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_blitter.h"
  34 #include "util/u_debug.h"
  35 #include "util/u_memory.h"
  36 #include "util/u_simple_shaders.h"
  37 #include "util/u_upload_mgr.h"
  38 #include "util/u_math.h"
  39 #include "vl/vl_decoder.h"
  40 #include "vl/vl_video_buffer.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         { "nollvm", DBG_NO_LLVM, "Disable the LLVM shader compiler" },
  48 #endif
  49         { "nocpdma", DBG_NO_CP_DMA, "Disable CP DMA" },
  50         { "nodma", DBG_NO_ASYNC_DMA, "Disable asynchronous DMA" },
  51
  52         /* shader backend */
  53         { "nosb", DBG_NO_SB, "Disable sb backend for graphics shaders" },
  54         { "sbcl", DBG_SB_CS, "Enable sb backend for compute shaders" },
  55         { "sbdry", DBG_SB_DRY_RUN, "Don't use optimized bytecode (just print the dumps)" },
  56         { "sbstat", DBG_SB_STAT, "Print optimization statistics for shaders" },
  57         { "sbdump", DBG_SB_DUMP, "Print IR dumps after some optimization passes" },
  58         { "sbnofallback", DBG_SB_NO_FALLBACK, "Abort on errors instead of fallback" },
  59         { "sbdisasm", DBG_SB_DISASM, "Use sb disassembler for shader dumps" },
  60         { "sbsafemath", DBG_SB_SAFEMATH, "Disable unsafe math optimizations" },
  61
  62         DEBUG_NAMED_VALUE_END /* must be last */
  63 };
  64
  65 /*
  66  * pipe_context
  67  */
  68
  69 static void r600_flush(struct pipe_context *ctx, unsigned flags)
  70 {
  71         struct r600_context *rctx = (struct r600_context *)ctx;
  72         struct pipe_query *render_cond = NULL;
  73         unsigned render_cond_mode = 0;
  74         boolean render_cond_cond = FALSE;
  75
  76         if (rctx->b.rings.gfx.cs->cdw == rctx->initial_gfx_cs_size)
  77                 return;
  78
  79         rctx->b.rings.gfx.flushing = true;
  80         /* Disable render condition. */
  81         if (rctx->b.current_render_cond) {
  82                 render_cond = rctx->b.current_render_cond;
  83                 render_cond_cond = rctx->b.current_render_cond_cond;
  84                 render_cond_mode = rctx->b.current_render_cond_mode;
  85                 ctx->render_condition(ctx, NULL, FALSE, 0);
  86         }
  87
  88         r600_context_flush(rctx, flags);
  89         rctx->b.rings.gfx.flushing = false;
  90         r600_begin_new_cs(rctx);
  91
  92         /* Re-enable render condition. */
  93         if (render_cond) {
  94                 ctx->render_condition(ctx, render_cond, render_cond_cond, render_cond_mode);
  95         }
  96
  97         rctx->initial_gfx_cs_size = rctx->b.rings.gfx.cs->cdw;
  98 }
  99
 100 static void r600_flush_from_st(struct pipe_context *ctx,
 101                                struct pipe_fence_handle **fence,
 102                                unsigned flags)
 103 {
 104         struct r600_context *rctx = (struct r600_context *)ctx;
 105         unsigned fflags;
 106
 107         fflags = flags & PIPE_FLUSH_END_OF_FRAME ? RADEON_FLUSH_END_OF_FRAME : 0;
 108         if (fence) {
 109                 *fence = rctx->b.ws->cs_create_fence(rctx->b.rings.gfx.cs);
 110         }
 111         /* flush gfx & dma ring, order does not matter as only one can be live */
 112         if (rctx->b.rings.dma.cs) {
 113                 rctx->b.rings.dma.flush(rctx, fflags);
 114         }
 115         rctx->b.rings.gfx.flush(rctx, fflags);
 116 }
 117
 118 static void r600_flush_gfx_ring(void *ctx, unsigned flags)
 119 {
 120         r600_flush((struct pipe_context*)ctx, flags);
 121 }
 122
 123 static void r600_flush_dma_ring(void *ctx, unsigned flags)
 124 {
 125         struct r600_context *rctx = (struct r600_context *)ctx;
 126         struct radeon_winsys_cs *cs = rctx->b.rings.dma.cs;
 127
 128         if (!cs->cdw) {
 129                 return;
 130         }
 131
 132         rctx->b.rings.dma.flushing = true;
 133         rctx->b.ws->cs_flush(cs, flags, 0);
 134         rctx->b.rings.dma.flushing = false;
 135 }
 136
 137 static void r600_flush_from_winsys(void *ctx, unsigned flags)
 138 {
 139         struct r600_context *rctx = (struct r600_context *)ctx;
 140
 141         rctx->b.rings.gfx.flush(rctx, flags);
 142 }
 143
 144 static void r600_flush_dma_from_winsys(void *ctx, unsigned flags)
 145 {
 146         struct r600_context *rctx = (struct r600_context *)ctx;
 147
 148         rctx->b.rings.dma.flush(rctx, flags);
 149 }
 150
 151 static void r600_destroy_context(struct pipe_context *context)
 152 {
 153         struct r600_context *rctx = (struct r600_context *)context;
 154
 155         r600_isa_destroy(rctx->isa);
 156
 157         r600_sb_context_destroy(rctx->sb_context);
 158
 159         pipe_resource_reference((struct pipe_resource**)&rctx->dummy_cmask, NULL);
 160         pipe_resource_reference((struct pipe_resource**)&rctx->dummy_fmask, NULL);
 161
 162         if (rctx->dummy_pixel_shader) {
 163                 rctx->b.b.delete_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
 164         }
 165         if (rctx->custom_dsa_flush) {
 166                 rctx->b.b.delete_depth_stencil_alpha_state(&rctx->b.b, rctx->custom_dsa_flush);
 167         }
 168         if (rctx->custom_blend_resolve) {
 169                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_resolve);
 170         }
 171         if (rctx->custom_blend_decompress) {
 172                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_decompress);
 173         }
 174         if (rctx->custom_blend_fastclear) {
 175                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_fastclear);
 176         }
 177         util_unreference_framebuffer_state(&rctx->framebuffer.state);
 178
 179         if (rctx->blitter) {
 180                 util_blitter_destroy(rctx->blitter);
 181         }
 182         if (rctx->allocator_fetch_shader) {
 183                 u_suballocator_destroy(rctx->allocator_fetch_shader);
 184         }
 185
 186         r600_release_command_buffer(&rctx->start_cs_cmd);
 187
 188         FREE(rctx->start_compute_cs_cmd.buf);
 189
 190         r600_common_context_cleanup(&rctx->b);
 191         FREE(rctx);
 192 }
 193
 194 static struct pipe_context *r600_create_context(struct pipe_screen *screen, void *priv)
 195 {
 196         struct r600_context *rctx = CALLOC_STRUCT(r600_context);
 197         struct r600_screen* rscreen = (struct r600_screen *)screen;
 198
 199         if (rctx == NULL)
 200                 return NULL;
 201
 202         rctx->b.b.screen = screen;
 203         rctx->b.b.priv = priv;
 204         rctx->b.b.destroy = r600_destroy_context;
 205         rctx->b.b.flush = r600_flush_from_st;
 206
 207         if (!r600_common_context_init(&rctx->b, &rscreen->b))
 208                 goto fail;
 209
 210         rctx->screen = rscreen;
 211         rctx->keep_tiling_flags = rscreen->b.info.drm_minor >= 12;
 212
 213         r600_init_blit_functions(rctx);
 214
 215         if (rscreen->b.info.has_uvd) {
 216                 rctx->b.b.create_video_codec = r600_uvd_create_decoder;
 217                 rctx->b.b.create_video_buffer = r600_video_buffer_create;
 218         } else {
 219                 rctx->b.b.create_video_codec = vl_create_decoder;
 220                 rctx->b.b.create_video_buffer = vl_video_buffer_create;
 221         }
 222
 223         r600_init_common_state_functions(rctx);
 224
 225         switch (rctx->b.chip_class) {
 226         case R600:
 227         case R700:
 228                 r600_init_state_functions(rctx);
 229                 r600_init_atom_start_cs(rctx);
 230                 rctx->custom_dsa_flush = r600_create_db_flush_dsa(rctx);
 231                 rctx->custom_blend_resolve = rctx->b.chip_class == R700 ? r700_create_resolve_blend(rctx)
 232                                                                       : r600_create_resolve_blend(rctx);
 233                 rctx->custom_blend_decompress = r600_create_decompress_blend(rctx);
 234                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_RV610 ||
 235                                            rctx->b.family == CHIP_RV620 ||
 236                                            rctx->b.family == CHIP_RS780 ||
 237                                            rctx->b.family == CHIP_RS880 ||
 238                                            rctx->b.family == CHIP_RV710);
 239                 break;
 240         case EVERGREEN:
 241         case CAYMAN:
 242                 evergreen_init_state_functions(rctx);
 243                 evergreen_init_atom_start_cs(rctx);
 244                 evergreen_init_atom_start_compute_cs(rctx);
 245                 rctx->custom_dsa_flush = evergreen_create_db_flush_dsa(rctx);
 246                 rctx->custom_blend_resolve = evergreen_create_resolve_blend(rctx);
 247                 rctx->custom_blend_decompress = evergreen_create_decompress_blend(rctx);
 248                 rctx->custom_blend_fastclear = evergreen_create_fastclear_blend(rctx);
 249                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_CEDAR ||
 250                                            rctx->b.family == CHIP_PALM ||
 251                                            rctx->b.family == CHIP_SUMO ||
 252                                            rctx->b.family == CHIP_SUMO2 ||
 253                                            rctx->b.family == CHIP_CAICOS ||
 254                                            rctx->b.family == CHIP_CAYMAN ||
 255                                            rctx->b.family == CHIP_ARUBA);
 256                 break;
 257         default:
 258                 R600_ERR("Unsupported chip class %d.\n", rctx->b.chip_class);
 259                 goto fail;
 260         }
 261
 262         if (rscreen->b.trace_bo) {
 263                 rctx->b.rings.gfx.cs = rctx->b.ws->cs_create(rctx->b.ws, RING_GFX, rscreen->b.trace_bo->cs_buf);
 264         } else {
 265                 rctx->b.rings.gfx.cs = rctx->b.ws->cs_create(rctx->b.ws, RING_GFX, NULL);
 266         }
 267         rctx->b.rings.gfx.flush = r600_flush_gfx_ring;
 268         rctx->b.ws->cs_set_flush_callback(rctx->b.rings.gfx.cs, r600_flush_from_winsys, rctx);
 269         rctx->b.rings.gfx.flushing = false;
 270
 271         rctx->b.rings.dma.cs = NULL;
 272         if (rscreen->b.info.r600_has_dma && !(rscreen->b.debug_flags & DBG_NO_ASYNC_DMA)) {
 273                 rctx->b.rings.dma.cs = rctx->b.ws->cs_create(rctx->b.ws, RING_DMA, NULL);
 274                 rctx->b.rings.dma.flush = r600_flush_dma_ring;
 275                 rctx->b.ws->cs_set_flush_callback(rctx->b.rings.dma.cs, r600_flush_dma_from_winsys, rctx);
 276                 rctx->b.rings.dma.flushing = false;
 277         }
 278
 279         rctx->allocator_fetch_shader = u_suballocator_create(&rctx->b.b, 64 * 1024, 256,
 280                                                              0, PIPE_USAGE_STATIC, FALSE);
 281         if (!rctx->allocator_fetch_shader)
 282                 goto fail;
 283
 284         rctx->isa = calloc(1, sizeof(struct r600_isa));
 285         if (!rctx->isa || r600_isa_init(rctx, rctx->isa))
 286                 goto fail;
 287
 288         rctx->blitter = util_blitter_create(&rctx->b.b);
 289         if (rctx->blitter == NULL)
 290                 goto fail;
 291         util_blitter_set_texture_multisample(rctx->blitter, rscreen->has_msaa);
 292         rctx->blitter->draw_rectangle = r600_draw_rectangle;
 293
 294         r600_begin_new_cs(rctx);
 295         r600_query_init_backend_mask(&rctx->b); /* this emits commands and must be last */
 296
 297         rctx->dummy_pixel_shader =
 298                 util_make_fragment_cloneinput_shader(&rctx->b.b, 0,
 299                                                      TGSI_SEMANTIC_GENERIC,
 300                                                      TGSI_INTERPOLATE_CONSTANT);
 301         rctx->b.b.bind_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
 302
 303         return &rctx->b.b;
 304
 305 fail:
 306         r600_destroy_context(&rctx->b.b);
 307         return NULL;
 308 }
 309
 310 /*
 311  * pipe_screen
 312  */
 313
 314 static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 315 {
 316         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 317         enum radeon_family family = rscreen->b.family;
 318
 319         switch (param) {
 320         /* Supported features (boolean caps). */
 321         case PIPE_CAP_NPOT_TEXTURES:
 322         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 323         case PIPE_CAP_TWO_SIDED_STENCIL:
 324         case PIPE_CAP_ANISOTROPIC_FILTER:
 325         case PIPE_CAP_POINT_SPRITE:
 326         case PIPE_CAP_OCCLUSION_QUERY:
 327         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 328         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 329         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 330         case PIPE_CAP_TEXTURE_SWIZZLE:
 331         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 332         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 333         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 334         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 335         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 336         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 337         case PIPE_CAP_SM3:
 338         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 339         case PIPE_CAP_PRIMITIVE_RESTART:
 340         case PIPE_CAP_CONDITIONAL_RENDER:
 341         case PIPE_CAP_TEXTURE_BARRIER:
 342         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 343         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 344         case PIPE_CAP_TGSI_INSTANCEID:
 345         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 346         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 347         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 348         case PIPE_CAP_USER_INDEX_BUFFERS:
 349         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 350         case PIPE_CAP_COMPUTE:
 351         case PIPE_CAP_START_INSTANCE:
 352         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 353         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 354         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 355         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 356         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 357                 return 1;
 358
 359         case PIPE_CAP_TGSI_TEXCOORD:
 360                 return 0;
 361
 362         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 363                 return MIN2(rscreen->b.info.vram_size, 0xFFFFFFFF);
 364
 365         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 366                 return R600_MAP_BUFFER_ALIGNMENT;
 367
 368         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 369                 return 256;
 370
 371         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 372                 return 1;
 373
 374         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 375                 return 140;
 376
 377         /* Supported except the original R600. */
 378         case PIPE_CAP_INDEP_BLEND_ENABLE:
 379         case PIPE_CAP_INDEP_BLEND_FUNC:
 380                 /* R600 doesn't support per-MRT blends */
 381                 return family == CHIP_R600 ? 0 : 1;
 382
 383         /* Supported on Evergreen. */
 384         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 385         case PIPE_CAP_CUBE_MAP_ARRAY:
 386         case PIPE_CAP_TGSI_VS_LAYER:
 387                 return family >= CHIP_CEDAR ? 1 : 0;
 388
 389         /* Unsupported features. */
 390         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 391         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 392         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 393         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 394         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 395         case PIPE_CAP_USER_VERTEX_BUFFERS:
 396                 return 0;
 397
 398         /* Stream output. */
 399         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 400                 return rscreen->b.has_streamout ? 4 : 0;
 401         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 402                 return rscreen->b.has_streamout ? 1 : 0;
 403         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 404         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 405                 return 32*4;
 406
 407         /* Texturing. */
 408         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 409         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 410         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 411                 if (family >= CHIP_CEDAR)
 412                         return 15;
 413                 else
 414                         return 14;
 415         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 416                 return rscreen->b.info.drm_minor >= 9 ?
 417                         (family >= CHIP_CEDAR ? 16384 : 8192) : 0;
 418
 419         /* Render targets. */
 420         case PIPE_CAP_MAX_RENDER_TARGETS:
 421                 /* XXX some r6xx are buggy and can only do 4 */
 422                 return 8;
 423
 424         case PIPE_CAP_MAX_VIEWPORTS:
 425                 return 1;
 426
 427         /* Timer queries, present when the clock frequency is non zero. */
 428         case PIPE_CAP_QUERY_TIME_ELAPSED:
 429                 return rscreen->b.info.r600_clock_crystal_freq != 0;
 430         case PIPE_CAP_QUERY_TIMESTAMP:
 431                 return rscreen->b.info.drm_minor >= 20 &&
 432                        rscreen->b.info.r600_clock_crystal_freq != 0;
 433
 434         case PIPE_CAP_MIN_TEXEL_OFFSET:
 435                 return -8;
 436
 437         case PIPE_CAP_MAX_TEXEL_OFFSET:
 438                 return 7;
 439
 440         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 441                 return PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600;
 442         case PIPE_CAP_ENDIANNESS:
 443                 return PIPE_ENDIAN_LITTLE;
 444         }
 445         return 0;
 446 }
 447
 448 static int r600_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 449 {
 450         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 451
 452         switch(shader)
 453         {
 454         case PIPE_SHADER_FRAGMENT:
 455         case PIPE_SHADER_VERTEX:
 456         case PIPE_SHADER_COMPUTE:
 457                 break;
 458         case PIPE_SHADER_GEOMETRY:
 459                 if (rscreen->b.chip_class < EVERGREEN)
 460                         return 0;
 461                 break;
 462         default:
 463                 /* XXX: support tessellation on Evergreen */
 464                 return 0;
 465         }
 466
 467         switch (param) {
 468         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 469         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 470         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 471         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 472                 return 16384;
 473         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 474                 return 32;
 475         case PIPE_SHADER_CAP_MAX_INPUTS:
 476                 return 32;
 477         case PIPE_SHADER_CAP_MAX_TEMPS:
 478                 return 256; /* Max native temporaries. */
 479         case PIPE_SHADER_CAP_MAX_ADDRS:
 480                 /* XXX Isn't this equal to TEMPS? */
 481                 return 1; /* Max native address registers */
 482         case PIPE_SHADER_CAP_MAX_CONSTS:
 483                 return R600_MAX_CONST_BUFFER_SIZE;
 484         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 485                 return R600_MAX_USER_CONST_BUFFERS;
 486         case PIPE_SHADER_CAP_MAX_PREDS:
 487                 return 0; /* nothing uses this */
 488         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 489                 return 1;
 490         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 491                 return 0;
 492         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 493         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 494         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 495         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 496                 return 1;
 497         case PIPE_SHADER_CAP_SUBROUTINES:
 498                 return 0;
 499         case PIPE_SHADER_CAP_INTEGERS:
 500                 return 1;
 501         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 502         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 503                 return 16;
 504         case PIPE_SHADER_CAP_PREFERRED_IR:
 505                 if (shader == PIPE_SHADER_COMPUTE) {
 506                         return PIPE_SHADER_IR_LLVM;
 507                 } else {
 508                         return PIPE_SHADER_IR_TGSI;
 509                 }
 510         }
 511         return 0;
 512 }
 513
 514 static void r600_destroy_screen(struct pipe_screen* pscreen)
 515 {
 516         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 517
 518         if (rscreen == NULL)
 519                 return;
 520
 521         if (!radeon_winsys_unref(rscreen->b.ws))
 522                 return;
 523
 524         if (rscreen->global_pool) {
 525                 compute_memory_pool_delete(rscreen->global_pool);
 526         }
 527
 528         r600_destroy_common_screen(&rscreen->b);
 529 }
 530
 531 static struct pipe_resource *r600_resource_create(struct pipe_screen *screen,
 532                                                   const struct pipe_resource *templ)
 533 {
 534         if (templ->target == PIPE_BUFFER &&
 535             (templ->bind & PIPE_BIND_GLOBAL))
 536                 return r600_compute_global_buffer_create(screen, templ);
 537
 538         return r600_resource_create_common(screen, templ);
 539 }
 540
 541 struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
 542 {
 543         struct r600_screen *rscreen = CALLOC_STRUCT(r600_screen);
 544
 545         if (rscreen == NULL) {
 546                 return NULL;
 547         }
 548
 549         /* Set functions first. */
 550         rscreen->b.b.context_create = r600_create_context;
 551         rscreen->b.b.destroy = r600_destroy_screen;
 552         rscreen->b.b.get_param = r600_get_param;
 553         rscreen->b.b.get_shader_param = r600_get_shader_param;
 554         rscreen->b.b.resource_create = r600_resource_create;
 555
 556         if (!r600_common_screen_init(&rscreen->b, ws)) {
 557                 FREE(rscreen);
 558                 return NULL;
 559         }
 560
 561         if (rscreen->b.info.chip_class >= EVERGREEN) {
 562                 rscreen->b.b.is_format_supported = evergreen_is_format_supported;
 563         } else {
 564                 rscreen->b.b.is_format_supported = r600_is_format_supported;
 565         }
 566
 567         rscreen->b.debug_flags |= debug_get_flags_option("R600_DEBUG", r600_debug_options, 0);
 568         if (debug_get_bool_option("R600_DEBUG_COMPUTE", FALSE))
 569                 rscreen->b.debug_flags |= DBG_COMPUTE;
 570         if (debug_get_bool_option("R600_DUMP_SHADERS", FALSE))
 571                 rscreen->b.debug_flags |= DBG_FS | DBG_VS | DBG_GS | DBG_PS | DBG_CS;
 572         if (!debug_get_bool_option("R600_HYPERZ", TRUE))
 573                 rscreen->b.debug_flags |= DBG_NO_HYPERZ;
 574         if (!debug_get_bool_option("R600_LLVM", TRUE))
 575                 rscreen->b.debug_flags |= DBG_NO_LLVM;
 576
 577         if (rscreen->b.family == CHIP_UNKNOWN) {
 578                 fprintf(stderr, "r600: Unknown chipset 0x%04X\n", rscreen->b.info.pci_id);
 579                 FREE(rscreen);
 580                 return NULL;
 581         }
 582
 583         /* Figure out streamout kernel support. */
 584         switch (rscreen->b.chip_class) {
 585         case R600:
 586                 if (rscreen->b.family < CHIP_RS780) {
 587                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 588                 } else {
 589                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 23;
 590                 }
 591                 break;
 592         case R700:
 593                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 17;
 594                 break;
 595         case EVERGREEN:
 596         case CAYMAN:
 597                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 598                 break;
 599         default:
 600                 rscreen->b.has_streamout = FALSE;
 601                 break;
 602         }
 603
 604         /* MSAA support. */
 605         switch (rscreen->b.chip_class) {
 606         case R600:
 607         case R700:
 608                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 22;
 609                 rscreen->has_compressed_msaa_texturing = false;
 610                 break;
 611         case EVERGREEN:
 612                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 613                 rscreen->has_compressed_msaa_texturing = rscreen->b.info.drm_minor >= 24;
 614                 break;
 615         case CAYMAN:
 616                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 617                 rscreen->has_compressed_msaa_texturing = true;
 618                 break;
 619         default:
 620                 rscreen->has_msaa = FALSE;
 621                 rscreen->has_compressed_msaa_texturing = false;
 622         }
 623
 624         rscreen->b.has_cp_dma = rscreen->b.info.drm_minor >= 27 &&
 625                               !(rscreen->b.debug_flags & DBG_NO_CP_DMA);
 626
 627         rscreen->global_pool = compute_memory_pool_new(rscreen);
 628
 629         /* Create the auxiliary context. This must be done last. */
 630         rscreen->b.aux_context = rscreen->b.b.context_create(&rscreen->b.b, NULL);
 631
 632 #if 0 /* This is for testing whether aux_context and buffer clearing work correctly. */
 633         struct pipe_resource templ = {};
 634
 635         templ.width0 = 4;
 636         templ.height0 = 2048;
 637         templ.depth0 = 1;
 638         templ.array_size = 1;
 639         templ.target = PIPE_TEXTURE_2D;
 640         templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
 641         templ.usage = PIPE_USAGE_STATIC;
 642
 643         struct r600_resource *res = r600_resource(rscreen->screen.resource_create(&rscreen->screen, &templ));
 644         unsigned char *map = ws->buffer_map(res->cs_buf, NULL, PIPE_TRANSFER_WRITE);
 645
 646         memset(map, 0, 256);
 647
 648         r600_screen_clear_buffer(rscreen, &res->b.b, 4, 4, 0xCC);
 649         r600_screen_clear_buffer(rscreen, &res->b.b, 8, 4, 0xDD);
 650         r600_screen_clear_buffer(rscreen, &res->b.b, 12, 4, 0xEE);
 651         r600_screen_clear_buffer(rscreen, &res->b.b, 20, 4, 0xFF);
 652         r600_screen_clear_buffer(rscreen, &res->b.b, 32, 20, 0x87);
 653
 654         ws->buffer_wait(res->buf, RADEON_USAGE_WRITE);
 655
 656         int i;
 657         for (i = 0; i < 256; i++) {
 658                 printf("%02X", map[i]);
 659                 if (i % 16 == 15)
 660                         printf("\n");
 661         }
 662 #endif
 663
 664         return &rscreen->b.b;
 665 }