belaf
March 2, 2021, 12:48pm
1
Is it possible to use postprocess vignette effect only on a texture?
I mapped out a texture to a mesh, and i want to feather the textures edges.
Thanks in advance!
Welcome aboard!
No, the vignette image processing effect applies as a post process to the whole screen.
However, I guess you could take the vignette code from the existing shader and use it in your own shader material:
#ifdef VIGNETTE
//vignette
vec2 viewportXY = gl_FragCoord.xy * vInverseScreenSize;
viewportXY = viewportXY * 2.0 - 1.0;
vec3 vignetteXY1 = vec3(viewportXY * vignetteSettings1.xy + vignetteSettings1.zw, 1.0);
float vignetteTerm = dot(vignetteXY1, vignetteXY1);
float vignette = pow(vignetteTerm, vignetteSettings2.w);
// Interpolate between the artist 'color' and white based on the physical transmission value 'vignette'.
vec3 vignetteColor = vignetteSettings2.rgb;
#ifdef VIGNETTEBLENDMODEMULTIPLY
vec3 vignetteColorMultiplier = mix(vignetteColor, vec3(1, 1, 1), vignette);
result.rgb *= vignetteColorMultiplier;
#endif
#ifdef VIGNETTEBLENDMODEOPAQUE
result.rgb = mix(vignetteColor, result.rgb, vignette);
#endif
#endif
Pryme8
March 2, 2021, 8:25pm
3
3 Likes