86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
/*
|
|
* 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
|
|
*
|
|
* Implementation of Multi Draw Indirect using OpenGL.
|
|
* Fallback if the needed extensions are not supported.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "MEM_guardedalloc.h"
|
|
|
|
#include "BLI_sys_types.h"
|
|
|
|
#include "GPU_batch.h"
|
|
|
|
#include "gpu_drawlist_private.hh"
|
|
|
|
#include "gl_context.hh"
|
|
|
|
namespace blender {
|
|
namespace gpu {
|
|
|
|
/**
|
|
* Implementation of Multi Draw Indirect using OpenGL.
|
|
*/
|
|
class GLDrawList : public DrawList {
|
|
public:
|
|
GLDrawList(int length);
|
|
~GLDrawList();
|
|
|
|
void append(GPUBatch *batch, int i_first, int i_count) override;
|
|
void submit(void) override;
|
|
|
|
private:
|
|
void init(void);
|
|
|
|
/** Batch for which we are recording commands for. */
|
|
GLBatch *batch_;
|
|
/** Mapped memory bounds. */
|
|
GLbyte *data_;
|
|
/** Length of the mapped buffer (in byte). */
|
|
GLsizeiptr data_size_;
|
|
/** Current offset inside the mapped buffer (in byte). */
|
|
GLintptr command_offset_;
|
|
/** Current number of command recorded inside the mapped buffer. */
|
|
uint command_len_;
|
|
/** Is UINT_MAX if not drawing indexed geom. Also Avoid dereferencing batch. */
|
|
GLuint base_index_;
|
|
/** Also Avoid dereferencing batch. */
|
|
GLuint v_first_, v_count_;
|
|
|
|
/** GL Indirect Buffer id. 0 means MultiDrawIndirect is not supported/enabled. */
|
|
GLuint buffer_id_;
|
|
/** Length of whole the buffer (in byte). */
|
|
GLsizeiptr buffer_size_;
|
|
/** Offset of data_ inside the whole buffer (in byte). */
|
|
GLintptr data_offset_;
|
|
|
|
/** To free the buffer_id_. */
|
|
GLContext *context_;
|
|
|
|
MEM_CXX_CLASS_ALLOC_FUNCS("GLDrawList");
|
|
};
|
|
|
|
} // namespace gpu
|
|
} // namespace blender
|