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 GLES_NODE_CONTEXT_POOL_MANAGER_GLES_H
17 #define GLES_NODE_CONTEXT_POOL_MANAGER_GLES_H
18 
19 #include <base/containers/unordered_map.h>
20 #include <base/containers/vector.h>
21 #include <render/namespace.h>
22 
23 #include "device/gpu_resource_handle_util.h"
24 #include "nodecontext/node_context_pool_manager.h"
25 
26 RENDER_BEGIN_NAMESPACE()
27 class Device;
28 class DeviceGLES;
29 struct RenderCommandBeginRenderPass;
30 class GpuResourceManager;
31 
32 struct LowlevelFramebufferGL {
33     uint32_t width { 0 };
34     uint32_t height { 0 };
35     struct SubPassPair {
36         // one fbo per subpass, one resolve fbo per subpass (if needed)
37         uint32_t fbo { 0 };
38         uint32_t resolve { 0 };
39     };
40     BASE_NS::vector<SubPassPair> fbos;
41 };
42 struct ContextFramebufferCacheGLES {
43     // render pass hash (created in render command list) to frame buffer index
44     BASE_NS::unordered_map<uint64_t, uint32_t> renderPassHashToIndex;
45     // stores a frame index everytime the frame buffer is used (can be destroyed later on)
46     BASE_NS::vector<uint64_t> frameBufferFrameUseIndex;
47 
48     BASE_NS::vector<LowlevelFramebufferGL> framebuffers;
49 };
50 
51 class NodeContextPoolManagerGLES final : public NodeContextPoolManager {
52 public:
53     NodeContextPoolManagerGLES(Device& device, GpuResourceManager& gpuResourceManager);
54     ~NodeContextPoolManagerGLES();
55 
56     void BeginFrame() override;
57     void BeginBackendFrame() override;
58 
59     EngineResourceHandle GetFramebufferHandle(const RenderCommandBeginRenderPass& beginRenderPass);
60     const LowlevelFramebufferGL* GetFramebuffer(const EngineResourceHandle handle) const;
61 
62     void FilterRenderPass(RenderCommandBeginRenderPass& beginRenderPass);
63 #if ((RENDER_VALIDATION_ENABLED == 1) || (RENDER_VULKAN_VALIDATION_ENABLED == 1))
64     // not used ATM
SetValidationDebugName(const BASE_NS::string_view debugName)65     void SetValidationDebugName(const BASE_NS::string_view debugName) override {};
66 #endif
67 private:
68     DeviceGLES& device_;
69     GpuResourceManager& gpuResourceMgr_;
70     uint32_t bufferingIndex_ { 0 };
71     uint32_t bufferingCount_ { 0 };
72     ContextFramebufferCacheGLES framebufferCache_;
73     BASE_NS::vector<uint32_t> imageMap_;
74     bool multisampledRenderToTexture_ = false;
75     bool multiViewMultisampledRenderToTexture_ = false;
76     bool multiView_ = false;
77 
78 #if (RENDER_VALIDATION_ENABLED == 1)
79     uint64_t frameIndexFront_ { 0 };
80     uint64_t frameIndexBack_ { 0 };
81 #endif
82 };
83 RENDER_END_NAMESPACE()
84 
85 #endif // CORE__RENDER__GLES__NODE_CONTEXT_POOL_MANAGER_GLES_H
86