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Fixed up textures in UI

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This commit is contained in:
Jan Racek
2026-03-26 17:27:10 +01:00
parent 5fffcea6cf
commit a8aa674a9c
2 changed files with 27 additions and 4 deletions
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7
Runtime/PSXUIExporter.cs
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@@ -13,7 +13,7 @@ namespace SplashEdit.RuntimeCode
/// </summary>
public static class PSXUIExporter
{
/// <summary>
/// <summary>
/// Collect all PSXCanvas components and their child UI elements,
/// converting RectTransform coordinates to PS1 pixel space.
/// Also collects and deduplicates custom fonts.
@@ -242,6 +242,8 @@ namespace SplashEdit.RuntimeCode
if (img.PackedTexture != null)
{
PSXTexture2D tex = img.PackedTexture;
// Convert PackingX from VRAM halfwords to texture-pixel U coords.
// 4bpp: 4 pixels per halfword, 8bpp: 2, 16bpp: 1
int expander = 16 / (int)tex.BitDepth;
data.TexpageX = tex.TexpageX;
data.TexpageY = tex.TexpageY;
@@ -249,7 +251,8 @@ namespace SplashEdit.RuntimeCode
data.ClutY = (ushort)tex.ClutPackingY;
data.U0 = (byte)(tex.PackingX * expander);
data.V0 = (byte)tex.PackingY;
data.U1 = (byte)(tex.PackingX * expander + tex.Width * expander / ((int)tex.BitDepth / (int)PSXBPP.TEX_4BIT));
// Width is already in source pixels = texture-pixel units
data.U1 = (byte)(tex.PackingX * expander + tex.Width);
data.V1 = (byte)(tex.PackingY + tex.Height);
data.BitDepthIndex = tex.BitDepth switch
{

24
Runtime/TexturePacker.cs
View File

@@ -82,6 +82,8 @@ namespace SplashEdit.RuntimeCode
// List to track unique textures and their indices
List<PSXTexture2D> uniqueTextures = new List<PSXTexture2D>();
Dictionary<(int, PSXBPP), int> textureToIndexMap = new Dictionary<(int, PSXBPP), int>();
// Track duplicates so we can propagate packing data after placement
List<(PSXTexture2D duplicate, int uniqueIndex)> duplicates = new List<(PSXTexture2D, int)>();
// Group textures by bit depth (highest first).
var texturesByBitDepth = allTextures
@@ -112,7 +114,8 @@ namespace SplashEdit.RuntimeCode
// Check if we've already processed this texture
if (textureToIndexMap.TryGetValue(textureKey, out int existingIndex))
{
// This texture is a duplicate, skip packing but remember the mapping
// This texture is a duplicate, skip packing but track for later fixup
duplicates.Add((texture, existingIndex));
continue;
}
@@ -196,6 +199,21 @@ namespace SplashEdit.RuntimeCode
AllocateCLUTs();
// Build the final VRAM pixel array from placed textures and CLUTs.
BuildVram();
// Propagate packing coordinates to duplicate textures (e.g. UI images
// sharing the same source texture as a 3D object). Without this, the
// duplicate's PackingX/Y/TexpageX/Y/ClutPackingX/Y stay at zero.
foreach (var (dup, idx) in duplicates)
{
var unique = uniqueTextures[idx];
dup.PackingX = unique.PackingX;
dup.PackingY = unique.PackingY;
dup.TexpageX = unique.TexpageX;
dup.TexpageY = unique.TexpageY;
dup.ClutPackingX = unique.ClutPackingX;
dup.ClutPackingY = unique.ClutPackingY;
}
return (objects, _finalizedAtlases.ToArray(), _vramPixels);
}
@@ -345,9 +363,11 @@ namespace SplashEdit.RuntimeCode
// For non-16-bit textures, copy the color palette into VRAM.
if (texture.BitDepth != PSXBPP.TEX_16BIT)
{
// ClutPackingX is pre-divided by 16, multiply back for VRAM pixel position
int clutPixelX = texture.ClutPackingX * 16;
for (int x = 0; x < texture.ColorPalette.Count; x++)
{
_vramPixels[x + texture.ClutPackingX, texture.ClutPackingY] = texture.ColorPalette[x];
_vramPixels[clutPixelX + x, texture.ClutPackingY] = texture.ColorPalette[x];
}
}
}