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  • gnu screen - changing the default escape command key to ALT-X?

    - by Siva
    In GNU screen, I want to change the default command binding to Alt-s (by tweaking .screenrc) instead of the default C-a, the reason is I use emacs hence GNU screen binds the C-a key, sending "C-a" to the emacs becomes tedious (as @Nils said, to send "C-a" I should type "C-a a"), as well as "C-a" in bash shell, and I could change the escape to C- but some of them are already mapped in emacs and other combinations are not as easy as ALT-s . If anyone has already done a ALT key mapping, please do let me know.

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  • Workaround to extend limited screen real-estate on Windows?

    - by Brian
    I need a means to use a software tool that requires at least 900 pixels of vertical resolution (as in, the "OK" button to save settings won't be reachable on smaller displays) on a laptop/projector with only 768 pixels of vertical resolution for a training session. So far the only workaround that's been suggested is to memorize the number of tab stops to reach the "OK" and "Cancel" buttons. Any suggestions on a better workaround? What I'd like to see is a utility that would let me treat the physical display as a 1024x768 view port into a larger, virtual display area. Does anything like that exist? Anything else that might help?

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  • How to run Windows 7 On-Screen Keyboard in Windows XP?

    - by frbry
    I'm searching for an OSK application for Windows XP that can be resized. It also must save the new size of the windows so the next time it starts, remember the previous size. The one coming along with Windows 7 is the perfect match. But unfortunately it must run on WinXP. So... Thanks in advance.

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  • How can I make XAnalogTV fill my screen?

    - by Breakthrough
    I recently installed xscreensaver, as well as the additional/extra screensavers. Many of the OpenGL ones function correctly, going fullscreen as expected. However, for some reason, the XAnalogTV screensaver leaves two "blank" spots on the edges of my screen. If I manually launch XAnalogTV, it displays a window, which it fills correctly. When I maximize the window, the same effect occurs: the window maximizes, but the two edges of the screen are literally "transparent". This effect also occurs when the screensaver is set to fullscreen. For these reasons, I believe the problem may be related to the aspect ratio of the screen. The edges of the screen are literally "ignored", with nothing being drawn there. Specifically, note the transition between the maximized and full-screen screenshots (with the un-drawn whitespace shrinking as the vertical height has been increased). For reference, I am running Xubuntu 12.04 on a Dell Vostro 1520 (Intel P8600, Nvidia 9300M) with a 1440 x 900 display (16:10). I have also set the GetViewPortIsFullOfLies preference to true. Is there any way to force XAnalogTV to fill my entire screen? Relevant screenshots (windowed, maximized, and full-screen, respectively):

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  • Program (or perhaps built-in feature of Windows 7) to change wallpaper depending on screen resolution?

    - by Lasse V. Karlsen
    I have a laptop with a resolution of 1680x1050. At work I use 2x 1280x1024 monitors, and sometimes I present using a projector that is 1024x768. My wallpaper, that I made for 1680x1050, looks awful on the other resolutions. Is there anything I can do that would make Windows 7 switch to a different wallpaper that has been cropped appropriately? ie. can I give Windows more than one wallpaper, with different resolutions, and have Windows 7 switch automatically to a matching one? If there is a free (or relatively cheap) piece of software I could download and install that would fix it, that would be OK too.

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  • Why does the screen resolution of 1440x900 suddenly disappears from Intel GMA Control Panel?

    - by GeneQ
    I'm using a Vostro 1200 laptop with the Mobile Intel(R) 965 Express Chipset powering its graphics and running Vista 32-bit SP2 . I've been using the Vostro with a Dell SE198WFP LCD Monitor as the external display since day one for about two years without any problems. Recently, I plugged the Vostro into a couple of other monitors. The problem is, now the native resolution for my main monitor's (the SE198WFP) resolution of 1440x900 @ 60 Hz is no longer available. (See below) I've tried everything from uninstalling and reinstalling the Intel drivers as well as the monitor drivers to no avail. I've Goggled that this problem and it appears that this has happened to other people but all the answers involve people giving up in frustration or reinstalling; both terrible outcomes. Has anybody ever figured why this happens and have a good solution? Thanks. UPDATE: This dude has a complicated solution, which I haven't tried yet. His explanations for the problem was After an exausting search for an answer to the matter of why my brand new 19? widescreen monitor’s native resolution (1440×900) was unavailible (sic) in the display properties, I finally stumbled upon an article a person posted on Intel’s forums that basically explained what shannanigans Intel had been up to with their GMA 950 line of onboard graphic solutions. Not very comforting.

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  • Video screen recording + add text (subtitle), export as .flv. What programs?

    - by RasmusWriedtLarsen
    I have to record a video to showcase a tool I've made. It's going to include my talking, but I also want some overlay text (subtitles) for people who doesn't have sound. I'm looking for a program that will let me add a text overlay (as subtitle) for my video, and if possible, export it as .flv . I've tried this so far: Used CamStudio for recording, using their lossless format. Converted the .avi file to a .flv using Any Video Converter (free version) I've been having some trouble with the output of CamStudio, some programs can't play the file right, it skips forward and backward. (VLC, Adobe Media Encoder CS4) So I'm looking for a program that accepts videos from CamStudio*, can add text to my video, and hopefully export as flv. *(If that's not possible I'm open for other recording programs). I'd like to ONLY use free programs, and I'm on Windows XP. Looking forward to your help :)

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  • How do I keep windows XP from automatically changing the screen resolution?

    - by roamn
    I have an Asus EEEBox (EB202, intel GMA 950) hooked up to my 1080p TV (DVI-HDMI cable). I use it to watch standard definition movies and TV shows. I prefer to run at 1280x720 so that I can see things more easily, but every time I turn off the TV, then back on again, the resolution defaults to 1080p (1920x1080). How can I force a specific resolution? If that's not possible, is there a way to use a batch script to switch to the desired resolution faster?

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  • Can I disable the message line when launching ``screen -RR``

    - by Jimm Chen
    screen -RR is great. It does one of the two thing automatically: If there is any detached screen session, it picks up one can attach to it. If there is no detached screen session(no session yet, or all have been attach to other terminal), it creates a new screen session automatically. I use Windows server Remote Desktop a lot, screen -RR behaves almost the same when a client connects to a remote desktop server. It is natural and I like it. However, when screen -RR determines it should create a new session, it displays a message line at terminal bottom for 5 second. I'd like to suppress this message line because it brings us little benefit. In my opinion, a remote user can always easily distinguish whether he is connected to a resumed session(a piled-up display) or a newly created session(a clean display) from what he sees in the terminal window. So, is there a way to suppress the nag "New screen..." ? Just suppress that very one, not suppress message line globally. My env: opensuse 11.3, GNU screen 4.00.03 (FAU) 23-Oct-06

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  • My laptop screen keeps dimming

    - by Rowland
    I have a Cryo laptop with Windows 7 installed, bought in December 2011. Sometimes the screen seems to persistently dim and/or brighten up, even as I am doing things. In fact the brightness is varying even as I type this. The battery is always fully charged and connected to the mains. I have checked many times the battery/power-saving settings always leaving the settings the same way; full brightness and never dimming when on the mains. Yet when the screen starts playing up I can end up with the screen dimming and brightening almost continuously. I once went to the "adjust screen brightness" window when the screen had dimmed. I found the brightness slider on 100% (as I expected) but, as I dragged it to the left, to dim the screen, it first brightened and then started dimming, i.e. the screen setting said 100% brightness but it was only at, maybe 80%. I have checked with Cryo and they just say check the power settings. I know what these are and how to work them and always set them to never dim/full brightness, yet still my laptop starts this dimming every so often.

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  • Why does changing LCD screen resolution (Windows 7) take several seconds?

    - by Jakub P.
    Why does it take so long for a computer monitor to change resolution? Why does it take 2-3 seconds rather than, say, 50 ms? E.g. my current Windows 7 with strong GPU and 24 inch monitor takes 2-3 seconds. Why so long? I know some might say "it's JUST 2 seconds", but come on... Games produce hundreds of FPS, and monitors work at 60 Hz, so what is it that takes so much time? I remember this was the same in just about any machine I ever worked with.

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  • Xubuntu 14.04 resolution low

    - by user3203576
    I installed Xubuntu 14.04 amd64 on the computer at the computer repair shop where I work, but the screen resolution is way low, like 1024 x 768 (that wouldn't be low for a laptop or anything, but for a large desktop screen it is) I went to the display settings, but the resolution wouldn't go higher than that. When I installed Xubuntu 14.04 i386 at my computer at home, I didn't have any problems with the resolution. Any help? update: I ran lspci | grep VGA and got: 00:0d.0 VGA compatible controller: NVIDIA Corporation C61 [GeForce 6150SE nForce 430] (rev a2)

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  • Ubuntu won't display netbook's native resolution

    - by Daniel
    FYI: My Netbook model is HP Mini 210-1004sa, which comes with Intel Graphics Media Accelerator 3150, and has a display 10.1" Active Matrix Colour TFT 1024 x 600. I recently removed Windows 7 Starter from my netbook, and replaced it with Ubuntu 12.10. The problem is the OS doesn't seem to recognise the native display resolution of 1024x600 i.e. the bottom bits of Ubuntu is hidden beneath the screen & the only 2 available resolutions are: the default 1024x768 and 800x600. I've also thought about replacing Ubuntu with Lubuntu or Puppy Linux, as the system does run a bit slow, but I can't, as then I won't be able to access the taskbar and application menu which will be hidden beneath the screen. Only Ubuntu with Unity is currently usable, as the Unity Launcher is visible enough. I was able to define a custom resolution 1024x600 using the Q&A: How set my monitor resolution? but when I set that resolution, there appears a black band at the top of the screen and the desktop area is lowered, with bits of it hidden beneath the screen. I tried leaving it at this new resolution and restarting the system to see if the black band would disappear & the display will fit correctly, but it gets reset to 1024x768 at startup and displays following error: Could not apply the stored configuration for monitors none of the selected modes were compatible with the possible modes: Trying modes for CRTC 63 CRTC 63: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 0) CRTC 63: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 0) CRTC 63: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 0) CRTC 63: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 1) CRTC 63: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 1) CRTC 63: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 1) CRTC 63: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 1) Trying modes for CRTC 64 CRTC 64: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 1) CRTC 64: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 1) CRTC 64: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 1) CRTC 64: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 1)

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  • How can I fix broken i915 drivers for Intel GPUs?

    - by Alen Mujezinovic
    I've got troubles getting the i915 drivers to work correctly on my laptop (HP Pavilion DM4 2101ea). Specifically, the laptop screen goes black and stays black after the splash graphic when booting both from USB key and from harddrive. To get anything on to the display after the splash screen I have to boot either with acpi=off nomodeset i915.modeset=0 I'd rather not turn ACPI off because I like my fans spinning and nomodeset is a bit overkill, so for now I'm booting with i915.modeset=0. Unfortunately, this turns off KMS and my current maximum resolution on the laptop screen is fixed to 1024x768 instead of its real capability. When not setting any of the above boot flags and I plug in an external monitor, the external monitor works fine. When booting with the flags, the external monitor works fine too, but can only do 1024x768 and can't do anything else than mirroring the laptop display. I did upgrade the i915 drivers from 2.17 that ship with Precise to 2.19 which are the most recent ones but without luck of getting anything to display. Here's my lspci output: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5) 00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5) 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05) 01:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01) 02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5116 PCI Express Card Reader (rev 01) 08:00.0 Ethernet controller: Atheros Communications Inc. AR8151 v2.0 Gigabit Ethernet (rev c0) Here's lshw -C video *-display UNCLAIMED description: VGA compatible controller product: 2nd Generation Core Processor Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list configuration: latency=0 resources: memory:c0000000-c03fffff memory:b0000000-bfffffff ioport:4000(size=64) Both outputs are generated after booting with i915.modeset=0. Here's a complete Xorg.log file from a boot into a black screen: https://gist.github.com/479ce06454e47d6123e1 The graphics card is a Intel HD 3000 integrated GPU. I've never had problems with Intel hardware on Ubuntu before so this is very surprising. If you could provide a method to make i915 work, suggest alternative drivers a way to boot with i915.modeset=0 but higher resolutions and KMS on or explain what is happening and how to fix it I'll give you an answer badge. :) Thanks

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  • Ubuntu Linux won't display netbook's native resolution

    - by Daniel
    FYI: My Netbook model is HP Mini 210-1004sa, which comes with Intel Graphics Media Accelerator 3150, and has a display 10.1" Active Matrix Colour TFT 1024 x 600. I recently removed Windows 7 Starter from my netbook, and replaced it with Ubuntu 12.10. The problem is the OS doesn't seem to recognise the native display resolution of 1024x600 i.e. the bottom bits of Ubuntu is hidden beneath the screen & the only 2 available resolutions are: the default 1024x768 and 800x600. I've also thought about replacing Ubuntu with Lubuntu or Puppy Linux, as the system does run a bit slow, but I can't, as then I won't be able to access the taskbar and application menu which will be hidden beneath the screen. Only Ubuntu with Unity is currently usable, as the Unity Launcher is visible enough. I was able to define a custom resolution 1024x600 using the Q&A: How set my monitor resolution? but when I set that resolution, there appears a black band at the top of the screen and the desktop area is lowered, with bits of it hidden beneath the screen. I tried leaving it at this new resolution and restarting the system to see if the black band would disappear & the display will fit correctly, but it gets reset to 1024x768 at startup and displays following error: Could not apply the stored configuration for monitors none of the selected modes were compatible with the possible modes: Trying modes for CRTC 63 CRTC 63: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 0) CRTC 63: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 0) CRTC 63: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 0) CRTC 63: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 1) CRTC 63: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 1) CRTC 63: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 1) CRTC 63: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 1) Trying modes for CRTC 64 CRTC 64: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 0) CRTC 64: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 1) CRTC 64: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 1) CRTC 64: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 1) CRTC 64: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 1)

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  • Are there cloud network drives that let users lock files or mark them as "in use"?

    - by Brandon Craig Rhodes
    Having spent several hours reading about the features and limitations of services like DropBox and Jungle Disk and the hundreds of competitors they seem to have (as though everyone with an AWS account these days goes ahead and writes a file sharing application just for fun), I have yet to find one that would let a team of people at a small business collaborate without stepping all over each other's toes. At a small business there are often many small documents per project — estimates, contracts, project plans, budgets — and team members frequently have to open and edit them, with all sorts of problems happening if two people edit a file at once. Even if a sharing service is smart enough to keep both versions of the file created, most small-business software (like word processors, spreadsheets, estimating software, or billing systems) has no way to compare — much less to merge! — the changes in two rival versions of a file that two people edited at the same time without each other's knowledge. So, my question: are their cloud-based file sharing solutions that not only provide a virtual network drive that people can access, but that also let users lock files — even if it's not a real lock but just a flag or indicator — that could possibly prevent remote workers from both editing the same file at once? Having one person wait for another person to finish editing is a very, very small inconvenience compared to the hour or more than it can take to compare two estimates by hand until you find and resolve the rival changes. Given this fact, I am surprised that almost none of the popular file sharing solutions seem to recognize this problem and provide some solution! Does anyone know of a service that does?

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  • Are there cloud network drives that let users lock files or mark them as "in use"?

    - by Brandon Craig Rhodes
    Having spent several hours reading about the features and limitations of services like DropBox and Jungle Disk and the hundreds of competitors they seem to have (as though everyone with an AWS account these days goes ahead and writes a file sharing application just for fun), I have yet to find one that would let a team of people at a small business collaborate without stepping all over each other's toes. At a small business there are often many small documents per project — estimates, contracts, project plans, budgets — and team members frequently have to open and edit them, with all sorts of problems happening if two people edit a file at once. Even if a sharing service is smart enough to keep both versions of the file created, most small-business software (like word processors, spreadsheets, estimating software, or billing systems) has no way to compare — much less to merge! — the changes in two rival versions of a file that two people edited at the same time without each other's knowledge. So, my question: are their cloud-based file sharing solutions that not only provide a virtual network drive that people can access, but that also let users lock files — even if it's not a real lock but just a flag or indicator — that could possibly prevent remote workers from both editing the same file at once? Having one person wait for another person to finish editing is a very, very small inconvenience compared to the hour or more than it can take to compare two estimates by hand until you find and resolve the rival changes. Given this fact, I am surprised that almost none of the popular file sharing solutions seem to recognize this problem and provide some solution! Does anyone know of a service that does?

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  • network drive file sharing

    - by Linc
    For the better part of 10 years + we have relied on various network mapped drives to allow file sharing. One drive letter for sharing files between teams, a seperate file share for the entire organization, a third for personal use etc. I would like to move away from this and am trying to decide if an ECM/Sharepoint type solution, or home grown app, is worth the cost and the way to go? Or if we should simply remain relying on login scripts/mapped drives for file sharing due to its relative simplicity? Does anyone have any exeperience within their own organization or thoughts on this? Thanks.

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  • How to accommodate for the iPhone 4 screen resolution?

    - by dontWatchMyProfile
    This is a programming question! Read on before you vote to close! According to Apple, the iPhone 4 has a new and better screen resolution: 3.5-inch (diagonal) widescreen Multi-Touch display 960-by-640-pixel resolution at 326 ppi This little detail affects our apps in a heavy way. Most of the demo apps on the net have one thing in common: They position views in the believe that the screen has a fixed size of 320 x 480 pixels. So what most -if not all- developers do is: They designed everything in such a way, that a touchable area is -for example- 50 x 50 pixels big. Just enough to tap it. Things have been positioned relative to the upper left, to reach a specific position on screen - let's say the center, or somewhere at the bottom. Edit: It seems Apple has integrated an switch that allows to tell if an app is highRes or not. Nice. When we develop high-resolution apps, they probably won't work on older devices. And if they do, they would suffer a lot from 4-times the size of any image, having to scale them down in memory.

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  • addthis sharing buttons adblocker workaround

    - by Manuel
    I just integrated the addthis sharing buttons into my website. I'd like to use the addthis buttons in reason of their tracking and reporting functionality. However they are blocked by adblock plus and other adblockers. Considering that nowaday 30% of internet users use an adblocker I thought of making a work around for those. I integrated manual sharing buttons into my website. So far so good. Do you have any idea on how to hide my manual sharing buttons if the addthis buttons are shown. Or better said, don't hide them if the addthis buttons are removed by a addblocker? Is it possible to detect an adblocker through js? thx, I really appreciate your help!

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  • skip asking for allow info sharing in openid

    - by hd
    i am using php-openid library. i request email address from providers(Yahoo! and Google) to return back to me to check in my tables. when the user enters user and password to get authenticated with Yahoo! or Google,the provider asks user to allow sharing info. some think like this: Click "Agree" to sign in to mysite.com using your Yahoo! ID and allow sharing of Yahoo! info. You are sharing the following: [email protected] is it possible to skip this step?

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  • Problems implementing a screen space shadow ray tracing shader

    - by Grieverheart
    Here I previously asked for the possibility of ray tracing shadows in screen space in a deferred shader. Several problems were pointed out. One of the most important problem is that only visible objects can cast shadows and objects between the camera and the shadow caster can interfere. Still I thought it'd be a fun experiment. The idea is to calculate the view coordinates of pixels and cast a ray to the light. The ray is then traced pixel by pixel to the light and its depth is compared with the depth at the pixel. If a pixel is in front of the ray, a shadow is casted at the original pixel. At first I thought that I could use the DDA algorithm in 2D to calculate the distance 't' (in p = o + t d, where o origin, d direction) to the next pixel and use it in the 3D ray equation to find the ray's z coordinate at that pixel's position. For the 2D ray, I would use the projected and biased 3D ray direction and origin. The idea was that 't' would be the same in both 2D and 3D equations. Unfortunately, this is not the case since the projection matrix is 4D. Thus, some tweak needs to be done to make this work this way. I would like to ask if someone knows of a way to do what I described above, i.e. from a 2D ray in texture coordinate space to get the 3D ray in screen space. I did implement a simple version of the idea which you can see in the following video: video here Shadows may seem a bit pixelated, but that's mostly because of the size of the step in 't' I chose. And here is the shader: #version 330 core uniform sampler2D DepthMap; uniform vec2 projAB; uniform mat4 projectionMatrix; const vec3 light_p = vec3(-30.0, 30.0, -10.0); noperspective in vec2 pass_TexCoord; smooth in vec3 viewRay; layout(location = 0) out float out_AO; vec3 CalcPosition(void){ float depth = texture(DepthMap, pass_TexCoord).r; float linearDepth = projAB.y / (depth - projAB.x); vec3 ray = normalize(viewRay); ray = ray / ray.z; return linearDepth * ray; } void main(void){ vec3 origin = CalcPosition(); if(origin.z < -60) discard; vec2 pixOrigin = pass_TexCoord; //tex coords vec3 dir = normalize(light_p - origin); vec2 texel_size = vec2(1.0 / 600.0); float t = 0.1; ivec2 pixIndex = ivec2(pixOrigin / texel_size); out_AO = 1.0; while(true){ vec3 ray = origin + t * dir; vec4 temp = projectionMatrix * vec4(ray, 1.0); vec2 texCoord = (temp.xy / temp.w) * 0.5 + 0.5; ivec2 newIndex = ivec2(texCoord / texel_size); if(newIndex != pixIndex){ float depth = texture(DepthMap, texCoord).r; float linearDepth = projAB.y / (depth - projAB.x); if(linearDepth > ray.z + 0.1){ out_AO = 0.2; break; } pixIndex = newIndex; } t += 0.5; if(texCoord.x < 0 || texCoord.x > 1.0 || texCoord.y < 0 || texCoord.y > 1.0) break; } } As you can see, here I just increment 't' by some arbitrary factor, calculate the 3D ray and project it to get the pixel coordinates, which is not really optimal. Hopefully, I would like to optimize the code as much as possible and compare it with shadow mapping and how it scales with the number of lights. PS: Keep in mind that I reconstruct position from depth by interpolating rays through a full screen quad.

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