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d3d8to9

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This is a pseudo-driver module that intends to improve compatibility and stability in games using Direct3D 8 for rendering by converting all API calls and low-level shaders to equivalent Direct3D 9 ones. By that it also opens those games to new possibilities from proven modding tools written for Direct3D 9, including ReShade.

Building

You'll need Visual Studio 2013 or higher to build d3d8to9. It is recommended to install the old standalone DirectX end-user runtime, which is required for the D3DX libraries used for disassembling and assembling the shaders.

A quick overview of what some of the source code files contain:

File Description
d3d8to9.cpp Definition of the main D3D8 entry point Direct3DCreate8
d3d8to9_base.cpp Implementation of the IDirect3D8 interface, including device creation
d3d8to9_device.cpp Implementation of the IDirect3DDevice8 interface, including shader conversion
d3d8types.hpp Declaration of all used D3D8 types one would otherwise find in d3d8.h
lookup_table.hpp Table to map D3D9 interface addresses to their matching D3D8 implementations

Contributing

Any contributions to the project are welcomed, it's recommended to use GitHub pull requests.

A big shout-out to all the existing contributors who worked on improving compatibility, especially elishacloud!

License

All source code in this repository is licensed under a BSD 2-clause license.

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A D3D8 pseudo-driver which converts API calls and bytecode shaders to equivalent D3D9 ones.

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