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Add ability to switch video modes from the system menu.

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I had to change PhysicalPage around a bit for this. Physical pages can now
be instantiated for any arbitrary physical address without worrying that
such pages end up in the kernel page allocator when released.

Most of the pieces were already in place, I just glued everything together.
This commit is contained in:
Andreas Kling
2019-02-17 13:12:59 +01:00
parent 8321908abe
commit 0730b3c15f
7 changed files with 91 additions and 26 deletions
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26
WindowServer/WSScreen.cpp
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@@ -21,12 +21,19 @@ WSScreen::WSScreen(unsigned width, unsigned height)
{
ASSERT(!s_the);
s_the = this;
m_cursor_location = rect().center();
m_framebuffer_fd = open("/dev/bxvga", O_RDWR);
ASSERT(m_framebuffer_fd >= 0);
set_resolution(width, height);
}
WSScreen::~WSScreen()
{
}
void WSScreen::set_resolution(int width, int height)
{
struct BXVGAResolution {
int width;
int height;
@@ -35,13 +42,20 @@ WSScreen::WSScreen(unsigned width, unsigned height)
int rc = ioctl(m_framebuffer_fd, 1985, (int)&resolution);
ASSERT(rc == 0);
size_t framebuffer_size_in_bytes = resolution.width * resolution.height * sizeof(RGBA32) * 2;
if (m_framebuffer) {
size_t previous_size_in_bytes = m_width * m_height * sizeof(RGBA32) * 2;
int rc = munmap(m_framebuffer, previous_size_in_bytes);
ASSERT(rc == 0);
}
size_t framebuffer_size_in_bytes = width * height * sizeof(RGBA32) * 2;
m_framebuffer = (RGBA32*)mmap(nullptr, framebuffer_size_in_bytes, PROT_READ | PROT_WRITE, MAP_SHARED, m_framebuffer_fd, 0);
ASSERT(m_framebuffer && m_framebuffer != (void*)-1);
}
WSScreen::~WSScreen()
{
m_width = width;
m_height = height;
m_cursor_location.constrain(rect());
}
void WSScreen::on_receive_mouse_data(int dx, int dy, bool left_button, bool right_button)