OpenGL linux fix, and removed some deprecated GL calls.

modules/juce_opengl/native/juce_OpenGL_android.h

@@ -63,7 +63,7 @@ public:
         glView.clear();
     }
 
-    void initialiseOnRenderThread() {}
+    void initialiseOnRenderThread (OpenGLContext&) {}
     void shutdownOnRenderThread() {}
 
     bool makeActive() const noexcept            { return isInsideGLCallback; }

modules/juce_opengl/native/juce_OpenGL_ios.h

@@ -97,7 +97,7 @@ public:
         [view release];
     }
 
-    void initialiseOnRenderThread() {}
+    void initialiseOnRenderThread (OpenGLContext&) {}
 
     void shutdownOnRenderThread()
     {

modules/juce_opengl/native/juce_OpenGL_linux.h

@@ -103,11 +103,11 @@ public:
             XFree (bestVisual);
     }
 
-    void initialiseOnRenderThread()
+    void initialiseOnRenderThread (OpenGLContext& context)
     {
         ScopedXLock xlock;
         renderContext = glXCreateContext (display, bestVisual, (GLXContext) contextToShareWith, GL_TRUE);
-        makeActive();
+        context.makeActive();
     }
 
     void shutdownOnRenderThread()

modules/juce_opengl/native/juce_OpenGL_osx.h

@@ -81,7 +81,7 @@ public:
         renderContext = nil;
     }
 
-    void initialiseOnRenderThread() {}
+    void initialiseOnRenderThread (OpenGLContext&) {}
     void shutdownOnRenderThread()               { deactivateCurrentContext(); }
 
     bool createdOk() const noexcept             { return getRawContext() != nullptr; }

modules/juce_opengl/native/juce_OpenGL_win32.h

@@ -81,7 +81,7 @@ public:
         releaseDC();
     }
 
-    void initialiseOnRenderThread() {}
+    void initialiseOnRenderThread (OpenGLContext&) {}
     void shutdownOnRenderThread()           { deactivateCurrentContext(); }
 
     static void deactivateCurrentContext()  { wglMakeCurrent (0, 0); }

modules/juce_opengl/opengl/juce_OpenGLContext.cpp

@@ -324,7 +324,8 @@ public:
         jassert (! cachedImageFrameBuffer.isValid());
 
         context.makeActive();
-        nativeContext->initialiseOnRenderThread();
+        nativeContext->initialiseOnRenderThread (context);
+
         glViewport (0, 0, component.getWidth(), component.getHeight());
 
         context.extensions.initialise();

modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp

@@ -1118,21 +1118,6 @@ public:
         target.makeActive();
         blendMode.resync();
         JUCE_CHECK_OPENGL_ERROR
-
-       #ifdef GL_COLOR_ARRAY
-        glDisableClientState (GL_COLOR_ARRAY);
-        glDisableClientState (GL_NORMAL_ARRAY);
-        glDisableClientState (GL_VERTEX_ARRAY);
-        glDisableClientState (GL_INDEX_ARRAY);
-
-        for (int i = 3; --i >= 0;)
-        {
-            activeTextures.setActiveTexture (i);
-            glDisableClientState (GL_TEXTURE_COORD_ARRAY);
-        }
-       #endif
-
-        JUCE_CHECK_OPENGL_ERROR
         activeTextures.clear();
         shaderQuadQueue.initialise();
         JUCE_CHECK_OPENGL_ERROR
@@ -1142,11 +1127,6 @@ public:
     {
         flush();
         target.context.extensions.glBindFramebuffer (GL_FRAMEBUFFER, previousFrameBufferTarget);
-
-       #if defined (GL_INDEX_ARRAY)
-        glDisableClientState (GL_INDEX_ARRAY);
-       #endif
-
         target.context.extensions.glBindBuffer (GL_ARRAY_BUFFER, 0);
         target.context.extensions.glBindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
     }