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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2020 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup gpu
*/
#pragma once
#include "MEM_guardedalloc.h"
#include "gpu_index_buffer_private.hh"
#include "glew-mx.h"
namespace blender::gpu {
class GLIndexBuf : public IndexBuf {
friend class GLBatch;
friend class GLDrawList;
private:
GLuint ibo_id_ = 0;
public:
~GLIndexBuf();
void bind(void);
void *offset_ptr(uint additional_vertex_offset) const
{
additional_vertex_offset += index_start_;
if (index_type_ == GPU_INDEX_U32) {
return (GLuint *)0 + additional_vertex_offset;
}
return (GLushort *)0 + additional_vertex_offset;
}
GLuint restart_index(void) const
{
return (index_type_ == GPU_INDEX_U16) ? 0xFFFFu : 0xFFFFFFFFu;
}
MEM_CXX_CLASS_ALLOC_FUNCS("GLIndexBuf")
};
static inline GLenum to_gl(GPUIndexBufType type)
{
return (type == GPU_INDEX_U32) ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT;
}
} // namespace blender::gpu
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