2012-09-20 20:55:24 +00:00
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Name
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ANDROID_framebuffer_target
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Name Strings
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EGL_ANDROID_framebuffer_target
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Contributors
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Jamie Gennis
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Contact
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Jamie Gennis, Google Inc. (jgennis 'at' google.com)
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Status
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2012-11-29 23:58:45 +00:00
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Complete
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2012-09-20 20:55:24 +00:00
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Version
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Version 1, September 20, 2012
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Number
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2012-12-14 17:58:45 +00:00
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EGL Extension #47
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2012-09-20 20:55:24 +00:00
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Dependencies
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Requires EGL 1.0
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This extension is written against the wording of the EGL 1.4 Specification
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Overview
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Android supports a number of different ANativeWindow implementations that
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can be used to create an EGLSurface. One implementation, which is used to
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send the result of performing window composition to a display, may have
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some device-specific restrictions. Because of this, some EGLConfigs may
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be incompatible with these ANativeWindows. This extension introduces a
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new boolean EGLConfig attribute that indicates whether the EGLConfig
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supports rendering to an ANativeWindow for which the buffers are passed to
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the HWComposer HAL as a framebuffer target layer.
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New Types
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None.
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New Procedures and Functions
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None.
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New Tokens
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Accepted by the <attribute> parameter of eglGetConfigAttrib and
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the <attrib_list> parameter of eglChooseConfig:
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EGL_FRAMEBUFFER_TARGET_ANDROID 0x3147
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Changes to Chapter 3 of the EGL 1.4 Specification (EGL Functions and Errors)
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Section 3.4, Configuration Management, add a row to Table 3.1.
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Attribute Type Notes
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------------------------------ ------- ---------------------------
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EGL_FRAMEBUFFER_TARGET_ANDROID boolean whether use as a HWComposer
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framebuffer target layer is
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supported
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Section 3.4, Configuration Management, add a row to Table 3.4.
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Attribute Default Selection Sort Sort
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Criteria Order Priority
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------------------------------ ------------- --------- ----- --------
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EGL_FRAMEBUFFER_TARGET_ANDROID EGL_DONT_CARE Exact None
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Section 3.4, Configuration Management, add a paragraph at the end of the
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subsection titled Other EGLConfig Attribute Descriptions.
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EGL_FRAMEBUFFER_TARGET_ANDROID is a boolean indicating whether the
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config may be used to create an EGLSurface from an ANativeWindow for
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which the buffers are to be passed to HWComposer as a framebuffer
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target layer.
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Section 3.4.1, Querying Configurations, change the last paragraph as follow
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EGLConfigs are not sorted with respect to the parameters
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EGL_BIND_TO_TEXTURE_RGB, EGL_BIND_TO_TEXTURE_RGBA, EGL_CONFORMANT,
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EGL_LEVEL, EGL_NATIVE_RENDERABLE, EGL_MAX_SWAP_INTERVAL,
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EGL_MIN_SWAP_INTERVAL, EGL_RENDERABLE_TYPE, EGL_SURFACE_TYPE,
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EGL_TRANSPARENT_TYPE, EGL_TRANSPARENT_RED_VALUE,
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EGL_TRANSPARENT_GREEN_VALUE, EGL_TRANSPARENT_BLUE_VALUE, and
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EGL_RECORDABLE_ANDROID.
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Issues
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Revision History
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#1 (Jamie Gennis, September 20, 2012)
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- Initial draft.
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