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Fix Hydra's jet thrusters not displaying due to an uninitialized variable in RwMatrix

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By B1ack_Wh1te

Fixes #57
This commit is contained in:
Silent 2024-10-31 19:07:22 +01:00
parent 9f705a3dc3
commit 3017790d44
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GPG key ID: AE53149BB0C45AF1
1 changed files with 53 additions and 0 deletions
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53
SilentPatchSA/SilentPatchSA.cpp
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@ -3210,6 +3210,30 @@ namespace NitrousReverseRechargeFix
}
// ============= Fix Hydra's jet thrusters not displaying due to an uninitialized variable in RwMatrix =============
// By B1ack_Wh1te
namespace JetThrustersFix
{
// These are technically CMatrix, but for simplicity we use RwMatrix here
template<std::size_t Index>
static RwMatrix* (*orgMatrixMultiply)(RwMatrix* out, const RwMatrix* lhs, const RwMatrix* rhs);
template<std::size_t Index>
static RwMatrix* MatrixMultiply_ZeroFlags(RwMatrix* out, const RwMatrix* lhs, const RwMatrix* rhs)
{
RwMatrix* result = orgMatrixMultiply<Index>(out, lhs, rhs);
// Technically, this should be the same as RwMatrixUpdate, but this variable is on the stack
// and completely uninitialized, so zero it completely for consistent results.
rwMatrixSetFlags(result, 0);
return result;
}
HOOK_EACH_INIT(MatrixMultiply, orgMatrixMultiply, MatrixMultiply_ZeroFlags);
}
// ============= LS-RP Mode stuff =============
namespace LSRPMode
{
@ -6411,6 +6435,16 @@ void Patch_SA_10(HINSTANCE hInstance)
}
// Fix Hydra's jet thrusters not displaying due to an uninitialized variable in RwMatrix
// By B1ack_Wh1te
{
using namespace JetThrustersFix;
std::array<uintptr_t, 4> matrixMult = { 0x6CA09F, 0x6CA122, 0x6CA1B2, 0x6CA242 };
HookEach_MatrixMultiply(matrixMult, InterceptCall);
}
#if FULL_PRECISION_D3D
// Test - full precision D3D device
Patch<uint8_t>( 0x7F672B+1, *(uint8_t*)(0x7F672B+1) | D3DCREATE_FPU_PRESERVE );
@ -8591,6 +8625,25 @@ void Patch_SA_NewBinaries_Common(HINSTANCE hInstance)
InjectHook(getGasPedal.get<void>(1), &NitrousControl_DontRechargeWhenReversing_NewBinaries, HookType::Call);
}
TXN_CATCH();
// Fix Hydra's jet thrusters not displaying due to an uninitialized variable in RwMatrix
// By B1ack_Wh1te
try
{
using namespace JetThrustersFix;
auto thrust = pattern("D9 5D DC E8 ? ? ? ? 83 C4 0C").count(4);
std::array<void*, 4> matrixMult = {
thrust.get(0).get<void>(3),
thrust.get(1).get<void>(3),
thrust.get(2).get<void>(3),
thrust.get(3).get<void>(3),
};
HookEach_MatrixMultiply(matrixMult, InterceptCall);
}
TXN_CATCH();
}