/** Creates a Procedural based texture
*
* @param x The width of the texture
* @param y The height of the texture
* @param numcomp The number of components in each pixel (3 = RGB, 4 = RGBA, etc)
* @param proc The procedure which will create the texture
*
* @returns An ITexture object or NULL if the texture failed to create
*
* Operation:
* -# Test how many textures exist, if zero, enable GL_TEXTURE_COORD_ARRAY
* -# Create a new Procedural texture
* -# Update the texture (this will load the image contents into the opengl texture object)
* -# Store the texture pointer
* -# Return the texture pointer
*/
ITexture * OGLGraphics::CreateTexture(int x, int y, int numcomp, ITexture::textureproc_t proc)
{
if(Textures.size() == 0) glEnableClientState(GL_TEXTURE_COORD_ARRAY);
ITexture *texture = new OGLProceduralTexture(x,y,numcomp,proc);
if(texture->UpdateTexture() >= 0){
Textures.push_back(texture);
}else{
delete texture;
texture = NULL;
}
return texture;
}
/** Creates an Image based Texture
*
* @param image The filename containing the image to use as a texture
*
* @returns An ITexture object or NULL if texture failed to create
*
* Operation:
* -# If the number of textures is zero, enable GL_TEXTURE_COORD_ARRAY
* -# Loop through the current existing textures and attempt to find
* a copy of the texture you are attempting to load
* -# If a copy is found, return an ITexture pointer to that texture
* -# If the texture is not found, Create a new ImageTexture object
* -# Update the texture (this will load the image contents into the opengl texture object)
* -# Store the texture pointer
* -# Return the texture pointer
*/
ITexture * OGLGraphics::CreateTexture(std::string image)
{
ITexture *texture = NULL;
for(unsigned int a=0;a<Textures.size();a++){
std::string test = Textures[a]->m_filename;
if(image == test) texture = Textures[a];
}
if(texture == NULL){
texture = new OGLImageTexture(image);
if(texture->UpdateTexture() >= 0){
Textures.push_back(texture);
}else{
delete texture;
texture = NULL;
}
}
return texture;
}