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_screen.h"
  27 #include "util/u_video.h"
  28 #include "util/u_math.h"
  29 #include "util/os_time.h"
  30 #include "pipe/p_defines.h"
  31 #include "pipe/p_screen.h"
  32
  33 #include "tgsi/tgsi_exec.h"
  34
  35 #include "virgl_screen.h"
  36 #include "virgl_resource.h"
  37 #include "virgl_public.h"
  38 #include "virgl_context.h"
  39
  40 int virgl_debug = 0;
  41 static const struct debug_named_value debug_options[] = {
  42    { "verbose", VIRGL_DEBUG_VERBOSE, NULL },
  43    { "tgsi", VIRGL_DEBUG_TGSI, NULL },
  44    DEBUG_NAMED_VALUE_END
  45 };
  46 DEBUG_GET_ONCE_FLAGS_OPTION(virgl_debug, "VIRGL_DEBUG", debug_options, 0)
  47
  48 static const char *
  49 virgl_get_vendor(struct pipe_screen *screen)
  50 {
  51    return "Red Hat";
  52 }
  53
  54
  55 static const char *
  56 virgl_get_name(struct pipe_screen *screen)
  57 {
  58    return "virgl";
  59 }
  60
  61 static int
  62 virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
  63 {
  64    struct virgl_screen *vscreen = virgl_screen(screen);
  65    switch (param) {
  66    case PIPE_CAP_NPOT_TEXTURES:
  67       return 1;
  68    case PIPE_CAP_SM3:
  69       return 1;
  70    case PIPE_CAP_ANISOTROPIC_FILTER:
  71       return 1;
  72    case PIPE_CAP_POINT_SPRITE:
  73       return 1;
  74    case PIPE_CAP_MAX_RENDER_TARGETS:
  75       return vscreen->caps.caps.v1.max_render_targets;
  76    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  77       return vscreen->caps.caps.v1.max_dual_source_render_targets;
  78    case PIPE_CAP_OCCLUSION_QUERY:
  79       return vscreen->caps.caps.v1.bset.occlusion_query;
  80    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  81    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
  82       return vscreen->caps.caps.v1.bset.mirror_clamp;
  83    case PIPE_CAP_TEXTURE_SWIZZLE:
  84       return 1;
  85    case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
  86       if (vscreen->caps.caps.v2.max_texture_2d_size)
  87          return vscreen->caps.caps.v2.max_texture_2d_size;
  88       return 16384;
  89    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  90       if (vscreen->caps.caps.v2.max_texture_3d_size)
  91          return 1 + util_logbase2(vscreen->caps.caps.v2.max_texture_3d_size);
  92       return 9; /* 256 x 256 x 256 */
  93    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  94       if (vscreen->caps.caps.v2.max_texture_cube_size)
  95          return 1 + util_logbase2(vscreen->caps.caps.v2.max_texture_cube_size);
  96       return 13; /* 4K x 4K */
  97    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  98       return 1;
  99    case PIPE_CAP_INDEP_BLEND_ENABLE:
 100       return vscreen->caps.caps.v1.bset.indep_blend_enable;
 101    case PIPE_CAP_INDEP_BLEND_FUNC:
 102       return vscreen->caps.caps.v1.bset.indep_blend_func;
 103    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 104    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 105    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 106       return 1;
 107    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 108       return vscreen->caps.caps.v1.bset.fragment_coord_conventions;
 109    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 110       return vscreen->caps.caps.v1.bset.depth_clip_disable;
 111    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 112       return vscreen->caps.caps.v1.max_streamout_buffers;
 113    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 114    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 115       return 16*4;
 116    case PIPE_CAP_PRIMITIVE_RESTART:
 117       return vscreen->caps.caps.v1.bset.primitive_restart;
 118    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 119       return vscreen->caps.caps.v1.bset.shader_stencil_export;
 120    case PIPE_CAP_TGSI_INSTANCEID:
 121    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 122       return 1;
 123    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 124       return vscreen->caps.caps.v1.bset.seamless_cube_map;
 125    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 126       return vscreen->caps.caps.v1.bset.seamless_cube_map_per_texture;
 127    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 128       return vscreen->caps.caps.v1.max_texture_array_layers;
 129    case PIPE_CAP_MIN_TEXEL_OFFSET:
 130       return vscreen->caps.caps.v2.min_texel_offset;
 131    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 132       return vscreen->caps.caps.v2.min_texture_gather_offset;
 133    case PIPE_CAP_MAX_TEXEL_OFFSET:
 134       return vscreen->caps.caps.v2.max_texel_offset;
 135    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 136       return vscreen->caps.caps.v2.max_texture_gather_offset;
 137    case PIPE_CAP_CONDITIONAL_RENDER:
 138       return vscreen->caps.caps.v1.bset.conditional_render;
 139    case PIPE_CAP_TEXTURE_BARRIER:
 140       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TEXTURE_BARRIER;
 141    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 142       return 1;
 143    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 144    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 145       return vscreen->caps.caps.v1.bset.color_clamping;
 146    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 147       return (vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_FBO_MIXED_COLOR_FORMATS) ||
 148             (vscreen->caps.caps.v2.host_feature_check_version < 1);
 149    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 150       return vscreen->caps.caps.v1.glsl_level;
 151    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 152       return MIN2(vscreen->caps.caps.v1.glsl_level, 140);
 153    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 154    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
 155       return 0;
 156    case PIPE_CAP_COMPUTE:
 157       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COMPUTE_SHADER;
 158    case PIPE_CAP_USER_VERTEX_BUFFERS:
 159       return 0;
 160    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 161       return vscreen->caps.caps.v2.uniform_buffer_offset_alignment;
 162    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 163    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 164       return vscreen->caps.caps.v1.bset.streamout_pause_resume;
 165    case PIPE_CAP_START_INSTANCE:
 166       return vscreen->caps.caps.v1.bset.start_instance;
 167    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 168    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 169    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 170    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 171    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 172       return 0;
 173    case PIPE_CAP_QUERY_TIMESTAMP:
 174       return 1;
 175    case PIPE_CAP_QUERY_TIME_ELAPSED:
 176       return 1;
 177    case PIPE_CAP_TGSI_TEXCOORD:
 178       return 0;
 179    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 180       return VIRGL_MAP_BUFFER_ALIGNMENT;
 181    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 182       return vscreen->caps.caps.v1.max_tbo_size > 0;
 183    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 184       return vscreen->caps.caps.v2.texture_buffer_offset_alignment;
 185    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 186       return 0;
 187    case PIPE_CAP_CUBE_MAP_ARRAY:
 188       return vscreen->caps.caps.v1.bset.cube_map_array;
 189    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 190       return vscreen->caps.caps.v1.bset.texture_multisample;
 191    case PIPE_CAP_MAX_VIEWPORTS:
 192       return vscreen->caps.caps.v1.max_viewports;
 193    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 194       return vscreen->caps.caps.v1.max_tbo_size;
 195    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 196    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 197    case PIPE_CAP_ENDIANNESS:
 198       return 0;
 199    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 200    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 201       return 1;
 202    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 203       return 0;
 204    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 205       return vscreen->caps.caps.v2.max_geom_output_vertices;
 206    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 207       return vscreen->caps.caps.v2.max_geom_total_output_components;
 208    case PIPE_CAP_TEXTURE_QUERY_LOD:
 209       return vscreen->caps.caps.v1.bset.texture_query_lod;
 210    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 211       return vscreen->caps.caps.v1.max_texture_gather_components;
 212    case PIPE_CAP_DRAW_INDIRECT:
 213       return vscreen->caps.caps.v1.bset.has_indirect_draw;
 214    case PIPE_CAP_SAMPLE_SHADING:
 215    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 216       return vscreen->caps.caps.v1.bset.has_sample_shading;
 217    case PIPE_CAP_CULL_DISTANCE:
 218       return vscreen->caps.caps.v1.bset.has_cull;
 219    case PIPE_CAP_MAX_VERTEX_STREAMS:
 220       return ((vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TRANSFORM_FEEDBACK3) ||
 221               (vscreen->caps.caps.v2.host_feature_check_version < 2)) ? 4 : 1;
 222    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 223       return vscreen->caps.caps.v1.bset.conditional_render_inverted;
 224    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 225       return vscreen->caps.caps.v1.bset.derivative_control;
 226    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 227       return vscreen->caps.caps.v1.bset.polygon_offset_clamp;
 228    case PIPE_CAP_QUERY_SO_OVERFLOW:
 229       return vscreen->caps.caps.v1.bset.transform_feedback_overflow_query;
 230    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 231       return vscreen->caps.caps.v2.shader_buffer_offset_alignment;
 232    case PIPE_CAP_DOUBLES:
 233       return vscreen->caps.caps.v1.bset.has_fp64 ||
 234             (vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_FAKE_FP64);
 235    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 236       return vscreen->caps.caps.v2.max_shader_patch_varyings;
 237    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 238       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TEXTURE_VIEW;
 239    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 240       return vscreen->caps.caps.v2.max_vertex_attrib_stride;
 241    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 242       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COPY_IMAGE;
 243    case PIPE_CAP_TGSI_TXQS:
 244       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TXQS;
 245    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 246       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_FB_NO_ATTACH;
 247    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 248       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_ROBUST_BUFFER_ACCESS;
 249    case PIPE_CAP_FBFETCH:
 250       return (vscreen->caps.caps.v2.capability_bits &
 251               VIRGL_CAP_TGSI_FBFETCH) ? 1 : 0;
 252    case PIPE_CAP_TGSI_CLOCK:
 253       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_SHADER_CLOCK;
 254    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 255       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TGSI_COMPONENTS;
 256    case PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS:
 257       return vscreen->caps.caps.v2.max_combined_shader_buffers;
 258    case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
 259       return vscreen->caps.caps.v2.max_combined_atomic_counters;
 260    case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
 261       return vscreen->caps.caps.v2.max_combined_atomic_counter_buffers;
 262    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 263    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 264       return 1; /* TODO: need to introduce a hw-cap for this */
 265    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 266       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_QBO;
 267    case PIPE_CAP_MAX_VARYINGS:
 268       if (vscreen->caps.caps.v1.glsl_level < 150)
 269          return vscreen->caps.caps.v2.max_vertex_attribs;
 270       return 32;
 271    case PIPE_CAP_FAKE_SW_MSAA:
 272       /* If the host supports only one sample (e.g., if it is using softpipe),
 273        * fake multisampling to able to advertise higher GL versions. */
 274       return (vscreen->caps.caps.v1.max_samples == 1) ? 1 : 0;
 275    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 276       return !!(vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_MULTI_DRAW_INDIRECT);
 277    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 278       return !!(vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_INDIRECT_PARAMS);
 279    case PIPE_CAP_TEXTURE_GATHER_SM5:
 280    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 281    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 282    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 283    case PIPE_CAP_VERTEXID_NOBASE:
 284    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 285    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 286    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 287    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 288    case PIPE_CAP_SHAREABLE_SHADERS:
 289    case PIPE_CAP_CLEAR_TEXTURE:
 290    case PIPE_CAP_DRAW_PARAMETERS:
 291    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 292    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 293    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 294    case PIPE_CAP_INVALIDATE_BUFFER:
 295    case PIPE_CAP_GENERATE_MIPMAP:
 296    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 297    case PIPE_CAP_STRING_MARKER:
 298    case PIPE_CAP_QUERY_MEMORY_INFO:
 299    case PIPE_CAP_PCI_GROUP:
 300    case PIPE_CAP_PCI_BUS:
 301    case PIPE_CAP_PCI_DEVICE:
 302    case PIPE_CAP_PCI_FUNCTION:
 303    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 304    case PIPE_CAP_TGSI_VOTE:
 305    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 306    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 307    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 308    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 309    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 310    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 311    case PIPE_CAP_INT64:
 312    case PIPE_CAP_INT64_DIVMOD:
 313    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 314    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 315    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 316    case PIPE_CAP_TGSI_BALLOT:
 317    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 318    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 319    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 320    case PIPE_CAP_POST_DEPTH_COVERAGE:
 321    case PIPE_CAP_BINDLESS_TEXTURE:
 322    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 323    case PIPE_CAP_MEMOBJ:
 324    case PIPE_CAP_LOAD_CONSTBUF:
 325    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 326    case PIPE_CAP_TILE_RASTER_ORDER:
 327    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 328    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 329    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 330    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 331    case PIPE_CAP_FENCE_SIGNAL:
 332    case PIPE_CAP_CONSTBUF0_FLAGS:
 333    case PIPE_CAP_PACKED_UNIFORMS:
 334    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 335    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 336    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 337    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 338    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 339    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 340    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 341    case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
 342       return 0;
 343    case PIPE_CAP_CLIP_HALFZ:
 344       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_CLIP_HALFZ;
 345    case PIPE_CAP_MAX_GS_INVOCATIONS:
 346       return 32;
 347    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 348       return 1 << 27;
 349    case PIPE_CAP_VENDOR_ID:
 350       return 0x1af4;
 351    case PIPE_CAP_DEVICE_ID:
 352       return 0x1010;
 353    case PIPE_CAP_ACCELERATED:
 354       return 1;
 355    case PIPE_CAP_UMA:
 356    case PIPE_CAP_VIDEO_MEMORY:
 357       return 0;
 358    case PIPE_CAP_NATIVE_FENCE_FD:
 359       return vscreen->vws->supports_fences;
 360    case PIPE_CAP_DEST_SURFACE_SRGB_CONTROL:
 361       return (vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_SRGB_WRITE_CONTROL) ||
 362             (vscreen->caps.caps.v2.host_feature_check_version < 1);
 363    case PIPE_CAP_TGSI_SKIP_SHRINK_IO_ARRAYS:
 364       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_INDIRECT_INPUT_ADDR;
 365    default:
 366       return u_pipe_screen_get_param_defaults(screen, param);
 367    }
 368 }
 369
 370 static int
 371 virgl_get_shader_param(struct pipe_screen *screen,
 372                        enum pipe_shader_type shader,
 373                        enum pipe_shader_cap param)
 374 {
 375    struct virgl_screen *vscreen = virgl_screen(screen);
 376
 377    if ((shader == PIPE_SHADER_TESS_CTRL || shader == PIPE_SHADER_TESS_EVAL) &&
 378        !vscreen->caps.caps.v1.bset.has_tessellation_shaders)
 379       return 0;
 380
 381    if (shader == PIPE_SHADER_COMPUTE &&
 382        !(vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COMPUTE_SHADER))
 383      return 0;
 384
 385    switch(shader)
 386    {
 387    case PIPE_SHADER_FRAGMENT:
 388    case PIPE_SHADER_VERTEX:
 389    case PIPE_SHADER_GEOMETRY:
 390    case PIPE_SHADER_TESS_CTRL:
 391    case PIPE_SHADER_TESS_EVAL:
 392    case PIPE_SHADER_COMPUTE:
 393       switch (param) {
 394       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 395       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 396       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 397       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 398          return INT_MAX;
 399       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 400       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 401       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 402          return 1;
 403       case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 404       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 405          return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_INDIRECT_INPUT_ADDR;
 406       case PIPE_SHADER_CAP_MAX_INPUTS:
 407          if (vscreen->caps.caps.v1.glsl_level < 150)
 408             return vscreen->caps.caps.v2.max_vertex_attribs;
 409          return (shader == PIPE_SHADER_VERTEX ||
 410                  shader == PIPE_SHADER_GEOMETRY) ? vscreen->caps.caps.v2.max_vertex_attribs : 32;
 411       case PIPE_SHADER_CAP_MAX_OUTPUTS:
 412          if (shader == PIPE_SHADER_FRAGMENT)
 413             return vscreen->caps.caps.v1.max_render_targets;
 414          return vscreen->caps.caps.v2.max_vertex_outputs;
 415      // case PIPE_SHADER_CAP_MAX_CONSTS:
 416      //    return 4096;
 417       case PIPE_SHADER_CAP_MAX_TEMPS:
 418          return 256;
 419       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 420          return vscreen->caps.caps.v1.max_uniform_blocks;
 421     //  case PIPE_SHADER_CAP_MAX_ADDRS:
 422      //    return 1;
 423       case PIPE_SHADER_CAP_SUBROUTINES:
 424          return 1;
 425       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 426             return 16;
 427       case PIPE_SHADER_CAP_INTEGERS:
 428          return vscreen->caps.caps.v1.glsl_level >= 130;
 429       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 430          return 32;
 431       case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 432          return 4096 * sizeof(float[4]);
 433       case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 434          if (shader == PIPE_SHADER_FRAGMENT || shader == PIPE_SHADER_COMPUTE)
 435             return vscreen->caps.caps.v2.max_shader_buffer_frag_compute;
 436          else
 437             return vscreen->caps.caps.v2.max_shader_buffer_other_stages;
 438       case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 439          if (shader == PIPE_SHADER_FRAGMENT || shader == PIPE_SHADER_COMPUTE)
 440             return vscreen->caps.caps.v2.max_shader_image_frag_compute;
 441          else
 442             return vscreen->caps.caps.v2.max_shader_image_other_stages;
 443       case PIPE_SHADER_CAP_SUPPORTED_IRS:
 444          return (1 << PIPE_SHADER_IR_TGSI);
 445       case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
 446          return vscreen->caps.caps.v2.max_atomic_counters[shader];
 447       case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
 448          return vscreen->caps.caps.v2.max_atomic_counter_buffers[shader];
 449       case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 450       case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
 451       case PIPE_SHADER_CAP_INT64_ATOMICS:
 452       case PIPE_SHADER_CAP_FP16:
 453          return 0;
 454       case PIPE_SHADER_CAP_SCALAR_ISA:
 455          return 1;
 456       default:
 457          return 0;
 458       }
 459    default:
 460       return 0;
 461    }
 462 }
 463
 464 static float
 465 virgl_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 466 {
 467    struct virgl_screen *vscreen = virgl_screen(screen);
 468    switch (param) {
 469    case PIPE_CAPF_MAX_LINE_WIDTH:
 470       return vscreen->caps.caps.v2.max_aliased_line_width;
 471    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 472       return vscreen->caps.caps.v2.max_smooth_line_width;
 473    case PIPE_CAPF_MAX_POINT_WIDTH:
 474       return vscreen->caps.caps.v2.max_aliased_point_size;
 475    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 476       return vscreen->caps.caps.v2.max_smooth_point_size;
 477    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 478       return 16.0;
 479    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 480       return vscreen->caps.caps.v2.max_texture_lod_bias;
 481    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 482    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 483    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 484       return 0.0f;
 485    }
 486    /* should only get here on unhandled cases */
 487    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 488    return 0.0;
 489 }
 490
 491 static int
 492 virgl_get_compute_param(struct pipe_screen *screen,
 493                         enum pipe_shader_ir ir_type,
 494                         enum pipe_compute_cap param,
 495                         void *ret)
 496 {
 497    struct virgl_screen *vscreen = virgl_screen(screen);
 498    if (!(vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COMPUTE_SHADER))
 499       return 0;
 500    switch (param) {
 501    case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
 502       if (ret) {
 503          uint64_t *grid_size = ret;
 504          grid_size[0] = vscreen->caps.caps.v2.max_compute_grid_size[0];
 505          grid_size[1] = vscreen->caps.caps.v2.max_compute_grid_size[1];
 506          grid_size[2] = vscreen->caps.caps.v2.max_compute_grid_size[2];
 507       }
 508       return 3 * sizeof(uint64_t) ;
 509    case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
 510       if (ret) {
 511          uint64_t *block_size = ret;
 512          block_size[0] = vscreen->caps.caps.v2.max_compute_block_size[0];
 513          block_size[1] = vscreen->caps.caps.v2.max_compute_block_size[1];
 514          block_size[2] = vscreen->caps.caps.v2.max_compute_block_size[2];
 515       }
 516       return 3 * sizeof(uint64_t);
 517    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
 518       if (ret) {
 519          uint64_t *max_threads_per_block = ret;
 520          *max_threads_per_block = vscreen->caps.caps.v2.max_compute_work_group_invocations;
 521       }
 522       return sizeof(uint64_t);
 523    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
 524       if (ret) {
 525          uint64_t *max_local_size = ret;
 526          /* Value reported by the closed source driver. */
 527          *max_local_size = vscreen->caps.caps.v2.max_compute_shared_memory_size;
 528       }
 529       return sizeof(uint64_t);
 530    default:
 531       break;
 532    }
 533    return 0;
 534 }
 535
 536 static boolean
 537 has_format_bit(struct virgl_supported_format_mask *mask,
 538                enum virgl_formats fmt)
 539 {
 540    assert(fmt < VIRGL_FORMAT_MAX);
 541    unsigned val = (unsigned)fmt;
 542    unsigned idx = val / 32;
 543    unsigned bit = val % 32;
 544    assert(idx < ARRAY_SIZE(mask->bitmask));
 545    return (mask->bitmask[val / 32] & (1u << bit)) != 0;
 546 }
 547
 548 boolean
 549 virgl_has_readback_format(struct pipe_screen *screen,
 550                           enum virgl_formats fmt)
 551 {
 552    struct virgl_screen *vscreen = virgl_screen(screen);
 553    return has_format_bit(&vscreen->caps.caps.v2.supported_readback_formats,
 554                          fmt);
 555 }
 556
 557 static boolean
 558 virgl_is_vertex_format_supported(struct pipe_screen *screen,
 559                                  enum pipe_format format)
 560 {
 561    struct virgl_screen *vscreen = virgl_screen(screen);
 562    const struct util_format_description *format_desc;
 563    int i;
 564
 565    format_desc = util_format_description(format);
 566    if (!format_desc)
 567       return FALSE;
 568
 569    if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
 570       int vformat = VIRGL_FORMAT_R11G11B10_FLOAT;
 571       int big = vformat / 32;
 572       int small = vformat % 32;
 573       if (!(vscreen->caps.caps.v1.vertexbuffer.bitmask[big] & (1 << small)))
 574          return FALSE;
 575       return TRUE;
 576    }
 577
 578    /* Find the first non-VOID channel. */
 579    for (i = 0; i < 4; i++) {
 580       if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 581          break;
 582       }
 583    }
 584
 585    if (i == 4)
 586       return FALSE;
 587
 588    if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 589       return FALSE;
 590
 591    if (format_desc->channel[i].type == UTIL_FORMAT_TYPE_FIXED)
 592       return FALSE;
 593    return TRUE;
 594 }
 595
 596 /**
 597  * Query format support for creating a texture, drawing surface, etc.
 598  * \param format  the format to test
 599  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 600  */
 601 static boolean
 602 virgl_is_format_supported( struct pipe_screen *screen,
 603                                  enum pipe_format format,
 604                                  enum pipe_texture_target target,
 605                                  unsigned sample_count,
 606                                  unsigned storage_sample_count,
 607                                  unsigned bind)
 608 {
 609    struct virgl_screen *vscreen = virgl_screen(screen);
 610    const struct util_format_description *format_desc;
 611    int i;
 612
 613    if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 614       return false;
 615
 616    assert(target == PIPE_BUFFER ||
 617           target == PIPE_TEXTURE_1D ||
 618           target == PIPE_TEXTURE_1D_ARRAY ||
 619           target == PIPE_TEXTURE_2D ||
 620           target == PIPE_TEXTURE_2D_ARRAY ||
 621           target == PIPE_TEXTURE_RECT ||
 622           target == PIPE_TEXTURE_3D ||
 623           target == PIPE_TEXTURE_CUBE ||
 624           target == PIPE_TEXTURE_CUBE_ARRAY);
 625
 626    format_desc = util_format_description(format);
 627    if (!format_desc)
 628       return FALSE;
 629
 630    if (util_format_is_intensity(format))
 631       return FALSE;
 632
 633    if (sample_count > 1) {
 634       if (!vscreen->caps.caps.v1.bset.texture_multisample)
 635          return FALSE;
 636
 637       if (bind & PIPE_BIND_SHADER_IMAGE) {
 638          if (sample_count > vscreen->caps.caps.v2.max_image_samples)
 639             return FALSE;
 640       }
 641
 642       if (sample_count > vscreen->caps.caps.v1.max_samples)
 643          return FALSE;
 644    }
 645
 646    if (bind & PIPE_BIND_VERTEX_BUFFER) {
 647       return virgl_is_vertex_format_supported(screen, format);
 648    }
 649
 650    if (util_format_is_compressed(format) && target == PIPE_BUFFER)
 651       return FALSE;
 652
 653    /* Allow 3-comp 32 bit textures only for TBOs (needed for ARB_tbo_rgb32) */
 654    if ((format == PIPE_FORMAT_R32G32B32_FLOAT ||
 655        format == PIPE_FORMAT_R32G32B32_SINT ||
 656        format == PIPE_FORMAT_R32G32B32_UINT) &&
 657        target != PIPE_BUFFER)
 658       return FALSE;
 659
 660    if ((format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC ||
 661         format_desc->layout == UTIL_FORMAT_LAYOUT_ETC ||
 662         format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) &&
 663        target == PIPE_TEXTURE_3D)
 664       return FALSE;
 665
 666    if (bind & PIPE_BIND_RENDER_TARGET) {
 667       /* For ARB_framebuffer_no_attachments. */
 668       if (format == PIPE_FORMAT_NONE)
 669          return TRUE;
 670
 671       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 672          return FALSE;
 673
 674       /*
 675        * Although possible, it is unnatural to render into compressed or YUV
 676        * surfaces. So disable these here to avoid going into weird paths
 677        * inside the state trackers.
 678        */
 679       if (format_desc->block.width != 1 ||
 680           format_desc->block.height != 1)
 681          return FALSE;
 682
 683       {
 684          int big = format / 32;
 685          int small = format % 32;
 686          if (!(vscreen->caps.caps.v1.render.bitmask[big] & (1 << small)))
 687             return FALSE;
 688       }
 689    }
 690
 691    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 692       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 693          return FALSE;
 694    }
 695
 696    /*
 697     * All other operations (sampling, transfer, etc).
 698     */
 699
 700    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 701       goto out_lookup;
 702    }
 703    if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 704       goto out_lookup;
 705    }
 706    if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC) {
 707       goto out_lookup;
 708    }
 709
 710    if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
 711       goto out_lookup;
 712    } else if (format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
 713       goto out_lookup;
 714    }
 715
 716    /* Find the first non-VOID channel. */
 717    for (i = 0; i < 4; i++) {
 718       if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 719          break;
 720       }
 721    }
 722
 723    if (i == 4)
 724       return FALSE;
 725
 726    /* no L4A4 */
 727    if (format_desc->nr_channels < 4 && format_desc->channel[i].size == 4)
 728       return FALSE;
 729
 730  out_lookup:
 731    {
 732       int big = format / 32;
 733       int small = format % 32;
 734       if (!(vscreen->caps.caps.v1.sampler.bitmask[big] & (1 << small)))
 735          return FALSE;
 736    }
 737    /*
 738     * Everything else should be supported by u_format.
 739     */
 740    return TRUE;
 741 }
 742
 743 static void virgl_flush_frontbuffer(struct pipe_screen *screen,
 744                                       struct pipe_resource *res,
 745                                       unsigned level, unsigned layer,
 746                                     void *winsys_drawable_handle, struct pipe_box *sub_box)
 747 {
 748    struct virgl_screen *vscreen = virgl_screen(screen);
 749    struct virgl_winsys *vws = vscreen->vws;
 750    struct virgl_resource *vres = virgl_resource(res);
 751
 752    if (vws->flush_frontbuffer)
 753       vws->flush_frontbuffer(vws, vres->hw_res, level, layer, winsys_drawable_handle,
 754                              sub_box);
 755 }
 756
 757 static void virgl_fence_reference(struct pipe_screen *screen,
 758                                   struct pipe_fence_handle **ptr,
 759                                   struct pipe_fence_handle *fence)
 760 {
 761    struct virgl_screen *vscreen = virgl_screen(screen);
 762    struct virgl_winsys *vws = vscreen->vws;
 763
 764    vws->fence_reference(vws, ptr, fence);
 765 }
 766
 767 static boolean virgl_fence_finish(struct pipe_screen *screen,
 768                                   struct pipe_context *ctx,
 769                                   struct pipe_fence_handle *fence,
 770                                   uint64_t timeout)
 771 {
 772    struct virgl_screen *vscreen = virgl_screen(screen);
 773    struct virgl_winsys *vws = vscreen->vws;
 774
 775    return vws->fence_wait(vws, fence, timeout);
 776 }
 777
 778 static int virgl_fence_get_fd(struct pipe_screen *screen,
 779             struct pipe_fence_handle *fence)
 780 {
 781    struct virgl_screen *vscreen = virgl_screen(screen);
 782    struct virgl_winsys *vws = vscreen->vws;
 783
 784    return vws->fence_get_fd(vws, fence);
 785 }
 786
 787 static uint64_t
 788 virgl_get_timestamp(struct pipe_screen *_screen)
 789 {
 790    return os_time_get_nano();
 791 }
 792
 793 static void
 794 virgl_destroy_screen(struct pipe_screen *screen)
 795 {
 796    struct virgl_screen *vscreen = virgl_screen(screen);
 797    struct virgl_winsys *vws = vscreen->vws;
 798
 799    slab_destroy_parent(&vscreen->transfer_pool);
 800
 801    if (vws)
 802       vws->destroy(vws);
 803    FREE(vscreen);
 804 }
 805
 806 static void
 807 fixup_readback_format(union virgl_caps *caps)
 808 {
 809    const size_t size = ARRAY_SIZE(caps->v2.supported_readback_formats.bitmask);
 810    for (int i = 0; i < size; ++i) {
 811       if (caps->v2.supported_readback_formats.bitmask[i] != 0)
 812          return; /* we got some formats, we definately have a new protocol */
 813    }
 814
 815    /* old protocol used; fall back to considering all sampleable formats valid
 816     * readback-formats
 817     */
 818    for (int i = 0; i < size; ++i) {
 819       caps->v2.supported_readback_formats.bitmask[i] =
 820          caps->v1.sampler.bitmask[i];
 821    }
 822 }
 823
 824 struct pipe_screen *
 825 virgl_create_screen(struct virgl_winsys *vws, const struct pipe_screen_config *config)
 826 {
 827    struct virgl_screen *screen = CALLOC_STRUCT(virgl_screen);
 828
 829    if (!screen)
 830       return NULL;
 831
 832    virgl_debug = debug_get_option_virgl_debug();
 833
 834    screen->vws = vws;
 835    screen->base.get_name = virgl_get_name;
 836    screen->base.get_vendor = virgl_get_vendor;
 837    screen->base.get_param = virgl_get_param;
 838    screen->base.get_shader_param = virgl_get_shader_param;
 839    screen->base.get_compute_param = virgl_get_compute_param;
 840    screen->base.get_paramf = virgl_get_paramf;
 841    screen->base.is_format_supported = virgl_is_format_supported;
 842    screen->base.destroy = virgl_destroy_screen;
 843    screen->base.context_create = virgl_context_create;
 844    screen->base.flush_frontbuffer = virgl_flush_frontbuffer;
 845    screen->base.get_timestamp = virgl_get_timestamp;
 846    screen->base.fence_reference = virgl_fence_reference;
 847    //screen->base.fence_signalled = virgl_fence_signalled;
 848    screen->base.fence_finish = virgl_fence_finish;
 849    screen->base.fence_get_fd = virgl_fence_get_fd;
 850
 851    virgl_init_screen_resource_functions(&screen->base);
 852
 853    vws->get_caps(vws, &screen->caps);
 854    fixup_readback_format(&screen->caps.caps);
 855
 856    screen->refcnt = 1;
 857
 858    slab_create_parent(&screen->transfer_pool, sizeof(struct virgl_transfer), 16);
 859
 860    return &screen->base;
 861 }