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Light rendering optimization

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This commit is contained in:
Regalis
2015-12-19 16:02:05 +02:00
parent 4234aa2094
commit e10bffde9b
6 changed files with 52 additions and 13 deletions
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Subsurface/Source/Map/Lights/ConvexHull.cs
+20 -9
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@@ -1,6 +1,7 @@
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
namespace Barotrauma.Lights
@@ -38,6 +39,8 @@ namespace Barotrauma.Lights
private VertexPositionColor[] shadowVertices;
private VertexPositionTexture[] penumbraVertices;
int shadowVertexCount;
private Entity parentEntity;
private Rectangle boundingBox;
@@ -73,6 +76,10 @@ namespace Barotrauma.Lights
cachedShadows = new Dictionary<LightSource, CachedShadow>();
shadowVertices = new VertexPositionColor[6 * 2];
penumbraVertices = new VertexPositionTexture[6];
vertices = points;
primitiveCount = vertices.Length;
@@ -139,6 +146,8 @@ namespace Barotrauma.Lights
private void CalculateShadowVertices(Vector2 lightSourcePos, bool los = true)
{
shadowVertexCount = 0;
//compute facing of each edge, using N*L
for (int i = 0; i < primitiveCount; i++)
{
@@ -172,15 +181,13 @@ namespace Barotrauma.Lights
startingIndex = nextEdge;
}
int shadowVertexCount;
//nr of vertices that are in the shadow
if (endingIndex > startingIndex)
shadowVertexCount = endingIndex - startingIndex + 1;
else
shadowVertexCount = primitiveCount + 1 - startingIndex + endingIndex;
shadowVertices = new VertexPositionColor[shadowVertexCount * 2];
//shadowVertices = new VertexPositionColor[shadowVertexCount * 2];
//create a triangle strip that has the shape of the shadow
int currentIndex = startingIndex;
@@ -213,8 +220,6 @@ namespace Barotrauma.Lights
private void CalculatePenumbraVertices(int startingIndex, int endingIndex, Vector2 lightSourcePos, bool los)
{
penumbraVertices = new VertexPositionTexture[6];
for (int n = 0; n < 4; n += 3)
{
Vector3 penumbraStart = new Vector3((n == 0) ? vertices[startingIndex] : vertices[endingIndex], 0.0f);
@@ -309,18 +314,23 @@ namespace Barotrauma.Lights
private void DrawShadows(GraphicsDevice graphicsDevice, Camera cam, Matrix transform, bool los = true)
{
Vector3 offset = Vector3.Zero;
if (parentEntity != null && parentEntity.Submarine != null)
{
offset = new Vector3(parentEntity.Submarine.DrawPosition.X, parentEntity.Submarine.DrawPosition.Y, 0.0f);
}
if (shadowVertexCount>0)
{
shadowEffect.World = Matrix.CreateTranslation(offset) * transform;
shadowEffect.CurrentTechnique.Passes[0].Apply();
shadowEffect.World = Matrix.CreateTranslation(offset) * transform;
shadowEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, shadowVertices, 0, shadowVertices.Length - 2);
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, shadowVertices, 0, shadowVertexCount*2 - 2);
}
if (los)
{
penumbraEffect.World = shadowEffect.World;
@@ -330,6 +340,7 @@ namespace Barotrauma.Lights
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleList, penumbraVertices, 0, 2, VertexPositionTexture.VertexDeclaration);
#endif
}
}
public void Remove()