vg_manager.c revision ac8fdbc1c723afb19eeaba5457ba78d0bf33b8d4
1/* 2 * Mesa 3-D graphics library 3 * Version: 7.9 4 * 5 * Copyright 2009 VMware, Inc. All Rights Reserved. 6 * Copyright (C) 2010 LunarG Inc. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included 16 * in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 24 * DEALINGS IN THE SOFTWARE. 25 * 26 * Authors: 27 * Chia-I Wu <olv@lunarg.com> 28 */ 29 30#include "state_tracker/st_api.h" 31 32#include "pipe/p_context.h" 33#include "pipe/p_screen.h" 34#include "util/u_memory.h" 35#include "util/u_inlines.h" 36#include "util/u_box.h" 37#include "util/u_surface.h" 38 39#include "vg_api.h" 40#include "vg_manager.h" 41#include "vg_context.h" 42#include "api.h" 43#include "handle.h" 44 45static boolean 46vg_context_update_color_rb(struct vg_context *ctx, struct pipe_resource *pt) 47{ 48 struct st_renderbuffer *strb = ctx->draw_buffer->strb; 49 struct pipe_context *pipe = ctx->pipe; 50 struct pipe_surface surf_tmpl; 51 52 if (strb->texture == pt) { 53 pipe_resource_reference(&pt, NULL); 54 return FALSE; 55 } 56 57 /* unreference existing ones */ 58 pipe_surface_reference(&strb->surface, NULL); 59 pipe_resource_reference(&strb->texture, NULL); 60 strb->width = strb->height = 0; 61 62 strb->texture = pt; 63 64 memset(&surf_tmpl, 0, sizeof(surf_tmpl)); 65 u_surface_default_template(&surf_tmpl, strb->texture, 66 PIPE_BIND_RENDER_TARGET); 67 strb->surface = pipe->create_surface(pipe, strb->texture, &surf_tmpl); 68 69 if (!strb->surface) { 70 pipe_resource_reference(&strb->texture, NULL); 71 return TRUE; 72 } 73 74 strb->width = pt->width0; 75 strb->height = pt->height0; 76 77 return TRUE; 78} 79 80/** 81 * Flush the front buffer if the current context renders to the front buffer. 82 */ 83void 84vg_manager_flush_frontbuffer(struct vg_context *ctx) 85{ 86 struct st_framebuffer *stfb = ctx->draw_buffer; 87 88 if (!stfb) 89 return; 90 91 switch (stfb->strb_att) { 92 case ST_ATTACHMENT_FRONT_LEFT: 93 case ST_ATTACHMENT_FRONT_RIGHT: 94 stfb->iface->flush_front(stfb->iface, stfb->strb_att); 95 break; 96 default: 97 break; 98 } 99} 100 101/** 102 * Re-validate the framebuffer. 103 */ 104void 105vg_manager_validate_framebuffer(struct vg_context *ctx) 106{ 107 struct st_framebuffer *stfb = ctx->draw_buffer; 108 struct pipe_resource *pt; 109 int32_t new_stamp; 110 111 /* no binding surface */ 112 if (!stfb) 113 return; 114 115 new_stamp = p_atomic_read(&stfb->iface->stamp); 116 if (stfb->iface_stamp != new_stamp) { 117 do { 118 /* validate the fb */ 119 if (!stfb->iface->validate(stfb->iface, &stfb->strb_att, 120 1, &pt) || !pt) 121 return; 122 123 stfb->iface_stamp = new_stamp; 124 new_stamp = p_atomic_read(&stfb->iface->stamp); 125 126 } while (stfb->iface_stamp != new_stamp); 127 128 if (vg_context_update_color_rb(ctx, pt) || 129 stfb->width != pt->width0 || 130 stfb->height != pt->height0) 131 ++stfb->stamp; 132 133 stfb->width = pt->width0; 134 stfb->height = pt->height0; 135 } 136 137 if (ctx->draw_stamp != stfb->stamp) { 138 ctx->state.dirty |= FRAMEBUFFER_DIRTY; 139 ctx->draw_stamp = stfb->stamp; 140 } 141} 142 143static void 144vg_context_flush(struct st_context_iface *stctxi, unsigned flags, 145 struct pipe_fence_handle **fence) 146{ 147 struct vg_context *ctx = (struct vg_context *) stctxi; 148 ctx->pipe->flush(ctx->pipe, fence); 149 if (flags & ST_FLUSH_FRONT) 150 vg_manager_flush_frontbuffer(ctx); 151} 152 153static void 154vg_context_destroy(struct st_context_iface *stctxi) 155{ 156 struct vg_context *ctx = (struct vg_context *) stctxi; 157 struct pipe_context *pipe = ctx->pipe; 158 159 vg_destroy_context(ctx); 160 pipe->destroy(pipe); 161} 162 163static struct st_context_iface * 164vg_api_create_context(struct st_api *stapi, struct st_manager *smapi, 165 const struct st_context_attribs *attribs, 166 struct st_context_iface *shared_stctxi) 167{ 168 struct vg_context *shared_ctx = (struct vg_context *) shared_stctxi; 169 struct vg_context *ctx; 170 struct pipe_context *pipe; 171 172 if (!(stapi->profile_mask & (1 << attribs->profile))) 173 return NULL; 174 175 /* only 1.0 is supported */ 176 if (attribs->major > 1 || (attribs->major == 1 && attribs->minor > 0)) 177 return NULL; 178 179 /* for VGHandle / pointer lookups */ 180 init_handles(); 181 182 pipe = smapi->screen->context_create(smapi->screen, NULL); 183 if (!pipe) 184 return NULL; 185 ctx = vg_create_context(pipe, NULL, shared_ctx); 186 if (!ctx) { 187 pipe->destroy(pipe); 188 return NULL; 189 } 190 191 ctx->iface.destroy = vg_context_destroy; 192 193 ctx->iface.flush = vg_context_flush; 194 195 ctx->iface.teximage = NULL; 196 ctx->iface.copy = NULL; 197 198 ctx->iface.st_context_private = (void *) smapi; 199 200 return &ctx->iface; 201} 202 203static struct st_renderbuffer * 204create_renderbuffer(enum pipe_format format) 205{ 206 struct st_renderbuffer *strb; 207 208 strb = CALLOC_STRUCT(st_renderbuffer); 209 if (strb) 210 strb->format = format; 211 212 return strb; 213} 214 215static void 216destroy_renderbuffer(struct st_renderbuffer *strb) 217{ 218 pipe_surface_reference(&strb->surface, NULL); 219 pipe_resource_reference(&strb->texture, NULL); 220 FREE(strb); 221} 222 223/** 224 * Decide the buffer to render to. 225 */ 226static enum st_attachment_type 227choose_attachment(struct st_framebuffer_iface *stfbi) 228{ 229 enum st_attachment_type statt; 230 231 statt = stfbi->visual->render_buffer; 232 if (statt != ST_ATTACHMENT_INVALID) { 233 /* use the buffer given by the visual, unless it is unavailable */ 234 if (!st_visual_have_buffers(stfbi->visual, 1 << statt)) { 235 switch (statt) { 236 case ST_ATTACHMENT_BACK_LEFT: 237 statt = ST_ATTACHMENT_FRONT_LEFT; 238 break; 239 case ST_ATTACHMENT_BACK_RIGHT: 240 statt = ST_ATTACHMENT_FRONT_RIGHT; 241 break; 242 default: 243 break; 244 } 245 246 if (!st_visual_have_buffers(stfbi->visual, 1 << statt)) 247 statt = ST_ATTACHMENT_INVALID; 248 } 249 } 250 251 return statt; 252} 253 254/** 255 * Bind the context to the given framebuffers. 256 */ 257static boolean 258vg_context_bind_framebuffers(struct st_context_iface *stctxi, 259 struct st_framebuffer_iface *stdrawi, 260 struct st_framebuffer_iface *streadi) 261{ 262 struct vg_context *ctx = (struct vg_context *) stctxi; 263 struct st_framebuffer *stfb; 264 enum st_attachment_type strb_att; 265 266 /* the draw and read framebuffers must be the same */ 267 if (stdrawi != streadi) 268 return FALSE; 269 270 strb_att = (stdrawi) ? choose_attachment(stdrawi) : ST_ATTACHMENT_INVALID; 271 272 if (ctx->draw_buffer) { 273 stfb = ctx->draw_buffer; 274 275 /* free the existing fb */ 276 if (!stdrawi || 277 stfb->strb_att != strb_att || 278 stfb->strb->format != stdrawi->visual->color_format) { 279 destroy_renderbuffer(stfb->strb); 280 destroy_renderbuffer(stfb->dsrb); 281 FREE(stfb); 282 283 ctx->draw_buffer = NULL; 284 } 285 } 286 287 if (!stdrawi) 288 return TRUE; 289 290 if (strb_att == ST_ATTACHMENT_INVALID) 291 return FALSE; 292 293 /* create a new fb */ 294 if (!ctx->draw_buffer) { 295 stfb = CALLOC_STRUCT(st_framebuffer); 296 if (!stfb) 297 return FALSE; 298 299 stfb->strb = create_renderbuffer(stdrawi->visual->color_format); 300 if (!stfb->strb) { 301 FREE(stfb); 302 return FALSE; 303 } 304 305 stfb->dsrb = create_renderbuffer(ctx->ds_format); 306 if (!stfb->dsrb) { 307 FREE(stfb->strb); 308 FREE(stfb); 309 return FALSE; 310 } 311 312 stfb->width = 0; 313 stfb->height = 0; 314 stfb->strb_att = strb_att; 315 stfb->stamp = 1; 316 stfb->iface_stamp = p_atomic_read(&stdrawi->stamp) - 1; 317 318 ctx->draw_buffer = stfb; 319 } 320 321 ctx->draw_buffer->iface = stdrawi; 322 ctx->draw_stamp = ctx->draw_buffer->stamp - 1; 323 324 return TRUE; 325} 326 327static boolean 328vg_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi, 329 struct st_framebuffer_iface *stdrawi, 330 struct st_framebuffer_iface *streadi) 331{ 332 struct vg_context *ctx = (struct vg_context *) stctxi; 333 334 if (stctxi) 335 vg_context_bind_framebuffers(stctxi, stdrawi, streadi); 336 vg_set_current_context(ctx); 337 338 return TRUE; 339} 340 341static struct st_context_iface * 342vg_api_get_current(struct st_api *stapi) 343{ 344 struct vg_context *ctx = vg_current_context(); 345 346 return (ctx) ? &ctx->iface : NULL; 347} 348 349static st_proc_t 350vg_api_get_proc_address(struct st_api *stapi, const char *procname) 351{ 352 return api_get_proc_address(procname); 353} 354 355static void 356vg_api_destroy(struct st_api *stapi) 357{ 358} 359 360static const struct st_api vg_api = { 361 "Vega " VEGA_VERSION_STRING, 362 ST_API_OPENVG, 363 ST_PROFILE_DEFAULT_MASK, 364 vg_api_destroy, 365 vg_api_get_proc_address, 366 vg_api_create_context, 367 vg_api_make_current, 368 vg_api_get_current, 369}; 370 371const struct st_api * 372vg_api_get(void) 373{ 374 return &vg_api; 375} 376