DrawingPerformanceTests.Draw30000LinesPerFrame Method

DrawingPerformanceTests Draw30000LinesPerFrame Method

Delta Engine Documentation

Proof that 30k lines can be rendered with up to 3000fps in a small window, fast GPU. Even 1000fps means that 30 million lines are drawn each second. More than 30k lines are possible with multiple draw calls, but causes multiple CircularBuffer flushes and thus not faster. View code on GitHub

Namespace: DeltaEngine.Graphics.Tests
Assembly: DeltaEngine.Graphics.Tests (in DeltaEngine.Graphics.Tests.dll) Version: 1.1.1.0 (1.1.1)

Syntax

C++

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public void Draw30000LinesPerFrame()

public void Draw30000LinesPerFrame()

Public Sub Draw30000LinesPerFrame

Public Sub Draw30000LinesPerFrame

public:
void Draw30000LinesPerFrame()

public:
void Draw30000LinesPerFrame()

member Draw30000LinesPerFrame : unit -> unit

member Draw30000LinesPerFrame : unit -> unit

Examples

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/// <summary> 
/// Proof that 30k lines can be rendered with up to 3000fps in a small window, fast GPU. Even 
/// 1000fps means that 30 million lines are drawn each second. More than 30k lines are possible 
/// with multiple draw calls, but causes multiple CircularBuffer flushes and thus not faster. 
/// </summary>
[Test, Category("Slow")]
public void Draw30000LinesPerFrame()
{
    var manyLines = new DrawingTests.Line(Vector2D.Zero, new Vector2D(1280, 720), Color.Red);
    const int NumberOfRandomLines = 30000;
    var vertices = new VertexPosition2DColor[2 * NumberOfRandomLines];
    var random = Randomizer.Current;
    var viewport = Resolve<Window>().ViewportPixelSize;
    for (int i = 0; i < NumberOfRandomLines; i++)
    {
        var startPoint = new Vector2D(random.Get(0, viewport.Width), random.Get(0, viewport.Height));
        var endPoint = startPoint + new Vector2D(random.Get(-50, 50), random.Get(-50, 50));
        vertices[i * 2 + 0] = new VertexPosition2DColor(startPoint, Color.GetRandomColor());
        vertices[i * 2 + 1] = new VertexPosition2DColor(endPoint, Color.GetRandomColor());
    }
    manyLines.Set(vertices);
}

/// <summary> 
/// Proof that 30k lines can be rendered with up to 3000fps in a small window, fast GPU. Even 
/// 1000fps means that 30 million lines are drawn each second. More than 30k lines are possible 
/// with multiple draw calls, but causes multiple CircularBuffer flushes and thus not faster. 
/// </summary>
[Test, Category("Slow")]
public void Draw30000LinesPerFrame()
{
    var manyLines = new DrawingTests.Line(Vector2D.Zero, new Vector2D(1280, 720), Color.Red);
    const int NumberOfRandomLines = 30000;
    var vertices = new VertexPosition2DColor[2 * NumberOfRandomLines];
    var random = Randomizer.Current;
    var viewport = Resolve<Window>().ViewportPixelSize;
    for (int i = 0; i < NumberOfRandomLines; i++)
    {
        var startPoint = new Vector2D(random.Get(0, viewport.Width), random.Get(0, viewport.Height));
        var endPoint = startPoint + new Vector2D(random.Get(-50, 50), random.Get(-50, 50));
        vertices[i * 2 + 0] = new VertexPosition2DColor(startPoint, Color.GetRandomColor());
        vertices[i * 2 + 1] = new VertexPosition2DColor(endPoint, Color.GetRandomColor());
    }
    manyLines.Set(vertices);
}