On Wed, Nov 5, 2014 at 9:02 AM, Michel Dänzer <mic...@daenzer.net> wrote: > On 05.11.2014 07:42, Marek Olšák wrote: >> >> Hi everybody, >> >> I'm about to address this long-standing issue: The EGL state tracker is >> redundant. It duplicates what st/dri does and it also duplicates what >> the common loader egl_dri2 does, which is used by all classic drivers >> and even works better with gallium drivers. >> >> Let's compare EGL extensions for both backends: >> >> st/egl: >> EGL version string: 1.4 (Gallium) >> EGL client APIs: OpenGL OpenGL_ES OpenGL_ES2 OpenVG >> EGL extensions string: >> EGL_WL_bind_wayland_display EGL_KHR_image_base EGL_KHR_image_pixmap >> EGL_KHR_image EGL_KHR_reusable_sync EGL_KHR_fence_sync >> EGL_KHR_surfaceless_context EGL_NOK_swap_region >> EGL_NV_post_sub_buffer >> >> egl_dri2: >> EGL version string: 1.4 (DRI2) >> EGL client APIs: OpenGL OpenGL_ES OpenGL_ES2 OpenGL_ES3 >> EGL extensions string: >> EGL_MESA_drm_image EGL_MESA_configless_context EGL_KHR_image_base >> EGL_KHR_image_pixmap EGL_KHR_image EGL_KHR_gl_texture_2D_image >> EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image >> EGL_KHR_surfaceless_context EGL_KHR_create_context >> EGL_NOK_swap_region EGL_NOK_texture_from_pixmap >> EGL_CHROMIUM_sync_control EGL_EXT_image_dma_buf_import >> EGL_NV_post_sub_buffer >> >> egl_dri2 also supports MSAA on the window framebuffer (through st/dri). >> It's really obvious which one is better. > > > No argument there. > > >> - OpenVG - It has never taken off. If people want this on Linux, it should >> use egl_dri2 and st/dri, like OpenGL does. > > > The problem is doing so would probably be a lot of work, so this creates a > huge barrier for somebody who wants to play with OpenVG. > > How about keeping egl_gallium but only using it if EGL_DRIVER=egl_gallium is > specified explicitly? (I assume automatically using egl_gallium for OpenVG > isn't possible due to the way EGL works)
Another alternative is to use a library which implements OpenVG on top of OpenGL. For example: - http://sourceforge.net/projects/shivavg/ - https://github.com/micahpearlman/MonkVG Marek _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev