1 /************************************************************************** 2 * 3 * Copyright 2009, VMware, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 /* 28 * Author: Keith Whitwell <keithw (at) vmware.com> 29 * Author: Jakob Bornecrantz <wallbraker (at) gmail.com> 30 */ 31 32 #include "utils.h" 33 34 #include "dri_screen.h" 35 #include "dri_drawable.h" 36 #include "dri_context.h" 37 #include "state_tracker/drm_driver.h" 38 39 #include "pipe/p_context.h" 40 #include "pipe-loader/pipe_loader.h" 41 #include "state_tracker/st_context.h" 42 43 GLboolean 44 dri_create_context(gl_api api, const struct gl_config * visual, 45 __DRIcontext * cPriv, 46 const struct __DriverContextConfig *ctx_config, 47 unsigned *error, 48 void *sharedContextPrivate) 49 { 50 __DRIscreen *sPriv = cPriv->driScreenPriv; 51 struct dri_screen *screen = dri_screen(sPriv); 52 struct st_api *stapi = screen->st_api; 53 struct dri_context *ctx = NULL; 54 struct st_context_iface *st_share = NULL; 55 struct st_context_attribs attribs; 56 enum st_context_error ctx_err = 0; 57 unsigned allowed_flags = __DRI_CTX_FLAG_DEBUG | 58 __DRI_CTX_FLAG_FORWARD_COMPATIBLE | 59 __DRI_CTX_FLAG_NO_ERROR; 60 unsigned allowed_attribs = 61 __DRIVER_CONTEXT_ATTRIB_PRIORITY | 62 __DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR; 63 const __DRIbackgroundCallableExtension *backgroundCallable = 64 screen->sPriv->dri2.backgroundCallable; 65 66 if (screen->has_reset_status_query) { 67 allowed_flags |= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS; 68 allowed_attribs |= __DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY; 69 } 70 71 if (ctx_config->flags & ~allowed_flags) { 72 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; 73 goto fail; 74 } 75 76 if (ctx_config->attribute_mask & ~allowed_attribs) { 77 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; 78 goto fail; 79 } 80 81 memset(&attribs, 0, sizeof(attribs)); 82 switch (api) { 83 case API_OPENGLES: 84 attribs.profile = ST_PROFILE_OPENGL_ES1; 85 break; 86 case API_OPENGLES2: 87 attribs.profile = ST_PROFILE_OPENGL_ES2; 88 break; 89 case API_OPENGL_COMPAT: 90 case API_OPENGL_CORE: 91 attribs.profile = api == API_OPENGL_COMPAT ? ST_PROFILE_DEFAULT 92 : ST_PROFILE_OPENGL_CORE; 93 attribs.major = ctx_config->major_version; 94 attribs.minor = ctx_config->minor_version; 95 96 if ((ctx_config->flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) 97 attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE; 98 break; 99 default: 100 *error = __DRI_CTX_ERROR_BAD_API; 101 goto fail; 102 } 103 104 if ((ctx_config->flags & __DRI_CTX_FLAG_DEBUG) != 0) 105 attribs.flags |= ST_CONTEXT_FLAG_DEBUG; 106 107 if (ctx_config->flags & __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS) 108 attribs.flags |= ST_CONTEXT_FLAG_ROBUST_ACCESS; 109 110 if (ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY) 111 if (ctx_config->reset_strategy != __DRI_CTX_RESET_NO_NOTIFICATION) 112 attribs.flags |= ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED; 113 114 if (ctx_config->flags & __DRI_CTX_FLAG_NO_ERROR) 115 attribs.flags |= ST_CONTEXT_FLAG_NO_ERROR; 116 117 if (ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_PRIORITY) { 118 switch (ctx_config->priority) { 119 case __DRI_CTX_PRIORITY_LOW: 120 attribs.flags |= ST_CONTEXT_FLAG_LOW_PRIORITY; 121 break; 122 case __DRI_CTX_PRIORITY_HIGH: 123 attribs.flags |= ST_CONTEXT_FLAG_HIGH_PRIORITY; 124 break; 125 default: 126 break; 127 } 128 } 129 130 if ((ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR) 131 && (ctx_config->release_behavior == __DRI_CTX_RELEASE_BEHAVIOR_NONE)) 132 attribs.flags |= ST_CONTEXT_FLAG_RELEASE_NONE; 133 134 struct dri_context *share_ctx = NULL; 135 if (sharedContextPrivate) { 136 share_ctx = (struct dri_context *)sharedContextPrivate; 137 st_share = share_ctx->st; 138 } 139 140 ctx = CALLOC_STRUCT(dri_context); 141 if (ctx == NULL) { 142 *error = __DRI_CTX_ERROR_NO_MEMORY; 143 goto fail; 144 } 145 146 cPriv->driverPrivate = ctx; 147 ctx->cPriv = cPriv; 148 ctx->sPriv = sPriv; 149 150 if (driQueryOptionb(&screen->dev->option_cache, "mesa_no_error")) 151 attribs.flags |= ST_CONTEXT_FLAG_NO_ERROR; 152 153 attribs.options = screen->options; 154 dri_fill_st_visual(&attribs.visual, screen, visual); 155 ctx->st = stapi->create_context(stapi, &screen->base, &attribs, &ctx_err, 156 st_share); 157 if (ctx->st == NULL) { 158 switch (ctx_err) { 159 case ST_CONTEXT_SUCCESS: 160 *error = __DRI_CTX_ERROR_SUCCESS; 161 break; 162 case ST_CONTEXT_ERROR_NO_MEMORY: 163 *error = __DRI_CTX_ERROR_NO_MEMORY; 164 break; 165 case ST_CONTEXT_ERROR_BAD_API: 166 *error = __DRI_CTX_ERROR_BAD_API; 167 break; 168 case ST_CONTEXT_ERROR_BAD_VERSION: 169 *error = __DRI_CTX_ERROR_BAD_VERSION; 170 break; 171 case ST_CONTEXT_ERROR_BAD_FLAG: 172 *error = __DRI_CTX_ERROR_BAD_FLAG; 173 break; 174 case ST_CONTEXT_ERROR_UNKNOWN_ATTRIBUTE: 175 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; 176 break; 177 case ST_CONTEXT_ERROR_UNKNOWN_FLAG: 178 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; 179 break; 180 } 181 goto fail; 182 } 183 ctx->st->st_manager_private = (void *) ctx; 184 ctx->stapi = stapi; 185 186 if (ctx->st->cso_context) { 187 ctx->pp = pp_init(ctx->st->pipe, screen->pp_enabled, ctx->st->cso_context); 188 ctx->hud = hud_create(ctx->st->cso_context, 189 share_ctx ? share_ctx->hud : NULL); 190 } 191 192 /* Do this last. */ 193 if (ctx->st->start_thread && 194 driQueryOptionb(&screen->dev->option_cache, "mesa_glthread")) { 195 196 if (backgroundCallable && backgroundCallable->base.version >= 2 && 197 backgroundCallable->isThreadSafe) { 198 199 if (backgroundCallable->isThreadSafe(cPriv->loaderPrivate)) 200 ctx->st->start_thread(ctx->st); 201 else 202 fprintf(stderr, "dri_create_context: glthread isn't thread safe " 203 "- missing call XInitThreads\n"); 204 } else { 205 fprintf(stderr, "dri_create_context: requested glthread but driver " 206 "is missing backgroundCallable V2 extension\n"); 207 } 208 } 209 210 *error = __DRI_CTX_ERROR_SUCCESS; 211 return GL_TRUE; 212 213 fail: 214 if (ctx && ctx->st) 215 ctx->st->destroy(ctx->st); 216 217 free(ctx); 218 return GL_FALSE; 219 } 220 221 void 222 dri_destroy_context(__DRIcontext * cPriv) 223 { 224 struct dri_context *ctx = dri_context(cPriv); 225 226 if (ctx->hud) { 227 hud_destroy(ctx->hud, ctx->st->cso_context); 228 } 229 230 if (ctx->pp) 231 pp_free(ctx->pp); 232 233 /* No particular reason to wait for command completion before 234 * destroying a context, but we flush the context here 235 * to avoid having to add code elsewhere to cope with flushing a 236 * partially destroyed context. 237 */ 238 ctx->st->flush(ctx->st, 0, NULL); 239 ctx->st->destroy(ctx->st); 240 free(ctx); 241 } 242 243 /* This is called inside MakeCurrent to unbind the context. */ 244 GLboolean 245 dri_unbind_context(__DRIcontext * cPriv) 246 { 247 /* dri_util.c ensures cPriv is not null */ 248 struct dri_screen *screen = dri_screen(cPriv->driScreenPriv); 249 struct dri_context *ctx = dri_context(cPriv); 250 struct st_context_iface *st = ctx->st; 251 struct st_api *stapi = screen->st_api; 252 253 if (--ctx->bind_count == 0) { 254 if (st == stapi->get_current(stapi)) { 255 if (st->thread_finish) 256 st->thread_finish(st); 257 258 /* Record HUD queries for the duration the context was "current". */ 259 if (ctx->hud) 260 hud_record_only(ctx->hud, st->pipe); 261 262 stapi->make_current(stapi, NULL, NULL, NULL); 263 } 264 } 265 266 return GL_TRUE; 267 } 268 269 GLboolean 270 dri_make_current(__DRIcontext * cPriv, 271 __DRIdrawable * driDrawPriv, 272 __DRIdrawable * driReadPriv) 273 { 274 /* dri_util.c ensures cPriv is not null */ 275 struct dri_context *ctx = dri_context(cPriv); 276 struct dri_drawable *draw = dri_drawable(driDrawPriv); 277 struct dri_drawable *read = dri_drawable(driReadPriv); 278 279 ++ctx->bind_count; 280 281 if (!draw && !read) 282 return ctx->stapi->make_current(ctx->stapi, ctx->st, NULL, NULL); 283 else if (!draw || !read) 284 return GL_FALSE; 285 286 if (ctx->dPriv != driDrawPriv) { 287 ctx->dPriv = driDrawPriv; 288 draw->texture_stamp = driDrawPriv->lastStamp - 1; 289 } 290 if (ctx->rPriv != driReadPriv) { 291 ctx->rPriv = driReadPriv; 292 read->texture_stamp = driReadPriv->lastStamp - 1; 293 } 294 295 ctx->stapi->make_current(ctx->stapi, ctx->st, &draw->base, &read->base); 296 297 /* This is ok to call here. If they are already init, it's a no-op. */ 298 if (ctx->pp && draw->textures[ST_ATTACHMENT_BACK_LEFT]) 299 pp_init_fbos(ctx->pp, draw->textures[ST_ATTACHMENT_BACK_LEFT]->width0, 300 draw->textures[ST_ATTACHMENT_BACK_LEFT]->height0); 301 302 return GL_TRUE; 303 } 304 305 struct dri_context * 306 dri_get_current(__DRIscreen *sPriv) 307 { 308 struct dri_screen *screen = dri_screen(sPriv); 309 struct st_api *stapi = screen->st_api; 310 struct st_context_iface *st; 311 312 st = stapi->get_current(stapi); 313 314 return (struct dri_context *) st ? st->st_manager_private : NULL; 315 } 316 317 /* vim: set sw=3 ts=8 sts=3 expandtab: */ 318