Gigatron's Profile

- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 3 Jan, 2017
- Quote
Prominent
Yes i understand ... i must move texture inside quad(Vtex) to do what you want.. added for my todo list...
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 1 Jan, 2017
- Quote
Follder22 sorry i dropped this projet.. the reason is collision and slow frame rate when you mix C2 with treejs with more object it's not interesting and become harder for most C2 user to build 3d world ...
However i am waiting Construct3 ... be patient like me

Regards

Gigatron
- Joined 8 Jan, 2012
- 150 topics • 948 posts
1

1 Jan, 2017
Quote

Prominent

Please try this code , it must working in this case ...

Good luck ;

/////////////////////////////////////////////////////////
// Pixellate effect
#ifdef GL_ES
precision mediump float;
#endif
 
varying mediump vec2 vTex;
uniform mediump sampler2D samplerFront;
uniform mediump float pixelWidth;
uniform mediump float pixelHeight;
 
vec2 iResolution = vec2( 1./pixelWidth, 1./pixelHeight);

#define PIXEL_SIZE 32.0

void main()  {
	vec2 uv = vTex;
    
    float plx = pixelWidth * PIXEL_SIZE  ;
    float ply = pixelHeight * PIXEL_SIZE  ;
    
    float xx = plx * (PIXEL_SIZE / iResolution.x);
    float yy = ply * (PIXEL_SIZE/ iResolution.y);
    
    uv.x = xx * floor(uv.x / xx);
    uv.y = yy * floor(uv.y / yy);
    
    gl_FragColor = texture2D(samplerFront, uv);
}[/code:803mkk8a]

*****
If it's work for you then you can replace : 
#define PIXEL_SIZE 32.0    with :    uniform float PIXEL_SIZE    to acces this variable from .xml file and C2 editor

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- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 1 Jan, 2017
- Quote
Prominent
Can you send .capx with the problem .. then i can look what's wrong .
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 29 Dec, 2016
- Quote
adcornaglia
Thank you ... just registered there
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 27 Dec, 2016
- Quote
You are all nice .. thank you and happy holidays to all..
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 25 Dec, 2016
- Quote
I have allready fixed this.. and sent by pm...
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 22 Dec, 2016
- Quote
jance0405
http://gigatron3k.free.fr/html5/C2/FX/fworks.rar
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 13 Dec, 2016
- Quote
> digitalsoapbox

> Ok .. percent instead of float in xml file ;

> http://gigatron3k.free.fr/html5/C2/FX/opacity.rar

>

Thanks. Is Opacity from 0 to 1 or 0-100? The default value is 1 but in your example .capx it's set to 100, so I just want to make sure.

In fact the value is between 0-1 but the display is multiplied by 100... this is why we use percent instead of float.

Opacity in display is 0-100 , yes.
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 13 Dec, 2016
- Quote
digitalsoapbox
Ok .. percent instead of float in xml file ;

http://gigatron3k.free.fr/html5/C2/FX/opacity.rar
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 13 Dec, 2016
- Quote
Gigatron
Just noticed it seems to be ignoring the sprite's alpha channel - try your demo against a blue background.

I forgot something sure , alpha channel ... but try to download again please ...
- Gigatron
- - Joined 8 Jan, 2012
  - 150 topics • 948 posts
- 1
- 13 Dec, 2016
- Quote
adcornaglia
1- documentation-on-built-in-uniforms_t115900

2- glslsandbox.com

3- shadertoy.com <--- my lab

4- a bit knowledge programming C# ...

Glsl fragment shader mean drawing with mathematics ... exactly like pencil, brush, circle rectangle tools on Paintnet, paint etc ...

Imagine screen filled 60 time per seconds 800*600 pixel *60 ... The gpu doing that .. filling the screen with million pixels.

https://www.scirra.com/tutorials/4900/shader-toy-to-c2