mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-13 04:20:10 +00:00
f3aec9eb31
OsdVertex was used in 2.x FarMesh as a placeholder for Hbr template parameter. We don't need such a class any more.
387 lines
13 KiB
C++
387 lines
13 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 <bitset>
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#include <cassert>
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#include <cstring>
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#include <vector>
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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/vertexDescriptor.h"
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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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MeshEndCapBSplineBasis = 5, // exclusive
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MeshEndCapGregoryBasis = 6, // exclusive
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MeshEndCapLegacyGregory = 7, // exclusive
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NUM_MESH_BITS = 8,
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};
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typedef std::bitset<NUM_MESH_BITS> MeshBitset;
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// ---------------------------------------------------------------------------
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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,
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int startVertex, int numVerts) = 0;
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virtual void UpdateVaryingBuffer(float const *varyingData,
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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) = 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,
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std::vector<float> const & fvarData) = 0;
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protected:
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static inline void refineMesh(Far::TopologyRefiner & refiner,
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int level, bool adaptive,
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bool singleCreasePatch) {
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if (adaptive) {
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Far::TopologyRefiner::AdaptiveOptions options(level);
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options.useSingleCreasePatch = singleCreasePatch;
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refiner.RefineAdaptive(options);
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} else {
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// This dependency on FVar channels should not be necessary
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bool fullTopologyInLastLevel = refiner.GetNumFVarChannels()>0;
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Far::TopologyRefiner::UniformOptions options(level);
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options.fullTopologyInLastLevel = fullTopologyInLastLevel;
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refiner.RefineUniform(options);
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}
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}
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};
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// ---------------------------------------------------------------------------
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template <class VERTEX_BUFFER,
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class COMPUTE_CONTROLLER,
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class DRAW_CONTEXT,
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class DEVICE_CONTEXT = void>
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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 DRAW_CONTEXT DrawContext;
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typedef DEVICE_CONTEXT DeviceContext;
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typedef typename ComputeController::ComputeContext ComputeContext;
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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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DeviceContext * deviceContext = NULL) :
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_refiner(refiner),
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_patchTables(NULL),
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_numVertices(0),
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_vertexBuffer(NULL),
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_varyingBuffer(NULL),
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_computeContext(NULL),
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_computeController(computeController),
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_drawContext(NULL),
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_deviceContext(deviceContext) {
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assert(_refiner);
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MeshInterface<DRAW_CONTEXT>::refineMesh(
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*_refiner, level,
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bits.test(MeshAdaptive),
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bits.test(MeshUseSingleCreasePatch));
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int numVertexElementsInterleaved = numVertexElements +
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(bits.test(MeshInterleaveVarying) ? numVaryingElements : 0);
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int numVaryingElementsNonInterleaved =
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(bits.test(MeshInterleaveVarying) ? 0 : numVaryingElements);
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initializeContext(numVertexElements,
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numVaryingElements,
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numVertexElementsInterleaved, level, bits);
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initializeVertexBuffers(_numVertices,
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numVertexElementsInterleaved,
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numVaryingElementsNonInterleaved);
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// will retire
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_drawContext->UpdateVertexTexture(_vertexBuffer, _deviceContext);
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}
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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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// devicecontext and computecontroller are not owned by this class.
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}
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virtual void UpdateVertexBuffer(float const *vertexData,
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int startVertex, int numVerts) {
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_vertexBuffer->UpdateData(vertexData, startVertex, numVerts,
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_deviceContext);
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}
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virtual void UpdateVaryingBuffer(float const *varyingData,
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int startVertex, int numVerts) {
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_varyingBuffer->UpdateData(varyingData, startVertex, numVerts,
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_deviceContext);
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}
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virtual void Refine() {
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_computeController->Compute(_computeContext,
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_vertexBuffer, _varyingBuffer);
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}
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virtual void Refine(VertexBufferDescriptor const *vertexDesc,
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VertexBufferDescriptor const *varyingDesc) {
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_computeController->Compute(_computeContext,
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_vertexBuffer, _varyingBuffer,
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vertexDesc, varyingDesc);
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}
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virtual void Refine(VertexBufferDescriptor const *vertexDesc,
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VertexBufferDescriptor const *varyingDesc,
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bool interleaved) {
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_computeController->Compute(_computeContext,
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_vertexBuffer,
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(interleaved ?
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_vertexBuffer : _varyingBuffer),
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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 DrawContext * GetDrawContext() {
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return _drawContext;
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}
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virtual void SetFVarDataChannel(int fvarWidth,
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std::vector<float> const & fvarData) {
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if (_patchTables and
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_drawContext and
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fvarWidth and
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(not fvarData.empty())) {
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_drawContext->SetFVarDataTexture(*_patchTables, fvarWidth, fvarData,
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_deviceContext);
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}
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}
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virtual int GetNumVertices() const { return _numVertices; }
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virtual VertexBufferBinding BindVertexBuffer() {
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return _vertexBuffer->BindVBO(_deviceContext);
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}
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virtual VertexBufferBinding BindVaryingBuffer() {
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return _varyingBuffer->BindVBO(_deviceContext);
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}
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virtual VertexBuffer * GetVertexBuffer() {
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return _vertexBuffer;
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}
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virtual VertexBuffer * GetVaryingBuffer() {
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return _varyingBuffer;
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}
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virtual Far::TopologyRefiner const * GetTopologyRefiner() const {
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return _refiner;
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}
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private:
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void initializeContext(int numVertexElements,
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int numVaryingElements,
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int numElements, int level, MeshBitset bits) {
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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 =
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_refiner->IsUniform() ? false : true;
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Far::StencilTables const * vertexStencils = NULL;
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Far::StencilTables const * varyingStencils = NULL;
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if (numVertexElements>0) {
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vertexStencils = Far::StencilTablesFactory::Create(*_refiner,
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options);
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}
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if (numVaryingElements>0) {
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options.interpolationMode =
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Far::StencilTablesFactory::INTERPOLATE_VARYING;
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varyingStencils = Far::StencilTablesFactory::Create(*_refiner,
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options);
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}
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Far::PatchTablesFactory::Options poptions(level);
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poptions.generateFVarTables = bits.test(MeshFVarData);
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poptions.useSingleCreasePatch = bits.test(MeshUseSingleCreasePatch);
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if (bits.test(MeshEndCapBSplineBasis)) {
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poptions.SetEndCapType(
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Far::PatchTablesFactory::Options::ENDCAP_BSPLINE_BASIS);
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} else if (bits.test(MeshEndCapGregoryBasis)) {
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poptions.SetEndCapType(
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Far::PatchTablesFactory::Options::ENDCAP_GREGORY_BASIS);
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// points on gregory basis endcap boundary can be shared among
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// adjacent patches to save some stencils.
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poptions.shareEndCapPatchPoints = true;
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} else if (bits.test(MeshEndCapLegacyGregory)) {
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poptions.SetEndCapType(
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Far::PatchTablesFactory::Options::ENDCAP_LEGACY_GREGORY);
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}
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_patchTables = Far::PatchTablesFactory::Create(*_refiner, poptions);
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// if there's endcap stencils, merge it into regular stencils.
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if (_patchTables->GetEndCapVertexStencilTables()) {
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// append stencils
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if (Far::StencilTables const *vertexStencilsWithEndCap =
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Far::StencilTablesFactory::AppendEndCapStencilTables(
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*_refiner,
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vertexStencils,
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_patchTables->GetEndCapVertexStencilTables())) {
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delete vertexStencils;
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vertexStencils = vertexStencilsWithEndCap;
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}
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if (varyingStencils) {
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if (Far::StencilTables const *varyingStencilsWithEndCap =
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Far::StencilTablesFactory::AppendEndCapStencilTables(
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*_refiner,
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varyingStencils,
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_patchTables->GetEndCapVaryingStencilTables())) {
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delete varyingStencils;
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varyingStencils = varyingStencilsWithEndCap;
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}
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}
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}
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_drawContext = DrawContext::Create(_patchTables, numElements,
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_deviceContext);
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_computeContext = ComputeContext::Create(vertexStencils,
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varyingStencils,
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_deviceContext);
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// numvertices = coarse verts + refined verts + gregory basis verts
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_numVertices = vertexStencils->GetNumControlVertices()
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+ vertexStencils->GetNumStencils();
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delete vertexStencils;
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delete varyingStencils;
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}
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void initializeVertexBuffers(int numVertices,
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int numVertexElements,
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int numVaryingElements) {
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if (numVertexElements) {
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_vertexBuffer = VertexBuffer::Create(numVertexElements,
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numVertices, _deviceContext);
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}
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if (numVaryingElements) {
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_varyingBuffer = VertexBuffer::Create(numVaryingElements,
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numVertices, _deviceContext);
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}
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}
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Far::TopologyRefiner * _refiner;
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Far::PatchTables * _patchTables;
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int _numVertices;
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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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DeviceContext *_deviceContext;
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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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