diff options
Diffstat (limited to 'progs/util')
| -rw-r--r-- | progs/util/shaderutil.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/progs/util/shaderutil.c b/progs/util/shaderutil.c index 7458513..2f1c4e3 100644 --- a/progs/util/shaderutil.c +++ b/progs/util/shaderutil.c @@ -6,6 +6,7 @@ */ +#include <assert.h> #include <stdio.h> #include <stdlib.h> #include <GL/glut.h> @@ -106,8 +107,12 @@ LinkShaders(GLuint vertShader, GLuint fragShader) { GLuint program = glCreateProgram_func(); - glAttachShader_func(program, fragShader); - glAttachShader_func(program, vertShader); + assert(vertShader || fragShader); + + if (fragShader) + glAttachShader_func(program, fragShader); + if (vertShader) + glAttachShader_func(program, vertShader); glLinkProgram_func(program); /* check link */ |