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Support nested scissor rectangles.

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This commit is contained in:
Paul Chote
2013-10-23 18:40:04 +13:00
parent b31daf23ca
commit 94554d7678
8 changed files with 28 additions and 12 deletions
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22
OpenRA.Game/Graphics/Renderer.cs
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@@ -39,12 +39,14 @@ namespace OpenRA.Graphics
Queue<IVertexBuffer<Vertex>> tempBuffers = new Queue<IVertexBuffer<Vertex>>();
public Dictionary<string, SpriteFont> Fonts;
Stack<Rectangle> scissorState;
public Renderer()
{
TempBufferSize = Game.Settings.Graphics.BatchSize;
TempBufferCount = Game.Settings.Graphics.NumTempBuffers;
SheetSize = Game.Settings.Graphics.SheetSize;
scissorState = new Stack<Rectangle>();
WorldSpriteRenderer = new SpriteRenderer(this, device.CreateShader("shp"));
WorldRgbaSpriteRenderer = new SpriteRenderer(this, device.CreateShader("rgba"));
@@ -183,16 +185,30 @@ namespace OpenRA.Graphics
}
}
public void EnableScissor(int left, int top, int width, int height)
public void EnableScissor(Rectangle rect)
{
// Must remain inside the current scissor rect
if (scissorState.Any())
rect.Intersect(scissorState.Peek());
Flush();
Device.EnableScissor(left, top, width, height);
Device.EnableScissor(rect.Left, rect.Top, rect.Width, rect.Height);
scissorState.Push(rect);
}
public void DisableScissor()
{
scissorState.Pop();
Flush();
Device.DisableScissor();
// Restore previous scissor rect
if (scissorState.Any())
{
var rect = scissorState.Peek();
Device.EnableScissor(rect.Left, rect.Top, rect.Width, rect.Height);
}
else
Device.DisableScissor();
}
public void EnableDepthBuffer()