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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 RENDER_RENDER__NODE__RENDER_NODE_BACK_BUFFER_H
17 #define RENDER_RENDER__NODE__RENDER_NODE_BACK_BUFFER_H
18 
19 #include <base/containers/string.h>
20 #include <base/util/uid.h>
21 #include <render/datastore/render_data_store_render_pods.h>
22 #include <render/device/pipeline_state_desc.h>
23 #include <render/namespace.h>
24 #include <render/nodecontext/intf_pipeline_descriptor_set_binder.h>
25 #include <render/nodecontext/intf_render_node.h>
26 #include <render/render_data_structures.h>
27 #include <render/resource_handle.h>
28 
29 RENDER_BEGIN_NAMESPACE()
30 class IRenderNodeRenderDataStoreManager;
31 
32 class RenderNodeBackBuffer final : public IRenderNode {
33 public:
34     RenderNodeBackBuffer() = default;
35     ~RenderNodeBackBuffer() override = default;
36 
37     void InitNode(IRenderNodeContextManager& renderNodeContextMgr) override;
PreExecuteFrame()38     void PreExecuteFrame() override {};
39     void ExecuteFrame(IRenderCommandList& cmdList) override;
40 
41     // for plugin / factory interface
42     static constexpr BASE_NS::Uid UID { "6b15f334-872b-4963-acc8-691b30de7501" };
43     static constexpr char const* TYPE_NAME = "RenderNodeBackBuffer";
44     static constexpr IRenderNode::BackendFlags BACKEND_FLAGS = IRenderNode::BackendFlagBits::BACKEND_FLAG_BITS_DEFAULT;
45     static constexpr IRenderNode::ClassType CLASS_TYPE = IRenderNode::ClassType::CLASS_TYPE_NODE;
46     static IRenderNode* Create();
47     static void Destroy(IRenderNode* instance);
48 
49 private:
50     IRenderNodeContextManager* renderNodeContextMgr_ { nullptr };
51 
52     void CheckForPsoSpecilization(const PostProcessConfiguration& postProcessConfiguration);
53     PostProcessConfiguration GetPostProcessConfiguration(const IRenderNodeRenderDataStoreManager& dataStoreMgr);
54     RenderHandle UpdateColorAttachmentSize();
55     void ParseRenderNodeInputs();
56 
57     // Json resources which might need re-fetching
58     struct JsonInputs {
59         RenderNodeGraphInputs::InputRenderPass renderPass;
60         RenderNodeGraphInputs::InputResources resources;
61 
62         RenderNodeGraphInputs::RenderDataStore renderDataStore;
63 
64         bool hasChangeableRenderPassHandles { false };
65         bool hasChangeableResourceHandles { false };
66     };
67     JsonInputs jsonInputs_;
68 
69     RenderNodeHandles::InputRenderPass inputRenderPass_;
70     RenderNodeHandles::InputResources inputResources_;
71     RenderHandle shader_;
72     RenderHandle psoHandle_;
73     RenderPass renderPass_;
74 
75     struct BackBufferDefinition {
76         uint32_t width { 0 };
77         uint32_t height { 0 };
78         BASE_NS::Format format { BASE_NS::Format::BASE_FORMAT_UNDEFINED };
79     };
80     BackBufferDefinition currentBackBuffer_;
81     ViewportDesc currentViewportDesc_;
82     ScissorDesc currentScissorDesc_;
83 
84     RenderPostProcessConfiguration currentRenderPostProcessConfiguration_;
85     PipelineLayout pipelineLayout_;
86     IPipelineDescriptorSetBinder::Ptr pipelineDescriptorSetBinder_;
87 };
88 RENDER_END_NAMESPACE()
89 
90 #endif // CORE__RENDER__NODE__RENDER_NODE_BACK_BUFFER_H
91