Display output visual filter
I would like to be embed a filter in the video output such that pixels are slightly rearranged. Specifically, I’m after a retro pincushion effect ([ ] -＞ ( )). I need it to be active even in the console/boot sequence, thus X11 mods are out.
I realise this is not an easy task, and that I may end up having to modify the DRM or V4L driver (or if nothing else, the fb device) in order to achieve this. That’s something I would be willing to do if it came to that. Note that it's not necessary to have it working on a desktop environment.
I did ask this in the Raspberry Pi channel, but I guess this relates more to the core of Linux than Pi hacks.
linux v4l drm
asked 4 mins ago
WarpspaceWarpspace
1011
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I would like to be embed a filter in the video output such that pixels are slightly rearranged. Specifically, I’m after a retro pincushion effect ([ ] -＞ ( )). I need it to be active even in the console/boot sequence, thus X11 mods are out.
I realise this is not an easy task, and that I may end up having to modify the DRM or V4L driver (or if nothing else, the fb device) in order to achieve this. That’s something I would be willing to do if it came to that. Note that it's not necessary to have it working on a desktop environment.
I did ask this in the Raspberry Pi channel, but I guess this relates more to the core of Linux than Pi hacks.
linux v4l drm
asked 4 mins ago
WarpspaceWarpspace
1011
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I would like to be embed a filter in the video output such that pixels are slightly rearranged. Specifically, I’m after a retro pincushion effect ([ ] -＞ ( )). I need it to be active even in the console/boot sequence, thus X11 mods are out.
I realise this is not an easy task, and that I may end up having to modify the DRM or V4L driver (or if nothing else, the fb device) in order to achieve this. That’s something I would be willing to do if it came to that. Note that it's not necessary to have it working on a desktop environment.
I did ask this in the Raspberry Pi channel, but I guess this relates more to the core of Linux than Pi hacks.
linux v4l drm
asked 4 mins ago
WarpspaceWarpspace
1011
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I would like to be embed a filter in the video output such that pixels are slightly rearranged. Specifically, I’m after a retro pincushion effect ([ ] -＞ ( )). I need it to be active even in the console/boot sequence, thus X11 mods are out.
I realise this is not an easy task, and that I may end up having to modify the DRM or V4L driver (or if nothing else, the fb device) in order to achieve this. That’s something I would be willing to do if it came to that. Note that it's not necessary to have it working on a desktop environment.
I did ask this in the Raspberry Pi channel, but I guess this relates more to the core of Linux than Pi hacks.
linux v4l drm
linux v4l drm
asked 4 mins ago
WarpspaceWarpspace
1011
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 mins ago
WarpspaceWarpspace
1011
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 mins ago
WarpspaceWarpspace
1011
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 mins ago
WarpspaceWarpspace
1011
asked 4 mins ago
WarpspaceWarpspace
1011
1011
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Warpspace is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Warpspace is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f510187%2fdisplay-output-visual-filter%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Warpspace is a new contributor. Be nice, and check out our Code of Conduct.
Warpspace is a new contributor. Be nice, and check out our Code of Conduct.
Warpspace is a new contributor. Be nice, and check out our Code of Conduct.
Warpspace is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f510187%2fdisplay-output-visual-filter%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
