Method OnDrawFrame

examples/Cpp/HelloGame/HelloGame.cpp:2046–2116

    }

    void OnDrawFrame() override
    {
        // Update scene by user input
        timer.MeasureTime();
        UpdateScene(static_cast<float>(timer.GetDeltaTime()));

        commands->Begin();
        {
            // Bind common input assembly
            commands->SetVertexBuffer(*vertexBuffer);

            instanceBuffer.Update(*commands, 0, &player.instance, sizeof(player.instance));

            // Update mesh instances in dirty range
            if (currentLevel != nullptr)
            {
                const std::uint32_t numInstancesToUpdate = currentLevel->meshInstanceDirtyRange.Count();
                if (numInstancesToUpdate > 0)
                {
                    // Update mesh instance buffer
                    const std::uint32_t firstInstanceToUpdate = (1 + nextLevelInstanceOffset + currentLevel->meshInstanceDirtyRange.begin);

                    instanceBuffer.Update(
                        *commands,
                        sizeof(Instance) * firstInstanceToUpdate,
                        &(currentLevel->meshInstances[currentLevel->meshInstanceDirtyRange.begin]),
                        static_cast<std::uint16_t>(sizeof(Instance) * numInstancesToUpdate)
                    );

                    // Reset dirty range
                    currentLevel->meshInstanceDirtyRange.Invalidate();
                }
            }

            // Render shadow-map
            SetShadowMapView();
            commands->UpdateBuffer(*cbufferScene, 0, &scene, sizeof(scene));

            commands->BeginRenderPass(*shadowMapTarget);
            {
                // Clear depth buffer only, we will render the entire framebuffer
                commands->Clear(LLGL::ClearFlags::Depth);
                commands->SetViewport(shadowMapTarget->GetResolution());
                commands->PushDebugGroup("RenderShadowMap");
                {
                    RenderScene(true);
                }
                commands->PopDebugGroup();
            }
            commands->EndRenderPass();

            // Render everything directly into the swap-chain
            SetCameraView();
            commands->UpdateBuffer(*cbufferScene, 0, &scene, sizeof(scene));

            commands->BeginRenderPass(*swapChain);
            {
                // Clear depth buffer only, we will render the entire framebuffer