76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
// Copyright 2017 The NXT 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 BACKEND_BLENDSTATE_H_
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#define BACKEND_BLENDSTATE_H_
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#include "backend/Builder.h"
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#include "backend/Forward.h"
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#include "backend/RefCounted.h"
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#include "nxt/nxtcpp.h"
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namespace backend {
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class BlendStateBase : public RefCounted {
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public:
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BlendStateBase(BlendStateBuilder* builder);
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struct BlendInfo {
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struct BlendOpFactor {
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nxt::BlendOperation operation = nxt::BlendOperation::Add;
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nxt::BlendFactor srcFactor = nxt::BlendFactor::One;
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nxt::BlendFactor dstFactor = nxt::BlendFactor::Zero;
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};
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bool blendEnabled = false;
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BlendOpFactor alphaBlend;
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BlendOpFactor colorBlend;
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nxt::ColorWriteMask colorWriteMask = nxt::ColorWriteMask::All;
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};
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const BlendInfo& GetBlendInfo() const;
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private:
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BlendInfo mBlendInfo;
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};
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class BlendStateBuilder : public Builder<BlendStateBase> {
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public:
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BlendStateBuilder(DeviceBase* device);
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// NXT API
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void SetBlendEnabled(bool blendEnabled);
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void SetAlphaBlend(nxt::BlendOperation blendOperation,
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nxt::BlendFactor srcFactor,
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nxt::BlendFactor dstFactor);
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void SetColorBlend(nxt::BlendOperation blendOperation,
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nxt::BlendFactor srcFactor,
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nxt::BlendFactor dstFactor);
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void SetColorWriteMask(nxt::ColorWriteMask colorWriteMask);
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private:
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friend class BlendStateBase;
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BlendStateBase* GetResultImpl() override;
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int mPropertiesSet = 0;
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BlendStateBase::BlendInfo mBlendInfo;
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};
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} // namespace backend
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#endif // BACKEND_BLENDSTATE_H_
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