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// Copyright 2017 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_INPUTSTATE_H_
#define DAWNNATIVE_INPUTSTATE_H_
#include "common/Constants.h"
#include "dawn_native/Builder.h"
#include "dawn_native/Forward.h"
#include "dawn_native/ObjectBase.h"
#include "dawn_native/dawn_platform.h"
#include <array>
#include <bitset>
namespace dawn_native {
size_t IndexFormatSize(dawn::IndexFormat format);
uint32_t VertexFormatNumComponents(dawn::VertexFormat format);
size_t VertexFormatComponentSize(dawn::VertexFormat format);
size_t VertexFormatSize(dawn::VertexFormat format);
class InputStateBase : public ObjectBase {
public:
InputStateBase(InputStateBuilder* builder);
struct AttributeInfo {
uint32_t inputSlot;
dawn::VertexFormat format;
uint32_t offset;
};
struct InputInfo {
uint32_t stride;
dawn::InputStepMode stepMode;
};
const std::bitset<kMaxVertexAttributes>& GetAttributesSetMask() const;
const AttributeInfo& GetAttribute(uint32_t location) const;
const std::bitset<kMaxVertexInputs>& GetInputsSetMask() const;
const InputInfo& GetInput(uint32_t slot) const;
private:
std::bitset<kMaxVertexAttributes> mAttributesSetMask;
std::array<AttributeInfo, kMaxVertexAttributes> mAttributeInfos;
std::bitset<kMaxVertexInputs> mInputsSetMask;
std::array<InputInfo, kMaxVertexInputs> mInputInfos;
};
class InputStateBuilder : public Builder<InputStateBase> {
public:
InputStateBuilder(DeviceBase* device);
// Dawn API
void SetAttribute(const VertexAttributeDescriptor* attribute);
void SetInput(const VertexInputDescriptor* input);
private:
friend class InputStateBase;
InputStateBase* GetResultImpl() override;
std::bitset<kMaxVertexAttributes> mAttributesSetMask;
std::array<InputStateBase::AttributeInfo, kMaxVertexAttributes> mAttributeInfos;
std::bitset<kMaxVertexInputs> mInputsSetMask;
std::array<InputStateBase::InputInfo, kMaxVertexInputs> mInputInfos;
};
} // namespace dawn_native
#endif // DAWNNATIVE_INPUTSTATE_H_