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Resource: patch out forced texture streaming disable code

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If we do not have resident pages, then we can still rely on the GPU driven texture streaming system. However, this code forces the mode to TSM_OPMODE_LEGACY_PICMIP. This is a bug because it contradicts the ability to switch between the dynamic and static systems. Patched the jump from a conditional one to an unconditional one to always skip over this broken code.

This also ultimately drops the need for having a dummy STBSP file, and the benefit of not having a dummy STBSP file is that 'hasResidentPages' will be false, which disables the STBSP world texture crediting code, reducing frame times.
This commit is contained in:
Kawe Mazidjatari 2025-01-03 22:32:37 +01:00
parent 36d2b3534a
commit 5e0c24ad84
1 changed files with 7 additions and 0 deletions
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src/resource/patch/r5apex.patch
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@ -53,6 +53,13 @@
0x1E3CB6: "xor rax, rax" // NULL RAX instead of mov'ing '0xDEADFEEDDEADFEED' to cache ptr in 'Pak_UpdateModelAsset()'
0x1E3EE2: "xor rax, rax" // NULL RAX instead of mov'ing '0xDEADFEEDDEADFEED' to cache ptr in 'Pak_UpdateAnimRigAsset()'
// If we don't have an STBSP file, the field s_textureStreamMgr.hasResidentPages will be false. But if the texture
// stream manager is initialized and the stream mode is set to default, the code will force the stream mode to disabled.
// However, our engine has a working implementation of the GPU driven texture streaming system, and the correct thing
// to do here is to not force anything, since our SDK will enable the GPU driven texture streaming system if an STBSP
// file wasn't provided for the level. We turn the conditional jump to an unconditional jump here to skip this code.
0x3E0363: "EB 0F"
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//// Code defects ////