Hello; On Tue, 2010-09-14 at 08:40 +0200, ext Teemu Tuominen wrote: > Hi, > > At N900 adaptation team F2F meeting, someone mentioned missing or weird > looking objects with current Handset UI applications. I'm not the expert > in this area, but over year ago we had kind of similar issues with > slightly different Desktop OpenGL stacks that did not support combined > depth&stencil buffers. And Qt was unfortunately not covering the issue > with software or other available options. > > So, I started to wonder that if Qt's inner rendering stacks differ > between our devices, all developers dealing with the related bugs should > be aware of that in general - but where do we have this information ?
If I understood the problem statement correctly then answer is Qt source code, it would be nice to have a proper list of needed extensions and how they map to Qt internal functionality. Ideally Qt should not depend on the extensions but in practice at least some of the 'most popular' extensions tend to exist in drivers and one can safely depend on them. How about having this list in wiki somewhere? > > Well, hopefully the issue was just some cosmetic bug, but still such > info would help bug fixing and to understand performance comparisons better. > > I listed the GL extensions from Qt sources below, we could start by > bolding the ones in use for example. > So, if you are aware of these from the running Meego reference device > aspect, please point out the real situation. Probably some comparing of > differences to situation on ARM/GLES2. > I'm not even that familiar with GLES2 but I assume that the situation > with "GLES2-only" approach would lease the differences in applications > side (qt rendering) ? someone aware of the reality there, please comment. > > > GLX: > GLX_ARB_get_proc_address > GLX_SGI_video_sync > GLX_EXT_texture_from_pixmap > GLX_EXT_visual_info > GL: > GL_ARB_fragment_program > GL_ARB_multisample > GL_ARB_pixel_buffer_object > GL_ARB_texture_mirrored_repeat > GL_ARB_texture_non_power_of_two > GL_ARB_texture_rectangle > GL_EXT_bgra > GL_EXT_framebuffer_object > GL_EXT_framebuffer_blit > GL_EXT_stencil_two_side > GL_EXT_stencil_wrap > GL_EXT_texture_compression_s3tc > GL_SGIS_generate_mipmap > GL_NV_float_buffer > GL_EXT_packed_depth_stencil > > New in 4.7 > GL_OES_compressed_ETC1_RGB8_texture > GL_IMG_texture_compression_pvrtc > GL_ARB_fragment_program > GL_ARB_fragment_shader > GL_ARB_shader_objects > GL_ARB_ES2_compatibility > > > regards, > - Teemu > _______________________________________________ > MeeGo-dev mailing list > [email protected] > http://lists.meego.com/listinfo/meego-dev // Tapani _______________________________________________ MeeGo-dev mailing list [email protected] http://lists.meego.com/listinfo/meego-dev
