/// <summary>
/// Draw occlusion bounding box method with our premade effect and box.
/// </summary>
/// <param name="bbox"></param>
/// <param name="scale"></param>
/// <param name="enableDepthTesting"></param>
/// <param name="billboardLike">Indicates whether the occlusion object (box) is rotated to face the camera or not.</param>
public static void DrawOcclusionBoundingBox(BoundingBox bbox, float scale, bool enableDepthTesting, bool billboardLike = false, bool useDepthTarget = true)
{
useDepthTarget &= !MyRenderConstants.RenderQualityProfile.ForwardRender;
var cameraToBBox = bbox.GetCenter() - MyCamera.Position;
Matrix worldMatrix = billboardLike ? Matrix.CreateWorld(Vector3.Zero, MyMwcUtils.Normalize(cameraToBBox), MyMwcUtils.Normalize(MyCamera.UpVector + MyCamera.LeftVector)) : Matrix.Identity;
Vector3 scaleV = (bbox.Max - bbox.Min) * scale;
worldMatrix *= Matrix.CreateScale(scaleV);
worldMatrix.Translation = cameraToBBox;
MyEffectOcclusionQueryDraw effectOQ = MyRender.GetEffect(MyEffects.OcclusionQueryDrawMRT) as MyEffectOcclusionQueryDraw;
if (enableDepthTesting && !MyRenderConstants.RenderQualityProfile.ForwardRender)
{
effectOQ.SetTechnique(MyEffectOcclusionQueryDraw.Technique.DepthTestEnabled);
}
else
{
effectOQ.SetTechnique(MyEffectOcclusionQueryDraw.Technique.DepthTestDisabled);
}
effectOQ.SetWorldMatrix(worldMatrix);
effectOQ.SetViewMatrix(MyCamera.ViewMatrixAtZero);
effectOQ.SetProjectionMatrix(MyCamera.ProjectionMatrix);
if (useDepthTarget)
{
var depthRenderTarget = MyRender.GetRenderTarget(MyRenderTargets.Depth);
effectOQ.SetDepthRT(depthRenderTarget);
effectOQ.SetScale(MyRender.GetScaleForViewport(depthRenderTarget));
}
effectOQ.Begin();
//draw
m_modelBoxLowRes.Render();
effectOQ.End();
}
private void IssueSpotQuery()
{
if (((LightType & LightTypeEnum.Spotlight) > 0) && SpotQuery != null && SpotQueryState == QueryState.IssueOcc)
{
BlendState previousBlendState = BlendState.Current;;
MyStateObjects.DisabledColorChannels_BlendState.Apply();
// RasterizerState.CullNone.Apply();
// DepthStencilState.None.Apply();
MyEffectOcclusionQueryDraw effectOQ = MyRender.GetEffect(MyEffects.OcclusionQueryDrawMRT) as MyEffectOcclusionQueryDraw;
effectOQ.SetTechnique(MyEffectOcclusionQueryDraw.Technique.DepthTestEnabled);
MatrixD spotWorld = SpotWorld;
spotWorld.Translation = SpotWorld.Translation - MyRenderCamera.Position;
effectOQ.SetWorldMatrix((Matrix)spotWorld);
effectOQ.SetViewMatrix(MyRenderCamera.ViewMatrixAtZero);
effectOQ.SetProjectionMatrix(MyRenderCamera.ProjectionMatrix);
var depthRenderTarget = MyRender.GetRenderTarget(MyRenderTargets.Depth);
effectOQ.SetDepthRT(depthRenderTarget);
effectOQ.SetScale(MyRender.GetScaleForViewport(depthRenderTarget));
SpotQuery.Begin();
effectOQ.Begin();
MyDebugDraw.ModelCone.Render();
effectOQ.End();
SpotQuery.End();
SpotQueryState = QueryState.CheckOcc;
previousBlendState.Apply();
}
if (SpotQueryState == QueryState.WaitOcc)
{
SpotQueryState = QueryState.IssueOcc;
}
}
/// <summary>
/// Needs to have PrepareFastOcclusionBoundingBoxDraw() called first
/// </summary>
public static void FastOcclusionBoundingBoxDraw(BoundingBox bbox, float scale)
{
Vector3 scaleV = (bbox.Max - bbox.Min) * scale;
Matrix worldMatrix = Matrix.CreateScale(scaleV);
worldMatrix.Translation = bbox.GetCenter() - MyCamera.Position;
MyEffectOcclusionQueryDraw effectOQ = MyRender.GetEffect(MyEffects.OcclusionQueryDrawMRT) as MyEffectOcclusionQueryDraw;
effectOQ.SetWorldMatrix(worldMatrix);
effectOQ.SetTechnique(MyRenderConstants.RenderQualityProfile.ForwardRender ? MyEffectOcclusionQueryDraw.Technique.DepthTestDisabled : MyEffectOcclusionQueryDraw.Technique.DepthTestEnabled);
effectOQ.Begin();
//draw
m_modelBoxLowRes.Render();
MyPerformanceCounter.PerCameraDraw.TotalDrawCalls++;
effectOQ.End();
}