/// <summary>
/// Renders a frame into the frame buffer. First, it is rendering the points and then the shaders.
/// Please note that depth buffering is enabled, which means that everything is rendered in depth order, not in call order.
/// </summary>
public static void RenderFrame()
{
Camera.CalculateMatrix();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.UseProgram(currentShader);
GL.BindTexture(TextureTarget.Texture1D, currentPalette);
currentManager.Uniform();
PlaneRenderable.Render();
if (Settings.Points)
{
GL.UseProgram(DefaultShader);
DefaultManager.Uniform();
PointManager.Render();
DefaultManager.UniformProjection(Camera.ScaleMatrix);
crosshair1.Render();
crosshair2.Render();
}
// Check for GL errors.
Utils.CheckError("Render");
}
/// <summary>
/// Clean up.
/// </summary>
public static void Dispose()
{
PointManager.Dispose();
PointRenderable.Dispose();
PlaneRenderable.Dispose();
ShaderManager.Dispose();
PaletteManager.Dispose();
}
/// <summary>
/// Respond to the resizing of the graph window and update accordingly.
/// </summary>
public static void ResizeViewport(int width, int height)
{
GL.Viewport(0, 0, width, height);
GL.Scissor(0, 0, width, height);
Camera.ResizeViewport(width, height);
PlaneRenderable.UpdateBuffer();
Utils.CheckError("Resize");
}
/// <summary>
/// Initialization process.
/// </summary>
public static void Load()
{
Camera.Load();
// Set variables to the settings default.
Factor1 = new Vector2(Settings.Factor1X, Settings.Factor1Y);
IMax = Settings.IMax;
SquaredLimit = Settings.Limit * Settings.Limit;
// Load in all the shaders found.
foreach (var name in FileManager.GetGraphShaderNames())
{
ShaderManager.Add(name);
}
// Load all palettes found.
foreach (var name in FileManager.GetPaletteImageNames())
{
PaletteManager.Add(name);
}
// Set the default shader for points
ChangeShader(Settings.PointShader, true);
// Activate the default shader and palette.
ChangeShader(Settings.DefaultShader);
ChangePalette(Settings.DefaultPalette);
// Configure GL properly.
GL.ClearColor(Color4.Black);
GL.Enable(EnableCap.Blend);
GL.LineWidth(2f);
// generate a GL Buffer with a plane in it and load it into GPU storage.
PointRenderable.Load();
PlaneRenderable.Load();
// Initialize the crosshair.
crosshair1 = new Point(Vector3.Zero, Color4.Black, 0.012f);
crosshair2 = new Point(new Vector3(0, 0, -0.000001f), Color4.White);
// Check for GL errors.
Utils.CheckError("Load");
}