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https://github.com/PixarAnimationStudios/OpenSubdiv
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109a3f5383
In osd layer, we use GLPatchTable (D3D11PatchTable) as a device-specific representation of FarPatchTables instead of DrawContext. GLPatchTable may be used not only for drawing but also for GPU eval APIs (not yet supported though. We may add CudaPatchTable etc as needed). The legacy gregory patch drawing buffers are carved out to the separate class, named GLLegacyGregoryPatchTable. Also face-varying data are split into client side for now, until we add new and more robust face-varying drawing structure (scheduled at 3.1 release) Tentatively replicate PatchArray structure in GLPatchTables. It will be revised in the upcoming change. Shifting hard-coded SRV locations of legacy gregory buffers in HLSL shaders.
87 lines
2.5 KiB
C++
87 lines
2.5 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_GL_LEGACY_GREGORY_PATCH_TABLE_H
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#define OPENSUBDIV3_OSD_GL_LEGACY_GREGORY_PATCH_TABLE_H
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#include "../version.h"
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#include "../far/patchTables.h"
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#include "../osd/nonCopyable.h"
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#include "../osd/opengl.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 GLLegacyGregoryPatchTable
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: private NonCopyable<GLLegacyGregoryPatchTable> {
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public:
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~GLLegacyGregoryPatchTable();
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static GLLegacyGregoryPatchTable *Create(Far::PatchTables const *patchTable);
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void UpdateVertexBuffer(GLuint vbo);
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GLuint GetVertexTextureBuffer() const {
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return _vertexTextureBuffer;
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}
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GLuint GetVertexValenceTextureBuffer() const {
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return _vertexValenceTextureBuffer;
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}
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GLuint GetQuadOffsetsTextureBuffer() const {
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return _quadOffsetsTextureBuffer;
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}
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GLuint GetQuadOffsetsBase(Far::PatchDescriptor::Type type) {
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if (type == Far::PatchDescriptor::GREGORY_BOUNDARY) {
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return _quadOffsetsBase[1];
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}
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return _quadOffsetsBase[0];
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}
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protected:
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GLLegacyGregoryPatchTable();
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private:
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GLuint _vertexTextureBuffer;
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GLuint _vertexValenceTextureBuffer;
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GLuint _quadOffsetsTextureBuffer;
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GLuint _quadOffsetsBase[2]; // gregory, boundaryGregory
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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_GL_LEGACY_GREGORY_PATCH_TABLE_H
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