+void set_uniform_float_array(GLuint glsl_program_num, const std::string &prefix, const std::string &key, const float *values, size_t num_values)
+{
+ std::string name = prefix + "_" + key;
+ GLint l = glGetUniformLocation(glsl_program_num, name.c_str());
+ if (l == -1) {
+ return;
+ }
+ check_error();
+ glUniform1fv(l, num_values, values);
+ check_error();
+}
+