c9eef1d7cd
Add uUseTexture==2 (RGBA modulate) branch to ui_text.frag so dat sprites can be drawn through the existing 2D batcher without touching the font path. TextRenderer gains _spriteBufs (per-GL-handle List<float>), DrawSprite(), and a Flush block that issues one draw call per distinct texture with uUseTexture=2. Also adds DepthMask(false) in the state-save block (restored to true after) to prevent the transparent-quad pass from writing depth and corrupting the 3D scene if the UI is flushed mid-frame. TextureCache gains GetOrUpload(surfaceId, out width, out height) — caches pixel dimensions alongside the GL handle so UI 9-slice geometry can compute slice UVs from the source image size without a second decode. UiRenderContext gains a DrawSprite forwarder that applies the current 2D translate stack, matching the DrawRect / DrawRectOutline pattern. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
67 lines
2.4 KiB
C#
67 lines
2.4 KiB
C#
using System.Numerics;
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using AcDream.App.Rendering;
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namespace AcDream.App.UI;
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/// <summary>
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/// Per-frame drawing context passed through the <see cref="UiElement"/>
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/// tree. Wraps a <see cref="TextRenderer"/> (our 2D sprite batcher) and a
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/// transform stack so elements can draw in local coordinates.
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///
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/// Retail equivalent: the implicit context <c>FUN_005da8f0</c> walks with
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/// when iterating the UI tree. Our version is explicit so it plugs
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/// cleanly into Silk.NET.
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/// </summary>
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public sealed class UiRenderContext
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{
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public TextRenderer TextRenderer { get; }
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public BitmapFont? DefaultFont { get; set; }
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public Vector2 ScreenSize { get; }
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// Transform stack — simple 2D translate (no rotation/scale for UI).
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private readonly System.Collections.Generic.List<Vector2> _stack = new();
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private Vector2 _current;
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public UiRenderContext(TextRenderer tr, Vector2 screenSize, BitmapFont? defaultFont = null)
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{
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TextRenderer = tr;
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ScreenSize = screenSize;
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DefaultFont = defaultFont;
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}
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/// <summary>Push a relative translate. Must be paired with <see cref="PopTransform"/>.</summary>
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public void PushTransform(float dx, float dy)
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{
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_stack.Add(_current);
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_current += new Vector2(dx, dy);
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}
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public void PopTransform()
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{
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if (_stack.Count == 0) return;
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_current = _stack[^1];
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_stack.RemoveAt(_stack.Count - 1);
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}
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public Vector2 CurrentOrigin => _current;
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// ── Pass-through draw helpers (add current translate) ──────────────
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public void DrawRect(float x, float y, float w, float h, Vector4 color)
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=> TextRenderer.DrawRect(_current.X + x, _current.Y + y, w, h, color);
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public void DrawRectOutline(float x, float y, float w, float h, Vector4 color, float thickness = 1f)
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=> TextRenderer.DrawRectOutline(_current.X + x, _current.Y + y, w, h, color, thickness);
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public void DrawSprite(uint texture, float x, float y, float w, float h,
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float u0, float v0, float u1, float v1, Vector4 tint)
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=> TextRenderer.DrawSprite(texture,
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_current.X + x, _current.Y + y, w, h, u0, v0, u1, v1, tint);
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public void DrawString(string text, float x, float y, Vector4 color, BitmapFont? font = null)
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{
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var f = font ?? DefaultFont;
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if (f is null) return;
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TextRenderer.DrawString(f, text, _current.X + x, _current.Y + y, color);
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}
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}
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