bool Texture::Create(unsigned int width, unsigned int height)
{
// Check if texture parameters are valid before creating it
if (!width || !height)
{
Err() << "Failed to create texture, invalid size (" << width << "x" << height << ")" << std::endl;
return false;
}
// Compute the internal texture dimensions depending on NPOT textures support
unsigned int textureWidth = GetValidSize(width);
unsigned int textureHeight = GetValidSize(height);
// Check the maximum texture size
unsigned int maxSize = GetMaximumSize();
if ((textureWidth > maxSize) || (textureHeight > maxSize))
{
Err() << "Failed to create texture, its internal size is too high "
<< "(" << textureWidth << "x" << textureHeight << ", "
<< "maximum is " << maxSize << "x" << maxSize << ")"
<< std::endl;
return false;
}
// All the validity checks passed, we can store the new texture settings
myWidth = width;
myHeight = height;
myTextureWidth = textureWidth;
myTextureHeight = textureHeight;
myPixelsFlipped = false;
EnsureGlContext();
// Create the OpenGL texture if it doesn't exist yet
if (!myTexture)
{
GLuint texture;
GLCheck(glGenTextures(1, &texture));
myTexture = static_cast<unsigned int>(texture);
}
// Make sure that the current texture binding will be preserved
priv::TextureSaver save;
// Initialize the texture
GLCheck(glBindTexture(GL_TEXTURE_2D, myTexture));
GLCheck(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, myTextureWidth, myTextureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL));
GLCheck(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, myIsRepeated ? GL_REPEAT : GL_CLAMP_TO_EDGE));
GLCheck(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, myIsRepeated ? GL_REPEAT : GL_CLAMP_TO_EDGE));
GLCheck(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, myIsSmooth ? GL_LINEAR : GL_NEAREST));
GLCheck(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, myIsSmooth ? GL_LINEAR : GL_NEAREST));
myCacheId = GetUniqueId();
return true;
}
template<class TA> void DynObjArray_cl<TA>::AdjustSize()
{
Resize(GetValidSize());
}
