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osu-lazer/osu.Game.Tests/Visual/Background/TestSceneTriangleBorderShader.cs

113 lines
3.3 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using osu.Framework.Allocation;
using osu.Framework.Graphics.Shaders;
using osu.Framework.Graphics.Shapes;
using osu.Framework.Graphics;
using osuTK;
using osuTK.Graphics;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Graphics.Rendering;
namespace osu.Game.Tests.Visual.Background
{
public partial class TestSceneTriangleBorderShader : OsuTestScene
{
private readonly TestTriangle triangle;
public TestSceneTriangleBorderShader()
{
Children = new Drawable[]
{
new Box
{
RelativeSizeAxes = Axes.Both,
Colour = Color4.DarkGreen
},
triangle = new TestTriangle
{
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
Size = new Vector2(200)
}
};
}
protected override void LoadComplete()
{
base.LoadComplete();
AddSliderStep("Thickness", 0f, 1f, 0.15f, t => triangle.Thickness = t);
AddSliderStep("Texel size", 0f, 0.1f, 0f, t => triangle.TexelSize = t);
}
private partial class TestTriangle : Sprite
{
private float thickness = 0.15f;
public float Thickness
{
get => thickness;
set
{
thickness = value;
Invalidate(Invalidation.DrawNode);
}
}
private float texelSize;
public float TexelSize
{
get => texelSize;
set
{
texelSize = value;
Invalidate(Invalidation.DrawNode);
}
}
[BackgroundDependencyLoader]
private void load(ShaderManager shaders, IRenderer renderer)
{
TextureShader = shaders.Load(VertexShaderDescriptor.TEXTURE_2, "TriangleBorder");
Texture = renderer.WhitePixel;
}
protected override DrawNode CreateDrawNode() => new TriangleDrawNode(this);
private class TriangleDrawNode : SpriteDrawNode
{
public new TestTriangle Source => (TestTriangle)base.Source;
public TriangleDrawNode(TestTriangle source)
: base(source)
{
}
private float thickness;
private float texelSize;
public override void ApplyState()
{
base.ApplyState();
thickness = Source.thickness;
texelSize = Source.texelSize;
}
public override void Draw(IRenderer renderer)
{
TextureShader.GetUniform<float>("thickness").UpdateValue(ref thickness);
TextureShader.GetUniform<float>("texelSize").UpdateValue(ref texelSize);
base.Draw(renderer);
}
protected override bool CanDrawOpaqueInterior => false;
}
}
}
}