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119 lines
3.4 KiB
119 lines
3.4 KiB
Name
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CHROMIUM_bind_generates_resource
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Name Strings
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GL_CHROMIUM_bind_generates_resource
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Contributors
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Geoff Lang
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Contact
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Geoff Lang (geofflang 'at' google.com)
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Notice
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Copyright (c) 2016 The Khronos Group Inc. Copyright terms at
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http://www.khronos.org/registry/speccopyright.html
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Status
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Draft
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Version
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Version 1, September 19, 2016
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Number
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OpenGL ES Extension #??
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Dependencies
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Requires OpenGL ES 2.0
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Written against the OpenGL ES 2.0 specification.
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Overview
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This extension allows the user to control the behaviour when binding an
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object that has not been generated. This functionality is useful to
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notify the user of potential use-after-free errors or support other APIs
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such as WebGL on top of an OpenGL ES context.
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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 <cap> parameter to IsEnabled and the <pname> parameter to
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GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v:
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BIND_GENERATES_RESOURCE_CHROMIUM 0x9244
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Additions to the OpenGL ES Specification
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Add to the end of Section 2.9 "Buffer Objects":
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If BIND_GENERATES_RESOURCE_CHROMIUM is false, BindBuffer fails and an
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INVALID_OPERATION error is generated if buffer is not zero or a name
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returned from a previous call to GenBuffers, or if such a name has since
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been deleted with DeleteBuffers.
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Add to the end of Section 3.7.13 "Texture Objects":
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If BIND_GENERATES_RESOURCE_CHROMIUM is false, BindTexture fails and an
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INVALID_OPERATION error is generated if texture is not zero or a name
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returned from a previous call to GenTextures, or if such a name has since
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been deleted with DeleteTextures.
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Add to the end of Section 4.4.1 "Binding and Managing Framebuffer Objects":
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If BIND_GENERATES_RESOURCE_CHROMIUM is false, BindFramebuffer fails and an
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INVALID_OPERATION error is generated if framebuffer is not zero or a name
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returned from a previous call to GenFramebuffers, or if such a name has
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since been deleted with DeleteFramebuffers.
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Add to the end of Section 4.4.3 "Renderbuffer Objects":
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If BIND_GENERATES_RESOURCE_CHROMIUM is false, BindRenderbuffer fails and an
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INVALID_OPERATION error is generated if renderbuffer is not zero or a name
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returned from a previous call to GenRenderbuffers, or if such a name has
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since been deleted with DeleteRenderbuffers.
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New State
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Modify Table 6.22, Miscellaneous
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Add:
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Initial
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Get Value Type Get Command Value Description
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----------------------- ---- ----------- ------- --------------
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BIND_GENERATES_RESOURCE_CHROMIUM B IsEnabled TRUE Bind generates
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new resources
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Conformance Tests
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TBD
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Issues
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(1) Should the BIND_GENERATES_RESOURCE_CHROMIUM state be enabled at context
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creation time or dynamically through the Enable and Disable functions?
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RESOLOVED: BIND_GENERATES_RESOURCE_CHROMIUM is initialized by a context
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creation attribute and cannot be modified. One of the major use cases of
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this extension is to back WebGL contexts and the end user should not be
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allowed to modify this state.
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Revision History
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Rev. Date Author Changes
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---- ------------- --------- ----------------------------------------
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1 Sept 19, 2016 geofflang Initial version
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