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,
  72                                         union pipe_query_result *vresult)
  73 {
  74         uint64_t *result = (uint64_t*)vresult;
  75
  76         *result = 0;
  77         return TRUE;
  78 }
  79
  80
  81 /*
  82  * resource
  83  */
  84 struct noop_resource {
  85         struct pipe_resource    base;
  86         unsigned                size;
  87         char                    *data;
  88         struct sw_displaytarget *dt;
  89 };
  90
  91 static struct pipe_resource *noop_resource_create(struct pipe_screen *screen,
  92                                                 const struct pipe_resource *templ)
  93 {
  94         struct noop_resource *nresource;
  95         unsigned stride;
  96
  97         nresource = CALLOC_STRUCT(noop_resource);
  98         if (nresource == NULL)
  99                 return NULL;
 100
 101         stride = util_format_get_stride(templ->format, templ->width0);
 102         nresource->base = *templ;
 103         nresource->base.screen = screen;
 104         nresource->size = stride * templ->height0 * templ->depth0;
 105         nresource->data = MALLOC(nresource->size);
 106         pipe_reference_init(&nresource->base.reference, 1);
 107         if (nresource->data == NULL) {
 108                 FREE(nresource);
 109                 return NULL;
 110         }
 111         return &nresource->base;
 112 }
 113
 114 static struct pipe_resource *noop_resource_from_handle(struct pipe_screen *screen,
 115                                                         const struct pipe_resource *templ,
 116                                                         struct winsys_handle *handle)
 117 {
 118         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 119         struct pipe_screen *oscreen = noop_screen->oscreen;
 120         struct pipe_resource *result;
 121         struct pipe_resource *noop_resource;
 122
 123         result = oscreen->resource_from_handle(oscreen, templ, handle);
 124         noop_resource = noop_resource_create(screen, result);
 125         pipe_resource_reference(&result, NULL);
 126         return noop_resource;
 127 }
 128
 129 static boolean noop_resource_get_handle(struct pipe_screen *screen,
 130                                         struct pipe_resource *resource,
 131                                         struct winsys_handle *handle)
 132 {
 133         return FALSE;
 134 }
 135
 136 static void noop_resource_destroy(struct pipe_screen *screen,
 137                                         struct pipe_resource *resource)
 138 {
 139         struct noop_resource *nresource = (struct noop_resource *)resource;
 140
 141         FREE(nresource->data);
 142         FREE(resource);
 143 }
 144
 145 static struct pipe_resource *noop_user_buffer_create(struct pipe_screen *screen,
 146                                                         void *ptr, unsigned bytes,
 147                                                         unsigned bind)
 148 {
 149         struct pipe_resource templ;
 150
 151         templ.target = PIPE_BUFFER;
 152         templ.format = PIPE_FORMAT_R8_UNORM;
 153         templ.usage = PIPE_USAGE_IMMUTABLE;
 154         templ.bind = bind;
 155         templ.width0 = bytes;
 156         templ.height0 = 1;
 157         templ.depth0 = 1;
 158         templ.flags = 0;
 159         return noop_resource_create(screen, &templ);
 160 }
 161
 162
 163 /*
 164  * transfer
 165  */
 166 static struct pipe_transfer *noop_get_transfer(struct pipe_context *context,
 167                                                 struct pipe_resource *resource,
 168                                                 unsigned level,
 169                                                 enum pipe_transfer_usage usage,
 170                                                 const struct pipe_box *box)
 171 {
 172         struct pipe_transfer *transfer;
 173
 174         transfer = CALLOC_STRUCT(pipe_transfer);
 175         if (transfer == NULL)
 176                 return NULL;
 177         pipe_resource_reference(&transfer->resource, resource);
 178         transfer->level = level;
 179         transfer->usage = usage;
 180         transfer->box = *box;
 181         transfer->stride = 1;
 182         transfer->layer_stride = 1;
 183         return transfer;
 184 }
 185
 186 static void *noop_transfer_map(struct pipe_context *pipe,
 187                                 struct pipe_transfer *transfer)
 188 {
 189         struct noop_resource *nresource = (struct noop_resource *)transfer->resource;
 190
 191         return nresource->data;
 192 }
 193
 194 static void noop_transfer_flush_region(struct pipe_context *pipe,
 195                                         struct pipe_transfer *transfer,
 196                                         const struct pipe_box *box)
 197 {
 198 }
 199
 200 static void noop_transfer_unmap(struct pipe_context *pipe,
 201                                 struct pipe_transfer *transfer)
 202 {
 203 }
 204
 205 static void noop_transfer_destroy(struct pipe_context *pipe,
 206                                         struct pipe_transfer *transfer)
 207 {
 208         pipe_resource_reference(&transfer->resource, NULL);
 209         FREE(transfer);
 210 }
 211
 212 static void noop_transfer_inline_write(struct pipe_context *pipe,
 213                                         struct pipe_resource *resource,
 214                                         unsigned level,
 215                                         unsigned usage,
 216                                         const struct pipe_box *box,
 217                                         const void *data,
 218                                         unsigned stride,
 219                                         unsigned layer_stride)
 220 {
 221 }
 222
 223
 224 /*
 225  * clear/copy
 226  */
 227 static void noop_clear(struct pipe_context *ctx, unsigned buffers,
 228                        const union pipe_color_union *color, double depth, unsigned stencil)
 229 {
 230 }
 231
 232 static void noop_clear_render_target(struct pipe_context *ctx,
 233                                      struct pipe_surface *dst,
 234                                      const union pipe_color_union *color,
 235                                      unsigned dstx, unsigned dsty,
 236                                      unsigned width, unsigned height)
 237 {
 238 }
 239
 240 static void noop_clear_depth_stencil(struct pipe_context *ctx,
 241                                      struct pipe_surface *dst,
 242                                      unsigned clear_flags,
 243                                      double depth,
 244                                      unsigned stencil,
 245                                      unsigned dstx, unsigned dsty,
 246                                      unsigned width, unsigned height)
 247 {
 248 }
 249
 250 static void noop_resource_copy_region(struct pipe_context *ctx,
 251                                       struct pipe_resource *dst,
 252                                       unsigned dst_level,
 253                                       unsigned dstx, unsigned dsty, unsigned dstz,
 254                                       struct pipe_resource *src,
 255                                       unsigned src_level,
 256                                       const struct pipe_box *src_box)
 257 {
 258 }
 259
 260
 261 /*
 262  * context
 263  */
 264 static void noop_flush(struct pipe_context *ctx,
 265                         struct pipe_fence_handle **fence)
 266 {
 267 }
 268
 269 static void noop_destroy_context(struct pipe_context *ctx)
 270 {
 271         FREE(ctx);
 272 }
 273
 274 static struct pipe_context *noop_create_context(struct pipe_screen *screen, void *priv)
 275 {
 276         struct pipe_context *ctx = CALLOC_STRUCT(pipe_context);
 277
 278         if (ctx == NULL)
 279                 return NULL;
 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,
 333                              enum pipe_capf param)
 334 {
 335         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 336
 337         return screen->get_paramf(screen, param);
 338 }
 339
 340 static int noop_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 341 {
 342         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 343
 344         return screen->get_shader_param(screen, shader, param);
 345 }
 346
 347 static boolean noop_is_format_supported(struct pipe_screen* pscreen,
 348                                         enum pipe_format format,
 349                                         enum pipe_texture_target target,
 350                                         unsigned sample_count,
 351                                         unsigned usage)
 352 {
 353         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 354
 355         return screen->is_format_supported(screen, format, target, sample_count, usage);
 356 }
 357
 358 static void noop_destroy_screen(struct pipe_screen *screen)
 359 {
 360         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 361         struct pipe_screen *oscreen = noop_screen->oscreen;
 362
 363         oscreen->destroy(oscreen);
 364         FREE(screen);
 365 }
 366
 367 struct pipe_screen *noop_screen_create(struct pipe_screen *oscreen)
 368 {
 369         struct noop_pipe_screen *noop_screen;
 370         struct pipe_screen *screen;
 371
 372         if (!debug_get_option_noop()) {
 373                 return oscreen;
 374         }
 375
 376         noop_screen = CALLOC_STRUCT(noop_pipe_screen);
 377         if (noop_screen == NULL) {
 378                 return NULL;
 379         }
 380         noop_screen->oscreen = oscreen;
 381         screen = &noop_screen->pscreen;
 382
 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 }