1 /*
2  * Copyright (c) 2024 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;
GetExecuteFlags()40     ExecuteFlags GetExecuteFlags() const override
41     {
42         return 0U;
43     }
44 
45     // for plugin / factory interface
46     static constexpr BASE_NS::Uid UID { "f1dc030b-1081-4ca5-a195-1d8bfc1a036c" };
47     static constexpr char const* TYPE_NAME = "RenderNodeBackBuffer";
48     static constexpr IRenderNode::BackendFlags BACKEND_FLAGS = IRenderNode::BackendFlagBits::BACKEND_FLAG_BITS_DEFAULT;
49     static constexpr IRenderNode::ClassType CLASS_TYPE = IRenderNode::ClassType::CLASS_TYPE_NODE;
50     static IRenderNode* Create();
51     static void Destroy(IRenderNode* instance);
52 
53 private:
54     IRenderNodeContextManager* renderNodeContextMgr_ { nullptr };
55 
56     void CheckForPsoSpecilization(const PostProcessConfiguration& postProcessConfiguration);
57     PostProcessConfiguration GetPostProcessConfiguration(const IRenderNodeRenderDataStoreManager& dataStoreMgr);
58     RenderHandle UpdateColorAttachmentSize();
59     void ParseRenderNodeInputs();
60 
61     // Json resources which might need re-fetching
62     struct JsonInputs {
63         RenderNodeGraphInputs::InputRenderPass renderPass;
64         RenderNodeGraphInputs::InputResources resources;
65 
66         RenderNodeGraphInputs::RenderDataStore renderDataStore;
67 
68         bool hasChangeableRenderPassHandles { false };
69         bool hasChangeableResourceHandles { false };
70     };
71     JsonInputs jsonInputs_;
72 
73     RenderNodeHandles::InputRenderPass inputRenderPass_;
74     RenderNodeHandles::InputResources inputResources_;
75     RenderHandle shader_;
76     RenderHandle psoHandle_;
77     RenderPass renderPass_;
78 
79     struct BackBufferDefinition {
80         uint32_t width { 0 };
81         uint32_t height { 0 };
82         BASE_NS::Format format { BASE_NS::Format::BASE_FORMAT_UNDEFINED };
83     };
84     BackBufferDefinition currentBackBuffer_;
85     ViewportDesc currentViewportDesc_;
86     ScissorDesc currentScissorDesc_;
87 
88     RenderPostProcessConfiguration currentRenderPostProcessConfiguration_;
89     PipelineLayout pipelineLayout_;
90     IPipelineDescriptorSetBinder::Ptr pipelineDescriptorSetBinder_;
91 };
92 RENDER_END_NAMESPACE()
93 
94 #endif // CORE__RENDER__NODE__RENDER_NODE_BACK_BUFFER_H
95