Witam,
próbuję nałożyć na czworokąt w OpenGL teksturę. Znalazłem ten poradnik:
http://r3dux.org/2010/11/single-call-op … -in-devil/
Natomast jest problem, gdyż gdy wstawiam tą podaną funkcję
// Function load a image, turn it into a texture, and return the texture ID as a GLuint for use
GLuint loadImage(const char* theFileName)
{
ILuint imageID; // Create an image ID as a ULuint
GLuint textureID; // Create a texture ID as a GLuint
ILboolean success; // Create a flag to keep track of success/failure
ILenum error; // Create a flag to keep track of the IL error state
ilGenImages(1, &imageID); // Generate the image ID
ilBindImage(imageID); // Bind the image
success = ilLoadImage(theFileName); // Load the image file
// If we managed to load the image, then we can start to do things with it...
if (success)
{
// If the image is flipped (i.e. upside-down and mirrored, flip it the right way up!)
ILinfo ImageInfo;
iluGetImageInfo(&ImageInfo);
if (ImageInfo.Origin == IL_ORIGIN_UPPER_LEFT)
{
iluFlipImage();
}
// Convert the image into a suitable format to work with
// NOTE: If your image contains alpha channel you can replace IL_RGB with IL_RGBA
success = ilConvertImage(IL_RGB, IL_UNSIGNED_BYTE);
// Quit out if we failed the conversion
if (!success)
{
error = ilGetError();
std::cout << "Image conversion failed - IL reports error: " << error << " - " << iluErrorString(error) << std::endl;
exit(-1);
}
// Generate a new texture
glGenTextures(1, &textureID);
// Bind the texture to a name
glBindTexture(GL_TEXTURE_2D, textureID);
// Set texture clamping method
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
// Set texture interpolation method to use linear interpolation (no MIPMAPS)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// Specify the texture specification
glTexImage2D(GL_TEXTURE_2D, // Type of texture
0, // Pyramid level (for mip-mapping) - 0 is the top level
ilGetInteger(IL_IMAGE_BPP), // Image colour depth
ilGetInteger(IL_IMAGE_WIDTH), // Image width
ilGetInteger(IL_IMAGE_HEIGHT), // Image height
0, // Border width in pixels (can either be 1 or 0)
ilGetInteger(IL_IMAGE_FORMAT), // Image format (i.e. RGB, RGBA, BGR etc.)
GL_UNSIGNED_BYTE, // Image data type
ilGetData()); // The actual image data itself
}
else // If we failed to open the image file in the first place...
{
error = ilGetError();
std::cout << "Image load failed - IL reports error: " << error << " - " << iluErrorString(error) << std::endl;
exit(-1);
}
ilDeleteImages(1, &imageID); // Because we have already copied image data into texture data we can release memory used by image.
std::cout << "Texture creation successful." << std::endl;
return textureID; // Return the GLuint to the texture so you can use it!
}
(nie wykonuję jej nawet) to wyświetlają się błędy:
I teraz pytanie: dlaczego są te błędy? Co jest nie tak?
A jest jakaś zielona “paćka”.