def __Invalidate(self, checkComplete: bool):
if self._id:
self.Delete(False)
self._id = GLHelper.CreateFramebuffer()
for idx, attachmentSpec in enumerate(self.colorAttachmentSpecs):
texture = self.__CreateFramebufferAttachment(attachmentSpec)
self.__AttachFramebufferTexture(texture, idx, False)
self.colorAttachments.append(texture)
if self.depthAttachmentSpec.textureFormat:
texture = self.__CreateFramebufferAttachment(self.depthAttachmentSpec)
self.__AttachFramebufferTexture(texture, 0, True)
self.depthAttachment = texture
if len(self.colorAttachments) > 1:
if len(self.colorAttachments) > 4:
raise GraphicsException("Cannot use more than 4 framebuffer texture attachments.")
drawBuffers = [GL.GL_COLOR_ATTACHMENT0, GL.GL_COLOR_ATTACHMENT1, GL.GL_COLOR_ATTACHMENT2, GL.GL_COLOR_ATTACHMENT3]
GL.glNamedFramebufferDrawBuffers(self._id, len(self.colorAttachments), drawBuffers)
elif len(self.colorAttachments) == 0:
GL.glNamedFramebufferDrawBuffer(self._id, GL.GL_NONE)
else: #means we have only one color attachment
GL.glNamedFramebufferDrawBuffer(self._id, GL.GL_COLOR_ATTACHMENT0) #assume we use 0th index for our attachment
if checkComplete:
status = GL.glCheckNamedFramebufferStatus(self._id, GL.GL_FRAMEBUFFER)
if status != GL.GL_FRAMEBUFFER_COMPLETE:
raise GraphicsException(f"Framebuffer incomplete: {_GL_FB_ERROR_CODE_NAMES_MAP[status]}.")
