opengl_learn

Step-by-step introduction to OpenGL
git clone https://0xdd.org/code/opengl_learn.git
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ogl_mat4f_identity.c (570B)

      1 /*
      2 2018 David DiPaola
      3 licensed under CC0 (public domain, see https://creativecommons.org/publicdomain/zero/1.0/)
      4 */
      5 
      6 #include <GL/glew.h>
      7 
      8 #include "ogl.h"
      9 
     10 void
     11 ogl_mat4f_identity(
     12 	struct ogl_mat4f * out_matrix
     13 ) {
     14 	GLfloat * values = (*out_matrix).values;
     15 	values[ 0] = 1.0f; values[ 1] = 0.0f; values[ 2] = 0.0f; values[ 3] = 0.0f;
     16 	values[ 4] = 0.0f; values[ 5] = 1.0f; values[ 6] = 0.0f; values[ 7] = 0.0f;
     17 	values[ 8] = 0.0f; values[ 9] = 0.0f; values[10] = 1.0f; values[11] = 0.0f;
     18 	values[12] = 0.0f; values[13] = 0.0f; values[14] = 0.0f; values[15] = 1.0f;
     19 }
     20