C++ (Cpp) FSlateDrawBuffer::ClearBuffer示例

示例#1

文件： Slate3DRenderer.cpp 项目： zhaoyizheng0930/UnrealEngine

FSlateDrawBuffer& FSlate3DRenderer::GetDrawBuffer()
{
	FreeBufferIndex = (FreeBufferIndex + 1) % NUM_DRAW_BUFFERS;
	FSlateDrawBuffer* Buffer = &DrawBuffers[FreeBufferIndex];

	while (!Buffer->Lock())
	{
		FlushRenderingCommands();

		UE_LOG(LogSlate, Log, TEXT("Slate: Had to block on waiting for a draw buffer"));
		FreeBufferIndex = (FreeBufferIndex + 1) % NumDrawBuffers;

		Buffer = &DrawBuffers[FreeBufferIndex];
	}

	Buffer->ClearBuffer();

	return *Buffer;
}