/* BILINEAR INTERPOLATION */
void bilinear_interpolation_color(struct ImBuf *in, unsigned char outI[4], float outF[4], float u, float v)
{
if (outF) {
BLI_bilinear_interpolation_fl(in->rect_float, outF, in->x, in->y, 4, u, v);
}
else {
BLI_bilinear_interpolation_char((unsigned char *) in->rect, outI, in->x, in->y, 4, u, v);
}
}
void RenderLayersProg::doInterpolation(float output[4], float x, float y, PixelSampler sampler)
{
unsigned int offset;
int width = this->getWidth(), height = this->getHeight();
int ix = x, iy = y;
if (ix < 0 || iy < 0 || ix >= width || iy >= height) {
if (this->m_elementsize == 1) {
output[0] = 0.0f;
}
else if (this->m_elementsize == 3) {
zero_v3(output);
}
else {
zero_v4(output);
}
return;
}
switch (sampler) {
case COM_PS_NEAREST: {
offset = (iy * width + ix) * this->m_elementsize;
if (this->m_elementsize == 1) {
output[0] = this->m_inputBuffer[offset];
}
else if (this->m_elementsize == 3) {
copy_v3_v3(output, &this->m_inputBuffer[offset]);
}
else {
copy_v4_v4(output, &this->m_inputBuffer[offset]);
}
break;
}
case COM_PS_BILINEAR:
BLI_bilinear_interpolation_fl(
this->m_inputBuffer, output, width, height, this->m_elementsize, x, y);
break;
case COM_PS_BICUBIC:
BLI_bicubic_interpolation_fl(
this->m_inputBuffer, output, width, height, this->m_elementsize, x, y);
break;
}
}
void RenderLayersBaseProg::doInterpolation(float output[4], float x, float y, PixelSampler sampler)
{
unsigned int offset;
int ix, iy;
int width = this->getWidth(), height = this->getHeight();
switch (sampler) {
case COM_PS_NEAREST:
ix = x;
iy = y;
offset = (iy * width + ix) * this->m_elementsize;
if (this->m_elementsize == 1)
output[0] = this->m_inputBuffer[offset];
else if (this->m_elementsize == 3)
copy_v3_v3(output, &this->m_inputBuffer[offset]);
else
copy_v4_v4(output, &this->m_inputBuffer[offset]);
break;
case COM_PS_BILINEAR:
BLI_bilinear_interpolation_fl(this->m_inputBuffer, output, width, height, this->m_elementsize, x, y);
break;
case COM_PS_BICUBIC:
BLI_bicubic_interpolation_fl(this->m_inputBuffer, output, width, height, this->m_elementsize, x, y);
break;
}
if (this->m_elementsize == 1) {
output[1] = 0.0f;
output[2] = 0.0f;
output[3] = 0.0f;
}
else if (this->m_elementsize == 3) {
output[3] = 1.0f;
}
}