111 lines
3.4 KiB
C++
111 lines
3.4 KiB
C++
// Copyright 2019 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 DAWNNATIVE_FORMAT_H_
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#define DAWNNATIVE_FORMAT_H_
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#include "dawn_native/dawn_platform.h"
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#include "common/ityp_bitset.h"
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#include "dawn_native/EnumClassBitmasks.h"
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#include "dawn_native/Error.h"
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#include <array>
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namespace dawn_native {
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enum class Aspect : uint8_t;
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class DeviceBase;
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// This mirrors wgpu::TextureComponentType as a bitmask instead.
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enum class ComponentTypeBit : uint8_t {
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None = 0x0,
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Float = 0x1,
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Sint = 0x2,
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Uint = 0x4,
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DepthComparison = 0x8,
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};
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// Converts an wgpu::TextureComponentType to its bitmask representation.
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ComponentTypeBit ToComponentTypeBit(wgpu::TextureComponentType type);
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struct TexelBlockInfo {
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uint32_t byteSize;
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uint32_t width;
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uint32_t height;
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};
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struct AspectInfo {
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TexelBlockInfo block;
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wgpu::TextureComponentType baseType;
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ComponentTypeBit supportedComponentTypes;
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};
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// The number of formats Dawn knows about. Asserts in BuildFormatTable ensure that this is the
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// exact number of known format.
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static constexpr size_t kKnownFormatCount = 53;
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struct Format;
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using FormatTable = std::array<Format, kKnownFormatCount>;
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// A wgpu::TextureFormat along with all the information about it necessary for validation.
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struct Format {
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wgpu::TextureFormat format;
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bool isRenderable;
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bool isCompressed;
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// A format can be known but not supported because it is part of a disabled extension.
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bool isSupported;
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bool supportsStorageUsage;
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Aspect aspects;
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bool IsColor() const;
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bool HasDepth() const;
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bool HasStencil() const;
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bool HasDepthOrStencil() const;
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const AspectInfo& GetAspectInfo(wgpu::TextureAspect aspect) const;
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const AspectInfo& GetAspectInfo(Aspect aspect) const;
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// The index of the format in the list of all known formats: a unique number for each format
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// in [0, kKnownFormatCount)
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size_t GetIndex() const;
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private:
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// The most common aspect: the color aspect for color texture, the depth aspect for
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// depth[-stencil] textures.
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AspectInfo firstAspect;
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friend FormatTable BuildFormatTable(const DeviceBase* device);
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};
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// Implementation details of the format table in the device.
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// Returns the index of a format in the FormatTable.
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size_t ComputeFormatIndex(wgpu::TextureFormat format);
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// Builds the format table with the extensions enabled on the device.
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FormatTable BuildFormatTable(const DeviceBase* device);
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} // namespace dawn_native
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namespace wgpu {
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template <>
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struct IsDawnBitmask<dawn_native::ComponentTypeBit> {
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static constexpr bool enable = true;
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};
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} // namespace wgpu
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#endif // DAWNNATIVE_FORMAT_H_
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