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Fix T51529: Black boxes on a denoising render when using a .exr image as a environmental texture

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It is caused by NaN value in the input texture. Now we check for all the pixels
having proper finite values.

Should also help here in the studio,
This commit is contained in:
Sergey Sharybin 2017-05-17 15:29:47 +02:00
parent cc2755b443
commit 1d49205b1a
1 changed files with 31 additions and 0 deletions
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31
intern/cycles/render/image.cpp
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@ -639,6 +639,37 @@ bool ImageManager::file_load_image(Image *img,
}
}
}
/* Make sure we don't have buggy values. */
if(FileFormat == TypeDesc::FLOAT) {
/* For RGBA buffers we put all channels to 0 if either of them is not
* finite. This way we avoid possible artifacts caused by fully changed
* hue.
*/
if(is_rgba) {
for(size_t i = 0; i < num_pixels; i += 4) {
StorageType *pixel = &pixels[i*4];
if(!isfinite(pixel[0]) ||
!isfinite(pixel[1]) ||
!isfinite(pixel[2]) ||
!isfinite(pixel[3]))
{
pixel[0] = 0;
pixel[1] = 0;
pixel[2] = 0;
pixel[3] = 0;
}
}
}
else {
for(size_t i = 0; i < num_pixels; ++i) {
StorageType *pixel = &pixels[i*4];
if(!isfinite(pixel[0])) {
pixel[0] = 0;
}
}
}
}
/* Scale image down if needed. */
if(pixels_storage.size() > 0) {
float scale_factor = 1.0f;
while(max_size * scale_factor > texture_limit) {