GlslViewer is a flexible console-base OpenGL Sandbox to display 2D/3D GLSL shaders without the need of an UI. You can definitely make your own UI or wrapper using the Python Module (include) or any other tool that communicates back/forth with glslViewer thought the standard POSIX console In/Out.

GlslViewer support both 2D shaders and/or 3D shaders when a geometry (PLY/OBJ) is provided.

GlslViewer gives support to:

• fragment and vertex shaders on GLSL 120 (compatible with WebGL 1.0 and OpenGL ES 2.0)
• resolve #include dependencies
• adding/deleting #defines, plus a rich set of automatically generated set of defines.
• adding/deleting uniforms (float, int, vec2, vec3 and vec4)
• import of Textures
• import of Cubemaps and spherical harmonics
• import PLY/OBJ (with materials)
• default vert/frag shaders with PBR lighting model
• hot reload of files on changes
• One default light and one default camera
• Interactive commands thought POSIX console IN/OUT
• headless rendering and image export
• PNG sequence export

• Installing GlslViewer

• Using GlslViewer

• GlslViewer Conventions

  • UNIFORMS

  • DEFINES

Patricio Gonzalez Vivo: github | twitter | instagram | website

Thanks to:

• Karim’s Naaki lot of concept and code was inspired by this two projects: fragTool and hdreffects

• Doug Moen he help to add the compatibility to ShaderToy shaders and some RayMarching features were added for his integration with his project: curv.

• Yvan Sraka for putting the code in shape and setting it up for TravisCI.

• Andsz for Spherical Harmonics code from Spherical Harmonics Playground

• Syoyo Fujita for the work on tinyobjloader v1.0.x

• Morgan McGuire's for the OBJ models on Computer Graphics Archive

• Philip Rideout and Romain Guy general generosity to share their code and experience