dawn_platform.h | Explore in Territory

// Copyright 2018 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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#ifndef SRC_DAWN_NATIVE_DAWN_PLATFORM_H_
#define SRC_DAWN_NATIVE_DAWN_PLATFORM_H_

// Use webgpu_cpp to have the enum and bitfield definitions
#include <webgpu/webgpu_cpp.h>

#include "dawn/native/dawn_platform_autogen.h"

namespace dawn::native {

// kEnumCount is a constant specifying the number of enums in a WebGPU enum type,
// if the enums are contiguous, making it suitable for iteration.
// It is defined in dawn_platform_autogen.h
kEnumCount;

// Extra buffer usages
// Add an extra buffer usage and an extra binding type for binding the buffers with QueryResolve
// usage as storage buffer in the internal pipeline.
static constexpr wgpu::BufferUsage kInternalStorageBuffer = …;

// Add an extra buffer usage (readonly storage buffer usage) for render pass resource tracking
static constexpr wgpu::BufferUsage kReadOnlyStorageBuffer = …;

// Add an extra buffer usage (copy-src buffer usage) that can be combined with MapRead
static constexpr wgpu::BufferUsage kInternalCopySrcBuffer = …;

// Add an extra buffer usage (indirect-for-backend-resource-tracking) for backend resource
// tracking. We won't do buffer usage transitions when the new buffer usage only contains
// wgpu::BufferUsage::Indirect and doesn't contain kInternalIndirectBufferForBackendResourceTracking
// on the backends.
static constexpr wgpu::BufferUsage kIndirectBufferForBackendResourceTracking = …;

// Define `kIndirectBufferForFrontendValidation` as an alias of wgpu::BufferUsage::Indirect just
// for front-end validation on the indirect buffer usage.
static constexpr wgpu::BufferUsage kIndirectBufferForFrontendValidation = …;

// Extra texture usages
// Usage to denote an extra tag value used in system specific ways.
//  - Used to store that attachments are used more than once in PassResourceUsageTracker.
//  - Used to store mixed read-only vs. not depth-stencil layouts in Vulkan.
static constexpr wgpu::TextureUsage kReservedTextureUsage = …;

// Extrea texture usages for textures that are used with the presentation engine.
// Acquire is that Dawn is acquiring the texture from the presentation engine while Release is Dawn
// releasing is to the presentation engine.
static constexpr wgpu::TextureUsage kPresentAcquireTextureUsage = …;
static constexpr wgpu::TextureUsage kPresentReleaseTextureUsage = …;

// Add an extra texture usage (readonly render attachment usage) for render pass resource
// tracking
static constexpr wgpu::TextureUsage kReadOnlyRenderAttachment = …;

// Add an extra texture usage (readonly storage texture usage) for resource tracking
static constexpr wgpu::TextureUsage kReadOnlyStorageTexture = …;

// Add an extra texture usage (writeonly storage texture usage) for resource tracking
static constexpr wgpu::TextureUsage kWriteOnlyStorageTexture = …;

// Add an extra texture usage (load resolve texture to MSAA) for render pass resource tracking
static constexpr wgpu::TextureUsage kResolveAttachmentLoadingUsage = …;

// Extra BufferBindingType for internal storage buffer binding.
static constexpr wgpu::BufferBindingType kInternalStorageBufferBinding = …;

// Extra TextureSampleType for sampling from a resolve attachment.
static constexpr wgpu::TextureSampleType kInternalResolveAttachmentSampleType = …;

// Extra TextureViewDimension for input attachment.
static constexpr wgpu::TextureViewDimension kInternalInputAttachmentDim = …;

static constexpr uint32_t kEnumPrefixMask = …;
static constexpr uint32_t kDawnEnumPrefix = …;

struct Rect2D { … };

}  // namespace dawn::native

#endif  // SRC_DAWN_NATIVE_DAWN_PLATFORM_H_
chromium/third_party/dawn/src/dawn/native/dawn_platform.h
