OpenGL shader player,compatible with single pass interactive shader format, shadertoy, glsl sandbox shaders with generally few adaptations.
In Usine, the openGL shader is made of a vertex, a fragment containing eventually interactive shader format definitions, and a header containing various definitions and compatibility settings.
It's outside the purpose of the manual to learn you how to create a shader but you can start with examples of the library. There are 3 kind of examples:
draw: simples shaders which are drawing images with sometime mouse interaction.
isf: Interactive Shader Format shaders with extra inputs on the modules according to the ISF definitions.
fx: shaders which are transforming an input image and contain a video input inlet.
The header contains the following compatibility definitions. It can be changed by editing the file /Resources/Templates/Shaders
inside the application folder.
/////////////////////////////////////////////////////////////////////////////////
// compatibility with Sandbox
uniform float time; // shader playback time (in seconds)
uniform vec4 date; // current date vec4(Y,M,D,S)
uniform vec2 resolution; // viewport resolution (in pixels)
uniform vec2 mouse; // mouse pixel coords. xy: current
uniform float mousedown; // is 1.0 if mouse is down 0.0 otherwize
uniform int frame; // shader playback frame
uniform float timedelta; // render time (in seconds)
//////////////////////////////////////////////////////////////////////////////////
// compatibility with shadertoy
#define iMouse vec4(mouse.x*resolution.x,mouse.y*resolution.y,mousedown,mousedown)
#define iTime time
#define iTimeDelta timedelta
#define iResolution vec3(resolution.x,resolution.y,0.0)
#define iChannel0 backbuffer
#define iFrame frame
#define iDate date
//////////////////////////////////////////////////////////////////////////////////
// compatibility with ISF
#define RENDERSIZE resolution
#define FRAMEINDEX frame
#define TIME time
#define TIMEDELTA timedelta
#define isf_FragNormCoord (gl_FragCoord.xy/resolution.xy)
//////////////////////////////////////////////////////////////////////////////////
// Usine inputs
uniform sampler2D backbuffer; // background texture
uniform vec2 surfaceSize; // surface resolution (in pixels) = resolution
Activates or deactivates the module.
Total time used for the calculation of the module.
Video output flow(s).
Overall speed of the shader.
Restart the shader (sets the time uniform to 0).
Width in pixels of the shader video output.
Height in pixels of the shader video output.
Opens the shader editor window.
File name of the shader fragment to open.
version 5.2.221206
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