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Help => Graphics => Topic started by: kaB00M on August 27, 2012, 01:00:16 pm

Title: Failed to compile fragment shader
Post by: kaB00M on August 27, 2012, 01:00:16 pm

Im getting this error:

Quote

Failed to compile fragment shader:
Sytax error: 'texture' parse error

texture framebuffer
float offset

effect
{
        vec2 offx = vec2(offset, 0.0);
        vec2 offy = vec2(0.0, offset);

        vec4 c0 = framebuffer(_in);
        vec4 c1 = framebuffer(_in - offy);
        vec4 c2 = framebuffer(_in + offy);
        vec4 c3 = framebuffer(_in - offx);
        vec4 c4 = framebuffer(_in + offx);

        _out = c0 * 0.2 + c1 * 0.2 + c2 * 0.2 + c3 * 0.2 + c4 * 0.2;
}
 

This worked fine in 1.6  ???
Thank you

Title: Re: Failed to compile fragment shader
Post by: eXpl0it3r on August 27, 2012, 01:11:25 pm

Well SFML 1.6 isn't SFML 2, but I don't have that much knowledge on shaders, but you could take a look at the shader example (https://github.com/SFML/SFML/tree/master/examples/shader) that comes with SFML 2.

Title: Re: Failed to compile fragment shader
Post by: kaB00M on August 27, 2012, 06:28:47 pm

This one works, as an example!

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);
}
 

Thank you once again.

Title: Re: Failed to compile fragment shader
Post by: Laurent on August 27, 2012, 08:25:37 pm

SFML 2 uses pure GLSL syntax (as stated in the doc), there's no more syntactic shortcut.