diff options
Diffstat (limited to 'source/blender/gpu/opengl/gl_index_buffer.cc')
-rw-r--r-- | source/blender/gpu/opengl/gl_index_buffer.cc | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/source/blender/gpu/opengl/gl_index_buffer.cc b/source/blender/gpu/opengl/gl_index_buffer.cc new file mode 100644 index 00000000000..03a9607a00b --- /dev/null +++ b/source/blender/gpu/opengl/gl_index_buffer.cc @@ -0,0 +1,62 @@ +/* + * 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 + */ + +#include "gl_backend.hh" +#include "gl_debug.hh" + +#include "gl_index_buffer.hh" + +namespace blender::gpu { + +GLIndexBuf::~GLIndexBuf() +{ + GLBackend::get()->buf_free(ibo_id_); +} + +void GLIndexBuf::bind(void) +{ + if (is_subrange_) { + static_cast<GLIndexBuf *>(src_)->bind(); + return; + } + + if (ibo_id_ == 0) { + glGenBuffers(1, &ibo_id_); + + if (data_ == nullptr) { + debug::raise_gl_error("Trying to use Index Buffer but the buffer contains no data"); + } + } + + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo_id_); + + if (data_ != nullptr) { + size_t size = this->size_get(); + /* Sends data to GPU. */ + glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, data_, GL_STATIC_DRAW); + /* No need to keep copy of data in system memory. */ + MEM_SAFE_FREE(data_); + } +} + +} // namespace blender::gpu
\ No newline at end of file |