void
HdStreamTaskController::_CreateLightingTasks()
{
// Simple lighting task uses lighting state from Sprims.
_simpleLightTaskId = GetControllerId().AppendChild(
_tokens->simpleLightTask);
HdxSimpleLightTaskParams simpleLightParams;
simpleLightParams.cameraPath = _cameraId;
GetRenderIndex()->InsertTask<HdxSimpleLightTask>(&_delegate,
_simpleLightTaskId);
_delegate.SetParameter(_simpleLightTaskId, HdTokens->params,
simpleLightParams);
_delegate.SetParameter(_simpleLightTaskId, HdTokens->children,
SdfPathVector());
_simpleLightBypassTaskId = GetControllerId().AppendChild(
_tokens->simpleLightBypassTask);
// Simple lighting bypass task uses lighting state from a lighting
// context.
HdxSimpleLightBypassTaskParams simpleLightBypassParams;
simpleLightBypassParams.cameraPath = _cameraId;
GetRenderIndex()->InsertTask<HdxSimpleLightBypassTask>(&_delegate,
_simpleLightBypassTaskId);
_delegate.SetParameter(_simpleLightBypassTaskId, HdTokens->params,
simpleLightBypassParams);
_delegate.SetParameter(_simpleLightBypassTaskId, HdTokens->children,
SdfPathVector());
}
/* virtual */
HdStreamTaskController::~HdStreamTaskController()
{
GetRenderIndex()->RemoveSprim(HdPrimTypeTokens->camera, _cameraId);
SdfPath const tasks[] = {
_renderTaskId,
_idRenderTaskId,
_selectionTaskId,
_simpleLightTaskId,
_simpleLightBypassTaskId,
};
for (size_t i = 0; i < sizeof(tasks)/sizeof(tasks[0]); ++i) {
GetRenderIndex()->RemoveTask(tasks[i]);
}
TF_FOR_ALL (id, _lightIds) {
GetRenderIndex()->RemoveSprim(HdPrimTypeTokens->light, *id);
}
void
HdStreamTaskController::_CreateRenderTasks()
{
// Create two render tasks, one to create a color render, the other
// to create an id render (so we don't need to thrash params).
_renderTaskId = GetControllerId().AppendChild(_tokens->renderTask);
_idRenderTaskId = GetControllerId().AppendChild(_tokens->idRenderTask);
HdxRenderTaskParams renderParams;
renderParams.camera = _cameraId;
renderParams.viewport = GfVec4d(0,0,1,1);
HdRprimCollection collection(HdTokens->geometry, HdTokens->smoothHull);
collection.SetRootPath(SdfPath::AbsoluteRootPath());
SdfPath const renderTasks[] = {
_renderTaskId,
_idRenderTaskId,
};
for (size_t i = 0; i < sizeof(renderTasks)/sizeof(renderTasks[0]); ++i) {
GetRenderIndex()->InsertTask<HdxRenderTask>(&_delegate,
renderTasks[i]);
_delegate.SetParameter(renderTasks[i], HdTokens->params,
renderParams);
_delegate.SetParameter(renderTasks[i], HdTokens->children,
SdfPathVector());
_delegate.SetParameter(renderTasks[i], HdTokens->collection,
collection);
}
}
void
HdSt_UnitTestDelegate::AddTexture(SdfPath const& id,
GlfTextureRefPtr const& texture)
{
HdRenderIndex& index = GetRenderIndex();
index.InsertBprim(HdPrimTypeTokens->texture, this, id);
_textures[id] = _Texture(texture);
}
HdTaskSharedPtrVector
UsdMayaGLBatchRenderer::TaskDelegate::GetSetupTasks()
{
HdTaskSharedPtrVector tasks;
// lighting
tasks.push_back(GetRenderIndex().GetTask(_simpleLightTaskId));
return tasks;
}
void
UsdMayaGLBatchRenderer::TaskDelegate::SetCameraState(
const GfMatrix4d& viewMatrix,
const GfMatrix4d& projectionMatrix,
const GfVec4d& viewport)
{
// cache the camera matrices
_ValueCache &cache = _valueCacheMap[_cameraId];
cache[HdStCameraTokens->worldToViewMatrix] = VtValue(viewMatrix);
cache[HdStCameraTokens->projectionMatrix] = VtValue(projectionMatrix);
cache[HdStCameraTokens->windowPolicy] = VtValue(); // no window policy.
// invalidate the camera to be synced
GetRenderIndex().GetChangeTracker().MarkSprimDirty(_cameraId,
HdStCamera::AllDirty);
if( _viewport != viewport )
{
// viewport is also read by HdxRenderTaskParam. invalidate it.
_viewport = viewport;
// update all render tasks
for( const auto &it : _renderTaskIdMap )
{
SdfPath const &taskId = it.second;
HdxRenderTaskParams taskParams
= _GetValue<HdxRenderTaskParams>(taskId, HdTokens->params);
// update viewport in HdxRenderTaskParams
taskParams.viewport = viewport;
_SetValue(taskId, HdTokens->params, taskParams);
// invalidate
GetRenderIndex().GetChangeTracker().MarkTaskDirty(
taskId, HdChangeTracker::DirtyParams);
}
}
}
UsdImaging_DefaultTaskDelegate::~UsdImaging_DefaultTaskDelegate()
{
// remove the render graph entities from the renderIndex
HdRenderIndex &renderIndex = GetRenderIndex();
renderIndex.RemoveCamera(_cameraId);
renderIndex.RemoveTask(_selectionTaskId);
renderIndex.RemoveTask(_simpleLightTaskId);
renderIndex.RemoveTask(_simpleLightBypassTaskId);
renderIndex.RemoveTask(_renderTaskId);
renderIndex.RemoveTask(_idRenderTaskId);
TF_FOR_ALL (id, _lightIds) {
renderIndex.RemoveLight(*id);
}
void
UsdMayaGLBatchRenderer::TaskDelegate::_InsertRenderTask(SdfPath const &id)
{
GetRenderIndex().InsertTask<HdxRenderTask>(this, id);
_ValueCache &cache = _valueCacheMap[id];
HdxRenderTaskParams taskParams;
taskParams.camera = _cameraId;
// Initialize viewport to the latest value since render tasks can be lazily
// instantiated, potentially even after SetCameraState. All other
// parameters will be updated by _UpdateRenderParams.
taskParams.viewport = _viewport;
cache[HdTokens->params] = VtValue(taskParams);
cache[HdTokens->children] = VtValue(SdfPathVector());
cache[HdTokens->collection] = VtValue();
}
void
HdStreamTaskController::_CreateCamera()
{
// Create a default camera, driven by SetCameraMatrices.
_cameraId = GetControllerId().AppendChild(_tokens->camera);
GetRenderIndex()->InsertSprim(HdPrimTypeTokens->camera,
&_delegate, _cameraId);
_delegate.SetParameter(_cameraId, HdStCameraTokens->windowPolicy,
VtValue());
_delegate.SetParameter(_cameraId, HdStCameraTokens->matrices,
HdStCameraMatrices());
_delegate.SetParameter(_cameraId, HdStCameraTokens->clipPlanes,
VtValue(std::vector<GfVec4d>()));
}
void
HdStreamTaskController::_CreateSelectionTask()
{
// Create a selection highlighting task.
_selectionTaskId = GetControllerId().AppendChild(_tokens->selectionTask);
HdxSelectionTaskParams selectionParams;
selectionParams.enableSelection = true;
selectionParams.selectionColor = GfVec4f(1,1,0,1);
selectionParams.locateColor = GfVec4f(0,0,1,1);
GetRenderIndex()->InsertTask<HdxSelectionTask>(&_delegate,
_selectionTaskId);
_delegate.SetParameter(_selectionTaskId, HdTokens->params,
selectionParams);
_delegate.SetParameter(_selectionTaskId, HdTokens->children,
SdfPathVector());
}
UsdImaging_DefaultTaskDelegate::UsdImaging_DefaultTaskDelegate(
HdRenderIndexSharedPtr const& parentIndex,
SdfPath const& delegateID)
: UsdImagingTaskDelegate(parentIndex, delegateID)
, _viewport(0,0,1,1)
, _selectionColor(1,1,0,1)
{
// create an unique namespace
_rootId = delegateID.AppendChild(
TfToken(TfStringPrintf("_UsdImaging_%p", this)));
_renderTaskId = _rootId.AppendChild(_tokens->renderTask);
_idRenderTaskId = _rootId.AppendChild(_tokens->idRenderTask);
_selectionTaskId = _rootId.AppendChild(_tokens->selectionTask);
_simpleLightTaskId = _rootId.AppendChild(_tokens->simpleLightTask);
_simpleLightBypassTaskId = _rootId.AppendChild(_tokens->simpleLightBypassTask);
_cameraId = _rootId.AppendChild(_tokens->camera);
_activeSimpleLightTaskId = SdfPath();
// TODO: tasks of shadow map generation, accumulation etc will be
// prepared here.
HdRenderIndex &renderIndex = GetRenderIndex();
// camera
{
renderIndex.InsertCamera<HdCamera>(this, _cameraId);
_ValueCache &cache = _valueCacheMap[_cameraId];
cache[HdShaderTokens->worldToViewMatrix] = VtValue(GfMatrix4d(1));
cache[HdShaderTokens->projectionMatrix] = VtValue(GfMatrix4d(1));
cache[HdTokens->cameraFrustum] = VtValue(); // we don't use GfFrustum.
cache[HdTokens->windowPolicy] = VtValue(); // we don't use window policy.
}
// selection task
{
renderIndex.InsertTask<HdxSelectionTask>(this, _selectionTaskId);
_ValueCache &cache = _valueCacheMap[_selectionTaskId];
HdxSelectionTaskParams params;
params.enableSelection = true;
params.selectionColor = _selectionColor;
params.locateColor = GfVec4f(0,0,1,1);
cache[HdTokens->params] = VtValue(params);
cache[HdTokens->children] = VtValue(SdfPathVector());
}
// simple lighting task (for Hydra native)
{
renderIndex.InsertTask<HdxSimpleLightTask>(this, _simpleLightTaskId);
_ValueCache &cache = _valueCacheMap[_simpleLightTaskId];
HdxSimpleLightTaskParams params;
params.cameraPath = _cameraId;
cache[HdTokens->params] = VtValue(params);
cache[HdTokens->children] = VtValue(SdfPathVector());
}
// simple lighting task (for Presto UsdBaseIc compatible)
{
renderIndex.InsertTask<HdxSimpleLightBypassTask>(this,
_simpleLightBypassTaskId);
_ValueCache &cache = _valueCacheMap[_simpleLightBypassTaskId];
HdxSimpleLightBypassTaskParams params;
params.cameraPath = _cameraId;
cache[HdTokens->params] = VtValue(params);
cache[HdTokens->children] = VtValue(SdfPathVector());
}
// render task
_InsertRenderTask(_renderTaskId);
_InsertRenderTask(_idRenderTaskId);
// initialize HdxRenderTaskParams for render tasks
_UpdateCollection(&_rprims, HdTokens->geometry, HdTokens->smoothHull,
SdfPathVector(1, SdfPath::AbsoluteRootPath()),
_renderTaskId,
_idRenderTaskId);
_UpdateRenderParams(_renderParams,
_renderParams,
_renderTaskId);
_UpdateRenderParams(_idRenderParams,
_idRenderParams,
_idRenderTaskId);
}
HdTaskSharedPtr
UsdMayaGLBatchRenderer::TaskDelegate::GetRenderTask(
size_t hash,
RenderParams const &renderParams,
SdfPathVector const &roots)
{
// select bucket
SdfPath renderTaskId;
if( !TfMapLookup(_renderTaskIdMap, hash, &renderTaskId) )
{
// create new render task if not exists
renderTaskId = _rootId.AppendChild(
TfToken(TfStringPrintf("renderTask%zx", hash)));
_InsertRenderTask(renderTaskId);
_renderTaskIdMap[hash] = renderTaskId;
}
//
// XXX: The Maya-Hydra plugin needs refactoring such that the plugin is
// creating a different collection name for each collection it is trying to
// manage. (i.e. Each collection within a frame that has different content
// should have a different collection name)
//
// With Hydra, changing the contents of a collection can be
// an expensive operation as it causes draw batches to be rebuilt.
//
// The Maya-Hydra Plugin is currently reusing the same collection
// name for all collections within a frame.
// (This stems from a time when collection name had a significant meaning
// rather than id'ing a collection).
//
// The plugin should also track deltas to the contents of a collection
// and set Hydra's dirty state when prims get added and removed from
// the collection.
//
// Another possible change that can be made to this code is HdxRenderTask
// now takes an array of collections, so it is possible to support different
// reprs using the same task. Therefore, this code should be modified to
// only add one task that is provided with the active set of collections.
//
// However, a further improvement to the code could be made using
// UsdDelegate's fallback repr feature instead of using multiple
// collections as it would avoid modifying the collection as a Maya shape
// object display state changes. This would result in a much cheaper state
// transition within Hydra itself.
//
TfToken colName = renderParams.geometryCol;
HdRprimCollection rprims(colName, renderParams.drawRepr);
rprims.SetRootPaths(roots);
rprims.SetRenderTags(renderParams.renderTags);
GetRenderIndex().GetChangeTracker().MarkCollectionDirty(colName);
// update value cache
_SetValue(renderTaskId, HdTokens->collection, rprims);
// invalidate
GetRenderIndex().GetChangeTracker().MarkTaskDirty(
renderTaskId, HdChangeTracker::DirtyCollection);
// update render params in the value cache
HdxRenderTaskParams taskParams =
_GetValue<HdxRenderTaskParams>(renderTaskId, HdTokens->params);
// update params
taskParams.overrideColor = renderParams.overrideColor;
taskParams.wireframeColor = renderParams.wireframeColor;
taskParams.enableLighting = renderParams.enableLighting;
taskParams.enableIdRender = false;
taskParams.alphaThreshold = 0.1;
taskParams.tessLevel = 32.0;
const float tinyThreshold = 0.9f;
taskParams.drawingRange = GfVec2f(tinyThreshold, -1.0f);
taskParams.depthBiasUseDefault = true;
taskParams.depthFunc = HdCmpFuncLess;
taskParams.cullStyle = renderParams.cullStyle;
taskParams.geomStyle = HdGeomStylePolygons;
taskParams.enableHardwareShading = true;
// note that taskParams.rprims and taskParams.viewport are not updated
// in this function, and needed to be preserved.
// store into cache
_SetValue(renderTaskId, HdTokens->params, taskParams);
// invalidate
GetRenderIndex().GetChangeTracker().MarkTaskDirty(
renderTaskId, HdChangeTracker::DirtyParams);
return GetRenderIndex().GetTask(renderTaskId);
}
void
UsdMayaGLBatchRenderer::TaskDelegate::_SetLightingStateFromLightingContext()
{
const GlfSimpleLightVector& lights = _lightingContext->GetLights();
bool hasNumLightsChanged = false;
// Insert light Ids into the render index for those that do not yet exist.
while (_lightIds.size() < lights.size()) {
SdfPath lightId(
TfStringPrintf("%s/light%d",
_rootId.GetText(),
(int)_lightIds.size()));
_lightIds.push_back(lightId);
// Since we're hardcoded to use HdStRenderDelegate, we expect to have
// light Sprims.
TF_VERIFY(GetRenderIndex().IsSprimTypeSupported(HdPrimTypeTokens->light));
GetRenderIndex().InsertSprim(HdPrimTypeTokens->light, this, lightId);
hasNumLightsChanged = true;
}
// Remove unused light Ids from HdRenderIndex
while (_lightIds.size() > lights.size()) {
GetRenderIndex().RemoveSprim(HdPrimTypeTokens->light, _lightIds.back());
_lightIds.pop_back();
hasNumLightsChanged = true;
}
// invalidate HdLights
for (size_t i = 0; i < lights.size(); ++i) {
_ValueCache &cache = _valueCacheMap[_lightIds[i]];
// store GlfSimpleLight directly.
cache[HdStLightTokens->params] = VtValue(lights[i]);
cache[HdStLightTokens->transform] = VtValue();
cache[HdStLightTokens->shadowParams] = VtValue(HdxShadowParams());
cache[HdStLightTokens->shadowCollection] = VtValue();
// Only mark as dirty the parameters to avoid unnecessary invalidation
// specially marking as dirty lightShadowCollection will trigger
// a collection dirty on geometry and we don't want that to happen
// always
GetRenderIndex().GetChangeTracker().MarkSprimDirty(
_lightIds[i], HdStLight::AllDirty);
}
// sadly the material also comes from lighting context right now...
HdxSimpleLightTaskParams taskParams
= _GetValue<HdxSimpleLightTaskParams>(_simpleLightTaskId,
HdTokens->params);
taskParams.sceneAmbient = _lightingContext->GetSceneAmbient();
taskParams.material = _lightingContext->GetMaterial();
// invalidate HdxSimpleLightTask too
if (hasNumLightsChanged) {
_SetValue(_simpleLightTaskId, HdTokens->params, taskParams);
GetRenderIndex().GetChangeTracker().MarkTaskDirty(
_simpleLightTaskId, HdChangeTracker::DirtyParams);
}
}