GitLab

* ShaderProgramControlAutoFiles now only tries to (re)load geometry and tessellation shaders if
  they are supported
* desktop support is checked at runtime, OpenGL ES does not compile support for these stages at all

ShaderProgramControlAutoFiles only tries to load shader files other than .vsh and .fsh if they actually exist; also try to load tessellation control (.tcsh) / evaluation (.tesh) shaders

* OpenGL 4.1 style glProgramUniform functions are provided as mappings
  from an extension or emulation
* mapping functions now consider OpenGL ES and native support for iOS 5
* ShaderProgram uses glProgramUniform instead of the EXT version like
  in OpenGL 4.1
* Easy to query OpenGL version numbers in OpenGL::Tools added
* clean up in ACGL::init()
* namespaces in the extension file

-Added member to the Attribute struct (VertexBufferObject) in order to save the index of the attribute within the shader
-VertexBufferObjectControl and VertexBufferObjectControlFileOBJ can now do the mapping based on a shaderProgram assigned to them

-By assigning the shader to the FrameBufferObject Controller you can now assign the FragmentData Targets in a different order.

* Added support for direct state access based uniform setting in the ShaderProgram
* functions from the EXT_direct_state_access extension can get emulated if the extension is not present
  in this case ACGL will map the simulated versions automatically to the *EXT function pointers
  so a programmer can just call the *EXT versions and doesn't have to care if the machine the code
  will get run on does support this extension (as long a simulated version already exists)
* not all functions have emulated version right now, so check if an alternative exists before relying on
  functions from this extension in ACGL lib or implement the missing simulation function to support
  machines without this extension
* all glProgramUniform functions can be emulated (plus some others that were quick to implement)
* dummy functions for all other simulation functions exist

-Created the RenderObject from the State. The RenderObject now only composes VBOs, SPOs and FBOs and automatically creates the right mappings between them.
-Removed the pre processor from the shader class, since we now only work with the gl getters to retrieve any locations (uniform, attribute, fragdata).
-The ShaderProgram controllers have the possibility to define the order of the attributes manually (so the programmer can work with conventions).

* OpenGL error checking level can now be set via cmake
* OpenGL header configuration works better with external defines via cmake
* OpenGL version gets checked at runtime in the ACGL::init function and complains it the version it was compiled for is not present

-Added SPOs to the state object

-Modified Controller.hh to add the include path to ViewportControl.hh
-Modified Viewport.hh to use GLint for the offset and GLsizei for the size
-Modified Managers.hh to have a typedef ViewportNameManager

- VertexBuffer and FrameBuffer renamed to VertexBufferObject and FrameBufferObject respectively. This convention is more consistent regarding the State, which now gets a FrameBufferObject (FBO), VertexBufferObject (VBO) and ShaderProgramObject (SPO)
- Added controllers and objects to the Controller.hh and Objects.hh respectively
- Added corresponding managers

-State::enableFrameBuffer() -> State::bindFrameBuffer()
-Added State::useViewport()
-Added Viewport::use()
-Added VertexBuffer::enable() VertexBuffer::disable()
-Modified VertexBuffer::render to be inline and just call enable() draw() disable()

-Changed the state controller forcing the user to specify the needed pointers

Validation methods have been added VertexBuffer::validate() and FrameBuffer::validate().
These are called by State::validate()