Homebrew Problems writing to the screen buffers

[pimathbrainiac]

I'm having a little bit of trouble with writing to the screen buffers right now. I made a program that has the purpose of setting a pixel at the (0,0) coordinate (adjusted so (0,0) is actually top left).

Here's my code: http://pastebin.com/ibkqTnLi

The code compiles fine (duh), but when I run it in Citra, an error about OpenGL rendering (yeah, I know this error is on Citra's side), then the emulator screen pops up blank. I believe that the problem is with my code because I'm able to run the 24bit-color example just fine in Citra.

Thanks for the help in advance!

 

[gudenau]

The template in examples sets a pixel, try that.

 

[julian20]

I tested your code on my 2ds. I got a red pixel on the top screen bottom-left. Wait i send a picture

 

[pimathbrainiac]

I tested your code on my 2ds. I got a red pixel on the top screen bottom-left. Wait i send a picture

Thanks for that. I just rechecked in Citra, and it is indeed in the bottom left. I was just looking in the wrong place XD

 

[julian20]

Here is a picture
EDIT: sry doesnt checked that you posted a message

 

[marc00077]

I assume you know why the red dot appears on BL instead of TL... (Framebuffer is sideways)

 

[pimathbrainiac]

Actually the problem was in my conversion of coordinates I forgot about zero indexing and did height-y instead of height-1-y

The pixel showed in x=1, which was my hint to how to fix it