mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-05 01:10:05 +00:00
142 lines
4.8 KiB
Plaintext
142 lines
4.8 KiB
Plaintext
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache 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 Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#import "../osd/mtlPatchTable.h"
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#import <Metal/Metal.h>
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#import "../far/patchTable.h"
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#import "../osd/cpuPatchTable.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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MTLPatchTable::MTLPatchTable()
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:
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_indexBuffer(nil),
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_patchParamBuffer(nil),
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_varyingPatchIndexBuffer(nil)
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{
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}
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MTLPatchTable::~MTLPatchTable()
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{
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}
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static id<MTLBuffer> createBuffer(const void* data, const size_t length,
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MTLContext* context)
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{
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if(length == 0)
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return nil;
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#if TARGET_OS_IOS || TARGET_OS_TV
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return [context->device newBufferWithBytes:data length:length options:MTLResourceOptionCPUCacheModeDefault];
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#elif TARGET_OS_OSX
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@autoreleasepool {
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auto cmdBuf = [context->commandQueue commandBuffer];
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auto blitEncoder = [cmdBuf blitCommandEncoder];
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auto stageBuffer = [context->device newBufferWithBytes:data length:length options:MTLResourceOptionCPUCacheModeDefault];
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auto finalBuffer = [context->device newBufferWithLength:length options:MTLResourceStorageModePrivate];
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[blitEncoder copyFromBuffer:stageBuffer sourceOffset:0 toBuffer:finalBuffer destinationOffset:0 size:length];
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[blitEncoder endEncoding];
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[cmdBuf commit];
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[cmdBuf waitUntilCompleted];
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#if !__has_feature(objc_arc)
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[stageBuffer release];
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#endif
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return finalBuffer;
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}
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#endif
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}
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MTLPatchTable* MTLPatchTable::Create(const Far::PatchTable *farPatchTable, MTLContext* context)
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{
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auto patchTable = new MTLPatchTable();
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if(patchTable->allocate(farPatchTable, context))
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return patchTable;
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delete patchTable;
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assert(0 && "MTLPatchTable Creation Failed");
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return nullptr;
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}
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bool MTLPatchTable::allocate(Far::PatchTable const *farPatchTable, MTLContext* context)
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{
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CpuPatchTable cpuTable(farPatchTable);
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auto numPatchArrays = cpuTable.GetNumPatchArrays();
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auto indexSize = cpuTable.GetPatchIndexSize();
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auto patchParamSize = cpuTable.GetPatchParamSize();
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_patchArrays.assign(cpuTable.GetPatchArrayBuffer(), cpuTable.GetPatchArrayBuffer() + numPatchArrays);
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_indexBuffer = createBuffer(cpuTable.GetPatchIndexBuffer(), indexSize * sizeof(unsigned), context);
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if(_indexBuffer == nil)
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return false;
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_indexBuffer.label = @"OSD PatchIndexBuffer";
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_patchParamBuffer = createBuffer(cpuTable.GetPatchParamBuffer(), patchParamSize * sizeof(PatchParam), context);
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if(_patchParamBuffer == nil)
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return false;
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_patchParamBuffer.label = @"OSD PatchParamBuffer";
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_varyingPatchArrays.assign(cpuTable.GetVaryingPatchArrayBuffer(), cpuTable.GetVaryingPatchArrayBuffer() + numPatchArrays);
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_varyingPatchIndexBuffer = createBuffer(cpuTable.GetVaryingPatchIndexBuffer(), sizeof(int) * cpuTable.GetVaryingPatchIndexSize(), context);
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if(_varyingPatchIndexBuffer == nil && cpuTable.GetVaryingPatchIndexSize() > 0)
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return false;
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auto numFVarChannels = cpuTable.GetNumFVarChannels();
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_fvarPatchArrays.resize(numFVarChannels);
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_fvarIndexBuffers.resize(numFVarChannels);
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_fvarParamBuffers.resize(numFVarChannels);
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for(auto fvc = 0; fvc < numFVarChannels; fvc++)
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{
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_fvarPatchArrays[fvc].assign(cpuTable.GetFVarPatchArrayBuffer(fvc), cpuTable.GetFVarPatchArrayBuffer(fvc) + numPatchArrays);
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_fvarIndexBuffers[fvc] = createBuffer(cpuTable.GetFVarPatchIndexBuffer(fvc), cpuTable.GetFVarPatchIndexSize(fvc) * sizeof(int), context);
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if(_fvarIndexBuffers[fvc] == nil)
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return false;
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_fvarParamBuffers[fvc] = createBuffer(cpuTable.GetFVarPatchParamBuffer(fvc), cpuTable.GetFVarPatchParamSize(fvc) * sizeof(PatchParam), context);
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if(_fvarParamBuffers[fvc] == nil)
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return false;
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}
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return true;
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}
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} //end namespace Osd
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} //end namespace OPENSUBDIV_VERSION
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} //end namespace OpenSubdiv
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