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
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2016 by Mike Erwin. All rights reserved. */
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/** \file
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* \ingroup gpu
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*
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* Mimics old style opengl immediate mode drawing.
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*/
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#pragma once
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#include "MEM_guardedalloc.h"
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#include "glew-mx.h"
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#include "gpu_immediate_private.hh"
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namespace blender::gpu {
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/* size of internal buffer */
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#define DEFAULT_INTERNAL_BUFFER_SIZE (4 * 1024 * 1024)
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class GLImmediate : public Immediate {
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private:
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/* Use two buffers for strict and non-strict vertex count to
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* avoid some huge driver slowdown (see T70922).
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* Use accessor functions to get / modify. */
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struct {
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/** Opengl Handle for this buffer. */
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GLuint vbo_id = 0;
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/** Offset of the mapped data in data. */
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size_t buffer_offset = 0;
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/** Size of the whole buffer in bytes. */
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size_t buffer_size = 0;
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} buffer, buffer_strict;
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/** Size in bytes of the mapped region. */
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size_t bytes_mapped_ = 0;
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/** Vertex array for this immediate mode instance. */
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GLuint vao_id_ = 0;
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public:
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GLImmediate();
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~GLImmediate();
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uchar *begin() override;
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void end() override;
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private:
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GLuint &vbo_id()
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{
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return strict_vertex_len ? buffer_strict.vbo_id : buffer.vbo_id;
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};
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size_t &buffer_offset()
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{
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return strict_vertex_len ? buffer_strict.buffer_offset : buffer.buffer_offset;
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};
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size_t &buffer_size()
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{
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return strict_vertex_len ? buffer_strict.buffer_size : buffer.buffer_size;
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};
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};
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} // namespace blender::gpu
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