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https://github.com/RGBCube/serenity
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13e9947b4b
In case of possible framebuffer mapping overflow, just fallback to the safe mode-setting of the DisplayConnector, because in that state we know for sure that we can map a usable framebuffer (otherwise it is a bug in the Kernel, and not WindowServer).
49 lines
1.4 KiB
C++
49 lines
1.4 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 "ScreenBackend.h"
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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 <AK/String.h>
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#include <sys/ioctl_numbers.h>
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namespace WindowServer {
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class HardwareScreenBackend : public ScreenBackend {
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public:
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virtual ~HardwareScreenBackend();
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explicit HardwareScreenBackend(String device);
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virtual ErrorOr<void> open() override;
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virtual void set_head_buffer(int index) override;
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virtual ErrorOr<void> flush_framebuffer_rects(int buffer_index, Span<FBRect const> rects) override;
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virtual ErrorOr<void> flush_framebuffer() override;
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virtual ErrorOr<void> unmap_framebuffer() override;
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virtual ErrorOr<void> map_framebuffer() override;
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virtual ErrorOr<void> set_safe_head_mode_setting() override;
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virtual ErrorOr<void> set_head_mode_setting(GraphicsHeadModeSetting) override;
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virtual ErrorOr<GraphicsHeadModeSetting> get_head_mode_setting() override;
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String m_device {};
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int m_display_connector_fd { -1 };
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Gfx::ARGB32* scanline(int buffer_index, int y) const
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{
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size_t buffer_offset = buffer_index == 1 ? m_back_buffer_offset : 0;
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return reinterpret_cast<Gfx::ARGB32*>(((u8*)m_framebuffer) + buffer_offset + (y * m_pitch));
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}
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};
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}
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