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* chip_families[] = {
  51     "unknown",
  52     "ATI R300",
  53     "ATI R350",
  54     "ATI RV350",
  55     "ATI RV370",
  56     "ATI RV380",
  57     "ATI RS400",
  58     "ATI RC410",
  59     "ATI RS480",
  60     "ATI R420",
  61     "ATI R423",
  62     "ATI R430",
  63     "ATI R480",
  64     "ATI R481",
  65     "ATI RV410",
  66     "ATI RS600",
  67     "ATI RS690",
  68     "ATI RS740",
  69     "ATI RV515",
  70     "ATI R520",
  71     "ATI RV530",
  72     "ATI R580",
  73     "ATI RV560",
  74     "ATI RV570"
  75 };
  76
  77 static const char* r300_get_name(struct pipe_screen* pscreen)
  78 {
  79     struct r300_screen* r300screen = r300_screen(pscreen);
  80
  81     return chip_families[r300screen->caps.family];
  82 }
  83
  84 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  85 {
  86     struct r300_screen* r300screen = r300_screen(pscreen);
  87     boolean is_r500 = r300screen->caps.is_r500;
  88
  89     switch (param) {
  90         /* Supported features (boolean caps). */
  91         case PIPE_CAP_NPOT_TEXTURES:
  92         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  93         case PIPE_CAP_TWO_SIDED_STENCIL:
  94         case PIPE_CAP_ANISOTROPIC_FILTER:
  95         case PIPE_CAP_POINT_SPRITE:
  96         case PIPE_CAP_OCCLUSION_QUERY:
  97         case PIPE_CAP_TEXTURE_SHADOW_MAP:
  98         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  99         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 100         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 101         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 102         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 103         case PIPE_CAP_CONDITIONAL_RENDER:
 104         case PIPE_CAP_TEXTURE_BARRIER:
 105         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 106         case PIPE_CAP_USER_INDEX_BUFFERS:
 107         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 108         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 109         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 110         case PIPE_CAP_CLIP_HALFZ:
 111             return 1;
 112
 113         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 114             return R300_BUFFER_ALIGNMENT;
 115
 116         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 117             return 16;
 118
 119         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 120             return 120;
 121
 122         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 123         case PIPE_CAP_TEXTURE_SWIZZLE:
 124             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 125
 126         /* We don't support color clamping on r500, so that we can use color
 127          * intepolators for generic varyings. */
 128         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 129             return !is_r500;
 130
 131         /* Supported on r500 only. */
 132         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 133         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 134         case PIPE_CAP_SM3:
 135             return is_r500 ? 1 : 0;
 136
 137         /* Unsupported features. */
 138         case PIPE_CAP_QUERY_TIME_ELAPSED:
 139         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 140         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 141         case PIPE_CAP_INDEP_BLEND_ENABLE:
 142         case PIPE_CAP_INDEP_BLEND_FUNC:
 143         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 144         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 145         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 146         case PIPE_CAP_TGSI_INSTANCEID:
 147         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 148         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 149         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 150         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 151         case PIPE_CAP_MIN_TEXEL_OFFSET:
 152         case PIPE_CAP_MAX_TEXEL_OFFSET:
 153         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 154         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 155         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 156         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 157         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 158         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 159         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 160         case PIPE_CAP_MAX_VERTEX_STREAMS:
 161         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 162         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 163         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 164         case PIPE_CAP_COMPUTE:
 165         case PIPE_CAP_START_INSTANCE:
 166         case PIPE_CAP_QUERY_TIMESTAMP:
 167         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 168         case PIPE_CAP_CUBE_MAP_ARRAY:
 169         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 170         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 171         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 172         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 173         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 174         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 175         case PIPE_CAP_TEXTURE_GATHER_SM5:
 176         case PIPE_CAP_TEXTURE_QUERY_LOD:
 177         case PIPE_CAP_FAKE_SW_MSAA:
 178         case PIPE_CAP_SAMPLE_SHADING:
 179         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 180         case PIPE_CAP_DRAW_INDIRECT:
 181         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 182         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 183         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 184         case PIPE_CAP_VERTEXID_NOBASE:
 185         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 186         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 187         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 188             return 0;
 189
 190         /* SWTCL-only features. */
 191         case PIPE_CAP_PRIMITIVE_RESTART:
 192         case PIPE_CAP_USER_VERTEX_BUFFERS:
 193         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 194             return !r300screen->caps.has_tcl;
 195
 196         /* HWTCL-only features / limitations. */
 197         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 198         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 199         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 200             return r300screen->caps.has_tcl;
 201         case PIPE_CAP_TGSI_TEXCOORD:
 202             return 0;
 203
 204         /* Texturing. */
 205         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 206         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 207         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 208             /* 13 == 4096, 12 == 2048 */
 209             return is_r500 ? 13 : 12;
 210
 211         /* Render targets. */
 212         case PIPE_CAP_MAX_RENDER_TARGETS:
 213             return 4;
 214         case PIPE_CAP_ENDIANNESS:
 215             return PIPE_ENDIAN_LITTLE;
 216
 217         case PIPE_CAP_MAX_VIEWPORTS:
 218             return 1;
 219
 220         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 221             return 2048;
 222
 223         case PIPE_CAP_VENDOR_ID:
 224                 return 0x1002;
 225         case PIPE_CAP_DEVICE_ID:
 226                 return r300screen->info.pci_id;
 227         case PIPE_CAP_ACCELERATED:
 228                 return 1;
 229         case PIPE_CAP_VIDEO_MEMORY:
 230                 return r300screen->info.vram_size >> 20;
 231         case PIPE_CAP_UMA:
 232                 return 0;
 233     }
 234     return 0;
 235 }
 236
 237 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 238 {
 239    struct r300_screen* r300screen = r300_screen(pscreen);
 240    boolean is_r400 = r300screen->caps.is_r400;
 241    boolean is_r500 = r300screen->caps.is_r500;
 242
 243    switch (shader) {
 244     case PIPE_SHADER_FRAGMENT:
 245         switch (param)
 246         {
 247         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 248             return is_r500 || is_r400 ? 512 : 96;
 249         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 250             return is_r500 || is_r400 ? 512 : 64;
 251         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 252             return is_r500 || is_r400 ? 512 : 32;
 253         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 254             return is_r500 ? 511 : 4;
 255         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 256             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 257             /* Fragment shader limits. */
 258         case PIPE_SHADER_CAP_MAX_INPUTS:
 259             /* 2 colors + 8 texcoords are always supported
 260              * (minus fog and wpos).
 261              *
 262              * R500 has the ability to turn 3rd and 4th color into
 263              * additional texcoords but there is no two-sided color
 264              * selection then. However the facing bit can be used instead. */
 265             return 10;
 266         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 267             return 4;
 268         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 269             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 270         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 271             return 1;
 272         case PIPE_SHADER_CAP_MAX_TEMPS:
 273             return is_r500 ? 128 : is_r400 ? 64 : 32;
 274         case PIPE_SHADER_CAP_MAX_PREDS:
 275             return 0; /* unused */
 276         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 277         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 278            return r300screen->caps.num_tex_units;
 279         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 280         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 281         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 282         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 283         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 284         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 285         case PIPE_SHADER_CAP_SUBROUTINES:
 286         case PIPE_SHADER_CAP_INTEGERS:
 287         case PIPE_SHADER_CAP_DOUBLES:
 288         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 289         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 290         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 291             return 0;
 292         case PIPE_SHADER_CAP_PREFERRED_IR:
 293             return PIPE_SHADER_IR_TGSI;
 294         }
 295         break;
 296     case PIPE_SHADER_VERTEX:
 297         switch (param)
 298         {
 299         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 300         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 301         case PIPE_SHADER_CAP_SUBROUTINES:
 302             return 0;
 303         default:;
 304         }
 305
 306         if (!r300screen->caps.has_tcl) {
 307             return draw_get_shader_param(shader, param);
 308         }
 309
 310         switch (param)
 311         {
 312         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 313         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 314             return is_r500 ? 1024 : 256;
 315         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 316             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 317         case PIPE_SHADER_CAP_MAX_INPUTS:
 318             return 16;
 319         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 320             return 10;
 321         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 322             return 256 * sizeof(float[4]);
 323         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 324             return 1;
 325         case PIPE_SHADER_CAP_MAX_TEMPS:
 326             return 32;
 327         case PIPE_SHADER_CAP_MAX_PREDS:
 328             return 0; /* unused */
 329         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 330             return 1;
 331         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 332         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 333         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 334         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 335         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 336         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 337         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 338         case PIPE_SHADER_CAP_SUBROUTINES:
 339         case PIPE_SHADER_CAP_INTEGERS:
 340         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 341         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 342         case PIPE_SHADER_CAP_DOUBLES:
 343         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 344         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 345         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 346             return 0;
 347         case PIPE_SHADER_CAP_PREFERRED_IR:
 348             return PIPE_SHADER_IR_TGSI;
 349         }
 350         break;
 351     }
 352     return 0;
 353 }
 354
 355 static float r300_get_paramf(struct pipe_screen* pscreen,
 356                              enum pipe_capf param)
 357 {
 358     struct r300_screen* r300screen = r300_screen(pscreen);
 359
 360     switch (param) {
 361         case PIPE_CAPF_MAX_LINE_WIDTH:
 362         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 363         case PIPE_CAPF_MAX_POINT_WIDTH:
 364         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 365             /* The maximum dimensions of the colorbuffer are our practical
 366              * rendering limits. 2048 pixels should be enough for anybody. */
 367             if (r300screen->caps.is_r500) {
 368                 return 4096.0f;
 369             } else if (r300screen->caps.is_r400) {
 370                 return 4021.0f;
 371             } else {
 372                 return 2560.0f;
 373             }
 374         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 375             return 16.0f;
 376         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 377             return 16.0f;
 378         case PIPE_CAPF_GUARD_BAND_LEFT:
 379         case PIPE_CAPF_GUARD_BAND_TOP:
 380         case PIPE_CAPF_GUARD_BAND_RIGHT:
 381         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 382             return 0.0f;
 383         default:
 384             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 385                          param);
 386             return 0.0f;
 387     }
 388 }
 389
 390 static int r300_get_video_param(struct pipe_screen *screen,
 391                                 enum pipe_video_profile profile,
 392                                 enum pipe_video_entrypoint entrypoint,
 393                                 enum pipe_video_cap param)
 394 {
 395    switch (param) {
 396       case PIPE_VIDEO_CAP_SUPPORTED:
 397          return vl_profile_supported(screen, profile, entrypoint);
 398       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 399          return 0;
 400       case PIPE_VIDEO_CAP_MAX_WIDTH:
 401       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 402          return vl_video_buffer_max_size(screen);
 403       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 404          return PIPE_FORMAT_NV12;
 405       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 406          return false;
 407       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 408          return false;
 409       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 410          return true;
 411       case PIPE_VIDEO_CAP_MAX_LEVEL:
 412          return vl_level_supported(screen, profile);
 413       default:
 414          return 0;
 415    }
 416 }
 417
 418 /**
 419  * Whether the format matches:
 420  *   PIPE_FORMAT_?10?10?10?2_UNORM
 421  */
 422 static INLINE boolean
 423 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 424 {
 425    static const unsigned size[4] = {10, 10, 10, 2};
 426    unsigned chan;
 427
 428    if (desc->block.width != 1 ||
 429        desc->block.height != 1 ||
 430        desc->block.bits != 32)
 431       return FALSE;
 432
 433    for (chan = 0; chan < 4; ++chan) {
 434       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 435          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 436          return FALSE;
 437       if (desc->channel[chan].size != size[chan])
 438          return FALSE;
 439    }
 440
 441    return TRUE;
 442 }
 443
 444 static bool r300_is_blending_supported(struct r300_screen *rscreen,
 445                                        enum pipe_format format)
 446 {
 447     int c;
 448     const struct util_format_description *desc =
 449         util_format_description(format);
 450
 451     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 452         return false;
 453
 454     c = util_format_get_first_non_void_channel(format);
 455
 456     /* RGBA16F */
 457     if (rscreen->caps.is_r500 &&
 458         desc->nr_channels == 4 &&
 459         desc->channel[c].size == 16 &&
 460         desc->channel[c].type == UTIL_FORMAT_TYPE_FLOAT)
 461         return true;
 462
 463     if (desc->channel[c].normalized &&
 464         desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED &&
 465         desc->channel[c].size >= 4 &&
 466         desc->channel[c].size <= 10) {
 467         /* RGB10_A2, RGBA8, RGB5_A1, RGBA4, RGB565 */
 468         if (desc->nr_channels >= 3)
 469             return true;
 470
 471         if (format == PIPE_FORMAT_R8G8_UNORM)
 472             return true;
 473
 474         /* R8, I8, L8, A8 */
 475         if (desc->nr_channels == 1)
 476             return true;
 477     }
 478
 479     return false;
 480 }
 481
 482 static boolean r300_is_format_supported(struct pipe_screen* screen,
 483                                         enum pipe_format format,
 484                                         enum pipe_texture_target target,
 485                                         unsigned sample_count,
 486                                         unsigned usage)
 487 {
 488     uint32_t retval = 0;
 489     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 490     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 491     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 492     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 493                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 494                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 495                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 496                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 497     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 498                        format == PIPE_FORMAT_RGTC1_SNORM ||
 499                        format == PIPE_FORMAT_LATC1_UNORM ||
 500                        format == PIPE_FORMAT_LATC1_SNORM;
 501     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 502                        format == PIPE_FORMAT_RGTC2_SNORM ||
 503                        format == PIPE_FORMAT_LATC2_UNORM ||
 504                        format == PIPE_FORMAT_LATC2_SNORM;
 505     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 506                             format == PIPE_FORMAT_R16G16_FLOAT ||
 507                             format == PIPE_FORMAT_A16_FLOAT ||
 508                             format == PIPE_FORMAT_L16_FLOAT ||
 509                             format == PIPE_FORMAT_L16A16_FLOAT ||
 510                             format == PIPE_FORMAT_R16A16_FLOAT ||
 511                             format == PIPE_FORMAT_I16_FLOAT;
 512     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 513                             format == PIPE_FORMAT_R16G16_FLOAT ||
 514                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 515                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 516                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 517     const struct util_format_description *desc;
 518
 519     if (!util_format_is_supported(format, usage))
 520        return FALSE;
 521
 522     /* Check multisampling support. */
 523     switch (sample_count) {
 524         case 0:
 525         case 1:
 526             break;
 527         case 2:
 528         case 4:
 529         case 6:
 530             /* We need DRM 2.8.0. */
 531             if (!drm_2_8_0) {
 532                 return FALSE;
 533             }
 534             /* No texturing and scanout. */
 535             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 536                          PIPE_BIND_DISPLAY_TARGET |
 537                          PIPE_BIND_SCANOUT)) {
 538                 return FALSE;
 539             }
 540
 541             desc = util_format_description(format);
 542
 543             if (is_r500) {
 544                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 545                 if (!util_format_is_depth_or_stencil(format) &&
 546                     !util_format_is_rgba8_variant(desc) &&
 547                     !util_format_is_rgba1010102_variant(desc) &&
 548                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 549                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 550                     return FALSE;
 551                 }
 552             } else {
 553                 /* Only allow depth/stencil, RGBA8. */
 554                 if (!util_format_is_depth_or_stencil(format) &&
 555                     !util_format_is_rgba8_variant(desc)) {
 556                     return FALSE;
 557                 }
 558             }
 559             break;
 560         default:
 561             return FALSE;
 562     }
 563
 564     /* Check sampler format support. */
 565     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 566         /* these two are broken for an unknown reason */
 567         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 568         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 569         /* ATI1N is r5xx-only. */
 570         (is_r500 || !is_ati1n) &&
 571         /* ATI2N is supported on r4xx-r5xx. */
 572         (is_r400 || is_r500 || !is_ati2n) &&
 573         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 574         (drm_2_8_0 || !is_x16f_xy16f) &&
 575         r300_is_sampler_format_supported(format)) {
 576         retval |= PIPE_BIND_SAMPLER_VIEW;
 577     }
 578
 579     /* Check colorbuffer format support. */
 580     if ((usage & (PIPE_BIND_RENDER_TARGET |
 581                   PIPE_BIND_DISPLAY_TARGET |
 582                   PIPE_BIND_SCANOUT |
 583                   PIPE_BIND_SHARED |
 584                   PIPE_BIND_BLENDABLE)) &&
 585         /* 2101010 cannot be rendered to on non-r5xx. */
 586         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 587         r300_is_colorbuffer_format_supported(format)) {
 588         retval |= usage &
 589             (PIPE_BIND_RENDER_TARGET |
 590              PIPE_BIND_DISPLAY_TARGET |
 591              PIPE_BIND_SCANOUT |
 592              PIPE_BIND_SHARED);
 593
 594         if (r300_is_blending_supported(r300_screen(screen), format)) {
 595             retval |= usage & PIPE_BIND_BLENDABLE;
 596         }
 597     }
 598
 599     /* Check depth-stencil format support. */
 600     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 601         r300_is_zs_format_supported(format)) {
 602         retval |= PIPE_BIND_DEPTH_STENCIL;
 603     }
 604
 605     /* Check vertex buffer format support. */
 606     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 607         if (r300_screen(screen)->caps.has_tcl) {
 608             /* Half float is supported on >= R400. */
 609             if ((is_r400 || is_r500 || !is_half_float) &&
 610                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 611                 retval |= PIPE_BIND_VERTEX_BUFFER;
 612             }
 613         } else {
 614             /* SW TCL */
 615             if (!util_format_is_pure_integer(format)) {
 616                 retval |= PIPE_BIND_VERTEX_BUFFER;
 617             }
 618         }
 619     }
 620
 621     /* Transfers are always supported. */
 622     if (usage & PIPE_BIND_TRANSFER_READ)
 623         retval |= PIPE_BIND_TRANSFER_READ;
 624     if (usage & PIPE_BIND_TRANSFER_WRITE)
 625         retval |= PIPE_BIND_TRANSFER_WRITE;
 626
 627     return retval == usage;
 628 }
 629
 630 static void r300_destroy_screen(struct pipe_screen* pscreen)
 631 {
 632     struct r300_screen* r300screen = r300_screen(pscreen);
 633     struct radeon_winsys *rws = radeon_winsys(pscreen);
 634
 635     if (rws && !rws->unref(rws))
 636       return;
 637
 638     pipe_mutex_destroy(r300screen->cmask_mutex);
 639
 640     if (rws)
 641       rws->destroy(rws);
 642
 643     FREE(r300screen);
 644 }
 645
 646 static void r300_fence_reference(struct pipe_screen *screen,
 647                                  struct pipe_fence_handle **ptr,
 648                                  struct pipe_fence_handle *fence)
 649 {
 650     struct radeon_winsys *rws = r300_screen(screen)->rws;
 651
 652     rws->fence_reference(ptr, fence);
 653 }
 654
 655 static boolean r300_fence_signalled(struct pipe_screen *screen,
 656                                     struct pipe_fence_handle *fence)
 657 {
 658     struct radeon_winsys *rws = r300_screen(screen)->rws;
 659
 660     return rws->fence_wait(rws, fence, 0);
 661 }
 662
 663 static boolean r300_fence_finish(struct pipe_screen *screen,
 664                                  struct pipe_fence_handle *fence,
 665                                  uint64_t timeout)
 666 {
 667     struct radeon_winsys *rws = r300_screen(screen)->rws;
 668
 669     return rws->fence_wait(rws, fence, timeout);
 670 }
 671
 672 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 673 {
 674     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 675
 676     if (!r300screen) {
 677         FREE(r300screen);
 678         return NULL;
 679     }
 680
 681     rws->query_info(rws, &r300screen->info);
 682
 683     r300_init_debug(r300screen);
 684     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 685
 686     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 687         r300screen->caps.zmask_ram = 0;
 688     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 689         r300screen->caps.hiz_ram = 0;
 690
 691     if (r300screen->info.drm_minor < 8)
 692         r300screen->caps.has_us_format = FALSE;
 693
 694     r300screen->rws = rws;
 695     r300screen->screen.destroy = r300_destroy_screen;
 696     r300screen->screen.get_name = r300_get_name;
 697     r300screen->screen.get_vendor = r300_get_vendor;
 698     r300screen->screen.get_param = r300_get_param;
 699     r300screen->screen.get_shader_param = r300_get_shader_param;
 700     r300screen->screen.get_paramf = r300_get_paramf;
 701     r300screen->screen.get_video_param = r300_get_video_param;
 702     r300screen->screen.is_format_supported = r300_is_format_supported;
 703     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 704     r300screen->screen.context_create = r300_create_context;
 705     r300screen->screen.fence_reference = r300_fence_reference;
 706     r300screen->screen.fence_signalled = r300_fence_signalled;
 707     r300screen->screen.fence_finish = r300_fence_finish;
 708
 709     r300_init_screen_resource_functions(r300screen);
 710
 711     util_format_s3tc_init();
 712     pipe_mutex_init(r300screen->cmask_mutex);
 713
 714     return &r300screen->screen;
 715 }