<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED NOTOURBUG - GL_ALPHA_BITS set to non-zero with EGL_PLATFORM_GBM_MESA" href="https://bugs.freedesktop.org/show_bug.cgi?id=109330#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED NOTOURBUG - GL_ALPHA_BITS set to non-zero with EGL_PLATFORM_GBM_MESA" href="https://bugs.freedesktop.org/show_bug.cgi?id=109330">bug 109330</a> from <a class="email" href="mailto:daniel@fooishbar.org" title="Daniel Stone <daniel@fooishbar.org>"> Daniel Stone</a> <pre>Yeah, I think it's reasonable. The render target is XRGB8888, and X really does mean undefined, including 'throw content away on render' and 'invent fake content on sample'. I'd suggest allocating the gbm_surface as GBM_SURFACE_ARGB8888, then taking those BOs and passing DRM_FORMAT_XRGB8888 to AddFB2. This is totally safe to do, and will ensure that drivers preserve the alpha channel when you write out. (I was going to say about matching EGL_NATIVE_VISUAL_ID as well given your short example, but you already do that properly - nice!)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>