protected override unsafe void CollectCore(RenderContext context)
{
var camera = context.GetCurrentCamera();
if (context.RenderView == null)
{
throw new NullReferenceException(nameof(context.RenderView) + " is null. Please make sure you have your camera correctly set.");
}
// Setup pixel formats for RenderStage
using (context.SaveRenderOutputAndRestore())
{
// Mark this view as requiring shadows
shadowMapRenderer?.RenderViewsWithShadows.Add(context.RenderView);
context.RenderOutput = new RenderOutputDescription(PostEffects != null ? PixelFormat.R16G16B16A16_Float : context.RenderOutput.RenderTargetFormat0, DepthBufferFormat, MSAALevel);
CollectStages(context);
if (VRSettings.Enabled && VRSettings.VRDevice != null)
{
Vector3 cameraPos, cameraScale;
Matrix cameraRot;
if (!vrSystem.PreviousUseCustomViewMatrix)
{
camera.Entity.Transform.WorldMatrix.Decompose(out cameraScale, out cameraRot, out cameraPos);
}
else
{
camera.ViewMatrix.Decompose(out cameraScale, out cameraRot, out cameraPos);
cameraRot.Transpose();
Vector3.Negate(ref cameraPos, out cameraPos);
Vector3.TransformCoordinate(ref cameraPos, ref cameraRot, out cameraPos);
}
if (VRSettings.IgnoreCameraRotation)
{
cameraRot = Matrix.Identity;
}
// Compute both view and projection matrices
Matrix *viewMatrices = stackalloc Matrix[2];
Matrix *projectionMatrices = stackalloc Matrix[2];
for (var i = 0; i < 2; ++i)
{
VRSettings.VRDevice.ReadEyeParameters(i == 0 ? Eyes.Left : Eyes.Right, camera.NearClipPlane, camera.FarClipPlane, ref cameraPos, ref cameraRot, VRSettings.IgnoreDeviceRotation, VRSettings.IgnoreDevicePosition, out viewMatrices[i], out projectionMatrices[i]);
}
// if the VRDevice disagreed with the near and far plane, we must re-discover them and follow:
var near = projectionMatrices[0].M43 / projectionMatrices[0].M33;
var far = near * (-projectionMatrices[0].M33 / (-projectionMatrices[0].M33 - 1));
if (Math.Abs(near - camera.NearClipPlane) > 1e-8f)
{
camera.NearClipPlane = near;
}
if (Math.Abs(near - camera.FarClipPlane) > 1e-8f)
{
camera.FarClipPlane = far;
}
// Compute a view matrix and projection matrix that cover both eyes for shadow map and culling
ComputeCommonViewMatrices(context, viewMatrices, projectionMatrices);
var commonView = context.RenderView;
// Notify lighting system this view only purpose is for shared lighting, it is not being drawn directly.
commonView.Flags |= RenderViewFlags.NotDrawn;
// Collect now, and use result for both eyes
CollectView(context);
context.VisibilityGroup.TryCollect(commonView);
for (var i = 0; i < 2; i++)
{
using (context.PushRenderViewAndRestore(VRSettings.RenderViews[i]))
using (context.SaveViewportAndRestore())
{
context.RenderSystem.Views.Add(context.RenderView);
context.RenderView.SceneInstance = commonView.SceneInstance;
context.RenderView.LightingView = commonView;
context.ViewportState.Viewport0 = new Viewport(0, 0, VRSettings.VRDevice.ActualRenderFrameSize.Width / 2.0f, VRSettings.VRDevice.ActualRenderFrameSize.Height);
//change camera params for eye
camera.ViewMatrix = viewMatrices[i];
camera.ProjectionMatrix = projectionMatrices[i];
camera.UseCustomProjectionMatrix = true;
camera.UseCustomViewMatrix = true;
camera.Update();
//write params to view
SceneCameraRenderer.UpdateCameraToRenderView(context, context.RenderView, camera);
// Copy culling results
context.VisibilityGroup.Copy(commonView, context.RenderView);
CollectView(context);
LightShafts?.Collect(context);
PostEffects?.Collect(context);
}
}
if (VRSettings.VRDevice.SupportsOverlays)
{
foreach (var overlay in VRSettings.Overlays)
{
if (overlay != null && overlay.Texture != null)
{
overlay.Overlay.Position = overlay.LocalPosition;
overlay.Overlay.Rotation = overlay.LocalRotation;
overlay.Overlay.SurfaceSize = overlay.SurfaceSize;
overlay.Overlay.FollowHeadRotation = overlay.FollowsHeadRotation;
}
}
}
}
else
{
//write params to view
SceneCameraRenderer.UpdateCameraToRenderView(context, context.RenderView, camera);
CollectView(context);
LightShafts?.Collect(context);
PostEffects?.Collect(context);
}
// Set depth format for shadow map render stages
// TODO: This format should be acquired from the ShadowMapRenderer instead of being fixed here
foreach (var shadowMapRenderStage in ShadowMapRenderStages)
{
if (shadowMapRenderStage != null)
{
shadowMapRenderStage.Output = new RenderOutputDescription(PixelFormat.None, PixelFormat.D32_Float);
}
}
}
PostEffects?.Collect(context);
}
protected override unsafe void CollectCore(RenderContext context)
{
var camera = context.GetCurrentCamera();
if (context.RenderView == null)
{
throw new NullReferenceException(nameof(context.RenderView) + " is null. Please make sure you have your camera correctly set.");
}
// Setup pixel formats for RenderStage
using (context.SaveRenderOutputAndRestore())
{
// Mark this view as requiring shadows
shadowMapRenderer?.RenderViewsWithShadows.Add(context.RenderView);
context.RenderOutput = new RenderOutputDescription(context.RenderOutput.RenderTargetFormat0, DepthBufferFormat, MSAALevel);
CollectStages(context);
if (VRSettings.Enabled && VRSettings.VRDevice != null)
{
Matrix *viewMatrices = stackalloc Matrix[2];
Matrix *projectionMatrices = stackalloc Matrix[2];
// only update the camera once, if we have multiple forward renderers on the same camera
ulong poseCount = VRSettings.VRDevice.PoseCount;
if (poseCount == 0 || poseCount != camera.VRProjectionPose)
{
camera.VRProjectionPose = poseCount;
Vector3 cameraPos, cameraScale;
Matrix cameraRot;
VRSettings.VRDevice.UpdatePositions(context.Time);
if (camera.VRHeadSetsTransform)
{
if (camera.Entity.Transform.Parent != null)
{
camera.Entity.Transform.Parent.WorldMatrix.Decompose(out cameraScale, out cameraRot, out cameraPos);
}
else
{
cameraPos = Vector3.Zero;
cameraScale = Vector3.One;
cameraRot = Matrix.Identity;
}
// make sure camera position gets body scale
camera.Entity.Transform.Position = VRSettings.VRDevice.HeadPosition * VRSettings.VRDevice.BodyScaling;
camera.Entity.Transform.Rotation = VRSettings.VRDevice.HeadRotation;
}
else
{
if (!vrSystem.PreviousUseCustomViewMatrix)
{
camera.Entity.Transform.WorldMatrix.Decompose(out cameraScale, out cameraRot, out cameraPos);
}
else
{
camera.ViewMatrix.Decompose(out cameraScale, out cameraRot, out cameraPos);
cameraRot.Transpose();
Vector3.Negate(ref cameraPos, out cameraPos);
Vector3.TransformCoordinate(ref cameraPos, ref cameraRot, out cameraPos);
}
if (VRSettings.IgnoreCameraRotation)
{
// only remove the local rotation of the camera
cameraRot *= Matrix.RotationQuaternion(Quaternion.Invert(camera.Entity.Transform.Rotation));
}
}
// Compute both view and projection matrices
for (var i = 0; i < 2; ++i)
{
VRSettings.VRDevice.ReadEyeParameters(i == 0 ? Eyes.Left : Eyes.Right, camera.NearClipPlane, camera.FarClipPlane, ref cameraPos, ref cameraRot, VRSettings.IgnoreDeviceRotation, VRSettings.IgnoreDevicePosition, out viewMatrices[i], out projectionMatrices[i]);
}
// cache these projection values
if (camera.cachedVRProjections == null)
{
camera.cachedVRProjections = new Matrix[4];
}
camera.cachedVRProjections[0] = viewMatrices[0];
camera.cachedVRProjections[1] = viewMatrices[1];
camera.cachedVRProjections[2] = projectionMatrices[0];
camera.cachedVRProjections[3] = projectionMatrices[1];
// if the VRDevice disagreed with the near and far plane, we must re-discover them and follow:
var near = projectionMatrices[0].M43 / projectionMatrices[0].M33;
var far = near * (-projectionMatrices[0].M33 / (-projectionMatrices[0].M33 - 1));
if (Math.Abs(near - camera.NearClipPlane) > 1e-8f)
{
camera.NearClipPlane = near;
}
if (Math.Abs(near - camera.FarClipPlane) > 1e-8f)
{
camera.FarClipPlane = far;
}
}
else
{
// already calculated this camera, use the cached information
viewMatrices[0] = camera.cachedVRProjections[0];
viewMatrices[1] = camera.cachedVRProjections[1];
projectionMatrices[0] = camera.cachedVRProjections[2];
projectionMatrices[1] = camera.cachedVRProjections[3];
}
// Compute a view matrix and projection matrix that cover both eyes for shadow map and culling
ComputeCommonViewMatrices(context, viewMatrices, projectionMatrices);
var commonView = context.RenderView;
// Notify lighting system this view only purpose is for shared lighting, it is not being drawn directly.
commonView.Flags |= RenderViewFlags.NotDrawn;
// Collect now, and use result for both eyes
CollectView(context);
context.VisibilityGroup.TryCollect(commonView);
for (var i = 0; i < 2; i++)
{
using (context.PushRenderViewAndRestore(VRSettings.RenderViews[i]))
using (context.SaveViewportAndRestore())
{
context.RenderSystem.Views.Add(context.RenderView);
context.RenderView.LightingView = commonView;
context.ViewportState.Viewport0 = new Viewport(0, 0, VRSettings.VRDevice.ActualRenderFrameSize.Width / 2.0f, VRSettings.VRDevice.ActualRenderFrameSize.Height);
//change camera params for eye
camera.ViewMatrix = viewMatrices[i];
camera.ProjectionMatrix = projectionMatrices[i];
camera.UseCustomProjectionMatrix = true;
camera.UseCustomViewMatrix = true;
camera.Update();
//write params to view
SceneCameraRenderer.UpdateCameraToRenderView(context, context.RenderView, camera);
// Copy culling results
context.VisibilityGroup.Copy(commonView, context.RenderView);
CollectView(context);
LightShafts?.Collect(context);
PostEffects?.Collect(context);
}
}
}
else
{
//write params to view
SceneCameraRenderer.UpdateCameraToRenderView(context, context.RenderView, camera);
CollectView(context);
LightShafts?.Collect(context);
PostEffects?.Collect(context);
}
// Set depth format for shadow map render stages
// TODO: This format should be acquired from the ShadowMapRenderer instead of being fixed here
foreach (var shadowMapRenderStage in ShadowMapRenderStages)
{
if (shadowMapRenderStage != null)
{
shadowMapRenderStage.Output = new RenderOutputDescription(PixelFormat.None, PixelFormat.D32_Float);
}
}
}
PostEffects?.Collect(context);
}