void OnRenderObject()
{
_motionVectorMaterial.SetMatrix("_PreviousM", _previousModelMatrix);
_motionVectorMaterial.SetMatrix("_PreviousVP", CameraMatrixProvider.GetPreviousVPMatrix(Camera.current));
_motionVectorMaterial.SetMatrix("_NonJitteredVP", CameraMatrixProvider.GetVPMatrix(Camera.current));
_commandBuffer.Clear();
_commandBuffer.SetRenderTarget(BuiltinRenderTextureType.MotionVectors, BuiltinRenderTextureType.CameraTarget);
_commandBuffer.DrawMesh(_mesh, transform.localToWorldMatrix, _motionVectorMaterial, 0, 0);
Graphics.ExecuteCommandBuffer(_commandBuffer);
}
void DrawMotionVectors(ScriptableRenderContext context, Camera camera)
{
if (motionVectorsRT == null)
{
// TODO: initializing to 1920x1080 because dynamic scale doesn't work
motionVectorsRT = RTHandles.Alloc(new Vector2(1920, 1080), TextureXR.slices,
colorFormat: GraphicsFormat.R32G32_SFloat, depthBufferBits: DepthBits.None,
dimension: TextureDimension.Tex2D, useDynamicScale: true, name: "MotionVectors");
buffer.SetGlobalTexture("_MotionVectors", motionVectorsRT);
}
if (motionVectorsDepthRT == null)
{
// TODO: initializing to 1920x1080 because dynamic scale doesn't work
motionVectorsDepthRT = RTHandles.Alloc(new Vector2(1920, 1080), TextureXR.slices,
colorFormat: GraphicsFormat.None, depthBufferBits: DepthBits.Depth32,
dimension: TextureDimension.Tex2D, useDynamicScale: true, name: "MotionVectorsDepth", filterMode: FilterMode.Bilinear);
motionVectorsDepthPrevRT = RTHandles.Alloc(new Vector2(1920, 1080), TextureXR.slices,
colorFormat: GraphicsFormat.R32_SFloat, depthBufferBits: DepthBits.None,
dimension: TextureDimension.Tex2D, useDynamicScale: true, name: "MotionVectorsDepthPrev", filterMode: FilterMode.Bilinear);
buffer.SetGlobalTexture("_MotionVectorsDepth", motionVectorsDepthRT);
buffer.SetGlobalTexture("_MotionVectorsDepthPrev", motionVectorsDepthPrevRT);
}
// swap depth
buffer.Blit(motionVectorsDepthPrevRT, motionVectorsDepthPrevRT, motionVecsCopyDepthMat);
buffer.SetRenderTarget(motionVectorsRT, motionVectorsDepthRT);
buffer.ClearRenderTarget(true, true, Color.clear);
buffer.SetGlobalMatrix("_PreviousVP", CameraMatrixProvider.GetPreviousVPMatrix(camera));
buffer.SetGlobalMatrix("_NonJitteredVP", CameraMatrixProvider.GetVPMatrix(camera));
foreach (var component in MotionVectorData.instances)
{
var materialProps = new MaterialPropertyBlock();
materialProps.SetMatrix("_PreviousM", component.previousModelMatrix);
buffer.DrawMesh(component.mesh, component.transform.localToWorldMatrix, motionVectorMat, 0, 0, materialProps);
}
buffer.SetRenderTarget(BuiltinRenderTextureType.CameraTarget);
ExecuteBuffer(context, camera);
}
