Each pair of vertices is a independent line segment.

[[OpenGL_Programming/reference/GL_LINE_STRIP

Draws a connected group of line segments from the first vertex to the last. After the first Vertices each additonal Vertices draws a new line.

[[OpenGL_Programming/reference/GL_LINE_LOOP

Draws a connected group of line segments from the first vertex to the last. The last line is defined by the first and last vertex makeing a closed loop.

[[OpenGL_Programming/reference/GL_TRIANGLES

Each triplet of vertices as an independent triangle.

Must be a multiple of 3

[[OpenGL_Programming/reference/GL_TRIANGLE_STRIP

Draws a connected group of triangles. After the first 2 vertices each additonal point defines a new triangle. The triangle is made up of the last 2 and the newist vertex moving down the list.

[[OpenGL_Programming/reference/GL_TRIANGLE_FAN

Draws a connected group of triangles. After the first 2 vertices each additonal point defines a new triangle. The triangle is made up of the first the last and the newist vertex moving down the list.

[[OpenGL_Programming/reference/GL_QUADS

Each group of four vertices as an independent quadriliteral.

Must be a multiple of 4

[[OpenGL_Programming/reference/GL_QUAD_STRIP

Draws a connected group of quadriliterals. After the first 2 Vertices each additonal pair Vertices makes a new quadriliteral.

Must be a multiple of 2 after the first 2 Vertices.

[[OpenGL_Programming/reference/GL_POLYGON

Draws a single polygon. same as GL_LINE_STRIP

Must have 3 or more Vertices.

Functions allowed inside a glBegin glEnd section[edit]