libgoatvr

annotate src/vr_libovr.c @ 14:604a9a0a8c37

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fixed call to ovrHmd_ConfigureTracking to stop setting the ovrTrackingCap_Idle bit
author John Tsiombikas <nuclear@member.fsf.org>
date Thu, 25 Sep 2014 07:52:49 +0300
parents 34d4643d61f9
children 27fcd4c2969d
rev   line source
nuclear@0 1 #ifdef WIN32
nuclear@0 2 #define OVR_OS_WIN32
nuclear@0 3 #endif
nuclear@9 4 #ifdef __APPLE__
nuclear@9 5 #define OVR_OS_MAC
nuclear@9 6 #endif
nuclear@0 7
nuclear@0 8 #include "vr_impl.h"
nuclear@0 9
nuclear@0 10 #ifdef USE_LIBOVR
nuclear@0 11 #include <stdio.h>
nuclear@0 12 #include <stdlib.h>
nuclear@9 13 #include <string.h>
nuclear@0 14 #include <assert.h>
nuclear@0 15 #include "opt.h"
nuclear@0 16
nuclear@0 17 #include <OVR_CAPI.h>
nuclear@0 18 #include <OVR_CAPI_GL.h>
nuclear@0 19
nuclear@0 20 #define DISABLE_RETARDED_HEALTH_WARNING
nuclear@0 21
nuclear@0 22 /* just dropping the prototype here to avoid including CAPI_HSWDisplay.h */
nuclear@0 23 OVR_EXPORT void ovrhmd_EnableHSWDisplaySDKRender(ovrHmd hmd, ovrBool enabled);
nuclear@0 24
nuclear@0 25 static ovrHmd hmd;
nuclear@0 26 static void *optdb;
nuclear@0 27 static ovrEyeRenderDesc eye_render_desc[2];
nuclear@0 28 static ovrSizei eye_res[2];
nuclear@0 29 static ovrGLTexture eye_tex[2];
nuclear@0 30 static ovrFovPort eye_fov[2];
nuclear@0 31 static ovrPosef pose[2];
nuclear@0 32 static int deferred_init_done;
nuclear@0 33
nuclear@0 34 static int init(void)
nuclear@0 35 {
nuclear@0 36 int i, num_hmds;
nuclear@9 37 int use_fake = 0;
nuclear@14 38 ovrTrackingCaps tracking;
nuclear@0 39
nuclear@0 40 if(!ovr_Initialize()) {
nuclear@0 41 return -1;
nuclear@0 42 }
nuclear@0 43 printf("initialized LibOVR %s\n", ovr_GetVersionString());
nuclear@0 44
nuclear@0 45 if(!(num_hmds = ovrHmd_Detect())) {
nuclear@9 46 if(getenv("VR_LIBOVR_FAKE")) {
nuclear@9 47 use_fake = 1;
nuclear@9 48 num_hmds = 1;
nuclear@9 49 } else {
nuclear@9 50 ovr_Shutdown();
nuclear@9 51 return -1;
nuclear@9 52 }
nuclear@0 53 }
nuclear@0 54 printf("%d Oculus HMD(s) found\n", num_hmds);
nuclear@0 55
nuclear@0 56 hmd = 0;
nuclear@0 57 for(i=0; i<num_hmds; i++) {
nuclear@9 58 ovrHmd h = use_fake ? ovrHmd_CreateDebug(ovrHmd_DK2) : ovrHmd_Create(i);
nuclear@9 59 if(!h) {
nuclear@0 60 break;
nuclear@0 61 }
nuclear@0 62 printf(" [%d]: %s - %s\n", i, h->Manufacturer, h->ProductName);
nuclear@0 63
nuclear@0 64 if(!hmd) {
nuclear@0 65 hmd = h;
nuclear@0 66 } else {
nuclear@0 67 ovrHmd_Destroy(h);
nuclear@0 68 }
nuclear@0 69 }
nuclear@0 70
nuclear@0 71 if(!hmd) {
nuclear@0 72 fprintf(stderr, "failed to initialize any Oculus HMDs\n");
nuclear@0 73 return -1;
nuclear@0 74 }
nuclear@0 75
nuclear@14 76 tracking = ovrTrackingCap_Orientation | ovrTrackingCap_Position |
nuclear@14 77 ovrTrackingCap_MagYawCorrection;
nuclear@14 78 ovrHmd_ConfigureTracking(hmd, tracking, 0);
nuclear@0 79
nuclear@0 80 eye_fov[0] = hmd->DefaultEyeFov[0];
nuclear@0 81 eye_fov[1] = hmd->DefaultEyeFov[1];
nuclear@0 82
nuclear@0 83 eye_res[0] = ovrHmd_GetFovTextureSize(hmd, ovrEye_Left, eye_fov[0], 1.0);
nuclear@0 84 eye_res[1] = ovrHmd_GetFovTextureSize(hmd, ovrEye_Right, eye_fov[1], 1.0);
nuclear@0 85
nuclear@0 86 /* create the options database */
nuclear@0 87 if((optdb = create_options())) {
nuclear@11 88 set_option_int(optdb, VR_DISPLAY_WIDTH, hmd->Resolution.w);
nuclear@11 89 set_option_int(optdb, VR_DISPLAY_HEIGHT, hmd->Resolution.h);
nuclear@11 90 set_option_int(optdb, VR_LEYE_XRES, eye_res[0].w);
nuclear@11 91 set_option_int(optdb, VR_LEYE_YRES, eye_res[0].h);
nuclear@11 92 set_option_int(optdb, VR_REYE_XRES, eye_res[1].w);
nuclear@11 93 set_option_int(optdb, VR_REYE_YRES, eye_res[1].h);
nuclear@11 94 set_option_float(optdb, VR_EYE_HEIGHT, ovrHmd_GetFloat(hmd, OVR_KEY_EYE_HEIGHT, OVR_DEFAULT_EYE_HEIGHT));
nuclear@11 95 set_option_float(optdb, VR_IPD, ovrHmd_GetFloat(hmd, OVR_KEY_IPD, OVR_DEFAULT_IPD));
nuclear@11 96 set_option_int(optdb, VR_WIN_XOFFS, hmd->WindowsPos.x);
nuclear@11 97 set_option_int(optdb, VR_WIN_YOFFS, hmd->WindowsPos.y);
nuclear@0 98 }
nuclear@0 99
nuclear@0 100 deferred_init_done = 0;
nuclear@0 101 return 0;
nuclear@0 102 }
nuclear@0 103
nuclear@0 104 static void deferred_init(void)
nuclear@0 105 {
nuclear@0 106 union ovrGLConfig glcfg;
nuclear@0 107 unsigned int dcaps;
nuclear@0 108 void *win = 0;
nuclear@0 109
nuclear@0 110 deferred_init_done = 1;
nuclear@0 111
nuclear@0 112 memset(&glcfg, 0, sizeof glcfg);
nuclear@0 113 glcfg.OGL.Header.API = ovrRenderAPI_OpenGL;
nuclear@0 114 glcfg.OGL.Header.RTSize = hmd->Resolution;
nuclear@0 115 glcfg.OGL.Header.Multisample = 1;
nuclear@0 116 #ifdef WIN32
nuclear@0 117 win = GetActiveWindow();
nuclear@0 118 /*glcfg.OGL.Window = win;
nuclear@0 119 glcfg.OGL.DC = wglGetCurrentDC();
nuclear@0 120 assert(glcfg.OGL.Window);
nuclear@0 121 assert(glcfg.OGL.DC);*/
nuclear@0 122 #endif
nuclear@0 123
nuclear@0 124 if(!(hmd->HmdCaps & ovrHmdCap_ExtendDesktop)) {
nuclear@0 125 ovrHmd_AttachToWindow(hmd, win, 0, 0);
nuclear@0 126 printf("running in \"direct-to-rift\" mode\n");
nuclear@0 127 } else {
nuclear@0 128 printf("running in \"extended desktop\" mode\n");
nuclear@0 129 }
nuclear@0 130 ovrHmd_SetEnabledCaps(hmd, ovrHmdCap_LowPersistence | ovrHmdCap_DynamicPrediction);
nuclear@0 131
nuclear@0 132 dcaps = ovrDistortionCap_Chromatic | ovrDistortionCap_Vignette | ovrDistortionCap_TimeWarp |
nuclear@0 133 ovrDistortionCap_Overdrive | ovrDistortionCap_NoRestore;
nuclear@0 134
nuclear@0 135 if(!ovrHmd_ConfigureRendering(hmd, &glcfg.Config, dcaps, eye_fov, eye_render_desc)) {
nuclear@0 136 fprintf(stderr, "failed to configure LibOVR distortion renderer\n");
nuclear@0 137 }
nuclear@0 138
nuclear@0 139 #ifdef DISABLE_RETARDED_HEALTH_WARNING
nuclear@0 140 ovrhmd_EnableHSWDisplaySDKRender(hmd, 0);
nuclear@0 141 #endif
nuclear@0 142 }
nuclear@0 143
nuclear@0 144 static void cleanup(void)
nuclear@0 145 {
nuclear@0 146 if(hmd) {
nuclear@0 147 ovrHmd_Destroy(hmd);
nuclear@0 148 ovr_Shutdown();
nuclear@0 149 }
nuclear@5 150 destroy_options(optdb);
nuclear@0 151 }
nuclear@0 152
nuclear@0 153 static int set_option(const char *opt, enum opt_type type, void *valp)
nuclear@0 154 {
nuclear@0 155 switch(type) {
nuclear@0 156 case OTYPE_INT:
nuclear@0 157 set_option_int(optdb, opt, *(int*)valp);
nuclear@0 158 break;
nuclear@0 159
nuclear@0 160 case OTYPE_FLOAT:
nuclear@0 161 set_option_float(optdb, opt, *(float*)valp);
nuclear@0 162 break;
nuclear@0 163 }
nuclear@0 164 return 0;
nuclear@0 165 }
nuclear@0 166
nuclear@0 167 static int get_option(const char *opt, enum opt_type type, void *valp)
nuclear@0 168 {
nuclear@0 169 switch(type) {
nuclear@0 170 case OTYPE_INT:
nuclear@0 171 return get_option_int(optdb, opt, valp);
nuclear@0 172 case OTYPE_FLOAT:
nuclear@0 173 return get_option_float(optdb, opt, valp);
nuclear@0 174 }
nuclear@0 175 return -1;
nuclear@0 176 }
nuclear@0 177
nuclear@7 178 static void translation(int eye, float *vec)
nuclear@0 179 {
nuclear@0 180 if(!hmd) {
nuclear@0 181 vec[0] = vec[1] = vec[2] = 0;
nuclear@9 182 return;
nuclear@0 183 }
nuclear@0 184
nuclear@0 185 pose[eye] = ovrHmd_GetEyePose(hmd, eye == VR_EYE_LEFT ? ovrEye_Left : ovrEye_Right);
nuclear@0 186 vec[0] = pose[eye].Position.x + eye_render_desc[eye].ViewAdjust.x;
nuclear@0 187 vec[1] = pose[eye].Position.y + eye_render_desc[eye].ViewAdjust.y;
nuclear@0 188 vec[2] = pose[eye].Position.z + eye_render_desc[eye].ViewAdjust.z;
nuclear@0 189 }
nuclear@0 190
nuclear@7 191 static void rotation(int eye, float *quat)
nuclear@0 192 {
nuclear@0 193 if(!hmd) {
nuclear@0 194 quat[0] = quat[1] = quat[2] = 0.0f;
nuclear@0 195 quat[3] = 1.0f;
nuclear@9 196 return;
nuclear@0 197 }
nuclear@0 198
nuclear@0 199 pose[eye] = ovrHmd_GetEyePose(hmd, eye == VR_EYE_LEFT ? ovrEye_Left : ovrEye_Right);
nuclear@0 200 quat[0] = pose[eye].Orientation.x;
nuclear@0 201 quat[1] = pose[eye].Orientation.y;
nuclear@0 202 quat[2] = pose[eye].Orientation.z;
nuclear@0 203 quat[3] = pose[eye].Orientation.w;
nuclear@0 204 }
nuclear@0 205
nuclear@0 206 static const float idmat[] = {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1};
nuclear@0 207
nuclear@0 208 static void proj_matrix(int eye, float znear, float zfar, float *mat)
nuclear@0 209 {
nuclear@0 210 int i, j;
nuclear@0 211 ovrMatrix4f vmat;
nuclear@0 212
nuclear@0 213 if(!hmd) {
nuclear@0 214 memcpy(mat, idmat, sizeof idmat);
nuclear@0 215 return;
nuclear@0 216 }
nuclear@0 217
nuclear@0 218 vmat = ovrMatrix4f_Projection(eye_render_desc[eye].Fov, znear, zfar, 1);
nuclear@0 219
nuclear@0 220 for(i=0; i<4; i++) {
nuclear@0 221 for(j=0; j<4; j++) {
nuclear@0 222 *mat++ = vmat.M[j][i];
nuclear@0 223 }
nuclear@0 224 }
nuclear@0 225 }
nuclear@0 226
nuclear@0 227 static int new_frame = 1;
nuclear@0 228
nuclear@0 229 static void begin(int eye)
nuclear@0 230 {
nuclear@0 231 if(!hmd) return;
nuclear@0 232
nuclear@0 233 if(!deferred_init_done) {
nuclear@0 234 deferred_init();
nuclear@0 235 }
nuclear@0 236
nuclear@0 237 if(new_frame) {
nuclear@0 238 ovrHmd_BeginFrame(hmd, 0);
nuclear@0 239 new_frame = 0;
nuclear@0 240 }
nuclear@0 241 }
nuclear@0 242
nuclear@0 243 static int present(void)
nuclear@0 244 {
nuclear@0 245 if(!hmd) return 0;
nuclear@0 246
nuclear@0 247 ovrHmd_EndFrame(hmd, pose, &eye_tex[0].Texture);
nuclear@0 248 new_frame = 1;
nuclear@0 249
nuclear@0 250 return 1;
nuclear@0 251 }
nuclear@0 252
nuclear@0 253 static void set_eye_texture(int eye, unsigned int tex, float umin, float vmin, float umax, float vmax)
nuclear@0 254 {
nuclear@0 255 ovrSizei texsz;
nuclear@0 256 ovrRecti rect;
nuclear@0 257
nuclear@0 258 glBindTexture(GL_TEXTURE_2D, tex);
nuclear@0 259 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &texsz.w);
nuclear@0 260 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &texsz.h);
nuclear@0 261
nuclear@0 262 rect.Pos.x = (int)(umin * texsz.w);
nuclear@0 263 rect.Pos.y = (int)((vmin + 1.0 - vmax) * texsz.h);
nuclear@0 264 rect.Size.w = (int)((umax - umin) * texsz.w);
nuclear@0 265 rect.Size.h = (int)((vmax - vmin) * texsz.h);
nuclear@0 266
nuclear@0 267 eye_tex[eye].OGL.Header.API = ovrRenderAPI_OpenGL;
nuclear@0 268 eye_tex[eye].OGL.Header.TextureSize = texsz;
nuclear@0 269 eye_tex[eye].OGL.Header.RenderViewport = rect;
nuclear@0 270 eye_tex[eye].OGL.TexId = tex;
nuclear@0 271 }
nuclear@0 272
nuclear@0 273 static void recenter(void)
nuclear@0 274 {
nuclear@0 275 if(hmd) {
nuclear@0 276 ovrHmd_RecenterPose(hmd);
nuclear@0 277 }
nuclear@0 278 }
nuclear@0 279
nuclear@0 280 struct vr_module *vr_module_libovr(void)
nuclear@0 281 {
nuclear@0 282 static struct vr_module m;
nuclear@0 283
nuclear@0 284 if(!m.init) {
nuclear@0 285 m.name = "libovr";
nuclear@0 286 m.init = init;
nuclear@0 287 m.cleanup = cleanup;
nuclear@0 288 m.set_option = set_option;
nuclear@0 289 m.get_option = get_option;
nuclear@0 290 m.translation = translation;
nuclear@0 291 m.rotation = rotation;
nuclear@0 292 m.proj_matrix = proj_matrix;
nuclear@0 293 m.begin = begin;
nuclear@0 294 m.present = present;
nuclear@0 295 m.set_eye_texture = set_eye_texture;
nuclear@0 296 m.recenter = recenter;
nuclear@0 297 }
nuclear@0 298 return &m;
nuclear@0 299 }
nuclear@0 300
nuclear@0 301 #else /* no libovr */
nuclear@0 302
nuclear@0 303 static int init(void)
nuclear@0 304 {
nuclear@0 305 return -1;
nuclear@0 306 }
nuclear@0 307
nuclear@0 308 struct vr_module *vr_module_libovr(void)
nuclear@0 309 {
nuclear@0 310 static struct vr_module m;
nuclear@0 311
nuclear@0 312 if(!m.init) {
nuclear@0 313 m.name = "libovr";
nuclear@0 314 m.init = init;
nuclear@0 315 }
nuclear@0 316 return &m;
nuclear@0 317 }
nuclear@0 318
nuclear@0 319 #endif /* USE_LIBOVR */