Use const for arg

2 files changed, 2 insertions, 2 deletions

diff --git a/include/mgl/graphics/rectangle.h b/include/mgl/graphics/rectangle.h
index c48d108..c18d818 100644
--- a/include/mgl/graphics/rectangle.h
+++ b/include/mgl/graphics/rectangle.h
@@ -12,6 +12,6 @@ typedef struct {
     mgl_color color;
 } mgl_rectangle;
 
-void mgl_rectangle_draw(mgl_context *context, mgl_rectangle *rect);
+void mgl_rectangle_draw(mgl_context *context, const mgl_rectangle *rect);
 
 #endif /* MGL_RECTANGLE_H */
diff --git a/src/graphics/rectangle.c b/src/graphics/rectangle.c
index c6b2126..879e0dd 100644
--- a/src/graphics/rectangle.c
+++ b/src/graphics/rectangle.c
@@ -1,7 +1,7 @@
 #include "../../include/mgl/graphics/rectangle.h"
 #include "../../include/mgl/mgl.h"
 
-void mgl_rectangle_draw(mgl_context *context, mgl_rectangle *rect) {
+void mgl_rectangle_draw(mgl_context *context, const mgl_rectangle *rect) {
     context->gl.glColor4ub(rect->color.r, rect->color.g, rect->color.b, rect->color.a);
     context->gl.glBegin(GL_QUADS);
         context->gl.glVertex3f(rect->position.x,                rect->position.y, 0.0f);