public void CanGetVertexStreamForIndexedLineList()
{
// Arrange.
var device = new Device();
var inputAssembler = new InputAssemblerStage(device);
var inputSignature = GetTestVertexPositionNormalTextureShaderBytecode();
inputAssembler.InputLayout = new InputLayout(device, TestVertex.PositionNormalTexture.InputElements, inputSignature);
inputAssembler.PrimitiveTopology = PrimitiveTopology.LineList;
var vertices = new[]
{
new TestVertex.PositionNormalTexture(),
new TestVertex.PositionNormalTexture(),
new TestVertex.PositionNormalTexture(new Vector3(1, 2, 3), new Vector3(3, 2, 1), new Vector2(3, 4)),
new TestVertex.PositionNormalTexture(new Vector3(4, 5, 6), new Vector3(4, 6, 8), new Vector2(0.5f, 0.3f))
};
var vertexBuffer = device.CreateBuffer(new BufferDescription(BindFlags.VertexBuffer), vertices);
inputAssembler.SetVertexBuffers(0, new[]
{
new VertexBufferBinding(vertexBuffer, 0, TestVertex.PositionNormalTexture.SizeInBytes)
});
var indexBuffer = device.CreateBuffer(new BufferDescription(BindFlags.IndexBuffer), new ushort[] { 2, 16, 1, 0 });
inputAssembler.SetIndexBuffer(indexBuffer, Format.R16_UInt, 2);
// Act.
var vertexStream = inputAssembler.GetVertexStreamIndexed(inputSignature, 2, 1, 2).ToList();
// Assert.
Assert.That(vertexStream, Has.Count.EqualTo(2));
Assert.That(vertexStream[0].InstanceID, Is.EqualTo(0));
Assert.That(vertexStream[0].VertexID, Is.EqualTo(1));
Assert.That(vertexStream[0].Data, Is.EqualTo(new[]
{
new Number4(4.0f, 5.0f, 6.0f, 0.0f),
new Number4(4.0f, 6.0f, 8.0f, 0.0f),
new Number4(0.5f, 0.3f, 0.0f, 0.0f)
}));
Assert.That(vertexStream[1].InstanceID, Is.EqualTo(0));
Assert.That(vertexStream[1].VertexID, Is.EqualTo(2));
Assert.That(vertexStream[1].Data, Is.EqualTo(new[]
{
new Number4(1.0f, 2.0f, 3.0f, 0.0f),
new Number4(3.0f, 2.0f, 1.0f, 0.0f),
new Number4(3.0f, 4.0f, 0.0f, 0.0f)
}));
}
public void RenderInstanced()
{
inputAssembler.InputLayout = inputLayout;
foreach (ShapeData s in shapes.Values)
{
inputAssembler.SetVertexBuffers(0, s.BufferBindings);
inputAssembler.PrimitiveTopology = s.PrimitiveTopology;
if (s.IndexBuffer != null)
{
inputAssembler.SetIndexBuffer(s.IndexBuffer, s.IndexFormat, 0);
device.ImmediateContext.DrawIndexedInstanced(s.IndexCount, s.InstanceDataList.Count, 0, 0, 0);
}
else
{
device.ImmediateContext.DrawInstanced(s.VertexCount, s.InstanceDataList.Count, 0, 0);
}
}
}
void RenderLights()
{
inputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
inputAssembler.InputLayout = lightVolumeInputLayout;
inputAssembler.SetVertexBuffers(0, pointLightVolumeVertexBufferBinding);
inputAssembler.SetIndexBuffer(pointLightVolumeIndexBuffer, Format.R32_UInt, 0);
lightDepthBufferVar.SetResource(depthBufferRes);
lightNormalBufferVar.SetResource(normalBufferRes);
Vector3 eyePosition = MathHelper.Convert(Demo.Freelook.Eye);
var previousState = _immediateContext.Rasterizer.State;
// Camera outside light volume
_immediateContext.Rasterizer.State = backCullState;
outputMerger.SetDepthStencilState(outsideLightVolumeDepthState);
foreach (var light in lights)
{
float radius = light.Radius;
float bias = radius * 2;
if ((light.Position - eyePosition).LengthSquared() >= (radius * radius) + bias)
{
RenderLight(light);
}
}
// Camera inside light volume
_immediateContext.Rasterizer.State = frontCullState;
outputMerger.SetDepthStencilState(insideLightVolumeDepthState);
foreach (var light in lights)
{
float bias = light.Radius * 2;
if ((light.Position - eyePosition).LengthSquared() < (light.Radius * light.Radius) + bias)
{
RenderLight(light);
}
}
_immediateContext.Rasterizer.State = previousState;
}
/// <summary>
/// Sets an index buffer using a binding.
/// </summary>
/// <param name="inputAssembler">Assembler to set.</param>
/// <param name="binding">Binding to set to the device for indices.</param>
/// <param name="offset">Offset from the beginning of the index buffer to start reading.</param>
public static void SetIndexBuffer(this InputAssemblerStage inputAssembler, IndexBuffer binding, int offset = 0)
{
inputAssembler.SetIndexBuffer(binding.Buffer, binding.Format, offset);
}
internal void Apply(InputAssemblerStage inputAssemblerStage)
{
inputAssemblerStage.SetVertexBuffers(0, nativeVertexBufferBindings);
inputAssemblerStage.SetIndexBuffer(nativeIndexBuffer, indexFormat, indexBufferOffset);
}
public void Bind(InputAssemblerStage inputAssembler)
{
inputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
inputAssembler.SetVertexBuffers(0, new VertexBufferBinding(vertexBuffer, VertexInfo.SizeInBytes, 0));
inputAssembler.SetIndexBuffer(indexBuffer, SharpDX.DXGI.Format.R32_UInt, 0);
}