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//
// 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.
//
#ifndef OPENSUBDIV_EXAMPLES_MTL_CONTROL_MESH_DISPLAY_H
#define OPENSUBDIV_EXAMPLES_MTL_CONTROL_MESH_DISPLAY_H
#include <Metal/Metal.h>
#include <opensubdiv/far/topologyLevel.h>
class MTLControlMeshDisplay {
public:
MTLControlMeshDisplay(id<MTLDevice> device, MTLRenderPipelineDescriptor* pipelineDescriptor);
~MTLControlMeshDisplay() = default;
void Draw(id<MTLRenderCommandEncoder> encoder,
id<MTLBuffer> vertexBuffer,
const float *modelViewProjectionMatrix);
void SetTopology(OpenSubdiv::Far::TopologyLevel const &level);
bool GetEdgesDisplay() const { return _displayEdges; }
void SetEdgesDisplay(bool display) { _displayEdges = display; }
bool GetVerticesDisplay() const { return _displayVertices; }
void SetVerticesDisplay(bool display) { _displayVertices = display; }
private:
bool createProgram(MTLRenderPipelineDescriptor* pipelineDescriptor);
bool _displayEdges;
bool _displayVertices;
id<MTLDevice> _device;
int _numEdges, _numPoints;
id<MTLRenderPipelineState> _renderPipelineState;
id<MTLBuffer> _vertexSharpnessBuffer;
id<MTLBuffer> _edgeSharpnessBuffer;
id<MTLBuffer> _edgeIndicesBuffer;
};
#endif // OPENSUBDIV_EXAMPLES_MTL_CONTROL_MESH_DISPLAY_H
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