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1 /*
2  * Copyright (c) 2023 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef CORE3D_RENDER__NODE__RENDER_NODE_DEFAULT_ENVIRONMENT_BLENDER_H
17 #define CORE3D_RENDER__NODE__RENDER_NODE_DEFAULT_ENVIRONMENT_BLENDER_H
18 
19 #include <3d/namespace.h>
20 #include <3d/render/intf_render_data_store_default_light.h>
21 #include <base/containers/string.h>
22 #include <base/containers/vector.h>
23 #include <base/util/uid.h>
24 #include <render/datastore/intf_render_data_store_post_process.h>
25 #include <render/datastore/render_data_store_render_pods.h>
26 #include <render/device/pipeline_state_desc.h>
27 #include <render/nodecontext/intf_pipeline_descriptor_set_binder.h>
28 #include <render/nodecontext/intf_render_node.h>
29 #include <render/render_data_structures.h>
30 #include <render/resource_handle.h>
31 
32 #include "render/render_node_scene_util.h"
33 
34 RENDER_BEGIN_NAMESPACE()
35 struct RenderNodeGraphInputs;
36 RENDER_END_NAMESPACE()
37 
38 CORE3D_BEGIN_NAMESPACE()
39 class IRenderDataStoreDefaultCamera;
40 class IRenderDataStoreDefaultScene;
41 
42 class RenderNodeDefaultEnvironmentBlender final : public RENDER_NS::IRenderNode {
43 public:
44     RenderNodeDefaultEnvironmentBlender() = default;
45     ~RenderNodeDefaultEnvironmentBlender() override = default;
46 
47     void InitNode(RENDER_NS::IRenderNodeContextManager& renderNodeContextMgr) override;
48     void PreExecuteFrame() override;
49     void ExecuteFrame(RENDER_NS::IRenderCommandList& cmdList) override;
50     ExecuteFlags GetExecuteFlags() const override;
51 
52     // for plugin / factory interface
53     static constexpr BASE_NS::Uid UID { "291720f5-1a00-446f-ab98-cc62f6c29562" };
54     static constexpr char const* TYPE_NAME = "RenderNodeDefaultEnvironmentBlender";
55     static constexpr IRenderNode::BackendFlags BACKEND_FLAGS = IRenderNode::BackendFlagBits::BACKEND_FLAG_BITS_DEFAULT;
56     static constexpr IRenderNode::ClassType CLASS_TYPE = IRenderNode::ClassType::CLASS_TYPE_NODE;
57     static IRenderNode* Create();
58     static void Destroy(IRenderNode* instance);
59 
60     struct DefaultImagesAndSamplers {
61         RENDER_NS::RenderHandle cubemapSamplerHandle;
62 
63         RENDER_NS::RenderHandle linearHandle;
64         RENDER_NS::RenderHandle nearestHandle;
65         RENDER_NS::RenderHandle linearMipHandle;
66 
67         RENDER_NS::RenderHandle skyBoxRadianceCubemapHandle;
68     };
69 
70 private:
71     RENDER_NS::IRenderNodeContextManager* renderNodeContextMgr_ { nullptr };
72 
73     void InitializeShaderData();
74     void InitCreateBinders();
75     void ParseRenderNodeInputs();
76     void UpdateImageData();
77     RENDER_NS::RenderHandle GetEnvironmentTargetHandle(const RenderCamera::Environment& environment);
78     void FillBlendEnvironments(BASE_NS::array_view<const RenderCamera::Environment> environments, uint32_t idx,
79         BASE_NS::array_view<RENDER_NS::RenderHandle>& blendEnvs) const;
80     void UpdateSet0(RENDER_NS::IRenderCommandList& cmdList,
81         BASE_NS::array_view<const RENDER_NS::RenderHandle> blendImages, const uint32_t envIdx, const uint32_t mipIdx);
82     void ExecuteSingleEnvironment(RENDER_NS::IRenderCommandList& cmdList,
83         BASE_NS::array_view<const RenderCamera::Environment> environments, uint32_t idx);
84 
85     static constexpr uint64_t INVALID_CAM_ID { 0xFFFFFFFFffffffff };
86     // Json resources which might need re-fetching
87     struct JsonInputs {
88         RENDER_NS::RenderNodeGraphInputs::RenderDataStore renderDataStore;
89     };
90     JsonInputs jsonInputs_;
91 
92     struct BuiltInVariables {
93         RENDER_NS::RenderHandle defBlackImage;
94         RENDER_NS::RenderHandle defSampler;
95     };
96     BuiltInVariables builtInVariables_;
97     DefaultImagesAndSamplers defaultImagesAndSamplers_;
98 
99     RENDER_NS::RenderNodeHandles::InputRenderPass inputRenderPass_;
100     RENDER_NS::RenderNodeHandles::InputResources inputResources_;
101     RENDER_NS::RenderHandle shader_;
102     RENDER_NS::PipelineLayout pipelineLayout_;
103     RENDER_NS::RenderHandle psoHandle_;
104 
105     RENDER_NS::RenderHandle environmentUbo_;
106 
107     struct AllEnvSets {
108         BASE_NS::vector<RENDER_NS::IDescriptorSetBinder::Ptr> localSets;
109     };
110     BASE_NS::vector<AllEnvSets> allEnvSets_;
111 
112     SceneRenderDataStores stores_;
113 
114     bool valid_ { false };
115     bool hasBlendEnvironments_ { false };
116     bool hasInitializedShaderData_ { false };
117 
118     struct OwnedEnvironmentTargetData {
119         uint64_t id { 0ULL };
120         RENDER_NS::RenderHandleReference handle;
121         bool usedThisFrame { false };
122     };
123     BASE_NS::vector<OwnedEnvironmentTargetData> envTargetData_;
124 };
125 CORE3D_END_NAMESPACE()
126 
127 #endif // CORE3D_RENDER__NODE__RENDER_NODE_DEFAULT_ENVIRONMENT_BLENDER_H
128