HaxePunk/HaxePunk

package haxepunk.graphics.hardware.opengl;

import haxe.PosInfos;

@:dox(hide)
class GLUtils
{
    public static function bindTexture(texture:Texture, smooth:Bool, index:Int=GL.TEXTURE0)
    {
        GL.activeTexture(index);
        GLInternal.bindTexture(texture);
        if (smooth)
        {
            GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
            GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
        }
        else
        {
            GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
            GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
        }
        GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
        GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
    }

    public static inline function checkForErrors(?pos:PosInfos)
    {
        #if hxp_gl_debug
        var error = GL.getError();
        if (error != GL.NO_ERROR)
            throw "GL Error found at " + pos.fileName + ":" + pos.lineNumber + ": " + error;
        #else
        var error = GL.getError();
        if (error != GL.NO_ERROR)
            Log.error("GL Error found at " + pos.fileName + ":" + pos.lineNumber + ": " + error);
        #end
    }

    public static inline function invalid(obj:Any):Bool
    {
        return GLInternal.invalid(obj);
    }
}