tdf#100193: Check earlier and harder whether OpenGL is good enough on Windows

If we notice early enough that OpenGL is broken or not good enough, we
can disable it and terminate with EXITHELPER_NORMAL_RESTART. Not
beautiful, but works.

The earlier added check whether shader compilation and loading of
shader program binaries from a cached file works is now just one of
the aspects that are checked.

Change-Id: I9382576cc607f1916f6002f1fa78a62e23180fe3

1 files changed, 16 insertions, 1 deletions

diff --git a/vcl/source/opengl/OpenGLContext.cxx b/vcl/source/opengl/OpenGLContext.cxx
index 72cb1d61e6f8..4d3549509a57 100644
--- a/vcl/source/opengl/OpenGLContext.cxx
+++ b/vcl/source/opengl/OpenGLContext.cxx
@@ -282,8 +282,23 @@ bool OpenGLContext::InitGLEW()
             bGlewInit = true;
     }
 
-    VCL_GL_INFO("OpenGLContext::ImplInit----end");
+    VCL_GL_INFO("OpenGLContext::ImplInit----end, GL version: " << OpenGLHelper::getGLVersion());
     mbInitialized = true;
+
+    // I think we need at least GL 3.0
+    if (!GLEW_VERSION_3_0)
+    {
+        SAL_WARN("vcl.opengl", "We don't have at least OpenGL 3.0");
+        return false;
+    }
+
+    // Check that some "optional" APIs that we use unconditionally are present
+    if (!glBindFramebuffer)
+    {
+        SAL_WARN("vcl.opengl", "We don't have glBindFramebuffer");
+        return false;
+    }
+
     return true;
 }