vrseasons

view src/game.cc @ 1:65c2e37c48b2

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author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 12 Apr 2015 03:39:55 +0300
parents 393ef1143c9c
children
line source
1 #include <assert.h>
2 #include "opengl.h"
3 #include "game.h"
4 #include <stdio.h>
5 #include <goatvr.h>
6 #include "main.h"
7 #include "scene.h"
8 #include "timer.h"
9 #include "rtarg.h"
10 #include "opt.h"
11
12 static bool vr_mode = true;
13 static int win_width, win_height;
14 static RenderTarget vr_rtarg;
15 static Options opt;
16
17 bool game_init(int argc, char **argv)
18 {
19 if(!parse_args(&opt, argc, argv)) {
20 return false;
21 }
22
23 init_gl();
24
25 if(vr_mode) {
26 if(vr_init() == -1) {
27 return false;
28 }
29
30 win_width = vr_geti_def(VR_DISPLAY_WIDTH, 1280);
31 win_height = vr_geti_def(VR_DISPLAY_HEIGHT, 800);
32 resize_window(win_width, win_height);
33
34 int rt_width = vr_geti_def(VR_RENDER_XRES, win_width);
35 int rt_height = vr_geti_def(VR_RENDER_YRES, win_height);
36 vr_rtarg.create(rt_width, rt_height);
37 }
38
39 return true;
40 }
41
42 void game_shutdown()
43 {
44 vr_shutdown();
45 }
46
47 void game_draw()
48 {
49 static unsigned long prev_msec;
50 unsigned long msec = get_msec();
51 float dt = (float)(msec - prev_msec) / 1000.0;
52
53 update_scene(msec, dt);
54
55 if(vr_mode) {
56 set_render_target(&vr_rtarg);
57
58 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
59
60 for(int i=0; i<2; i++) {
61 vr_begin(i);
62
63 glViewport(i == VR_EYE_LEFT ? 0 : vr_rtarg.get_width() / 2, 0, vr_rtarg.get_width() / 2, vr_rtarg.get_height());
64
65 glMatrixMode(GL_PROJECTION);
66 float proj[16];
67 if(vr_proj_matrix(i, 0.5, 500.0, proj)) {
68 glLoadMatrixf(proj);
69 } else {
70 glLoadIdentity();
71 gluPerspective(50.0, (float)win_width / 2.0 / (float)win_height, 0.5, 500.0);
72 }
73
74 float view[16];
75 vr_view_matrix(i, view);
76
77 glMatrixMode(GL_MODELVIEW);
78 glLoadMatrixf(view);
79 glTranslatef(0, -vr_getf(VR_EYE_HEIGHT), 0);
80
81 draw_scene();
82
83 vr_end();
84 }
85
86 set_render_target(0);
87 glViewport(0, 0, win_width, win_height);
88
89 vr_swap_buffers();
90
91 } else {
92 glMatrixMode(GL_MODELVIEW);
93 glLoadIdentity();
94
95 draw_scene();
96
97 swap_buffers();
98 }
99
100 assert(glGetError() == GL_NO_ERROR);
101 }
102
103 void game_reshape(int x, int y)
104 {
105 glViewport(0, 0, x, y);
106
107 if(vr_mode) {
108 vr_rtarg.resize(x, y);
109
110 float umax = (float)vr_rtarg.get_width() / (float)vr_rtarg.get_tex_width();
111 float vmax = (float)vr_rtarg.get_height() / (float)vr_rtarg.get_tex_height();
112 vr_output_texture(vr_rtarg.get_texture(), 0, 0, umax, vmax);
113 }
114 }
115
116 void game_keyboard(int key, bool press)
117 {
118 if(press) {
119 switch(key) {
120 case 27:
121 quit();
122
123 case ' ':
124 if(vr_mode) {
125 vr_recenter();
126 }
127 break;
128 }
129 }
130 }
131
132 void game_mbutton(int bn, bool press, int x, int y)
133 {
134 }
135
136 void game_mmotion(int x, int y)
137 {
138 }