Extensions

While in WebGL many optional extensions were required for more advanced functionality, in WebGL 2 you can remove most of those extensions, because they are available by default. Some of these include the following:

• Depth textures: https://www.khronos.org/registry/WebGL/extensions/WebGL_depth_texture
• Floating point textures:
  • https://www.khronos.org/registry/WebGL/extensions/OES_texture_float
  • https://www.khronos.org/registry/WebGL/extensions/OES_texture_float_linear
• Vertex array objects: https://www.khronos.org/registry/WebGL/extensions/OES_vertex_array_object
• Standard derivatives: https://www.khronos.org/registry/WebGL/extensions/OES_standard_derivatives
• Instanced drawing: https://www.khronos.org/registry/WebGL/extensions/ANGLE_instanced_arrays
• UNSIGNED_INT indices: https://www.khronos.org/registry/WebGL/extensions/OES_element_index_uint
• Setting gl_FragDepth: https://www.khronos.org/registry/WebGL/extensions/EXT_frag_depth
• Blend equation MIN/MAX: https://www.khronos.org/registry/WebGL/extensions/EXT_blend_minmax
• Direct texture LOD access: https://www.khronos.org/registry/WebGL/extensions/EXT_shader_texture_lod
• Multiple draw buffers: https://www.khronos.org/registry/WebGL/extensions/WebGL_draw_buffers
• Texture access in vertex shaders