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Primitive batch now works. Probably.

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This commit is contained in:
Harrison Deng 2019-02-10 23:32:00 -06:00
parent 56eb4e9e7f
commit 2bd6d68490
1 changed files with 12 additions and 7 deletions
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19
RecrownedAthenaeum/Render/PrimitiveBatch.cs
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@ -19,10 +19,15 @@ namespace RecrownedAthenaeum.Render
int bufferPosition;
BasicEffect basicEffect;
PrimitiveType primitiveType;
int verticesPerPrimitive;
/// <summary>
/// The vertices per primitive. Can be ignored if using any of the list primitive types. Otherwise, needs to be manually set.
/// </summary>
public int verticesPerPrimitive;
GraphicsDevice graphicsDevice;
bool began;
bool disposed;
Camera3D camera;
/// <summary>
/// Creates a batch used to draw primitives.
@ -33,12 +38,9 @@ namespace RecrownedAthenaeum.Render
public PrimitiveBatch(Camera2D camera = null, GraphicsDevice graphicsDevice = null, int verticesPerBatch = 500)
{
this.graphicsDevice = graphicsDevice ?? (Configuration.GraphicsDeviceManager.GraphicsDevice);
camera = camera ?? (Configuration.Camera2D);
this.camera = camera ?? (Configuration.Camera2D);
basicEffect = new BasicEffect(this.graphicsDevice);
basicEffect.VertexColorEnabled = true;
basicEffect.Projection = camera.projectionMatrix;
basicEffect.View = camera.ViewMatrix;
basicEffect.World = Matrix.Identity;
vertices = new List<VertexPositionColor>(verticesPerBatch);
}
@ -56,9 +58,12 @@ namespace RecrownedAthenaeum.Render
{
case PrimitiveType.LineList: verticesPerPrimitive = 2; break;
case PrimitiveType.TriangleList: verticesPerPrimitive = 3; break;
default: verticesPerPrimitive = 1; break;
default: verticesPerPrimitive = -1; break;
}
basicEffect.World = camera.worldMatrix;
basicEffect.View = camera.ViewMatrix;
basicEffect.Projection = camera.projectionMatrix;
basicEffect.CurrentTechnique.Passes[0].Apply();
began = true;
}
@ -106,7 +111,7 @@ namespace RecrownedAthenaeum.Render
if (!began) throw new InvalidOperationException("Begin needs to be called before flushing.");
if (disposed) throw new ObjectDisposedException(this.GetType().Name);
if (bufferPosition == 0) return;
if (verticesPerPrimitive == -1) throw new InvalidOperationException("Vertices per primitive variable not set and using primitive type other than list.");
graphicsDevice.DrawUserPrimitives(primitiveType, vertices.ToArray(), 0, bufferPosition / verticesPerPrimitive);
vertices.Clear();
bufferPosition = 0;