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Optimize prepared asset package v2

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This commit is contained in:
Erik 2026-08-27 20:09:09 +02:00
parent d123c4b67c
commit 0dd966f3a0
28 changed files with 1277 additions and 106 deletions
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42
src/AcDream.Content/MeshExtractor.cs
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@ -433,7 +433,18 @@ public sealed class MeshExtractor {
isClipMap,
surface.Type.HasFlag(SurfaceType.Additive));
if (TextureHelpers.IsCompressedFormat(renderSurface.Format)) {
if (CanPreserveCompressedTexture(
renderSurface.Format,
isClipMap,
surface.Translucency)) {
// Vulkan requires textureCompressionBC, so an unedited
// DAT DXT surface can stay byte-exact all the way to the
// GPU. Decoding it here inflated pak, CPU, and GPU
// residency by up to eight times.
textureFormat = ToTextureFormat(renderSurface.Format);
textureData = renderSurface.SourceData;
}
else if (TextureHelpers.IsCompressedFormat(renderSurface.Format)) {
isDxt3or5 = renderSurface.Format == DatReaderWriter.Enums.PixelFormat.PFID_DXT3 || renderSurface.Format == DatReaderWriter.Enums.PixelFormat.PFID_DXT5;
textureFormat = TextureFormat.RGBA8;
uploadPixelFormat = UploadPixelFormat.Rgba;
@ -822,7 +833,14 @@ public sealed class MeshExtractor {
isClipMap,
surface.Type.HasFlag(SurfaceType.Additive));
if (_decodedTextureCache.TryGet(decodedTextureKey, out var cachedData)) {
if (CanPreserveCompressedTexture(
renderSurface.Format,
isClipMap,
surface.Translucency)) {
textureData = renderSurface.SourceData;
textureFormat = ToTextureFormat(renderSurface.Format);
}
else if (_decodedTextureCache.TryGet(decodedTextureKey, out var cachedData)) {
textureData = cachedData;
textureFormat = TextureFormat.RGBA8;
uploadPixelFormat = UploadPixelFormat.Rgba;
@ -1126,6 +1144,26 @@ public sealed class MeshExtractor {
return textureData;
}
private static bool CanPreserveCompressedTexture(
DatReaderWriter.Enums.PixelFormat format,
bool isClipMap,
float translucency) =>
TextureHelpers.IsCompressedFormat(format)
&& !isClipMap
&& translucency <= 0.0f;
private static TextureFormat ToTextureFormat(
DatReaderWriter.Enums.PixelFormat format) => format switch
{
DatReaderWriter.Enums.PixelFormat.PFID_DXT1 => TextureFormat.DXT1,
DatReaderWriter.Enums.PixelFormat.PFID_DXT3 => TextureFormat.DXT3,
DatReaderWriter.Enums.PixelFormat.PFID_DXT5 => TextureFormat.DXT5,
_ => throw new ArgumentOutOfRangeException(
nameof(format),
format,
"The source is not a supported block-compressed texture."),
};
private void BuildPolygonIndices(Polygon poly, GfxObj gfxObj, Vector3 scale,
Dictionary<(ushort vertId, ushort uvIdx, bool isNeg), ushort> UVLookup,
List<VertexPositionNormalTexture> vertices, List<ushort> indices, bool useNegSurface, ref bool hasWrappingUVs) {