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https://github.com/RGBCube/serenity
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f62cd52d12
All DisplayConnectors should support the mmap interface and it should provide better performance now, so let's just use it and drop support for the DisplayConnector's write interface from the WindowServer side.
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
/*
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* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "ScreenLayout.h"
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#include <AK/Error.h>
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#include <AK/Span.h>
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#include <LibGfx/Color.h>
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#include <sys/ioctl_numbers.h>
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namespace WindowServer {
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// Handles low-level device interfacing for the screen.
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// ScreenBackend is a thin transparent wrapper around framebuffer-related data which is responsible for setting up this data,
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// tearing it down, changing its properties like size, and performing flushes.
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// The screen is intended to directly access the members to perform its function, but it only ever reads from anything
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// except the data in the framebuffer memory.
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class ScreenBackend {
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public:
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virtual ~ScreenBackend() = default;
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virtual ErrorOr<void> open() = 0;
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virtual void set_head_buffer(int index) = 0;
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virtual ErrorOr<void> flush_framebuffer_rects(int buffer_index, Span<FBRect const> rects) = 0;
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virtual ErrorOr<void> unmap_framebuffer() = 0;
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virtual ErrorOr<void> map_framebuffer() = 0;
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virtual ErrorOr<void> flush_framebuffer() = 0;
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virtual ErrorOr<void> set_head_mode_setting(GraphicsHeadModeSetting) = 0;
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virtual ErrorOr<GraphicsHeadModeSetting> get_head_mode_setting() = 0;
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bool m_can_device_flush_buffers { true };
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bool m_can_device_flush_entire_framebuffer { true };
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bool m_can_set_head_buffer { false };
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Gfx::ARGB32* m_framebuffer { nullptr };
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size_t m_size_in_bytes { 0 };
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size_t m_back_buffer_offset { 0 };
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int m_pitch { 0 };
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};
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}
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