Skip to content

Selective Bloom Example: Add bloomStrength uniform to enhance bloom effect control #32125

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 3 commits into from
Oct 28, 2025
+6 −2
Merged

Selective Bloom Example: Add bloomStrength uniform to enhance bloom effect control #32125

Changes from 2 commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
0184f34
Add bloomStrength uniform to enhance bloom effect control
querielo Oct 27, 2025
baa59cf
Minor fix
querielo Oct 27, 2025
bc55193
Review comment: https://github.com/mrdoob/three.js/pull/32125#discuss…
querielo Oct 27, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 7 additions & 2 deletions examples/webgl_postprocessing_unreal_bloom_selective.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -30,12 +30,13 @@

uniform sampler2D baseTexture;
uniform sampler2D bloomTexture;
uniform float bloomStrength;

varying vec2 vUv;

void main() {

gl_FragColor = ( texture2D( baseTexture, vUv ) + vec4( 1.0 ) * texture2D( bloomTexture, vUv ) );
gl_FragColor = ( texture2D( baseTexture, vUv ) + texture2D( bloomTexture, vUv ) * bloomStrength );

}

Expand Down Expand Up @@ -116,7 +117,8 @@
new THREE.ShaderMaterial( {
uniforms: {
baseTexture: { value: null },
bloomTexture: { value: bloomComposer.renderTarget2.texture }
bloomTexture: { value: bloomComposer.renderTarget2.texture },
bloomStrength: { value: params.strength }
},
vertexShader: document.getElementById( 'vertexshader' ).textContent,
fragmentShader: document.getElementById( 'fragmentshader' ).textContent,
Expand Down Expand Up @@ -153,6 +155,9 @@
bloomFolder.add( params, 'strength', 0.0, 3 ).onChange( function ( value ) {

bloomPass.strength = Number( value );
// Pass strength also to the mix shader so the final composite intensity matches
mixPass && mixPass.material && mixPass.material.uniforms && mixPass.material.uniforms.bloomStrength && ( mixPass.material.uniforms.bloomStrength.value = Number( value ) );

render();

} );
Expand Down