draw the floor clockwise, as the vertices are defined. create a (for now functionally identical) fragment shader for the floor. temporarily disable the height component when drawing the floor
This also adds a specific fragement shader in addition to the floor vertex shader. Also, as sated in the commit message this changes the direction in which the indices are drawn to make things more readable.
As a free extra this also added a Windows batch file for compiling the shaders in addition to the UNIX/Linux shell script. This does not do match more than make the shader compiler run without any conditions or variables.