public Texture(Veldrid.GraphicsDevice graphicsDevice, TextureFormat textureFormat, DataBuffer textureBuffer)
{
_texture = graphicsDevice.ResourceFactory.CreateTexture(Veldrid.TextureDescription.Texture2D(textureFormat.Width, textureFormat.Height, 1, 1,
Veldrid.PixelFormat.R8_G8_B8_A8_UNorm, Veldrid.TextureUsage.Sampled));
_textureBuffer = textureBuffer;
graphicsDevice.UpdateTexture(_texture, textureBuffer.GetIntPtr(), textureBuffer.GetSize(), 0, 0, 0, textureFormat.Width, textureFormat.Height, 1, 0, 0);
}
private void CreateIndexBuffer(Veldrid.GraphicsDevice graphicsDevice)
{
ushort[] quadIndices = { 0, 1, 2, 3 };
_indexBuffer = graphicsDevice.ResourceFactory.CreateBuffer(new Veldrid.BufferDescription(
(uint)(quadIndices.Length * sizeof(ushort)),
Veldrid.BufferUsage.IndexBuffer
));
graphicsDevice.UpdateBuffer(_indexBuffer, 0, quadIndices);
}
private void CreateResourceSet(Veldrid.GraphicsDevice graphicsDevice)
{
_resourceLayout = graphicsDevice.ResourceFactory.CreateResourceLayout(new Veldrid.ResourceLayoutDescription(
new Veldrid.ResourceLayoutElementDescription("ImageTexture", Veldrid.ResourceKind.TextureReadOnly, Veldrid.ShaderStages.Fragment),
new Veldrid.ResourceLayoutElementDescription("ImageSampler", Veldrid.ResourceKind.Sampler, Veldrid.ShaderStages.Fragment)
));
_textureView = graphicsDevice.ResourceFactory.CreateTextureView(_texture);
_resourceSet = graphicsDevice.ResourceFactory.CreateResourceSet(new Veldrid.ResourceSetDescription(
_resourceLayout,
_textureView,
graphicsDevice.PointSampler
));
}
private void CreateVertexBuffer(Veldrid.GraphicsDevice graphicsDevice)
{
ImageVertex[] quadVertices =
{
new ImageVertex(new Vector2(-1f, 1f), new Vector2(0,0)),
new ImageVertex(new Vector2(1f, 1f), new Vector2(1,0)),
new ImageVertex(new Vector2(-1f, -1f), new Vector2(0,1)),
new ImageVertex(new Vector2(1f, -1f), new Vector2(1,1))
};
_vertexBuffer = graphicsDevice.ResourceFactory.CreateBuffer(new Veldrid.BufferDescription(
(uint)(quadVertices.Length * Marshal.SizeOf(new ImageVertex())),
Veldrid.BufferUsage.VertexBuffer
));
graphicsDevice.UpdateBuffer(_vertexBuffer, 0, quadVertices);
}
private void CreateShaders(Veldrid.GraphicsDevice graphicsDevice)
{
var vertexShader = new Veldrid.ShaderDescription(
Veldrid.ShaderStages.Vertex,
Encoding.UTF8.GetBytes(VertexShader),
"main"
);
var fragmentShader = new Veldrid.ShaderDescription(
Veldrid.ShaderStages.Fragment,
Encoding.UTF8.GetBytes(FragmentShader),
"main"
);
_shaders = graphicsDevice.ResourceFactory.CreateFromSpirv(vertexShader, fragmentShader);
}
protected override void CreateWindow_Internal()
{
TickFunction WindowTick = new TickFunction
{
TickFunc = (DeltaTime) => {
var Snapshot = Window.PumpEvents();
VeldridInputSource.LastInputSnapshot(Snapshot);
},
TickPriority = TickFunction.HighPriority,
CanTick = true,
};
IEngine.Instance.GameThreadTickManager.AddTick(WindowTick);
Veldrid.StartupUtilities.WindowCreateInfo windowCI = new Veldrid.StartupUtilities.WindowCreateInfo
{
X = 100,
Y = 100,
WindowWidth = (int)ScreenSize.X,
WindowHeight = (int)ScreenSize.Y,
WindowInitialState = Veldrid.WindowState.Normal,
WindowTitle = "Intro",
};
Window = VeldridStartup.CreateWindow(ref windowCI);
Window.KeyDown += VeldridInputSource.OnWindowKeyEvent;
Window.KeyUp += VeldridInputSource.OnWindowKeyEvent;
Window.MouseDown += VeldridInputSource.OnWindowMouseEvent;
Window.MouseUp += VeldridInputSource.OnWindowMouseEvent;
Window.Resized += Window_Resized;
Window.Closing += Window_Closing;
Window.Closed += Window_Closed;
Window.LimitPollRate = true;
Veldrid.GraphicsDeviceOptions options = new Veldrid.GraphicsDeviceOptions()
{
PreferStandardClipSpaceYDirection = true,
Debug = false,
};
GraphicsDevice = VeldridStartup.CreateVulkanGraphicsDevice(options, Window);
ConstructVeldridResources();
}
public Image(Veldrid.GraphicsDevice graphicsDevice, TextureFormat textureFormat, DataBuffer textureBuffer)
{
// Perhaps create this somewhere else...?
// Texture begin
_texture = graphicsDevice.ResourceFactory.CreateTexture(Veldrid.TextureDescription.Texture2D(textureFormat.Width, textureFormat.Height, 1, 1,
Veldrid.PixelFormat.R8_G8_B8_A8_UNorm, Veldrid.TextureUsage.Sampled));
_textureBuffer = textureBuffer;
graphicsDevice.UpdateTexture(_texture, textureBuffer.GetIntPtr(), textureBuffer.GetSize(), 0, 0, 0, textureFormat.Width, textureFormat.Height, 1, 0, 0);
// Texture end
CreateVertexBuffer(graphicsDevice);
CreateIndexBuffer(graphicsDevice);
CreateResourceSet(graphicsDevice);
CreateShaders(graphicsDevice);
CreatePipeline(graphicsDevice);
}
private void CreatePipeline(Veldrid.GraphicsDevice graphicsDevice)
{
var vertexLayout = new Veldrid.VertexLayoutDescription(
new Veldrid.VertexElementDescription("Position", Veldrid.VertexElementSemantic.TextureCoordinate, Veldrid.VertexElementFormat.Float2),
new Veldrid.VertexElementDescription("TextureCoordinates", Veldrid.VertexElementSemantic.TextureCoordinate, Veldrid.VertexElementFormat.Float2)
);
_pipeline = graphicsDevice.ResourceFactory.CreateGraphicsPipeline(new Veldrid.GraphicsPipelineDescription
{
BlendState = Veldrid.BlendStateDescription.SingleDisabled,
DepthStencilState = Veldrid.DepthStencilStateDescription.Disabled,
RasterizerState = Veldrid.RasterizerStateDescription.CullNone,
PrimitiveTopology = Veldrid.PrimitiveTopology.TriangleStrip,
ResourceLayouts = new Veldrid.ResourceLayout[] { _resourceLayout },
ShaderSet = new Veldrid.ShaderSetDescription(
vertexLayouts: new Veldrid.VertexLayoutDescription[] { vertexLayout },
shaders: _shaders
),
Outputs = graphicsDevice.SwapchainFramebuffer.OutputDescription
});
}
