OpenSubdiv/opensubdiv/osd/hlslPatchShaderSource.cpp
David G Yu ff34c514f5 Improved patch basis eval for Osd to match Far
This updates the patch basis evaluation functions in Osd
to match recent changes to far/patchBasis.

This also exposes a common facility for dealing with PatchCoord,
PatchArray, and PatchParam. These are exposed as global functions
operating on struct data, since C++ style class methods are not
supported by all of the Osd shader and kernel execution envirionments.

Changes:
    - Merged far/patchBasis.cpp to osd/patchBasisCommon{,Types,Eval}.h
    - Exposed PatchCoord, PatchArray, and PatchParam to Osd kernels
    - exposed OsdEvaluatePatchBasis and OsdEvaluatePatchBasisNormalized
    - Updated CPU, TBB, Omp, CUDA, OpenCL, GLSL, HLSL, and Metal evaluators
    - Updated glFVarViewer
2018-11-15 17:11:50 -08:00

138 lines
4.3 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 "../osd/hlslPatchShaderSource.h"
#include "../far/error.h"
#include <sstream>
#include <string>
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
namespace Osd {
static const char *commonShaderSource =
#include "hlslPatchCommon.gen.h"
;
static const char *patchBasisTypesShaderSource =
#include "patchBasisCommonTypes.gen.h"
;
static const char *patchBasisShaderSource =
#include "patchBasisCommon.gen.h"
;
static const char *patchBasisEvalShaderSource =
#include "patchBasisCommonEval.gen.h"
;
static const char *bsplineShaderSource =
#include "hlslPatchBSpline.gen.h"
;
static const char *gregoryShaderSource =
#include "hlslPatchGregory.gen.h"
;
static const char *gregoryBasisShaderSource =
#include "hlslPatchGregoryBasis.gen.h"
;
/*static*/
std::string
HLSLPatchShaderSource::GetCommonShaderSource() {
return std::string(commonShaderSource);
}
/*static*/
std::string
HLSLPatchShaderSource::GetPatchBasisShaderSource() {
std::stringstream ss;
#if defined(OPENSUBDIV_GREGORY_EVAL_TRUE_DERIVATIVES)
ss << "#define OPENSUBDIV_GREGORY_EVAL_TRUE_DERIVATIVES\n";
#endif
ss << std::string(patchBasisTypesShaderSource);
ss << std::string(patchBasisShaderSource);
ss << std::string(patchBasisEvalShaderSource);
return ss.str();
}
/*static*/
std::string
HLSLPatchShaderSource::GetVertexShaderSource(Far::PatchDescriptor::Type type) {
switch (type) {
case Far::PatchDescriptor::REGULAR:
return bsplineShaderSource;
case Far::PatchDescriptor::GREGORY:
return gregoryShaderSource;
case Far::PatchDescriptor::GREGORY_BOUNDARY:
return std::string("#define OSD_PATCH_GREGORY_BOUNDRY\n")
+ std::string(gregoryShaderSource);
case Far::PatchDescriptor::GREGORY_BASIS:
return gregoryBasisShaderSource;
default:
break; // returns empty (points, lines, quads, ...)
}
return std::string();
}
/*static*/
std::string
HLSLPatchShaderSource::GetHullShaderSource(Far::PatchDescriptor::Type type) {
switch (type) {
case Far::PatchDescriptor::REGULAR:
return bsplineShaderSource;
case Far::PatchDescriptor::GREGORY:
return gregoryShaderSource;
case Far::PatchDescriptor::GREGORY_BOUNDARY:
return std::string("#define OSD_PATCH_GREGORY_BOUNDRY\n")
+ std::string(gregoryShaderSource);
case Far::PatchDescriptor::GREGORY_BASIS:
return gregoryBasisShaderSource;
default:
break; // returns empty (points, lines, quads, ...)
}
return std::string();
}
/*static*/
std::string
HLSLPatchShaderSource::GetDomainShaderSource(Far::PatchDescriptor::Type type) {
switch (type) {
case Far::PatchDescriptor::REGULAR:
return bsplineShaderSource;
case Far::PatchDescriptor::GREGORY:
return gregoryShaderSource;
case Far::PatchDescriptor::GREGORY_BOUNDARY:
return std::string("#define OSD_PATCH_GREGORY_BOUNDRY\n")
+ std::string(gregoryShaderSource);
case Far::PatchDescriptor::GREGORY_BASIS:
return gregoryBasisShaderSource;
default:
break; // returns empty (points, lines, quads, ...)
}
return std::string();
}
} // end namespace Osd
} // end namespace OPENSUBDIV_VERSION
} // end namespace OpenSubdiv