Premultiply alpha for transparent tile sources

2021-07-26 16:54:49 +02:00
parent 976f1b694a
commit fd43b00118
1 changed files with 3 additions and 1 deletions
--- a/src/ol/layer/WebGLTile.js
+++ b/src/ol/layer/WebGLTile.js
@@ -224,7 +224,9 @@ function parseStyle(style, bandCount) {
        discard;
      }

-      gl_FragColor = color * ${Uniforms.TRANSITION_ALPHA};
+      gl_FragColor = color;
+      gl_FragColor.rgb *= gl_FragColor.a;
+      gl_FragColor *= ${Uniforms.TRANSITION_ALPHA};
    }`;

  return {