kc3-lang/angle/extensions/ANGLE_webgl_compatibility.txt
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Hash : 22c9f779
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Date : 2021-10-05T08:53:12
Add shader targeting language to WebGL compat spec. Bug: angleproject:1687 Change-Id: Ia7e05b7ff4af995e5cb3e72584866bba8c1907a5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3205797 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>
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extensions/ANGLE_webgl_compatibility.txt
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Name ANGLE_webgl_compatibility Name Strings GL_ANGLE_webgl_compatibility Contributors Geoff Lang James Darpinian Contact Geoff Lang (geofflang 'at' google.com) Notice Copyright (c) 2016 The Khronos Group Inc. Copyright terms at http://www.khronos.org/registry/speccopyright.html Status Draft Version Version 4, October 5, 2021 Number OpenGL ES Extension #?? Dependencies Requires OpenGL ES 2.0 Written against the OpenGL ES 2.0 specification. Interacts with EGL_ANGLE_create_context_webgl_compatibility (or equivalent) extension. Interacts with the ARB_texture_rectangle/ANGLE_texture_rectangle extension. Overview With this extension enabled, the OpenGL ES context will have additional features and validation to be compatible with the WebGL specification. New Procedures and Functions None New Tokens None Additions to the OpenGL ES Specification Additional validation will be performed according to the the sections of the WebGL specification entitled "Differences Between WebGL and OpenGL ES 2.0" and "Differences Between WebGL and OpenGL ES 3.0". GLSL ES shaders targeting version 100 will be treated as though they were targeting the WebGL 1 shader specification, and GLSL ES shaders targeting version 300 as though they were targeting the WebGL 2 shader specification. When the ANGLE_texture_rectangle extension is supported then Enable, Disable, and IsEnabled accept the symbolic constant TEXTURE_RECTANGLE_ANGLE, which controls whether ARB_texture_rectangle is allowed to be used by shaders at compilation time. This is initially enabled. WebGL implementations may want to use ARB_texture_rectangle when compiling their own shaders but not expose the extension to WebGL user shaders. This only affects shader compilation and not any other part of the ANGLE_texture_rectangle extension, nor the behavior of already compiled shaders. New State None Conformance Tests TBD Issues None Revision History Rev. Date Author Changes ---- ------------- --------- ---------------------------------------- 1 Sept 16, 2016 geofflang Initial version 2 Nov 28, 2016 geofflang Break the extension requests into a separate extension. 3 Oct 3, 2019 jdarpinian Allow disabling ARB_texture_rectangle 4 Oct 5, 2021 jmadill Add wording for shader specs.