Hash :
d68bf3e2
Author :
Date :
2019-12-04T12:30:56
Fix image/sampler uniform range in presence of atomic counters The change that introduced images to the front-end placed them at the end of the uniforms list, so the loop that was calculating the image range was starting from the end of that list. The change that introduced atomic counters to the front-end placed them at the end of the uniforms list too, but the image range loop was not adjusted to take this fact into account (neither was the sampler range loop for that matter). If a shader used both images and atomic counter buffers, the image range was calculated as empty. Similar issues would arise if the shader used both samplers and atomic counters. A test is added where a shader has a default uniform, a UBO, an SSBO, an image and an atomic counter, to make sure any combination of these resources doesn't result in a bug. Bug: angleproject:4190 Change-Id: I7818ee5258dd964215a18acfd7c3d6515b61c595 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1950655 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
The goal of ANGLE is to allow users of multiple operating systems to seamlessly run WebGL and other OpenGL ES content by translating OpenGL ES API calls to one of the hardware-supported APIs available for that platform. ANGLE currently provides translation from OpenGL ES 2.0 and 3.0 to desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Support for translation from OpenGL ES to Vulkan is underway, and future plans include compute shader support (ES 3.1) and MacOS support.
| Direct3D 9 | Direct3D 11 | Desktop GL | GL ES | Vulkan | Metal | |
|---|---|---|---|---|---|---|
| OpenGL ES 2.0 | complete | complete | complete | complete | complete | in progress |
| OpenGL ES 3.0 | complete | complete | complete | in progress | ||
| OpenGL ES 3.1 | in progress | complete | complete | in progress | ||
| OpenGL ES 3.2 | planned | planned | planned |
| Direct3D 9 | Direct3D 11 | Desktop GL | GL ES | Vulkan | Metal | |
|---|---|---|---|---|---|---|
| Windows | complete | complete | complete | complete | complete | |
| Linux | complete | complete | ||||
| Mac OS X | complete | in progress | ||||
| iOS | planned | |||||
| Chrome OS | complete | planned | ||||
| Android | complete | complete | ||||
| Fuchsia | in progress |
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.
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.
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