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 void noop_end_query(struct pipe_context *ctx, struct pipe_query *query)
  67 {
  68 }
  69
  70 static boolean noop_get_query_result(struct pipe_context *ctx,
  71                                         struct pipe_query *query,
  72                                         boolean wait,
  73                                         union pipe_query_result *vresult)
  74 {
  75         uint64_t *result = (uint64_t*)vresult;
  76
  77         *result = 0;
  78         return TRUE;
  79 }
  80
  81
  82 /*
  83  * resource
  84  */
  85 struct noop_resource {
  86         struct pipe_resource    base;
  87         unsigned                size;
  88         char                    *data;
  89         struct sw_displaytarget *dt;
  90 };
  91
  92 static struct pipe_resource *noop_resource_create(struct pipe_screen *screen,
  93                                                 const struct pipe_resource *templ)
  94 {
  95         struct noop_resource *nresource;
  96         unsigned stride;
  97
  98         nresource = CALLOC_STRUCT(noop_resource);
  99         if (nresource == NULL)
 100                 return NULL;
 101
 102         stride = util_format_get_stride(templ->format, templ->width0);
 103         nresource->base = *templ;
 104         nresource->base.screen = screen;
 105         nresource->size = stride * templ->height0 * templ->depth0;
 106         nresource->data = MALLOC(nresource->size);
 107         pipe_reference_init(&nresource->base.reference, 1);
 108         if (nresource->data == NULL) {
 109                 FREE(nresource);
 110                 return NULL;
 111         }
 112         return &nresource->base;
 113 }
 114
 115 static struct pipe_resource *noop_resource_from_handle(struct pipe_screen *screen,
 116                                                         const struct pipe_resource *templ,
 117                                                         struct winsys_handle *handle)
 118 {
 119         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 120         struct pipe_screen *oscreen = noop_screen->oscreen;
 121         struct pipe_resource *result;
 122         struct pipe_resource *noop_resource;
 123
 124         result = oscreen->resource_from_handle(oscreen, templ, handle);
 125         noop_resource = noop_resource_create(screen, result);
 126         pipe_resource_reference(&result, NULL);
 127         return noop_resource;
 128 }
 129
 130 static boolean noop_resource_get_handle(struct pipe_screen *screen,
 131                                         struct pipe_resource *resource,
 132                                         struct winsys_handle *handle)
 133 {
 134         return FALSE;
 135 }
 136
 137 static void noop_resource_destroy(struct pipe_screen *screen,
 138                                         struct pipe_resource *resource)
 139 {
 140         struct noop_resource *nresource = (struct noop_resource *)resource;
 141
 142         FREE(nresource->data);
 143         FREE(resource);
 144 }
 145
 146
 147 /*
 148  * transfer
 149  */
 150 static void *noop_transfer_map(struct pipe_context *pipe,
 151                                struct pipe_resource *resource,
 152                                unsigned level,
 153                                enum pipe_transfer_usage usage,
 154                                const struct pipe_box *box,
 155                                struct pipe_transfer **ptransfer)
 156 {
 157    struct pipe_transfer *transfer;
 158    struct noop_resource *nresource = (struct noop_resource *)resource;
 159
 160    transfer = CALLOC_STRUCT(pipe_transfer);
 161    if (transfer == NULL)
 162            return NULL;
 163    pipe_resource_reference(&transfer->resource, resource);
 164    transfer->level = level;
 165    transfer->usage = usage;
 166    transfer->box = *box;
 167    transfer->stride = 1;
 168    transfer->layer_stride = 1;
 169    *ptransfer = transfer;
 170
 171    return nresource->data;
 172 }
 173
 174 static void noop_transfer_flush_region(struct pipe_context *pipe,
 175                                         struct pipe_transfer *transfer,
 176                                         const struct pipe_box *box)
 177 {
 178 }
 179
 180 static void noop_transfer_unmap(struct pipe_context *pipe,
 181                                 struct pipe_transfer *transfer)
 182 {
 183    pipe_resource_reference(&transfer->resource, NULL);
 184    FREE(transfer);
 185 }
 186
 187 static void noop_transfer_inline_write(struct pipe_context *pipe,
 188                                         struct pipe_resource *resource,
 189                                         unsigned level,
 190                                         unsigned usage,
 191                                         const struct pipe_box *box,
 192                                         const void *data,
 193                                         unsigned stride,
 194                                         unsigned layer_stride)
 195 {
 196 }
 197
 198
 199 /*
 200  * clear/copy
 201  */
 202 static void noop_clear(struct pipe_context *ctx, unsigned buffers,
 203                        const union pipe_color_union *color, double depth, unsigned stencil)
 204 {
 205 }
 206
 207 static void noop_clear_render_target(struct pipe_context *ctx,
 208                                      struct pipe_surface *dst,
 209                                      const union pipe_color_union *color,
 210                                      unsigned dstx, unsigned dsty,
 211                                      unsigned width, unsigned height)
 212 {
 213 }
 214
 215 static void noop_clear_depth_stencil(struct pipe_context *ctx,
 216                                      struct pipe_surface *dst,
 217                                      unsigned clear_flags,
 218                                      double depth,
 219                                      unsigned stencil,
 220                                      unsigned dstx, unsigned dsty,
 221                                      unsigned width, unsigned height)
 222 {
 223 }
 224
 225 static void noop_resource_copy_region(struct pipe_context *ctx,
 226                                       struct pipe_resource *dst,
 227                                       unsigned dst_level,
 228                                       unsigned dstx, unsigned dsty, unsigned dstz,
 229                                       struct pipe_resource *src,
 230                                       unsigned src_level,
 231                                       const struct pipe_box *src_box)
 232 {
 233 }
 234
 235
 236 static void noop_blit(struct pipe_context *ctx,
 237                       const struct pipe_blit_info *info)
 238 {
 239 }
 240
 241
 242 static void
 243 noop_flush_resource(struct pipe_context *ctx,
 244                     struct pipe_resource *resource)
 245 {
 246 }
 247
 248
 249 /*
 250  * context
 251  */
 252 static void noop_flush(struct pipe_context *ctx,
 253                        struct pipe_fence_handle **fence,
 254                        unsigned flags)
 255 {
 256 }
 257
 258 static void noop_destroy_context(struct pipe_context *ctx)
 259 {
 260         FREE(ctx);
 261 }
 262
 263 static struct pipe_context *noop_create_context(struct pipe_screen *screen,
 264                                                 void *priv, unsigned flags)
 265 {
 266         struct pipe_context *ctx = CALLOC_STRUCT(pipe_context);
 267
 268         if (ctx == NULL)
 269                 return NULL;
 270         ctx->screen = screen;
 271         ctx->priv = priv;
 272         ctx->destroy = noop_destroy_context;
 273         ctx->flush = noop_flush;
 274         ctx->clear = noop_clear;
 275         ctx->clear_render_target = noop_clear_render_target;
 276         ctx->clear_depth_stencil = noop_clear_depth_stencil;
 277         ctx->resource_copy_region = noop_resource_copy_region;
 278         ctx->blit = noop_blit;
 279         ctx->flush_resource = noop_flush_resource;
 280         ctx->create_query = noop_create_query;
 281         ctx->destroy_query = noop_destroy_query;
 282         ctx->begin_query = noop_begin_query;
 283         ctx->end_query = noop_end_query;
 284         ctx->get_query_result = noop_get_query_result;
 285         ctx->transfer_map = noop_transfer_map;
 286         ctx->transfer_flush_region = noop_transfer_flush_region;
 287         ctx->transfer_unmap = noop_transfer_unmap;
 288         ctx->transfer_inline_write = noop_transfer_inline_write;
 289         noop_init_state_functions(ctx);
 290
 291         return ctx;
 292 }
 293
 294
 295 /*
 296  * pipe_screen
 297  */
 298 static void noop_flush_frontbuffer(struct pipe_screen *_screen,
 299                                    struct pipe_resource *resource,
 300                                    unsigned level, unsigned layer,
 301                                    void *context_private, struct pipe_box *box)
 302 {
 303 }
 304
 305 static const char *noop_get_vendor(struct pipe_screen* pscreen)
 306 {
 307         return "X.Org";
 308 }
 309
 310 static const char *noop_get_device_vendor(struct pipe_screen* pscreen)
 311 {
 312         return "NONE";
 313 }
 314
 315 static const char *noop_get_name(struct pipe_screen* pscreen)
 316 {
 317         return "NOOP";
 318 }
 319
 320 static int noop_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 321 {
 322         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 323
 324         return screen->get_param(screen, param);
 325 }
 326
 327 static float noop_get_paramf(struct pipe_screen* pscreen,
 328                              enum pipe_capf param)
 329 {
 330         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 331
 332         return screen->get_paramf(screen, param);
 333 }
 334
 335 static int noop_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 336 {
 337         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 338
 339         return screen->get_shader_param(screen, shader, param);
 340 }
 341
 342 static boolean noop_is_format_supported(struct pipe_screen* pscreen,
 343                                         enum pipe_format format,
 344                                         enum pipe_texture_target target,
 345                                         unsigned sample_count,
 346                                         unsigned usage)
 347 {
 348         struct pipe_screen *screen = ((struct noop_pipe_screen*)pscreen)->oscreen;
 349
 350         return screen->is_format_supported(screen, format, target, sample_count, usage);
 351 }
 352
 353 static uint64_t noop_get_timestamp(struct pipe_screen *pscreen)
 354 {
 355         return 0;
 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_device_vendor = noop_get_device_vendor;
 387         screen->get_param = noop_get_param;
 388         screen->get_shader_param = noop_get_shader_param;
 389         screen->get_paramf = noop_get_paramf;
 390         screen->is_format_supported = noop_is_format_supported;
 391         screen->context_create = noop_create_context;
 392         screen->resource_create = noop_resource_create;
 393         screen->resource_from_handle = noop_resource_from_handle;
 394         screen->resource_get_handle = noop_resource_get_handle;
 395         screen->resource_destroy = noop_resource_destroy;
 396         screen->flush_frontbuffer = noop_flush_frontbuffer;
 397         screen->get_timestamp = noop_get_timestamp;
 398
 399         return screen;
 400 }