public void DrawInstanced(int vertexCountPerInstance, int instanceCount, int startVertexLocation, int startInstanceLocation)
{
DiagnosticUtilities.RaiseEvent(this, DrawingInstanced, vertexCountPerInstance, instanceCount, startVertexLocation, startInstanceLocation);
DrawInternal(_inputAssembler.GetVertexStreamInstanced(_vertexShader.Shader.Bytecode.InputSignature, vertexCountPerInstance,
instanceCount, startVertexLocation, startInstanceLocation));
}
public void CanGetVertexStreamForInstancedLineList()
{
// Arrange.
var device = new Device();
var inputAssembler = new InputAssemblerStage(device);
var inputSignature = GetInstancedTestVertexPositionNormalShaderBytecode();
var inputElements = TestVertex.PositionNormal.InputElements
.Union(new[]
{
new InputElement("INSTANCEPOS", 0, Format.R32G32B32_Float, 1, InputElement.AppendAligned,
InputClassification.PerInstanceData, 1),
new InputElement("INSTANCESCALE", 0, Format.R32G32B32_Float, 1, InputElement.AppendAligned,
InputClassification.PerInstanceData, 1),
new InputElement("INSTANCECOLOR", 0, Format.R32G32B32_Float, 2, InputElement.AppendAligned,
InputClassification.PerInstanceData, 2)
})
.ToArray();
inputAssembler.InputLayout = new InputLayout(device, inputElements, inputSignature);
inputAssembler.PrimitiveTopology = PrimitiveTopology.LineList;
var positionsAndNormals = new[]
{
new TestVertex.PositionNormal(new Vector3(1, 2, 3), new Vector3(3, 2, 1)),
new TestVertex.PositionNormal(new Vector3(4, 5, 6), new Vector3(4, 6, 8))
};
var instancePositions = new[]
{
new Vector3(0, 0, 0),
new Vector3(0, 0, 0),
new Vector3(-2, 3, 16), // Position
new Vector3(1, 1, 1), // Scale
new Vector3(5, 3, 11),
new Vector3(2, 2, 2),
new Vector3(2, 5, 10),
new Vector3(3, 3, 3),
new Vector3(12, 15, 8),
new Vector3(0.5f, 0.5f, 0.5f)
};
var instanceColors = new[]
{
new Color3F(0, 0, 0),
new Color3F(1, 0, 0),
new Color3F(0, 1, 0)
};
inputAssembler.SetVertexBuffers(0, new[]
{
new VertexBufferBinding(device.CreateBuffer(new BufferDescription(BindFlags.VertexBuffer), positionsAndNormals),
0, TestVertex.PositionNormal.SizeInBytes),
new VertexBufferBinding(device.CreateBuffer(new BufferDescription(BindFlags.VertexBuffer), instancePositions),
0, Vector3.SizeInBytes * 2),
new VertexBufferBinding(device.CreateBuffer(new BufferDescription(BindFlags.VertexBuffer), instanceColors),
0, Color3F.SizeInBytes)
});
// Act.
var vertexStream = inputAssembler.GetVertexStreamInstanced(inputSignature, 2, 4, 0, 1).ToList();
// Assert.
Assert.That(vertexStream, Has.Count.EqualTo(8));
Assert.That(vertexStream[0].InstanceID, Is.EqualTo(0));
Assert.That(vertexStream[0].VertexID, Is.EqualTo(0));
Assert.That(vertexStream[0].Data, Is.EqualTo(new[]
{
new Number4(1.0f, 2.0f, 3.0f, 0.0f), // Position
new Number4(3.0f, 2.0f, 1.0f, 0.0f), // Normal
new Number4(-2.0f, 3.0f, 16.0f, 0.0f), // Instance Pos
new Number4(1.0f, 1.0f, 1.0f, 0.0f), // Instance Scale
new Number4(1.0f, 0.0f, 0.0f, 0.0f) // Instance Colour
}));
Assert.That(vertexStream[1].InstanceID, Is.EqualTo(0));
Assert.That(vertexStream[1].VertexID, Is.EqualTo(1));
Assert.That(vertexStream[1].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(-2.0f, 3.0f, 16.0f, 0.0f),
new Number4(1.0f, 1.0f, 1.0f, 0.0f),
new Number4(1.0f, 0.0f, 0.0f, 0.0f)
}));
Assert.That(vertexStream[2].InstanceID, Is.EqualTo(1));
Assert.That(vertexStream[2].VertexID, Is.EqualTo(0));
Assert.That(vertexStream[2].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(5.0f, 3.0f, 11.0f, 0.0f),
new Number4(2.0f, 2.0f, 2.0f, 0.0f),
new Number4(1.0f, 0.0f, 0.0f, 0.0f)
}));
Assert.That(vertexStream[3].InstanceID, Is.EqualTo(1));
Assert.That(vertexStream[3].VertexID, Is.EqualTo(1));
Assert.That(vertexStream[3].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(5.0f, 3.0f, 11.0f, 0.0f),
new Number4(2.0f, 2.0f, 2.0f, 0.0f),
new Number4(1.0f, 0.0f, 0.0f, 0.0f)
}));
Assert.That(vertexStream[4].InstanceID, Is.EqualTo(2));
Assert.That(vertexStream[4].VertexID, Is.EqualTo(0));
Assert.That(vertexStream[4].Data, Is.EqualTo(new[]
{
new Number4(1.0f, 2.0f, 3.0f, 0.0f), // Position
new Number4(3.0f, 2.0f, 1.0f, 0.0f), // Normal
new Number4(2.0f, 5.0f, 10.0f, 0.0f), // Instance Pos
new Number4(3.0f, 3.0f, 3.0f, 0.0f), // Instance Scale
new Number4(0.0f, 1.0f, 0.0f, 0.0f) // Instance Colour
}));
Assert.That(vertexStream[5].InstanceID, Is.EqualTo(2));
Assert.That(vertexStream[5].VertexID, Is.EqualTo(1));
Assert.That(vertexStream[5].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(2.0f, 5.0f, 10.0f, 0.0f),
new Number4(3.0f, 3.0f, 3.0f, 0.0f),
new Number4(0.0f, 1.0f, 0.0f, 0.0f)
}));
Assert.That(vertexStream[6].InstanceID, Is.EqualTo(3));
Assert.That(vertexStream[6].VertexID, Is.EqualTo(0));
Assert.That(vertexStream[6].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(12.0f, 15.0f, 8.0f, 0.0f),
new Number4(0.5f, 0.5f, 0.5f, 0.0f),
new Number4(0.0f, 1.0f, 0.0f, 0.0f)
}));
Assert.That(vertexStream[7].InstanceID, Is.EqualTo(3));
Assert.That(vertexStream[7].VertexID, Is.EqualTo(1));
Assert.That(vertexStream[7].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(12.0f, 15.0f, 8.0f, 0.0f),
new Number4(0.5f, 0.5f, 0.5f, 0.0f),
new Number4(0.0f, 1.0f, 0.0f, 0.0f)
}));
}