mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-28 22:31:07 +00:00
f145f70fd2
- re-implement the pool allocator
- use templates to remove code redundancy between regular & limit stencils
- leverage [] operator overloading to simplify stencil factorization
- add the ability to treat subdivision levels independently (see below)
- refactor Far::TopologyRefiner::Interpolate<>() methods to pass buffers by reference
(allows overloading of [] operator)
- rename some of the stencil factory options
- propagate changes to Osd / examples / tutorials...
308 lines
9.6 KiB
C++
308 lines
9.6 KiB
C++
//
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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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#ifndef OSD_MESH_H
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#define OSD_MESH_H
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#include "../version.h"
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#include "../far/kernelBatch.h"
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#include "../far/topologyRefiner.h"
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#include "../far/patchTablesFactory.h"
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#include "../far/stencilTables.h"
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#include "../far/stencilTablesFactory.h"
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#include "../osd/error.h"
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#include "../osd/vertex.h"
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#include "../osd/vertexDescriptor.h"
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#include <bitset>
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#include <cassert>
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#include <cstring>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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enum MeshBits {
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MeshAdaptive = 0,
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MeshInterleaveVarying = 1,
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MeshPtexData = 2,
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MeshFVarData = 3,
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MeshUseSingleCreasePatch = 4,
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NUM_MESH_BITS = 5,
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};
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typedef std::bitset<NUM_MESH_BITS> MeshBitset;
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template <class DRAW_CONTEXT>
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class MeshInterface {
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public:
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typedef DRAW_CONTEXT DrawContext;
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typedef typename DrawContext::VertexBufferBinding VertexBufferBinding;
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public:
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MeshInterface() { }
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virtual ~MeshInterface() { }
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virtual int GetNumVertices() const = 0;
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virtual void UpdateVertexBuffer(float const *vertexData, int startVertex, int numVerts) = 0;
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virtual void UpdateVaryingBuffer(float const *varyingData, int startVertex, int numVerts) = 0;
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virtual void Refine() = 0;
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virtual void Refine(VertexBufferDescriptor const *vertexDesc,
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VertexBufferDescriptor const *varyingDesc,
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bool interleaved) = 0;
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virtual void Synchronize() = 0;
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virtual DrawContext * GetDrawContext() = 0;
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virtual VertexBufferBinding BindVertexBuffer() = 0;
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virtual VertexBufferBinding BindVaryingBuffer() = 0;
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virtual void SetFVarDataChannel(int fvarWidth, std::vector<float> const & fvarData) = 0;
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protected:
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static inline int getNumVertices(Far::TopologyRefiner const & refiner) {
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return refiner.IsUniform() ?
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refiner.GetNumVertices(0) + refiner.GetNumVertices(refiner.GetMaxLevel()) :
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refiner.GetNumVerticesTotal();
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}
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static inline void refineMesh(Far::TopologyRefiner & refiner, int level, bool adaptive, bool singleCreasePatch) {
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bool fullTopologyInLastLevel = refiner.GetNumFVarChannels()>0;
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if (adaptive) {
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refiner.RefineAdaptive(level, fullTopologyInLastLevel, singleCreasePatch);
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} else {
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refiner.RefineUniform(level, fullTopologyInLastLevel);
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}
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}
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};
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template <class VERTEX_BUFFER, class COMPUTE_CONTROLLER, class DRAW_CONTEXT>
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class Mesh : public MeshInterface<DRAW_CONTEXT> {
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public:
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typedef VERTEX_BUFFER VertexBuffer;
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typedef COMPUTE_CONTROLLER ComputeController;
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typedef typename ComputeController::ComputeContext ComputeContext;
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typedef DRAW_CONTEXT DrawContext;
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typedef typename DrawContext::VertexBufferBinding VertexBufferBinding;
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Mesh(ComputeController * computeController,
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Far::TopologyRefiner * refiner,
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int numVertexElements,
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int numVaryingElements,
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int level,
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MeshBitset bits = MeshBitset()) :
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_refiner(refiner),
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_patchTables(0),
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_vertexBuffer(0),
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_varyingBuffer(0),
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_computeContext(0),
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_computeController(computeController),
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_drawContext(0) {
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assert(_refiner);
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MeshInterface<DRAW_CONTEXT>::refineMesh(*_refiner, level, bits.test(MeshAdaptive), bits.test(MeshUseSingleCreasePatch));
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initializeVertexBuffers(numVertexElements, numVaryingElements, bits);
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initializeComputeContext(numVertexElements, numVaryingElements);
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initializeDrawContext(numVertexElements, level, bits);
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}
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Mesh(ComputeController * computeController,
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Far::TopologyRefiner * refiner,
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Far::PatchTables * patchTables,
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Far::KernelBatchVector const & kernelBatches,
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VertexBuffer * vertexBuffer,
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VertexBuffer * varyingBuffer,
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ComputeContext * computeContext,
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DrawContext * drawContext) :
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_refiner(refiner),
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_patchTables(patchTables),
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_kernelBatches(kernelBatches),
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_vertexBuffer(vertexBuffer),
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_varyingBuffer(varyingBuffer),
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_computeContext(computeContext),
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_computeController(computeController),
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_drawContext(drawContext) { }
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virtual ~Mesh() {
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delete _refiner;
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delete _patchTables;
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delete _vertexBuffer;
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delete _varyingBuffer;
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delete _computeContext;
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delete _drawContext;
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}
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virtual int GetNumVertices() const {
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assert(_refiner);
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return MeshInterface<DRAW_CONTEXT>::getNumVertices(*_refiner);
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}
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virtual void UpdateVertexBuffer(float const *vertexData, int startVertex, int numVerts) {
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_vertexBuffer->UpdateData(vertexData, startVertex, numVerts);
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}
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virtual void UpdateVaryingBuffer(float const *varyingData, int startVertex, int numVerts) {
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_varyingBuffer->UpdateData(varyingData, startVertex, numVerts);
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}
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virtual void Refine() {
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_computeController->Compute(_computeContext, _kernelBatches, _vertexBuffer, _varyingBuffer);
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}
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virtual void Refine(VertexBufferDescriptor const *vertexDesc, VertexBufferDescriptor const *varyingDesc) {
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_computeController->Refine(_computeContext, _kernelBatches, _vertexBuffer, _varyingBuffer, vertexDesc, varyingDesc);
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}
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virtual void Synchronize() {
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_computeController->Synchronize();
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}
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virtual VertexBufferBinding BindVertexBuffer() {
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return VertexBufferBinding(0);
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}
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virtual VertexBufferBinding BindVaryingBuffer() {
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return VertexBufferBinding(0);
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}
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virtual DrawContext * GetDrawContext() {
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return _drawContext;
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}
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virtual void SetFVarDataChannel(int fvarWidth, std::vector<float> const & fvarData) {
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if (_patchTables and _drawContext and fvarWidth and (not fvarData.empty())) {
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_drawContext->SetFVarDataTexture(*_patchTables, fvarWidth, fvarData);
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}
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}
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private:
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void initializeComputeContext(int numVertexElements,
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int numVaryingElements ) {
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assert(_refiner);
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Far::StencilTablesFactory::Options options;
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options.generateOffsets=true;
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options.generateIntermediateLevels=_refiner->IsUniform() ? false : true;
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Far::StencilTables const * vertexStencils=0, * varyingStencils=0;
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if (numVertexElements>0) {
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vertexStencils = Far::StencilTablesFactory::Create(*_refiner, options);
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_kernelBatches.push_back(Far::StencilTablesFactory::Create(*vertexStencils));
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}
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if (numVaryingElements>0) {
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options.interpolationMode = Far::StencilTablesFactory::INTERPOLATE_VARYING;
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varyingStencils = Far::StencilTablesFactory::Create(*_refiner, options);
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}
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_computeContext = ComputeContext::Create(vertexStencils, varyingStencils);
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delete vertexStencils;
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delete varyingStencils;
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}
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void initializeDrawContext(int numElements, int level, MeshBitset bits) {
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assert(_refiner and _vertexBuffer);
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Far::PatchTablesFactory::Options options(level);
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options.generateFVarTables = bits.test(MeshFVarData);
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options.useSingleCreasePatch = bits.test(MeshUseSingleCreasePatch);
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_patchTables = Far::PatchTablesFactory::Create(*_refiner);
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_drawContext = DrawContext::Create(
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_patchTables, numElements, bits.test(MeshFVarData));
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_drawContext->UpdateVertexTexture(_vertexBuffer);
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}
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int initializeVertexBuffers(int numVertexElements,
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int numVaryingElements, MeshBitset bits) {
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int numVertices = MeshInterface<DRAW_CONTEXT>::getNumVertices(*_refiner);
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int numElements = numVertexElements +
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(bits.test(MeshInterleaveVarying) ? numVaryingElements : 0);
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if (numVertexElements) {
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_vertexBuffer = VertexBuffer::Create(numElements, numVertices);
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}
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if (numVaryingElements>0 and (not bits.test(MeshInterleaveVarying))) {
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_varyingBuffer = VertexBuffer::Create(numVaryingElements, numVertices);
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}
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return numElements;
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}
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Far::TopologyRefiner * _refiner;
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Far::PatchTables * _patchTables;
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Far::KernelBatchVector _kernelBatches;
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VertexBuffer * _vertexBuffer,
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* _varyingBuffer;
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ComputeContext * _computeContext;
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ComputeController * _computeController;
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DrawContext *_drawContext;
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};
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} // end namespace 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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#endif // OSD_MESH_H
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