;
case IMB_BLEND_HUE:
blend_color_hue_float(dst, src1, src2); break;
case IMB_BLEND_SATURATION:
blend_color_saturation_float(dst, src1, src2); break;
case IMB_BLEND_LUMINOSITY:
blend_color_luminosity_float(dst, src1, src2); break;
default:
dst[0] = src1[0];
dst[1] = src1[1];
dst[2] = src1[2];
dst[3] = src1[3];
break;
}
}
void IMB_blend_color_float(float *dst, float *src1, float *src2, float fac, IMB_BlendMode mode)
{
if (fac==0) {
dst[0]= src1[0];
dst[1]= src1[1];
dst[2]= src1[2];
dst[3]= src1[3];
return;
}
switch (mode) {
case IMB_BLEND_MIX:
blend_color_mix_float(dst, src1, src2, fac);
break;
case IMB_BLEND_ADD:
blend_color_add_float(dst, src1, src2, fac);
break;
case IMB_BLEND_SUB:
blend_color_sub_float(dst, src1, src2, fac);
break;
case IMB_BLEND_MUL:
blend_color_mul_float(dst, src1, src2, fac);
break;
case IMB_BLEND_LIGHTEN:
blend_color_lighten_float(dst, src1, src2, fac);
break;
case IMB_BLEND_DARKEN:
blend_color_darken_float(dst, src1, src2, fac);
break;
default:
dst[0]= src1[0];
dst[1]= src1[1];
dst[2]= src1[2];
}
if (mode == IMB_BLEND_ERASE_ALPHA) {
dst[3]= (src1[3] - fac*src2[3]);
if (dst[3] < 0.0f) dst[3] = 0.0f;
}
else { /* this does ADD_ALPHA also */
dst[3]= (src1[3] + fac*src2[3]);
if (dst[3] > 1.0f) dst[3] = 1.0f;
}
}
static void paint_2d_lift_soften(ImagePaintState *s, ImBuf *ibuf, ImBuf *ibufb, int *pos, const short tile)
{
bool sharpen = (s->painter->cache.invert ^ ((s->brush->flag & BRUSH_DIR_IN) != 0));
float threshold = s->brush->sharp_threshold;
int x, y, xi, yi, xo, yo, xk, yk;
float count;
int out_off[2], in_off[2], dim[2];
int diff_pos[2];
float outrgb[4];
float rgba[4];
BlurKernel *kernel = s->blurkernel;
dim[0] = ibufb->x;
dim[1] = ibufb->y;
in_off[0] = pos[0];
in_off[1] = pos[1];
out_off[0] = out_off[1] = 0;
if (!tile) {
IMB_rectclip(ibuf, ibufb, &in_off[0], &in_off[1], &out_off[0],
&out_off[1], &dim[0], &dim[1]);
if ((dim[0] == 0) || (dim[1] == 0))
return;
}
/* find offset inside mask buffers to sample them */
sub_v2_v2v2_int(diff_pos, out_off, in_off);
for (y = 0; y < dim[1]; y++) {
for (x = 0; x < dim[0]; x++) {
/* get input pixel */
xi = in_off[0] + x;
yi = in_off[1] + y;
count = 0.0;
if (tile) {
paint_2d_ibuf_tile_convert(ibuf, &xi, &yi, tile);
if (xi < ibuf->x && xi >= 0 && yi < ibuf->y && yi >= 0)
paint_2d_ibuf_rgb_get(ibuf, xi, yi, rgba);
else
zero_v4(rgba);
}
else {
/* coordinates have been clipped properly here, it should be safe to do this */
paint_2d_ibuf_rgb_get(ibuf, xi, yi, rgba);
}
zero_v4(outrgb);
for (yk = 0; yk < kernel->side; yk++) {
for (xk = 0; xk < kernel->side; xk++) {
count += paint_2d_ibuf_add_if(ibuf, xi + xk - kernel->pixel_len,
yi + yk - kernel->pixel_len, outrgb, tile,
kernel->wdata[xk + yk * kernel->side]);
}
}
if (count > 0.0f) {
mul_v4_fl(outrgb, 1.0f / (float)count);
if (sharpen) {
/* subtract blurred image from normal image gives high pass filter */
sub_v3_v3v3(outrgb, rgba, outrgb);
/* now rgba_ub contains the edge result, but this should be converted to luminance to avoid
* colored speckles appearing in final image, and also to check for threshold */
outrgb[0] = outrgb[1] = outrgb[2] = IMB_colormanagement_get_luminance(outrgb);
if (fabsf(outrgb[0]) > threshold) {
float mask = BKE_brush_alpha_get(s->scene, s->brush);
float alpha = rgba[3];
rgba[3] = outrgb[3] = mask;
/* add to enhance edges */
blend_color_add_float(outrgb, rgba, outrgb);
outrgb[3] = alpha;
}
else
copy_v4_v4(outrgb, rgba);
}
}
else
copy_v4_v4(outrgb, rgba);
/* write into brush buffer */
xo = out_off[0] + x;
yo = out_off[1] + y;
paint_2d_ibuf_rgb_set(ibufb, xo, yo, 0, outrgb);
}
}
}
