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_resource *resource,
 139                                         struct winsys_handle *handle,
 140                                         unsigned usage)
 141 {
 142         return FALSE;
 143 }
 144
 145 static void noop_resource_destroy(struct pipe_screen *screen,
 146                                         struct pipe_resource *resource)
 147 {
 148         struct noop_resource *nresource = (struct noop_resource *)resource;
 149
 150         FREE(nresource->data);
 151         FREE(resource);
 152 }
 153
 154
 155 /*
 156  * transfer
 157  */
 158 static void *noop_transfer_map(struct pipe_context *pipe,
 159                                struct pipe_resource *resource,
 160                                unsigned level,
 161                                enum pipe_transfer_usage usage,
 162                                const struct pipe_box *box,
 163                                struct pipe_transfer **ptransfer)
 164 {
 165    struct pipe_transfer *transfer;
 166    struct noop_resource *nresource = (struct noop_resource *)resource;
 167
 168    transfer = CALLOC_STRUCT(pipe_transfer);
 169    if (!transfer)
 170            return NULL;
 171    pipe_resource_reference(&transfer->resource, resource);
 172    transfer->level = level;
 173    transfer->usage = usage;
 174    transfer->box = *box;
 175    transfer->stride = 1;
 176    transfer->layer_stride = 1;
 177    *ptransfer = transfer;
 178
 179    return nresource->data;
 180 }
 181
 182 static void noop_transfer_flush_region(struct pipe_context *pipe,
 183                                         struct pipe_transfer *transfer,
 184                                         const struct pipe_box *box)
 185 {
 186 }
 187
 188 static void noop_transfer_unmap(struct pipe_context *pipe,
 189                                 struct pipe_transfer *transfer)
 190 {
 191    pipe_resource_reference(&transfer->resource, NULL);
 192    FREE(transfer);
 193 }
 194
 195 static void noop_transfer_inline_write(struct pipe_context *pipe,
 196                                         struct pipe_resource *resource,
 197                                         unsigned level,
 198                                         unsigned usage,
 199                                         const struct pipe_box *box,
 200                                         const void *data,
 201                                         unsigned stride,
 202                                         unsigned layer_stride)
 203 {
 204 }
 205
 206
 207 /*
 208  * clear/copy
 209  */
 210 static void noop_clear(struct pipe_context *ctx, unsigned buffers,
 211                        const union pipe_color_union *color, double depth, unsigned stencil)
 212 {
 213 }
 214
 215 static void noop_clear_render_target(struct pipe_context *ctx,
 216                                      struct pipe_surface *dst,
 217                                      const union pipe_color_union *color,
 218                                      unsigned dstx, unsigned dsty,
 219                                      unsigned width, unsigned height)
 220 {
 221 }
 222
 223 static void noop_clear_depth_stencil(struct pipe_context *ctx,
 224                                      struct pipe_surface *dst,
 225                                      unsigned clear_flags,
 226                                      double depth,
 227                                      unsigned stencil,
 228                                      unsigned dstx, unsigned dsty,
 229                                      unsigned width, unsigned height)
 230 {
 231 }
 232
 233 static void noop_resource_copy_region(struct pipe_context *ctx,
 234                                       struct pipe_resource *dst,
 235                                       unsigned dst_level,
 236                                       unsigned dstx, unsigned dsty, unsigned dstz,
 237                                       struct pipe_resource *src,
 238                                       unsigned src_level,
 239                                       const struct pipe_box *src_box)
 240 {
 241 }
 242
 243
 244 static void noop_blit(struct pipe_context *ctx,
 245                       const struct pipe_blit_info *info)
 246 {
 247 }
 248
 249
 250 static void
 251 noop_flush_resource(struct pipe_context *ctx,
 252                     struct pipe_resource *resource)
 253 {
 254 }
 255
 256
 257 /*
 258  * context
 259  */
 260 static void noop_flush(struct pipe_context *ctx,
 261                        struct pipe_fence_handle **fence,
 262                        unsigned flags)
 263 {
 264 }
 265
 266 static void noop_destroy_context(struct pipe_context *ctx)
 267 {
 268         FREE(ctx);
 269 }
 270
 271 static struct pipe_context *noop_create_context(struct pipe_screen *screen,
 272                                                 void *priv, unsigned flags)
 273 {
 274         struct pipe_context *ctx = CALLOC_STRUCT(pipe_context);
 275
 276         if (!ctx)
 277                 return NULL;
 278         ctx->screen = screen;
 279         ctx->priv = priv;
 280         ctx->destroy = noop_destroy_context;
 281         ctx->flush = noop_flush;
 282         ctx->clear = noop_clear;
 283         ctx->clear_render_target = noop_clear_render_target;
 284         ctx->clear_depth_stencil = noop_clear_depth_stencil;
 285         ctx->resource_copy_region = noop_resource_copy_region;
 286         ctx->blit = noop_blit;
 287         ctx->flush_resource = noop_flush_resource;
 288         ctx->create_query = noop_create_query;
 289         ctx->destroy_query = noop_destroy_query;
 290         ctx->begin_query = noop_begin_query;
 291         ctx->end_query = noop_end_query;
 292         ctx->get_query_result = noop_get_query_result;
 293         ctx->set_active_query_state = noop_set_active_query_state;
 294         ctx->transfer_map = noop_transfer_map;
 295         ctx->transfer_flush_region = noop_transfer_flush_region;
 296         ctx->transfer_unmap = noop_transfer_unmap;
 297         ctx->transfer_inline_write = noop_transfer_inline_write;
 298         noop_init_state_functions(ctx);
 299
 300         return ctx;
 301 }
 302
 303
 304 /*
 305  * pipe_screen
 306  */
 307 static void noop_flush_frontbuffer(struct pipe_screen *_screen,
 308                                    struct pipe_resource *resource,
 309                                    unsigned level, unsigned layer,
 310                                    void *context_private, struct pipe_box *box)
 311 {
 312 }
 313
 314 static const char *noop_get_vendor(struct pipe_screen* pscreen)
 315 {
 316         return "X.Org";
 317 }
 318
 319 static const char *noop_get_device_vendor(struct pipe_screen* pscreen)
 320 {
 321         return "NONE";
 322 }
 323
 324 static const char *noop_get_name(struct pipe_screen* pscreen)
 325 {
 326         return "NOOP";
 327 }
 328
 329 static int noop_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 330 {
 331         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 332
 333         return screen->get_param(screen, param);
 334 }
 335
 336 static float noop_get_paramf(struct pipe_screen* pscreen,
 337                              enum pipe_capf param)
 338 {
 339         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 340
 341         return screen->get_paramf(screen, param);
 342 }
 343
 344 static int noop_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 345 {
 346         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 347
 348         return screen->get_shader_param(screen, shader, param);
 349 }
 350
 351 static boolean noop_is_format_supported(struct pipe_screen* pscreen,
 352                                         enum pipe_format format,
 353                                         enum pipe_texture_target target,
 354                                         unsigned sample_count,
 355                                         unsigned usage)
 356 {
 357         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 358
 359         return screen->is_format_supported(screen, format, target, sample_count, usage);
 360 }
 361
 362 static uint64_t noop_get_timestamp(struct pipe_screen *pscreen)
 363 {
 364         return 0;
 365 }
 366
 367 static void noop_destroy_screen(struct pipe_screen *screen)
 368 {
 369         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 370         struct pipe_screen *oscreen = noop_screen->oscreen;
 371
 372         oscreen->destroy(oscreen);
 373         FREE(screen);
 374 }
 375
 376 struct pipe_screen *noop_screen_create(struct pipe_screen *oscreen)
 377 {
 378         struct noop_pipe_screen *noop_screen;
 379         struct pipe_screen *screen;
 380
 381         if (!debug_get_option_noop()) {
 382                 return oscreen;
 383         }
 384
 385         noop_screen = CALLOC_STRUCT(noop_pipe_screen);
 386         if (!noop_screen) {
 387                 return NULL;
 388         }
 389         noop_screen->oscreen = oscreen;
 390         screen = &noop_screen->pscreen;
 391
 392         screen->destroy = noop_destroy_screen;
 393         screen->get_name = noop_get_name;
 394         screen->get_vendor = noop_get_vendor;
 395         screen->get_device_vendor = noop_get_device_vendor;
 396         screen->get_param = noop_get_param;
 397         screen->get_shader_param = noop_get_shader_param;
 398         screen->get_paramf = noop_get_paramf;
 399         screen->is_format_supported = noop_is_format_supported;
 400         screen->context_create = noop_create_context;
 401         screen->resource_create = noop_resource_create;
 402         screen->resource_from_handle = noop_resource_from_handle;
 403         screen->resource_get_handle = noop_resource_get_handle;
 404         screen->resource_destroy = noop_resource_destroy;
 405         screen->flush_frontbuffer = noop_flush_frontbuffer;
 406         screen->get_timestamp = noop_get_timestamp;
 407
 408         return screen;
 409 }