mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-04 00:41:05 +00:00
3ae50d1c50
New text:
Copyright 2013 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.
112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
//
|
|
// Copyright 2013 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.
|
|
//
|
|
|
|
#ifndef OSD_CPU_EVAL_LIMIT_CONTROLLER_H
|
|
#define OSD_CPU_EVAL_LIMIT_CONTROLLER_H
|
|
|
|
#include "../version.h"
|
|
|
|
#include "../osd/evalLimitContext.h"
|
|
#include "../osd/cpuEvalLimitContext.h"
|
|
#include "../osd/vertexDescriptor.h"
|
|
|
|
namespace OpenSubdiv {
|
|
namespace OPENSUBDIV_VERSION {
|
|
|
|
/// \brief CPU controler for limit surface evaluation.
|
|
///
|
|
/// A CPU-driven controller that can be called to evaluate samples on the limit
|
|
/// surface for a given EvalContext.
|
|
///
|
|
class OsdCpuEvalLimitController {
|
|
|
|
public:
|
|
/// Constructor.
|
|
OsdCpuEvalLimitController();
|
|
|
|
/// Destructor.
|
|
~OsdCpuEvalLimitController();
|
|
|
|
/// \brief Represents a location on the limit surface
|
|
struct OsdEvalCoords {
|
|
int face; // Ptex unique face ID
|
|
float u,v; // local u,v
|
|
};
|
|
|
|
/// \brief Vertex interpolation of samples at the limit
|
|
///
|
|
/// Evaluates "vertex" interpolation of a sample on the surface limit.
|
|
///
|
|
/// Warning : this function is re-entrant but it breaks the Osd API pattern
|
|
/// by requiring the client code to bind and unbind the vertex buffers to
|
|
/// the EvalLimitContext.
|
|
///
|
|
/// Ex :
|
|
/// \code
|
|
/// evalCtxt->BindVertexBuffers( ... );
|
|
///
|
|
/// parallel_for( int index=0; i<nsamples; ++index ) {
|
|
/// evalCtrlr->EvalLimitSample( coord, evalCtxt, index );
|
|
/// }
|
|
///
|
|
/// evalCtxt->UnbindVertexBuffers();
|
|
/// \endcode
|
|
///
|
|
/// @param coords location on the limit surface to be evaluated
|
|
///
|
|
/// @param context the EvalLimitContext that the controller will evaluate
|
|
///
|
|
/// @param index the index of the vertex in the output buffers bound to the
|
|
/// context
|
|
///
|
|
/// @return the number of samples found (0 if the location was tagged as a hole
|
|
/// or the coordinate was invalid)
|
|
///
|
|
template<class VERTEX_BUFFER, class OUTPUT_BUFFER>
|
|
int EvalLimitSample( OpenSubdiv::OsdEvalCoords const & coords,
|
|
OsdCpuEvalLimitContext * context,
|
|
unsigned int index ) {
|
|
if (not context)
|
|
return 0;
|
|
|
|
int n = _EvalLimitSample( coords, context, index );
|
|
|
|
return n;
|
|
}
|
|
|
|
private:
|
|
|
|
int _EvalLimitSample( OpenSubdiv::OsdEvalCoords const & coords,
|
|
OsdCpuEvalLimitContext * context,
|
|
unsigned int index );
|
|
|
|
};
|
|
|
|
} // end namespace OPENSUBDIV_VERSION
|
|
using namespace OPENSUBDIV_VERSION;
|
|
|
|
} // end namespace OpenSubdiv
|
|
|
|
#endif /* OSD_CPU_EVAL_LIMIT_CONTROLLER_H */
|