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//
// Copyright 2019 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#include "hdPrman/camera.h"
#include "RiTypesHelper.h" // XXX: Shouldn't rixStrings.h include this?
#include "hdPrman/rixStrings.h"
#include "pxr/imaging/hd/sceneDelegate.h"
#include "pxr/base/gf/vec2f.h"
#include "pxr/base/gf/camera.h"
#include "RtParamList.h"
PXR_NAMESPACE_OPEN_SCOPE
HdPrmanCamera::HdPrmanCamera(SdfPath const& id)
: HdCamera(id), _dirtyParams(false)
{
/* NOTHING */
}
HdPrmanCamera::~HdPrmanCamera()
{
}
/* virtual */
void
HdPrmanCamera::Sync(HdSceneDelegate *sceneDelegate,
HdRenderParam *renderParam,
HdDirtyBits *dirtyBits)
{
HD_TRACE_FUNCTION();
HF_MALLOC_TAG_FUNCTION();
if (!TF_VERIFY(sceneDelegate != nullptr)) {
return;
}
SdfPath const &id = GetId();
HdDirtyBits& bits = *dirtyBits;
if (bits & DirtyViewMatrix) {
sceneDelegate->SampleTransform(id, &_sampleXforms);
}
if (bits & DirtyParams) {
TfToken params[] = {
HdCameraTokens->horizontalAperture,
HdCameraTokens->verticalAperture,
HdCameraTokens->horizontalApertureOffset,
HdCameraTokens->verticalApertureOffset,
HdCameraTokens->focalLength,
HdCameraTokens->clippingRange,
HdCameraTokens->fStop,
HdCameraTokens->focusDistance,
HdCameraTokens->shutterOpen,
HdCameraTokens->shutterClose
};
for (TfToken const& param : params) {
VtValue val = sceneDelegate->GetCameraParamValue(id, param);
if (!val.IsEmpty()) {
_params[param] = val;
}
}
_dirtyParams = true;
}
HdCamera::Sync(sceneDelegate, renderParam, dirtyBits);
// XXX: Should we flip the proj matrix (RHS vs LHS) as well here?
// We don't need to clear the dirty bits since HdCamera::Sync always clears
// all the dirty bits.
}
/* virtual */
HdDirtyBits
HdPrmanCamera::GetInitialDirtyBitsMask() const
{
// Ensure that DirtyParams is also set.
return AllDirty;
}
bool
HdPrmanCamera::GetAndResetHasParamsChanged()
{
bool paramsChanged = _dirtyParams;
_dirtyParams = false;
return paramsChanged;
}
template <class T>
static const T*
_GetDictItem(const VtDictionary& dict, const TfToken& key)
{
const VtValue* v = TfMapLookupPtr(dict, key.GetString());
return v && v->IsHolding<T>() ? &v->UncheckedGet<T>() : nullptr;
}
void
HdPrmanCamera::SetRileyCameraParams(RtParamList& camParams,
RtParamList& projParams) const
{
// Following parameters can be set on the projection shader:
// fov (currently unhandled)
// fovEnd (currently unhandled)
// fStop
// focalLength
// focalDistance
float const *fStop =
_GetDictItem<float>(_params, HdCameraTokens->fStop);
if (fStop) {
// RenderMan defines disabled DOF as fStop=inf not zero
float const value = (*fStop <= 0) ? RI_INFINITY : *fStop;
projParams.SetFloat(RixStr.k_fStop, value);
}
float const *focalLength =
_GetDictItem<float>(_params, HdCameraTokens->focalLength);
if (focalLength) {
projParams.SetFloat(RixStr.k_focalLength, *focalLength);
}
float const *focusDistance =
_GetDictItem<float>(_params, HdCameraTokens->focusDistance);
if (focusDistance) {
projParams.SetFloat(RixStr.k_focalDistance, *focusDistance);
}
// Following parameters are currently set on the Riley camera:
// 'nearClip' (float): near clipping distance
// 'farClip' (float): near clipping distance
// 'shutterOpenTime' (float): beginning of normalized shutter interval
// 'shutterCloseTime' (float): end of normalized shutter interval
// Parameters that are not handled (and use their defaults):
// 'focusregion' (float):
// 'dofaspect' (float): dof aspect ratio
// 'apertureNSides' (int):
// 'apertureAngle' (float):
// 'apertureRoundness' (float):
// 'apertureDensity' (float):
// Parameter that is handled during Riley camera creation:
// Rix::k_shutteropening (float[8] [c1 c2 d1 d2 e1 e2 f1 f2): additional
// control points
GfRange1f const *clippingRange =
_GetDictItem<GfRange1f>(_params, HdCameraTokens->clippingRange);
if (clippingRange) {
camParams.SetFloat(RixStr.k_nearClip, clippingRange->GetMin());
camParams.SetFloat(RixStr.k_farClip, clippingRange->GetMax());
}
// XXX : Ideally we would want to set the proper shutter open and close,
// however we can not fully change the shutter without restarting
// Riley.
// double const *shutterOpen =
// _GetDictItem<double>(_params, HdCameraTokens->shutterOpen);
// if (shutterOpen) {
// camParams->SetFloat(RixStr.k_shutterOpenTime, *shutterOpen);
// }
// double const *shutterClose =
// _GetDictItem<double>(_params, HdCameraTokens->shutterClose);
// if (shutterClose) {
// camParams->SetFloat(RixStr.k_shutterCloseTime, *shutterClose);
// }
}
PXR_NAMESPACE_CLOSE_SCOPE