Response from AMD on the question of t_f_p support. Please review and indicate if compiz/unity is dependent on something this list shows as not supported?
---------------------------------- We support texture_from_pixmap in direct rendering mode (mutter uses this as we discussed before), and all of the limitations for direct rendering are the same as indirect rendering as far as I know, some of the limitations I know are: 1. Compiz can not run in direct mode, because we uses some X functions in our driver, like XOpenDisplay in ADL which will cause soft hang for compiz uses XGrabServer. 2. The spec allows: Accepted by the <Buffer> parameter of glXBindTexImageEXT and glXReleaseTexImageEXT: GLX_FRONT_LEFT_EXT 0x20DE GLX_FRONT_RIGHT_EXT 0x20DF GLX_BACK_LEFT_EXT 0x20E0 GLX_BACK_RIGHT_EXT 0x20E1 GLX_FRONT_EXT GLX_FRONT_LEFT_EXT GLX_BACK_EXT GLX_BACK_LEFT_EXT GLX_AUX0_EXT 0x20E2 GLX_AUX1_EXT 0x20E3 GLX_AUX2_EXT 0x20E4 GLX_AUX3_EXT 0x20E5 GLX_AUX4_EXT 0x20E6 GLX_AUX5_EXT 0x20E7 GLX_AUX6_EXT 0x20E8 GLX_AUX7_EXT 0x20E9 GLX_AUX8_EXT 0x20EA GLX_AUX9_EXT 0x20EB But we only support GLX_FRONT_LEFT_EXT now. 3. Applications can specify the texture format according to spec, but the pixmap format is BGRA in most of the time, so if app specifies non BGRA format, corruption will occur. Unfortunately compiz does like this. Current implementation is to use the format determined by depth internally regardless the app specified format. It seems that NV doesn't allow app to use GLX_TEXTURE_FORMAT_RGBA, and only GLX_TEXTURE_FORMAT_RGB is allowed, otherwise X error is reported. 4. X coordinate system are different from OpenGL coordinate system, we workaround the Y inverted issue currently, the difficulty is how to tell glTexImage2D and glTexSubImage2D about the Y inverted info when they are used by GLX_EXT_texture_from_pixmap. 5. No mipmap support, No TEXTURE_1D support ---------------------------------- ** Changed in: compiz (Ubuntu Natty) Status: New => Incomplete -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in ubuntu. https://bugs.launchpad.net/bugs/685682 Title: [fglrx] compiz crashed with SIGSEGV in nux::IOpenGLSurface::UnlockRect() _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp