<![CDATA[Macros in QRhi shaders?]]>

<![CDATA[Macros in QRhi shaders?]]>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?

]]>https://forum.qt.io/topic/163092/macros-in-qrhi-shadersRSS for NodeThu, 05 Nov 2026 14:39:08 GMTThu, 28 Aug 2025 05:41:17 GMT60<![CDATA[Reply to Macros in QRhi shaders? on Thu, 28 Aug 2025 05:48:21 GMT]]>As usual, after asking the question, I found the answer myself. The key is to passPERTARGETCOMPILE to qt6_add_shaders.

]]>https://forum.qt.io/post/830949https://forum.qt.io/post/830949Thu, 28 Aug 2025 05:48:21 GMT