Public bug reported:
Writing an EXR file through Freeimage (3.17.0+ds1-2) on Xubuntu 16.04
results in a file with zero bytes, while a corresponding HDR file is
written correctly. On 14.04 both images are written correctly. Here is a
minimal example writing both formats and reproducing the problem:
// compile with g++ -lfreeimage test.cpp
#include <FreeImage.h>
#include <iostream>
struct Rgb
{
float r, g, b;
Rgb() {}
Rgb(float x, float y, float z): r(x), g(y), b(z) {}
};
int main()
{
const int n = 512;
Rgb img[n * n];
for (int i = 0; i < n; i++)
for (int j = 0; j < n; j++)
img[i*n + j] = Rgb((float) i / n, (float) j / n, 0.0f);
FIBITMAP* pBitmap;
pBitmap = FreeImage_AllocateT(FIT_RGBF, n, n);
unsigned int nPitch = FreeImage_GetPitch(pBitmap);
BYTE *pBits = reinterpret_cast<BYTE*>(FreeImage_GetBits(pBitmap));
float *buf = reinterpret_cast<float*>(img);
unsigned int i = 0;
for (int y = 0; y < n; ++y)
{
float *pPixel = reinterpret_cast<float*>(pBits);
for (int x = 0; x < n; ++x)
{
pPixel[0] = buf[i++];
pPixel[1] = buf[i++];
pPixel[2] = buf[i++];
pPixel += 3;
}
pBits += nPitch;
}
if (!FreeImage_Save(FIF_EXR, pBitmap, "test.exr", EXR_DEFAULT))
std::cout << "EXR error\n";
if (!FreeImage_Save(FIF_HDR, pBitmap, "test.hdr")) std::cout << "HDR
error\n";
FreeImage_Unload(pBitmap);
return 0;
}
** Affects: freeimage (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1614266
Title:
Freeimage library does not write EXR files
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