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| author | Jonathan Liu <net147@gmail.com> | 2012-10-26 11:53:56 (GMT) |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2012-10-30 09:28:52 (GMT) |
| commit | c16471dd7aa6ce9b9768e70de66763f73584d880 (patch) | |
| tree | 6ca638e47df8c7ae8ea6b9316c1753c757209dfc /src/opengl | |
| parent | 292bfacd4f4420ba47b6aa0bd1d0686e02711845 (diff) | |
| download | Qt-c16471dd7aa6ce9b9768e70de66763f73584d880.zip Qt-c16471dd7aa6ce9b9768e70de66763f73584d880.tar.gz Qt-c16471dd7aa6ce9b9768e70de66763f73584d880.tar.bz2 | |
QGLTextureGlyphCache: Fix text rendering artifacts on NVIDIA
Check GL_VENDOR to test whether using NVIDIA graphics. On Linux,
GL_VERSION and GL_VENDOR contains "NVIDIA". On Windows, only
GL_VENDOR contains "NVIDIA".
Task-number: QTBUG-27658
Change-Id: I5e74d07ecb9522d1a86ac2953415a51bbdbe8c49
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
(cherry picked from qtbase/8900bc778f326e6b22ecfceb0b0b64394f3510fb)
Diffstat (limited to 'src/opengl')
| -rw-r--r-- | src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp index abf7b8d..4a01057 100644 --- a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp +++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp @@ -341,8 +341,8 @@ void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph, QFixed sub if (!ctx->d_ptr->workaround_brokenAlphaTexSubImage_init) { // don't know which driver versions exhibit this bug, so be conservative for now - const QByteArray versionString(reinterpret_cast<const char*>(glGetString(GL_VERSION))); - ctx->d_ptr->workaround_brokenAlphaTexSubImage = versionString.indexOf("NVIDIA") >= 0; + const QByteArray vendorString(reinterpret_cast<const char*>(glGetString(GL_VENDOR))); + ctx->d_ptr->workaround_brokenAlphaTexSubImage = vendorString.indexOf("NVIDIA") >= 0; ctx->d_ptr->workaround_brokenAlphaTexSubImage_init = true; } |