src/gallium/drivers/virgl/virgl_screen.c

   1 /*
   2  * Copyright 2014, 2015 Red Hat.
   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 "util/u_memory.h"
  24 #include "util/u_format.h"
  25 #include "util/u_format_s3tc.h"
  26 #include "util/u_video.h"
  27 #include "util/os_time.h"
  28 #include "pipe/p_defines.h"
  29 #include "pipe/p_screen.h"
  30
  31 #include "tgsi/tgsi_exec.h"
  32
  33 #include "virgl_screen.h"
  34 #include "virgl_resource.h"
  35 #include "virgl_public.h"
  36 #include "virgl_context.h"
  37
  38 #define SP_MAX_TEXTURE_2D_LEVELS 15  /* 16K x 16K */
  39 #define SP_MAX_TEXTURE_3D_LEVELS 9   /* 512 x 512 x 512 */
  40 #define SP_MAX_TEXTURE_CUBE_LEVELS 13  /* 4K x 4K */
  41
  42 static const char *
  43 virgl_get_vendor(struct pipe_screen *screen)
  44 {
  45    return "Red Hat";
  46 }
  47
  48
  49 static const char *
  50 virgl_get_name(struct pipe_screen *screen)
  51 {
  52    return "virgl";
  53 }
  54
  55 static int
  56 virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
  57 {
  58    struct virgl_screen *vscreen = virgl_screen(screen);
  59    switch (param) {
  60    case PIPE_CAP_NPOT_TEXTURES:
  61       return 1;
  62    case PIPE_CAP_SM3:
  63       return 1;
  64    case PIPE_CAP_ANISOTROPIC_FILTER:
  65       return 1;
  66    case PIPE_CAP_POINT_SPRITE:
  67       return 1;
  68    case PIPE_CAP_MAX_RENDER_TARGETS:
  69       return vscreen->caps.caps.v1.max_render_targets;
  70    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  71       return vscreen->caps.caps.v1.max_dual_source_render_targets;
  72    case PIPE_CAP_OCCLUSION_QUERY:
  73       return vscreen->caps.caps.v1.bset.occlusion_query;
  74    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  75       return vscreen->caps.caps.v1.bset.mirror_clamp;
  76    case PIPE_CAP_TEXTURE_SWIZZLE:
  77       return 1;
  78    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  79       return SP_MAX_TEXTURE_2D_LEVELS;
  80    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  81       return SP_MAX_TEXTURE_3D_LEVELS;
  82    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  83       return SP_MAX_TEXTURE_CUBE_LEVELS;
  84    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  85       return 1;
  86    case PIPE_CAP_INDEP_BLEND_ENABLE:
  87       return vscreen->caps.caps.v1.bset.indep_blend_enable;
  88    case PIPE_CAP_INDEP_BLEND_FUNC:
  89       return vscreen->caps.caps.v1.bset.indep_blend_func;
  90    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  91    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  92    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  93       return 1;
  94    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  95       return vscreen->caps.caps.v1.bset.fragment_coord_conventions;
  96    case PIPE_CAP_DEPTH_CLIP_DISABLE:
  97       return vscreen->caps.caps.v1.bset.depth_clip_disable;
  98    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
  99       return vscreen->caps.caps.v1.max_streamout_buffers;
 100    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 101    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 102       return 16*4;
 103    case PIPE_CAP_PRIMITIVE_RESTART:
 104       return vscreen->caps.caps.v1.bset.primitive_restart;
 105    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 106       return vscreen->caps.caps.v1.bset.shader_stencil_export;
 107    case PIPE_CAP_TGSI_INSTANCEID:
 108    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 109       return 1;
 110    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 111       return vscreen->caps.caps.v1.bset.seamless_cube_map;
 112    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 113       return vscreen->caps.caps.v1.bset.seamless_cube_map_per_texture;
 114    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 115       return vscreen->caps.caps.v1.max_texture_array_layers;
 116    case PIPE_CAP_MIN_TEXEL_OFFSET:
 117       return vscreen->caps.caps.v2.min_texel_offset;
 118    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 119       return vscreen->caps.caps.v2.min_texture_gather_offset;
 120    case PIPE_CAP_MAX_TEXEL_OFFSET:
 121       return vscreen->caps.caps.v2.max_texel_offset;
 122    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 123       return vscreen->caps.caps.v2.max_texture_gather_offset;
 124    case PIPE_CAP_CONDITIONAL_RENDER:
 125       return vscreen->caps.caps.v1.bset.conditional_render;
 126    case PIPE_CAP_TEXTURE_BARRIER:
 127       return 0;
 128    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 129       return 1;
 130    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 131    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 132       return vscreen->caps.caps.v1.bset.color_clamping;
 133    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 134       return 1;
 135    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 136       return vscreen->caps.caps.v1.glsl_level;
 137    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 138       return MIN2(vscreen->caps.caps.v1.glsl_level, 140);
 139    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 140       return 0;
 141    case PIPE_CAP_COMPUTE:
 142       return 0;
 143    case PIPE_CAP_USER_VERTEX_BUFFERS:
 144       return 0;
 145    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 146       return vscreen->caps.caps.v2.uniform_buffer_offset_alignment;
 147    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 148    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 149       return vscreen->caps.caps.v1.bset.streamout_pause_resume;
 150    case PIPE_CAP_START_INSTANCE:
 151       return vscreen->caps.caps.v1.bset.start_instance;
 152    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 153    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 154    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 155    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 156    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 157       return 0;
 158    case PIPE_CAP_QUERY_TIMESTAMP:
 159       return 1;
 160    case PIPE_CAP_QUERY_TIME_ELAPSED:
 161       return 0;
 162    case PIPE_CAP_TGSI_TEXCOORD:
 163       return 0;
 164    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 165       return VIRGL_MAP_BUFFER_ALIGNMENT;
 166    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 167       return vscreen->caps.caps.v1.max_tbo_size > 0;
 168    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 169       return vscreen->caps.caps.v2.texture_buffer_offset_alignment;
 170    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 171       return 0;
 172    case PIPE_CAP_CUBE_MAP_ARRAY:
 173       return vscreen->caps.caps.v1.bset.cube_map_array;
 174    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 175       return vscreen->caps.caps.v1.bset.texture_multisample;
 176    case PIPE_CAP_MAX_VIEWPORTS:
 177       return vscreen->caps.caps.v1.max_viewports;
 178    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 179       return vscreen->caps.caps.v1.max_tbo_size;
 180    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 181    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 182    case PIPE_CAP_ENDIANNESS:
 183       return 0;
 184    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 185    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 186       return 1;
 187    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 188       return 0;
 189    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 190       return vscreen->caps.caps.v2.max_geom_output_vertices;
 191    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 192       return vscreen->caps.caps.v2.max_geom_total_output_components;
 193    case PIPE_CAP_TEXTURE_QUERY_LOD:
 194       return vscreen->caps.caps.v1.bset.texture_query_lod;
 195    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 196       return vscreen->caps.caps.v1.max_texture_gather_components;
 197    case PIPE_CAP_DRAW_INDIRECT:
 198       return vscreen->caps.caps.v1.bset.has_indirect_draw;
 199    case PIPE_CAP_SAMPLE_SHADING:
 200    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 201       return vscreen->caps.caps.v1.bset.has_sample_shading;
 202    case PIPE_CAP_CULL_DISTANCE:
 203       return vscreen->caps.caps.v1.bset.has_cull;
 204    case PIPE_CAP_MAX_VERTEX_STREAMS:
 205       return vscreen->caps.caps.v1.glsl_level >= 400 ? 4 : 1;
 206    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 207       return vscreen->caps.caps.v1.bset.conditional_render_inverted;
 208    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 209       return vscreen->caps.caps.v1.bset.derivative_control;
 210    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 211       return vscreen->caps.caps.v1.bset.polygon_offset_clamp;
 212    case PIPE_CAP_QUERY_SO_OVERFLOW:
 213       return vscreen->caps.caps.v1.bset.transform_feedback_overflow_query;
 214    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 215       return vscreen->caps.caps.v2.shader_buffer_offset_alignment;
 216    case PIPE_CAP_TEXTURE_GATHER_SM5:
 217    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 218    case PIPE_CAP_FAKE_SW_MSAA:
 219    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 220    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 221    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 222    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 223    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 224    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 225    case PIPE_CAP_CLIP_HALFZ:
 226    case PIPE_CAP_VERTEXID_NOBASE:
 227    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 228    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 229    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 230    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 231    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 232    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 233    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 234    case PIPE_CAP_TGSI_TXQS:
 235    case PIPE_CAP_SHAREABLE_SHADERS:
 236    case PIPE_CAP_CLEAR_TEXTURE:
 237    case PIPE_CAP_DRAW_PARAMETERS:
 238    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 239    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 240    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 241    case PIPE_CAP_INVALIDATE_BUFFER:
 242    case PIPE_CAP_GENERATE_MIPMAP:
 243    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 244    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 245    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 246    case PIPE_CAP_STRING_MARKER:
 247    case PIPE_CAP_QUERY_MEMORY_INFO:
 248    case PIPE_CAP_PCI_GROUP:
 249    case PIPE_CAP_PCI_BUS:
 250    case PIPE_CAP_PCI_DEVICE:
 251    case PIPE_CAP_PCI_FUNCTION:
 252    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 253    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 254    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 255    case PIPE_CAP_TGSI_VOTE:
 256    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 257    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 258    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 259    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 260    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 261    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 262    case PIPE_CAP_TGSI_FS_FBFETCH:
 263    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 264    case PIPE_CAP_INT64:
 265    case PIPE_CAP_INT64_DIVMOD:
 266    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 267    case PIPE_CAP_TGSI_CLOCK:
 268    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 269    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 270    case PIPE_CAP_TGSI_BALLOT:
 271    case PIPE_CAP_DOUBLES:
 272    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 273    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 274    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 275    case PIPE_CAP_POST_DEPTH_COVERAGE:
 276    case PIPE_CAP_BINDLESS_TEXTURE:
 277    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 278    case PIPE_CAP_MEMOBJ:
 279    case PIPE_CAP_LOAD_CONSTBUF:
 280    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 281    case PIPE_CAP_TILE_RASTER_ORDER:
 282    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 283    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 284    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 285    case PIPE_CAP_FENCE_SIGNAL:
 286    case PIPE_CAP_CONSTBUF0_FLAGS:
 287    case PIPE_CAP_PACKED_UNIFORMS:
 288    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 289    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 290    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 291    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 292    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 293    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 294       return 0;
 295    case PIPE_CAP_VENDOR_ID:
 296       return 0x1af4;
 297    case PIPE_CAP_DEVICE_ID:
 298       return 0x1010;
 299    case PIPE_CAP_ACCELERATED:
 300       return 1;
 301    case PIPE_CAP_UMA:
 302    case PIPE_CAP_VIDEO_MEMORY:
 303       return 0;
 304    case PIPE_CAP_NATIVE_FENCE_FD:
 305       return 0;
 306    }
 307    /* should only get here on unhandled cases */
 308    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 309    return 0;
 310 }
 311
 312 static int
 313 virgl_get_shader_param(struct pipe_screen *screen,
 314                        enum pipe_shader_type shader,
 315                        enum pipe_shader_cap param)
 316 {
 317    struct virgl_screen *vscreen = virgl_screen(screen);
 318    switch(shader)
 319    {
 320    case PIPE_SHADER_FRAGMENT:
 321    case PIPE_SHADER_VERTEX:
 322    case PIPE_SHADER_GEOMETRY:
 323       switch (param) {
 324       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 325       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 326       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 327       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 328          return INT_MAX;
 329       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 330       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 331       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 332          return 1;
 333       case PIPE_SHADER_CAP_MAX_INPUTS:
 334          if (vscreen->caps.caps.v1.glsl_level < 150)
 335             return vscreen->caps.caps.v2.max_vertex_attribs;
 336          return (shader == PIPE_SHADER_VERTEX ||
 337                  shader == PIPE_SHADER_GEOMETRY) ? vscreen->caps.caps.v2.max_vertex_attribs : 32;
 338       case PIPE_SHADER_CAP_MAX_OUTPUTS:
 339          if (shader == PIPE_SHADER_FRAGMENT)
 340             return vscreen->caps.caps.v1.max_render_targets;
 341          return vscreen->caps.caps.v2.max_vertex_outputs;
 342      // case PIPE_SHADER_CAP_MAX_CONSTS:
 343      //    return 4096;
 344       case PIPE_SHADER_CAP_MAX_TEMPS:
 345          return 256;
 346       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 347          return vscreen->caps.caps.v1.max_uniform_blocks;
 348     //  case PIPE_SHADER_CAP_MAX_ADDRS:
 349      //    return 1;
 350       case PIPE_SHADER_CAP_SUBROUTINES:
 351          return 1;
 352       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 353             return 16;
 354       case PIPE_SHADER_CAP_INTEGERS:
 355          return vscreen->caps.caps.v1.glsl_level >= 130;
 356       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 357          return 32;
 358       case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 359          return 4096 * sizeof(float[4]);
 360       case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 361       case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
 362       case PIPE_SHADER_CAP_INT64_ATOMICS:
 363       case PIPE_SHADER_CAP_FP16:
 364       case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
 365       case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
 366       default:
 367          return 0;
 368       }
 369    default:
 370       return 0;
 371    }
 372 }
 373
 374 static float
 375 virgl_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 376 {
 377    struct virgl_screen *vscreen = virgl_screen(screen);
 378    switch (param) {
 379    case PIPE_CAPF_MAX_LINE_WIDTH:
 380       return vscreen->caps.caps.v2.max_aliased_line_width;
 381    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 382       return vscreen->caps.caps.v2.max_smooth_line_width;
 383    case PIPE_CAPF_MAX_POINT_WIDTH:
 384       return vscreen->caps.caps.v2.max_aliased_point_size;
 385    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 386       return vscreen->caps.caps.v2.max_smooth_point_size;
 387    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 388       return 16.0;
 389    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 390       return vscreen->caps.caps.v2.max_texture_lod_bias;
 391    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 392    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 393    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 394       return 0.0f;
 395    }
 396    /* should only get here on unhandled cases */
 397    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 398    return 0.0;
 399 }
 400
 401 static boolean
 402 virgl_is_vertex_format_supported(struct pipe_screen *screen,
 403                                  enum pipe_format format)
 404 {
 405    struct virgl_screen *vscreen = virgl_screen(screen);
 406    const struct util_format_description *format_desc;
 407    int i;
 408
 409    format_desc = util_format_description(format);
 410    if (!format_desc)
 411       return FALSE;
 412
 413    if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
 414       int vformat = VIRGL_FORMAT_R11G11B10_FLOAT;
 415       int big = vformat / 32;
 416       int small = vformat % 32;
 417       if (!(vscreen->caps.caps.v1.vertexbuffer.bitmask[big] & (1 << small)))
 418          return FALSE;
 419       return TRUE;
 420    }
 421
 422    /* Find the first non-VOID channel. */
 423    for (i = 0; i < 4; i++) {
 424       if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 425          break;
 426       }
 427    }
 428
 429    if (i == 4)
 430       return FALSE;
 431
 432    if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 433       return FALSE;
 434
 435    if (format_desc->channel[i].type == UTIL_FORMAT_TYPE_FIXED)
 436       return FALSE;
 437    return TRUE;
 438 }
 439
 440 /**
 441  * Query format support for creating a texture, drawing surface, etc.
 442  * \param format  the format to test
 443  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 444  */
 445 static boolean
 446 virgl_is_format_supported( struct pipe_screen *screen,
 447                                  enum pipe_format format,
 448                                  enum pipe_texture_target target,
 449                                  unsigned sample_count,
 450                                  unsigned bind)
 451 {
 452    struct virgl_screen *vscreen = virgl_screen(screen);
 453    const struct util_format_description *format_desc;
 454    int i;
 455
 456    assert(target == PIPE_BUFFER ||
 457           target == PIPE_TEXTURE_1D ||
 458           target == PIPE_TEXTURE_1D_ARRAY ||
 459           target == PIPE_TEXTURE_2D ||
 460           target == PIPE_TEXTURE_2D_ARRAY ||
 461           target == PIPE_TEXTURE_RECT ||
 462           target == PIPE_TEXTURE_3D ||
 463           target == PIPE_TEXTURE_CUBE ||
 464           target == PIPE_TEXTURE_CUBE_ARRAY);
 465
 466    format_desc = util_format_description(format);
 467    if (!format_desc)
 468       return FALSE;
 469
 470    if (util_format_is_intensity(format))
 471       return FALSE;
 472
 473    if (sample_count > 1) {
 474       if (!vscreen->caps.caps.v1.bset.texture_multisample)
 475          return FALSE;
 476       if (sample_count > vscreen->caps.caps.v1.max_samples)
 477          return FALSE;
 478    }
 479
 480    if (bind & PIPE_BIND_VERTEX_BUFFER) {
 481       return virgl_is_vertex_format_supported(screen, format);
 482    }
 483
 484    if (bind & PIPE_BIND_RENDER_TARGET) {
 485       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 486          return FALSE;
 487
 488       /*
 489        * Although possible, it is unnatural to render into compressed or YUV
 490        * surfaces. So disable these here to avoid going into weird paths
 491        * inside the state trackers.
 492        */
 493       if (format_desc->block.width != 1 ||
 494           format_desc->block.height != 1)
 495          return FALSE;
 496
 497       {
 498          int big = format / 32;
 499          int small = format % 32;
 500          if (!(vscreen->caps.caps.v1.render.bitmask[big] & (1 << small)))
 501             return FALSE;
 502       }
 503    }
 504
 505    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 506       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 507          return FALSE;
 508    }
 509
 510    /*
 511     * All other operations (sampling, transfer, etc).
 512     */
 513
 514    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 515       goto out_lookup;
 516    }
 517    if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 518       goto out_lookup;
 519    }
 520    if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC) {
 521       goto out_lookup;
 522    }
 523
 524    if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
 525       goto out_lookup;
 526    } else if (format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
 527       goto out_lookup;
 528    }
 529
 530    /* Find the first non-VOID channel. */
 531    for (i = 0; i < 4; i++) {
 532       if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 533          break;
 534       }
 535    }
 536
 537    if (i == 4)
 538       return FALSE;
 539
 540    /* no L4A4 */
 541    if (format_desc->nr_channels < 4 && format_desc->channel[i].size == 4)
 542       return FALSE;
 543
 544  out_lookup:
 545    {
 546       int big = format / 32;
 547       int small = format % 32;
 548       if (!(vscreen->caps.caps.v1.sampler.bitmask[big] & (1 << small)))
 549          return FALSE;
 550    }
 551    /*
 552     * Everything else should be supported by u_format.
 553     */
 554    return TRUE;
 555 }
 556
 557 static void virgl_flush_frontbuffer(struct pipe_screen *screen,
 558                                       struct pipe_resource *res,
 559                                       unsigned level, unsigned layer,
 560                                     void *winsys_drawable_handle, struct pipe_box *sub_box)
 561 {
 562    struct virgl_screen *vscreen = virgl_screen(screen);
 563    struct virgl_winsys *vws = vscreen->vws;
 564    struct virgl_resource *vres = virgl_resource(res);
 565
 566    if (vws->flush_frontbuffer)
 567       vws->flush_frontbuffer(vws, vres->hw_res, level, layer, winsys_drawable_handle,
 568                              sub_box);
 569 }
 570
 571 static void virgl_fence_reference(struct pipe_screen *screen,
 572                                   struct pipe_fence_handle **ptr,
 573                                   struct pipe_fence_handle *fence)
 574 {
 575    struct virgl_screen *vscreen = virgl_screen(screen);
 576    struct virgl_winsys *vws = vscreen->vws;
 577
 578    vws->fence_reference(vws, ptr, fence);
 579 }
 580
 581 static boolean virgl_fence_finish(struct pipe_screen *screen,
 582                                   struct pipe_context *ctx,
 583                                   struct pipe_fence_handle *fence,
 584                                   uint64_t timeout)
 585 {
 586    struct virgl_screen *vscreen = virgl_screen(screen);
 587    struct virgl_winsys *vws = vscreen->vws;
 588
 589    return vws->fence_wait(vws, fence, timeout);
 590 }
 591
 592 static uint64_t
 593 virgl_get_timestamp(struct pipe_screen *_screen)
 594 {
 595    return os_time_get_nano();
 596 }
 597
 598 static void
 599 virgl_destroy_screen(struct pipe_screen *screen)
 600 {
 601    struct virgl_screen *vscreen = virgl_screen(screen);
 602    struct virgl_winsys *vws = vscreen->vws;
 603
 604    slab_destroy_parent(&vscreen->texture_transfer_pool);
 605
 606    if (vws)
 607       vws->destroy(vws);
 608    FREE(vscreen);
 609 }
 610
 611 struct pipe_screen *
 612 virgl_create_screen(struct virgl_winsys *vws)
 613 {
 614    struct virgl_screen *screen = CALLOC_STRUCT(virgl_screen);
 615
 616    if (!screen)
 617       return NULL;
 618
 619    screen->vws = vws;
 620    screen->base.get_name = virgl_get_name;
 621    screen->base.get_vendor = virgl_get_vendor;
 622    screen->base.get_param = virgl_get_param;
 623    screen->base.get_shader_param = virgl_get_shader_param;
 624    screen->base.get_paramf = virgl_get_paramf;
 625    screen->base.is_format_supported = virgl_is_format_supported;
 626    screen->base.destroy = virgl_destroy_screen;
 627    screen->base.context_create = virgl_context_create;
 628    screen->base.flush_frontbuffer = virgl_flush_frontbuffer;
 629    screen->base.get_timestamp = virgl_get_timestamp;
 630    screen->base.fence_reference = virgl_fence_reference;
 631    //screen->base.fence_signalled = virgl_fence_signalled;
 632    screen->base.fence_finish = virgl_fence_finish;
 633
 634    virgl_init_screen_resource_functions(&screen->base);
 635
 636    vws->get_caps(vws, &screen->caps);
 637
 638    screen->refcnt = 1;
 639
 640    slab_create_parent(&screen->texture_transfer_pool, sizeof(struct virgl_transfer), 16);
 641
 642    return &screen->base;
 643 }