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Change- glBufferData now accepts null pointers which allows you to delete a buffer's data

--- a/src/arrays.c

+++ b/src/arrays.c

@@ -268,6 +268,7 @@

 	}

 	if(buf->data) gl_free(buf->data);

 	buf->data = NULL; buf->size = 0;

+	if(size == 0 || data == NULL) return; //Allow the user to delete buffer data with glBufferData.

 	buf->data = gl_malloc(size);

 	buf->size = size;

 	if(!(buf->data)){