//public void DrawIndexed(int indexCount, uint instanceCount, uint indexStart, int vertexOffset, uint instanceStart)
//{
// Issue a Draw command for a single instance with 4 indices.
//veldridCommandList.DrawIndexed(Convert.ToUInt32(indexCount), instanceCount, indexStart, vertexOffset, instanceStart);
//}
#endregion
#region Internal API
/// <summary>
/// Initialises the GraphicsDevice
/// </summary>
/// <param name="graphicsAPI"></param>
internal void Initialise(VesselWindow window, ApplicationConfig config)
{
GraphicsAPI = config.GraphicsAPI;
GraphicsDeviceOptions options = new GraphicsDeviceOptions
{
PreferStandardClipSpaceYDirection = true,
PreferDepthRangeZeroToOne = true,
SyncToVerticalBlank = config.VSync,
Debug = config.DebugMode,
};
DefaultGraphicsAPI = (GraphicsAPI)VeldridStartup.GetPlatformDefaultBackend();
if (config.GraphicsAPI == GraphicsAPI.Default)
{
veldridGraphicsDevice = VeldridStartup.CreateGraphicsDevice(window.WindowInternal, options, (GraphicsBackend)DefaultGraphicsAPI);
}
else
{
veldridGraphicsDevice = VeldridStartup.CreateGraphicsDevice(window.WindowInternal, options, (GraphicsBackend)config.GraphicsAPI);
}
//Create the Graphics Resources
ResourceFactory factory = veldridGraphicsDevice.ResourceFactory;
//TODO: Replace with ResourceFactory.Load("ShaderTest0");
//shader = new ShaderTechnique(this,
//System.IO.File.ReadAllBytes(@"E:\Data\Projects\Vessel\VesselSharp\VesselSharp\ShaderTests\ShaderTest0.vert.spv"),
//System.IO.File.ReadAllBytes(@"E:\Data\Projects\Vessel\VesselSharp\VesselSharp\ShaderTests\ShaderTest0.frag.spv"),
//"ShaderTest0");
// TODO: Move pipeline to Shader class
// TODO: Shader => ShaderTechnique; ComputeShader
// TODO: Assets can be compiled (i.e. banks) or directories (i.e. folder of compiled assets (eg shader.shd), assets aren't packaged into an archive though) - for use during dev cuz packaging archives will probably be time consuming as f**k and decimate workflows
// Create pipeline
/*
* pipelineDescription = new GraphicsPipelineDescription();
* pipelineDescription.BlendState = BlendStateDescription.SingleOverrideBlend;
* pipelineDescription.DepthStencilState = new DepthStencilStateDescription(
* depthTestEnabled: true,
* depthWriteEnabled: true,
* comparisonKind: ComparisonKind.LessEqual);
*
* pipelineDescription.RasterizerState = new RasterizerStateDescription(
* cullMode: FaceCullMode.Back,
* fillMode: PolygonFillMode.Solid,
* frontFace: FrontFace.Clockwise,
* depthClipEnabled: true,
* scissorTestEnabled: false);
*
* pipelineDescription.PrimitiveTopology = PrimitiveTopology.TriangleStrip;
* pipelineDescription.ResourceLayouts = System.Array.Empty<ResourceLayout>();
* pipelineDescription.ShaderSet = new ShaderSetDescription(
* vertexLayouts: new VertexLayoutDescription[]
* {
* VertexPositionColor.VertexLayout,
* },
* shaders: shader.Programs);
* pipelineDescription.Outputs = veldridGraphicsDevice.SwapchainFramebuffer.OutputDescription;
*
* veldridPipeline = factory.CreateGraphicsPipeline(pipelineDescription);
*/
veldridCommandList = factory.CreateCommandList();
}
/// <summary>
/// Setups the engine and initialises the window
/// </summary>
internal void MainLoop()
{
VesselLogger.Logger.Info("Initialising Vessel...");
//Setup the window
VesselWindow window;
window = new VesselWindow(GraphicsDevice, config.Name, config.Width, config.Height);
Window = window;
// Initialise RenderDoc
if (config.RenderDoc)
{
RenderDoc.Initialise();
}
//Initialise the Graphics Device
GraphicsDevice.Initialise(window, config);
Window.Invalidate();
//Callback for the engine
Initialise();
VesselLogger.Logger.Info($"Started Vessel using {GraphicsDevice.GraphicsAPI}!");
//Deltatime variables
long previousFrameTicks = 0;
Stopwatch sw = new Stopwatch();
sw.Start();
//Main Loop
while (Window.Exists)
{
Window.ProcessEvents();
//Calculate delta-time
long currentFrameTicks = sw.ElapsedTicks;
double deltaSeconds = (currentFrameTicks - previousFrameTicks) / (double)Stopwatch.Frequency;
//Wait till next frame if we are locking the target framerate
while (LimitFrameRate && deltaSeconds < TargetFrameTime)
{
currentFrameTicks = sw.ElapsedTicks;
deltaSeconds = (currentFrameTicks - previousFrameTicks) / (double)Stopwatch.Frequency;
}
DeltaTime = (float)deltaSeconds;
previousFrameTicks = currentFrameTicks;
//Update method
Update();
//Only Draw if the window is still open
if (!Window.Exists)
{
break;
}
GraphicsDevice.OnFrameBegin();
// Draw the scene
GraphicsDevice.Debug.PushGroup("Draw Scene");
Draw();
GraphicsDevice.Debug.PopGroup();
// Draw layers + post processing
GraphicsDevice.Debug.PushGroup("Draw Layers");
RenderLayers.Draw();
GraphicsDevice.Debug.PopGroup();
GraphicsDevice.OnFrameEnd();
}
// Cleanup
VesselLogger.Logger.Info("Shutting down Vessel...");
Exiting();
}
