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https://github.com/Facepunch/sbox-public.git
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3088614ea7
Panel can record custom commandlist like so:
```csharp
public class GlowPanel : Panel, IPanelDraw
{
static Material GlowMat = Material.FromShader( "shaders/ui_glow.shader" );
public void Draw( CommandList cl )
{
cl.Attributes.Set( "GlowColor", Color.Cyan );
cl.DrawQuad( Box.Rect, GlowMat, Color.White );
}
}```
80 lines
2.1 KiB
C#
80 lines
2.1 KiB
C#
namespace Sandbox.UI;
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internal partial class PanelRenderer
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{
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internal void BuildDescriptors( Panel panel, RenderState state )
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{
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if ( panel?.ComputedStyle == null || !panel.IsVisible )
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return;
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BuildTransformState( panel );
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UpdateScissorState( panel );
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var renderMode = PushRenderMode( panel );
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panel.CachedOverrideBlendMode = OverrideBlendMode;
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panel.UpdateLayer( panel.ComputedStyle );
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UpdateBackgroundImageState( panel );
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// Accumulate CSS opacity into state so children inherit it
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// without depending on layout having updated panel.Opacity.
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state = state with { RenderOpacity = state.RenderOpacity * (panel.ComputedStyle?.Opacity ?? 1.0f) };
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if ( MathF.Abs( panel.CachedRenderOpacity - state.RenderOpacity ) > 0.001f )
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{
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panel.CachedRenderOpacity = state.RenderOpacity;
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panel.IsRenderDirty = true;
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}
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if ( panel.IsRenderDirty || panel.HasPanelLayer )
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{
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panel.CachedDescriptors ??= RenderLayer.Rent();
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RebuildDescriptors( panel, ref state );
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}
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panel.CachedRenderMode = GetRenderMode( panel );
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if ( panel.HasChildren )
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panel.BuildDescriptorsForChildren( this, ref state );
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if ( panel.HasPanelLayer )
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panel.BuildLayerPopCommands( this, DefaultRenderTarget );
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if ( renderMode ) PopRenderMode();
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}
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Panel.RenderMode GetRenderMode( Panel panel )
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{
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if ( panel.HasPanelLayer )
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return Panel.RenderMode.Layer;
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if ( panel is IPanelDraw ) return Panel.RenderMode.Inline;
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if ( panel is ScenePanel ) return Panel.RenderMode.Inline;
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if ( panel is BasePopup ) return Panel.RenderMode.Inline;
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if ( panel.HasCustomDraw ) return Panel.RenderMode.Inline;
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return Panel.RenderMode.Batched;
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}
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void UpdateScissorState( Panel panel )
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{
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var hash = HashCode.Combine( ScissorGPU.Rect, ScissorGPU.CornerRadius, ScissorGPU.Matrix );
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if ( panel._lastScissorHash == hash ) return;
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panel._lastScissorHash = hash;
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panel.CachedDescriptors ??= new();
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panel.CachedDescriptors.Scissor = ScissorGPU;
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}
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void UpdateBackgroundImageState( Panel panel )
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{
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if ( panel.ComputedStyle?.BackgroundImage is not { } tex )
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return;
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if ( tex.IsDirty )
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panel.IsRenderDirty = true;
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tex.MarkUsed();
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}
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}
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