normal blend [Solved]

[YeahYeah11]

Hi, i have this problem that i tried to solve all day and i cant, the thing is i want to add an image to a surface, but
the problem is that the alpha of the pixels overwrite the others so the images have holes.
So i created a shader and try to blend this images in this way and i failed, the i look all over internet and tryed many diferents formulas but i just cant blend the images properly. So can anyone help me here? Thanks!

 

[flyingsaucerinvasion]

check this out:

https://forum.yoyogames.com/index.p...results-than-equivalent-draw-step-code.54187/

 

[YeahYeah11]

Wow the solution was so easy, THANKS!!

wait i have just readed this:

WARNING!: Not all blend modes are available on all platforms. Android, iOS, and HTML5 without WebGL enabled will not be able to display the following modes correctly:

• bm_src_colour
• bm_inv_src_colour
• bm_dest_colour
• bm_inv_dest_colour
• bm_src_alpha_sat

and i need this game to run on mobile, does
bm_inv_src_alpha maybe cause problems too?

 

[flyingsaucerinvasion]

none of those constants are used with pre-multiplied alpha

 

[YeahYeah11]

ok thanks, now everything is working Fine!