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# Copyright (c) 2022 Ultimaker B.V.
# Uranium is released under the terms of the LGPLv3 or higher.
from PyQt6.QtGui import QImage
from PyQt6.QtOpenGL import QOpenGLTexture, QAbstractOpenGLFunctions
class Texture:
"""A class describing the interface to be used for texture objects.
This interface should be implemented by OpenGL implementations to handle texture
objects.
"""
def __init__(self, open_gl_binding_object: QAbstractOpenGLFunctions) -> None:
super().__init__()
self._qt_texture = QOpenGLTexture(QOpenGLTexture.Target.Target2D)
self._gl = open_gl_binding_object
self._file_name = None
self._image = None
def getTextureId(self) -> int:
"""Get the OpenGL ID of the texture."""
return self._qt_texture.textureId()
def bind(self, texture_unit):
"""Bind the texture to a certain texture unit.
:param texture_unit: The texture unit to bind to.
"""
if not self._qt_texture.isCreated():
if self._file_name != None:
self._image = QImage(self._file_name).mirrored()
elif self._image is None: # No filename or image set.
self._image = QImage(1, 1, QImage.Format.Format_ARGB32)
self._image.fill(0)
self._qt_texture.setData(self._image)
self._qt_texture.setMinMagFilters(QOpenGLTexture.Filter.Linear, QOpenGLTexture.Filter.Linear)
self._qt_texture.bind(texture_unit)
def release(self, texture_unit):
"""Release the texture from a certain texture unit.
:param texture_unit: The texture unit to release from.
"""
self._qt_texture.release(texture_unit)
def load(self, file_name):
"""Load an image and upload it to the texture.
:param file_name: The file name of the image to load.
"""
self._file_name = file_name
# Actually loading the texture is postponed until the next bind() call.
# This makes sure we are on the right thread and have a current context when trying to upload.
def setImage(self, image):
self._image = image
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