/// <summary>
/// Initializes the renderer.
/// </summary>
public void Initialize()
{
_renderContext.Initialize();
_colorShader = new ShaderProgram();
var vshader = new VertexShader();
vshader.Compile(SimpleVertexShader.SourceCode);
var fshader = new FragmentShader();
fshader.Compile(SimpleFragmentShader.SourceCode);
_colorShader.Link(vshader, fshader);
OpenGLInterops.Enable(OpenGLInterops.GL_BLEND);
OpenGLInterops.AlphaBlend();
SetTransform(Matrix2x3.Identity);
OpenGLColor clearColor = OpenGLHelper.ConvertColor(_graphicsDevice.ClearColor);
OpenGLInterops.ClearColor(clearColor);
_windowSize = _window.Size;
OpenGLInterops.Viewport(0, 0, (int) _windowSize.X, (int) _windowSize.Y);
_sourceVao = new VertexArray();
_sourceVao.Bind();
_colorShader.Bind();
_sourceEbo = new IndexBuffer();
var elements = new ushort[]
{
0, 1, 2,
2, 3, 0
};
_sourceEbo.Bind();
_sourceEbo.SetData(elements);
_sourceVbo = new VertexBuffer();
_sourceVbo.Bind();
_graphicsDevice.ClearColorChanged += GraphicsDeviceClearColorChanged;
_window.ScreenSizeChanged += WindowScreenSizeChanged;
}
/// <summary>
/// Links a vertex shader and a fragment shader to this program.
/// </summary>
/// <param name="vShader">The VertexShader.</param>
/// <param name="fShader">The FragmentShader.</param>
public void Link(VertexShader vShader, FragmentShader fShader)
{
OpenGLInterops.AttachShader(Id, vShader.Id);
OpenGLInterops.AttachShader(Id, fShader.Id);
OpenGLInterops.BindFragDataLocation(Id, 0, "outColor");
OpenGLInterops.LinkProgram(Id);
}