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Kernel/Graphics: Ensure we set BGR format of bochs-display if supported

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Instead of blindly forcing BGR format on the bochs-display device, let's
ensure we do that only on QEMU bochs-display and not on VirtualBox
graphics adapter too.
This commit is contained in:
Liav A 2021-09-27 10:37:15 +03:00 • committed by Andreas Kling
parent de1b649783
commit 38bddca378
2 changed files with 18 additions and 1 deletions
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14
Kernel/Graphics/Bochs/GraphicsAdapter.cpp
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@ -19,6 +19,8 @@
#define VBE_DISPI_IOPORT_INDEX 0x01CE
#define VBE_DISPI_IOPORT_DATA 0x01CF
#define VBE_DISPI_ID5 0xB0C5
#define VBE_DISPI_INDEX_ID 0x0
#define VBE_DISPI_INDEX_XRES 0x1
#define VBE_DISPI_INDEX_YRES 0x2
@ -156,6 +158,14 @@ static u16 get_register_with_io(u16 index)
return IO::in16(VBE_DISPI_IOPORT_DATA);
}
BochsGraphicsAdapter::IndexID BochsGraphicsAdapter::index_id() const
{
if (m_io_required) {
return get_register_with_io(0);
}
return m_registers->bochs_regs.index_id;
}
void BochsGraphicsAdapter::set_resolution_registers_via_io(size_t width, size_t height)
{
dbgln_if(BXVGA_DEBUG, "BochsGraphicsAdapter resolution registers set to - {}x{}", width, height);
@ -184,7 +194,9 @@ void BochsGraphicsAdapter::set_resolution_registers(size_t width, size_t height)
m_registers->bochs_regs.enable = VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED;
full_memory_barrier();
m_registers->bochs_regs.bank = 0;
set_framebuffer_to_little_endian_format();
if (index_id().value() == VBE_DISPI_ID5) {
set_framebuffer_to_little_endian_format();
}
}
bool BochsGraphicsAdapter::try_to_set_resolution(size_t output_port_index, size_t width, size_t height)