2 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali/internal/update/manager/render-instruction-processor.h>
22 #include <dali/integration-api/debug.h>
23 #include <dali/internal/event/actors/layer-impl.h> // for the default sorting function
24 #include <dali/internal/render/common/render-instruction-container.h>
25 #include <dali/internal/render/common/render-instruction.h>
26 #include <dali/internal/render/common/render-item.h>
27 #include <dali/internal/render/common/render-tracker.h>
28 #include <dali/internal/render/renderers/render-renderer.h>
29 #include <dali/internal/render/shaders/render-shader.h>
30 #include <dali/internal/update/manager/sorted-layers.h>
31 #include <dali/internal/update/nodes/scene-graph-layer.h>
32 #include <dali/internal/update/render-tasks/scene-graph-render-task.h>
33 #include <dali/internal/update/rendering/scene-graph-texture-set.h>
34 #include <dali/public-api/actors/layer.h>
38 #if defined(DEBUG_ENABLED)
39 Debug::Filter* gRenderListLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_RENDER_LISTS");
52 * Function which compares render items by shader/textureSet/geometry
53 * @param[in] lhs Left hand side item
54 * @param[in] rhs Right hand side item
55 * @return True if left item is greater than right
57 inline bool PartialCompareItems(const RenderInstructionProcessor::SortAttributes& lhs,
58 const RenderInstructionProcessor::SortAttributes& rhs)
60 if(lhs.shader == rhs.shader)
62 if(lhs.textureSet == rhs.textureSet)
64 return lhs.geometry < rhs.geometry;
66 return lhs.textureSet < rhs.textureSet;
68 return lhs.shader < rhs.shader;
72 * Function which sorts render items by depth index then by instance
73 * ptrs of shader/textureSet/geometry.
74 * @param[in] lhs Left hand side item
75 * @param[in] rhs Right hand side item
76 * @return True if left item is greater than right
78 bool CompareItems(const RenderInstructionProcessor::SortAttributes& lhs, const RenderInstructionProcessor::SortAttributes& rhs)
80 // @todo Consider replacing all these sortAttributes with a single long int that
81 // encapsulates the same data (e.g. the middle-order bits of the ptrs).
82 if(lhs.renderItem->mDepthIndex == rhs.renderItem->mDepthIndex)
84 return PartialCompareItems(lhs, rhs);
86 return lhs.renderItem->mDepthIndex < rhs.renderItem->mDepthIndex;
90 * Function which sorts the render items by Z function, then
91 * by instance ptrs of shader / geometry / material.
92 * @param[in] lhs Left hand side item
93 * @param[in] rhs Right hand side item
94 * @return True if left item is greater than right
96 bool CompareItems3D(const RenderInstructionProcessor::SortAttributes& lhs, const RenderInstructionProcessor::SortAttributes& rhs)
98 const bool lhsIsOpaque = lhs.renderItem->mIsOpaque;
99 if(lhsIsOpaque == rhs.renderItem->mIsOpaque)
103 // If both RenderItems are opaque, sort using shader, then material then geometry.
104 return PartialCompareItems(lhs, rhs);
108 // If both RenderItems are transparent, sort using Z, then shader, then material, then geometry.
109 if(Equals(lhs.zValue, rhs.zValue))
111 return PartialCompareItems(lhs, rhs);
113 return lhs.zValue > rhs.zValue;
123 * Function which sorts render items by clipping hierarchy, then Z function and instance ptrs of shader / geometry / material.
124 * @param[in] lhs Left hand side item
125 * @param[in] rhs Right hand side item
126 * @return True if left item is greater than right
128 bool CompareItems3DWithClipping(const RenderInstructionProcessor::SortAttributes& lhs, const RenderInstructionProcessor::SortAttributes& rhs)
130 // Items must be sorted in order of clipping first, otherwise incorrect clipping regions could be used.
131 if(lhs.renderItem->mNode->mClippingSortModifier == rhs.renderItem->mNode->mClippingSortModifier)
133 return CompareItems3D(lhs, rhs);
136 return lhs.renderItem->mNode->mClippingSortModifier < rhs.renderItem->mNode->mClippingSortModifier;
140 * Set the update size of the node
141 * @param[in] node The node of the renderer
142 * @param[in] isLayer3d Whether we are processing a 3D layer or not
143 * @param[in,out] nodeWorldMatrix The world matrix of the node
144 * @param[in,out] nodeSize The size of the node
145 * @param[in,out] nodeUpdateSize The update size of the node
147 inline void SetNodeUpdateSize(Node* node, bool isLayer3d, Matrix& nodeWorldMatrix, Vector3& nodeSize, Vector3& nodeUpdateSize)
149 node->GetWorldMatrixAndSize(nodeWorldMatrix, nodeSize);
151 if(node->GetUpdateSizeHint() == Vector3::ZERO)
153 // RenderItem::CalculateViewportSpaceAABB cannot cope with z transform
154 // I don't use item.mModelMatrix.GetTransformComponents() for z transform, would be too slow
155 if(!isLayer3d && nodeWorldMatrix.GetZAxis() == Vector3(0.0f, 0.0f, 1.0f))
157 nodeUpdateSize = nodeSize;
162 nodeUpdateSize = node->GetUpdateSizeHint();
167 * Add a renderer to the list
168 * @param updateBufferIndex to read the model matrix from
169 * @param renderList to add the item to
170 * @param renderable Node-Renderer pair
171 * @param viewMatrix used to calculate modelview matrix for the item
172 * @param camera The camera used to render
173 * @param isLayer3d Whether we are processing a 3D layer or not
174 * @param viewportSet Whether the viewport is set or not
175 * @param viewport The viewport
176 * @param cull Whether frustum culling is enabled or not
178 inline void AddRendererToRenderList(BufferIndex updateBufferIndex,
179 RenderList& renderList,
180 Renderable& renderable,
181 const Matrix& viewMatrix,
182 SceneGraph::Camera& camera,
185 const Viewport& viewport,
189 Node* node = renderable.mNode;
190 Matrix nodeWorldMatrix(false);
192 Vector3 nodeUpdateSize;
193 bool nodeUpdateSizeSet(false);
194 Matrix nodeModelViewMatrix(false);
195 bool nodeModelViewMatrixSet(false);
197 if(cull && renderable.mRenderer && !renderable.mRenderer->GetShader().HintEnabled(Dali::Shader::Hint::MODIFIES_GEOMETRY) && node->GetClippingMode() == ClippingMode::DISABLED)
199 const Vector4& boundingSphere = node->GetBoundingSphere();
200 inside = (boundingSphere.w > Math::MACHINE_EPSILON_1000) &&
201 (camera.CheckSphereInFrustum(updateBufferIndex, Vector3(boundingSphere), boundingSphere.w));
203 if(inside && !isLayer3d && viewportSet)
205 SetNodeUpdateSize(node, isLayer3d, nodeWorldMatrix, nodeSize, nodeUpdateSize);
206 nodeUpdateSizeSet = true;
208 const Vector3& scale = node->GetWorldScale(updateBufferIndex);
209 const Vector3& halfSize = nodeUpdateSize * scale * 0.5f;
210 float radius(halfSize.Length());
212 if(radius > Math::MACHINE_EPSILON_1000)
214 Matrix::Multiply(nodeModelViewMatrix, nodeWorldMatrix, viewMatrix);
215 nodeModelViewMatrixSet = true;
217 ClippingBox clippingBox = RenderItem::CalculateViewportSpaceAABB(nodeModelViewMatrix, nodeUpdateSize, viewport.width, viewport.height);
218 inside = clippingBox.Intersects(viewport);
225 Renderer::OpacityType opacityType = renderable.mRenderer ? renderable.mRenderer->GetOpacityType(updateBufferIndex, *node) : Renderer::OPAQUE;
227 // We can skip render when node is not clipping and transparent
228 const bool skipRender(opacityType == Renderer::TRANSPARENT && node->GetClippingMode() == ClippingMode::DISABLED);
231 // Get the next free RenderItem.
232 RenderItem& item = renderList.GetNextFreeItem();
235 auto& partialRenderingData = node->GetPartialRenderingData();
237 auto& partialRenderingCacheInfo = node->GetPartialRenderingData().GetCurrentCacheInfo();
239 partialRenderingCacheInfo.node = node;
240 partialRenderingCacheInfo.isOpaque = (opacityType == Renderer::OPAQUE);
241 partialRenderingCacheInfo.renderer = renderable.mRenderer;
242 partialRenderingCacheInfo.color = node->GetColor(updateBufferIndex);
243 partialRenderingCacheInfo.depthIndex = node->GetDepthIndex();
245 if(DALI_LIKELY(renderable.mRenderer))
247 partialRenderingCacheInfo.textureSet = renderable.mRenderer->GetTextureSet();
251 item.mIsOpaque = (opacityType == Renderer::OPAQUE);
252 item.mColor = node->GetColor(updateBufferIndex);
254 item.mDepthIndex = 0;
257 item.mDepthIndex = node->GetDepthIndex();
260 if(DALI_LIKELY(renderable.mRenderer))
262 item.mRenderer = &renderable.mRenderer->GetRenderer();
263 item.mTextureSet = renderable.mRenderer->GetTextureSet();
264 item.mDepthIndex += renderable.mRenderer->GetDepthIndex();
268 item.mRenderer = nullptr;
271 item.mIsUpdated |= isLayer3d;
273 if(!nodeUpdateSizeSet)
275 SetNodeUpdateSize(node, isLayer3d, nodeWorldMatrix, nodeSize, nodeUpdateSize);
278 item.mSize = nodeSize;
279 item.mUpdateSize = nodeUpdateSize;
280 item.mModelMatrix = nodeWorldMatrix;
282 if(!nodeModelViewMatrixSet)
284 Matrix::Multiply(nodeModelViewMatrix, nodeWorldMatrix, viewMatrix);
286 item.mModelViewMatrix = nodeModelViewMatrix;
288 partialRenderingCacheInfo.matrix = item.mModelViewMatrix;
289 partialRenderingCacheInfo.size = item.mSize;
290 partialRenderingCacheInfo.updatedSize = item.mUpdateSize;
292 item.mIsUpdated = partialRenderingData.IsUpdated() || item.mIsUpdated;
293 partialRenderingData.SwapBuffers();
295 node->SetCulled(updateBufferIndex, false);
299 node->SetCulled(updateBufferIndex, true);
304 * Add all renderers to the list
305 * @param updateBufferIndex to read the model matrix from
306 * @param renderList to add the items to
307 * @param renderers to render
308 * NodeRendererContainer Node-Renderer pairs
309 * @param viewMatrix used to calculate modelview matrix for the items
310 * @param camera The camera used to render
311 * @param isLayer3d Whether we are processing a 3D layer or not
312 * @param cull Whether frustum culling is enabled or not
314 inline void AddRenderersToRenderList(BufferIndex updateBufferIndex,
315 RenderList& renderList,
316 RenderableContainer& renderers,
317 const Matrix& viewMatrix,
318 SceneGraph::Camera& camera,
321 const Viewport& viewport,
324 DALI_LOG_INFO(gRenderListLogFilter, Debug::Verbose, "AddRenderersToRenderList()\n");
326 for(auto&& renderer : renderers)
328 AddRendererToRenderList(updateBufferIndex,
341 * Try to reuse cached RenderItems from the RenderList
342 * This avoids recalculating the model view matrices in case this part of the scene was static
343 * An example case is a toolbar layer that rarely changes or a popup on top of the rest of the stage
344 * @param layer that is being processed
345 * @param renderList that is cached from frame N-1
346 * @param renderables list of renderables
348 inline bool TryReuseCachedRenderers(Layer& layer,
349 RenderList& renderList,
350 RenderableContainer& renderables)
352 bool retValue = false;
353 uint32_t renderableCount = static_cast<uint32_t>(renderables.Size());
354 // Check that the cached list originates from this layer and that the counts match
355 if((renderList.GetSourceLayer() == &layer) &&
356 (renderList.GetCachedItemCount() == renderableCount))
358 // Check that all the same renderers are there. This gives us additional security in avoiding rendering the wrong things.
359 // Render list is sorted so at this stage renderers may be in different order.
360 // Therefore we check a combined sum of all renderer addresses.
361 size_t checkSumNew = 0;
362 size_t checkSumOld = 0;
363 for(uint32_t index = 0; index < renderableCount; ++index)
365 if(DALI_LIKELY(renderables[index].mRenderer))
367 const Render::Renderer& renderer = renderables[index].mRenderer->GetRenderer();
368 checkSumNew += reinterpret_cast<std::size_t>(&renderer);
370 if(DALI_LIKELY(renderList.GetItem(index).mRenderer))
372 checkSumOld += reinterpret_cast<std::size_t>(&renderList.GetRenderer(index));
375 if(checkSumNew == checkSumOld)
377 // tell list to reuse its existing items
378 renderList.ReuseCachedItems();
386 inline bool SetupRenderList(RenderableContainer& renderables,
388 RenderInstruction& instruction,
389 bool tryReuseRenderList,
390 RenderList** renderList)
392 *renderList = &(instruction.GetNextFreeRenderList(renderables.Size()));
393 (*renderList)->SetClipping(layer.IsClipping(), layer.GetClippingBox());
394 (*renderList)->SetSourceLayer(&layer);
396 // Try to reuse cached RenderItems from last time around.
397 return (tryReuseRenderList && TryReuseCachedRenderers(layer, **renderList, renderables));
400 } // Anonymous namespace.
402 RenderInstructionProcessor::RenderInstructionProcessor()
405 // Set up a container of comparators for fast run-time selection.
406 mSortComparitors.Reserve(3u);
408 mSortComparitors.PushBack(CompareItems);
409 mSortComparitors.PushBack(CompareItems3D);
410 mSortComparitors.PushBack(CompareItems3DWithClipping);
413 RenderInstructionProcessor::~RenderInstructionProcessor() = default;
415 inline void RenderInstructionProcessor::SortRenderItems(BufferIndex bufferIndex, RenderList& renderList, Layer& layer, bool respectClippingOrder)
417 const uint32_t renderableCount = static_cast<uint32_t>(renderList.Count());
418 // Reserve space if needed.
419 const uint32_t oldcapacity = static_cast<uint32_t>(mSortingHelper.size());
420 if(oldcapacity < renderableCount)
422 mSortingHelper.reserve(renderableCount);
423 // Add real objects (reserve does not construct objects).
424 mSortingHelper.insert(mSortingHelper.begin() + oldcapacity,
425 (renderableCount - oldcapacity),
426 RenderInstructionProcessor::SortAttributes());
430 // Clear extra elements from helper, does not decrease capability.
431 mSortingHelper.resize(renderableCount);
434 // Calculate the sorting value, once per item by calling the layers sort function.
435 // Using an if and two for-loops rather than if inside for as its better for branch prediction.
436 if(layer.UsesDefaultSortFunction())
438 for(uint32_t index = 0; index < renderableCount; ++index)
440 RenderItem& item = renderList.GetItem(index);
442 if(DALI_LIKELY(item.mRenderer))
444 item.mRenderer->SetSortAttributes(mSortingHelper[index]);
448 mSortingHelper[index].textureSet = item.mTextureSet;
450 // The default sorting function should get inlined here.
451 mSortingHelper[index].zValue = Internal::Layer::ZValue(item.mModelViewMatrix.GetTranslation3()) - static_cast<float>(item.mDepthIndex);
453 // Keep the renderitem pointer in the helper so we can quickly reorder items after sort.
454 mSortingHelper[index].renderItem = &item;
459 const Dali::Layer::SortFunctionType sortFunction = layer.GetSortFunction();
460 for(uint32_t index = 0; index < renderableCount; ++index)
462 RenderItem& item = renderList.GetItem(index);
464 if(DALI_LIKELY(item.mRenderer))
466 item.mRenderer->SetSortAttributes(mSortingHelper[index]);
470 mSortingHelper[index].textureSet = item.mTextureSet;
472 mSortingHelper[index].zValue = (*sortFunction)(item.mModelViewMatrix.GetTranslation3()) - static_cast<float>(item.mDepthIndex);
474 // Keep the RenderItem pointer in the helper so we can quickly reorder items after sort.
475 mSortingHelper[index].renderItem = &item;
479 // Here we determine which comparitor (of the 3) to use.
482 // 2 is LAYER_3D + Clipping
483 const unsigned int comparitorIndex = layer.GetBehavior() == Dali::Layer::LAYER_3D ? respectClippingOrder ? 2u : 1u : 0u;
485 std::stable_sort(mSortingHelper.begin(), mSortingHelper.end(), mSortComparitors[comparitorIndex]);
487 // Reorder / re-populate the RenderItems in the RenderList to correct order based on the sortinghelper.
488 DALI_LOG_INFO(gRenderListLogFilter, Debug::Verbose, "Sorted Transparent List:\n");
489 RenderItemContainer::Iterator renderListIter = renderList.GetContainer().Begin();
490 for(uint32_t index = 0; index < renderableCount; ++index, ++renderListIter)
492 *renderListIter = mSortingHelper[index].renderItem;
493 DALI_LOG_INFO(gRenderListLogFilter, Debug::Verbose, " sortedList[%d] = %p\n", index, mSortingHelper[index].renderItem->mRenderer);
497 void RenderInstructionProcessor::Prepare(BufferIndex updateBufferIndex,
498 SortedLayerPointers& sortedLayers,
499 RenderTask& renderTask,
501 bool hasClippingNodes,
502 RenderInstructionContainer& instructions)
504 // Retrieve the RenderInstruction buffer from the RenderInstructionContainer
505 // then populate with instructions.
506 RenderInstruction& instruction = renderTask.PrepareRenderInstruction(updateBufferIndex);
507 bool viewMatrixHasNotChanged = !renderTask.ViewMatrixUpdated();
508 bool isRenderListAdded = false;
509 bool isRootLayerDirty = false;
511 const Matrix& viewMatrix = renderTask.GetViewMatrix(updateBufferIndex);
512 SceneGraph::Camera& camera = renderTask.GetCamera();
515 bool viewportSet = renderTask.QueryViewport(updateBufferIndex, viewport);
517 const SortedLayersIter endIter = sortedLayers.end();
518 for(SortedLayersIter iter = sortedLayers.begin(); iter != endIter; ++iter)
520 Layer& layer = **iter;
521 const bool tryReuseRenderList(viewMatrixHasNotChanged && layer.CanReuseRenderers(&renderTask.GetCamera()));
522 const bool isLayer3D = layer.GetBehavior() == Dali::Layer::LAYER_3D;
523 RenderList* renderList = nullptr;
525 if(layer.IsRoot() && (layer.GetDirtyFlags() != NodePropertyFlags::NOTHING))
527 // If root-layer & dirty, i.e. a property has changed or a child has been deleted, then we need to ensure we render once more
528 isRootLayerDirty = true;
531 if(!layer.colorRenderables.Empty())
533 RenderableContainer& renderables = layer.colorRenderables;
535 if(!SetupRenderList(renderables, layer, instruction, tryReuseRenderList, &renderList))
537 renderList->SetHasColorRenderItems(true);
538 AddRenderersToRenderList(updateBufferIndex,
548 // We only use the clipping version of the sort comparitor if any clipping nodes exist within the RenderList.
549 SortRenderItems(updateBufferIndex, *renderList, layer, hasClippingNodes);
552 isRenderListAdded = true;
555 if(!layer.overlayRenderables.Empty())
557 RenderableContainer& renderables = layer.overlayRenderables;
559 if(!SetupRenderList(renderables, layer, instruction, tryReuseRenderList, &renderList))
561 renderList->SetHasColorRenderItems(false);
562 AddRenderersToRenderList(updateBufferIndex,
572 // Clipping hierarchy is irrelevant when sorting overlay items, so we specify using the non-clipping version of the sort comparitor.
573 SortRenderItems(updateBufferIndex, *renderList, layer, false);
576 isRenderListAdded = true;
580 // Inform the render instruction that all renderers have been added and this frame is complete.
581 instruction.UpdateCompleted();
583 if(isRenderListAdded || instruction.mIsClearColorSet || isRootLayerDirty)
585 instructions.PushBack(updateBufferIndex, &instruction);
589 } // namespace SceneGraph
591 } // namespace Internal