public override void Update()
{
const float left = 0;
const float top = 0;
float right = Size.X;
float bottom = Size.Y;
Vector4 color = _color.ToVector4();
_vertices[0] = new VertexDefinition.PositionColor {
position = new Vector3(left, top, 0), color = color
};
_vertices[1] = new VertexDefinition.PositionColor {
position = new Vector3(right, bottom, 0), color = color
};
_vertices[2] = new VertexDefinition.PositionColor {
position = new Vector3(left, bottom, 0), color = color
};
_vertices[3] = new VertexDefinition.PositionColor {
position = new Vector3(right, top, 0), color = color
};
DataStream mappedResource;
DeviceContext.MapSubresource(VertexBuffer, MapMode.WriteDiscard, SharpDX.Direct3D11.MapFlags.None,
out mappedResource);
mappedResource.WriteRange(_vertices);
DeviceContext.UnmapSubresource(VertexBuffer, 0);
}
public void Render(DeviceContext deviceContext, Matrix worldMatrix, Matrix viewMatrix, Matrix projectionMatrix)
{
if (_changed)
{
float left = (float)((ScreenSize.X / 2) * -1) + (float)Position.X;
float right = left + (float)Size.X;
float top = (float)(ScreenSize.Y / 2) - (float)Position.Y;
float bottom = top - (float)Size.Y;
_vertices[0] = new VertexDefinition.PositionColor {
position = new Vector3(left, top, Depth), color = _color
};
_vertices[1] = new VertexDefinition.PositionColor {
position = new Vector3(right, bottom, Depth), color = _color
};
_vertices[2] = new VertexDefinition.PositionColor {
position = new Vector3(left, bottom, Depth), color = _color
};
_vertices[3] = new VertexDefinition.PositionColor {
position = new Vector3(right, top, Depth), color = _color
};
DataStream mappedResource;
deviceContext.MapSubresource(_vertexBuffer, MapMode.WriteDiscard, SharpDX.Direct3D11.MapFlags.None, out mappedResource);
mappedResource.WriteRange(_vertices);
deviceContext.UnmapSubresource(_vertexBuffer, 0);
_changed = false;
}
// Set vertex buffer stride and offset.
int stride = Utilities.SizeOf <VertexDefinition.PositionColor>(); //Gets or sets the stride between vertex elements in the buffer (in bytes).
deviceContext.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(_vertexBuffer, stride, 0));
deviceContext.InputAssembler.SetIndexBuffer(_indexBuffer, Format.R32_UInt, 0);
deviceContext.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
_shader.Render(deviceContext, _indexCount, worldMatrix, viewMatrix, projectionMatrix);
}
