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20 lines
459 B
GLSL
20 lines
459 B
GLSL
//
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// Simple passthrough fragment shader
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//
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varying vec2 v_vTexcoord;
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varying vec4 v_vColour;
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uniform float angle;
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uniform float amount;
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void main() {
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vec2 c = v_vTexcoord - vec2(0.5);
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float _x = .5 + c.x * cos(angle) - c.y * sin(angle);
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float _y = .5 + c.x * sin(angle) + c.y * cos(angle);
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float _a = 1. / amount;
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if(mod(floor(_x / _a) + floor(_y / _a), 2.) > 0.5)
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gl_FragColor = vec4(vec3(0.), 1.);
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else
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gl_FragColor = vec4(vec3(1.), 1.);
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}
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