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 unsigned noop_is_resource_referenced(struct pipe_context *pipe,
  91                                                 struct pipe_resource *resource,
  92                                                 unsigned level, int layer)
  93 {
  94         return PIPE_UNREFERENCED;
  95 }
  96
  97 static struct pipe_resource *noop_resource_create(struct pipe_screen *screen,
  98                                                 const struct pipe_resource *templ)
  99 {
 100         struct noop_resource *nresource;
 101         unsigned stride;
 102
 103         nresource = CALLOC_STRUCT(noop_resource);
 104         if (nresource == NULL)
 105                 return NULL;
 106
 107         stride = util_format_get_stride(templ->format, templ->width0);
 108         nresource->base = *templ;
 109         nresource->base.screen = screen;
 110         nresource->size = stride * templ->height0 * templ->depth0;
 111         nresource->data = malloc(nresource->size);
 112         pipe_reference_init(&nresource->base.reference, 1);
 113         if (nresource->data == NULL) {
 114                 FREE(nresource);
 115                 return NULL;
 116         }
 117         return &nresource->base;
 118 }
 119
 120 static struct pipe_resource *noop_resource_from_handle(struct pipe_screen *screen,
 121                                                         const struct pipe_resource *templ,
 122                                                         struct winsys_handle *handle)
 123 {
 124         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 125         struct pipe_screen *oscreen = noop_screen->oscreen;
 126         struct pipe_resource *result;
 127         struct pipe_resource *noop_resource;
 128
 129         result = oscreen->resource_from_handle(oscreen, templ, handle);
 130         noop_resource = noop_resource_create(screen, result);
 131         pipe_resource_reference(&result, NULL);
 132         return noop_resource;
 133 }
 134
 135 static boolean noop_resource_get_handle(struct pipe_screen *screen,
 136                                         struct pipe_resource *resource,
 137                                         struct winsys_handle *handle)
 138 {
 139         return FALSE;
 140 }
 141
 142 static void noop_resource_destroy(struct pipe_screen *screen,
 143                                         struct pipe_resource *resource)
 144 {
 145         struct noop_resource *nresource = (struct noop_resource *)resource;
 146
 147         free(nresource->data);
 148         FREE(resource);
 149 }
 150
 151 static struct pipe_resource *noop_user_buffer_create(struct pipe_screen *screen,
 152                                                         void *ptr, unsigned bytes,
 153                                                         unsigned bind)
 154 {
 155         struct pipe_resource templ;
 156
 157         templ.target = PIPE_BUFFER;
 158         templ.format = PIPE_FORMAT_R8_UNORM;
 159         templ.usage = PIPE_USAGE_IMMUTABLE;
 160         templ.bind = bind;
 161         templ.width0 = bytes;
 162         templ.height0 = 1;
 163         templ.depth0 = 1;
 164         templ.flags = 0;
 165         return noop_resource_create(screen, &templ);
 166 }
 167
 168
 169 /*
 170  * transfer
 171  */
 172 static struct pipe_transfer *noop_get_transfer(struct pipe_context *context,
 173                                                 struct pipe_resource *resource,
 174                                                 unsigned level,
 175                                                 enum pipe_transfer_usage usage,
 176                                                 const struct pipe_box *box)
 177 {
 178         struct pipe_transfer *transfer;
 179
 180         transfer = CALLOC_STRUCT(pipe_transfer);
 181         if (transfer == NULL)
 182                 return NULL;
 183         pipe_resource_reference(&transfer->resource, resource);
 184         transfer->level = level;
 185         transfer->usage = usage;
 186         transfer->box = *box;
 187         transfer->stride = 1;
 188         transfer->layer_stride = 1;
 189         return transfer;
 190 }
 191
 192 static void *noop_transfer_map(struct pipe_context *pipe,
 193                                 struct pipe_transfer *transfer)
 194 {
 195         struct noop_resource *nresource = (struct noop_resource *)transfer->resource;
 196
 197         return nresource->data;
 198 }
 199
 200 static void noop_transfer_flush_region(struct pipe_context *pipe,
 201                                         struct pipe_transfer *transfer,
 202                                         const struct pipe_box *box)
 203 {
 204 }
 205
 206 static void noop_transfer_unmap(struct pipe_context *pipe,
 207                                 struct pipe_transfer *transfer)
 208 {
 209 }
 210
 211 static void noop_transfer_destroy(struct pipe_context *pipe,
 212                                         struct pipe_transfer *transfer)
 213 {
 214         pipe_resource_reference(&transfer->resource, NULL);
 215         FREE(transfer);
 216 }
 217
 218 static void noop_transfer_inline_write(struct pipe_context *pipe,
 219                                         struct pipe_resource *resource,
 220                                         unsigned level,
 221                                         unsigned usage,
 222                                         const struct pipe_box *box,
 223                                         const void *data,
 224                                         unsigned stride,
 225                                         unsigned layer_stride)
 226 {
 227 }
 228
 229
 230 /*
 231  * clear/copy
 232  */
 233 static void noop_clear(struct pipe_context *ctx, unsigned buffers,
 234                         const float *rgba, double depth, unsigned stencil)
 235 {
 236 }
 237
 238 static void noop_clear_render_target(struct pipe_context *ctx,
 239                                      struct pipe_surface *dst,
 240                                      const float *rgba,
 241                                      unsigned dstx, unsigned dsty,
 242                                      unsigned width, unsigned height)
 243 {
 244 }
 245
 246 static void noop_clear_depth_stencil(struct pipe_context *ctx,
 247                                      struct pipe_surface *dst,
 248                                      unsigned clear_flags,
 249                                      double depth,
 250                                      unsigned stencil,
 251                                      unsigned dstx, unsigned dsty,
 252                                      unsigned width, unsigned height)
 253 {
 254 }
 255
 256 static void noop_resource_copy_region(struct pipe_context *ctx,
 257                                       struct pipe_resource *dst,
 258                                       unsigned dst_level,
 259                                       unsigned dstx, unsigned dsty, unsigned dstz,
 260                                       struct pipe_resource *src,
 261                                       unsigned src_level,
 262                                       const struct pipe_box *src_box)
 263 {
 264 }
 265
 266
 267 /*
 268  * context
 269  */
 270 static void noop_flush(struct pipe_context *ctx, unsigned flags,
 271                         struct pipe_fence_handle **fence)
 272 {
 273 }
 274
 275 static void noop_destroy_context(struct pipe_context *ctx)
 276 {
 277         FREE(ctx);
 278 }
 279
 280 static struct pipe_context *noop_create_context(struct pipe_screen *screen, void *priv)
 281 {
 282         struct pipe_context *ctx = CALLOC_STRUCT(pipe_context);
 283
 284         if (ctx == NULL)
 285                 return NULL;
 286         ctx->winsys = screen->winsys;
 287         ctx->screen = screen;
 288         ctx->priv = priv;
 289         ctx->destroy = noop_destroy_context;
 290         ctx->flush = noop_flush;
 291         ctx->clear = noop_clear;
 292         ctx->clear_render_target = noop_clear_render_target;
 293         ctx->clear_depth_stencil = noop_clear_depth_stencil;
 294         ctx->resource_copy_region = noop_resource_copy_region;
 295         ctx->create_query = noop_create_query;
 296         ctx->destroy_query = noop_destroy_query;
 297         ctx->begin_query = noop_begin_query;
 298         ctx->end_query = noop_end_query;
 299         ctx->get_query_result = noop_get_query_result;
 300         ctx->get_transfer = noop_get_transfer;
 301         ctx->transfer_map = noop_transfer_map;
 302         ctx->transfer_flush_region = noop_transfer_flush_region;
 303         ctx->transfer_unmap = noop_transfer_unmap;
 304         ctx->transfer_destroy = noop_transfer_destroy;
 305         ctx->transfer_inline_write = noop_transfer_inline_write;
 306         ctx->is_resource_referenced = noop_is_resource_referenced;
 307         noop_init_state_functions(ctx);
 308
 309         return ctx;
 310 }
 311
 312
 313 /*
 314  * pipe_screen
 315  */
 316 static void noop_flush_frontbuffer(struct pipe_screen *_screen,
 317                                    struct pipe_resource *resource,
 318                                    unsigned level, unsigned layer,
 319                                    void *context_private)
 320 {
 321 }
 322
 323 static const char *noop_get_vendor(struct pipe_screen* pscreen)
 324 {
 325         return "X.Org";
 326 }
 327
 328 static const char *noop_get_name(struct pipe_screen* pscreen)
 329 {
 330         return "NOOP";
 331 }
 332
 333 static int noop_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 334 {
 335         switch (param) {
 336         /* Supported features (boolean caps). */
 337         case PIPE_CAP_NPOT_TEXTURES:
 338         case PIPE_CAP_TWO_SIDED_STENCIL:
 339         case PIPE_CAP_GLSL:
 340         case PIPE_CAP_OCCLUSION_QUERY:
 341         case PIPE_CAP_POINT_SPRITE:
 342         case PIPE_CAP_ANISOTROPIC_FILTER:
 343         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 344         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 345         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 346         case PIPE_CAP_TEXTURE_SWIZZLE:
 347         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 348
 349           return 1;
 350         case PIPE_CAP_DUAL_SOURCE_BLEND:
 351
 352         case PIPE_CAP_SM3:
 353         case PIPE_CAP_INDEP_BLEND_ENABLE:
 354         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 355         case PIPE_CAP_DEPTH_CLAMP:
 356         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 357         case PIPE_CAP_TIMER_QUERY:
 358         case PIPE_CAP_STREAM_OUTPUT:
 359         case PIPE_CAP_PRIMITIVE_RESTART:
 360         case PIPE_CAP_INDEP_BLEND_FUNC:
 361                 return 0;
 362
 363         /* Texturing. */
 364         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 365         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 366         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 367                 return 14;
 368         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 369                 return 16;
 370         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 371         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 372                 return 16;
 373
 374         /* Render targets. */
 375         case PIPE_CAP_MAX_RENDER_TARGETS:
 376                 return 8;
 377
 378         /* Fragment coordinate conventions. */
 379         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 380         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 381                 return 1;
 382         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 383         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 384                 return 0;
 385
 386         default:
 387                 return 0;
 388         }
 389 }
 390
 391 static float noop_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 392 {
 393         switch (param) {
 394         case PIPE_CAP_MAX_LINE_WIDTH:
 395         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 396         case PIPE_CAP_MAX_POINT_WIDTH:
 397         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 398                 return 8192.0f;
 399         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 400                 return 16.0f;
 401         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 402                 return 16.0f;
 403         default:
 404                 return 0.0f;
 405         }
 406 }
 407
 408 static int noop_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 409 {
 410         switch(shader)
 411         {
 412         case PIPE_SHADER_FRAGMENT:
 413         case PIPE_SHADER_VERTEX:
 414         case PIPE_SHADER_GEOMETRY:
 415                 break;
 416         default:
 417                 return 0;
 418         }
 419
 420         switch (param) {
 421         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 422         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 423         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 424         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 425                 return 16384;
 426         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 427                 return 8;
 428         case PIPE_SHADER_CAP_MAX_INPUTS:
 429                 return 16;
 430         case PIPE_SHADER_CAP_MAX_TEMPS:
 431                 return 256;
 432         case PIPE_SHADER_CAP_MAX_ADDRS:
 433                 return 1;
 434         case PIPE_SHADER_CAP_MAX_CONSTS:
 435                 return 256;
 436         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 437                 return 1;
 438         case PIPE_SHADER_CAP_MAX_PREDS:
 439                 return 0;
 440         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 441                 return 1;
 442         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 443         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 444         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 445         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 446                 return 1;
 447         default:
 448                 return 0;
 449         }
 450 }
 451
 452 static boolean noop_is_format_supported(struct pipe_screen* screen,
 453                                         enum pipe_format format,
 454                                         enum pipe_texture_target target,
 455                                         unsigned sample_count,
 456                                         unsigned usage,
 457                                         unsigned geom_flags)
 458 {
 459         return true;
 460 }
 461
 462 static void noop_destroy_screen(struct pipe_screen *screen)
 463 {
 464         struct noop_pipe_screen *noop_screen = (struct noop_pipe_screen*)screen;
 465         struct pipe_screen *oscreen = noop_screen->oscreen;
 466
 467         oscreen->destroy(oscreen);
 468         FREE(screen);
 469 }
 470
 471 struct pipe_screen *noop_screen_create(struct pipe_screen *oscreen)
 472 {
 473         struct noop_pipe_screen *noop_screen;
 474         struct pipe_screen *screen;
 475
 476         if (!debug_get_option_noop()) {
 477                 return oscreen;
 478         }
 479
 480         noop_screen = CALLOC_STRUCT(noop_pipe_screen);
 481         if (noop_screen == NULL) {
 482                 return NULL;
 483         }
 484         noop_screen->oscreen = oscreen;
 485         screen = &noop_screen->pscreen;
 486
 487         screen->winsys = oscreen->winsys;
 488         screen->destroy = noop_destroy_screen;
 489         screen->get_name = noop_get_name;
 490         screen->get_vendor = noop_get_vendor;
 491         screen->get_param = noop_get_param;
 492         screen->get_shader_param = noop_get_shader_param;
 493         screen->get_paramf = noop_get_paramf;
 494         screen->is_format_supported = noop_is_format_supported;
 495         screen->context_create = noop_create_context;
 496         screen->resource_create = noop_resource_create;
 497         screen->resource_from_handle = noop_resource_from_handle;
 498         screen->resource_get_handle = noop_resource_get_handle;
 499         screen->resource_destroy = noop_resource_destroy;
 500         screen->user_buffer_create = noop_user_buffer_create;
 501         screen->flush_frontbuffer = noop_flush_frontbuffer;
 502
 503         return screen;
 504 }