OpenGL Coordinate Pipeline Explorer

Follow one vertex from a model-space position to a window pixel.

Object coordinates

local 3D space

Viewport result

OpenGL lower-left origin
Tracked vertexv8 NDC Window Visibility

Experiment controls

live values

Tracked input

Model transform

View transform

Projection and viewport

Calculation for the tracked vertex

inside clip volume clipped
Transformation matrices (column-vector convention)

Coordinates are rounded to three decimals for display; calculations use full JavaScript floating-point precision. Eye space is right-handed and looks along the negative z-axis. OpenGL NDC z ranges from -1 to +1.