| // 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. |
| |
| #include "dawn_native/BlendState.h" |
| |
| #include "dawn_native/Device.h" |
| |
| namespace dawn_native { |
| |
| // BlendStateBase |
| |
| BlendStateBase::BlendStateBase(BlendStateBuilder* builder) |
| : ObjectBase(builder->GetDevice()), mBlendInfo(builder->mBlendInfo) { |
| } |
| |
| const BlendStateBase::BlendInfo& BlendStateBase::GetBlendInfo() const { |
| return mBlendInfo; |
| } |
| |
| // BlendStateBuilder |
| |
| enum BlendStateSetProperties { |
| BLEND_STATE_PROPERTY_BLEND_ENABLED = 0x1, |
| BLEND_STATE_PROPERTY_ALPHA_BLEND = 0x2, |
| BLEND_STATE_PROPERTY_COLOR_BLEND = 0x4, |
| BLEND_STATE_PROPERTY_COLOR_WRITE_MASK = 0x08, |
| }; |
| |
| BlendStateBuilder::BlendStateBuilder(DeviceBase* device) : Builder(device) { |
| } |
| |
| BlendStateBase* BlendStateBuilder::GetResultImpl() { |
| return GetDevice()->CreateBlendState(this); |
| } |
| |
| void BlendStateBuilder::SetBlendEnabled(bool blendEnabled) { |
| if ((mPropertiesSet & BLEND_STATE_PROPERTY_BLEND_ENABLED) != 0) { |
| HandleError("Blend enabled property set multiple times"); |
| return; |
| } |
| |
| mPropertiesSet |= BLEND_STATE_PROPERTY_BLEND_ENABLED; |
| |
| mBlendInfo.blendEnabled = blendEnabled; |
| } |
| |
| void BlendStateBuilder::SetAlphaBlend(dawn::BlendOperation blendOperation, |
| dawn::BlendFactor srcFactor, |
| dawn::BlendFactor dstFactor) { |
| if ((mPropertiesSet & BLEND_STATE_PROPERTY_ALPHA_BLEND) != 0) { |
| HandleError("Alpha blend property set multiple times"); |
| return; |
| } |
| |
| mPropertiesSet |= BLEND_STATE_PROPERTY_ALPHA_BLEND; |
| |
| mBlendInfo.alphaBlend = {blendOperation, srcFactor, dstFactor}; |
| } |
| |
| void BlendStateBuilder::SetColorBlend(dawn::BlendOperation blendOperation, |
| dawn::BlendFactor srcFactor, |
| dawn::BlendFactor dstFactor) { |
| if ((mPropertiesSet & BLEND_STATE_PROPERTY_COLOR_BLEND) != 0) { |
| HandleError("Color blend property set multiple times"); |
| return; |
| } |
| |
| mPropertiesSet |= BLEND_STATE_PROPERTY_COLOR_BLEND; |
| |
| mBlendInfo.colorBlend = {blendOperation, srcFactor, dstFactor}; |
| } |
| |
| void BlendStateBuilder::SetColorWriteMask(dawn::ColorWriteMask colorWriteMask) { |
| if ((mPropertiesSet & BLEND_STATE_PROPERTY_COLOR_WRITE_MASK) != 0) { |
| HandleError("Color write mask property set multiple times"); |
| return; |
| } |
| |
| mPropertiesSet |= BLEND_STATE_PROPERTY_COLOR_WRITE_MASK; |
| |
| mBlendInfo.colorWriteMask = colorWriteMask; |
| } |
| } // namespace dawn_native |