From 864c5c2930ea914ed7fa532844865918156e84a3 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Tue, 22 Jul 2014 18:59:32 -0400
Subject: [PATCH] add GLProgram#bind_attribute

---
 src/GLProgram.cc | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/GLProgram.cc b/src/GLProgram.cc
index 94c7dc8..b59eae2 100644
--- a/src/GLProgram.cc
+++ b/src/GLProgram.cc
@@ -47,23 +47,26 @@ static VALUE GLProgram_attach_shader(VALUE self, VALUE gl_shader)
     return Qnil;
 }
 
+static VALUE GLProgram_bind_attribute(VALUE self, VALUE attr_name, VALUE index)
+{
+    GLProgram * glprogram;
+    Data_Get_Struct(self, GLProgram, glprogram);
+    attr_name = rb_funcall(attr_name, rb_intern("to_s"), 0);
+    const char * attr_name_cstr = StringValueCStr(attr_name);
+    glBindAttribLocation(glprogram->id, NUM2UINT(index), attr_name_cstr);
+
+    return Qnil;
+}
+
 void GLProgram_Init()
 {
     ruby_class = rb_define_class("GLProgram", rb_cObject);
     rb_define_singleton_method(ruby_class, "new", (VALUE(*)(...))GLProgram_new, -1);
     rb_define_method(ruby_class, "attach_shader", (VALUE(*)(...))GLProgram_attach_shader, 1);
+    rb_define_method(ruby_class, "bind_attribute", (VALUE(*)(...))GLProgram_bind_attribute, 2);
 }
 
 #if 0
-GLProgram & GLProgram::bind_attribute(const char * attribute, GLuint index)
-{
-    if (m_id > 0u)
-    {
-        glBindAttribLocation(m_id, index, attribute);
-    }
-    return *this;
-}
-
 bool GLProgram::link()
 {
     if (m_id == 0u)