Can plot on a surface from lua

1 files changed, 14 insertions, 2 deletions

diff --git a/src/sysapp/login/main.lua b/src/sysapp/login/main.lua
index dec8b82..50ecd20 100644
--- a/src/sysapp/login/main.lua
+++ b/src/sysapp/login/main.lua
@@ -1,6 +1,7 @@
 local sys = require 'lx.sys'
 local sysdef= require 'lx.sysdef'
 local ioctl = require 'lx.ioctl'
+local draw = require 'lx.draw'
 
 print("Hello, world!")
 
@@ -10,11 +11,22 @@ print("vesa_fd = " .. vesa_fd)
 local vesa_info = ioctl.fb_get_info(vesa_fd)
 print("vesa_info = ", vesa_info)
 
+local surface = draw.from_fd(vesa_fd, vesa_info)
+for x = 0, 255 do
+	for y = 0, 255 do
+		surface:plot(x, y, surface:rgb(x, y, 0))
+	end
+end
+
 local i = 1
 while true do
-	print(i)
+	surface:plot(i % (vesa_info.width-3),
+				 i % (vesa_info.height-1),
+				 surface:rgb(i % 256,
+				 			 (i + 96) % 256,
+				 			 (i + 2*96) % 256))
 	i = i + 1
-	sys.usleep(1000000)
+	if i % 100000 == 0 then print(i) end
 end
 
 os.exit()