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- #version 120
- uniform sampler2D slideTexture;
- varying vec2 v_texturePosition;
- varying vec3 v_normal;
- void main() {
- vec3 lightVector = vec3(0.0, 0.0, 1.0);
- float light = max(dot(lightVector, v_normal), 0.0);
- vec4 fragment = texture2D(slideTexture, v_texturePosition);
- vec4 black = vec4(0.0, 0.0, 0.0, fragment.a);
- gl_FragColor = mix(black, fragment, light);
- }
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