mirror of https://github.com/axmolengine/axmol.git
137 lines
5.2 KiB
Plaintext
137 lines
5.2 KiB
Plaintext
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/****************************************************************************
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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 "DepthStencilStateMTL.h"
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CC_BACKEND_BEGIN
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namespace
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{
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MTLCompareFunction toMTLCompareFunction(CompareFunction compareFunction)
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{
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MTLCompareFunction ret = MTLCompareFunctionNever;
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switch (compareFunction) {
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case CompareFunction::NEVER:
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ret = MTLCompareFunctionNever;
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break;
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case CompareFunction::LESS:
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ret = MTLCompareFunctionLess;
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break;
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case CompareFunction::LESS_EQUAL:
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ret = MTLCompareFunctionLessEqual;
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break;
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case CompareFunction::GREATER:
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ret = MTLCompareFunctionGreater;
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break;
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case CompareFunction::GREATER_EQUAL:
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ret = MTLCompareFunctionGreaterEqual;
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break;
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case CompareFunction::EQUAL:
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ret = MTLCompareFunctionEqual;
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break;
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case CompareFunction::NOT_EQUAL:
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ret = MTLCompareFunctionNotEqual;
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break;
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case CompareFunction::ALWAYS:
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ret = MTLCompareFunctionAlways;
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break;
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default:
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assert(false);
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break;
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}
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return ret;
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}
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MTLStencilOperation toMTLStencilOperation(StencilOperation operation)
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{
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MTLStencilOperation ret = MTLStencilOperationKeep;
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switch (operation) {
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case StencilOperation::KEEP:
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ret = MTLStencilOperationKeep;
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break;
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case StencilOperation::ZERO:
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ret = MTLStencilOperationZero;
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break;
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case StencilOperation::REPLACE:
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ret = MTLStencilOperationReplace;
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break;
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case StencilOperation::INVERT:
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ret = MTLStencilOperationInvert;
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break;
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case StencilOperation::INCREMENT_WRAP:
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ret = MTLStencilOperationIncrementWrap;
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break;
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case StencilOperation::DECREMENT_WRAP:
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ret = MTLStencilOperationDecrementWrap;
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break;
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default:
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assert(false);
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break;
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}
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return ret;
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}
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void setMTLStencilDescriptor(MTLStencilDescriptor* stencilDescriptor, const StencilDescriptor& descriptor)
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{
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stencilDescriptor.stencilFailureOperation = toMTLStencilOperation(descriptor.stencilFailureOperation);
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stencilDescriptor.depthFailureOperation = toMTLStencilOperation(descriptor.depthFailureOperation);
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stencilDescriptor.depthStencilPassOperation = toMTLStencilOperation(descriptor.depthStencilPassOperation);
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stencilDescriptor.stencilCompareFunction = toMTLCompareFunction(descriptor.stencilCompareFunction);
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stencilDescriptor.readMask = descriptor.readMask;
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stencilDescriptor.writeMask = descriptor.writeMask;
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}
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}
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DepthStencilStateMTL::DepthStencilStateMTL(id<MTLDevice> mtlDevice, const DepthStencilDescriptor& descriptor)
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: DepthStencilState(descriptor)
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{
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if (!descriptor.depthTestEnabled && !descriptor.stencilTestEnabled && !descriptor.depthWriteEnabled)
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return;
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MTLDepthStencilDescriptor* mtlDescriptor = [[MTLDepthStencilDescriptor alloc] init];
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if (descriptor.depthTestEnabled)
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mtlDescriptor.depthCompareFunction = toMTLCompareFunction(descriptor.depthCompareFunction);
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else
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mtlDescriptor.depthCompareFunction = MTLCompareFunctionAlways;
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mtlDescriptor.depthWriteEnabled = descriptor.depthWriteEnabled;
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if (descriptor.stencilTestEnabled)
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{
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setMTLStencilDescriptor(mtlDescriptor.frontFaceStencil, descriptor.frontFaceStencil);
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setMTLStencilDescriptor(mtlDescriptor.backFaceStencil, descriptor.backFaceStencil);
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}
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_mtlDepthStencilState = [mtlDevice newDepthStencilStateWithDescriptor:mtlDescriptor];
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[mtlDescriptor release];
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}
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DepthStencilStateMTL::~DepthStencilStateMTL()
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{
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[_mtlDepthStencilState release];
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}
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CC_BACKEND_END
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