What are the steps to create a stunning motion blur shader effect?

Question

What are the steps to create a stunning motion blur shader effect?

I attempted to replicate the snow effect seen on the bottom page of this URL . Everything else is functioning correctly, but I am struggling to achieve the motion blur effect. Any suggestions?

The texture sprite used to create the motion blur effect

https://i.sstatic.net/33ZbC.png

Below is the code snippet:

(function(global) {
      
        var img = 'https://i.imgur.com/hlmsgWA.png'

        // Rest of the JavaScript code goes here...

       })(window)

// Vertex and Fragment shader code snippets go here...

.

javascript three.js glsl webgl shader

Answer 1

Answer №1

When working with snippet code, it's important to note that the variable speed is treated differently in the update loop compared to the vertex shader.

For updating:

uniforms.u_time.value += conf.speed * 0.003

When using the shader:

float prevRatio = mod(u_time - u_speed - indexRatio * 3.0, thershold);

To achieve the desired outcome, consider changing u_speed to u_speed * 0.003 in the shader code (or preferably handle this multiplication in the JavaScript definition).

A quick way to debug such issues is by passing your values to the output color and verifying if it aligns with your expectations.

==================

If someone is interested in creating tails with non-flat curvature, they can retain the last N points of each particle path. This allows for complete computation of trail mesh geometry on the CPU before streaming it to the GPU.

Alternatively, all paths can be uploaded to a single Uniform Buffer Object, enabling the identification of the correct point to fetch using pointId and uv for the tail mesh vertex.

Answer 2

When working with snippet code, it's important to note that the variable speed is treated differently in the update loop compared to the vertex shader.

For updating:

uniforms.u_time.value += conf.speed * 0.003

When using the shader:

float prevRatio = mod(u_time - u_speed - indexRatio * 3.0, thershold);

To achieve the desired outcome, consider changing u_speed to u_speed * 0.003 in the shader code (or preferably handle this multiplication in the JavaScript definition).

A quick way to debug such issues is by passing your values to the output color and verifying if it aligns with your expectations.

==================

If someone is interested in creating tails with non-flat curvature, they can retain the last N points of each particle path. This allows for complete computation of trail mesh geometry on the CPU before streaming it to the GPU.

Alternatively, all paths can be uploaded to a single Uniform Buffer Object, enabling the identification of the correct point to fetch using pointId and uv for the tail mesh vertex.

What are the steps to create a stunning motion blur shader effect?

Answer №1

Similar questions

Encountering an issue in Laravel when trying to retrieve data using relationships and the paginate() method

Cypress 7: Dealing with the onRequest Problem in the cy.intercept Function

Is there a way to turn off Sequelize syncing?

Role Based Routing in React allows for different paths and components

Fetching real-time Twitter search feeds through dynamic AJAX requests

Adding reflectionMaterial to an object in threejs: a step-by-step guide

Setting cookies with NextJS Route API post middleware

Fixed position toolbar within a container positioned beside a dynamically sized sidebar navigation

Having difficulty implementing the .fadeIn jQuery function on a script for transitioning homepage images

The MobX computed function is triggered before the item is fully added to the array

Utilizing ReactJS and PHP in Harmony

The Express router is failing to recognize the mongoose model

Orbit control camera in Aframe smoothly pans and rotates with ease animation when it reaches the limit

jquery does not allow text to be appended after an image

Is there a way to assign innerHTML values to table cells using PHP?

Clicking a button to reference a specific section within a list item

Updating documents in a mongoDB collection can be done by simply

"Customize the look of the action button in Material-UI's

Is there a way to trigger a function in an AngularJS controller from a Backbone controller?

Utilizing ajax to dynamically set the view of a leaflet map based on the input of a city