Oh gosh. Sounded like you wasted a long time. Hopefully you don't get too crazy over working on this, you go yandere. XD (I'm sorry I had to go there because your profile picture)
Homebrew [Release] Lua Player Plus 3DS (lpp-3ds) - LUA interpreter for 3DS
- Thread starter Rinnegatamante
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Is there any way I can draw new stuff on the screen, over the top of what's already there, without having to clear the screen and draw it all over again? I'm trying to optimize my script because currently it's running at like 5 frames per second.
And do notes slow down lpp? Because I have a lot of them.
And do notes slow down lpp? Because I have a lot of them.
Last edited by HexZyle,
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The annoted out "redraw" variable was part of me trying to disable redraws when they weren't needed (a value of 2 meant that the whole screen had been cleared, so redraw everything, a value of 1 meant that new stuff had been drawn but it was over the top of old stuff, and a value of 0 meant that nothing new had been updated this frame)
Yes, I know that the block at line 184 is a fucking doozy and it's the one that's slowing my program down while it's drawing new text. I want the text to stick around though, and not have to redraw it every frame, even if I'm refreshing stuff on the top screen. So far I've been unsuccessful though, any attempt I've had either makes my stuff clear instantly, or results in an epileptic fit-inducing refreshing sequence as the whole screen flickers black every frame.
Yes, I know that the block at line 184 is a fucking doozy and it's the one that's slowing my program down while it's drawing new text. I want the text to stick around though, and not have to redraw it every frame, even if I'm refreshing stuff on the top screen. So far I've been unsuccessful though, any attempt I've had either makes my stuff clear instantly, or results in an epileptic fit-inducing refreshing sequence as the whole screen flickers black every frame.
Code:
Graphics.init() -- Init GPU
Sound.init() -- init Sound
white = Color.new(255,255,255)
black = Color.new(0,0,0)
red = Color.new(255,0,0)
blue = Color.new(0,0,255)
green = Color.new(0,255,0)
c00 = Color.new(226,90,90) --red
c15 = Color.new(30,38,15)
c30 = Color.new(61,76,30)
c45 = Color.new(92,114,45)
c60 = Color.new(123,153,61)
c75 = Color.new(154,191,76)
c90 = Color.new(183,229,91)
oldpad = Controls.read()
--LOAD RESOURCES /////////////////////////////////////////
img_cli_background = Screen.loadImage(System.currentDirectory().."/images/cli_background.png")
img_cli_header = Screen.loadImage(System.currentDirectory().."/images/cli_header.png")
img_menu_background = Screen.loadImage(System.currentDirectory().."/images/menu_background.png")
img_menu_main = Screen.loadImage(System.currentDirectory().."/images/menu_main.png")
img_arc_logingui = Screen.loadImage(System.currentDirectory().."/images/arc_logingui.png")
img_arc_uploader = Screen.loadImage(System.currentDirectory().."/images/arc_uploader.png")
img_arc_uploader_pip = Screen.loadImage(System.currentDirectory().."/images/arc_uploader_pip.png")
img_blank = Screen.createImage(20,20,white)
wav_boot = Sound.openWav(System.currentDirectory().."/sounds/boot.wav")
fnt_small = Font.load(System.currentDirectory().."/fonts/3by5.ttf")
Font.setPixelSizes(fnt_small,5)
dofile(System.currentDirectory().."/gamedata/ds_queue_init.lua")
q_commands = {}
--q_commands.value = {}
q_commands.fontcol = {}
ds_queue_create(q_commands)
--ds_queue_create(q_commands.value)
ds_queue_create(q_commands.fontcol)
dofile(System.currentDirectory().."/gamedata/text_init.lua")
ds_queue_stack(q_commands,txt.startup)
ds_queue_stack(q_commands.fontcol,txt.startup.fontcol)
dofile(System.currentDirectory().."/gamedata/fps_init.lua")
redraw = 2
--redraw = {}
--redraw[TOP_SCREEN] = 2
--redraw[BOTTOM_SCREEN] = 2
dofile(System.currentDirectory().."/gamedata/commands_init.lua")
--////////////////////////////////////////////////////////
--Programs and Gui
--////////////////////////////////////////////////////////
topscreen_enabled = false
logingui_arc = false
mainmenu_arc = false
filebrowser_arc = false
bbs_arc = false
rvemail_arc = false
keyboard_arc = false
uploader_arc = false
biosbusy = false
local i = 1
cli_text = {}
repeat
cli_text[i] = ''
--cli_text[i].value = {} --the value table is used for customizable data per line... not needed yet
cli_text[i+50] = c30 --plus 50 is the magic number for "font"
i = i+1
until i==35
cli_text.index = 0
--BOOT SECT--
boot = false
debugstr = ''
while true do
pad = Controls.read()
tx,ty = Controls.readTouch()
if boot == false then --PRE BOOT STAGE/////////////////////////////////////////
Screen.waitVblankStart()
Screen.refresh()
Screen.clear(TOP_SCREEN)
Screen.clear(BOTTOM_SCREEN)
Screen.debugPrint(6,6,"Press X to launch RomanVault", white, TOP_SCREEN)
if (Controls.check(pad,KEY_X)) then
boot = true
Screen.clear(TOP_SCREEN)
Screen.clear(BOTTOM_SCREEN)
--Sound.play(wav_boot,NO_LOOP,0x09)
end
if (Controls.check(pad,KEY_SELECT)) and not (Controls.check(oldpad,KEY_SELECT)) then
local user = System.getUsername()
--System.addNotification("Welcome",user..", RomanVault awaits you.")
end
else --/////////////////////////////////////////////////////////////////////////
--if (Controls.check(pad,KEY_B)) and not (Controls.check(oldpad,KEY_B)) then
-- Screen.saveBitmap(bitmap2,"/bitmap.bmp")
-- System.takeScreenshot("/screenshot.bmp",false)
--end
--SHIFTING QUEUED COMMANDS TO THE COMMAND LINE INTERFACE
if q_commands.size > 0 and biosbusy == false then
if cli_text.index == 24 then --we shift all the lines down, and then add the new line to 35
--redraw=2
local i = 1
repeat
cli_text[i] = cli_text[i+1]
cli_text[i+50] = cli_text[i+1+50]
--cli_text[i].value = cli_text[i+1].value
i = i+1
until i==24
local str = ds_queue_dequeue(q_commands)
str = read_command(str)
cli_text[i] = str
--cli_text[i] = ds_queue_dequeue(q_commands)
cli_text[i+50] = ds_queue_dequeue(q_commands.fontcol)
--cli_text[i].value = ds_queue_dequeue(q_commands.value)
else --we add the value to the index and add one to index
--redraw=1
cli_text.index = cli_text.index + 1
local str = ds_queue_dequeue(q_commands)
str = read_command(str)
cli_text[cli_text.index] = str
--cli_text[cli_text.index] = ds_queue_dequeue(q_commands)
cli_text[cli_text.index +50] = ds_queue_dequeue(q_commands.fontcol)
end
end
if biosbusy == true then
--bios queued commands here
process_command()
end
--START OF DRAW FUNCTIONS/////////////////////////////
Screen.waitVblankStart()
Screen.refresh()
--Screen.clear(TOP_SCREEN)
--Screen.clear(BOTTOM_SCREEN)
--if redraw == 2 then
Screen.clear(TOP_SCREEN)
Screen.clear(BOTTOM_SCREEN)
--end
--if redraw[TOP_SCREEN] ==2 then Screen.clear(TOP_SCREEN) end
--if redraw[BOTTOM_SCREEN]==2 then Screen.clear(BOTTOM_SCREEN) end
Screen.debugPrint(6,20,"q_commands.size = "..q_commands.size, white, TOP_SCREEN)
Screen.debugPrint(6,34,"debugstr = "..debugstr, white, TOP_SCREEN)
--TOP SCREEN//////////////////////////////////////////
if topscreen_enabled then
--if redraw==2 then
Screen.drawImage(0,0,img_menu_background,TOP_SCREEN)
Screen.drawImage(0,0,img_menu_main,TOP_SCREEN)
--end
end
fps_draw()
--BOTTOM SCREEN///////////////////////////////////////
--if redraw==2 then
Screen.drawImage(0,0,img_cli_background,BOTTOM_SCREEN)
Screen.drawImage(0,0,img_cli_header,BOTTOM_SCREEN)
--end
--if redraw>1 then
local i=1
while i < cli_text.index + 1 do
if cli_text[i] ~= nil then --as long as the line actually has text in it? Otherwise it errors
Font.print(fnt_small, 1, 6*i +15, cli_text[i],cli_text[i+50],BOTTOM_SCREEN)
end
i=i+1
end
if logingui_arc then
Screen.drawImage(0,0,img_arc_logingui,BOTTOM_SCREEN)
end
if uploader_arc then
Screen.drawImage(87,105,img_arc_uploader,BOTTOM_SCREEN)
local i = 0
while i < uploader_arc_progress do
Screen.drawImage(97+(i*3),117,img_arc_uploader_pip,BOTTOM_SCREEN)
i = i+1
end
end
--end
--END OF DRAW FUNCTION/////////////////////////////////
--redraw[TOP_SCREEN] = 0
--redraw[BOTTOM_SCREEN] = 0
--redraw=0
--/////
end
--THESE FUNCTIONS ALWAYS RUN///////////////////////////////
if (Controls.check(pad,KEY_START)) then --shutdown sequence
Graphics.term()
Sound.close(wav_boot)
Sound.term()
System.exit()
end
Screen.flip()
oldpad = pad
end- Joined
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If you have to work with such a big number of images, just use GPU (Graphics module) instead of CPU (Screen module). It will massively boost your framerate.
This is text, not images. 24 lines of text, and the 3DS is chugging when it pulls each one out of an array and draws all 24 lines individually every step. I thought there might have been a way to not update the screen when nothing new is happening in order to increase response time.
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Everytime you update the screen, you re-blit images on the screen. CPU rendering is very bad for images blit (especially for PNG images which are saved in memory as 32 bpp images instead of 24 bpp (JPG / BMP) so they take also extra time to proper do alpha blending).
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Right now, lpp-3ds doesn't support GPU text rendering but re-blending images with GPU is much more faster then CPU ones. You shouldn't have any framedrop.
If I were you I would try drawing 24 static strings and see if that performs at the same speed. Even with CPU rending I don't think it should be quite this slow, but it is possible. But @Rinnegatamante is suggesting you replace the Screen.drawImage calls with GPU rendering in order to speed those up significantly, which should give your Font calls more time to render.
What if I created images of each letter, and then built a script that "wrote" my text using the assembled letter images? Would that be horrendously laggy, or would it work fine?
OH I see, so the GPU could handle the images while the CPU handled the text... sort of like multithreading?
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It would work fine (it's what Font module does but with CPU rendering) but you should write a proper rendering function which take count of glyph size and all other things about your font).
My font is monospaced (in fact each character is 3x5, except for Ms and Ws which are designed to take up 2 character spaces) so I don't need to care about glyph size
Bah! How does one create a string solely consisting of a backslash without some ridiculous workaround? Notepad++ is acting weird about it, and I'm not sure if a lua interpreter will too.
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Alright, I made my own gpu drawtext script, and after I switched my whole program over to gpu instead of cpu, the framerate improvement is like night and day.
The loading time though for the program has taken a pretty big hit as I have to load the font in (although I do have every letter as a separate image, I think I might be able to get a huge speed boost if I loaded in the font as a single image, and used the partial draw functions)
Thanks for all the help!
The loading time though for the program has taken a pretty big hit as I have to load the font in (although I do have every letter as a separate image, I think I might be able to get a huge speed boost if I loaded in the font as a single image, and used the partial draw functions)
Thanks for all the help!
Last edited by HexZyle,
How does it work out of curiosity, I'm interested
I load all the characters into individual images (although it takes a while, I think loading in a single sheet and then using Graphics.drawPartialImage() would be way better for load times)
Note that my characters are monospaced,so I don't need to worry about how far along to draw each letter (except for M and W which are double width, but they're currently being converted in the text parser from "M" to "M " and "W" to "W ". It's a little clumsy having it actually saved in the strings like that so I plan to change it soon so that it's handled by this function instead)
The *4 at the Graphics.drawImage line is because my font's characters are 3 pixels wide, with a spacing of 1 pixel between them.
Code:
gpuglyph = {}
gpuglyph['A'] = Graphics.loadImage(System.currentDirectory().."/fonts/A.png")
gpuglyph['B'] = Graphics.loadImage(System.currentDirectory().."/fonts/B.png")
gpuglyph['C'] = Graphics.loadImage(System.currentDirectory().."/fonts/C.png")
gpuglyph['D'] = Graphics.loadImage(System.currentDirectory().."/fonts/D.png")
gpuglyph['E'] = Graphics.loadImage(System.currentDirectory().."/fonts/E.png")
gpuglyph['F'] = Graphics.loadImage(System.currentDirectory().."/fonts/F.png")
gpuglyph['G'] = Graphics.loadImage(System.currentDirectory().."/fonts/G.png")
gpuglyph['H'] = Graphics.loadImage(System.currentDirectory().."/fonts/H.png")
gpuglyph['I'] = Graphics.loadImage(System.currentDirectory().."/fonts/I.png")
gpuglyph['J'] = Graphics.loadImage(System.currentDirectory().."/fonts/J.png")
gpuglyph['K'] = Graphics.loadImage(System.currentDirectory().."/fonts/K.png")
gpuglyph['L'] = Graphics.loadImage(System.currentDirectory().."/fonts/L.png")
gpuglyph['M'] = Graphics.loadImage(System.currentDirectory().."/fonts/M.png")
gpuglyph['N'] = Graphics.loadImage(System.currentDirectory().."/fonts/N.png")
--you get the point
function gpu_drawtext(x, y, text, font_color) --there was an i_pos planned to take account of that M and W use up two spaces, but I can put that in later
local i_str=0 --(byte) the current position in the string
local i_chr='' --(string) the character at position i_str of the string
local i_img=nil --(file id) the image file representing the character
local str_length = string.len(text)
while i_str < str_length do
i_str = i_str + 1 --go to next character in the string
i_chr = string.sub(text, i_str, i_str) --obtain character
i_img = gpuglyph[i_chr] --lookup image file for said character
Graphics.drawImage(x+((i_str-1)*4), y, i_img, font_color)
end
end
Last edited by HexZyle,
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