Question 1

What is ShaderSpace?

Accepted Answer

ShaderSpace is a free, browser-based GLSL fragment shader editor and WebGL playground. You can write, compile, and run GLSL shaders in real time without installing anything — just open the site and start coding.

Question 2

Can I write and test GLSL shaders online for free?

Accepted Answer

Yes. ShaderSpace is completely free. Open shaderspace.pro in any WebGL-capable browser, type your GLSL fragment shader code in the editor, and press Compile (or Ctrl+Enter) to see the result instantly.

Question 3

Does ShaderSpace support texture maps?

Accepted Answer

Yes. ShaderSpace supports up to 4 texture slots (source0–source3). You can upload your own images or choose from the built-in texture library. Textures are available as sampler2D uniforms in your shader code.

Question 4

What GLSL uniforms are available in ShaderSpace?

Accepted Answer

ShaderSpace automatically provides: u_time (float, seconds elapsed), u_resolution (vec2, canvas size in pixels), u_mouse (vec2, mouse position), u_frame (int, frame counter), and source0–source3 (sampler2D, texture inputs).

Question 5

Is ShaderSpace a good Shadertoy alternative?

Accepted Answer

ShaderSpace is a great Shadertoy alternative for writing and testing GLSL fragment shaders online. It features real-time compilation, texture support, GLSL autocomplete, error linting, a built-in function reference, and free cloud save. Shaders use the same mainImage(out vec4 fragColor, in vec2 fragCoord) entry point convention.

Question 6

Can I save and share my shaders?

Accepted Answer

Yes. Create a free account on ShaderSpace to save your shaders to the cloud and access them from any device. Saved shaders get a unique URL you can share with others.