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 DrawIndexed(int indexCount, int startIndexLocation, int baseVertexLocation)
{
DiagnosticUtilities.RaiseEvent(this, DrawingIndexed, indexCount, startIndexLocation, baseVertexLocation);
DrawInternal(_inputAssembler.GetVertexStreamIndexed(_vertexShader.Shader.Bytecode.InputSignature, indexCount, startIndexLocation, baseVertexLocation));
}