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)
  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 void noop_begin_query(struct pipe_context *ctx, struct pipe_query *query)
  62 {
  63 }
  64
  65 static void noop_end_query(struct pipe_context *ctx, struct pipe_query *query)
  66 {
  67 }
  68
  69 static boolean noop_get_query_result(struct pipe_context *ctx,
  70                                         struct pipe_query *query,
  71                                         boolean wait, void *vresult)
  72 {
  73         uint64_t *result = (uint64_t*)vresult;
  74
  75         *result = 0;
  76         return TRUE;
  77 }
  78
  79
  80 /*
  81  * resource
  82  */
  83 struct noop_resource {
  84         struct pipe_resource    base;
  85         unsigned                size;
  86         char                    *data;
  87         struct sw_displaytarget *dt;
  88 };
  89
  90 static struct pipe_resource *noop_resource_create(struct pipe_screen *screen,
  91                                                 const struct pipe_resource *templ)
  92 {
  93         struct noop_resource *nresource;
  94         unsigned stride;
  95
  96         nresource = CALLOC_STRUCT(noop_resource);
  97         if (nresource == NULL)
  98                 return NULL;
  99
 100         stride = util_format_get_stride(templ->format, templ->width0);
 101         nresource->base = *templ;
 102         nresource->base.screen = screen;
 103         nresource->size = stride * templ->height0 * templ->depth0;
 104         nresource->data = malloc(nresource->size);
 105         pipe_reference_init(&nresource->base.reference, 1);
 106         if (nresource->data == NULL) {
 107                 FREE(nresource);
 108                 return NULL;
 109         }
 110         return &nresource->base;
 111 }
 112
 113 static struct pipe_resource *noop_resource_from_handle(struct pipe_screen *screen,
 114                                                         const struct pipe_resource *templ,
 115                                                         struct winsys_handle *handle)
 116 {
 117         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 118         struct pipe_screen *oscreen = noop_screen->oscreen;
 119         struct pipe_resource *result;
 120         struct pipe_resource *noop_resource;
 121
 122         result = oscreen->resource_from_handle(oscreen, templ, handle);
 123         noop_resource = noop_resource_create(screen, result);
 124         pipe_resource_reference(&result, NULL);
 125         return noop_resource;
 126 }
 127
 128 static boolean noop_resource_get_handle(struct pipe_screen *screen,
 129                                         struct pipe_resource *resource,
 130                                         struct winsys_handle *handle)
 131 {
 132         return FALSE;
 133 }
 134
 135 static void noop_resource_destroy(struct pipe_screen *screen,
 136                                         struct pipe_resource *resource)
 137 {
 138         struct noop_resource *nresource = (struct noop_resource *)resource;
 139
 140         free(nresource->data);
 141         FREE(resource);
 142 }
 143
 144 static struct pipe_resource *noop_user_buffer_create(struct pipe_screen *screen,
 145                                                         void *ptr, unsigned bytes,
 146                                                         unsigned bind)
 147 {
 148         struct pipe_resource templ;
 149
 150         templ.target = PIPE_BUFFER;
 151         templ.format = PIPE_FORMAT_R8_UNORM;
 152         templ.usage = PIPE_USAGE_IMMUTABLE;
 153         templ.bind = bind;
 154         templ.width0 = bytes;
 155         templ.height0 = 1;
 156         templ.depth0 = 1;
 157         templ.flags = 0;
 158         return noop_resource_create(screen, &templ);
 159 }
 160
 161
 162 /*
 163  * transfer
 164  */
 165 static struct pipe_transfer *noop_get_transfer(struct pipe_context *context,
 166                                                 struct pipe_resource *resource,
 167                                                 unsigned level,
 168                                                 enum pipe_transfer_usage usage,
 169                                                 const struct pipe_box *box)
 170 {
 171         struct pipe_transfer *transfer;
 172
 173         transfer = CALLOC_STRUCT(pipe_transfer);
 174         if (transfer == NULL)
 175                 return NULL;
 176         pipe_resource_reference(&transfer->resource, resource);
 177         transfer->level = level;
 178         transfer->usage = usage;
 179         transfer->box = *box;
 180         transfer->stride = 1;
 181         transfer->layer_stride = 1;
 182         return transfer;
 183 }
 184
 185 static void *noop_transfer_map(struct pipe_context *pipe,
 186                                 struct pipe_transfer *transfer)
 187 {
 188         struct noop_resource *nresource = (struct noop_resource *)transfer->resource;
 189
 190         return nresource->data;
 191 }
 192
 193 static void noop_transfer_flush_region(struct pipe_context *pipe,
 194                                         struct pipe_transfer *transfer,
 195                                         const struct pipe_box *box)
 196 {
 197 }
 198
 199 static void noop_transfer_unmap(struct pipe_context *pipe,
 200                                 struct pipe_transfer *transfer)
 201 {
 202 }
 203
 204 static void noop_transfer_destroy(struct pipe_context *pipe,
 205                                         struct pipe_transfer *transfer)
 206 {
 207         pipe_resource_reference(&transfer->resource, NULL);
 208         FREE(transfer);
 209 }
 210
 211 static void noop_transfer_inline_write(struct pipe_context *pipe,
 212                                         struct pipe_resource *resource,
 213                                         unsigned level,
 214                                         unsigned usage,
 215                                         const struct pipe_box *box,
 216                                         const void *data,
 217                                         unsigned stride,
 218                                         unsigned layer_stride)
 219 {
 220 }
 221
 222
 223 /*
 224  * clear/copy
 225  */
 226 static void noop_clear(struct pipe_context *ctx, unsigned buffers,
 227                        const union pipe_color_union *color, double depth, unsigned stencil)
 228 {
 229 }
 230
 231 static void noop_clear_render_target(struct pipe_context *ctx,
 232                                      struct pipe_surface *dst,
 233                                      const union pipe_color_union *color,
 234                                      unsigned dstx, unsigned dsty,
 235                                      unsigned width, unsigned height)
 236 {
 237 }
 238
 239 static void noop_clear_depth_stencil(struct pipe_context *ctx,
 240                                      struct pipe_surface *dst,
 241                                      unsigned clear_flags,
 242                                      double depth,
 243                                      unsigned stencil,
 244                                      unsigned dstx, unsigned dsty,
 245                                      unsigned width, unsigned height)
 246 {
 247 }
 248
 249 static void noop_resource_copy_region(struct pipe_context *ctx,
 250                                       struct pipe_resource *dst,
 251                                       unsigned dst_level,
 252                                       unsigned dstx, unsigned dsty, unsigned dstz,
 253                                       struct pipe_resource *src,
 254                                       unsigned src_level,
 255                                       const struct pipe_box *src_box)
 256 {
 257 }
 258
 259
 260 /*
 261  * context
 262  */
 263 static void noop_flush(struct pipe_context *ctx,
 264                         struct pipe_fence_handle **fence)
 265 {
 266 }
 267
 268 static void noop_destroy_context(struct pipe_context *ctx)
 269 {
 270         FREE(ctx);
 271 }
 272
 273 static struct pipe_context *noop_create_context(struct pipe_screen *screen, void *priv)
 274 {
 275         struct pipe_context *ctx = CALLOC_STRUCT(pipe_context);
 276
 277         if (ctx == NULL)
 278                 return NULL;
 279         ctx->winsys = screen->winsys;
 280         ctx->screen = screen;
 281         ctx->priv = priv;
 282         ctx->destroy = noop_destroy_context;
 283         ctx->flush = noop_flush;
 284         ctx->clear = noop_clear;
 285         ctx->clear_render_target = noop_clear_render_target;
 286         ctx->clear_depth_stencil = noop_clear_depth_stencil;
 287         ctx->resource_copy_region = noop_resource_copy_region;
 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->get_transfer = noop_get_transfer;
 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_destroy = noop_transfer_destroy;
 298         ctx->transfer_inline_write = noop_transfer_inline_write;
 299         noop_init_state_functions(ctx);
 300
 301         return ctx;
 302 }
 303
 304
 305 /*
 306  * pipe_screen
 307  */
 308 static void noop_flush_frontbuffer(struct pipe_screen *_screen,
 309                                    struct pipe_resource *resource,
 310                                    unsigned level, unsigned layer,
 311                                    void *context_private)
 312 {
 313 }
 314
 315 static const char *noop_get_vendor(struct pipe_screen* pscreen)
 316 {
 317         return "X.Org";
 318 }
 319
 320 static const char *noop_get_name(struct pipe_screen* pscreen)
 321 {
 322         return "NOOP";
 323 }
 324
 325 static int noop_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 326 {
 327         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 328
 329         return screen->get_param(screen, param);
 330 }
 331
 332 static float noop_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 333 {
 334         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 335
 336         return screen->get_paramf(screen, param);
 337 }
 338
 339 static int noop_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 340 {
 341         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 342
 343         return screen->get_shader_param(screen, shader, param);
 344 }
 345
 346 static boolean noop_is_format_supported(struct pipe_screen* pscreen,
 347                                         enum pipe_format format,
 348                                         enum pipe_texture_target target,
 349                                         unsigned sample_count,
 350                                         unsigned usage)
 351 {
 352         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 353
 354         return screen->is_format_supported(screen, format, target, sample_count, usage);
 355 }
 356
 357 static void noop_destroy_screen(struct pipe_screen *screen)
 358 {
 359         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 360         struct pipe_screen *oscreen = noop_screen->oscreen;
 361
 362         oscreen->destroy(oscreen);
 363         FREE(screen);
 364 }
 365
 366 struct pipe_screen *noop_screen_create(struct pipe_screen *oscreen)
 367 {
 368         struct noop_pipe_screen *noop_screen;
 369         struct pipe_screen *screen;
 370
 371         if (!debug_get_option_noop()) {
 372                 return oscreen;
 373         }
 374
 375         noop_screen = CALLOC_STRUCT(noop_pipe_screen);
 376         if (noop_screen == NULL) {
 377                 return NULL;
 378         }
 379         noop_screen->oscreen = oscreen;
 380         screen = &noop_screen->pscreen;
 381
 382         screen->winsys = oscreen->winsys;
 383         screen->destroy = noop_destroy_screen;
 384         screen->get_name = noop_get_name;
 385         screen->get_vendor = noop_get_vendor;
 386         screen->get_param = noop_get_param;
 387         screen->get_shader_param = noop_get_shader_param;
 388         screen->get_paramf = noop_get_paramf;
 389         screen->is_format_supported = noop_is_format_supported;
 390         screen->context_create = noop_create_context;
 391         screen->resource_create = noop_resource_create;
 392         screen->resource_from_handle = noop_resource_from_handle;
 393         screen->resource_get_handle = noop_resource_get_handle;
 394         screen->resource_destroy = noop_resource_destroy;
 395         screen->user_buffer_create = noop_user_buffer_create;
 396         screen->flush_frontbuffer = noop_flush_frontbuffer;
 397
 398         return screen;
 399 }