class AtlasTexture(Texture):
def __init__(self, texture, width, height):
Texture.__init__(self, texture, width, height)
self.allocator = Allocator()
@classmethod
def empty(cls, width, height):
atlas = cls(glGenTextures(1), width, height)
atlas.clear()
return atlas
def add(self, image):
item = self.allocator.add(image.width, image.height)
item.image = image
return item
def clear(self):
self.bind()
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, self.width, self.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, None)
self.unbind()
def reset(self):
self.allocator.reset()
def upload(self):
self.allocator.allocate(self.width, self.height)
self.bind()
for item in self.allocator.items:
image = item.image
glTexSubImage2D(GL_TEXTURE_2D, 0, item.x, item.y, item.width, item.height, GL_RGBA, GL_UNSIGNED_BYTE, image.data)
self.unbind()
def __init__(self, texture, width, height):
Texture.__init__(self, texture, width, height)
self.allocator = Allocator()