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d3d8ltcg: add D3DDevice_GetBackBuffer_8__LTCG_eax1 patch

This commit is contained in:
RadWolfie 2025-07-22 21:36:42 -05:00
parent d02afcd668
commit f7fb1c854a
3 changed files with 60 additions and 6 deletions
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50
src/core/hle/D3D8/Direct3D9/Direct3D9.cpp
View File

@ -304,6 +304,7 @@ g_EmuCDPD;
XB_MACRO(xbox::void_xt, WINAPI, D3DDevice_DeleteVertexShader, (xbox::dword_xt) ); \
XB_MACRO(xbox::void_xt, WINAPI, D3DDevice_DeleteVertexShader_0__LTCG_eax1, () ); \
XB_MACRO(xbox::void_xt, WINAPI, D3DDevice_GetBackBuffer, (xbox::int_xt, D3DBACKBUFFER_TYPE, xbox::X_D3DSurface**) ); \
XB_MACRO(xbox::void_xt, WINAPI, D3DDevice_GetBackBuffer_8__LTCG_eax1, (D3DBACKBUFFER_TYPE, xbox::X_D3DSurface**) ); \
XB_MACRO(xbox::X_D3DSurface*, WINAPI, D3DDevice_GetBackBuffer2, (xbox::int_xt) ); \
XB_MACRO(xbox::X_D3DSurface*, WINAPI, D3DDevice_GetBackBuffer2_0__LTCG_eax1, () ); \
XB_MACRO(xbox::hresult_xt, WINAPI, D3DDevice_GetDepthStencilSurface, (xbox::X_D3DSurface**) ); \
@ -3889,6 +3890,15 @@ xbox::X_D3DSurface* CxbxrImpl_GetBackBuffer2
if (XB_TRMP(D3DDevice_GetBackBuffer) != nullptr) {
XB_TRMP(D3DDevice_GetBackBuffer)(BackBuffer, D3DBACKBUFFER_TYPE_MONO, &pXboxBackBuffer);
}
else if (XB_TRMP(D3DDevice_GetBackBuffer_8__LTCG_eax1) != nullptr) {
__asm {
lea eax, pXboxBackBuffer
push eax
push D3DBACKBUFFER_TYPE_MONO
mov eax, BackBuffer
call XB_TRMP(D3DDevice_GetBackBuffer_8__LTCG_eax1)
}
}
else if (XB_TRMP(D3DDevice_GetBackBuffer2) != nullptr) {
pXboxBackBuffer = XB_TRMP(D3DDevice_GetBackBuffer2)(BackBuffer);
}
@ -3896,7 +3906,7 @@ xbox::X_D3DSurface* CxbxrImpl_GetBackBuffer2
__asm {
mov eax, BackBuffer
call XB_TRMP(D3DDevice_GetBackBuffer2_0__LTCG_eax1)
mov pXboxBackBuffer, eax
mov pXboxBackBuffer, eax
}
}
@ -3995,14 +4005,48 @@ __declspec(naked) xbox::X_D3DSurface* WINAPI xbox::EMUPATCH(D3DDevice_GetBackBuf
// ******************************************************************
xbox::void_xt WINAPI xbox::EMUPATCH(D3DDevice_GetBackBuffer)
(
int_xt BackBuffer,
int_xt BackBuffer,
D3DBACKBUFFER_TYPE Type,
X_D3DSurface **ppBackBuffer
)
{
LOG_FORWARD("D3DDevice_GetBackBuffer2");
*ppBackBuffer = CxbxrImpl_GetBackBuffer2(BackBuffer);
*ppBackBuffer = CxbxrImpl_GetBackBuffer2(BackBuffer);
}
// ******************************************************************
// * patch: D3DDevice_GetBackBuffer_8__LTCG_eax1
// ******************************************************************
// Overload for logging
static void D3DDevice_GetBackBuffer_8__LTCG_eax1()
{
LOG_FORWARD("D3DDevice_GetBackBuffer2");
}
// Test case: NBA 2K2
// This uses a custom calling convention where parameter is passed in EAX
__declspec(naked) xbox::void_xt WINAPI xbox::EMUPATCH(D3DDevice_GetBackBuffer_8__LTCG_eax1)
(
D3DBACKBUFFER_TYPE Type,
X_D3DSurface **ppBackBuffer
)
{
int_xt BackBuffer;
__asm {
LTCG_PROLOGUE
mov BackBuffer, eax
}
// Log
D3DDevice_GetBackBuffer_8__LTCG_eax1();
*ppBackBuffer = CxbxrImpl_GetBackBuffer2(BackBuffer);
__asm {
LTCG_EPILOGUE
ret 8
}
}
bool GetHostRenderTargetDimensions(DWORD *pHostWidth, DWORD *pHostHeight, IDirect3DSurface* pHostRenderTarget = nullptr)

15
src/core/hle/D3D8/Direct3D9/Direct3D9.h
View File

@ -309,9 +309,18 @@ X_D3DSurface* WINAPI EMUPATCH(D3DDevice_GetBackBuffer2_0__LTCG_eax1)();
// ******************************************************************
xbox::void_xt WINAPI EMUPATCH(D3DDevice_GetBackBuffer)
(
int_xt BackBuffer,
D3DBACKBUFFER_TYPE Type,
X_D3DSurface **ppBackBuffer
int_xt BackBuffer,
D3DBACKBUFFER_TYPE Type,
X_D3DSurface **ppBackBuffer
);
// ******************************************************************
// * patch: D3DDevice_GetBackBuffer_8__LTCG_eax1
// ******************************************************************
xbox::void_xt WINAPI EMUPATCH(D3DDevice_GetBackBuffer_8__LTCG_eax1)
(
D3DBACKBUFFER_TYPE Type,
X_D3DSurface **ppBackBuffer
);
// ******************************************************************

1
src/core/hle/Patches.cpp
View File

@ -90,6 +90,7 @@ std::map<const std::string, const xbox_patch_t> g_PatchTable = {
PATCH_ENTRY("D3DDevice_EndVisibilityTest_0__LTCG_eax1", xbox::EMUPATCH(D3DDevice_EndVisibilityTest_0__LTCG_eax1), PATCH_HLE_D3D),
PATCH_ENTRY("D3DDevice_FlushVertexCache", xbox::EMUPATCH(D3DDevice_FlushVertexCache), PATCH_HLE_D3D),
PATCH_ENTRY("D3DDevice_GetBackBuffer", xbox::EMUPATCH(D3DDevice_GetBackBuffer), PATCH_HLE_D3D),
PATCH_ENTRY("D3DDevice_GetBackBuffer_8__LTCG_eax1", xbox::EMUPATCH(D3DDevice_GetBackBuffer_8__LTCG_eax1), PATCH_HLE_D3D),
PATCH_ENTRY("D3DDevice_GetBackBuffer2", xbox::EMUPATCH(D3DDevice_GetBackBuffer2), PATCH_HLE_D3D),
PATCH_ENTRY("D3DDevice_GetBackBuffer2_0__LTCG_eax1", xbox::EMUPATCH(D3DDevice_GetBackBuffer2_0__LTCG_eax1), PATCH_HLE_D3D),
PATCH_ENTRY("D3DDevice_GetDisplayFieldStatus", xbox::EMUPATCH(D3DDevice_GetDisplayFieldStatus), PATCH_HLE_D3D),