private void Viewport_Paint()
{
lock (RenderSync)
{
Viewport.MakeCurrent();
Membrane.MeshProgram.Use();
{
Membrane.MeshProgram.SetUniform("worldViewProjMatrix", Viewport.Camera.GetViewProj());
Membrane.MeshProgram.SetUniform("surfaceOffset",
(float)SurfaceOffset * MainWindow.Options.PixelScale.X);
if (Membrane.TomogramTexture != null)
{
Membrane.MeshProgram.SetUniform("useVolume", 1f);
Membrane.MeshProgram.SetUniform("volScale", OpenGLHelper.Reciprocal(Membrane.TomogramTexture.Scale));
Membrane.MeshProgram.SetUniform("volOffset", Membrane.TomogramTexture.Offset);
Membrane.MeshProgram.SetUniform("texSize", OpenGLHelper.Reciprocal(Membrane.TomogramTexture.Size));
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture3D, Membrane.TomogramTexture.Handle);
}
else
{
Membrane.MeshProgram.SetUniform("useVolume", 0f);
}
GL.ActiveTexture(TextureUnit.Texture1);
GL.BindTexture(TextureTarget.Texture2D, Membrane.SelectionTexture.Handle);
float TraceStart = TraceDepthOffset;
float TraceLength = TraceDepth;
Membrane.MeshProgram.SetUniform("traceParams", new Vector2(TraceStart, TraceLength));
Membrane.MeshProgram.SetUniform("traceSharpening", (float)TraceSharpening / 100f);
float RangeMin = (float)Math.Min(OutputRangeMin, OutputRangeMax),
RangeMax = (float)Math.Max(OutputRangeMin, OutputRangeMax);
Membrane.MeshProgram.SetUniform("normalizeParams", new Vector2(RangeMin, RangeMax - RangeMin));
Vector3 LightDirection = Viewport.Camera.GetDirection();
Membrane.MeshProgram.SetUniform("lightDirection", LightDirection);
Membrane.MeshProgram.SetUniform("lightIntensity", 0.0f);
SurfaceMesh?.Draw();
}
Membrane.PointProgram.Use();
{
Membrane.PointProgram.SetUniform("worldViewProjMatrix",
MainWindow.Options.Viewport.Camera.GetViewProj());
// Draw back faces first, then front, to ensure correct transparency (locally)
GL.Enable(EnableCap.CullFace);
GL.CullFace(CullFaceMode.Front);
foreach (PointGroup group in PointGroups.Where(g => g.IsVisible && g.Points.Count > 0))
{
Membrane.PointProgram.SetUniform("cubeSize",
(float)group.Size * MainWindow.Options.PixelScale.X);
group.PointCloud.Draw();
}
GL.CullFace(CullFaceMode.Back);
foreach (PointGroup group in PointGroups.Where(g => g.IsVisible && g.Points.Count > 0))
{
Membrane.PointProgram.SetUniform("cubeSize",
(float)group.Size * MainWindow.Options.PixelScale.X);
group.PointCloud.Draw();
}
GL.Disable(EnableCap.CullFace);
}
}
}
