mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-23 20:20:09 +00:00
838fce27ab
The symbol OPENSUBDIV_GREGORY_EVAL_TRUE_DERIVATIVES determines the method used to compute derivative weights for Gregory basis patches. Setting this symbol during CMake configuration (and hence during C++ and shader compilation) will enable the use of true derivative weights. The default behavior is to use a simpler approximation for consistency with earlier releases.
166 lines
5.3 KiB
C++
166 lines
5.3 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/glslPatchShaderSource.h"
|
|
#include <sstream>
|
|
#include <string>
|
|
|
|
namespace OpenSubdiv {
|
|
namespace OPENSUBDIV_VERSION {
|
|
|
|
namespace Osd {
|
|
|
|
static const char *commonShaderSource =
|
|
#include "glslPatchCommon.gen.h"
|
|
;
|
|
static const char *patchBasisShaderSource =
|
|
#include "patchBasisCommon.gen.h"
|
|
;
|
|
static const char *bsplineShaderSource =
|
|
#include "glslPatchBSpline.gen.h"
|
|
;
|
|
static const char *gregoryShaderSource =
|
|
#include "glslPatchGregory.gen.h"
|
|
;
|
|
static const char *gregoryBasisShaderSource =
|
|
#include "glslPatchGregoryBasis.gen.h"
|
|
;
|
|
|
|
/*static*/
|
|
std::string
|
|
GLSLPatchShaderSource::GetCommonShaderSource() {
|
|
return std::string(commonShaderSource);
|
|
}
|
|
|
|
/*static*/
|
|
std::string
|
|
GLSLPatchShaderSource::GetPatchBasisShaderSource() {
|
|
std::stringstream ss;
|
|
#if defined(OPENSUBDIV_GREGORY_EVAL_TRUE_DERIVATIVES)
|
|
ss << "#define OPENSUBDIV_GREGORY_EVAL_TRUE_DERIVATIVES\n";
|
|
#endif
|
|
ss << std::string(patchBasisShaderSource);
|
|
return ss.str();
|
|
}
|
|
|
|
/*static*/
|
|
std::string
|
|
GLSLPatchShaderSource::GetVertexShaderSource(Far::PatchDescriptor::Type type) {
|
|
std::stringstream ss;
|
|
switch (type) {
|
|
case Far::PatchDescriptor::REGULAR:
|
|
ss << "#define OSD_PATCH_BSPLINE\n"
|
|
<< "#define OSD_PATCH_VERTEX_BSPLINE_SHADER\n"
|
|
<< bsplineShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY:
|
|
ss << "#define OSD_PATCH_GREGORY\n"
|
|
<< "#define OSD_PATCH_VERTEX_GREGORY_SHADER\n"
|
|
<< gregoryShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY_BOUNDARY:
|
|
ss << "#define OSD_PATCH_GREGORY_BOUNDARY\n"
|
|
<< "#define OSD_PATCH_VERTEX_GREGORY_SHADER\n"
|
|
<< gregoryShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY_BASIS:
|
|
ss << "#define OSD_PATCH_GREGORY_BASIS\n"
|
|
<< "#define OSD_PATCH_VERTEX_GREGORY_BASIS_SHADER\n"
|
|
<< gregoryBasisShaderSource;
|
|
break;
|
|
default:
|
|
break; // returns empty (points, lines, quads, ...)
|
|
}
|
|
return ss.str();
|
|
}
|
|
|
|
/*static*/
|
|
std::string
|
|
GLSLPatchShaderSource::GetTessControlShaderSource(
|
|
Far::PatchDescriptor::Type type) {
|
|
std::stringstream ss;
|
|
switch (type) {
|
|
case Far::PatchDescriptor::REGULAR:
|
|
ss << "#define OSD_PATCH_BSPLINE\n"
|
|
<< "#define OSD_PATCH_TESS_CONTROL_BSPLINE_SHADER\n"
|
|
<< bsplineShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY:
|
|
ss << "#define OSD_PATCH_GREGORY\n"
|
|
<< "#define OSD_PATCH_TESS_CONTROL_GREGORY_SHADER\n"
|
|
<< gregoryShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY_BOUNDARY:
|
|
ss << "#define OSD_PATCH_GREGORY_BOUNDARY\n"
|
|
<< "#define OSD_PATCH_TESS_CONTROL_GREGORY_SHADER\n"
|
|
<< gregoryShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY_BASIS:
|
|
ss << "#define OSD_PATCH_GREGORY_BASIS\n"
|
|
<< "#define OSD_PATCH_TESS_CONTROL_GREGORY_BASIS_SHADER\n"
|
|
<< gregoryBasisShaderSource;
|
|
break;
|
|
default:
|
|
break; // returns empty (points, lines, quads, ...)
|
|
}
|
|
return ss.str();
|
|
}
|
|
|
|
/*static*/
|
|
std::string
|
|
GLSLPatchShaderSource::GetTessEvalShaderSource(
|
|
Far::PatchDescriptor::Type type) {
|
|
std::stringstream ss;
|
|
switch (type) {
|
|
case Far::PatchDescriptor::REGULAR:
|
|
ss << "#define OSD_PATCH_BSPLINE\n"
|
|
<< "#define OSD_PATCH_TESS_EVAL_BSPLINE_SHADER\n"
|
|
<< bsplineShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY:
|
|
ss << "#define OSD_PATCH_GREGORY\n"
|
|
<< "#define OSD_PATCH_TESS_EVAL_GREGORY_SHADER\n"
|
|
<< gregoryShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY_BOUNDARY:
|
|
ss << "#define OSD_PATCH_GREGORY_BOUNDARY\n"
|
|
<< "#define OSD_PATCH_TESS_EVAL_GREGORY_SHADER\n"
|
|
<< gregoryShaderSource;
|
|
break;
|
|
case Far::PatchDescriptor::GREGORY_BASIS:
|
|
ss << "#define OSD_PATCH_GREGORY_BASIS\n"
|
|
<< "#define OSD_PATCH_TESS_EVAL_GREGORY_BASIS_SHADER\n"
|
|
<< gregoryBasisShaderSource;
|
|
break;
|
|
default:
|
|
break; // returns empty (points, lines, quads, ...)
|
|
}
|
|
return ss.str();
|
|
}
|
|
|
|
} // end namespace Osd
|
|
|
|
} // end namespace OPENSUBDIV_VERSION
|
|
} // end namespace OpenSubdiv
|