/// <summary>
///
/// </summary>
/// <param name="arg"></param>
protected override void DoRender(RenderEventArgs arg)
{
// RULE: 用于渲染UI元素的模型，其范围最好是在(-0.5, -0.5, -0.5)到(-0.5, -0.5, -0.5)之间，即保持其边长为1，且位于坐标系中心。这样，就可以用mat4 model = glm.scale(mat4.identity(), new vec3(this.Size.Width, this.Size.Height, 1));来设定其缩放比例了。简单方便。
mat4 projection = this.GetOrthoProjection();
//vec3 position = (this.camera.Position - this.camera.Target).normalize();
mat4 view = glm.lookAt(new vec3(0, 0, 1), new vec3(0, 0, 0), new vec3(0, 1, 0));
//float length = Math.Max(glText.Size.Width, glText.Size.Height) / 2;
float length = this.Size.Height;// / 2;
mat4 model = glm.scale(mat4.identity(), new vec3(length, length, length));
//model = mat4.identity();
var renderer = this.Renderer as Renderer;
renderer.SetUniform("mvp", projection * view * model);
if (this.textColorRecord.IsMarked())
{
renderer.SetUniform("textColor", this.textColor);
this.textColorRecord.CancelMark();
}
blendSwitch.On();
base.DoRender(arg);
blendSwitch.Off();
}
protected override void DoRender(RenderEventArgs arg)
{
//mat4 projection, view, model;
//this.GetMatrix(out projection, out view, out model);
//this.SetUniformValue("mvp", projection * view * model);
blendSwitch.On();
base.DoRender(arg);
blendSwitch.Off();
}