mirror of https://github.com/PCSX2/pcsx2.git
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
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/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2021 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "common/Pcsx2Defs.h"
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#include "glad.h"
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#include <memory>
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#include <tuple>
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#include <vector>
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namespace GL
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{
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/// Provides a buffer for streaming data to the GPU, ideally in write-combined memory.
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class StreamBuffer
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{
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public:
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virtual ~StreamBuffer();
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__fi GLuint GetGLBufferId() const { return m_buffer_id; }
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__fi GLenum GetGLTarget() const { return m_target; }
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__fi u32 GetSize() const { return m_size; }
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void Bind();
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void Unbind();
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struct MappingResult
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{
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void* pointer;
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u32 buffer_offset;
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u32 index_aligned; // offset / alignment, suitable for base vertex
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u32 space_aligned; // remaining space / alignment
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};
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virtual MappingResult Map(u32 alignment, u32 min_size) = 0;
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virtual void Unmap(u32 used_size) = 0;
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static std::unique_ptr<StreamBuffer> Create(GLenum target, u32 size);
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protected:
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StreamBuffer(GLenum target, GLuint buffer_id, u32 size);
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GLenum m_target;
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GLuint m_buffer_id;
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u32 m_size;
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};
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} // namespace GL
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