Removed leftover FFP code: We should now be GL2 GLSL1.30+ forward compatible. Added a seperate shader for the gradient used for water drawing. Disabled 3D mode for GL2 codepath as this still has some FFP left.

#version 130

uniform sampler2D tex0;
uniform vec4 tint;

in vec2 tex;

out vec4 color;

void main()
{
    color = texture(tex0, tex) * tint;
}