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MarcelMediaDev
4b9d2cafac
NGG single-rect UI needs triangle-strip expansion; Prospero Index8 must expand to host u16; glyphs need base vertex from GE_INDX_OFFSET. Skip param-less rect-lists instead of inventing colour draws. Co-authored-by: Cursor <cursoragent@cursor.com>
96 lines
3.6 KiB
C#
96 lines
3.6 KiB
C#
// Copyright (C) 2026 SharpEmu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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using System.Buffers.Binary;
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using SharpEmu.Libs.Agc;
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using Xunit;
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namespace SharpEmu.Libs.Tests.Agc;
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/// <summary>
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/// Regression coverage for the AGC UI path: index8 expansion and rect-list
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/// vertex counts / topology selection.
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/// </summary>
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public sealed class AgcRectListIndexHelpersTests
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{
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[Theory]
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[InlineData(0u, 0u, 2)] // Index16
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[InlineData(1u, 1u, 4)] // Index32
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[InlineData(2u, 2u, 1)] // Index8
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[InlineData(0x402u, 2u, 1)] // UC 0x400|size -> Index8
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public void IndexType_DecodeAndStride_MatchProspero(uint raw, uint expected, int stride)
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{
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var decoded = AgcIndexHelpers.Decode(raw);
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Assert.Equal((AgcIndexHelpers.ProsperoIndexType)expected, decoded);
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Assert.Equal(stride, AgcIndexHelpers.GetGuestStrideBytes(decoded));
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}
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[Fact]
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public void ExpandIndex8ToU16_PreservesValues()
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{
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ReadOnlySpan<byte> source = [0x00, 0x01, 0xFF, 0x7F];
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Span<byte> destination = stackalloc byte[8];
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AgcIndexHelpers.ExpandIndex8ToU16(source, destination);
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Assert.Equal(0, BinaryPrimitives.ReadUInt16LittleEndian(destination[..2]));
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Assert.Equal(1, BinaryPrimitives.ReadUInt16LittleEndian(destination.Slice(2, 2)));
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Assert.Equal(255, BinaryPrimitives.ReadUInt16LittleEndian(destination.Slice(4, 2)));
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Assert.Equal(127, BinaryPrimitives.ReadUInt16LittleEndian(destination.Slice(6, 2)));
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}
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[Theory]
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// NGG single-rect UI (DualSense): expand even when VBs are present
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[InlineData(7u, 3u, false, true, 4u)]
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[InlineData(7u, 1u, false, false, 4u)]
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[InlineData(7u, 4u, false, true, 4u)]
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// Indexed / multi-vert auto: keep guest count (loading video)
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[InlineData(7u, 3u, true, false, 3u)]
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[InlineData(7u, 6u, false, true, 6u)]
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[InlineData(7u, 4u, true, true, 4u)]
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[InlineData(0x11u, 3u, false, false, 4u)]
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[InlineData(0x11u, 6u, false, false, 6u)]
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[InlineData(4u, 3u, false, false, 3u)]
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public void RectListDrawVertexCount_MatchesExpansion(
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uint primitiveType,
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uint vertexCount,
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bool indexed,
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bool hasVertexBuffers,
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uint expected)
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{
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Assert.Equal(
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expected,
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AgcPrimitiveHelpers.GetRectListDrawVertexCount(
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primitiveType,
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vertexCount,
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indexed,
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hasVertexBuffers));
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}
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[Theory]
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[InlineData(7u, false, 3u, true, true)]
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[InlineData(7u, false, 6u, true, false)]
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[InlineData(7u, true, 3u, false, false)]
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[InlineData(0x11u, false, 3u, true, true)]
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[InlineData(0x11u, true, 3u, false, false)]
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public void RectListTriangleStrip_MatchesGuards(
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uint primitiveType,
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bool indexed,
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uint vertexCount,
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bool hasVertexBuffers,
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bool expected) =>
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Assert.Equal(
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expected,
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AgcPrimitiveHelpers.ShouldDrawRectListAsTriangleStrip(
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primitiveType,
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indexed,
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vertexCount,
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hasVertexBuffers));
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[Theory]
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[InlineData(7u, (uint)AgcPrimitiveHelpers.GsOutputPrimitiveType.Rectangle2D)]
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[InlineData(0x11u, (uint)AgcPrimitiveHelpers.GsOutputPrimitiveType.RectList)]
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[InlineData(4u, (uint)AgcPrimitiveHelpers.GsOutputPrimitiveType.Triangles)]
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[InlineData(1u, (uint)AgcPrimitiveHelpers.GsOutputPrimitiveType.Points)]
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public void PrimitiveTypeToGsOut_MatchesProspero(uint primitiveType, uint expected) =>
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Assert.Equal(expected, AgcPrimitiveHelpers.PrimitiveTypeToGsOut(primitiveType));
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}
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