87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
// Copyright 2017 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef DAWN_DAWN_WSI_H_
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#define DAWN_DAWN_WSI_H_
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#include <dawn/webgpu.h>
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// Error message (or nullptr if there was no error)
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typedef const char* DawnSwapChainError;
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constexpr DawnSwapChainError DAWN_SWAP_CHAIN_NO_ERROR = nullptr;
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typedef struct {
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/// Backend-specific texture id/name/pointer
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union {
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void* ptr;
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uint64_t u64;
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uint32_t u32;
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} texture;
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} DawnSwapChainNextTexture;
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typedef struct {
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/// Initialize the swap chain implementation.
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/// (*wsiContext) is one of DawnWSIContext{D3D12,Metal,GL}
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void (*Init)(void* userData, void* wsiContext);
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/// Destroy the swap chain implementation.
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void (*Destroy)(void* userData);
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/// Configure/reconfigure the swap chain.
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DawnSwapChainError (*Configure)(void* userData,
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WGPUTextureFormat format,
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WGPUTextureUsage allowedUsage,
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uint32_t width,
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uint32_t height);
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/// Acquire the next texture from the swap chain.
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DawnSwapChainError (*GetNextTexture)(void* userData, DawnSwapChainNextTexture* nextTexture);
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/// Present the last acquired texture to the screen.
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DawnSwapChainError (*Present)(void* userData);
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/// Each function is called with userData as its first argument.
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void* userData;
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/// For use by the D3D12 and Vulkan backends: how the swapchain will use the texture.
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WGPUTextureUsage textureUsage;
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} DawnSwapChainImplementation;
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#if defined(DAWN_ENABLE_BACKEND_D3D12) && defined(__cplusplus)
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struct DawnWSIContextD3D12 {
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WGPUDevice device = nullptr;
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};
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#endif
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#if defined(DAWN_ENABLE_BACKEND_METAL) && defined(__OBJC__)
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# import <Metal/Metal.h>
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struct DawnWSIContextMetal {
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id<MTLDevice> device = nil;
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id<MTLCommandQueue> queue = nil;
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};
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#endif
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#ifdef DAWN_ENABLE_BACKEND_OPENGL
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typedef struct {
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} DawnWSIContextGL;
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#endif
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#ifdef DAWN_ENABLE_BACKEND_VULKAN
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typedef struct {
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} DawnWSIContextVulkan;
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#endif
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#endif // DAWN_DAWN_WSI_H
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