Differential D16042 Diff 58215 source/blender/gpu/opengl/gl_state.cc

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	/** \name Memory barrier			/** \name Memory barrier
	* \{ */			* \{ */

	void GLStateManager::issue_barrier(eGPUBarrier barrier_bits)			void GLStateManager::issue_barrier(eGPUBarrier barrier_bits)
	{			{
	glMemoryBarrier(to_gl(barrier_bits));			glMemoryBarrier(to_gl(barrier_bits));
	}			}

				GLFence::~GLFence()
				{
				if (gl_sync_ != 0) {
				glDeleteSync(gl_sync_);
				gl_sync_ = 0;
				}
				}

				void GLFence::signal()
				{
				/* If fence is already signalled, create a newly signalled fence primitive. */
				if (gl_sync_) {
				glDeleteSync(gl_sync_);
				}

				gl_sync_ = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
				signalled_ = true;
				}

				void GLFence::wait()
				{
				/* Do not wait if fence does not yet exist. */
				if (gl_sync_ == 0) {
				return;
				}
				glWaitSync(gl_sync_, 0, GL_TIMEOUT_IGNORED);
				signalled_ = false;
				}
	/** \} */			/** \} */

	} // namespace blender::gpu			} // namespace blender::gpu