mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-23 08:20:06 +00:00
5a51f31104
- Renamed common/vtr_utils to common/far_utils. - Renamed all mentions of Vtr in the sources of tests and examples.
355 lines
12 KiB
C++
355 lines
12 KiB
C++
//
|
|
// Copyright 2015 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.
|
|
//
|
|
|
|
#include "sceneBase.h"
|
|
#include <limits>
|
|
#include "../../regression/common/far_utils.h"
|
|
#include <far/patchTableFactory.h>
|
|
#include <far/stencilTableFactory.h>
|
|
|
|
using namespace OpenSubdiv;
|
|
|
|
|
|
SceneBase::SceneBase(Options const &options)
|
|
: _options(options),
|
|
_indexBuffer(0), _patchParamTexture(0) {
|
|
}
|
|
|
|
SceneBase::~SceneBase() {
|
|
if (_indexBuffer) glDeleteBuffers(1, &_indexBuffer);
|
|
if (_patchParamTexture) glDeleteTextures(1, &_patchParamTexture);
|
|
|
|
for (int i = 0; i < (int)_patchTables.size(); ++i) {
|
|
delete _patchTables[i];
|
|
}
|
|
}
|
|
|
|
void
|
|
SceneBase::AddTopology(Shape const *shape, int level, bool varying) {
|
|
Far::PatchTable const * patchTable = NULL;
|
|
int numVerts = createStencilTable(shape, level, varying, &patchTable);
|
|
|
|
// centering rest position
|
|
float pmin[3] = { std::numeric_limits<float>::max(),
|
|
std::numeric_limits<float>::max(),
|
|
std::numeric_limits<float>::max() };
|
|
float pmax[3] = { -std::numeric_limits<float>::max(),
|
|
-std::numeric_limits<float>::max(),
|
|
-std::numeric_limits<float>::max() };
|
|
int nverts = shape->GetNumVertices();
|
|
for (int i = 0; i < nverts; ++i) {
|
|
for (int j = 0; j < 3; ++j) {
|
|
float v = shape->verts[i*3+j];
|
|
pmin[j] = std::min(v, pmin[j]);
|
|
pmax[j] = std::max(v, pmax[j]);
|
|
}
|
|
}
|
|
float center[3] = { (pmax[0]+pmin[0])*0.5f,
|
|
(pmax[1]+pmin[1])*0.5f,
|
|
pmin[2] };
|
|
float radius = sqrt((pmax[0]-pmin[0])*(pmax[0]-pmin[0]) +
|
|
(pmax[1]-pmin[1])*(pmax[1]-pmin[1]) +
|
|
(pmax[2]-pmin[2])*(pmax[2]-pmin[2]));
|
|
|
|
std::vector<float> restPosition(shape->verts);
|
|
for (size_t i=0; i < restPosition.size()/3; ++i) {
|
|
for (int j = 0; j < 3; ++j) {
|
|
restPosition[i*3+j] = (shape->verts[i*3+j] - center[j])/radius;
|
|
}
|
|
}
|
|
|
|
// store topology
|
|
Topology topology;
|
|
topology.numVerts = numVerts;
|
|
topology.restPosition = restPosition;
|
|
_topologies.push_back(topology);
|
|
|
|
// store patch.
|
|
// PatchTables is used later to be spliced into the index buffer.
|
|
_patchTables.push_back(patchTable);
|
|
}
|
|
|
|
int
|
|
SceneBase::createStencilTable(Shape const *shape, int level, bool varying,
|
|
OpenSubdiv::Far::PatchTable const **patchTableOut) {
|
|
|
|
Far::TopologyRefiner * refiner = 0;
|
|
{
|
|
Sdc::SchemeType type = GetSdcType(*shape);
|
|
Sdc::Options options = GetSdcOptions(*shape);
|
|
|
|
refiner = Far::TopologyRefinerFactory<Shape>::Create(
|
|
*shape, Far::TopologyRefinerFactory<Shape>::Options(type, options));
|
|
assert(refiner);
|
|
}
|
|
|
|
// Adaptive refinement currently supported only for catmull-clark scheme
|
|
|
|
if (_options.adaptive) {
|
|
Far::TopologyRefiner::AdaptiveOptions options(level);
|
|
refiner->RefineAdaptive(options);
|
|
} else {
|
|
Far::TopologyRefiner::UniformOptions options(level);
|
|
options.fullTopologyInLastLevel = true;
|
|
refiner->RefineUniform(options);
|
|
}
|
|
|
|
Far::StencilTable const * vertexStencils=0, * varyingStencils=0;
|
|
{
|
|
Far::StencilTableFactory::Options options;
|
|
options.generateOffsets = true;
|
|
options.generateIntermediateLevels = _options.adaptive;
|
|
|
|
vertexStencils = Far::StencilTableFactory::Create(*refiner, options);
|
|
|
|
if (varying) {
|
|
varyingStencils = Far::StencilTableFactory::Create(*refiner, options);
|
|
}
|
|
|
|
assert(vertexStencils);
|
|
}
|
|
|
|
Far::PatchTable const * patchTable = NULL;
|
|
{
|
|
Far::PatchTableFactory::Options poptions(level);
|
|
if (_options.endCap == kEndCapBSplineBasis) {
|
|
poptions.SetEndCapType(
|
|
Far::PatchTableFactory::Options::ENDCAP_BSPLINE_BASIS);
|
|
} else {
|
|
poptions.SetEndCapType(
|
|
Far::PatchTableFactory::Options::ENDCAP_GREGORY_BASIS);
|
|
}
|
|
patchTable = Far::PatchTableFactory::Create(*refiner, poptions);
|
|
}
|
|
*patchTableOut = patchTable;
|
|
|
|
// append local points to stencils
|
|
{
|
|
if (Far::StencilTable const *vertexStencilsWithLocalPoints =
|
|
Far::StencilTableFactory::AppendLocalPointStencilTable(
|
|
*refiner,
|
|
vertexStencils,
|
|
patchTable->GetLocalPointStencilTable())) {
|
|
delete vertexStencils;
|
|
vertexStencils = vertexStencilsWithLocalPoints;
|
|
}
|
|
if (varyingStencils) {
|
|
if (Far::StencilTable const *varyingStencilsWithLocalPoints =
|
|
Far::StencilTableFactory::AppendLocalPointStencilTable(
|
|
*refiner,
|
|
varyingStencils,
|
|
patchTable->GetLocalPointVaryingStencilTable())) {
|
|
delete varyingStencils;
|
|
varyingStencils = varyingStencilsWithLocalPoints;
|
|
}
|
|
}
|
|
}
|
|
int numControlVertices = refiner->GetLevel(0).GetNumVertices();
|
|
|
|
_stencilTableSize = createMeshRefiner(vertexStencils, varyingStencils,
|
|
numControlVertices);
|
|
// note: refiner takes ownerships of vertexStencils/ varyingStencils, patchTable
|
|
|
|
delete refiner;
|
|
return numControlVertices + vertexStencils->GetNumStencils();
|
|
}
|
|
|
|
int
|
|
SceneBase::AddObjects(int numObjects) {
|
|
|
|
_objects.clear();
|
|
|
|
int numTopologies = (int)_topologies.size();
|
|
int vertsOffset = 0;
|
|
|
|
for (int i = 0; i < numObjects; ++i) {
|
|
|
|
Object obj;
|
|
obj.topologyIndex = i % numTopologies;
|
|
obj.vertsOffset = vertsOffset;
|
|
_objects.push_back(obj);
|
|
|
|
vertsOffset += _topologies[obj.topologyIndex].numVerts;
|
|
}
|
|
|
|
// invalidate batch
|
|
for (int i = 0; i < (int)_batches.size(); ++i) {
|
|
glDeleteBuffers(1, &_batches[i].dispatchBuffer);
|
|
}
|
|
_batches.clear();
|
|
|
|
return vertsOffset;
|
|
}
|
|
|
|
size_t
|
|
SceneBase::CreateIndexBuffer() {
|
|
if (_indexBuffer == 0) {
|
|
glGenBuffers(1, &_indexBuffer);
|
|
}
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _indexBuffer);
|
|
std::vector<int> buffer;
|
|
std::vector<unsigned int> ppBuffer;
|
|
|
|
int numTopologies = (int)_topologies.size();
|
|
for (int i = 0; i < numTopologies; ++i) {
|
|
Far::PatchTable const *patchTable = _patchTables[i];
|
|
|
|
int nPatchArrays = patchTable->GetNumPatchArrays();
|
|
|
|
_topologies[i].patchArrays.clear();
|
|
|
|
// for each patchArray
|
|
for (int j = 0; j < nPatchArrays; ++j) {
|
|
|
|
SceneBase::PatchArray patchArray;
|
|
patchArray.desc = patchTable->GetPatchArrayDescriptor(j);
|
|
patchArray.numPatches = patchTable->GetNumPatches(j);
|
|
patchArray.indexOffset = (int)buffer.size();
|
|
patchArray.primitiveIDOffset = (int)ppBuffer.size()/3;
|
|
|
|
_topologies[i].patchArrays.push_back(patchArray);
|
|
|
|
// indices
|
|
Far::ConstIndexArray indices = patchTable->GetPatchArrayVertices(j);
|
|
for (int k = 0; k < indices.size(); ++k) {
|
|
buffer.push_back(indices[k]);
|
|
}
|
|
|
|
// patchParams
|
|
Far::ConstPatchParamArray patchParams = patchTable->GetPatchParams(j);
|
|
// XXX: needs sharpness interface for patcharray or put sharpness into patchParam.
|
|
for (int k = 0; k < patchParams.size(); ++k) {
|
|
float sharpness = 0.0;
|
|
ppBuffer.push_back(patchParams[k].faceIndex);
|
|
ppBuffer.push_back(patchParams[k].bitField.field);
|
|
ppBuffer.push_back(*((unsigned int *)&sharpness));
|
|
}
|
|
}
|
|
#if 0
|
|
// XXX: we'll remove below APIs from Far::PatchTable.
|
|
// use GetPatchParams(patchArray) instead as above.
|
|
|
|
// patch param (all in one)
|
|
Far::PatchParamTable const &patchParamTable =
|
|
patchTable->GetPatchParamTable();
|
|
std::vector<int> const &sharpnessIndexTable =
|
|
patchTable->GetSharpnessIndexTable();
|
|
std::vector<float> const &sharpnessValues =
|
|
patchTable->GetSharpnessValues();
|
|
|
|
int npatches = (int)patchParamTable.size();
|
|
for (int i = 0; i < npatches; ++i) {
|
|
float sharpness = 0.0;
|
|
if (i < (int)sharpnessIndexTable.size()) {
|
|
sharpness = sharpnessIndexTable[i] >= 0 ?
|
|
sharpnessValues[sharpnessIndexTable[i]] : 0.0f;
|
|
}
|
|
ppBuffer.push_back(patchParamTable[i].faceIndex);
|
|
ppBuffer.push_back(patchParamTable[i].bitField.field);
|
|
ppBuffer.push_back(*((unsigned int *)&sharpness));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER,
|
|
(int)buffer.size()*sizeof(int), &buffer[0], GL_STATIC_DRAW);
|
|
|
|
// patchParam is currently expected to be texture (it can be SSBO)
|
|
GLuint texBuffer = 0;
|
|
glGenBuffers(1, &texBuffer);
|
|
glBindBuffer(GL_ARRAY_BUFFER, texBuffer);
|
|
glBufferData(GL_ARRAY_BUFFER, ppBuffer.size()*sizeof(unsigned int),
|
|
&ppBuffer[0], GL_STATIC_DRAW);
|
|
|
|
if (_patchParamTexture == 0) {
|
|
glGenTextures(1, &_patchParamTexture);
|
|
}
|
|
glBindTexture(GL_TEXTURE_BUFFER, _patchParamTexture);
|
|
glTexBuffer(GL_TEXTURE_BUFFER, GL_RGB32I, texBuffer);
|
|
glBindTexture(GL_TEXTURE_BUFFER, 0);
|
|
|
|
glDeleteBuffers(1, &texBuffer);
|
|
|
|
return buffer.size()*sizeof(int) + ppBuffer.size()*sizeof(int);
|
|
}
|
|
|
|
void
|
|
SceneBase::buildBatches() {
|
|
|
|
int numObjects = (int)_objects.size();
|
|
for (int i = 0; i < (int)_batches.size(); ++i) {
|
|
glDeleteBuffers(1, &_batches[i].dispatchBuffer);
|
|
}
|
|
_batches.clear();
|
|
|
|
typedef std::map<Far::PatchDescriptor, std::vector<int> > StagingBatches;
|
|
StagingBatches stagingBatches;
|
|
|
|
for (int i = 0; i < numObjects; ++i) {
|
|
// get patchArrays from topology
|
|
SceneBase::PatchArrayVector const &patchArrays =
|
|
_topologies[_objects[i].topologyIndex].patchArrays;
|
|
|
|
// for each patchArray:
|
|
for (int j = 0; j < (int)patchArrays.size(); ++j) {
|
|
SceneBase::PatchArray const &patchArray = patchArrays[j];
|
|
|
|
// find batch for the descriptor
|
|
std::vector<int> &command = stagingBatches[patchArray.desc];
|
|
|
|
int nPatch = patchArray.numPatches;
|
|
int baseVertex = GetVertsOffset(i);
|
|
|
|
command.push_back(nPatch * patchArray.desc.GetNumControlVertices());
|
|
command.push_back(1);
|
|
command.push_back(patchArray.indexOffset);
|
|
command.push_back(baseVertex);
|
|
command.push_back(0);
|
|
|
|
command.push_back(patchArray.primitiveIDOffset);
|
|
}
|
|
}
|
|
int stride = sizeof(int)*6; // not 5, since we interleave primitiveIDOffset
|
|
|
|
for (StagingBatches::iterator it = stagingBatches.begin();
|
|
it != stagingBatches.end(); ++it) {
|
|
|
|
Batch batch;
|
|
glGenBuffers(1, &batch.dispatchBuffer);
|
|
|
|
glBindBuffer(GL_DRAW_INDIRECT_BUFFER, batch.dispatchBuffer);
|
|
glBufferData(GL_DRAW_INDIRECT_BUFFER,
|
|
it->second.size()*sizeof(int),
|
|
&it->second[0], GL_STATIC_DRAW);
|
|
|
|
batch.desc = it->first;
|
|
batch.count = (int)it->second.size()/6;
|
|
batch.stride = stride;
|
|
|
|
_batches.push_back(batch);
|
|
}
|
|
glBindBuffer(GL_DRAW_INDIRECT_BUFFER, 0);
|
|
}
|