drawScene
==================

.. js:function:: GPGPU.drawScene() 

    3D表示をします。

ソース
^^^^^^

.. code-block:: js

            drawScene() {
                var param = this.drawObj.onDraw();
    
                var pMatrix = mat4.create();
                mat4.perspective(45, this.canvas.width / this.canvas.height, 0.1, 100.0, pMatrix);
    
                var mvMatrix = mat4.create();
                mat4.identity(mvMatrix);
    
                mat4.translate(mvMatrix, [0.0, 0.0, this.drawParam.z]);
    
                mat4.rotate(mvMatrix, this.drawParam.xRot, [1, 0, 0]);
                mat4.rotate(mvMatrix, this.drawParam.yRot, [0, 1, 0]);
    
                var pmvMatrix = mat4.create();
                mat4.multiply(pMatrix, mvMatrix, pmvMatrix);
    
                var normalMatrix = mat3.create();
                mat4.toInverseMat3(mvMatrix, normalMatrix);
                mat3.transpose(normalMatrix);
    
                param.args["uPMVMatrix"] = pmvMatrix;
                param.args["uNMatrix"] = normalMatrix;
    
                this.compute(param);
    
                // 次の再描画でdrawSceneが呼ばれるようにする。
                window.requestAnimationFrame(this.drawScene.bind(this));
            }