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os: fix fb_boot_drv framebuffer padding

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Fixes #2486
This commit is contained in:
Johannes Kliemann 2017-08-08 15:55:42 +02:00 committed by Christian Helmuth
parent 7f2087e105
commit c509cabdba
2 changed files with 12 additions and 6 deletions
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16
repos/os/src/drivers/framebuffer/boot/framebuffer.cc
View File

@ -35,10 +35,13 @@ Session_component::Session_component(Genode::Env &env,
Genode::log("Framebuffer with ", _core_fb.width, "x", _core_fb.height,
"x", _core_fb.bpp, " @ ", (void*)_core_fb.addr);
/* calculate required padding to align framebuffer to 16 pixels */
_pad = (16 - (_core_fb.width % 16)) & 0x0f;
_fb_mem.construct(
_env,
_core_fb.addr,
_core_fb.width * _core_fb.height * _core_fb.bpp / 4,
(_core_fb.width + _pad) * _core_fb.height * _core_fb.bpp / 4,
true);
_fb_mode = Mode(_core_fb.width, _core_fb.height, Mode::RGB565);
@ -67,11 +70,12 @@ void Session_component::refresh(int x, int y, int w, int h)
Genode::Pixel_rgb565 *pixel_16 = _fb_ram->local_addr<Genode::Pixel_rgb565>();
for (Genode::uint32_t r = u_y; r < u_h; ++r){
for (Genode::uint32_t c = u_x; c < u_w; ++c){
Genode::uint32_t i = c + r * _core_fb.width;
pixel_32[i].rgba(
pixel_16[i].r(),
pixel_16[i].g(),
pixel_16[i].b(),
Genode::uint32_t s = c + r * _core_fb.width;
Genode::uint32_t d = c + r * (_core_fb.width + _pad);
pixel_32[d].rgba(
pixel_16[s].r(),
pixel_16[s].g(),
pixel_16[s].b(),
0);
}
}

2
repos/os/src/drivers/framebuffer/boot/include/framebuffer.h
View File

@ -50,6 +50,8 @@ class Framebuffer::Session_component : public Genode::Rpc_object<Framebuffer::Se
Timer::Connection timer { _env };
Genode::uint8_t _pad;
public:
Session_component(Genode::Env &, Genode::Xml_node);
Mode mode() const override;