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https://github.com/PixarAnimationStudios/OpenSubdiv
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This is used to compute patch basis weights for the Osd::*Evaluator classes that are unable to use the C++ implementation from far/patchBasis.h, e.g. the GLSL, HLSL, OpenCL, and CUDA kernels. Instead of duplicating this code for each different kernel language, we share a single implementation which is minimally adapted to accommodate specific language restrictions and syntax. This implementation can also be used by client shader code executed while drawing, e.g. to compute patch basis weights for evaluating varying and face-varying patches.
61 lines
1.9 KiB
C++
61 lines
1.9 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 <string>
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#include "../far/patchDescriptor.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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class GLSLPatchShaderSource {
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public:
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static std::string GetCommonShaderSource();
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static std::string GetPatchBasisShaderSource();
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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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} // 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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