src/gallium/drivers/r300/r300_screen.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23
  24 #include "util/u_format.h"
  25 #include "util/u_format_s3tc.h"
  26 #include "util/u_memory.h"
  27 #include "os/os_time.h"
  28 #include "vl/vl_decoder.h"
  29 #include "vl/vl_video_buffer.h"
  30
  31 #include "r300_context.h"
  32 #include "r300_texture.h"
  33 #include "r300_screen_buffer.h"
  34 #include "r300_state_inlines.h"
  35 #include "r300_public.h"
  36
  37 #include "draw/draw_context.h"
  38
  39 /* Return the identifier behind whom the brave coders responsible for this
  40  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  41  *
  42  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  43  *
  44  * (Or egotistical. Yet.) */
  45 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  46 {
  47     return "X.Org R300 Project";
  48 }
  49
  50 static const char* r300_get_device_vendor(struct pipe_screen* pscreen)
  51 {
  52     return "ATI";
  53 }
  54
  55 static const char* chip_families[] = {
  56     "unknown",
  57     "ATI R300",
  58     "ATI R350",
  59     "ATI RV350",
  60     "ATI RV370",
  61     "ATI RV380",
  62     "ATI RS400",
  63     "ATI RC410",
  64     "ATI RS480",
  65     "ATI R420",
  66     "ATI R423",
  67     "ATI R430",
  68     "ATI R480",
  69     "ATI R481",
  70     "ATI RV410",
  71     "ATI RS600",
  72     "ATI RS690",
  73     "ATI RS740",
  74     "ATI RV515",
  75     "ATI R520",
  76     "ATI RV530",
  77     "ATI R580",
  78     "ATI RV560",
  79     "ATI RV570"
  80 };
  81
  82 static const char* r300_get_name(struct pipe_screen* pscreen)
  83 {
  84     struct r300_screen* r300screen = r300_screen(pscreen);
  85
  86     return chip_families[r300screen->caps.family];
  87 }
  88
  89 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  90 {
  91     struct r300_screen* r300screen = r300_screen(pscreen);
  92     boolean is_r500 = r300screen->caps.is_r500;
  93
  94     switch (param) {
  95         /* Supported features (boolean caps). */
  96         case PIPE_CAP_NPOT_TEXTURES:
  97         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  98         case PIPE_CAP_TWO_SIDED_STENCIL:
  99         case PIPE_CAP_ANISOTROPIC_FILTER:
 100         case PIPE_CAP_POINT_SPRITE:
 101         case PIPE_CAP_OCCLUSION_QUERY:
 102         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 103         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 104         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 105         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 106         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 107         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 108         case PIPE_CAP_CONDITIONAL_RENDER:
 109         case PIPE_CAP_TEXTURE_BARRIER:
 110         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 111         case PIPE_CAP_USER_INDEX_BUFFERS:
 112         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 113         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 114         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 115         case PIPE_CAP_CLIP_HALFZ:
 116             return 1;
 117
 118         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 119             return R300_BUFFER_ALIGNMENT;
 120
 121         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 122             return 16;
 123
 124         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 125             return 120;
 126
 127         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 128         case PIPE_CAP_TEXTURE_SWIZZLE:
 129             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 130
 131         /* We don't support color clamping on r500, so that we can use color
 132          * intepolators for generic varyings. */
 133         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 134             return !is_r500;
 135
 136         /* Supported on r500 only. */
 137         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 138         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 139         case PIPE_CAP_SM3:
 140             return is_r500 ? 1 : 0;
 141
 142         /* Unsupported features. */
 143         case PIPE_CAP_QUERY_TIME_ELAPSED:
 144         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 145         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 146         case PIPE_CAP_INDEP_BLEND_ENABLE:
 147         case PIPE_CAP_INDEP_BLEND_FUNC:
 148         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 149         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 150         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 151         case PIPE_CAP_TGSI_INSTANCEID:
 152         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 153         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 154         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 155         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 156         case PIPE_CAP_MIN_TEXEL_OFFSET:
 157         case PIPE_CAP_MAX_TEXEL_OFFSET:
 158         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 159         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 160         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 161         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 162         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 163         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 164         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 165         case PIPE_CAP_MAX_VERTEX_STREAMS:
 166         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 167         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 168         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 169         case PIPE_CAP_COMPUTE:
 170         case PIPE_CAP_START_INSTANCE:
 171         case PIPE_CAP_QUERY_TIMESTAMP:
 172         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 173         case PIPE_CAP_CUBE_MAP_ARRAY:
 174         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 175         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 176         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 177         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 178         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 179         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 180         case PIPE_CAP_TEXTURE_GATHER_SM5:
 181         case PIPE_CAP_TEXTURE_QUERY_LOD:
 182         case PIPE_CAP_FAKE_SW_MSAA:
 183         case PIPE_CAP_SAMPLE_SHADING:
 184         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 185         case PIPE_CAP_DRAW_INDIRECT:
 186         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 187         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 188         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 189         case PIPE_CAP_VERTEXID_NOBASE:
 190         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 191         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 192         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 193         case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 194         case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 195         case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 196         case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 197         case PIPE_CAP_DEPTH_BOUNDS_TEST:
 198         case PIPE_CAP_TGSI_TXQS:
 199         case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 200         case PIPE_CAP_SHAREABLE_SHADERS:
 201         case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 202         case PIPE_CAP_CLEAR_TEXTURE:
 203             return 0;
 204
 205         /* SWTCL-only features. */
 206         case PIPE_CAP_PRIMITIVE_RESTART:
 207         case PIPE_CAP_USER_VERTEX_BUFFERS:
 208         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 209             return !r300screen->caps.has_tcl;
 210
 211         /* HWTCL-only features / limitations. */
 212         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 213         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 214         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 215             return r300screen->caps.has_tcl;
 216         case PIPE_CAP_TGSI_TEXCOORD:
 217             return 0;
 218
 219         /* Texturing. */
 220         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 221         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 222         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 223             /* 13 == 4096, 12 == 2048 */
 224             return is_r500 ? 13 : 12;
 225
 226         /* Render targets. */
 227         case PIPE_CAP_MAX_RENDER_TARGETS:
 228             return 4;
 229         case PIPE_CAP_ENDIANNESS:
 230             return PIPE_ENDIAN_LITTLE;
 231
 232         case PIPE_CAP_MAX_VIEWPORTS:
 233             return 1;
 234
 235         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 236             return 2048;
 237
 238         case PIPE_CAP_VENDOR_ID:
 239                 return 0x1002;
 240         case PIPE_CAP_DEVICE_ID:
 241                 return r300screen->info.pci_id;
 242         case PIPE_CAP_ACCELERATED:
 243                 return 1;
 244         case PIPE_CAP_VIDEO_MEMORY:
 245                 return r300screen->info.vram_size >> 20;
 246         case PIPE_CAP_UMA:
 247                 return 0;
 248     }
 249     return 0;
 250 }
 251
 252 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 253 {
 254    struct r300_screen* r300screen = r300_screen(pscreen);
 255    boolean is_r400 = r300screen->caps.is_r400;
 256    boolean is_r500 = r300screen->caps.is_r500;
 257
 258    switch (shader) {
 259     case PIPE_SHADER_FRAGMENT:
 260         switch (param)
 261         {
 262         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 263             return is_r500 || is_r400 ? 512 : 96;
 264         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 265             return is_r500 || is_r400 ? 512 : 64;
 266         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 267             return is_r500 || is_r400 ? 512 : 32;
 268         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 269             return is_r500 ? 511 : 4;
 270         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 271             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 272             /* Fragment shader limits. */
 273         case PIPE_SHADER_CAP_MAX_INPUTS:
 274             /* 2 colors + 8 texcoords are always supported
 275              * (minus fog and wpos).
 276              *
 277              * R500 has the ability to turn 3rd and 4th color into
 278              * additional texcoords but there is no two-sided color
 279              * selection then. However the facing bit can be used instead. */
 280             return 10;
 281         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 282             return 4;
 283         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 284             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 285         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 286         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 287             return 1;
 288         case PIPE_SHADER_CAP_MAX_TEMPS:
 289             return is_r500 ? 128 : is_r400 ? 64 : 32;
 290         case PIPE_SHADER_CAP_MAX_PREDS:
 291             return 0; /* unused */
 292         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 293         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 294            return r300screen->caps.num_tex_units;
 295         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 296         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 297         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 298         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 299         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 300         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 301         case PIPE_SHADER_CAP_SUBROUTINES:
 302         case PIPE_SHADER_CAP_INTEGERS:
 303         case PIPE_SHADER_CAP_DOUBLES:
 304         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 305         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 306         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 307             return 0;
 308         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 309             return 32;
 310         case PIPE_SHADER_CAP_PREFERRED_IR:
 311             return PIPE_SHADER_IR_TGSI;
 312         }
 313         break;
 314     case PIPE_SHADER_VERTEX:
 315         switch (param)
 316         {
 317         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 318         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 319         case PIPE_SHADER_CAP_SUBROUTINES:
 320             return 0;
 321         default:;
 322         }
 323
 324         if (!r300screen->caps.has_tcl) {
 325             return draw_get_shader_param(shader, param);
 326         }
 327
 328         switch (param)
 329         {
 330         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 331         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 332             return is_r500 ? 1024 : 256;
 333         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 334             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 335         case PIPE_SHADER_CAP_MAX_INPUTS:
 336             return 16;
 337         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 338             return 10;
 339         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 340             return 256 * sizeof(float[4]);
 341         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 342             return 1;
 343         case PIPE_SHADER_CAP_MAX_TEMPS:
 344             return 32;
 345         case PIPE_SHADER_CAP_MAX_PREDS:
 346             return 0; /* unused */
 347         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 348         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 349             return 1;
 350         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 351         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 352         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 353         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 354         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 355         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 356         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 357         case PIPE_SHADER_CAP_SUBROUTINES:
 358         case PIPE_SHADER_CAP_INTEGERS:
 359         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 360         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 361         case PIPE_SHADER_CAP_DOUBLES:
 362         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 363         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 364         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 365             return 0;
 366         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 367             return 32;
 368         case PIPE_SHADER_CAP_PREFERRED_IR:
 369             return PIPE_SHADER_IR_TGSI;
 370         }
 371         break;
 372     }
 373     return 0;
 374 }
 375
 376 static float r300_get_paramf(struct pipe_screen* pscreen,
 377                              enum pipe_capf param)
 378 {
 379     struct r300_screen* r300screen = r300_screen(pscreen);
 380
 381     switch (param) {
 382         case PIPE_CAPF_MAX_LINE_WIDTH:
 383         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 384         case PIPE_CAPF_MAX_POINT_WIDTH:
 385         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 386             /* The maximum dimensions of the colorbuffer are our practical
 387              * rendering limits. 2048 pixels should be enough for anybody. */
 388             if (r300screen->caps.is_r500) {
 389                 return 4096.0f;
 390             } else if (r300screen->caps.is_r400) {
 391                 return 4021.0f;
 392             } else {
 393                 return 2560.0f;
 394             }
 395         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 396             return 16.0f;
 397         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 398             return 16.0f;
 399         case PIPE_CAPF_GUARD_BAND_LEFT:
 400         case PIPE_CAPF_GUARD_BAND_TOP:
 401         case PIPE_CAPF_GUARD_BAND_RIGHT:
 402         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 403             return 0.0f;
 404         default:
 405             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 406                          param);
 407             return 0.0f;
 408     }
 409 }
 410
 411 static int r300_get_video_param(struct pipe_screen *screen,
 412                                 enum pipe_video_profile profile,
 413                                 enum pipe_video_entrypoint entrypoint,
 414                                 enum pipe_video_cap param)
 415 {
 416    switch (param) {
 417       case PIPE_VIDEO_CAP_SUPPORTED:
 418          return vl_profile_supported(screen, profile, entrypoint);
 419       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 420          return 0;
 421       case PIPE_VIDEO_CAP_MAX_WIDTH:
 422       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 423          return vl_video_buffer_max_size(screen);
 424       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 425          return PIPE_FORMAT_NV12;
 426       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 427          return false;
 428       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 429          return false;
 430       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 431          return true;
 432       case PIPE_VIDEO_CAP_MAX_LEVEL:
 433          return vl_level_supported(screen, profile);
 434       default:
 435          return 0;
 436    }
 437 }
 438
 439 /**
 440  * Whether the format matches:
 441  *   PIPE_FORMAT_?10?10?10?2_UNORM
 442  */
 443 static inline boolean
 444 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 445 {
 446    static const unsigned size[4] = {10, 10, 10, 2};
 447    unsigned chan;
 448
 449    if (desc->block.width != 1 ||
 450        desc->block.height != 1 ||
 451        desc->block.bits != 32)
 452       return FALSE;
 453
 454    for (chan = 0; chan < 4; ++chan) {
 455       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 456          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 457          return FALSE;
 458       if (desc->channel[chan].size != size[chan])
 459          return FALSE;
 460    }
 461
 462    return TRUE;
 463 }
 464
 465 static bool r300_is_blending_supported(struct r300_screen *rscreen,
 466                                        enum pipe_format format)
 467 {
 468     int c;
 469     const struct util_format_description *desc =
 470         util_format_description(format);
 471
 472     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 473         return false;
 474
 475     c = util_format_get_first_non_void_channel(format);
 476
 477     /* RGBA16F */
 478     if (rscreen->caps.is_r500 &&
 479         desc->nr_channels == 4 &&
 480         desc->channel[c].size == 16 &&
 481         desc->channel[c].type == UTIL_FORMAT_TYPE_FLOAT)
 482         return true;
 483
 484     if (desc->channel[c].normalized &&
 485         desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED &&
 486         desc->channel[c].size >= 4 &&
 487         desc->channel[c].size <= 10) {
 488         /* RGB10_A2, RGBA8, RGB5_A1, RGBA4, RGB565 */
 489         if (desc->nr_channels >= 3)
 490             return true;
 491
 492         if (format == PIPE_FORMAT_R8G8_UNORM)
 493             return true;
 494
 495         /* R8, I8, L8, A8 */
 496         if (desc->nr_channels == 1)
 497             return true;
 498     }
 499
 500     return false;
 501 }
 502
 503 static boolean r300_is_format_supported(struct pipe_screen* screen,
 504                                         enum pipe_format format,
 505                                         enum pipe_texture_target target,
 506                                         unsigned sample_count,
 507                                         unsigned usage)
 508 {
 509     uint32_t retval = 0;
 510     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 511     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 512     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 513     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 514                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 515                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 516                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 517                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 518     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 519                        format == PIPE_FORMAT_RGTC1_SNORM ||
 520                        format == PIPE_FORMAT_LATC1_UNORM ||
 521                        format == PIPE_FORMAT_LATC1_SNORM;
 522     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 523                        format == PIPE_FORMAT_RGTC2_SNORM ||
 524                        format == PIPE_FORMAT_LATC2_UNORM ||
 525                        format == PIPE_FORMAT_LATC2_SNORM;
 526     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 527                             format == PIPE_FORMAT_R16G16_FLOAT ||
 528                             format == PIPE_FORMAT_A16_FLOAT ||
 529                             format == PIPE_FORMAT_L16_FLOAT ||
 530                             format == PIPE_FORMAT_L16A16_FLOAT ||
 531                             format == PIPE_FORMAT_R16A16_FLOAT ||
 532                             format == PIPE_FORMAT_I16_FLOAT;
 533     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 534                             format == PIPE_FORMAT_R16G16_FLOAT ||
 535                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 536                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 537                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 538     const struct util_format_description *desc;
 539
 540     if (!util_format_is_supported(format, usage))
 541        return FALSE;
 542
 543     /* Check multisampling support. */
 544     switch (sample_count) {
 545         case 0:
 546         case 1:
 547             break;
 548         case 2:
 549         case 4:
 550         case 6:
 551             /* We need DRM 2.8.0. */
 552             if (!drm_2_8_0) {
 553                 return FALSE;
 554             }
 555             /* No texturing and scanout. */
 556             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 557                          PIPE_BIND_DISPLAY_TARGET |
 558                          PIPE_BIND_SCANOUT)) {
 559                 return FALSE;
 560             }
 561
 562             desc = util_format_description(format);
 563
 564             if (is_r500) {
 565                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 566                 if (!util_format_is_depth_or_stencil(format) &&
 567                     !util_format_is_rgba8_variant(desc) &&
 568                     !util_format_is_rgba1010102_variant(desc) &&
 569                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 570                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 571                     return FALSE;
 572                 }
 573             } else {
 574                 /* Only allow depth/stencil, RGBA8. */
 575                 if (!util_format_is_depth_or_stencil(format) &&
 576                     !util_format_is_rgba8_variant(desc)) {
 577                     return FALSE;
 578                 }
 579             }
 580             break;
 581         default:
 582             return FALSE;
 583     }
 584
 585     /* Check sampler format support. */
 586     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 587         /* these two are broken for an unknown reason */
 588         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 589         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 590         /* ATI1N is r5xx-only. */
 591         (is_r500 || !is_ati1n) &&
 592         /* ATI2N is supported on r4xx-r5xx. */
 593         (is_r400 || is_r500 || !is_ati2n) &&
 594         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 595         (drm_2_8_0 || !is_x16f_xy16f) &&
 596         r300_is_sampler_format_supported(format)) {
 597         retval |= PIPE_BIND_SAMPLER_VIEW;
 598     }
 599
 600     /* Check colorbuffer format support. */
 601     if ((usage & (PIPE_BIND_RENDER_TARGET |
 602                   PIPE_BIND_DISPLAY_TARGET |
 603                   PIPE_BIND_SCANOUT |
 604                   PIPE_BIND_SHARED |
 605                   PIPE_BIND_BLENDABLE)) &&
 606         /* 2101010 cannot be rendered to on non-r5xx. */
 607         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 608         r300_is_colorbuffer_format_supported(format)) {
 609         retval |= usage &
 610             (PIPE_BIND_RENDER_TARGET |
 611              PIPE_BIND_DISPLAY_TARGET |
 612              PIPE_BIND_SCANOUT |
 613              PIPE_BIND_SHARED);
 614
 615         if (r300_is_blending_supported(r300_screen(screen), format)) {
 616             retval |= usage & PIPE_BIND_BLENDABLE;
 617         }
 618     }
 619
 620     /* Check depth-stencil format support. */
 621     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 622         r300_is_zs_format_supported(format)) {
 623         retval |= PIPE_BIND_DEPTH_STENCIL;
 624     }
 625
 626     /* Check vertex buffer format support. */
 627     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 628         if (r300_screen(screen)->caps.has_tcl) {
 629             /* Half float is supported on >= R400. */
 630             if ((is_r400 || is_r500 || !is_half_float) &&
 631                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 632                 retval |= PIPE_BIND_VERTEX_BUFFER;
 633             }
 634         } else {
 635             /* SW TCL */
 636             if (!util_format_is_pure_integer(format)) {
 637                 retval |= PIPE_BIND_VERTEX_BUFFER;
 638             }
 639         }
 640     }
 641
 642     /* Transfers are always supported. */
 643     if (usage & PIPE_BIND_TRANSFER_READ)
 644         retval |= PIPE_BIND_TRANSFER_READ;
 645     if (usage & PIPE_BIND_TRANSFER_WRITE)
 646         retval |= PIPE_BIND_TRANSFER_WRITE;
 647
 648     return retval == usage;
 649 }
 650
 651 static void r300_destroy_screen(struct pipe_screen* pscreen)
 652 {
 653     struct r300_screen* r300screen = r300_screen(pscreen);
 654     struct radeon_winsys *rws = radeon_winsys(pscreen);
 655
 656     if (rws && !rws->unref(rws))
 657       return;
 658
 659     pipe_mutex_destroy(r300screen->cmask_mutex);
 660
 661     if (rws)
 662       rws->destroy(rws);
 663
 664     FREE(r300screen);
 665 }
 666
 667 static void r300_fence_reference(struct pipe_screen *screen,
 668                                  struct pipe_fence_handle **ptr,
 669                                  struct pipe_fence_handle *fence)
 670 {
 671     struct radeon_winsys *rws = r300_screen(screen)->rws;
 672
 673     rws->fence_reference(ptr, fence);
 674 }
 675
 676 static boolean r300_fence_finish(struct pipe_screen *screen,
 677                                  struct pipe_fence_handle *fence,
 678                                  uint64_t timeout)
 679 {
 680     struct radeon_winsys *rws = r300_screen(screen)->rws;
 681
 682     return rws->fence_wait(rws, fence, timeout);
 683 }
 684
 685 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 686 {
 687     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 688
 689     if (!r300screen) {
 690         FREE(r300screen);
 691         return NULL;
 692     }
 693
 694     rws->query_info(rws, &r300screen->info);
 695
 696     r300_init_debug(r300screen);
 697     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 698
 699     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 700         r300screen->caps.zmask_ram = 0;
 701     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 702         r300screen->caps.hiz_ram = 0;
 703
 704     if (r300screen->info.drm_minor < 8)
 705         r300screen->caps.has_us_format = FALSE;
 706
 707     r300screen->rws = rws;
 708     r300screen->screen.destroy = r300_destroy_screen;
 709     r300screen->screen.get_name = r300_get_name;
 710     r300screen->screen.get_vendor = r300_get_vendor;
 711     r300screen->screen.get_device_vendor = r300_get_device_vendor;
 712     r300screen->screen.get_param = r300_get_param;
 713     r300screen->screen.get_shader_param = r300_get_shader_param;
 714     r300screen->screen.get_paramf = r300_get_paramf;
 715     r300screen->screen.get_video_param = r300_get_video_param;
 716     r300screen->screen.is_format_supported = r300_is_format_supported;
 717     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 718     r300screen->screen.context_create = r300_create_context;
 719     r300screen->screen.fence_reference = r300_fence_reference;
 720     r300screen->screen.fence_finish = r300_fence_finish;
 721
 722     r300_init_screen_resource_functions(r300screen);
 723
 724     util_format_s3tc_init();
 725     pipe_mutex_init(r300screen->cmask_mutex);
 726
 727     return &r300screen->screen;
 728 }