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Set world framebuffer size based on minimum zoom.

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This avoids reallocating buffers each time the player changes zoom level.
This commit is contained in:
Paul Chote
2021-05-15 13:45:09 +01:00
committed by reaperrr
parent 0735345674
commit 0d4b81fe6f
4 changed files with 38 additions and 19 deletions
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41
OpenRA.Game/Renderer.cs
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@@ -50,8 +50,11 @@ namespace OpenRA
Sprite screenSprite;
IFrameBuffer worldBuffer;
Sheet worldSheet;
Sprite worldSprite;
public Size WorldFrameBufferSize => worldSheet.Size;
SheetBuilder fontSheetBuilder;
readonly IPlatform platform;
@@ -59,7 +62,6 @@ namespace OpenRA
Size lastBufferSize = new Size(-1, -1);
Size lastWorldBufferSize = new Size(-1, -1);
Rectangle lastWorldViewport = Rectangle.Empty;
ITexture currentPaletteTexture;
IBatchRenderer currentBatchRenderer;
@@ -178,14 +180,9 @@ namespace OpenRA
}
}
public void BeginWorld(Rectangle worldViewport)
public void SetMaximumViewportSize(Size size)
{
if (renderType != RenderType.None)
throw new InvalidOperationException($"BeginWorld called with renderType = {renderType}, expected RenderType.None.");
BeginFrame();
var worldBufferSize = worldViewport.Size.NextPowerOf2();
var worldBufferSize = size.NextPowerOf2();
if (worldSprite == null || worldSprite.Sheet.Size != worldBufferSize)
{
worldBuffer?.Dispose();
@@ -195,24 +192,36 @@ namespace OpenRA
// Pixel art scaling mode is a customized bilinear sampling
worldBuffer.Texture.ScaleFilter = TextureScaleFilter.Linear;
worldSheet = new Sheet(SheetType.BGRA, worldBuffer.Texture);
// Invalidate cached state to force a shader update
lastWorldViewport = Rectangle.Empty;
worldSprite = null;
}
}
public void BeginWorld(Rectangle worldViewport)
{
if (renderType != RenderType.None)
throw new InvalidOperationException($"BeginWorld called with renderType = {renderType}, expected RenderType.None.");
BeginFrame();
if (worldSheet == null)
throw new InvalidOperationException($"BeginWorld called before SetMaximumViewportSize has been set.");
if (worldSprite == null || worldViewport.Size != worldSprite.Bounds.Size)
{
var worldSheet = new Sheet(SheetType.BGRA, worldBuffer.Texture);
worldSprite = new Sprite(worldSheet, new Rectangle(int2.Zero, worldViewport.Size), TextureChannel.RGBA);
}
worldBuffer.Bind();
if (worldBufferSize != lastWorldBufferSize || lastWorldViewport != worldViewport)
if (lastWorldViewport != worldViewport)
{
var depthScale = worldBufferSize.Height / (worldBufferSize.Height + depthMargin);
WorldSpriteRenderer.SetViewportParams(worldBufferSize, depthScale, depthScale / 2, worldViewport.Location);
WorldModelRenderer.SetViewportParams(worldBufferSize, worldViewport.Location);
var depthScale = worldSheet.Size.Height / (worldSheet.Size.Height + depthMargin);
WorldSpriteRenderer.SetViewportParams(worldSheet.Size, depthScale, depthScale / 2, worldViewport.Location);
WorldModelRenderer.SetViewportParams(worldSheet.Size, worldViewport.Location);
lastWorldViewport = worldViewport;
lastWorldBufferSize = worldBufferSize;
}
renderType = RenderType.World;