Rename function for clarity.
Create modelview matrix for thumbnail renders directly using glm calls.
Move RenderThumbnail function into ShaderToyPane.
Move RenderThumbnails function into ShaderGalleryScene.
Move CompileShaders function into ShaderGalleryScene.
Separate text rendering from thumbnail rendering in ShaderToyPane.
Render thumbnail view to FBOs when highlighted as the Shadertoy site does.