LayoutTests/css3/filters/resources/custom-filter-clamp-css-color-matrix-negative.fs

precision mediump float;

void main(void)
{
    css_ColorMatrix = mat4(-10.0, 0.0, 0.0, 0.0,
                           0.0, -10.0, 0.0, 0.0,
                           0.0, 0.0, -10.0, 0.0,
                           0.0, 0.0, 0.0, 1.0);
    css_MixColor = vec4(-0.5, -0.5, -0.5, 1.0);
}