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GX2: Add crash workaround for FFL uninitialized texture (#264)

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When a game tries to generate Miis without the FFL files being dumped (<mlc>/sys/title/0005001b/10056000/content/) it will cause it to create and use a texture with invalid parameters.
This workaround catches and replaces bad texture parameters to avoid crashing further down the line.

Resolves crashes in Sonic Lost World, Super Mario 3D World and probably a few others.

We had this workaround in pre-2.0 Cemu already but it was dropped during refactoring.
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Exzap 2022-09-17 16:32:46 +02:00 committed by GitHub
parent dd14778561
commit 12b6830546
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1 changed files with 26 additions and 0 deletions
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26
src/Cafe/OS/libs/gx2/GX2_Surface.cpp
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@ -112,8 +112,34 @@ namespace GX2
return levels;
}
void _GX2CalcSurfaceSizeAndAlignmentWorkaround(GX2Surface* surface)
{
// this workaround catches an issue where the FFL (Mii) library embedded into games tries to use an uninitialized texture
// and subsequently crashes. It only happens when FFL files are not present in mlc.
// seen in Sonic Lost World and in Super Mario 3D World
if ((uint32)surface->dim.value() >= 50 || surface->aa.value() >= 0x100 || (uint32)surface->width.value() >= 0x01000000 ||
(uint32)surface->height.value() >= 0x01000000 || (uint32)surface->depth.value() >= 0x01000000 || (uint32)surface->format.value() >= 0x10000)
{
cemuLog_log(LogType::Force, "GX2CalcSurfaceSizeAndAlignment(): Uninitialized surface encountered\n");
// overwrite surface parameters with placeholder values to avoid crashing later down the line
surface->dim = Latte::E_DIM::DIM_2D;
surface->width = 8;
surface->height = 8;
surface->depth = 1;
surface->tileMode = Latte::E_GX2TILEMODE::TM_2D_TILED_THIN1;
surface->pitch = 8;
surface->numLevels = 0;
surface->imagePtr = MEMORY_TILINGAPERTURE_AREA_ADDR;
surface->swizzle = 0;
surface->aa = 0;
surface->format = Latte::E_GX2SURFFMT::R8_G8_B8_A8_UNORM;
surface->alignment = 0x400;
}
}
void GX2CalcSurfaceSizeAndAlignment(GX2Surface* surface)
{
_GX2CalcSurfaceSizeAndAlignmentWorkaround(surface);
LatteAddrLib::AddrSurfaceInfo_OUT surfOut = { 0 };
uint32 firstMipOffset = 0;
bool changeTilemode = false;