OpenSubdiv/opensubdiv/osd/mtlPatchTable.mm
David G Yu 291eff0bed Mtl implementation whitespace fixes
Fixed numerous whitespace inconsistencies and violations
in the core osd metal implementation and examples.
2019-05-22 18:00:36 -07:00

143 lines
4.8 KiB
Plaintext

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