1 #ifndef RT_H_

2 #define RT_H_

3

4 #include <stdio.h>

5 #include "scene.h"

6

7 enum {

8 ROPT_ITER,

9 ROPT_SHAD,

10 ROPT_REFL,

11

12 NUM_RENDER_OPTIONS

13 };

14

15 struct RendInfo {

16 float ambient[4];

17 int xsz, ysz;

18 int num_faces, num_lights;

19 int max_iter;

20 int cast_shadows;

21 };

22

23 struct Ray {

24 float origin[4], dir[4];

25 };

26

27 struct RenderStats {

28 unsigned long render_time, tex_update_time;

29

30 int aabb_tests, triangle_tests;

31 int min_aabb_tests, max_aabb_tests;

32 float avg_aabb_tests;

33 int min_triangle_tests, max_triangle_tests;

34 float avg_triangle_tests;

35

36 int rays_cast, rays_per_sec;

37 int prim_rays, refl_rays, shadow_rays;

38 int brdf_evals;

39 };

40

41

42 bool init_renderer(int xsz, int ysz, Scene *scn, unsigned int tex);

43 void destroy_renderer();

44 bool render();

45 void set_xform(float *matrix, float *invtrans);

46

47 const RendInfo *get_render_info();

48 const RenderStats *get_render_stats();

49 void print_render_stats(FILE *out = stdout);

50

51 void set_render_option(int opt, bool val);

52 void set_render_option(int opt, int val);

53 void set_render_option(int opt, float val);

54

55 bool get_render_option_bool(int opt);

56 int get_render_option_int(int opt);

57 float get_render_option_float(int opt);

58

59 // regular C++ raytracing using the KD-tree (single-threaded, keeps extensive debug stats)

60 bool init_dbg_renderer(int xsz, int ysz, Scene *scn, unsigned int texid);

61 void destroy_dbg_renderer();

62 void dbg_set_primary_rays(const Ray *rays);

63 void dbg_render(const float *xform, const float *invtrans_xform, int num_threads = -1);

64

65

66 // visualize the scene using OpenGL

67 void dbg_render_gl(Scene *scn, bool show_tree = false, bool show_obj = true);

68

69 #endif /* RT_H_ */