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// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef DAWNNATIVE_FORMAT_H_
#define DAWNNATIVE_FORMAT_H_
#include "dawn_native/dawn_platform.h"
#include "dawn_native/Error.h"
#include <array>
namespace dawn_native {
class DeviceBase;
// The number of formats Dawn knows about. Asserts in BuildFormatTable ensure that this is the
// exact number of known format.
static constexpr size_t kKnownFormatCount = 58;
// A dawn::TextureFormat along with all the information about it necessary for validation.
struct Format {
enum Aspect {
Color,
Depth,
Stencil,
DepthStencil,
};
dawn::TextureFormat format;
bool isRenderable;
bool isCompressed;
// A format can be known but not supported because it is part of a disabled extension.
bool isSupported;
Aspect aspect;
uint32_t blockByteSize;
uint32_t blockWidth;
uint32_t blockHeight;
bool IsColor() const;
bool HasDepth() const;
bool HasStencil() const;
bool HasDepthOrStencil() const;
// The index of the format in the list of all known formats: a unique number for each format
// in [0, kKnownFormatCount)
size_t GetIndex() const;
};
// Implementation details of the format table in the device.
using FormatTable = std::array<Format, kKnownFormatCount>;
// Returns the index of a format in the FormatTable.
size_t ComputeFormatIndex(dawn::TextureFormat format);
// Builds the format table with the extensions enabled on the device.
FormatTable BuildFormatTable(const DeviceBase* device);
} // namespace dawn_native
#endif // DAWNNATIVE_FORMAT_H_
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