| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #include <dlfcn.h> |
| 25 | #include "SDL.h" |
| 26 | #include "SDL_ph_gl.h" |
| 27 | |
| 28 | #if SDL_VIDEO_OPENGL |
| 29 | |
| 30 | #if (_NTO_VERSION >= 630) |
| 31 | /* PhotonGL functions */ |
| 32 | GLPH_DECLARE_FUNCS; |
| 33 | #endif /* 6.3.0 */ |
| 34 | |
| 35 | #if (_NTO_VERSION < 630) |
| 36 | void ph_GL_SwapBuffers(_THIS) |
| 37 | { |
| 38 | PgSetRegion(PtWidgetRid(window)); |
| 39 | PdOpenGLContextSwapBuffers(oglctx); |
| 40 | } |
| 41 | #else |
| 42 | void ph_GL_SwapBuffers(_THIS) |
| 43 | { |
| 44 | qnxgl_swap_buffers(oglbuffers); |
| 45 | } |
| 46 | #endif /* 6.3.0 */ |
| 47 | |
| 48 | int ph_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) |
| 49 | { |
| 50 | switch (attrib) |
| 51 | { |
| 52 | case SDL_GL_DOUBLEBUFFER: |
| 53 | *value=this->gl_config.double_buffer; |
| 54 | break; |
| 55 | case SDL_GL_STENCIL_SIZE: |
| 56 | *value=this->gl_config.stencil_size; |
| 57 | break; |
| 58 | case SDL_GL_DEPTH_SIZE: |
| 59 | *value=this->gl_config.depth_size; |
| 60 | break; |
| 61 | #if (_NTO_VERSION >= 630) |
| 62 | case SDL_GL_RED_SIZE: |
| 63 | *value=this->gl_config.red_size; |
| 64 | break; |
| 65 | case SDL_GL_GREEN_SIZE: |
| 66 | *value=this->gl_config.green_size; |
| 67 | break; |
| 68 | case SDL_GL_BLUE_SIZE: |
| 69 | *value=this->gl_config.blue_size; |
| 70 | break; |
| 71 | case SDL_GL_ALPHA_SIZE: |
| 72 | *value=this->gl_config.alpha_size; |
| 73 | break; |
| 74 | case SDL_GL_ACCUM_RED_SIZE: |
| 75 | *value=this->gl_config.accum_red_size; |
| 76 | break; |
| 77 | case SDL_GL_ACCUM_GREEN_SIZE: |
| 78 | *value=this->gl_config.accum_green_size; |
| 79 | break; |
| 80 | case SDL_GL_ACCUM_BLUE_SIZE: |
| 81 | *value=this->gl_config.accum_blue_size; |
| 82 | break; |
| 83 | case SDL_GL_ACCUM_ALPHA_SIZE: |
| 84 | *value=this->gl_config.accum_alpha_size; |
| 85 | break; |
| 86 | case SDL_GL_STEREO: |
| 87 | *value=this->gl_config.stereo; |
| 88 | break; |
| 89 | #endif /* 6.3.0 */ |
| 90 | default: |
| 91 | *value=0; |
| 92 | return(-1); |
| 93 | } |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | #if (_NTO_VERSION < 630) |
| 98 | int ph_GL_LoadLibrary(_THIS, const char* path) |
| 99 | { |
| 100 | /* if code compiled with SDL_VIDEO_OPENGL, that mean that library already linked */ |
| 101 | this->gl_config.driver_loaded = 1; |
| 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | #else |
| 106 | int ph_GL_LoadLibrary(_THIS, const char* path) |
| 107 | { |
| 108 | void* handle; |
| 109 | int dlopen_flags=RTLD_WORLD | RTLD_GROUP; |
| 110 | |
| 111 | if (this->gl_config.dll_handle!=NULL) |
| 112 | { |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | handle = dlopen(path, dlopen_flags); |
| 117 | |
| 118 | if (handle==NULL) |
| 119 | { |
| 120 | SDL_SetError("ph_GL_LoadLibrary(): Could not load OpenGL library"); |
| 121 | return -1; |
| 122 | } |
| 123 | |
| 124 | this->gl_config.dll_handle = handle; |
| 125 | this->gl_config.driver_loaded = 1; |
| 126 | |
| 127 | SDL_strlcpy(this->gl_config.driver_path, path, SDL_arraysize(this->gl_config.driver_path)); |
| 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | #endif /* 6.3.0 */ |
| 132 | |
| 133 | #if (_NTO_VERSION < 630) |
| 134 | void* ph_GL_GetProcAddress(_THIS, const char* proc) |
| 135 | { |
| 136 | return NULL; |
| 137 | } |
| 138 | #else |
| 139 | void* ph_GL_GetProcAddress(_THIS, const char* proc) |
| 140 | { |
| 141 | void* function; |
| 142 | |
| 143 | if (this->gl_config.dll_handle==NULL) |
| 144 | { |
| 145 | ph_GL_LoadLibrary(this, DEFAULT_OPENGL); |
| 146 | if (this->gl_config.dll_handle==NULL) |
| 147 | { |
| 148 | return NULL; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | function=qnxgl_get_func(proc, oglctx, 0); |
| 153 | if (function==NULL) |
| 154 | { |
| 155 | function=dlsym(this->gl_config.dll_handle, proc); |
| 156 | } |
| 157 | |
| 158 | return function; |
| 159 | } |
| 160 | #endif /* 6.3.0 */ |
| 161 | |
| 162 | #if (_NTO_VERSION < 630) |
| 163 | int ph_GL_MakeCurrent(_THIS) |
| 164 | { |
| 165 | PgSetRegion(PtWidgetRid(window)); |
| 166 | |
| 167 | if (oglctx!=NULL) |
| 168 | { |
| 169 | PhDCSetCurrent(oglctx); |
| 170 | } |
| 171 | |
| 172 | return 0; |
| 173 | } |
| 174 | #else |
| 175 | int ph_GL_MakeCurrent(_THIS) |
| 176 | { |
| 177 | PgSetRegion(PtWidgetRid(window)); |
| 178 | |
| 179 | if (oglctx!=NULL) |
| 180 | { |
| 181 | if (qnxgl_set_current(oglctx) == -1) |
| 182 | { |
| 183 | return -1; |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | #endif /* 6.3.0 */ |
| 190 | |
| 191 | #if (_NTO_VERSION < 630) |
| 192 | |
| 193 | /* This code is actual for the Photon3D Runtime which was available prior to 6.3 only */ |
| 194 | |
| 195 | int ph_SetupOpenGLContext(_THIS, int width, int height, int bpp, Uint32 flags) |
| 196 | { |
| 197 | PhDim_t dim; |
| 198 | uint64_t OGLAttrib[PH_OGL_MAX_ATTRIBS]; |
| 199 | int exposepost=0; |
| 200 | int OGLargc; |
| 201 | |
| 202 | dim.w=width; |
| 203 | dim.h=height; |
| 204 | |
| 205 | if ((oglctx!=NULL) && (oglflags==flags) && (oglbpp==bpp)) |
| 206 | { |
| 207 | PdOpenGLContextResize(oglctx, &dim); |
| 208 | PhDCSetCurrent(oglctx); |
| 209 | return 0; |
| 210 | } |
| 211 | else |
| 212 | { |
| 213 | if (oglctx!=NULL) |
| 214 | { |
| 215 | PhDCSetCurrent(NULL); |
| 216 | PhDCRelease(oglctx); |
| 217 | oglctx=NULL; |
| 218 | exposepost=1; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | OGLargc=0; |
| 223 | if (this->gl_config.depth_size) |
| 224 | { |
| 225 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_DEPTH_BITS; |
| 226 | OGLAttrib[OGLargc++]=this->gl_config.depth_size; |
| 227 | } |
| 228 | if (this->gl_config.stencil_size) |
| 229 | { |
| 230 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_STENCIL_BITS; |
| 231 | OGLAttrib[OGLargc++]=this->gl_config.stencil_size; |
| 232 | } |
| 233 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FORCE_SW; |
| 234 | if (flags & SDL_FULLSCREEN) |
| 235 | { |
| 236 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FULLSCREEN; |
| 237 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_DIRECT; |
| 238 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FULLSCREEN_BEST; |
| 239 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FULLSCREEN_CENTER; |
| 240 | } |
| 241 | OGLAttrib[OGLargc++]=PHOGL_ATTRIB_NONE; |
| 242 | |
| 243 | if (this->gl_config.double_buffer) |
| 244 | { |
| 245 | oglctx=PdCreateOpenGLContext(2, &dim, 0, OGLAttrib); |
| 246 | } |
| 247 | else |
| 248 | { |
| 249 | oglctx=PdCreateOpenGLContext(1, &dim, 0, OGLAttrib); |
| 250 | } |
| 251 | |
| 252 | if (oglctx==NULL) |
| 253 | { |
| 254 | SDL_SetError("ph_SetupOpenGLContext(): cannot create OpenGL context !\n"); |
| 255 | return -1; |
| 256 | } |
| 257 | |
| 258 | PhDCSetCurrent(oglctx); |
| 259 | |
| 260 | PtFlush(); |
| 261 | |
| 262 | oglflags=flags; |
| 263 | oglbpp=bpp; |
| 264 | |
| 265 | if (exposepost!=0) |
| 266 | { |
| 267 | /* OpenGL context has been recreated, so report about this fact */ |
| 268 | SDL_PrivateExpose(); |
| 269 | } |
| 270 | |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | #else /* _NTO_VERSION */ |
| 275 | |
| 276 | /* This code is actual for the built-in PhGL support, which became available since 6.3 */ |
| 277 | |
| 278 | int ph_SetupOpenGLContext(_THIS, int width, int height, int bpp, Uint32 flags) |
| 279 | { |
| 280 | qnxgl_buf_attrib_t qnxgl_attribs[PH_OGL_MAX_ATTRIBS]; |
| 281 | qnxgl_buf_attrib_t* qnxgl_attribs_slide; |
| 282 | int num_interfaces = 0; |
| 283 | int num_buffers = 0; |
| 284 | |
| 285 | /* Initialize the OpenGL subsystem */ |
| 286 | |
| 287 | num_interfaces = qnxgl_init(NULL, NULL, 0); |
| 288 | |
| 289 | if (num_interfaces < 0) |
| 290 | { |
| 291 | SDL_SetError("ph_SetupOpenGLContext(): cannot initialize OpenGL subsystem !\n"); |
| 292 | return -1; |
| 293 | } |
| 294 | if (num_interfaces == 0) |
| 295 | { |
| 296 | SDL_SetError("ph_SetupOpenGLContext(): there are no available OpenGL renderers was found !\n"); |
| 297 | return -1; |
| 298 | } |
| 299 | |
| 300 | /* Driver is linked */ |
| 301 | this->gl_config.driver_loaded=1; |
| 302 | |
| 303 | /* Initialize the OpenGL context attributes */ |
| 304 | qnxgl_attribs_slide=qnxgl_attribs; |
| 305 | |
| 306 | /* Depth size */ |
| 307 | if (this->gl_config.depth_size) |
| 308 | { |
| 309 | fprintf(stderr, "setted depth size %d\n", this->gl_config.depth_size); |
| 310 | qnxgl_attribs_slide = qnxgl_attrib_set_depth(qnxgl_attribs_slide, this->gl_config.depth_size); |
| 311 | } |
| 312 | |
| 313 | /* Stencil size */ |
| 314 | if (this->gl_config.stencil_size) |
| 315 | { |
| 316 | qnxgl_attribs_slide = qnxgl_attrib_set_stencil(qnxgl_attribs_slide, this->gl_config.stencil_size); |
| 317 | } |
| 318 | |
| 319 | /* The sum of the accum bits of each channel */ |
| 320 | if ((this->gl_config.accum_red_size != 0) && (this->gl_config.accum_blue_size != 0) && |
| 321 | (this->gl_config.accum_green_size != 0)) |
| 322 | { |
| 323 | qnxgl_attribs_slide = qnxgl_attrib_set_accum(qnxgl_attribs_slide, |
| 324 | this->gl_config.accum_red_size + this->gl_config.accum_blue_size + |
| 325 | this->gl_config.accum_green_size + this->gl_config.accum_alpha_size); |
| 326 | } |
| 327 | |
| 328 | /* Stereo mode */ |
| 329 | if (this->gl_config.stereo) |
| 330 | { |
| 331 | qnxgl_attribs_slide = qnxgl_attrib_set_stereo(qnxgl_attribs_slide); |
| 332 | } |
| 333 | |
| 334 | /* Fullscreen mode */ |
| 335 | if ((flags & SDL_FULLSCREEN) == SDL_FULLSCREEN) |
| 336 | { |
| 337 | qnxgl_attribs_slide = qnxgl_attrib_set_hint_fullscreen(qnxgl_attribs_slide); |
| 338 | } |
| 339 | |
| 340 | /* Double buffering mode */ |
| 341 | if (this->gl_config.double_buffer) |
| 342 | { |
| 343 | num_buffers=2; |
| 344 | } |
| 345 | else |
| 346 | { |
| 347 | num_buffers=1; |
| 348 | } |
| 349 | |
| 350 | /* Loading the function pointers so we can use the extensions */ |
| 351 | GLPH_LOAD_FUNCS_GC(oglctx); |
| 352 | |
| 353 | /* Set the buffers region to be that of our window's region */ |
| 354 | qnxgl_attribs_slide = glph_attrib_set_region(qnxgl_attribs_slide, PtWidgetRid(window)); |
| 355 | |
| 356 | /* End of the attributes array */ |
| 357 | qnxgl_attribs_slide = qnxgl_attrib_set_end(qnxgl_attribs_slide); |
| 358 | |
| 359 | /* Create the buffers with the specified color model */ |
| 360 | fprintf(stderr, "ARGB: %d, %d, %d, %d\n", this->gl_config.alpha_size, this->gl_config.red_size, this->gl_config.green_size, this->gl_config.blue_size); |
| 361 | oglbuffers = qnxgl_buffers_create( |
| 362 | QNXGL_FORMAT_BEST_RGB, |
| 363 | /* __QNXGL_BUILD_FORMAT(0, __QNXGL_COLOR_MODEL_RGB, this->gl_config.alpha_size, |
| 364 | this->gl_config.red_size, this->gl_config.green_size, this->gl_config.blue_size), */ |
| 365 | num_buffers, width, height, qnxgl_attribs, -1); |
| 366 | |
| 367 | |
| 368 | if (oglbuffers == NULL) |
| 369 | { |
| 370 | SDL_SetError("ph_SetupOpenGLContext(): failed to create OpenGL buffers !\n"); |
| 371 | qnxgl_finish(); |
| 372 | return -1; |
| 373 | } |
| 374 | |
| 375 | /* Create a QNXGL context for the previously created buffer */ |
| 376 | oglctx = qnxgl_context_create(oglbuffers, NULL); |
| 377 | |
| 378 | if (oglctx == NULL) |
| 379 | { |
| 380 | SDL_SetError("ph_SetupOpenGLContext(): failed to create OpenGL context !\n"); |
| 381 | qnxgl_buffers_destroy(oglbuffers); |
| 382 | qnxgl_finish(); |
| 383 | return -1; |
| 384 | } |
| 385 | |
| 386 | /* Attempt to make the context current so we can use OpenGL commands */ |
| 387 | if (qnxgl_set_current(oglctx) == -1) |
| 388 | { |
| 389 | SDL_SetError("ph_SetupOpenGLContext(): failed to make the OpenGL context current !\n"); |
| 390 | qnxgl_context_destroy(oglctx); |
| 391 | qnxgl_buffers_destroy(oglbuffers); |
| 392 | qnxgl_finish(); |
| 393 | return -1; |
| 394 | } |
| 395 | |
| 396 | PtFlush(); |
| 397 | |
| 398 | oglflags=flags; |
| 399 | oglbpp=bpp; |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | #endif /* _NTO_VERSION */ |
| 405 | |
| 406 | #endif /* SDL_VIDEO_OPENGL */ |