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Vastly improve shroud rendering performance.

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Changes in the shroud are now tracked. If a cell changes it will mark itself and its neighbors as dirty. During the render phase all dirty cells will have their vertices calculated and cached. If a cell is not dirty, the pre-calculated vertices are retrieved from cache. Then the sprite renderer is provided the sprite and the pre-calculated vertices to draw.

This prevents constant recalculation of vertices for the shroud in the render phase, requiring instead only dirty cells in the visible area. The update phase is reduced to a practical noop, instead incurring the cost only of changed cells each frame, rather than checking the visible area.
This commit is contained in:
RoosterDragon
2014-12-07 23:02:15 +00:00
parent df7588f1bc
commit 4d5101a7c4
2 changed files with 208 additions and 149 deletions
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47
OpenRA.Game/Graphics/SpriteRenderer.cs
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@@ -8,6 +8,7 @@
*/
#endregion
using System;
using System.Drawing;
namespace OpenRA.Graphics
@@ -49,6 +50,17 @@ namespace OpenRA.Graphics
}
}
void SetRenderStateForSprite(Sprite s)
{
renderer.CurrentBatchRenderer = this;
if (s.Sheet != currentSheet || s.BlendMode != currentBlend || nv + 4 > renderer.TempBufferSize)
Flush();
currentBlend = s.BlendMode;
currentSheet = s.Sheet;
}
public void DrawSprite(Sprite s, float2 location, PaletteReference pal)
{
DrawSprite(s, location, pal.TextureIndex, s.Size);
@@ -61,19 +73,7 @@ namespace OpenRA.Graphics
void DrawSprite(Sprite s, float2 location, float paletteTextureIndex, float2 size)
{
renderer.CurrentBatchRenderer = this;
if (s.Sheet != currentSheet)
Flush();
if (s.BlendMode != currentBlend)
Flush();
if (nv + 4 > renderer.TempBufferSize)
Flush();
currentBlend = s.BlendMode;
currentSheet = s.Sheet;
SetRenderStateForSprite(s);
Util.FastCreateQuad(vertices, location + s.FractionalOffset * size, s, paletteTextureIndex, nv, size);
nv += 4;
}
@@ -91,23 +91,18 @@ namespace OpenRA.Graphics
public void DrawSprite(Sprite s, float2 a, float2 b, float2 c, float2 d)
{
renderer.CurrentBatchRenderer = this;
if (s.Sheet != currentSheet)
Flush();
if (s.BlendMode != currentBlend)
Flush();
if (nv + 4 > renderer.TempBufferSize)
Flush();
currentSheet = s.Sheet;
currentBlend = s.BlendMode;
SetRenderStateForSprite(s);
Util.FastCreateQuad(vertices, a, b, c, d, s, 0, nv);
nv += 4;
}
public void DrawSprite(Sprite s, Vertex[] sourceVertices, int offset)
{
SetRenderStateForSprite(s);
Array.Copy(sourceVertices, offset, vertices, nv, 4);
nv += 4;
}
public void DrawVertexBuffer(IVertexBuffer<Vertex> buffer, int start, int length, PrimitiveType type, Sheet sheet)
{
shader.SetTexture("DiffuseTexture", sheet.GetTexture());