glsl matrix scale/translation thingo

result_should_look_like_this.txt

0110
1111
0110

scaleTranslate.glsl

vec3 u= vec3(-0.25,-0.25,1.0);
vec3 v= vec3(0.25,0.25,1.0);
vec3 vu = v-u;

mat3 aMat3 = mat3(1.0/vu.x, 0.0, 0.0, 
                  0.0, 1.0/vu.y, 0.0, 
                  -1.0*u.x/vu.x, -1.0*u.y/vu.y, 1.0);


void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
	vec2 _uv = fragCoord.xy / iResolution.xy;
	
    vec3 uv3 = vec3( _uv, 1.0);

    vec3 normCoord = uv3 - u;
    
    if (normCoord.x<0.0)
        normCoord.x = normCoord.x + 1.0;
    if (normCoord.x>1.0)
        normCoord.x = normCoord.x - 1.0;

    if (normCoord.y<0.0)
        normCoord.y = normCoord.y + 1.0;
    if (normCoord.y>1.0)
        normCoord.y = normCoord.y - 1.0;
    
    normCoord.x = normCoord.x/vu.x;
    normCoord.y = normCoord.y/vu.y;
    
    
	if (normCoord.x<0.|| normCoord.y<0. || normCoord.x>1.0 || normCoord.y>1.0)
		fragColor = vec4(1.0, 1.0, 1.0, 1.0);
    else
		fragColor = vec4(normCoord.x, normCoord.y, 0.0, 1.0);
}