src/gallium/drivers/r600/r600_pipe.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   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 "r600_pipe.h"
  24 #include "r600_public.h"
  25 #include "r600_isa.h"
  26 #include "evergreen_compute.h"
  27 #include "r600d.h"
  28
  29 #include "sb/sb_public.h"
  30
  31 #include <errno.h>
  32 #include "pipe/p_shader_tokens.h"
  33 #include "util/u_debug.h"
  34 #include "util/u_memory.h"
  35 #include "util/u_simple_shaders.h"
  36 #include "util/u_upload_mgr.h"
  37 #include "util/u_math.h"
  38 #include "vl/vl_decoder.h"
  39 #include "vl/vl_video_buffer.h"
  40 #include "radeon/radeon_video.h"
  41 #include "radeon/radeon_uvd.h"
  42 #include "os/os_time.h"
  43
  44 static const struct debug_named_value r600_debug_options[] = {
  45         /* features */
  46 #if defined(R600_USE_LLVM)
  47         { "llvm", DBG_LLVM, "Enable the LLVM shader compiler" },
  48 #endif
  49         { "nocpdma", DBG_NO_CP_DMA, "Disable CP DMA" },
  50
  51         /* shader backend */
  52         { "nosb", DBG_NO_SB, "Disable sb backend for graphics shaders" },
  53         { "sbcl", DBG_SB_CS, "Enable sb backend for compute shaders" },
  54         { "sbdry", DBG_SB_DRY_RUN, "Don't use optimized bytecode (just print the dumps)" },
  55         { "sbstat", DBG_SB_STAT, "Print optimization statistics for shaders" },
  56         { "sbdump", DBG_SB_DUMP, "Print IR dumps after some optimization passes" },
  57         { "sbnofallback", DBG_SB_NO_FALLBACK, "Abort on errors instead of fallback" },
  58         { "sbdisasm", DBG_SB_DISASM, "Use sb disassembler for shader dumps" },
  59         { "sbsafemath", DBG_SB_SAFEMATH, "Disable unsafe math optimizations" },
  60
  61         DEBUG_NAMED_VALUE_END /* must be last */
  62 };
  63
  64 /*
  65  * pipe_context
  66  */
  67
  68 static void r600_destroy_context(struct pipe_context *context)
  69 {
  70         struct r600_context *rctx = (struct r600_context *)context;
  71
  72         r600_isa_destroy(rctx->isa);
  73
  74         r600_sb_context_destroy(rctx->sb_context);
  75
  76         pipe_resource_reference((struct pipe_resource**)&rctx->dummy_cmask, NULL);
  77         pipe_resource_reference((struct pipe_resource**)&rctx->dummy_fmask, NULL);
  78
  79         if (rctx->dummy_pixel_shader) {
  80                 rctx->b.b.delete_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
  81         }
  82         if (rctx->custom_dsa_flush) {
  83                 rctx->b.b.delete_depth_stencil_alpha_state(&rctx->b.b, rctx->custom_dsa_flush);
  84         }
  85         if (rctx->custom_blend_resolve) {
  86                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_resolve);
  87         }
  88         if (rctx->custom_blend_decompress) {
  89                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_decompress);
  90         }
  91         if (rctx->custom_blend_fastclear) {
  92                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_fastclear);
  93         }
  94         util_unreference_framebuffer_state(&rctx->framebuffer.state);
  95
  96         if (rctx->blitter) {
  97                 util_blitter_destroy(rctx->blitter);
  98         }
  99         if (rctx->allocator_fetch_shader) {
 100                 u_suballocator_destroy(rctx->allocator_fetch_shader);
 101         }
 102
 103         r600_release_command_buffer(&rctx->start_cs_cmd);
 104
 105         FREE(rctx->start_compute_cs_cmd.buf);
 106
 107         r600_common_context_cleanup(&rctx->b);
 108         FREE(rctx);
 109 }
 110
 111 static struct pipe_context *r600_create_context(struct pipe_screen *screen, void *priv)
 112 {
 113         struct r600_context *rctx = CALLOC_STRUCT(r600_context);
 114         struct r600_screen* rscreen = (struct r600_screen *)screen;
 115         struct radeon_winsys *ws = rscreen->b.ws;
 116
 117         if (rctx == NULL)
 118                 return NULL;
 119
 120         rctx->b.b.screen = screen;
 121         rctx->b.b.priv = priv;
 122         rctx->b.b.destroy = r600_destroy_context;
 123
 124         if (!r600_common_context_init(&rctx->b, &rscreen->b))
 125                 goto fail;
 126
 127         rctx->screen = rscreen;
 128         rctx->keep_tiling_flags = rscreen->b.info.drm_minor >= 12;
 129
 130         r600_init_blit_functions(rctx);
 131
 132         if (rscreen->b.info.has_uvd) {
 133                 rctx->b.b.create_video_codec = r600_uvd_create_decoder;
 134                 rctx->b.b.create_video_buffer = r600_video_buffer_create;
 135         } else {
 136                 rctx->b.b.create_video_codec = vl_create_decoder;
 137                 rctx->b.b.create_video_buffer = vl_video_buffer_create;
 138         }
 139
 140         r600_init_common_state_functions(rctx);
 141
 142         switch (rctx->b.chip_class) {
 143         case R600:
 144         case R700:
 145                 r600_init_state_functions(rctx);
 146                 r600_init_atom_start_cs(rctx);
 147                 rctx->custom_dsa_flush = r600_create_db_flush_dsa(rctx);
 148                 rctx->custom_blend_resolve = rctx->b.chip_class == R700 ? r700_create_resolve_blend(rctx)
 149                                                                       : r600_create_resolve_blend(rctx);
 150                 rctx->custom_blend_decompress = r600_create_decompress_blend(rctx);
 151                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_RV610 ||
 152                                            rctx->b.family == CHIP_RV620 ||
 153                                            rctx->b.family == CHIP_RS780 ||
 154                                            rctx->b.family == CHIP_RS880 ||
 155                                            rctx->b.family == CHIP_RV710);
 156                 break;
 157         case EVERGREEN:
 158         case CAYMAN:
 159                 evergreen_init_state_functions(rctx);
 160                 evergreen_init_atom_start_cs(rctx);
 161                 evergreen_init_atom_start_compute_cs(rctx);
 162                 rctx->custom_dsa_flush = evergreen_create_db_flush_dsa(rctx);
 163                 rctx->custom_blend_resolve = evergreen_create_resolve_blend(rctx);
 164                 rctx->custom_blend_decompress = evergreen_create_decompress_blend(rctx);
 165                 rctx->custom_blend_fastclear = evergreen_create_fastclear_blend(rctx);
 166                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_CEDAR ||
 167                                            rctx->b.family == CHIP_PALM ||
 168                                            rctx->b.family == CHIP_SUMO ||
 169                                            rctx->b.family == CHIP_SUMO2 ||
 170                                            rctx->b.family == CHIP_CAICOS ||
 171                                            rctx->b.family == CHIP_CAYMAN ||
 172                                            rctx->b.family == CHIP_ARUBA);
 173                 break;
 174         default:
 175                 R600_ERR("Unsupported chip class %d.\n", rctx->b.chip_class);
 176                 goto fail;
 177         }
 178
 179         rctx->b.rings.gfx.cs = ws->cs_create(ws, RING_GFX,
 180                                              r600_context_gfx_flush, rctx,
 181                                              rscreen->b.trace_bo ?
 182                                                      rscreen->b.trace_bo->cs_buf : NULL);
 183         rctx->b.rings.gfx.flush = r600_context_gfx_flush;
 184
 185         rctx->allocator_fetch_shader = u_suballocator_create(&rctx->b.b, 64 * 1024, 256,
 186                                                              0, PIPE_USAGE_DEFAULT, FALSE);
 187         if (!rctx->allocator_fetch_shader)
 188                 goto fail;
 189
 190         rctx->isa = calloc(1, sizeof(struct r600_isa));
 191         if (!rctx->isa || r600_isa_init(rctx, rctx->isa))
 192                 goto fail;
 193
 194         if (rscreen->b.debug_flags & DBG_FORCE_DMA)
 195                 rctx->b.b.resource_copy_region = rctx->b.dma_copy;
 196
 197         rctx->blitter = util_blitter_create(&rctx->b.b);
 198         if (rctx->blitter == NULL)
 199                 goto fail;
 200         util_blitter_set_texture_multisample(rctx->blitter, rscreen->has_msaa);
 201         rctx->blitter->draw_rectangle = r600_draw_rectangle;
 202
 203         r600_begin_new_cs(rctx);
 204         r600_query_init_backend_mask(&rctx->b); /* this emits commands and must be last */
 205
 206         rctx->dummy_pixel_shader =
 207                 util_make_fragment_cloneinput_shader(&rctx->b.b, 0,
 208                                                      TGSI_SEMANTIC_GENERIC,
 209                                                      TGSI_INTERPOLATE_CONSTANT);
 210         rctx->b.b.bind_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
 211
 212         return &rctx->b.b;
 213
 214 fail:
 215         r600_destroy_context(&rctx->b.b);
 216         return NULL;
 217 }
 218
 219 /*
 220  * pipe_screen
 221  */
 222
 223 static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 224 {
 225         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 226         enum radeon_family family = rscreen->b.family;
 227
 228         switch (param) {
 229         /* Supported features (boolean caps). */
 230         case PIPE_CAP_NPOT_TEXTURES:
 231         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 232         case PIPE_CAP_TWO_SIDED_STENCIL:
 233         case PIPE_CAP_ANISOTROPIC_FILTER:
 234         case PIPE_CAP_POINT_SPRITE:
 235         case PIPE_CAP_OCCLUSION_QUERY:
 236         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 237         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 238         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 239         case PIPE_CAP_TEXTURE_SWIZZLE:
 240         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 241         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 242         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 243         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 244         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 245         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 246         case PIPE_CAP_SM3:
 247         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 248         case PIPE_CAP_PRIMITIVE_RESTART:
 249         case PIPE_CAP_CONDITIONAL_RENDER:
 250         case PIPE_CAP_TEXTURE_BARRIER:
 251         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 252         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 253         case PIPE_CAP_TGSI_INSTANCEID:
 254         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 255         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 256         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 257         case PIPE_CAP_USER_INDEX_BUFFERS:
 258         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 259         case PIPE_CAP_START_INSTANCE:
 260         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 261         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 262         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 263         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 264         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 265         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 266         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 267         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 268         case PIPE_CAP_SAMPLE_SHADING:
 269         case PIPE_CAP_CLIP_HALFZ:
 270                 return 1;
 271
 272         case PIPE_CAP_COMPUTE:
 273                 return rscreen->b.chip_class > R700;
 274
 275         case PIPE_CAP_TGSI_TEXCOORD:
 276                 return 0;
 277
 278         case PIPE_CAP_FAKE_SW_MSAA:
 279                 return 0;
 280
 281         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 282                 return MIN2(rscreen->b.info.vram_size, 0xFFFFFFFF);
 283
 284         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 285                 return R600_MAP_BUFFER_ALIGNMENT;
 286
 287         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 288                 return 256;
 289
 290         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 291                 return 1;
 292
 293         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 294                 if (family >= CHIP_CEDAR)
 295                    return 330;
 296                 /* pre-evergreen geom shaders need newer kernel */
 297                 if (rscreen->b.info.drm_minor >= 37)
 298                    return 330;
 299                 return 140;
 300
 301         /* Supported except the original R600. */
 302         case PIPE_CAP_INDEP_BLEND_ENABLE:
 303         case PIPE_CAP_INDEP_BLEND_FUNC:
 304                 /* R600 doesn't support per-MRT blends */
 305                 return family == CHIP_R600 ? 0 : 1;
 306
 307         /* Supported on Evergreen. */
 308         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 309         case PIPE_CAP_CUBE_MAP_ARRAY:
 310         case PIPE_CAP_TEXTURE_GATHER_SM5:
 311         case PIPE_CAP_TEXTURE_QUERY_LOD:
 312         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 313                 return family >= CHIP_CEDAR ? 1 : 0;
 314         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 315                 return family >= CHIP_CEDAR ? 4 : 0;
 316
 317         /* Unsupported features. */
 318         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 319         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 320         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 321         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 322         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 323         case PIPE_CAP_USER_VERTEX_BUFFERS:
 324         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 325         case PIPE_CAP_DRAW_INDIRECT:
 326         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 327         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 328                 return 0;
 329
 330         /* Stream output. */
 331         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 332                 return rscreen->b.has_streamout ? 4 : 0;
 333         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 334                 return rscreen->b.has_streamout ? 1 : 0;
 335         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 336         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 337                 return 32*4;
 338
 339         /* Geometry shader output. */
 340         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 341                 return 1024;
 342         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 343                 return 16384;
 344         case PIPE_CAP_MAX_VERTEX_STREAMS:
 345                 return 1;
 346
 347         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 348                 return 2047;
 349
 350         /* Texturing. */
 351         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 352         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 353                 if (family >= CHIP_CEDAR)
 354                         return 15;
 355                 else
 356                         return 14;
 357         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 358                 /* textures support 8192, but layered rendering supports 2048 */
 359                 return 12;
 360         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 361                 /* textures support 8192, but layered rendering supports 2048 */
 362                 return rscreen->b.info.drm_minor >= 9 ? 2048 : 0;
 363
 364         /* Render targets. */
 365         case PIPE_CAP_MAX_RENDER_TARGETS:
 366                 /* XXX some r6xx are buggy and can only do 4 */
 367                 return 8;
 368
 369         case PIPE_CAP_MAX_VIEWPORTS:
 370                 return 16;
 371
 372         /* Timer queries, present when the clock frequency is non zero. */
 373         case PIPE_CAP_QUERY_TIME_ELAPSED:
 374                 return rscreen->b.info.r600_clock_crystal_freq != 0;
 375         case PIPE_CAP_QUERY_TIMESTAMP:
 376                 return rscreen->b.info.drm_minor >= 20 &&
 377                        rscreen->b.info.r600_clock_crystal_freq != 0;
 378
 379         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 380         case PIPE_CAP_MIN_TEXEL_OFFSET:
 381                 return -8;
 382
 383         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 384         case PIPE_CAP_MAX_TEXEL_OFFSET:
 385                 return 7;
 386
 387         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 388                 return PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600;
 389         case PIPE_CAP_ENDIANNESS:
 390                 return PIPE_ENDIAN_LITTLE;
 391
 392         case PIPE_CAP_VENDOR_ID:
 393                 return 0x1002;
 394         case PIPE_CAP_DEVICE_ID:
 395                 return rscreen->b.info.pci_id;
 396         case PIPE_CAP_ACCELERATED:
 397                 return 1;
 398         case PIPE_CAP_VIDEO_MEMORY:
 399                 return rscreen->b.info.vram_size >> 20;
 400         case PIPE_CAP_UMA:
 401                 return 0;
 402         }
 403         return 0;
 404 }
 405
 406 static int r600_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 407 {
 408         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 409
 410         switch(shader)
 411         {
 412         case PIPE_SHADER_FRAGMENT:
 413         case PIPE_SHADER_VERTEX:
 414         case PIPE_SHADER_COMPUTE:
 415                 break;
 416         case PIPE_SHADER_GEOMETRY:
 417                 if (rscreen->b.family >= CHIP_CEDAR)
 418                         break;
 419                 /* pre-evergreen geom shaders need newer kernel */
 420                 if (rscreen->b.info.drm_minor >= 37)
 421                         break;
 422                 return 0;
 423         default:
 424                 /* XXX: support tessellation on Evergreen */
 425                 return 0;
 426         }
 427
 428         switch (param) {
 429         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 430         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 431         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 432         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 433                 return 16384;
 434         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 435                 return 32;
 436         case PIPE_SHADER_CAP_MAX_INPUTS:
 437                 return shader == PIPE_SHADER_VERTEX ? 16 : 32;
 438         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 439                 return shader == PIPE_SHADER_FRAGMENT ? 8 : 32;
 440         case PIPE_SHADER_CAP_MAX_TEMPS:
 441                 return 256; /* Max native temporaries. */
 442         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 443                 if (shader == PIPE_SHADER_COMPUTE) {
 444                         uint64_t max_const_buffer_size;
 445                         pscreen->get_compute_param(pscreen,
 446                                 PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE,
 447                                 &max_const_buffer_size);
 448                         return max_const_buffer_size;
 449
 450                 } else {
 451                         return R600_MAX_CONST_BUFFER_SIZE;
 452                 }
 453         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 454                 return R600_MAX_USER_CONST_BUFFERS;
 455         case PIPE_SHADER_CAP_MAX_PREDS:
 456                 return 0; /* nothing uses this */
 457         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 458                 return 1;
 459         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 460                 return 1;
 461         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 462         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 463         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 464         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 465                 return 1;
 466         case PIPE_SHADER_CAP_SUBROUTINES:
 467                 return 0;
 468         case PIPE_SHADER_CAP_INTEGERS:
 469                 return 1;
 470         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 471         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 472                 return 16;
 473         case PIPE_SHADER_CAP_PREFERRED_IR:
 474                 if (shader == PIPE_SHADER_COMPUTE) {
 475 #if HAVE_LLVM < 0x0306
 476                         return PIPE_SHADER_IR_LLVM;
 477 #else
 478                         return PIPE_SHADER_IR_NATIVE;
 479 #endif
 480                 } else {
 481                         return PIPE_SHADER_IR_TGSI;
 482                 }
 483         case PIPE_SHADER_CAP_DOUBLES:
 484                 return 0;
 485         }
 486         return 0;
 487 }
 488
 489 static void r600_destroy_screen(struct pipe_screen* pscreen)
 490 {
 491         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 492
 493         if (rscreen == NULL)
 494                 return;
 495
 496         if (!rscreen->b.ws->unref(rscreen->b.ws))
 497                 return;
 498
 499         if (rscreen->global_pool) {
 500                 compute_memory_pool_delete(rscreen->global_pool);
 501         }
 502
 503         r600_destroy_common_screen(&rscreen->b);
 504 }
 505
 506 static struct pipe_resource *r600_resource_create(struct pipe_screen *screen,
 507                                                   const struct pipe_resource *templ)
 508 {
 509         if (templ->target == PIPE_BUFFER &&
 510             (templ->bind & PIPE_BIND_GLOBAL))
 511                 return r600_compute_global_buffer_create(screen, templ);
 512
 513         return r600_resource_create_common(screen, templ);
 514 }
 515
 516 struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
 517 {
 518         struct r600_screen *rscreen = CALLOC_STRUCT(r600_screen);
 519
 520         if (rscreen == NULL) {
 521                 return NULL;
 522         }
 523
 524         /* Set functions first. */
 525         rscreen->b.b.context_create = r600_create_context;
 526         rscreen->b.b.destroy = r600_destroy_screen;
 527         rscreen->b.b.get_param = r600_get_param;
 528         rscreen->b.b.get_shader_param = r600_get_shader_param;
 529         rscreen->b.b.resource_create = r600_resource_create;
 530
 531         if (!r600_common_screen_init(&rscreen->b, ws)) {
 532                 FREE(rscreen);
 533                 return NULL;
 534         }
 535
 536         if (rscreen->b.info.chip_class >= EVERGREEN) {
 537                 rscreen->b.b.is_format_supported = evergreen_is_format_supported;
 538         } else {
 539                 rscreen->b.b.is_format_supported = r600_is_format_supported;
 540         }
 541
 542         rscreen->b.debug_flags |= debug_get_flags_option("R600_DEBUG", r600_debug_options, 0);
 543         if (debug_get_bool_option("R600_DEBUG_COMPUTE", FALSE))
 544                 rscreen->b.debug_flags |= DBG_COMPUTE;
 545         if (debug_get_bool_option("R600_DUMP_SHADERS", FALSE))
 546                 rscreen->b.debug_flags |= DBG_FS | DBG_VS | DBG_GS | DBG_PS | DBG_CS;
 547         if (!debug_get_bool_option("R600_HYPERZ", TRUE))
 548                 rscreen->b.debug_flags |= DBG_NO_HYPERZ;
 549         if (debug_get_bool_option("R600_LLVM", FALSE))
 550                 rscreen->b.debug_flags |= DBG_LLVM;
 551
 552         if (rscreen->b.family == CHIP_UNKNOWN) {
 553                 fprintf(stderr, "r600: Unknown chipset 0x%04X\n", rscreen->b.info.pci_id);
 554                 FREE(rscreen);
 555                 return NULL;
 556         }
 557
 558         /* Figure out streamout kernel support. */
 559         switch (rscreen->b.chip_class) {
 560         case R600:
 561                 if (rscreen->b.family < CHIP_RS780) {
 562                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 563                 } else {
 564                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 23;
 565                 }
 566                 break;
 567         case R700:
 568                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 17;
 569                 break;
 570         case EVERGREEN:
 571         case CAYMAN:
 572                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 573                 break;
 574         default:
 575                 rscreen->b.has_streamout = FALSE;
 576                 break;
 577         }
 578
 579         /* MSAA support. */
 580         switch (rscreen->b.chip_class) {
 581         case R600:
 582         case R700:
 583                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 22;
 584                 rscreen->has_compressed_msaa_texturing = false;
 585                 break;
 586         case EVERGREEN:
 587                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 588                 rscreen->has_compressed_msaa_texturing = rscreen->b.info.drm_minor >= 24;
 589                 break;
 590         case CAYMAN:
 591                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 592                 rscreen->has_compressed_msaa_texturing = true;
 593                 break;
 594         default:
 595                 rscreen->has_msaa = FALSE;
 596                 rscreen->has_compressed_msaa_texturing = false;
 597         }
 598
 599         rscreen->b.has_cp_dma = rscreen->b.info.drm_minor >= 27 &&
 600                               !(rscreen->b.debug_flags & DBG_NO_CP_DMA);
 601
 602         rscreen->global_pool = compute_memory_pool_new(rscreen);
 603
 604         /* Create the auxiliary context. This must be done last. */
 605         rscreen->b.aux_context = rscreen->b.b.context_create(&rscreen->b.b, NULL);
 606
 607 #if 0 /* This is for testing whether aux_context and buffer clearing work correctly. */
 608         struct pipe_resource templ = {};
 609
 610         templ.width0 = 4;
 611         templ.height0 = 2048;
 612         templ.depth0 = 1;
 613         templ.array_size = 1;
 614         templ.target = PIPE_TEXTURE_2D;
 615         templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
 616         templ.usage = PIPE_USAGE_DEFAULT;
 617
 618         struct r600_resource *res = r600_resource(rscreen->screen.resource_create(&rscreen->screen, &templ));
 619         unsigned char *map = ws->buffer_map(res->cs_buf, NULL, PIPE_TRANSFER_WRITE);
 620
 621         memset(map, 0, 256);
 622
 623         r600_screen_clear_buffer(rscreen, &res->b.b, 4, 4, 0xCC);
 624         r600_screen_clear_buffer(rscreen, &res->b.b, 8, 4, 0xDD);
 625         r600_screen_clear_buffer(rscreen, &res->b.b, 12, 4, 0xEE);
 626         r600_screen_clear_buffer(rscreen, &res->b.b, 20, 4, 0xFF);
 627         r600_screen_clear_buffer(rscreen, &res->b.b, 32, 20, 0x87);
 628
 629         ws->buffer_wait(res->buf, RADEON_USAGE_WRITE);
 630
 631         int i;
 632         for (i = 0; i < 256; i++) {
 633                 printf("%02X", map[i]);
 634                 if (i % 16 == 15)
 635                         printf("\n");
 636         }
 637 #endif
 638
 639         return &rscreen->b.b;
 640 }