void TextureResource::load(bool reload) {
if(textureid != 0) {
if(!reload) return;
debugLog("texture %d is being reloaded", textureid);
}
SDL_Surface *surface = 0;
if(!filename.empty()) {
debugLog("creating texture from %s", filename.c_str());
surface = IMG_Load(filename.c_str());
if(surface==0) throw TextureException(filename);
w = surface->w;
h = surface->h;
//figure out image colour order
format = colourFormat(surface);
data = (GLubyte*) surface->pixels;
if(format==0) throw TextureException(filename);
}
createTexture();
if(surface != 0) {
SDL_FreeSurface(surface);
data = 0;
}
}
Texture::Texture(const std::string& filename)
{
std::string path = "res\\textures\\" + filename;
int w;
int h;
int comp;
unsigned char* image = stbi_load(path.c_str(), &w, &h, &comp, STBI_rgb_alpha);
if(!image)
{
throw TextureException("Failed to load texture: " + path);
}
glGenTextures(1, &m_texture);
glBindTexture(GL_TEXTURE_2D, m_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image);
glBindTexture(GL_TEXTURE_2D, 0);
stbi_image_free(image);
}