* Use correct HALF_FLOAT constant for GLES
* Support GLTracer and GL debug in Android
* Support instancing in GLTracer
* Don't use unsupported TEXTURE_{BASE,MAX}_LEVEL in GLES
* Support ABGR8 using swizzle extension
* Move glFramebufferTextureLayer to GLFbo
* Avoid RGB111110F in filters unless its actually supported
* Use the same depth format in all places in FPP
* Print the object with the problem in NativeObjectManager
* JMException does not exist on Android
* Separate GLFbo and GLExt implementations. GLFbo can now be implemented either via vanilla OpenGL3 calls or GL_EXT_framebuffer_*** extensions (OpenGL2.1- only).
* Use modern way of getting supported extensions in core profile.
* Luminance and Alpha formats are not available when running in core profile.
* Bind a dummy vertex array object (VAO) when running in core profile.
* Point sprite mode is always enabled. Since both OpenGL ES 2.0 and OpenGL 3.2 core require it, jME3 is no longer capable of rendering regular points.
* this is required for pregenerated mipmaps in e.g. DDS files
* others checks are added to make sure a zero-length buffer cannot be uploaded (that's an error for now)
(so far only for lwjgl because I'm lazy)
Went ahead and added in divisor support while I was
at it because it doesn't cost anything and there might
be use-cases for it.
Mesh now knows about instances and you can directly
ask it for an instance count. I haven't added support
for proper bounding box calculation but it should
at least be possible now.
* All GL calls are done via static imports
* Once again remove dependency on GL21 / GL30 - with the generator it will be possible to choose whether to target GL2+extensions or GL3 core
* ContextCapabilities is field in Renderer, not allowed to use GLContext to retrieve it anymore
* Assume depth textures are always supported (they should be since GL1.4)
* Remove the sanity check from TextureUtil since it is now done once during initialization of the renderer.
* If LwjglRenderer.VALIDATE_SHADER is enabled, log shader compilation warnings as Level.WARNING instead of Level.FINE. Also slightly better grammar in shader compile / link messages.
* ARGB8 and BGRA8 formats now support sRGB -> linear conversion if sRGB pipeline is used, previously they were ignored.
* All float and half float formats are considered supported if we either support OpenGL 3 or ARB float texture.
* Cleanup TextureUtil a bit by removing constant references from ARBHalfFloatPixel, ARBTextureFloat, EXTPackedFloat, EXTTextureSharedExponent and EXTTextureSRGB to GL21 and GL30 classes (which are identical anyway).
* Check if we support sRGB textures before choosing sRGB format (although this check should have been done earlier? not sure..)
