Campbell Barton
c434782e3a
Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
79 lines
1.6 KiB
C++
79 lines
1.6 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2020 Blender Foundation. All rights reserved. */
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/** \file
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* \ingroup gpu
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*/
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#include "gl_context.hh"
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#include "gl_debug.hh"
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#include "gl_index_buffer.hh"
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namespace blender::gpu {
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GLIndexBuf::~GLIndexBuf()
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{
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GLContext::buf_free(ibo_id_);
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}
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void GLIndexBuf::bind()
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{
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if (is_subrange_) {
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static_cast<GLIndexBuf *>(src_)->bind();
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return;
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}
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const bool allocate_on_device = ibo_id_ == 0;
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if (allocate_on_device) {
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glGenBuffers(1, &ibo_id_);
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}
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo_id_);
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if (data_ != nullptr || allocate_on_device) {
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size_t size = this->size_get();
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/* Sends data to GPU. */
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, data_, GL_STATIC_DRAW);
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/* No need to keep copy of data in system memory. */
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MEM_SAFE_FREE(data_);
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}
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}
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void GLIndexBuf::bind_as_ssbo(uint binding)
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{
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bind();
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BLI_assert(ibo_id_ != 0);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, binding, ibo_id_);
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}
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const uint32_t *GLIndexBuf::read() const
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{
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BLI_assert(is_active());
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void *data = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_READ_ONLY);
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uint32_t *result = static_cast<uint32_t *>(data);
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return result;
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}
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bool GLIndexBuf::is_active() const
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{
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if (!ibo_id_) {
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return false;
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}
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int active_ibo_id = 0;
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glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &active_ibo_id);
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return ibo_id_ == active_ibo_id;
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}
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void GLIndexBuf::upload_data()
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{
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bind();
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}
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void GLIndexBuf::update_sub(uint start, uint len, const void *data)
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{
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glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, start, len, data);
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}
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} // namespace blender::gpu
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