public void RenderBeforeChildren(RenderEventArgs arg)
{
if (!this.IsInitialized)
{
this.Initialize();
}
var method = this.RenderUnit.Methods[0]; // the only render unit in this node.
ShaderProgram program = method.Program;
SingleLineModel lineModel = this.singleLineModel;
GlyphServer glyphServer = lineModel.GetGlyphServer();
Texture texture = glyphServer.GlyphsTexture;
if (texture != null)
{
program.SetUniform("glyphTexture", texture);
}
var viewport = new int[4];
GL.Instance.GetIntegerv((uint)GetTarget.Viewport, viewport);
ICamera camera = arg.Camera;
mat4 projection = camera.GetProjectionMatrix();
mat4 view = camera.GetViewMatrix();
mat4 model = this.GetModelMatrix();
program.SetUniform("mvpMat", projection * view * model);
program.SetUniform("screenSize", new ivec2(viewport[2], viewport[3]));
program.SetUniform("lineSize", new vec2(lineModel.LineWidth, lineModel.LineHeight));
program.SetUniform("textColor", this.textColor);
program.SetUniform("backgroundColor", Color.SkyBlue.ToVec4());
program.SetUniform("fontSize", this.fontSize);
method.Render();
}
private SingleLineNode(SingleLineModel model, params RenderMethodBuilder[] builders)
: base(model, builders)
{
this.singleLineModel = model;
}