- initial version

git-svn-id: http://moon:8086/svn/software/trunk/projects/RBM@14 b431acfa-c32f-4a4a-93f1-934dc6c82436
2014-09-24 17:21:29 +00:00
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+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software Ltd.
+
+   Permission is granted to use this software under the terms of either:
+   a) the GPL v2 (or any later version)
+   b) the Affero GPL v3
+
+   Details of these licenses can be found at: www.gnu.org/licenses
+
+   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+#ifndef JUCE_OPENGLHELPERS_H_INCLUDED
+#define JUCE_OPENGLHELPERS_H_INCLUDED
+
+
+//==============================================================================
+/**
+    A set of miscellaneous openGL helper functions.
+*/
+class JUCE_API  OpenGLHelpers
+{
+public:
+    /** Clears the GL error state. */
+    static void resetErrorState();
+
+    /** Returns true if the current thread has an active OpenGL context. */
+    static bool isContextActive();
+
+    /** Clears the current context using the given colour. */
+    static void clear (Colour colour);
+
+    static void enableScissorTest (const Rectangle<int>& clip);
+
+    /** Checks whether the current context supports the specified extension. */
+    static bool isExtensionSupported (const char* extensionName);
+
+    /** Returns the address of a named GL extension function */
+    static void* getExtensionFunction (const char* functionName);
+
+    /** Makes some simple textual changes to a shader program to try to convert old GLSL
+        keywords to their v3 equivalents.
+
+        Before doing this, the function will check whether the current context is actually
+        using a later version of the language, and if not it will not make any changes.
+        Obviously this is not a real parser, so will only work on simple code!
+    */
+    static String translateVertexShaderToV3 (const String&);
+
+    /** Makes some simple textual changes to a shader program to try to convert old GLSL
+        keywords to their v3 equivalents.
+
+        Before doing this, the function will check whether the current context is actually
+        using a later version of the language, and if not it will not make any changes.
+        Obviously this is not a real parser, so will only work on simple code!
+    */
+    static String translateFragmentShaderToV3 (const String&);
+};
+
+
+#endif   // JUCE_OPENGLHELPERS_H_INCLUDED