https://github.com/falcon11/glslsandbox-ios

glslsandbox implementation for iOS
https://github.com/falcon11/glslsandbox-ios

glsl glslsandbox gpuimage opengl

Last synced: 3 months ago
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glslsandbox implementation for iOS

• Host: GitHub
• URL: https://github.com/falcon11/glslsandbox-ios
• Owner: falcon11
• License: mit
• Created: 2019-12-02T13:48:53.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-01-12T05:50:52.000Z (over 5 years ago)
• Last Synced: 2025-01-14T01:24:15.440Z (4 months ago)
• Topics: glsl, glslsandbox, gpuimage, opengl
• Language: GLSL
• Homepage:
• Size: 4.33 MB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# glslsandbox-ios

## Overview

Native iOS implementation of [glslsandbox](http://glslsandbox.com/), using [GPUImage](https://github.com/BradLarson/GPUImage).

You can run most Fragment Shader copied from [glslsandox](http://glslsandbox.com/) or [ShaderToy](https://www.shadertoy.com/) without modification or just a little modification.

## Add new Fragment Shader

1. copy fragment shader source code from [glslsandbox](http://glslsandbox.com/)

2. create a new fragment shader source file under FragmentShader folder, then past code copied from last step. If you copy shader from [ShaderToy](https://www.shadertoy.com/), you need to modify the file.

   ```c

    // add below lines at begining

    #ifdef GL_ES

    precision mediump float;

    #endif

    uniform float time;

    uniform vec3 mouse;

    uniform vec2 resolution;

    // shadertoy emulation

    #define iTime time

    #define iResolution resolution

    #define iMouse mouse

    // add below lines at end

    // --------[ Original ShaderToy ends here ]---------- //

   void main(void)

   {

       mainImage(gl_FragColor, gl_FragCoord.xy);

   }

   ```

3. in ***GLSLSandboxListViewController.m*** file, add the fragment shader source file name to the `sandboxDemosList`.

4. run the project you will find the new demo in the demo list.

## Demo Snapshot