I am working on Roku application and sending static images to Roku for display of weather info.If this.content.WeatherImagePath <> Invalid this.bitmaps[this.content.WeatherImagePath] = { request: Invalid, tries: 1, bitmap: CreateObject("roBitmap", this.content.WeatherImagePath), done: True } End IfI am using this images to display:But I getting color of sun in Blue. for details of images (http://stackoverflow.com/questions/42413659/roku-sometime-changes-the-color-of-static-images) Memory detail is:Available memory 14927808 used 24072192 max 39000000What can be issue ?

"RokuKC" wrote:"usman_itsrelevant" wrote:I am working on Roku application and sending static images to Roku for display of weather infoCan you provide the specific image file being used, e.g. by giving a link to the file on your webserver or public dropbox?Then, on what Roku model(s) do you see the problem? If you can provide the Model info from the Settings / System / About that will help.In topic i have added an image and link is also there for output images.I am facing this issue on almost all models.But sometimes roku displays images as it should means color of sun is yellow. but sometimes color of sun is bule.

"EnTerr" wrote:What API are you using (e.g. roScreen, roImageCanvas, roSgScreen/RSG)?It will help if you share specific model number (e.g. 3600x, 2700x...) and firmware version where you "get the blues".Also, i am not sure that imgur (what you use for to share the image) doesn't mangle the image even a little and that might be significant, e.g. i see it's a png with alpha.I have updated code and I am getting this issue on almost all devices of Roku.(Roku_express, Roku2 XD model#3050X). But sometimes I do not get any issue and then this issue starts occur again

"squirreltown" wrote:I looked at stackoverflow and I didn't see an image of this graphic displaying correctly, the ones that were yellow were different graphics. Obviously it shows correctly here. I don't see a reason but it does appear that the white/grey of the clouds is correct which rules out any bizarre channel swapping in the file or the Roku. Have you tried starting with a fresh graphic and pasting the layer in?On stackoverflow, I posted two results of same code on same device, means that color of only sun changes from Yellow to Blue and there is no issue with white or grey clouds. And sometimes roku displays sun images correct(Yellow).

"squirreltown" wrote:"EnTerr" wrote:"squirreltown" wrote:Exactly! I did check the inverse and it's a considerably darker shade that what's showing. can alfalpha channel affect that?I think the alfalpha channel is normally for knocking out any photo-bombing cows, so I don't see a connection just yet. Really, the only clue I can find is that if you rotate the hue 180º you get the result shown in the stackoverflow photos. That seems like something, being exactly 180 instead of some arbitrary amount.screen = CreateObject("roBitmap", {width: 1280, height: 720, AlphaEnable: True})[size=100][color=#000000][font=Arial, sans-serif]src = this.bitmaps[this.content.forecasts[i].imgURL].bitmap[/font][/color][/size]DrawObject(x as Integer, y as Integer, src as Object) screen.DrawObject(Int(112 + (174 * i) - 75), 250, src)Above code I am using to display an image. What I have to change to resolve issue?RokuMarkn! Link in your answer does not works.

I am also getting issue on all images which have yellow color and ROKU display the color blue.

Change in color of static image on ROKU

15 Replies

RokuMarkn
Visitor
9 years ago
"squirreltown" wrote:
it does appear that the white/grey of the clouds is correct which rules out any bizarre channel swapping in the file or the Roku.

Well, yellow is the inverse of blue if you subtract each component from 255 (yellow = ffff00, blue = 0000ff), while gray is approximately a self inverse if it's close to 808080. White is harder to explain, that should change to black under this theory.

Or it could have something to do with the last verse of Scarlet Begonias. 🙂

--Mark
squirreltown
Roku Guru
9 years ago
"RokuMarkn" wrote:

Well, yellow is the inverse of blue if you subtract each component from 255 (yellow = ffff00, blue = 0000ff), while gray is approximately a self inverse if it's close to 808080. White is harder to explain, that should change to black under this theory.

Or it could have something to do with the last verse of Scarlet Begonias. 🙂

--Mark

Exactly! I did check the inverse and it's a considerably darker shade that what's showing.
EnTerr
Roku Guru
9 years ago
"squirreltown" wrote:
Exactly! I did check the inverse and it's a considerably darker shade that what's showing.

can alfalpha channel affect that?
squirreltown
Roku Guru
9 years ago
"EnTerr" wrote:
"squirreltown" wrote:
Exactly! I did check the inverse and it's a considerably darker shade that what's showing.

can alfalpha channel affect that?

I think the alfalpha channel is normally for knocking out any photo-bombing cows, so I don't see a connection just yet. Really, the only clue I can find is that if you rotate the hue 180º you get the result shown in the stackoverflow photos. That seems like something, being exactly 180 instead of some arbitrary amount.
EnTerr
Roku Guru
9 years ago
Does setAlphaEnable() and GL_ONE_MINUS_SRC_ALPHA relate?

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Change in color of static image on ROKU

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