mirror of https://github.com/axmolengine/axmol.git
108 lines
4.4 KiB
Plaintext
108 lines
4.4 KiB
Plaintext
/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "BlendStateMTL.h"
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CC_BACKEND_BEGIN
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namespace
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{
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MTLColorWriteMask toMTLColorWriteMask(ColorWriteMask mask)
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{
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switch (mask) {
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case ColorWriteMask::NONE:
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return MTLColorWriteMaskNone;
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case ColorWriteMask::RED:
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return MTLColorWriteMaskRed;
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case ColorWriteMask::GREEN:
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return MTLColorWriteMaskGreen;
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case ColorWriteMask::BLUE:
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return MTLColorWriteMaskBlue;
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case ColorWriteMask::ALPHA:
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return MTLColorWriteMaskAlpha;
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case ColorWriteMask::ALL:
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return MTLColorWriteMaskAll;
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}
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}
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MTLBlendFactor toMTLBlendFactor(BlendFactor factor)
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{
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switch (factor) {
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case BlendFactor::ZERO:
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return MTLBlendFactorZero;
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case BlendFactor::ONE:
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return MTLBlendFactorOne;
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case BlendFactor::SRC_COLOR:
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return MTLBlendFactorSourceColor;
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case BlendFactor::ONE_MINUS_SRC_COLOR:
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return MTLBlendFactorOneMinusSourceColor;
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case BlendFactor::SRC_ALPHA:
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return MTLBlendFactorSourceAlpha;
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case BlendFactor::ONE_MINUS_SRC_ALPHA:
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return MTLBlendFactorOneMinusSourceAlpha;
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case BlendFactor::DST_COLOR:
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return MTLBlendFactorDestinationColor;
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case BlendFactor::ONE_MINUS_DST_COLOR:
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return MTLBlendFactorOneMinusDestinationColor;
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case BlendFactor::DST_ALPHA:
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return MTLBlendFactorDestinationAlpha;
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case BlendFactor::ONE_MINUS_DST_ALPHA:
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return MTLBlendFactorOneMinusDestinationAlpha;
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case BlendFactor::SRC_ALPHA_SATURATE:
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return MTLBlendFactorSourceAlphaSaturated;
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case BlendFactor::BLEND_CLOLOR:
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return MTLBlendFactorBlendColor;
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}
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}
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MTLBlendOperation toMTLBlendOperation(BlendOperation operation)
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{
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switch (operation) {
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case BlendOperation::ADD:
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return MTLBlendOperationAdd;
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case BlendOperation::SUBTRACT:
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return MTLBlendOperationSubtract;
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case BlendOperation::RESERVE_SUBTRACT:
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return MTLBlendOperationReverseSubtract;
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}
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}
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}
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BlendStateMTL::BlendStateMTL(const BlendDescriptor& descriptor)
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{
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_blendDescriptorMTL.writeMask = toMTLColorWriteMask(descriptor.writeMask);
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_blendDescriptorMTL.blendEnabled = descriptor.blendEnabled;
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_blendDescriptorMTL.rgbBlendOperation = toMTLBlendOperation(descriptor.rgbBlendOperation);
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_blendDescriptorMTL.alphaBlendOperation = toMTLBlendOperation(descriptor.alphaBlendOperation);
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_blendDescriptorMTL.sourceRGBBlendFactor = toMTLBlendFactor(descriptor.sourceRGBBlendFactor);
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_blendDescriptorMTL.destinationRGBBlendFactor = toMTLBlendFactor(descriptor.destinationRGBBlendFactor);
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_blendDescriptorMTL.sourceAlphaBlendFactor = toMTLBlendFactor(descriptor.sourceAlphaBlendFactor);
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_blendDescriptorMTL.destinationAlphaBlendFactor = toMTLBlendFactor(descriptor.destinationAlphaBlendFactor);
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}
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CC_BACKEND_END
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