commit | 6b5038e764ccb2e80764f066790a52e2b7bd6f4c | [log] [tgz] |
---|---|---|
author | Nicolas Capens <capn@google.com> | Wed Mar 14 17:15:39 2018 -0400 |
committer | Nicolas Capens <nicolascapens@google.com> | Thu Mar 15 01:58:53 2018 +0000 |
tree | 20764cfe52c91427c84def116fb5e581cac7b07d | |
parent | 2f113e3e8d420ab760fb697196f202765d78f7c6 [diff] |
Fix glTexSubImage support of half-float extension formats. GL_HALF_FLOAT_OES and GL_HALF_FLOAT have different enum values, and we weren't handling the case where a half-float texture was already created (e.g. with an effective internal format of GL_RGBA16F) and then updated with a glTexSubImage call using GL_HALF_FLOAT_OES type. In other words, we assumed the OpenGL ES 3.0 sized internal format could only be used with the OpenGL ES 3.0 half-float type, but this hasn't been true since we started storing only the effective internal format for all versions. Note that GL_OES_texture_half_float, which defines GL_HALF_FLOAT_OES, does not clarify whether HALF_FLOAT images can be updated using FLOAT, or vice-versa. We're assuming the equivalent combinations of OpenGL ES 3.0 table 3.3 are valid. That is, FLOAT can be used to update, HALF_FLOAT, but not the other way around. Bug b/74609191 Change-Id: Ib8548cd37065820eb59a0943fd39647edc5e9f1b Reviewed-on: https://swiftshader-review.googlesource.com/17748 Tested-by: Nicolas Capens <nicolascapens@google.com> Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com>
SwiftShader is a high-performance CPU-based implementation of the OpenGL ES and Direct3D 9 graphics APIs12. Its goal is to provide hardware independence for advanced 3D graphics.
The SwiftShader libraries act as drop-in replacements for graphics drivers.
On Windows, most applications can be made to use SwiftShader's DLLs by placing them in the same folder as the executable. On Linux, the LD_LIBRARY_PATH environment variable or -rpath linker option can be used to direct applications to search for shared libraries in the indicated directory first.
Prebuilt binaries can be found at: https://goo.gl/5MOcdb
See CONTRIBUTING.txt for important contributing requirements.
The canonical repository for SwiftShader is hosted at: https://swiftshader.googlesource.com/SwiftShader
All changes must be reviewed and approved in the Gerrit review tool at: https://swiftshader-review.googlesource.com
Authenticate your account here: https://swiftshader-review.googlesource.com/new-password
All changes require a Change-ID tag in the commit message. A commit hook may be used to add this tag automatically, and can be found at: https://gerrit-review.googlesource.com/tools/hooks/commit-msg. To clone the repository and install the commit hook in one go:
git clone https://swiftshader.googlesource.com/SwiftShader && (cd SwiftShader && curl -Lo `git rev-parse --git-dir`/hooks/commit-msg https://gerrit-review.googlesource.com/tools/hooks/commit-msg ; chmod +x `git rev-parse --git-dir`/hooks/commit-msg)
Changes are uploaded to Gerrit by performing:
git push origin HEAD:refs/for/master
The third_party directory contains projects which originated outside of SwiftShader:
LLVM contains an outdated and diverged copy of the LLVM compiler framework. Until further notice, maintenance fixes can be made directly in the SwiftShader repository.
subzero contains a fork of the Subzero project. It is part of Google Chrome‘s (Portable) Native Client project. Its authoritative source is at https://chromium.googlesource.com/native_client/pnacl-subzero/. The fork was made using git-subtree to include all of Subzero’s history, and until further notice it should not diverge from the upstream project. Contributions must be tested using the README instructions, reviewed at https://chromium-review.googlesource.com, and then pulled into the SwiftShader repository.
llvm-subzero contains a minimized set of LLVM dependencies of the Subzero project.
PowerVR_SDK contains a subset of the PowerVR Graphics Native SDK for running several sample applications.
googletest contains the Google Test project, as a Git submodule. It is used for running unit tests for Chromium, and Reactor unit tests. Run git submodule update --init
to obtain/update the code. Any contributions should be made upstream.
See docs/Index.md.
Public mailing list: swiftshader@googlegroups.com
Bug tracker: https://bugs.chromium.org/p/swiftshader
The SwiftShader project is licensed under the Apache License Version 2.0. You can find a copy of it in LICENSE.txt.
Files in the third_party folder are subject to their respective license.
The legal authors for copyright purposes are listed in AUTHORS.txt.
CONTRIBUTORS.txt contains a list of names of individuals who have contributed to SwiftShader. If you‘re not on the list, but you’ve signed the Google CLA and have contributed more than a formatting change, feel free to request to be added.