# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1447279022 -7200
# Node ID 3698f7b31ee61a0a5516db1fe6c86dfbdc3d773a
# Parent  c994aa032e3c7470728b73bc818504e71cbfb379
foo

diff -r c994aa032e3c -r 3698f7b31ee6 include/goatvr.h
--- a/include/goatvr.h	Thu Nov 05 07:25:36 2015 +0200
+++ b/include/goatvr.h	Wed Nov 11 23:57:02 2015 +0200
@@ -1,8 +1,22 @@
 #ifndef GOATVR_H_
 #define GOATVR_H_
 
+enum {
+	GVR_EYE_CENTER,
+	GVR_EYE_LEFT,
+	GVR_EYE_RIGHT
+};
+
 int gvr_init(void);
-void gvr_cleanup(void);
+void gvr_shutdown(void);
+
+/* ---- VR backend module management ---- */
+int gvr_module_count(void);
+char *gvr_module_name(int idx);
+int gvr_module_available(int idx);
+
+int gvr_active_module(void);
+int gvr_use_module(int idx);
 
 /* Enter VR rendering mode. GoatVR will assume control of your output, go fullscreen,
  * reposition your window to show up on the VR device, or whatever is needed depending
@@ -24,7 +38,6 @@
 unsigned int gvr_get_fbo_depth(void);
 
 /* ---- tracking ---- */
-
 int gvr_position(float *vec, int track_id);
 int gvr_rotation(float *quat, int track_id);
 int gvr_matrix(float *mat, int track_id);
@@ -32,4 +45,15 @@
 int gvr_view_matrix(float *mat, int eye); /* equivalent to inverse of gvr_matrix(mat, eye) */
 int gvr_proj_matrix(float *mat, int eye, float znear, float zfar);
 
+/* ---- options and parameters ---- */
+
+/* set fov in degrees, for backends which do not dictate an fov (mostly for fallback) */
+void gvr_set_fov(float fov);
+float gvr_get_fov(void);	/* might be approximate fov */
+
+void gvr_set_eye_height(void);		/* override eye height */
+float gvr_get_eye_height(void);
+void gvr_set_ipd(void);				/* override ipd */
+float gvr_get_ipd(void);
+
 #endif	/* GOATVR_H_ */
diff -r c994aa032e3c -r 3698f7b31ee6 src/module.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/module.h	Wed Nov 11 23:57:02 2015 +0200
@@ -0,0 +1,24 @@
+#ifndef MODULE_H_
+#define MODULE_H_
+
+#include "rtarg.h"
+
+struct module {
+	char *name;
+	void *data;
+
+	int (*init)(struct module*);
+	void (*shutdown)(struct module*);
+
+	void (*enter_vr)(struct module*);
+	void (*leave_vr)(struct module*);
+
+	void (*begin)(struct module*, int);
+	void (*end)(struct module*);
+	void (*present)(struct module*);
+
+	struct render_target *(*get_rtarg)(struct module*);
+
+};
+
+#endif	/* MODULE_H_ */
diff -r c994aa032e3c -r 3698f7b31ee6 src/rtarg.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/rtarg.h	Wed Nov 11 23:57:02 2015 +0200
@@ -0,0 +1,17 @@
+#ifndef RTARG_H_
+#define RTARG_H_
+
+struct eye_viewport {
+	int x, y, width, height;
+};
+
+struct render_target {
+	unsigned int fbo;
+	unsigned int color, depth;
+	int width, height;
+	int tex_width, tex_height;
+
+	struct eye_viewport eyevp[2];
+};
+
+#endif	/* RTARG_H_ */