rotating_quad

This sample displays a rotating rectangle. It shows you how to use vertex buffers and shaders with a transformation matrix. The shaders were compiled with FXC.exe, the DirectX effects compiler, which is included in the DirectX SDK and the Windows Platform SDK.

The script build.bat only builds the executable. The necessary shader objects are included in this repository.

The shaders are defined in vs.code (vertex shader) and ps.code (pixel shader). Use the script build_all.bat to recompile the shaders and then build the executable. You must have FXC.exe installed and the variable FXC in the build_all.bat script must point to it. The script will then compile vs.code and ps.code into vs.object and ps.object object files. These object files are then converted to byte slices that are embedded in the Go code. This is done with the bin2go tool. This makes it unnecessary to load files at run-time, the shader object code is shipped with the executable.

For window creation this sample uses the Windows API. Direct3D needs a handle to the window it runs in so you need a method for setting this up. Other libraries that you can use include SDL2, Allen Dang's gform library and the walk library.

If you simply build this sample with go build the resulting program will keep a console window open while running. Use the build.bat to build instead, it passes the flag -H=windowsgui to the linker which gets rid of the console window.