65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
//
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// Copyright 2015 Pixar
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//
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// Licensed under the terms set forth in the LICENSE.txt file available at
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// https://opensubdiv.org/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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