Drawing3d.PrimIdObj[,] ReadPickingBuffer(int x, int y, int w, int h)
{
uint[,] Pixels = new uint[w, h];
Drawing3d.PrimIdObj[,] Result = new Drawing3d.PrimIdObj[w, h];
ShaderKind Save = Device.ShaderKind;
Device.ShaderKind = ShaderKind.SmallShader;
SnapBuffer.ReadPixel(x, y, Pixels);
for (int i = 0; i < w; i++)
{
for (int j = 0; j < h; j++)
{
Result[i, j].Object = (short)(Pixels[i, j] & 0XFFFF);
if (Result[i, j].Object != 0)
{
}
Result[i, j].PrimId = (short)(Pixels[i, j] >> 16);
if (Result[i, j].PrimId != 0)
{
}
}
}
Device.ShaderKind = Save;
return(Result);
}
//public void ReorgSnapBuffer()
//{
// if (SnapMesh != null)
// for (int i = 0; i < SnapMesh.Progs.Count; i++)
// {
// Mesh M = SnapMesh.Progs[i] as Mesh;
// if (M != null)
// {
// SnapItem S = M.SnapItem;
// M.ObjectNumber = StoredSnapItems.IndexOf(S);
// }
// SnapBufferDirty = true;
// }
//}
public void RefreshSnapBuffer()
{
if (!Device.SnapEnable)
{
return;
}
// if ((SnapKind == Snap.Static) && (SnapMesh == null))
{
SnapMesh = CompileSnapBuffer();
}
//GL.Disable(EnableCap.Blend);
//if (PickingShader == null)
//{
// PickingShader = new GLShader(PickingFragmentShader, PickingVertexShader);
// PickingShader.CompileAndLink();
// OpenGlDevice.CheckError();
//}
CurrentObjectIndex = PickingShader.GetVarHandle("TheObject");
GLShader Save = Device.Shader;
Device.Shader = PickingShader;
RenderKind SaveRenderKind = Device.RenderKind;
Device.RenderKind = RenderKind.SnapBuffer;
if (!RegisterLocked)
{
StoredSnapItems.Clear();
StoredSnapItems.Add(null);
}
SnapBuffer.Init((int)Device.ViewPort.Width, (int)Device.ViewPort.Height);
SnapBuffer.EnableWriting();
if (SnapMesh != null)
{
Device.Selector.FastRefresh = true;
System.Diagnostics.Stopwatch SW = new System.Diagnostics.Stopwatch();
SW.Start();
SnapMesh.Paint(Device);
SW.Stop();
Device.Selector.FastRefresh = false;
}
else
{
Device.OnPaint();
}
SnapBuffer.DisableWriting();
Device.RenderKind = SaveRenderKind;
SnapBufferDirty = false;
ObjectBuffer = ReadPickingBuffer(0, 0, (int)Device.ViewPort.Width, (int)Device.ViewPort.Height);
// GL.Enable(EnableCap.Blend);
Device.Shader = Save;
CreateSnapList();
}