internal static unsafe void Render(MyRenderContext RC, IDepthStencil ds, IRtvBindable rtv)
{
bool debugDraw = MyRender11.Settings.DrawOcclusionQueriesDebug;
if (m_vb == null || m_tempBuffer2.Length < m_queries.Count)
{
int allocCount = System.Math.Max(m_queries.Count * 3 / 2, 32);
System.Diagnostics.Debug.Assert(allocCount < 256);
if (m_vb == null)
{
m_vb = VRage.Render11.Common.MyManagers.Buffers.CreateVertexBuffer("MyOcclusionQueryRenderer.VB", allocCount,
sizeof(MyVbConstantElement), usage: SharpDX.Direct3D11.ResourceUsage.Dynamic);
}
else
{
VRage.Render11.Common.MyManagers.Buffers.Resize(m_vb, allocCount);
}
m_tempBuffer = new MyVbConstantElement[allocCount];
m_tempBuffer2 = new MyOcclusionQuery[allocCount];
}
VRage.Profiler.ProfilerShort.Begin("Gather");
int ctr = 0;
float currentTime = MyCommon.TimerMs;
foreach (var item in m_queries)
{
Vector3 cameraPos = item.Position - MyRender11.Environment.Matrices.CameraPosition;
if (debugDraw)
{
item.LastResult = 0;
}
else
{
if (item.Running)
{
var result = item.Query.GetResult(false);
if (result != -1)
{
var dist = cameraPos.Length();
var viewPos = new Vector3(item.Size, item.Size, dist);
var projPos = Vector3.Transform(viewPos, MyRender11.Environment.Matrices.Projection);
var pixels = new Vector2(projPos.X, projPos.Y) * MyRender11.ResolutionF / 2;
var squared = System.Math.Abs(pixels.X * pixels.Y);
item.LastResult = System.Math.Min(result / squared, 1.0f);
item.NextQueryTime = currentTime + item.FreqMinMs + m_random.NextFloat() * item.FreqRndMs;
item.Running = false;
}
else
{
continue;
}
}
}
if (!item.Visible || currentTime < item.NextQueryTime)
{
continue;
}
item.Running = true;
var data = new MyVbConstantElement
{
Position = cameraPos,
Size = item.Size
};
m_tempBuffer2[ctr] = item.Query;
m_tempBuffer[ctr] = data;
ctr++;
item.Visible = false;
}
if (ctr > 0)
{
VRage.Profiler.ProfilerShort.BeginNextBlock("Setup");
RC.SetInputLayout(m_inputLayout);
RC.SetPrimitiveTopology(PrimitiveTopology.TriangleStrip);
RC.VertexShader.SetConstantBuffer(MyCommon.FRAME_SLOT, MyCommon.FrameConstants);
RC.SetRasterizerState(MyRasterizerStateManager.NocullRasterizerState);
RC.SetDepthStencilState(MyDepthStencilStateManager.DefaultDepthState);
RC.VertexShader.Set(m_vs);
if (debugDraw)
{
RC.PixelShader.Set(m_ps);
RC.SetRtv(ds, MyDepthStencilAccess.ReadOnly, rtv);
}
else
{
RC.SetRtv(ds, MyDepthStencilAccess.ReadOnly, null);
RC.PixelShader.Set(null);
}
VRage.Profiler.ProfilerShort.BeginNextBlock("Map");
MyMapping mappingVb = MyMapping.MapDiscard(RC, m_vb);
mappingVb.WriteAndPosition(m_tempBuffer, ctr);
mappingVb.Unmap();
RC.SetVertexBuffer(0, m_vb);
VRage.Profiler.ProfilerShort.BeginNextBlock("Render");
if (debugDraw)
{
for (int i = 0; i < ctr; i++)
{
RC.DrawInstanced(4, 1, 0, i);
}
}
else
{
for (int i = 0; i < ctr; i++)
{
m_tempBuffer2[i].Begin();
RC.DrawInstanced(4, 1, 0, i);
m_tempBuffer2[i].End();
}
}
}
VRage.Profiler.ProfilerShort.End();
RC.SetPrimitiveTopology(PrimitiveTopology.TriangleList);
}