mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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99 lines
2.9 KiB
Plaintext
99 lines
2.9 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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#include "../osd/mtlVertexBuffer.h"
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#include <Metal/Metal.h>
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#include <TargetConditionals.h>
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namespace OpenSubdiv
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{
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namespace OPENSUBDIV_VERSION
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{
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namespace Osd
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{
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CPUMTLVertexBuffer::CPUMTLVertexBuffer(int numElements, int numVertices)
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:
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_numElements(numElements), _numVertices(numVertices),
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_buffer(nullptr), _dirty(true)
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{
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}
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bool CPUMTLVertexBuffer::allocate(MTLContext* context)
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{
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#if TARGET_OS_IOS || TARGET_OS_TV
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_buffer = [context->device newBufferWithLength: _numElements * _numVertices * sizeof(float) options:MTLResourceOptionCPUCacheModeDefault];
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#elif TARGET_OS_OSX
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_buffer = [context->device newBufferWithLength: _numElements * _numVertices * sizeof(float) options:MTLResourceStorageModeManaged];
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#endif
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if(_buffer == nil)
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return false;
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_dirty = true;
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_buffer.label = @"OSD VertexBuffer";
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return true;
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}
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CPUMTLVertexBuffer* CPUMTLVertexBuffer::Create(int numElements, int numVertices, MTLContext* context)
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{
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auto instance = new CPUMTLVertexBuffer(numElements, numVertices);
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if(!instance->allocate(context))
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{
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delete instance;
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return nullptr;
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}
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return instance;
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}
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void CPUMTLVertexBuffer::UpdateData(const float* src, int startVertex, int numVertices, MTLContext* context)
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{
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_dirty = true;
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memcpy(((float*)_buffer.contents) + startVertex * _numElements, src, _numElements * numVertices * sizeof(float));
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}
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float* CPUMTLVertexBuffer::BindCpuBuffer()
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{
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_dirty = true;
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return (float*)_buffer.contents;
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}
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id<MTLBuffer> CPUMTLVertexBuffer::BindMTLBuffer(MTLContext* context)
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{
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#if TARGET_OS_OSX
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if(_dirty)
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[_buffer didModifyRange:NSMakeRange(0, _buffer.length)];
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_dirty = false;
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#endif
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return _buffer;
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}
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} //end namepsace Osd
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} //end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} //end namespace OpenSubdiv
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