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Maintain paletted textures (#574)

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Anders Jenbo 2025-07-10 18:07:03 +02:00 committed by GitHub
parent 96f60cb683
commit 28b026f605
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GPG Key ID: B5690EEEBB952194
1 changed files with 23 additions and 20 deletions
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43
extensions/src/textureloader.cpp
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@ -22,13 +22,14 @@ bool TextureLoader::PatchTexture(LegoTextureInfo* p_textureInfo)
desc.dwWidth = surface->w;
desc.dwHeight = surface->h;
desc.ddpfPixelFormat.dwFlags = DDPF_RGB | DDPF_ALPHAPIXELS;
desc.ddpfPixelFormat.dwRGBBitCount = details->bits_per_pixel == 8 ? 24 : details->bits_per_pixel;
desc.ddpfPixelFormat.dwRGBBitCount = details->bits_per_pixel;
desc.ddpfPixelFormat.dwRBitMask = details->Rmask;
desc.ddpfPixelFormat.dwGBitMask = details->Gmask;
desc.ddpfPixelFormat.dwBBitMask = details->Bmask;
desc.ddpfPixelFormat.dwRGBAlphaBitMask = details->Amask;
if (VideoManager()->GetDirect3D()->DirectDraw()->CreateSurface(&desc, &p_textureInfo->m_surface, NULL) != DD_OK) {
LPDIRECTDRAW pDirectDraw = VideoManager()->GetDirect3D()->DirectDraw();
if (pDirectDraw->CreateSurface(&desc, &p_textureInfo->m_surface, NULL) != DD_OK) {
SDL_DestroySurface(surface);
return false;
}
@ -45,29 +46,31 @@ bool TextureLoader::PatchTexture(LegoTextureInfo* p_textureInfo)
Uint8* srcPixels = (Uint8*) surface->pixels;
if (details->bits_per_pixel == 8) {
SDL_Palette* palette = SDL_GetSurfacePalette(surface);
if (palette) {
for (int y = 0; y < surface->h; ++y) {
Uint8* srcRow = srcPixels + y * surface->pitch;
Uint8* dstRow = dst + y * desc.lPitch;
for (int x = 0; x < surface->w; ++x) {
SDL_Color color = palette->colors[srcRow[x]];
dstRow[x * 3 + 0] = color.r;
dstRow[x * 3 + 1] = color.g;
dstRow[x * 3 + 2] = color.b;
}
}
}
else {
p_textureInfo->m_surface->Unlock(desc.lpSurface);
SDL_Palette* sdlPalette = SDL_GetSurfacePalette(surface);
if (!sdlPalette) {
SDL_DestroySurface(surface);
return false;
}
}
else {
memcpy(dst, srcPixels, surface->pitch * surface->h);
PALETTEENTRY entries[256];
for (int i = 0; i < sdlPalette->ncolors; ++i) {
entries[i].peRed = sdlPalette->colors[i].r;
entries[i].peGreen = sdlPalette->colors[i].g;
entries[i].peBlue = sdlPalette->colors[i].b;
entries[i].peFlags = PC_NONE;
}
LPDIRECTDRAWPALETTE ddPalette = nullptr;
if (pDirectDraw->CreatePalette(DDPCAPS_8BIT | DDPCAPS_ALLOW256, entries, &ddPalette, NULL) != DD_OK) {
SDL_DestroySurface(surface);
return false;
}
p_textureInfo->m_surface->SetPalette(ddPalette);
ddPalette->Release();
}
memcpy(dst, srcPixels, surface->pitch * surface->h);
p_textureInfo->m_surface->Unlock(desc.lpSurface);
p_textureInfo->m_palette = NULL;