82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
//
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// Copyright 2015 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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#ifndef OPENSUBDIV3_OSD_GLSL_PATCH_SHADER_SOURCE_H
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#define OPENSUBDIV3_OSD_GLSL_PATCH_SHADER_SOURCE_H
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#include "../version.h"
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#include "../far/patchDescriptor.h"
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#include <string>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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/// \brief Provides shader source which can be used by client code.
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class GLSLPatchShaderSource {
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public:
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/// \brief Returns shader source which can be used to evaluate
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/// position and first and second derivatives on piecewise parametric
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/// patches resulting from subdivision refinement.
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static std::string GetPatchBasisShaderSource();
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/// \brief Returns shader source which can be used while drawing
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/// piecewise parametric patches resulting from subdivision refinement,
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/// e.g. while using GPU HW tessellation.
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static std::string GetPatchDrawingShaderSource();
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/// \name Alternative methods
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/// \{
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/// These methods return shader source which can be used
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/// while drawing. Unlike the methods above, the source returned
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/// by these methods includes support for legacy patch types along
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/// with dependencies on specific resource bindings and interstage
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/// shader variable declarations.
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static std::string GetCommonShaderSource();
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static std::string GetVertexShaderSource(
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Far::PatchDescriptor::Type type);
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static std::string GetTessControlShaderSource(
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Far::PatchDescriptor::Type type);
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static std::string GetTessEvalShaderSource(
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Far::PatchDescriptor::Type type);
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/// \}
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};
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} // end namespace Osd
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif // OPENSUBDIV3_OSD_GLSL_PATCH_SHADER_SOURCE
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