Name ANDROID_framebuffer_target Name Strings EGL_ANDROID_framebuffer_target Contributors Jamie Gennis Contact Jamie Gennis, Google Inc. (jgennis 'at' google.com) Status Complete Version Version 1, September 20, 2012 Number EGL Extension #XXX Dependencies Requires EGL 1.0 This extension is written against the wording of the EGL 1.4 Specification Overview Android supports a number of different ANativeWindow implementations that can be used to create an EGLSurface. One implementation, which is used to send the result of performing window composition to a display, may have some device-specific restrictions. Because of this, some EGLConfigs may be incompatible with these ANativeWindows. This extension introduces a new boolean EGLConfig attribute that indicates whether the EGLConfig supports rendering to an ANativeWindow for which the buffers are passed to the HWComposer HAL as a framebuffer target layer. New Types None. New Procedures and Functions None. New Tokens Accepted by the parameter of eglGetConfigAttrib and the parameter of eglChooseConfig: EGL_FRAMEBUFFER_TARGET_ANDROID 0x3147 Changes to Chapter 3 of the EGL 1.4 Specification (EGL Functions and Errors) Section 3.4, Configuration Management, add a row to Table 3.1. Attribute Type Notes ------------------------------ ------- --------------------------- EGL_FRAMEBUFFER_TARGET_ANDROID boolean whether use as a HWComposer framebuffer target layer is supported Section 3.4, Configuration Management, add a row to Table 3.4. Attribute Default Selection Sort Sort Criteria Order Priority ------------------------------ ------------- --------- ----- -------- EGL_FRAMEBUFFER_TARGET_ANDROID EGL_DONT_CARE Exact None Section 3.4, Configuration Management, add a paragraph at the end of the subsection titled Other EGLConfig Attribute Descriptions. EGL_FRAMEBUFFER_TARGET_ANDROID is a boolean indicating whether the config may be used to create an EGLSurface from an ANativeWindow for which the buffers are to be passed to HWComposer as a framebuffer target layer. Section 3.4.1, Querying Configurations, change the last paragraph as follow EGLConfigs are not sorted with respect to the parameters EGL_BIND_TO_TEXTURE_RGB, EGL_BIND_TO_TEXTURE_RGBA, EGL_CONFORMANT, EGL_LEVEL, EGL_NATIVE_RENDERABLE, EGL_MAX_SWAP_INTERVAL, EGL_MIN_SWAP_INTERVAL, EGL_RENDERABLE_TYPE, EGL_SURFACE_TYPE, EGL_TRANSPARENT_TYPE, EGL_TRANSPARENT_RED_VALUE, EGL_TRANSPARENT_GREEN_VALUE, EGL_TRANSPARENT_BLUE_VALUE, and EGL_RECORDABLE_ANDROID. Issues Revision History #1 (Jamie Gennis, September 20, 2012) - Initial draft.