diff options
Diffstat (limited to 'src/gui/opengl/qopenglshaderprogram.cpp')
| -rw-r--r-- | src/gui/opengl/qopenglshaderprogram.cpp | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/gui/opengl/qopenglshaderprogram.cpp b/src/gui/opengl/qopenglshaderprogram.cpp index 41d53be31e..9714aa4bec 100644 --- a/src/gui/opengl/qopenglshaderprogram.cpp +++ b/src/gui/opengl/qopenglshaderprogram.cpp @@ -525,7 +525,8 @@ bool QOpenGLShader::compileSourceCode(const char *source) // The precision qualifiers are useful on OpenGL/ES systems, // but usually not present on desktop systems. - const QSurfaceFormat currentSurfaceFormat = QOpenGLContext::currentContext()->format(); + QOpenGLContext *ctx = QOpenGLContext::currentContext(); + const QSurfaceFormat currentSurfaceFormat = ctx->format(); QOpenGLContextPrivate *ctx_d = QOpenGLContextPrivate::get(QOpenGLContext::currentContext()); if (currentSurfaceFormat.renderableType() == QSurfaceFormat::OpenGL || ctx_d->workaround_missingPrecisionQualifiers @@ -545,10 +546,16 @@ bool QOpenGLShader::compileSourceCode(const char *source) } #endif - // Append #line directive in order to compensate for text insertion - QByteArray lineDirective = QStringLiteral("#line %1\n").arg(versionDirectivePosition.line).toUtf8(); - sourceChunks.append(lineDirective.constData()); - sourceChunkLengths.append(GLint(lineDirective.length())); + QByteArray lineDirective; + // #line is rejected by some drivers: + // "2.1 Mesa 8.1-devel (git-48a3d4e)" or "MESA 2.1 Mesa 8.1-devel" + const char *version = reinterpret_cast<const char *>(ctx->functions()->glGetString(GL_VERSION)); + if (!version || !strstr(version, "2.1 Mesa 8")) { + // Append #line directive in order to compensate for text insertion + lineDirective = QStringLiteral("#line %1\n").arg(versionDirectivePosition.line).toUtf8(); + sourceChunks.append(lineDirective.constData()); + sourceChunkLengths.append(GLint(lineDirective.length())); + } // Append rest of shader code sourceChunks.append(source + versionDirectivePosition.position); |