488e86b2b8
0x202/0x203 now route through GfxState.SetObjectColor (sets HasColor); SnapshotVisibleObjects resolves Alpha/Tint/BlendKind. Drops the stale 'alpha deferred' trace stub — alpha/tint is now consumed by the compositor. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
46 lines
1.5 KiB
C#
46 lines
1.5 KiB
C#
using System.Linq;
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using Age.Engine.Model;
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using Xunit;
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public class RenderObjectBlendTests
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{
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// Make a visible textured object bound to a slot that has a surface, so it appears in the snapshot.
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private static GfxState WithVisibleObject(long handle, long resId, long colorKey)
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{
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var g = new GfxState();
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g.SetSurface(1, resId, colorKey);
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g.BindDraw(handle, 1, 0, 0, 10, 10, 0, 0); // draw-texture: slot 1, 10x10 at (0,0), visible
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return g;
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}
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[Fact]
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public void ObjectWithoutColor_ResolvesOpaqueWhiteTint()
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{
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var g = WithVisibleObject(0x100, resId: 5, colorKey: -1);
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var ro = g.SnapshotVisibleObjects().Single();
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Assert.Equal(255, ro.Alpha);
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Assert.Equal(0xFFFFFF, ro.Tint);
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Assert.Equal(BlendKind.Opaque, ro.Blend);
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}
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[Fact]
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public void DrawColor_0x203_SetsAlphaTintAndBlend()
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{
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var g = WithVisibleObject(0x100, resId: 5, colorKey: -1);
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// emulate op 0x203: pack (alpha=0x80, color=0x102030) and mark HasColor
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g.SetObjectColor(0x100, GfxState.PackColor(0x80, 0x102030));
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var ro = g.SnapshotVisibleObjects().Single();
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Assert.Equal(0x80, ro.Alpha);
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Assert.Equal(0x102030, ro.Tint);
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Assert.Equal(BlendKind.Alpha, ro.Blend);
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}
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[Fact]
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public void ColorKey_IsCarriedThrough()
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{
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var g = WithVisibleObject(0x100, resId: 5, colorKey: 0x000000); // key black
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var ro = g.SnapshotVisibleObjects().Single();
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Assert.Equal(0x000000, ro.ColorKey);
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}
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}
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