| commit | b11e2483742db884bd0af41f78f528240577356b | [log] [tgz] |
|---|---|---|
| author | Jamie Madill <jmadill@chromium.org> | Mon May 04 18:21:22 2015 |
| committer | Jamie Madill <jmadill@chromium.org> | Mon May 04 19:55:33 2015 |
| tree | 9ccc02886a6e6a6a66db7e3d1fcd1e89814946e4 | |
| parent | 6ba6eadce47bb9e304e06ac7b8ed15f73ad4bca9 [diff] |
translator: Fix validation sometimes modifying builtins. When validating some shaders with out-of-bounds array indexes, we would write the sanitized index into the global symbol table. We would then overwrite a wrong value for the builtin. This fixes the WebGL test extensions/webgl-draw-buffers-max-draw-buffers. Also mark const on as many uses ConstantUnion as we can. BUG=angleproject:993 Change-Id: I110efaf1b7b0158b08b704277e3bc2472437902c Reviewed-on: https://chromium-review.googlesource.com/268962 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Zhenyao Mo <zmo@chromium.org>
#ANGLE The goal of ANGLE is to allow Windows users to seamlessly run WebGL and other OpenGL ES content by translating OpenGL ES API calls to DirectX 9 or DirectX 11 API calls.
ANGLE is a conformant implementation of the OpenGL ES 2.0 specification that is hardware‐accelerated via Direct3D. ANGLE v1.0.772 was certified compliant by passing the ES 2.0.3 conformance tests in October 2011. ANGLE also provides an implementation of the EGL 1.4 specification. Work on ANGLE's OpenGL ES 3.0 implementation is currently in progress, but should not be considered stable.
ANGLE is used as the default WebGL backend for both Google Chrome and Mozilla Firefox on Windows platforms. Chrome uses ANGLE for all graphics rendering on Windows, including the accelerated Canvas2D implementation and the Native Client sandbox environment.
Portions of the ANGLE shader compiler are used as a shader validator and translator by WebGL implementations across multiple platforms. It is used on Mac OS X, Linux, and in mobile variants of the browsers. Having one shader validator helps to ensure that a consistent set of GLSL ES shaders are accepted across browsers and platforms. The shader translator can be used to translate shaders to other shading languages, and to optionally apply shader modifications to work around bugs or quirks in the native graphics drivers. The translator targets Desktop GLSL, Direct3D HLSL, and even ESSL for native GLES2 platforms.
##Building For building instructions, visit the dev setup wiki.
##Contributing