/// <summary>
/// Function to update the cube transform and send it to the GPU.
/// </summary>
private void UpdateCubeTransform()
{
_rotationAngle += GorgonTiming.Delta * 30.0f;
if (_rotationAngle > 360.0f)
{
_rotationAngle = 360.0f - _rotationAngle;
}
// Build our world/view/projection matrix to send to
// the shader.
_cube.RotateXYZ(_rotationAngle, _rotationAngle, 0);
DX.Matrix.Multiply(ref _cube.WorldMatrix, ref _view, out DX.Matrix temp);
DX.Matrix.Multiply(ref temp, ref _projection, out DX.Matrix wvp);
DX.Matrix.Transpose(ref wvp, out wvp);
_cubeTransform.SetData(ref wvp);
}
/// <summary>
/// Function to assign the volume texture to render.
/// </summary>
/// <param name="texture">The volume texture to render.</param>
public void AssignTexture(GorgonTexture3DView texture)
{
_textureView = texture;
var size = new DX.Vector3(texture.Width, texture.Height, texture.Depth);
float maxSize = texture.Width.Max(texture.Height).Max(texture.Depth);
var volParams = new VolumeRayParameters
{
Steps = new DX.Vector3(1.0f / texture.Width,
1.0f / texture.Height,
1.0f / texture.Depth) * 0.5f,
Iterations = (int)(maxSize * 2.0f)
};
_volumeRayParams.SetData(ref volParams);
var scaleFactor = new DX.Vector4(1.0f, 1.0f, 1.0f / (maxSize / size.Z), 1.0f);
_volumeScaleFactor.SetData(ref scaleFactor);
RebuildVolumeData();
}
/// <summary>
/// Function to process a texture into the output texture.
/// </summary>
/// <param name="texture">The texture to process.</param>
/// <param name="outputTexture">The output texture that will receive the processed texture.</param>
/// <param name="thickness">The thickness of the sobel lines.</param>
/// <param name="threshold">The threshold used to determine an edge.</param>
public void Process(GorgonTexture2DView texture, GorgonTexture2DReadWriteView outputTexture, int thickness, float threshold)
{
if ((texture == null) ||
(outputTexture == null))
{
return;
}
if ((_dispatch == null) || (_dispatch.ShaderResources[0] != texture) || (_dispatch.ReadWriteViews[0].ReadWriteView != outputTexture))
{
_dispatch = _dispatchBuilder.ReadWriteView(new GorgonReadWriteViewBinding(outputTexture))
.ShaderResource(texture)
.Build();
}
_sobelOptions[0] = thickness;
_sobelOptions[1] = threshold;
_sobelData.SetData(_sobelOptions);
// Send 32 threads per group.
_compute.Execute(_dispatch, (int)(texture.Width / 32.0f).FastCeiling(), (int)(texture.Height / 32.0f).FastCeiling(), 1);
}