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Refactor IIDX camhook texture replacement (#424)

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## Link to GitHub Issue, if one exists
Fixes #393 

## Description of change
- Fixes compatibility with IIDX 33
- Adjusts the pattern scan for "hook A" to be compatible with IIDX 27
- Refactors texture replacement to use Camera::CCameraManager2, removing
the need for a second hook

Related: https://github.com/aixxe/2dxcamhook/compare/0.4.0.0...0.5.0.0

## Testing
Booted with `-iidxcamhook` on IIDX 27, 28, 29, 30, 31, 32 & 33
Confirmed both cameras were visible in I/O test, music select settings &
gameplay
This commit is contained in:
aixxe
2025-11-17 09:21:39 +00:00
committed by GitHub
parent 052698afa3
commit 4c87078807
4 changed files with 112 additions and 83 deletions
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src/spice2x/games/iidx/local_camera.h
+27 -5
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@@ -66,6 +66,25 @@ extern std::string CAMERA_CONTROL_LABELS[];
extern std::string DRAW_MODE_LABELS[];
namespace games::iidx {
namespace Camera {
struct PlayVideoCamera {
IDirect3DTexture9** d3d9_texture(const uintptr_t offset) {
auto const afp_texture = *reinterpret_cast<uint8_t**>
(reinterpret_cast<uint8_t*>(this) + offset);
return reinterpret_cast<IDirect3DTexture9**>(afp_texture + 0x8);
}
};
struct CCameraManager2 {
using camera_pointers = struct {
PlayVideoCamera* a;
PlayVideoCamera* b;
};
void* vftbl;
camera_pointers* cameras;
};
}
class IIDXLocalCamera {
protected:
virtual ~IIDXLocalCamera() {};
@@ -98,8 +117,9 @@ namespace games::iidx {
// DirectX9 DeviceEx
LPDIRECT3DDEVICE9EX m_device;
// Address to hook camera texture onto the game
LPDIRECT3DTEXTURE9 *m_texture_target = nullptr;
// Address to hook camera textures onto the game
LPDIRECT3DTEXTURE9 *m_camera_texture_target = nullptr;
LPDIRECT3DTEXTURE9 *m_preview_texture_target = nullptr;
// Target texture (to be shown in the game)
LPDIRECT3DTEXTURE9 m_texture = nullptr;
@@ -117,8 +137,9 @@ namespace games::iidx {
LPDIRECT3DTEXTURE9 m_transformResultTexture = nullptr;
IDirect3DSurface9 *m_pTransformResultSurf = nullptr;
// Storing original texture for clean up
LPDIRECT3DTEXTURE9 m_texture_original = nullptr;
// Storing original textures for clean up
LPDIRECT3DTEXTURE9 m_camera_texture_original = nullptr;
LPDIRECT3DTEXTURE9 m_preview_texture_original = nullptr;
IAMCameraControl *m_pCameraControl = nullptr;
@@ -154,7 +175,8 @@ namespace games::iidx {
IMFActivate *pActivate,
IDirect3DDeviceManager9 *pD3DManager,
LPDIRECT3DDEVICE9EX device,
LPDIRECT3DTEXTURE9 *texture_target
LPDIRECT3DTEXTURE9 *camera_texture_target,
LPDIRECT3DTEXTURE9 *preview_texture_target
);
LPDIRECT3DTEXTURE9 GetTexture();
ULONG Release();