three-shaders
Version:
three-shaders - a library of shaders included with Three.js library
53 lines (32 loc) • 890 B
JavaScript
/**
* @author flimshaw / http://charliehoey.com
*
* Technicolor Shader
* Simulates the look of the two-strip technicolor process popular in early 20th century films.
* More historical info here: http://www.widescreenmuseum.com/oldcolor/technicolor1.htm
* Demo here: http://charliehoey.com/technicolor_shader/shader_test.html
*/
function TechnicolorShader() {
return {
uniforms: {
tDiffuse: { value: null }
},
vertexShader: `
varying vec2 vUv;
void main() {
vUv = uv;
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
}
`,
fragmentShader: `
uniform sampler2D tDiffuse;
varying vec2 vUv;
void main() {
vec4 tex = texture2D( tDiffuse, vec2( vUv.x, vUv.y ) );
vec4 newTex = vec4(tex.r, (tex.g + tex.b) * .5, (tex.g + tex.b) * .5, 1.0);
gl_FragColor = newTex;
}
`
}
};
module.exports = TechnicolorShader;