public void Render()
{
ImGui.NewFrame();
ImGui.ShowDemoWindow();
UI.UIImGui.Render();
ImGui.Render();
var data = ImGui.GetDrawData();
GraphicsContext graphicsContext = context.graphicsContext;
float L = data.DisplayPos.X;
float R = data.DisplayPos.X + data.DisplaySize.X;
float T = data.DisplayPos.Y;
float B = data.DisplayPos.Y + data.DisplaySize.Y;
float[] mvp =
{
2.0f / (R - L), 0.0f, 0.0f, 0.0f,
0.0f, 2.0f / (T - B), 0.0f, 0.0f,
0.0f, 0.0f, 0.5f, 0.0f,
(R + L) / (L - R), (T + B) / (B - T), 0.5f, 1.0f,
};
int index1 = context.uploadBuffer.Upload <float>(mvp);
graphicsContext.SetRootSignature(Pipeline12Util.FromString(context, "Cssss"));
graphicsContext.SetPipelineState(context.pipelineStateObjects["ImGui"], psoDesc);
context.uploadBuffer.SetCBV(graphicsContext, index1, 0);
graphicsContext.commandList.IASetPrimitiveTopology(Vortice.Direct3D.PrimitiveTopology.TriangleList);
Vector2 clip_off = data.DisplayPos;
for (int i = 0; i < data.CmdListsCount; i++)
{
var cmdList = data.CmdListsRange[i];
var vertBytes = cmdList.VtxBuffer.Size * sizeof(ImDrawVert);
var indexBytes = cmdList.IdxBuffer.Size * sizeof(ImDrawIdx);
context.uploadBuffer.UploadMesh(graphicsContext, imguiMesh, new Span <byte>(cmdList.VtxBuffer.Data.ToPointer(), vertBytes), new Span <byte>(cmdList.IdxBuffer.Data.ToPointer(), indexBytes), sizeof(ImDrawVert), Format.R16_UInt);
graphicsContext.SetMesh(imguiMesh);
for (int j = 0; j < cmdList.CmdBuffer.Size; j++)
{
var cmd = cmdList.CmdBuffer[j];
if (cmd.UserCallback != IntPtr.Zero)
{
throw new NotImplementedException("user callbacks not implemented");
}
else
{
graphicsContext.SetSRV(context.GetTexByStrId(cmd.TextureId), 0);
var rect = new Vortice.RawRect((int)(cmd.ClipRect.X - clip_off.X), (int)(cmd.ClipRect.Y - clip_off.Y), (int)(cmd.ClipRect.Z - clip_off.X), (int)(cmd.ClipRect.W - clip_off.Y));
graphicsContext.commandList.RSSetScissorRects(new[] { rect });
graphicsContext.DrawIndexedInstanced((int)cmd.ElemCount, 1, (int)(cmd.IdxOffset), (int)(cmd.VtxOffset), 0);
}
}
}
}
