52 lines
1.3 KiB
C++
Executable File
52 lines
1.3 KiB
C++
Executable File
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <array>
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#include <span>
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#include <utility>
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#include <glad/glad.h>
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#include "common/common_types.h"
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#include "common/literals.h"
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#include "video_core/renderer_opengl/gl_resource_manager.h"
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namespace OpenGL {
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using namespace Common::Literals;
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class StreamBuffer {
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static constexpr size_t STREAM_BUFFER_SIZE = 64_MiB;
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static constexpr size_t NUM_SYNCS = 16;
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static constexpr size_t REGION_SIZE = STREAM_BUFFER_SIZE / NUM_SYNCS;
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static constexpr size_t MAX_ALIGNMENT = 256;
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static_assert(STREAM_BUFFER_SIZE % MAX_ALIGNMENT == 0);
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static_assert(STREAM_BUFFER_SIZE % NUM_SYNCS == 0);
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static_assert(REGION_SIZE % MAX_ALIGNMENT == 0);
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public:
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explicit StreamBuffer();
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[[nodiscard]] std::pair<std::span<u8>, size_t> Request(size_t size) noexcept;
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[[nodiscard]] GLuint Handle() const noexcept {
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return buffer.handle;
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}
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private:
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[[nodiscard]] static size_t Region(size_t offset) noexcept {
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return offset / REGION_SIZE;
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}
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size_t iterator = 0;
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size_t used_iterator = 0;
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size_t free_iterator = 0;
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u8* mapped_pointer = nullptr;
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OGLBuffer buffer;
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std::array<OGLSync, NUM_SYNCS> fences;
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};
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} // namespace OpenGL
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