зеркало из https://github.com/AvaloniaUI/angle.git
87 строки
2.1 KiB
Plaintext
87 строки
2.1 KiB
Plaintext
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Name
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ANGLE_prepare_swap_buffers
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Name Strings
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EGL_ANGLE_prepare_swap_buffers
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Contributors
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Jamie Madill
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Shahbaz Youssefi
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Lingfeng Yang
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Contacts
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Jamie Madill, Google Inc. (jmadill 'at' google.com)
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Shahbaz Youssefi, Google Inc. (syoussefi 'at' google.com)
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Lingfeng Yang, Google Inc. (lfy 'at' google.com)
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Status
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Draft
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Version
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Version 1, January 10, 2022
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Number
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EGL Extension #??
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Dependencies
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This extension is written against the wording of the EGL 1.5
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Specification.
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Overview
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The EGL implementation often relies on a swapchain to present backbuffer
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rendering results. Images are dequeued from the swapchain, then written in
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the course of rendering, and then queued back to the swapchain for
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presentation. It can be advantageous to provide a hint API that performs
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the dequeue operation and other operations necessary to prepare the
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swapchain image for rendering, without also queueing it for present,
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especially if there is going to be a long or variable wait associated with
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the dequeue. This extension provides that api, eglPrepareSwapBuffers.
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New Types
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None.
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New Procedures and Functions
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EGLBoolean eglPrepareSwapBuffersANGLE(
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EGLDisplay dpy,
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EGLSurface surface);
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New Tokens
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None
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Additions to the EGL 1.5 Specification
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Add the following to section 3.10.1 "Posting to a Window":
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An application can encourage the EGL implementation to dequeue and
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otherwise prepare a swapchain image earlier before presenting via calling
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EGLBoolean eglPrepareSwapBuffersANGLE(
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EGLDisplay dpy,
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EGLSurface surface);
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The behaviour of eglPrepareSwapBuffers can be a no-op. It is not necessary
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to call eglSwapBuffers after calling. Conversely, it's also not necessary
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to call eglPrepareSwapBuffersANGLE for eglSwapBuffers to work.
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Issues
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None yet.
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Revision History
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Rev. Date Author Changes
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---- ------------- --------- ----------------------------------------
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1 Jan 10, 2022 lfy Initial version
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