private void display()
{
stopwatch.Start();
advectVelocity(g_dvfield, g_vxfield, g_vyfield, DIM, RPADW, DIM, DT, g_tPitch);
{
g_planr2c.Exec(g_vxfield.DevicePointer);
g_planr2c.Exec(g_vyfield.DevicePointer);
diffuseProject(g_vxfield, g_vyfield, CPADW, DIM, DT, VIS, g_tPitch);
g_planc2r.Exec(g_vxfield.DevicePointer);
g_planc2r.Exec(g_vyfield.DevicePointer);
}
updateVelocity(g_dvfield, g_vxfield, g_vyfield, DIM, RPADW, DIM, g_tPitch);
// Map D3D9 vertex buffer to CUDA
{
graphicsres.MapAllResources();
g_mparticles = graphicsres[0].GetMappedPointer <vertex>();
advectParticles(g_mparticles, g_dvfield, DIM, DIM, DT, g_tPitch);
graphicsres.UnmapAllResources();
}
device.Clear(ClearFlags.Target, new Color4(0.0f, 0, 0), 0.0f, 0);
device.SetRenderState(RenderState.ZWriteEnable, false);
device.SetRenderState(RenderState.AlphaBlendEnable, true);
device.SetRenderState(RenderState.SourceBlend, Blend.One);
device.SetRenderState(RenderState.DestinationBlend, Blend.One);
device.SetRenderState(RenderState.PointSpriteEnable, true);
float size = 16.0f;
device.SetRenderState(RenderState.PointSize, size);
device.SetTexture(0, g_pTexture);
if (device.BeginScene().IsSuccess)
{
Result res;
//Draw particles
res = device.SetStreamSource(0, g_pVB, 0, Marshal.SizeOf(typeof(vertex)));
device.VertexFormat = VertexFormat.Position | VertexFormat.Diffuse;
res = device.DrawPrimitives(PrimitiveType.PointList, 0, DS);
device.EndScene();
}
stopwatch.Stop();
device.Present();
fpsCount++;
if (fpsCount == fpsLimit)
{
float ifps = 1.0f / (stopwatch.GetElapsedTime() / 1000.0f);
string fps = string.Format(System.Globalization.CultureInfo.InvariantCulture, "CUDA/D3D9 Stable Fluids ({0} x {1}): {2} fps", DIM, DIM, ifps);
this.Text = fps;
fpsCount = 0;
fpsLimit = (int)Math.Max(ifps, 1.0f);
}
}
