src/gallium/drivers/noop/noop_pipe.c

   1 /*
   2  * Copyright 2010 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #include <stdio.h>
  24 #include <errno.h>
  25 #include "pipe/p_defines.h"
  26 #include "pipe/p_state.h"
  27 #include "pipe/p_context.h"
  28 #include "pipe/p_screen.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_inlines.h"
  31 #include "util/u_format.h"
  32 #include "noop_public.h"
  33
  34 DEBUG_GET_ONCE_BOOL_OPTION(noop, "GALLIUM_NOOP", FALSE)
  35
  36 void noop_init_state_functions(struct pipe_context *ctx);
  37
  38 struct noop_pipe_screen {
  39         struct pipe_screen      pscreen;
  40         struct pipe_screen      *oscreen;
  41 };
  42
  43 /*
  44  * query
  45  */
  46 struct noop_query {
  47         unsigned        query;
  48 };
  49 static struct pipe_query *noop_create_query(struct pipe_context *ctx, unsigned query_type, unsigned index)
  50 {
  51         struct noop_query *query = CALLOC_STRUCT(noop_query);
  52
  53         return (struct pipe_query *)query;
  54 }
  55
  56 static void noop_destroy_query(struct pipe_context *ctx, struct pipe_query *query)
  57 {
  58         FREE(query);
  59 }
  60
  61 static boolean noop_begin_query(struct pipe_context *ctx, struct pipe_query *query)
  62 {
  63    return true;
  64 }
  65
  66 static bool noop_end_query(struct pipe_context *ctx, struct pipe_query *query)
  67 {
  68    return true;
  69 }
  70
  71 static boolean noop_get_query_result(struct pipe_context *ctx,
  72                                         struct pipe_query *query,
  73                                         boolean wait,
  74                                         union pipe_query_result *vresult)
  75 {
  76         uint64_t *result = (uint64_t*)vresult;
  77
  78         *result = 0;
  79         return TRUE;
  80 }
  81
  82 static void
  83 noop_set_active_query_state(struct pipe_context *pipe, boolean enable)
  84 {
  85 }
  86
  87
  88 /*
  89  * resource
  90  */
  91 struct noop_resource {
  92         struct pipe_resource    base;
  93         unsigned                size;
  94         char                    *data;
  95         struct sw_displaytarget *dt;
  96 };
  97
  98 static struct pipe_resource *noop_resource_create(struct pipe_screen *screen,
  99                                                 const struct pipe_resource *templ)
 100 {
 101         struct noop_resource *nresource;
 102         unsigned stride;
 103
 104         nresource = CALLOC_STRUCT(noop_resource);
 105         if (!nresource)
 106                 return NULL;
 107
 108         stride = util_format_get_stride(templ->format, templ->width0);
 109         nresource->base = *templ;
 110         nresource->base.screen = screen;
 111         nresource->size = stride * templ->height0 * templ->depth0;
 112         nresource->data = MALLOC(nresource->size);
 113         pipe_reference_init(&nresource->base.reference, 1);
 114         if (nresource->data == NULL) {
 115                 FREE(nresource);
 116                 return NULL;
 117         }
 118         return &nresource->base;
 119 }
 120
 121 static struct pipe_resource *noop_resource_from_handle(struct pipe_screen *screen,
 122                                                         const struct pipe_resource *templ,
 123                                                         struct winsys_handle *handle,
 124                                                        unsigned usage)
 125 {
 126         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 127         struct pipe_screen *oscreen = noop_screen->oscreen;
 128         struct pipe_resource *result;
 129         struct pipe_resource *noop_resource;
 130
 131         result = oscreen->resource_from_handle(oscreen, templ, handle, usage);
 132         noop_resource = noop_resource_create(screen, result);
 133         pipe_resource_reference(&result, NULL);
 134         return noop_resource;
 135 }
 136
 137 static boolean noop_resource_get_handle(struct pipe_screen *screen,
 138                                         struct pipe_context *ctx,
 139                                         struct pipe_resource *resource,
 140                                         struct winsys_handle *handle,
 141                                         unsigned usage)
 142 {
 143         return FALSE;
 144 }
 145
 146 static void noop_resource_destroy(struct pipe_screen *screen,
 147                                         struct pipe_resource *resource)
 148 {
 149         struct noop_resource *nresource = (struct noop_resource *)resource;
 150
 151         FREE(nresource->data);
 152         FREE(resource);
 153 }
 154
 155
 156 /*
 157  * transfer
 158  */
 159 static void *noop_transfer_map(struct pipe_context *pipe,
 160                                struct pipe_resource *resource,
 161                                unsigned level,
 162                                enum pipe_transfer_usage usage,
 163                                const struct pipe_box *box,
 164                                struct pipe_transfer **ptransfer)
 165 {
 166    struct pipe_transfer *transfer;
 167    struct noop_resource *nresource = (struct noop_resource *)resource;
 168
 169    transfer = CALLOC_STRUCT(pipe_transfer);
 170    if (!transfer)
 171            return NULL;
 172    pipe_resource_reference(&transfer->resource, resource);
 173    transfer->level = level;
 174    transfer->usage = usage;
 175    transfer->box = *box;
 176    transfer->stride = 1;
 177    transfer->layer_stride = 1;
 178    *ptransfer = transfer;
 179
 180    return nresource->data;
 181 }
 182
 183 static void noop_transfer_flush_region(struct pipe_context *pipe,
 184                                         struct pipe_transfer *transfer,
 185                                         const struct pipe_box *box)
 186 {
 187 }
 188
 189 static void noop_transfer_unmap(struct pipe_context *pipe,
 190                                 struct pipe_transfer *transfer)
 191 {
 192    pipe_resource_reference(&transfer->resource, NULL);
 193    FREE(transfer);
 194 }
 195
 196 static void noop_buffer_subdata(struct pipe_context *pipe,
 197                                 struct pipe_resource *resource,
 198                                 unsigned usage, unsigned offset,
 199                                 unsigned size, const void *data)
 200 {
 201 }
 202
 203 static void noop_texture_subdata(struct pipe_context *pipe,
 204                                  struct pipe_resource *resource,
 205                                  unsigned level,
 206                                  unsigned usage,
 207                                  const struct pipe_box *box,
 208                                  const void *data,
 209                                  unsigned stride,
 210                                  unsigned layer_stride)
 211 {
 212 }
 213
 214
 215 /*
 216  * clear/copy
 217  */
 218 static void noop_clear(struct pipe_context *ctx, unsigned buffers,
 219                        const union pipe_color_union *color, double depth, unsigned stencil)
 220 {
 221 }
 222
 223 static void noop_clear_render_target(struct pipe_context *ctx,
 224                                      struct pipe_surface *dst,
 225                                      const union pipe_color_union *color,
 226                                      unsigned dstx, unsigned dsty,
 227                                      unsigned width, unsigned height,
 228                                      bool render_condition_enabled)
 229 {
 230 }
 231
 232 static void noop_clear_depth_stencil(struct pipe_context *ctx,
 233                                      struct pipe_surface *dst,
 234                                      unsigned clear_flags,
 235                                      double depth,
 236                                      unsigned stencil,
 237                                      unsigned dstx, unsigned dsty,
 238                                      unsigned width, unsigned height,
 239                                      bool render_condition_enabled)
 240 {
 241 }
 242
 243 static void noop_resource_copy_region(struct pipe_context *ctx,
 244                                       struct pipe_resource *dst,
 245                                       unsigned dst_level,
 246                                       unsigned dstx, unsigned dsty, unsigned dstz,
 247                                       struct pipe_resource *src,
 248                                       unsigned src_level,
 249                                       const struct pipe_box *src_box)
 250 {
 251 }
 252
 253
 254 static void noop_blit(struct pipe_context *ctx,
 255                       const struct pipe_blit_info *info)
 256 {
 257 }
 258
 259
 260 static void
 261 noop_flush_resource(struct pipe_context *ctx,
 262                     struct pipe_resource *resource)
 263 {
 264 }
 265
 266
 267 /*
 268  * context
 269  */
 270 static void noop_flush(struct pipe_context *ctx,
 271                        struct pipe_fence_handle **fence,
 272                        unsigned flags)
 273 {
 274 }
 275
 276 static void noop_destroy_context(struct pipe_context *ctx)
 277 {
 278         FREE(ctx);
 279 }
 280
 281 static struct pipe_context *noop_create_context(struct pipe_screen *screen,
 282                                                 void *priv, unsigned flags)
 283 {
 284         struct pipe_context *ctx = CALLOC_STRUCT(pipe_context);
 285
 286         if (!ctx)
 287                 return NULL;
 288         ctx->screen = screen;
 289         ctx->priv = priv;
 290         ctx->destroy = noop_destroy_context;
 291         ctx->flush = noop_flush;
 292         ctx->clear = noop_clear;
 293         ctx->clear_render_target = noop_clear_render_target;
 294         ctx->clear_depth_stencil = noop_clear_depth_stencil;
 295         ctx->resource_copy_region = noop_resource_copy_region;
 296         ctx->blit = noop_blit;
 297         ctx->flush_resource = noop_flush_resource;
 298         ctx->create_query = noop_create_query;
 299         ctx->destroy_query = noop_destroy_query;
 300         ctx->begin_query = noop_begin_query;
 301         ctx->end_query = noop_end_query;
 302         ctx->get_query_result = noop_get_query_result;
 303         ctx->set_active_query_state = noop_set_active_query_state;
 304         ctx->transfer_map = noop_transfer_map;
 305         ctx->transfer_flush_region = noop_transfer_flush_region;
 306         ctx->transfer_unmap = noop_transfer_unmap;
 307         ctx->buffer_subdata = noop_buffer_subdata;
 308         ctx->texture_subdata = noop_texture_subdata;
 309         noop_init_state_functions(ctx);
 310
 311         return ctx;
 312 }
 313
 314
 315 /*
 316  * pipe_screen
 317  */
 318 static void noop_flush_frontbuffer(struct pipe_screen *_screen,
 319                                    struct pipe_resource *resource,
 320                                    unsigned level, unsigned layer,
 321                                    void *context_private, struct pipe_box *box)
 322 {
 323 }
 324
 325 static const char *noop_get_vendor(struct pipe_screen* pscreen)
 326 {
 327         return "X.Org";
 328 }
 329
 330 static const char *noop_get_device_vendor(struct pipe_screen* pscreen)
 331 {
 332         return "NONE";
 333 }
 334
 335 static const char *noop_get_name(struct pipe_screen* pscreen)
 336 {
 337         return "NOOP";
 338 }
 339
 340 static int noop_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 341 {
 342         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 343
 344         return screen->get_param(screen, param);
 345 }
 346
 347 static float noop_get_paramf(struct pipe_screen* pscreen,
 348                              enum pipe_capf param)
 349 {
 350         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 351
 352         return screen->get_paramf(screen, param);
 353 }
 354
 355 static int noop_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 356 {
 357         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 358
 359         return screen->get_shader_param(screen, shader, param);
 360 }
 361
 362 static boolean noop_is_format_supported(struct pipe_screen* pscreen,
 363                                         enum pipe_format format,
 364                                         enum pipe_texture_target target,
 365                                         unsigned sample_count,
 366                                         unsigned usage)
 367 {
 368         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 369
 370         return screen->is_format_supported(screen, format, target, sample_count, usage);
 371 }
 372
 373 static uint64_t noop_get_timestamp(struct pipe_screen *pscreen)
 374 {
 375         return 0;
 376 }
 377
 378 static void noop_destroy_screen(struct pipe_screen *screen)
 379 {
 380         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 381         struct pipe_screen *oscreen = noop_screen->oscreen;
 382
 383         oscreen->destroy(oscreen);
 384         FREE(screen);
 385 }
 386
 387 struct pipe_screen *noop_screen_create(struct pipe_screen *oscreen)
 388 {
 389         struct noop_pipe_screen *noop_screen;
 390         struct pipe_screen *screen;
 391
 392         if (!debug_get_option_noop()) {
 393                 return oscreen;
 394         }
 395
 396         noop_screen = CALLOC_STRUCT(noop_pipe_screen);
 397         if (!noop_screen) {
 398                 return NULL;
 399         }
 400         noop_screen->oscreen = oscreen;
 401         screen = &noop_screen->pscreen;
 402
 403         screen->destroy = noop_destroy_screen;
 404         screen->get_name = noop_get_name;
 405         screen->get_vendor = noop_get_vendor;
 406         screen->get_device_vendor = noop_get_device_vendor;
 407         screen->get_param = noop_get_param;
 408         screen->get_shader_param = noop_get_shader_param;
 409         screen->get_paramf = noop_get_paramf;
 410         screen->is_format_supported = noop_is_format_supported;
 411         screen->context_create = noop_create_context;
 412         screen->resource_create = noop_resource_create;
 413         screen->resource_from_handle = noop_resource_from_handle;
 414         screen->resource_get_handle = noop_resource_get_handle;
 415         screen->resource_destroy = noop_resource_destroy;
 416         screen->flush_frontbuffer = noop_flush_frontbuffer;
 417         screen->get_timestamp = noop_get_timestamp;
 418
 419         return screen;
 420 }