diff options
| -rw-r--r-- | src/gui/opengl/qopengltexturehelper.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/gui/opengl/qopengltexturehelper.cpp b/src/gui/opengl/qopengltexturehelper.cpp index 386c4af232..3635a7dd1b 100644 --- a/src/gui/opengl/qopengltexturehelper.cpp +++ b/src/gui/opengl/qopengltexturehelper.cpp @@ -40,8 +40,16 @@ QT_BEGIN_NAMESPACE QOpenGLTextureHelper::QOpenGLTextureHelper(QOpenGLContext *context) { - // Resolve EXT_direct_state_access entry points if present - if (!context->isOpenGLES() + // Resolve EXT_direct_state_access entry points if present. + + // However, disable it on some systems where DSA is known to be unreliable. + bool allowDSA = true; + const char *renderer = reinterpret_cast<const char *>(context->functions()->glGetString(GL_RENDERER)); + // QTBUG-40653, QTBUG-44988 + if (renderer && strstr(renderer, "AMD Radeon HD")) + allowDSA = false; + + if (allowDSA && !context->isOpenGLES() && context->hasExtension(QByteArrayLiteral("GL_EXT_direct_state_access"))) { TextureParameteriEXT = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , GLint )>(context->getProcAddress(QByteArrayLiteral("glTextureParameteriEXT"))); TextureParameterivEXT = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , const GLint *)>(context->getProcAddress(QByteArrayLiteral("glTextureParameterivEXT"))); |