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dramatically enhance circle primitive rendering performance

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This commit is contained in:
The Fuzzy Riolu 2018-06-03 08:39:30 -04:00
parent 026fa30a2e
commit fda632b98a
2 changed files with 14 additions and 2 deletions
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2
OpenWheels

@ -1 +1 @@
Subproject commit 1a6724c714826fddfb985fb546539229619b24c7
Subproject commit 4c6b3206252891aa6f47d6addf9994ff4d798b5b

14
PeaceEngine/GraphicsSubsystem/GraphicsContext.cs
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@ -55,6 +55,8 @@ namespace Plex.Engine.GraphicsSubsystem
private Dictionary<string, int> _textureIDMap = new Dictionary<string, int>();
private float _circleDefaultStepSize = 0;
public GraphicsContext(GraphicsDevice device)
{
_spriteBatch = new SpriteBatch(device);
@ -65,6 +67,7 @@ namespace Plex.Engine.GraphicsSubsystem
_white.Name = $"white_{Guid.NewGuid().ToString()}";
_whiteUid = _white.Name;
_batcher.RegisterTexture(_white);
_circleDefaultStepSize = _batcher.GetCircleStepSize(OpenWheels.Rendering.Batcher.RightStartAngle, OpenWheels.Rendering.Batcher.RightEndAngle, 180);
}
private string getID(Texture2D tex)
@ -129,7 +132,16 @@ namespace Plex.Engine.GraphicsSubsystem
public void DrawCircle(Vector2 center, float radius, Color color, Texture2D texture = null)
{
_batcher.SetTexture(getID(texture));
_batcher.FillCircle(center.ToNum() - new Vector2(RenderOffsetX, RenderOffsetY).ToNum(), radius, color.ToOw(), 180);
float circumference = (float)(Math.PI * (Math.Pow(radius, 2)));
int triangles = (int)Math.Round(circumference * _circleDefaultStepSize);
if (triangles < 1)
{
_batcher.FillRect(new RectangleF(new Vector2(center.X - radius, center.Y - radius) - new Vector2(RenderOffsetX, RenderOffsetY), new Vector2(radius * 2, radius * 2)).ToOw(), color.ToOw());
}
else
{
_batcher.FillCircle(center.ToNum() - new Vector2(RenderOffsetX, RenderOffsetY).ToNum(), radius, color.ToOw(), 180);
}
}
public void FillRectangle(RectangleF rect, Texture2D texture)