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View Full Version : OpenGL + DevIL + EXR Format



xyzwrgba
02-10-2012, 06:02 PM
I get really strange color output when I use tonemap with EXR files, its like perfect for most of the image but some places of the image end up having large yellow or red spots.



ILuint iid;
ilGenImages(1, &iid);
ilBindImage(iid);

auto conv = s2w(_filename);
if(!ilLoadImage(conv.c_str()))
{
std::stringstream wss; wss << L"Failed to load texture: " << _filename << L" Error#" << ilGetError();
auto err = wss.str();
LOG(WARNING) << err;
return false;
}

iluImageParameter(ILU_FILTER, ILU_BILINEAR);

//Effects
/*iluAlienify();
iluBlurAvg(10);
iluBlurGaussian(10);
iluContrast(1.7f);
iluEqualize();
iluGammaCorrect(0.7f);
iluNegative();
iluNoisify(0.8f);
iluPixelize(20);
iluSharpen(2.1f, 3.0f);
iluSharpen(1.5f, 1.5f);*/

data.width = ilGetInteger(IL_IMAGE_WIDTH);
data.height = ilGetInteger(IL_IMAGE_HEIGHT);

unsigned int size;
if(HDR)size = data.width * data.height * 16;
else size = data.width * data.height * 4;

data.data = new unsigned char[size];
ilCopyPixels(0, 0, 0, data.width, data.height, 1, IL_RGBA, HDR ? IL_FLOAT : IL_UNSIGNED_BYTE, data.data);
ilDeleteImage(iid);

glGenTextures(1, &amp;id);
glBindTexture(GL_TEXTURE_2D, id);

glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);

if(strstr((char*)glGetString(GL_EXTENSIONS), "GL_EXT_texture_filter_anisotropic"))
{
float maximumaf = 0.0f;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &amp;maximumaf);
if(gOptions->af > maximumaf)gOptions->af = static_cast<int>(maximumaf);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, static_cast<float>(gOptions->af));
}

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);

iluImageParameter(ILU_FILTER, ILU_BILINEAR);

gluBuild2DMipmaps(GL_TEXTURE_2D, HDR ? GL_RGBA32F : GL_RGBA, data.width, data.height, GL_RGBA, HDR ? GL_FLOAT : GL_UNSIGNED_BYTE, data.data);

if(data.data)
{
delete[] data.data;
data.data = nullptr;
}


Can someone please tell me what could be wrong?