Thread: problem with loading HDR image using pbrt

Hi everyone
I'm trying to load an HDR image into my program using pbrt libaray( 3rdparty), I include the associated libraries in "Additional include directories" of my solution. I'm using visual studio 2010. here is my code to load the image:

[B]

Code:

bool loadTexture(const char *path)
{
Imf::Rgba * pixelBuffer;
GLuint width;
GLuint height;
try
{
Imf::RgbaInputFile in(path);

Imath::Box2i win = in.dataWindow();
width = win.max.x - win.min.x+1;
height = win.max.y - win.min.y+1;
Imath::V2i dim(win.max.x - win.min.x + 1,
win.max.y - win.min.y + 1);

pixelBuffer = new Imf::Rgba[dim.x * dim.y];


int dx = win.min.x;
int dy = win.min.y;

int order = in.lineOrder();

in.setFrameBuffer(pixelBuffer - dx - (dy * dim.x), 1, dim.x);
in.readPixels(win.min.y, win.max.y);
}
catch(Iex::BaseExc & e)
{
std::cerr << e.what() << std::endl;

delete[]pixelBuffer;
return false;
}
//GLuint texture;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D /*GL_TEXTURE_RECTANGLE*/, texture);

glTexParameteri(GL_TEXTURE_2D , GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D , GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D , GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D , GL_TEXTURE_WRAP_T, GL_CLAMP);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

glTexImage2D(GL_TEXTURE_2D , 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_HALF_FLOAT, pixelBuffer);

delete[]pixelBuffer;
return true;


}

I got this linking errors:
error LNK1120:7 unresoved externals
error LNK2019:unresoved external symbol "int_cdecl Imf::globalTreadCount(void)(?globalTreadCount@Imf@ @yahXZ)refrenced in function "bool_cdeclloadTexture(char const*)"(?loadTexture@@YA_NPBD@Z)
And 4 more linker errors like this.

Thanks in advance!

> I include the associated libraries in "Additional include directories" of my solution.
That only tells the compiler where to find include files.

There is an equivalent "Additional library directories" as well for the linker.
Here, you specify where to look, and the name(s) of the libraries you want to link with.

Look at the Command Line for the linker options to confirm that it is pointing at the right directory.

How did you compile the external library? You also need the OpenEXR library.

Edit: Also, it looks it requires Cygwin.

Jim