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24 lines
513 B
GLSL
24 lines
513 B
GLSL
#ifdef GL_ES
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precision mediump float;
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#endif
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uniform vec2 u_resolution;
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uniform vec2 u_mouse;
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uniform float u_time;
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#define PI 3.14159265359
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void main() {
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vec2 st = gl_FragCoord.xy/u_resolution;
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vec3 color = vec3(0.0,0.0,0.0);
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float alpha = 1.0;
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float dev = .25;
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// the card itself has another way to do this, instead of 1.0-st.x+st.y it uses .5+(st.x-st.y)*.5
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// which i like more
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color += step(.45, (1.0-st.x+st.y)*.5)-step(.55, (1.0-st.x+st.y)*.5);
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gl_FragColor = vec4(color, alpha);
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}
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