/// <summary>
/// Construct a control display
/// </summary>
/// <param name="items">Items to store GL data to</param>
/// <param name="win">GLWindowControl to hook to</param>
/// <param name="mc">Matrix Calc to use</param>
/// <param name="depthtest">Enable depth test</param>
/// <param name="startz">Start Z for nearest top level window</param>
/// <param name="deltaz">Delta Z between each top level window</param>
/// <param name="arbbufferid">ARB buffer to use for texture bindless storage</param>
public GLControlDisplay(GLItemsList items, GLWindowControl win, GLMatrixCalc mc,
bool depthtest = true, // do depth testing or not
float startz = 0.001f, // z for the deepest window (only will apply if depth testing
float deltaz = 0.001f, // delta betwwen them
int arbbufferid = 10
) : base("displaycontrol", new Rectangle(0, 0, mc.ScreenCoordMax.Width, mc.ScreenCoordMax.Height))
{
glwin = win;
MatrixCalc = mc;
context = GLStatics.GetContext();
this.items = items;
vertexes = items.NewBuffer();
vertexarray = items.NewVertexArray();
vertexes.Bind(vertexarray, 0, 0, vertexesperentry * sizeof(float)); // bind to 0, from 0, 2xfloats. Must bind after vertexarray is made as its bound during construction
vertexarray.Attribute(0, 0, vertexesperentry, OpenTK.Graphics.OpenGL4.VertexAttribType.Float); // bind 0 on attr 0, 2 components per vertex
GLRenderState rc = GLRenderState.Tri();
rc.PrimitiveRestart = 0xff;
rc.DepthTest = depthtest;
this.startz = startz;
this.deltaz = deltaz;
ri = new GLRenderableItem(PrimitiveType.TriangleStrip, rc, 0, vertexarray); // create a renderable item
ri.CreateRectangleElementIndexByte(items.NewBuffer(), 255 / 5); // note this limits top level controls number to 255/5.
ri.DrawCount = 0; // nothing to draw at this point
shader = new GLShaderPipeline(new GLPLVertexShaderScreenTexture(), new GLPLFragmentShaderBindlessTexture(arbbufferid, true, discardiftransparent: true));
items.Add(shader);
textures = new Dictionary <GLBaseControl, GLTexture2D>();
size = new Dictionary <GLBaseControl, Size>();
visible = new Dictionary <GLBaseControl, bool>();
texturebinds = items.NewBindlessTextureHandleBlock(arbbufferid);
glwin.MouseMove += Gc_MouseMove;
glwin.MouseClick += Gc_MouseClick;
glwin.MouseDoubleClick += Gc_MouseDoubleClick;
glwin.MouseDown += Gc_MouseDown;
glwin.MouseUp += Gc_MouseUp;
glwin.MouseEnter += Gc_MouseEnter;
glwin.MouseLeave += Gc_MouseLeave;
glwin.MouseWheel += Gc_MouseWheel;
glwin.KeyDown += Gc_KeyDown;
glwin.KeyUp += Gc_KeyUp;
glwin.KeyPress += Gc_KeyPress;
glwin.Resize += Gc_Resize;
glwin.Paint += Gc_Paint;
suspendLayoutCount = 0;
}