HTML5 draw_getpixel with html5?

[duran can]

Hi,
draw_getpixel(mouse_x,mouse_y); is working very well on windows but not working on html5, how can i use?


*using v2.3.1.542 on steam

anyting?

 

[matharoo]

What issue are you getting? Is it returning the wrong color or is it returning nothing?

Can you show your code?

 

[duran can]

What issue are you getting? Is it returning the wrong color or is it returning nothing?

Can you show your code?

code is simply getting pixel, no errors. if webgl is not activated getting 0 value, if webgl is activated getting wrong color value (like on image)

draw_set_color(draw_getpixel(mouse_x,mouse_y));
draw_text(mouse_x,mouse_y-32,draw_getpixel(mouse_x,mouse_y));
draw_set_color(c_white);

 

[duran can]

You can test here: https://rengaver.com/html5test/index.html

 

[matharoo]

What if you used device_mouse_x or device_mouse_x_to_gui instead of mouse_x? There's also device_mouse_raw_x so you can try that.

 

[duran can]

What if you used device_mouse_x or device_mouse_x_to_gui instead of mouse_x? There's also device_mouse_raw_x so you can try that.

still not working did you on html5 try? i dont think this problem about mouse coordinates.. couz of writing draw_text on same coordinate.


getting wrong color on this code:

var xx=device_mouse_x_to_gui(0);
var yy=device_mouse_y_to_gui(0);
draw_set_color(draw_getpixel(xx,yy));
draw_text(xx,yy-32,draw_getpixel(xx,yy));
draw_set_color(c_white);

and this code:

var xx=device_mouse_raw_x(0);
var yy=device_mouse_raw_y(0);
draw_set_color(draw_getpixel(xx,yy));
draw_text(xx,yy-32,draw_getpixel(xx,yy));
draw_set_color(c_white);

 

[Padouk]

AHoy @duran can

I remember a similar issue couple of years ago in one of my project. I wasn't using GMS at that time so this answer is a shot in the dark
Quoting: https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/readPixels

xA GLint specifying the first horizontal pixel that is read from the lower left corner of a rectangular block of pixels.

I know this is silly, but try using (browser_height - yy) or something similar to inverse it top down / bottom up

 

[duran can]

AHoy @duran can

I remember a similar issue couple of years ago in one of my project. I wasn't using GMS at that time so this answer is a shot in the dark
Quoting: https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/readPixels


I know this is silly, but try using (browser_height - yy) or something similar to inverse it top down / bottom up

thank you very much! its solved with room_height-yy

 

[rytan451]

thank you very much! its solved with room_height-yy

This looks like a bug. You should report this to the helpdesk.