1.1 --- a/src/game.cc	Wed Sep 24 11:34:07 2014 +0300
     1.2 +++ b/src/game.cc	Thu Sep 25 11:44:45 2014 +0300
     1.3 @@ -1,101 +1,204 @@
     1.4 -#include <stdio.h>
     1.5 -#include <assert.h>
     1.6 -#include <algorithm>
     1.7 -#include "opengl.h"
     1.8 -#include "game.h"
     1.9 -#include "goatvr.h"
    1.10 -
    1.11 -static void create_rtarg(int x, int y);
    1.12 -static int next_pow2(int x);
    1.13 -
    1.14 -static int win_width, win_height;
    1.15 -static unsigned int fb_tex;
    1.16 -static unsigned int fbo, fb_depth;
    1.17 -static int fb_xsz, fb_ysz;
    1.18 -static int fb_tex_xsz, fb_tex_ysz;
    1.19 -
    1.20 -bool game_init()
    1.21 -{
    1.22 -	init_opengl();
    1.23 -
    1.24 -	if(vr_init() == -1) {
    1.25 -		return false;
    1.26 -	}
    1.27 -
    1.28 -	glEnable(GL_DEPTH_TEST);
    1.29 -	glEnable(GL_CULL_FACE);
    1.30 -
    1.31 -	int sdk_fb_xsz = vr_getf(VR_LEYE_XRES) + vr_getf(VR_REYE_XRES);
    1.32 -	int sdk_fb_ysz = std::max(vr_getf(VR_LEYE_YRES), vr_getf(VR_REYE_YRES));
    1.33 -	create_rtarg(sdk_fb_xsz, sdk_fb_ysz);
    1.34 -
    1.35 -	return true;
    1.36 -}
    1.37 -
    1.38 -void game_cleanup()
    1.39 -{
    1.40 -	vr_shutdown();
    1.41 -}
    1.42 -
    1.43 -void game_update(long tm)
    1.44 -{
    1.45 -}
    1.46 -
    1.47 -void game_display()
    1.48 -{
    1.49 -}
    1.50 -
    1.51 -void game_reshape(int x, int y)
    1.52 -{
    1.53 -}
    1.54 -
    1.55 -void game_keyboard(int key, bool pressed);
    1.56 -void game_mouse_button(int bn, bool state, int x, int y);
    1.57 -void game_mouse_motion(int x, int y);
    1.58 -
    1.59 -
    1.60 -static void create_rtarg(int x, int y)
    1.61 -{
    1.62 -	if(x == fb_xsz && y == fb_ysz) {
    1.63 -		return;	// nothing changed
    1.64 -	}
    1.65 -
    1.66 -	fb_xsz = x;
    1.67 -	fb_ysz = y;
    1.68 -	fb_tex_xsz = next_pow2(fb_xsz);
    1.69 -	fb_tex_ysz = next_pow2(fb_ysz);
    1.70 -
    1.71 -	if(!fbo) {
    1.72 -		glGenFramebuffers(1, &fbo);
    1.73 -
    1.74 -		glGenTextures(1, &fb_tex);
    1.75 -		glBindTexture(GL_TEXTURE_2D, fb_tex);
    1.76 -		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    1.77 -		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    1.78 -
    1.79 -		glGenRenderbuffers(1, &fb_depth);
    1.80 -	}
    1.81 -
    1.82 -	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
    1.83 -
    1.84 -	glBindTexture(GL_TEXTURE_2D, fb_tex);
    1.85 -	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, fb_tex_xsz, fb_tex_ysz, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
    1.86 -	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb_tex, 0);
    1.87 -
    1.88 -	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, fb_tex_xsz, fb_tex_ysz);
    1.89 -	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, fb_depth);
    1.90 -
    1.91 -	assert(glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
    1.92 -	glBindFramebuffer(GL_FRAMEBUFFER, 0);
    1.93 -}
    1.94 -
    1.95 -static int next_pow2(int x)
    1.96 -{
    1.97 -	x -= 1;
    1.98 -	x |= x >> 1;
    1.99 -	x |= x >> 2;
   1.100 -	x |= x >> 4;
   1.101 -	x |= x >> 8;
   1.102 -	x |= x >> 16;
   1.103 -	return x + 1;
   1.104 -}
   1.105 +#include <stdio.h>
   1.106 +#include <assert.h>
   1.107 +#include <algorithm>
   1.108 +#include "opengl.h"
   1.109 +#include "game.h"
   1.110 +#include "goatvr.h"
   1.111 +
   1.112 +static void draw_scene();
   1.113 +static void toggle_hmd_fullscr();
   1.114 +static void create_rtarg(int x, int y);
   1.115 +static int next_pow2(int x);
   1.116 +
   1.117 +static int win_width, win_height;
   1.118 +static unsigned int fb_tex;
   1.119 +static unsigned int fbo, fb_depth;
   1.120 +static int fb_xsz, fb_ysz;
   1.121 +static int fb_tex_xsz, fb_tex_ysz;
   1.122 +
   1.123 +bool game_init()
   1.124 +{
   1.125 +	init_opengl();
   1.126 +
   1.127 +	if(vr_init() == -1) {
   1.128 +		return false;
   1.129 +	}
   1.130 +
   1.131 +	glEnable(GL_DEPTH_TEST);
   1.132 +	glEnable(GL_CULL_FACE);
   1.133 +
   1.134 +	return true;
   1.135 +}
   1.136 +
   1.137 +void game_cleanup()
   1.138 +{
   1.139 +	vr_shutdown();
   1.140 +}
   1.141 +
   1.142 +void game_update(long tm)
   1.143 +{
   1.144 +}
   1.145 +
   1.146 +void game_display()
   1.147 +{
   1.148 +	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
   1.149 +	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   1.150 +
   1.151 +	for(int i=0; i<2; i++) {
   1.152 +		glViewport(i == 0 ? 0 : fb_xsz / 2, 0, fb_xsz / 2, fb_ysz);
   1.153 +		vr_begin(i);
   1.154 +
   1.155 +		float proj[16];
   1.156 +		if(vr_proj_matrix(i, 0.5, 500.0, proj)) {
   1.157 +			glMatrixMode(GL_PROJECTION);
   1.158 +			glLoadMatrixf(proj);
   1.159 +		}
   1.160 +
   1.161 +		glMatrixMode(GL_MODELVIEW);
   1.162 +
   1.163 +		float view[16];
   1.164 +		vr_view_matrix(i, view);
   1.165 +		glLoadMatrixf(view);
   1.166 +		/* move the camera to the eye level of the user */
   1.167 +		glTranslatef(0, -vr_getf_def(VR_EYE_HEIGHT, 1.65), 0);
   1.168 +
   1.169 +		draw_scene();
   1.170 +
   1.171 +		vr_end();
   1.172 +	}
   1.173 +
   1.174 +	glBindFramebuffer(GL_FRAMEBUFFER, 0);
   1.175 +	glViewport(0, 0, win_width, win_height);
   1.176 +
   1.177 +	vr_swap_buffers();
   1.178 +	assert(glGetError() == GL_NO_ERROR);
   1.179 +}
   1.180 +
   1.181 +void game_reshape(int x, int y)
   1.182 +{
   1.183 +	win_width = x;
   1.184 +	win_height = y;
   1.185 +
   1.186 +	create_rtarg(vr_geti_def(VR_RENDER_XRES, x), vr_geti_def(VR_RENDER_YRES, y));
   1.187 +	vr_output_texture(fb_tex, 0, 0, (float)fb_xsz / (float)fb_tex_xsz, (float)fb_ysz / (float)fb_tex_ysz);
   1.188 +
   1.189 +	/* these might be overriden in VR mode (see game_display) */
   1.190 +	glViewport(0, 0, x, y);
   1.191 +	glMatrixMode(GL_PROJECTION);
   1.192 +	glLoadIdentity();
   1.193 +	gluPerspective(50.0, (float)x / (float)y, 0.5, 500.0);
   1.194 +}
   1.195 +
   1.196 +void game_keyboard(int key, bool pressed)
   1.197 +{
   1.198 +	if(pressed) {
   1.199 +		switch(key) {
   1.200 +		case 27:
   1.201 +			exit_game();
   1.202 +			break;
   1.203 +
   1.204 +		case 'f':
   1.205 +			toggle_hmd_fullscr();
   1.206 +			break;
   1.207 +
   1.208 +		case 'r':
   1.209 +			vr_recenter();
   1.210 +			break;
   1.211 +
   1.212 +		default:
   1.213 +			break;
   1.214 +		}
   1.215 +	}
   1.216 +}
   1.217 +
   1.218 +void game_mouse_button(int bn, bool state, int x, int y)
   1.219 +{
   1.220 +}
   1.221 +
   1.222 +void game_mouse_motion(int x, int y)
   1.223 +{
   1.224 +}
   1.225 +
   1.226 +static void draw_scene()
   1.227 +{
   1.228 +}
   1.229 +
   1.230 +static void toggle_hmd_fullscr()
   1.231 +{
   1.232 +	static bool fullscr;
   1.233 +	static int prev_x, prev_y;
   1.234 +	//static int prev_xsz, prev_ysz;
   1.235 +
   1.236 +	fullscr = !fullscr;
   1.237 +	if(fullscr) {
   1.238 +		/* entering fullscreen on the HMD */
   1.239 +		int xoffs = vr_geti_def(VR_WIN_XOFFS, -1);
   1.240 +		int yoffs = vr_geti_def(VR_WIN_YOFFS, -1);
   1.241 +		if(xoffs != -1) {
   1.242 +			get_window_pos(&prev_x, &prev_y);
   1.243 +			move_window(xoffs, yoffs);
   1.244 +		}
   1.245 +
   1.246 +		int xsz = vr_geti_def(VR_DISPLAY_WIDTH, -1);
   1.247 +		int ysz = vr_geti_def(VR_DISPLAY_HEIGHT, -1);
   1.248 +		if(xsz != -1) {
   1.249 +			//prev_xsz = win_width;
   1.250 +			//prev_ysz = win_height;
   1.251 +			resize_window(xsz, ysz);
   1.252 +		}
   1.253 +		enter_fullscreen();
   1.254 +
   1.255 +	} else {
   1.256 +		/* leaving fullscreen */
   1.257 +		leave_fullscreen();
   1.258 +		/*move_window(prev_x, prev_y);
   1.259 +		resize_window(prev_xsz, prev_ysz);*/
   1.260 +	}
   1.261 +}
   1.262 +
   1.263 +static void create_rtarg(int x, int y)
   1.264 +{
   1.265 +	if(x == fb_xsz && y == fb_ysz) {
   1.266 +		return;	// nothing changed
   1.267 +	}
   1.268 +
   1.269 +	fb_xsz = x;
   1.270 +	fb_ysz = y;
   1.271 +	fb_tex_xsz = next_pow2(fb_xsz);
   1.272 +	fb_tex_ysz = next_pow2(fb_ysz);
   1.273 +
   1.274 +	if(!fbo) {
   1.275 +		glGenFramebuffers(1, &fbo);
   1.276 +
   1.277 +		glGenTextures(1, &fb_tex);
   1.278 +		glBindTexture(GL_TEXTURE_2D, fb_tex);
   1.279 +		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
   1.280 +		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
   1.281 +
   1.282 +		glGenRenderbuffers(1, &fb_depth);
   1.283 +	}
   1.284 +
   1.285 +	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
   1.286 +
   1.287 +	glBindTexture(GL_TEXTURE_2D, fb_tex);
   1.288 +	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, fb_tex_xsz, fb_tex_ysz, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
   1.289 +	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb_tex, 0);
   1.290 +
   1.291 +	glBindRenderbuffer(GL_RENDERBUFFER, fb_depth);
   1.292 +	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, fb_tex_xsz, fb_tex_ysz);
   1.293 +	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, fb_depth);
   1.294 +
   1.295 +	assert(glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
   1.296 +	glBindFramebuffer(GL_FRAMEBUFFER, 0);
   1.297 +}
   1.298 +
   1.299 +static int next_pow2(int x)
   1.300 +{
   1.301 +	x -= 1;
   1.302 +	x |= x >> 1;
   1.303 +	x |= x >> 2;
   1.304 +	x |= x >> 4;
   1.305 +	x |= x >> 8;
   1.306 +	x |= x >> 16;
   1.307 +	return x + 1;
   1.308 +}