mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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101 lines
3.4 KiB
Plaintext
101 lines
3.4 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/mtlLegacyGregoryPatchTable.h"
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#include <Metal/Metal.h>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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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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@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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}
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MTLLegacyGregoryPatchTable::~MTLLegacyGregoryPatchTable()
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{
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}
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MTLLegacyGregoryPatchTable* MTLLegacyGregoryPatchTable::Create(const Far::PatchTable *farPatchTable,
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MTLContext* context)
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{
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auto pt = new MTLLegacyGregoryPatchTable();
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auto& vertexValenceTable = farPatchTable->GetVertexValenceTable();
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auto& quadOffsetsTable = farPatchTable->GetQuadOffsetsTable();
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if(!vertexValenceTable.empty())
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{
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pt->_vertexValenceBuffer = createBuffer(vertexValenceTable.data(), vertexValenceTable.size() * sizeof(vertexValenceTable[0]), context);
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}
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if(!quadOffsetsTable.empty())
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{
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pt->_quadOffsetsBuffer = createBuffer(quadOffsetsTable.data(), quadOffsetsTable.size() * sizeof(quadOffsetsTable[0]), context);
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}
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pt->_quadOffsetsBase[0] = 0;
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pt->_quadOffsetsBase[1] = 0;
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for(auto i = 0; i < farPatchTable->GetNumPatchArrays(); i++)
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{
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if(farPatchTable->GetPatchArrayDescriptor(i).GetType() == Far::PatchDescriptor::GREGORY)
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{
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pt->_quadOffsetsBase[1] = farPatchTable->GetNumPatches(i) * 4;
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break;
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}
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}
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return pt;
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}
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void MTLLegacyGregoryPatchTable::UpdateVertexBuffer(id<MTLBuffer> vbo, int numVertices, int numVertexElements, MTLContext* context)
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{
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_vertexBuffer = vbo;
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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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