Macros in QRhi shaders?

[hamer]

Hi,

I need different code paths in a shader, for example:

#ifdef QSHADER_GLSL
layout(location = 0) in vec2 a_pos;
#else
layout(location = 0) in ivec2 a_pos_int;
#endif

I know that it is possible to manually define defines:

qt6_add_shaders(my_target
    DEFINES "QSHADER_GLSL=true"
    FILES
        ...
)

But this way using qputenv("QSG_RHI_BACKEND", "opengl") does not work. Is there an alternative?

[hamer]

As usual, after asking the question, I found the answer myself. The key is to passPERTARGETCOMPILE to qt6_add_shaders.