first render

[retroray] / src / rend.h

diff --git a/src/rend.h b/src/rend.h
index 7508de4..33c5963 100644 (file)
--- a/src/rend.h
+++ b/src/rend.h
@@ -18,14 +18,27 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #ifndef REND_H_
 #define REND_H_
 
+#include "cgmath/cgmath.h"
+#include "geom.h"
 #include "sizeint.h"
 #include "imago2.h"
 
 extern struct img_pixmap renderbuf;
+extern int max_ray_depth;
+extern cgm_vec3 ambient;
+
+struct scene;
 
 int rend_init(void);
 void rend_size(int xsz, int ysz);
+void rend_pan(int xoffs, int yoffs);
 void rend_begin(int x, int y, int w, int h);
 int render(uint32_t *fb);
 
+int ray_trace(const cgm_ray *ray, int maxiter, cgm_vec3 *res);
+
+cgm_vec3 bgcolor(const cgm_ray *ray);
+cgm_vec3 shade(const cgm_ray *ray, const struct rayhit *hit, int maxiter);
+
+
 #endif /* REND_H_ */