Messages

1

Graphics / Re: Blur shader not working - Just a grey "cross"

« on: April 19, 2016, 12:18:07 pm »

I tried to set 0.5 as the blur_radius now. It changes something, but it still isn't a blur. It kinda copies the texture for times, makes them gray and half transparent (See screenshot below).

(click to show/hide)

EDIT: I tried 0.01 now and it seems to work. Still curious why it looks so strange with a bigger radius...

2

Graphics / Blur shader not working - Just a grey "cross"

« on: April 18, 2016, 03:58:34 pm »

Hi,

I'm trying to apply a blur shader on one of my sprites. But all I get is the texture with a half transparent grey cross layed over it (See  screenshot below). Can someone tell me what I have done wrong?

This is my code that draws the sprite:

shader.setParameter("blur_radius", 20);
shader.setParameter("texture", backgroundTexture);

window.clear(sf::Color::Transparent);
window.draw(backgroundSprite, &shader);
window.display();

And this is my shader:

uniform sampler2D texture;
uniform float blur_radius;

void main()
{
    vec2 offx = vec2(blur_radius, 0.0);
    vec2 offy = vec2(0.0, blur_radius);

    vec4 pixel = texture2D(texture, gl_TexCoord[0].xy)               * 4.0 +
                 texture2D(texture, gl_TexCoord[0].xy - offx)        * 2.0 +
                 texture2D(texture, gl_TexCoord[0].xy + offx)        * 2.0 +
                 texture2D(texture, gl_TexCoord[0].xy - offy)        * 2.0 +
                 texture2D(texture, gl_TexCoord[0].xy + offy)        * 2.0 +
                 texture2D(texture, gl_TexCoord[0].xy - offx - offy) * 1.0 +
                 texture2D(texture, gl_TexCoord[0].xy - offx + offy) * 1.0 +
                 texture2D(texture, gl_TexCoord[0].xy + offx - offy) * 1.0 +
                 texture2D(texture, gl_TexCoord[0].xy + offx + offy) * 1.0;

    gl_FragColor =  gl_Color * (pixel / 16.0);
}

The shader is loaded correctly and shaders are supported on my computer.

And here is the screenshot of the sprite (As you can see, there is no blur):

(click to show/hide)

Thanks,
StuntHacks

3

Graphics / Re: Layer distance

« on: March 16, 2015, 09:40:37 pm »

Yeah, worked. I think, this is solved now.

4

Graphics / Layer distance

« on: March 15, 2015, 09:26:11 pm »

I hope this is the right place for this, if not: sorry ^^'

So, I want to have this effect with multiple layers of graphics: At the beginning the first layer should be displayed in it's default size and the second one should be displayed a bit smaller so that it looks like there is some distance between the layers. Then, if the users triggers an event or presses a button or something, the view should zoom into the screen so that layer two is displayed in it's original size and layer one is displayed a bit bigger. How could I solve this efficiently and, if possible, with views and without rescaling the layers?

Thanks in advice
 ~ StuntHacks