public void render(Gui gui)
{
if (gui == null)
{
return;
}
shader.start();
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.Disable(EnableCap.DepthTest);
GL.BindVertexArray(GUIquad.vaoID);
GL.EnableVertexAttribArray(0);
var state = OpenTK.Input.Mouse.GetCursorState();
var mouse = Game.INSTANCE.PointToClient(new Point(state.X, state.Y));
gui.render(shader, mouse.X, mouse.Y);
GL.DisableVertexAttribArray(0);
GL.BindVertexArray(0);
GL.Enable(EnableCap.DepthTest);
shader.stop();
}
protected virtual void renderTexture(GuiShader shader, GuiTexture tex, Vector2 scale, int x, int y)
{
shader.start();
GL.BindVertexArray(GuiRenderer.GUIquad.vaoID);
GL.EnableVertexAttribArray(0);
var unit = new Vector2(1f / Game.INSTANCE.ClientSize.Width, 1f / Game.INSTANCE.ClientSize.Height);
float width = tex.textureSize.Width;
float height = tex.textureSize.Height;
float scaledWidth = width * scale.X;
float scaledHeight = height * scale.Y;
float posX = x + scaledWidth / 2;
float posY = -y - scaledHeight / 2;
var pos = new Vector2(posX, posY) * unit;
var mat = MatrixHelper.createTransformationMatrix(pos * 2 - Vector2.UnitX + Vector2.UnitY, scale * new Vector2(width, height) * unit);
shader.loadTransformationMatrix(mat);
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, tex.textureID);
GL.DrawArrays(shader.renderType, 0, 4);
GL.DisableVertexAttribArray(0);
GL.BindVertexArray(0);
shader.stop();
}