Now the #version string is added from Shader class itself, making it
possible to do workarounds for older versions more conveniently. As a
consequence, #version must not be part of shader source anymore.
Magnum.h now doesn't include anything except OpenGL headers, thus
changes in Math library don't trigger recompilation of everything, but
only of things really depending on it.
Math constants moved to separate file for similar reasons, de-inlined
some functions to remove the need for some #includes.
Desktop OpenGL and OpenGL ES 2 support can be switched using CMake
TARGET_GLES option. All functionality not supported in ES is marked in
documentation.
If targetting OpenGL ES, GLES2/gl2.h is included instead of GLEW.
Mesh class now uses VAOs only in desktop OpenGL, in ES the buffers are
bound on each draw call.
The class is now created always on the stack, so the user doesn't have
to delete it explicitly. It's now possible to write less verbose
shader code, instead of three lines before:
Shader* s = Shader::fromFile(Shader::Fragment, "Shader.frag");
attachShader(s);
// ...
delete s;
It's now only one:
attachShader(Shader::fromFile(Shader::Fragment, "Shader.frag"));