mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-25 13:00:07 +00:00
ec89f76038
- fix some variable names (private vs. public)
- implement constructors to guarantee initialized pointers (d'oh)
- add a 'Reset' method to unbind buffers
Note: while the new contexts have been cleaned up, we now have a fair amount of duplicated code in the controllers...
147 lines
4.5 KiB
C++
147 lines
4.5 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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#include "../osd/cpuEvalStencilsController.h"
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#include <cassert>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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OsdCpuEvalStencilsController::OsdCpuEvalStencilsController() {
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}
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OsdCpuEvalStencilsController::~OsdCpuEvalStencilsController() {
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}
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int
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OsdCpuEvalStencilsController::_UpdateValues( OsdCpuEvalStencilsContext * context ) {
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int result=0;
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FarStencilTables const * stencils = context->GetStencilTables();
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int nstencils = stencils->GetNumStencils();
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if (not nstencils)
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return result;
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OsdVertexBufferDescriptor ctrlDesc = _currentBindState.controlDataDesc,
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outDesc = _currentBindState.outputDataDesc;
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// make sure that we have control data to work with
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if (not ctrlDesc.CanEval(outDesc))
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return 0;
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float const * ctrl = _currentBindState.controlData + ctrlDesc.offset;
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float * out = _currentBindState.outputData + outDesc.offset;
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if ((not ctrl) or (not out))
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return result;
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int const * sizes = &stencils->GetSizes().at(0),
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* index = &stencils->GetControlIndices().at(0);
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float const * weight = &stencils->GetWeights().at(0);
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for (int i=0; i<nstencils; ++i) {
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memset(out, 0, outDesc.length*sizeof(float));
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for (int j=0; j<sizes[i]; ++j, ++index, ++weight) {
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float const * cv = ctrl + (*index)*ctrlDesc.stride;
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for (int k=0; k<outDesc.length; ++k) {
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out[k] += cv[k] * (*weight);
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}
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}
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out += outDesc.stride;
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}
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return nstencils;
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}
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int
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OsdCpuEvalStencilsController::_UpdateDerivs( OsdCpuEvalStencilsContext * context ) {
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int result=0;
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FarStencilTables const * stencils = context->GetStencilTables();
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int nstencils = stencils->GetNumStencils();
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if (not nstencils)
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return result;
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OsdVertexBufferDescriptor ctrlDesc = _currentBindState.controlDataDesc,
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duDesc = _currentBindState.outputDuDesc,
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dvDesc = _currentBindState.outputDvDesc;
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// make sure that we have control data to work with
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if (not (ctrlDesc.CanEval(duDesc) and ctrlDesc.CanEval(dvDesc)))
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return 0;
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float const * ctrl = _currentBindState.controlData + ctrlDesc.offset;
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float * du = _currentBindState.outputUDeriv + duDesc.offset,
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* dv = _currentBindState.outputVDeriv + dvDesc.offset;
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if ((not ctrl) or (not du) or (not dv))
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return result;
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int const * sizes = &stencils->GetSizes().at(0),
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* index = &stencils->GetControlIndices().at(0);
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float const * duweight = &stencils->GetDuWeights().at(0),
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* dvweight = &stencils->GetDvWeights().at(0);
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for (int i=0; i<nstencils; ++i) {
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memset(du, 0, duDesc.length*sizeof(float));
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memset(dv, 0, dvDesc.length*sizeof(float));
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for (int j=0; j<sizes[i]; ++j, ++index, ++duweight, ++dvweight) {
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float const * cv = ctrl + (*index)*ctrlDesc.stride;
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for (int k=0; k<duDesc.length; ++k) {
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du[k] += cv[k] * (*duweight);
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dv[k] += cv[k] * (*dvweight);
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}
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}
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du += duDesc.stride;
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dv += dvDesc.stride;
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}
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return nstencils;
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}
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void
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OsdCpuEvalStencilsController::Synchronize() {
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}
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} // end namespace OPENSUBDIV_VERSION
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} // end namespace OpenSubdiv
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