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-rw-r--r--src/opengl/qglextensions.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/opengl/qglextensions.cpp b/src/opengl/qglextensions.cpp
index 8e2bbd4..6aec8ae 100644
--- a/src/opengl/qglextensions.cpp
+++ b/src/opengl/qglextensions.cpp
@@ -255,6 +255,10 @@ bool qt_resolve_glsl_extensions(QGLContext *ctx)
glFramebufferTextureLayerEXT = (_glFramebufferTextureLayerEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureLayerEXT"));
glFramebufferTextureFaceEXT = (_glFramebufferTextureFaceEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureFaceEXT"));
+ // Must at least have the FragmentShader extension to continue.
+ if (!(QGLExtensions::glExtensions() & QGLExtensions::FragmentShader))
+ return false;
+
glCreateShader = (_glCreateShader) ctx->getProcAddress(QLatin1String("glCreateShader"));
if (glCreateShader) {
glShaderSource = (_glShaderSource) ctx->getProcAddress(QLatin1String("glShaderSource"));