fabric
Version:
Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.
16 lines (15 loc) • 431 B
text/typescript
export const fragmentSource = `
precision highp float;
uniform sampler2D uTexture;
uniform vec3 uGamma;
varying vec2 vTexCoord;
void main() {
vec4 color = texture2D(uTexture, vTexCoord);
vec3 correction = (1.0 / uGamma);
color.r = pow(color.r, correction.r);
color.g = pow(color.g, correction.g);
color.b = pow(color.b, correction.b);
gl_FragColor = color;
gl_FragColor.rgb *= color.a;
}
`;