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Re: Porting to AmigaOS4 thread

Subject: Re: Porting to AmigaOS4 thread
by Raziel on 2020/11/24 12:58:04

@Capehill

I was rummaging through ScummVM's code and stumbled over these two instances regarding OpenGL.


#if !defined(AMIGAOS) && !defined(__MORPHOS__)

    if (renderToFrameBuffer) {

        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);

        _frameBuffer = createFramebuffer(_engineRequestedWidth, _engineRequestedHeight);

        _frameBuffer->attach();

    }

#endif

}


#if !defined(AMIGAOS) && !defined(__MORPHOS__)

OpenGL::FrameBuffer *OpenGLSdlGraphics3dManager::createFramebuffer(uint width, uint height) {

#if !defined(USE_GLES2)

    if (_antialiasing && OpenGLContext.framebufferObjectMultisampleSupported) {

        return new OpenGL::MultiSampleFrameBuffer(width, height, _antialiasing);

    } else

#endif

    {

        return new OpenGL::FrameBuffer(width, height);

    }

}

#endif // AMIGAOS

1) Does #if !defined mean that the platforms are excluded or included?
2) Shouldn't it be #if !defined(__amigaos4__)?
I though (AMIGAOS) was the old platform define for the classic 68k line?
3) What would happen if i change that to #if !defined(__amigaos4__)
Are those (excluded?) GL commands supported?
Could i get rid of this (exclusion?) completely?

Thank you very much