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 "state_tracker/st_context.h" 41 42 GLboolean 43 dri_create_context(gl_api api, const struct gl_config * visual, 44 __DRIcontext * cPriv, 45 unsigned major_version, 46 unsigned minor_version, 47 uint32_t flags, 48 bool notify_reset, 49 unsigned *error, 50 void *sharedContextPrivate) 51 { 52 __DRIscreen *sPriv = cPriv->driScreenPriv; 53 struct dri_screen *screen = dri_screen(sPriv); 54 struct st_api *stapi = screen->st_api; 55 struct dri_context *ctx = NULL; 56 struct st_context_iface *st_share = NULL; 57 struct st_context_attribs attribs; 58 enum st_context_error ctx_err = 0; 59 unsigned allowed_flags = __DRI_CTX_FLAG_DEBUG | 60 __DRI_CTX_FLAG_FORWARD_COMPATIBLE; 61 62 if (screen->has_reset_status_query) 63 allowed_flags |= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS; 64 65 if (flags & ~allowed_flags) { 66 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; 67 goto fail; 68 } 69 70 if (!screen->has_reset_status_query && notify_reset) { 71 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; 72 goto fail; 73 } 74 75 memset(&attribs, 0, sizeof(attribs)); 76 switch (api) { 77 case API_OPENGLES: 78 attribs.profile = ST_PROFILE_OPENGL_ES1; 79 break; 80 case API_OPENGLES2: 81 attribs.profile = ST_PROFILE_OPENGL_ES2; 82 break; 83 case API_OPENGL_COMPAT: 84 case API_OPENGL_CORE: 85 attribs.profile = api == API_OPENGL_COMPAT ? ST_PROFILE_DEFAULT 86 : ST_PROFILE_OPENGL_CORE; 87 attribs.major = major_version; 88 attribs.minor = minor_version; 89 90 if ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) 91 attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE; 92 break; 93 default: 94 *error = __DRI_CTX_ERROR_BAD_API; 95 goto fail; 96 } 97 98 if ((flags & __DRI_CTX_FLAG_DEBUG) != 0) 99 attribs.flags |= ST_CONTEXT_FLAG_DEBUG; 100 101 if (flags & __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS) 102 attribs.flags |= ST_CONTEXT_FLAG_ROBUST_ACCESS; 103 104 if (notify_reset) 105 attribs.flags |= ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED; 106 107 if (sharedContextPrivate) { 108 st_share = ((struct dri_context *)sharedContextPrivate)->st; 109 } 110 111 ctx = CALLOC_STRUCT(dri_context); 112 if (ctx == NULL) { 113 *error = __DRI_CTX_ERROR_NO_MEMORY; 114 goto fail; 115 } 116 117 cPriv->driverPrivate = ctx; 118 ctx->cPriv = cPriv; 119 ctx->sPriv = sPriv; 120 121 attribs.options = screen->options; 122 dri_fill_st_visual(&attribs.visual, screen, visual); 123 ctx->st = stapi->create_context(stapi, &screen->base, &attribs, &ctx_err, 124 st_share); 125 if (ctx->st == NULL) { 126 switch (ctx_err) { 127 case ST_CONTEXT_SUCCESS: 128 *error = __DRI_CTX_ERROR_SUCCESS; 129 break; 130 case ST_CONTEXT_ERROR_NO_MEMORY: 131 *error = __DRI_CTX_ERROR_NO_MEMORY; 132 break; 133 case ST_CONTEXT_ERROR_BAD_API: 134 *error = __DRI_CTX_ERROR_BAD_API; 135 break; 136 case ST_CONTEXT_ERROR_BAD_VERSION: 137 *error = __DRI_CTX_ERROR_BAD_VERSION; 138 break; 139 case ST_CONTEXT_ERROR_BAD_FLAG: 140 *error = __DRI_CTX_ERROR_BAD_FLAG; 141 break; 142 case ST_CONTEXT_ERROR_UNKNOWN_ATTRIBUTE: 143 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; 144 break; 145 case ST_CONTEXT_ERROR_UNKNOWN_FLAG: 146 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; 147 break; 148 } 149 goto fail; 150 } 151 ctx->st->st_manager_private = (void *) ctx; 152 ctx->stapi = stapi; 153 154 if (ctx->st->cso_context) { 155 ctx->pp = pp_init(ctx->st->pipe, screen->pp_enabled, ctx->st->cso_context); 156 ctx->hud = hud_create(ctx->st->pipe, ctx->st->cso_context); 157 } 158 159 *error = __DRI_CTX_ERROR_SUCCESS; 160 return GL_TRUE; 161 162 fail: 163 if (ctx && ctx->st) 164 ctx->st->destroy(ctx->st); 165 166 free(ctx); 167 return GL_FALSE; 168 } 169 170 void 171 dri_destroy_context(__DRIcontext * cPriv) 172 { 173 struct dri_context *ctx = dri_context(cPriv); 174 175 if (ctx->hud) { 176 hud_destroy(ctx->hud); 177 } 178 179 if (ctx->pp) 180 pp_free(ctx->pp); 181 182 /* No particular reason to wait for command completion before 183 * destroying a context, but we flush the context here 184 * to avoid having to add code elsewhere to cope with flushing a 185 * partially destroyed context. 186 */ 187 ctx->st->flush(ctx->st, 0, NULL); 188 ctx->st->destroy(ctx->st); 189 free(ctx); 190 } 191 192 GLboolean 193 dri_unbind_context(__DRIcontext * cPriv) 194 { 195 /* dri_util.c ensures cPriv is not null */ 196 struct dri_screen *screen = dri_screen(cPriv->driScreenPriv); 197 struct dri_context *ctx = dri_context(cPriv); 198 struct st_api *stapi = screen->st_api; 199 200 if (--ctx->bind_count == 0) { 201 if (ctx->st == ctx->stapi->get_current(ctx->stapi)) { 202 /* For conformance, unbind is supposed to flush the context. 203 * However, if we do it here we might end up flushing a partially 204 * destroyed context. Instead, we flush in dri_make_current and 205 * in dri_destroy_context which should cover all the cases. 206 */ 207 stapi->make_current(stapi, NULL, NULL, NULL); 208 } 209 } 210 211 return GL_TRUE; 212 } 213 214 GLboolean 215 dri_make_current(__DRIcontext * cPriv, 216 __DRIdrawable * driDrawPriv, 217 __DRIdrawable * driReadPriv) 218 { 219 /* dri_util.c ensures cPriv is not null */ 220 struct dri_context *ctx = dri_context(cPriv); 221 struct dri_drawable *draw = dri_drawable(driDrawPriv); 222 struct dri_drawable *read = dri_drawable(driReadPriv); 223 struct st_context_iface *old_st = ctx->stapi->get_current(ctx->stapi); 224 225 /* Flush the old context here so we don't have to flush on unbind() */ 226 if (old_st && old_st != ctx->st) 227 old_st->flush(old_st, ST_FLUSH_FRONT, NULL); 228 229 ++ctx->bind_count; 230 231 if (!draw && !read) 232 return ctx->stapi->make_current(ctx->stapi, ctx->st, NULL, NULL); 233 else if (!draw || !read) 234 return GL_FALSE; 235 236 if (ctx->dPriv != driDrawPriv) { 237 ctx->dPriv = driDrawPriv; 238 draw->texture_stamp = driDrawPriv->lastStamp - 1; 239 } 240 if (ctx->rPriv != driReadPriv) { 241 ctx->rPriv = driReadPriv; 242 read->texture_stamp = driReadPriv->lastStamp - 1; 243 } 244 245 ctx->stapi->make_current(ctx->stapi, ctx->st, &draw->base, &read->base); 246 247 /* This is ok to call here. If they are already init, it's a no-op. */ 248 if (ctx->pp && draw->textures[ST_ATTACHMENT_BACK_LEFT]) 249 pp_init_fbos(ctx->pp, draw->textures[ST_ATTACHMENT_BACK_LEFT]->width0, 250 draw->textures[ST_ATTACHMENT_BACK_LEFT]->height0); 251 252 return GL_TRUE; 253 } 254 255 struct dri_context * 256 dri_get_current(__DRIscreen *sPriv) 257 { 258 struct dri_screen *screen = dri_screen(sPriv); 259 struct st_api *stapi = screen->st_api; 260 struct st_context_iface *st; 261 262 st = stapi->get_current(stapi); 263 264 return (struct dri_context *) st ? st->st_manager_private : NULL; 265 } 266 267 /* vim: set sw=3 ts=8 sts=3 expandtab: */ 268