OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, Eighth Edition

Matrix Functions

For each of the following built-in matrix functions, there is both a single-precision floating-point version, where all arguments and return values are single precision, and a double-precision floating-point version, where all arguments and return values are double precision. Only the single-precision floating-point version is shown.

mat matrixCompMult(mat x, mat y);

Multiply matrix x by matrix y component-wise, i.e.,

result[i][j] = x[i][j] × y[i][j]

for all i and j.

Note: to get linear algebraic matrix multiplication, use the multiply operator (*).

mat2 outerProduct(vec2 c, vec2 r);mat3 outerProduct(vec3 c, vec3 r);mat4 outerProduct(vec4 c, vec4 r);mat2x3 outerProduct(vec3 c, vec2 r);mat3x2 outerProduct(vec2 c, vec3 r