By default, webgl treats colors as premultiplied. here the "icon" image is not premultiplied. So you have to add the line gl_FragColor.rgb *= gl_FragColor.a if we don't, here is the result, note the white limit at the intersections of the icons
if we add this line, we see a better result :
void main() { gl_FragColor = texture2D(spriteTexture, gl_PointCoord); gl_FragColor.rgb *= gl_FragColor.a; }
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By default, webgl treats colors as premultiplied.
here the "icon" image is not premultiplied. So you have to add the line
gl_FragColor.rgb *= gl_FragColor.a
if we don't, here is the result, note the white limit at the intersections of the icons
if we add this line, we see a better result :
void main() {
gl_FragColor = texture2D(spriteTexture, gl_PointCoord);
gl_FragColor.rgb *= gl_FragColor.a;
}