Specifies what kind of primitives to render. Symbolic constants GL_POINTS, GL_LINE_STRIP, GL_LINE_LOOP, GL_LINES, GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_TRIANGLES, GL_TRIANGLE_STRIP_ADJACENCY and GL_TRIANGLES_ADJACENCY are accepted.
Specifies the number of elements to be rendered.
Specifies the type of the values in indices. Must be one of GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, or GL_UNSIGNED_INT.
Specifies an offset of the first index in the array in the data store of the buffer currently bound to the GL_ELEMENT_ARRAY_BUFFER target.
render primitives from array data
Songho - OpenGL Vertex Buffer Object (VBO)
open.gl - The Graphics Pipeline
opengl-tutorial.org - Tutorial 13 : Normal Mapping
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glDrawElementsspecifies multiple geometric primitives with very few subroutine calls. Instead of calling a GL function to pass each individual vertex, normal, texture coordinate, edge flag, or color, you can prespecify separate arrays of vertices, normals, and so on, and use them to construct a sequence of primitives with a single call toglDrawElements.When
glDrawElementsis called, it uses count sequential elements from an enabled array, starting at indices to construct a sequence of geometric primitives. mode specifies what kind of primitives are constructed and how the array elements construct these primitives. If more than one array is enabled, each is used.Vertex attributes that are modified by
glDrawElementshave an unspecified value afterglDrawElementsreturns. Attributes that aren't modified maintain their previous values.