Shadertoy Compatibility¶

Shader Studio is built around Shadertoy-style fragment shaders. Your shader must define a mainImage function:

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    // your shader code
}

Supported Uniforms¶

Uniform	Type	Description
`iTime`	`float`	Elapsed time in seconds
`iTimeDelta`	`float`	Time since last frame in seconds
`iFrameRate`	`float`	Frames per second
`iFrame`	`int`	Frame counter (starts at 0)
`iMouse`	`vec4`	Mouse position: xy = current, zw = click position
`iResolution`	`vec3`	Canvas dimensions: xy = width/height, z = 1.0
`iChannel0–3`	`sampler2D`	Input texture channels
`iChannelResolution[4]`	`vec3[]`	Resolution of each input channel
`iChannelTime[4]`	`float[]`	Playback time for each audio channel
`iDate`	`vec4`	Year, month, day, seconds since midnight
`iSampleRate`	`float`	Audio sample rate (44100)

These uniforms are provided by Shader Studio but are not part of the Shadertoy API:

Uniform	Type	Description
`iCameraPos`	`vec3`	Camera position in world space (moved with WASD/QE)
`iCameraDir`	`vec3`	Camera look direction (controlled with mouse or IJKL)

Type	Description
Buffer	Output from another pass (BufferA–D)
Texture	Image files (jpg, png, etc.)
Video	Video files (webm, mp4, mov, avi)
Audio	Audio files (mp3, wav, ogg, etc.) — provides FFT and waveform data as a texture
Cubemap	Cross-layout cubemap images — bound as `samplerCube`
Keyboard	Key state input

Pass	Description
Image	Main output pass (required)
BufferA–D	Up to 4 intermediate render passes
Common	Shared code included in all passes

Feature	Notes
Webcam input	Live camera feed (planned)
Microphone input	Real-time audio from microphone
VR/AR	Immersive rendering modes