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IBOless rendering with quads; considerably reduces renderer complexity

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This commit is contained in:
Chris Forbes
2011-05-05 17:50:23 +12:00
parent 8e1bc25006
commit 4d6b2c7954
13 changed files with 43 additions and 262 deletions
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26
OpenRA.Game/Graphics/TerrainRenderer.cs
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@@ -19,7 +19,6 @@ namespace OpenRA.Graphics
class TerrainRenderer
{
IVertexBuffer<Vertex> vertexBuffer;
IIndexBuffer indexBuffer;
Sheet terrainSheet;
World world;
@@ -30,27 +29,23 @@ namespace OpenRA.Graphics
this.world = world;
this.map = world.Map;
Size tileSize = new Size( Game.CellSize, Game.CellSize );
var tileSize = new Size( Game.CellSize, Game.CellSize );
var tileMapping = new Cache<TileReference<ushort,byte>, Sprite>(
x => Game.modData.SheetBuilder.Add(world.TileSet.GetBytes(x), tileSize));
Vertex[] vertices = new Vertex[4 * map.Bounds.Height * map.Bounds.Width];
uint[] indices = new uint[6 * map.Bounds.Height * map.Bounds.Width];
var vertices = new Vertex[4 * map.Bounds.Height * map.Bounds.Width];
terrainSheet = tileMapping[map.MapTiles.Value[map.Bounds.Left, map.Bounds.Top]].sheet;
int nv = 0;
int ni = 0;
for( int j = map.Bounds.Top; j < map.Bounds.Bottom; j++ )
for( int i = map.Bounds.Left; i < map.Bounds.Right; i++ )
{
Sprite tile = tileMapping[map.MapTiles.Value[i, j]];
// TODO: The zero below should explicitly refer to the terrain palette, but this code is called
// before the palettes are created. Therefore assumes that "terrain" is the first palette to be defined
Util.FastCreateQuad(vertices, indices, Game.CellSize * new float2(i, j), tile, Game.modData.Palette.GetPaletteIndex("terrain"), nv, ni, tile.size);
var tile = tileMapping[map.MapTiles.Value[i, j]];
// TODO: move GetPaletteIndex out of the inner loop.
Util.FastCreateQuad(vertices, Game.CellSize * new float2(i, j), tile, Game.modData.Palette.GetPaletteIndex("terrain"), nv, tile.size);
nv += 4;
ni += 6;
if (tileMapping[map.MapTiles.Value[i, j]].sheet != terrainSheet)
throw new InvalidOperationException("Terrain sprites span multiple sheets");
@@ -58,14 +53,10 @@ namespace OpenRA.Graphics
vertexBuffer = Game.Renderer.Device.CreateVertexBuffer( vertices.Length );
vertexBuffer.SetData( vertices, nv );
indexBuffer = Game.Renderer.Device.CreateIndexBuffer( indices.Length );
indexBuffer.SetData( indices, ni );
}
public void Draw( WorldRenderer wr, Viewport viewport )
{
int indicesPerRow = map.Bounds.Width * 6;
int verticesPerRow = map.Bounds.Width * 4;
int visibleRows = (int)(viewport.Height * 1f / Game.CellSize + 2);
@@ -93,10 +84,9 @@ namespace OpenRA.Graphics
Game.Renderer.SpriteShader.SetValue( "DiffuseTexture", terrainSheet.Texture );
Game.Renderer.SpriteShader.Render(() =>
Game.Renderer.DrawBatch(vertexBuffer, indexBuffer,
new Range<int>(verticesPerRow * firstRow, verticesPerRow * lastRow),
new Range<int>(indicesPerRow * firstRow, indicesPerRow * lastRow),
PrimitiveType.TriangleList, Game.Renderer.SpriteShader));
Game.Renderer.DrawBatch(vertexBuffer,
verticesPerRow * firstRow, verticesPerRow * (lastRow - firstRow),
PrimitiveType.QuadList));
foreach (var r in world.WorldActor.TraitsImplementing<IRenderOverlay>())
r.Render( wr );