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_LEVELS:
  86       if (vscreen->caps.caps.v2.max_texture_2d_size)
  87          return 1 + util_logbase2(vscreen->caps.caps.v2.max_texture_2d_size);
  88       return 15; /* 16K x 16K */
  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 1;
 148    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 149       return vscreen->caps.caps.v1.glsl_level;
 150    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 151       return MIN2(vscreen->caps.caps.v1.glsl_level, 140);
 152    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 153       return 0;
 154    case PIPE_CAP_COMPUTE:
 155       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COMPUTE_SHADER;
 156    case PIPE_CAP_USER_VERTEX_BUFFERS:
 157       return 0;
 158    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 159       return vscreen->caps.caps.v2.uniform_buffer_offset_alignment;
 160    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 161    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 162       return vscreen->caps.caps.v1.bset.streamout_pause_resume;
 163    case PIPE_CAP_START_INSTANCE:
 164       return vscreen->caps.caps.v1.bset.start_instance;
 165    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 166    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 167    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 168    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 169    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 170       return 0;
 171    case PIPE_CAP_QUERY_TIMESTAMP:
 172       return 1;
 173    case PIPE_CAP_QUERY_TIME_ELAPSED:
 174       return 0;
 175    case PIPE_CAP_TGSI_TEXCOORD:
 176       return 0;
 177    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 178       return VIRGL_MAP_BUFFER_ALIGNMENT;
 179    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 180       return vscreen->caps.caps.v1.max_tbo_size > 0;
 181    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 182       return vscreen->caps.caps.v2.texture_buffer_offset_alignment;
 183    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 184       return 0;
 185    case PIPE_CAP_CUBE_MAP_ARRAY:
 186       return vscreen->caps.caps.v1.bset.cube_map_array;
 187    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 188       return vscreen->caps.caps.v1.bset.texture_multisample;
 189    case PIPE_CAP_MAX_VIEWPORTS:
 190       return vscreen->caps.caps.v1.max_viewports;
 191    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 192       return vscreen->caps.caps.v1.max_tbo_size;
 193    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 194    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 195    case PIPE_CAP_ENDIANNESS:
 196       return 0;
 197    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 198    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 199       return 1;
 200    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 201       return 0;
 202    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 203       return vscreen->caps.caps.v2.max_geom_output_vertices;
 204    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 205       return vscreen->caps.caps.v2.max_geom_total_output_components;
 206    case PIPE_CAP_TEXTURE_QUERY_LOD:
 207       return vscreen->caps.caps.v1.bset.texture_query_lod;
 208    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 209       return vscreen->caps.caps.v1.max_texture_gather_components;
 210    case PIPE_CAP_DRAW_INDIRECT:
 211       return vscreen->caps.caps.v1.bset.has_indirect_draw;
 212    case PIPE_CAP_SAMPLE_SHADING:
 213    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 214       return vscreen->caps.caps.v1.bset.has_sample_shading;
 215    case PIPE_CAP_CULL_DISTANCE:
 216       return vscreen->caps.caps.v1.bset.has_cull;
 217    case PIPE_CAP_MAX_VERTEX_STREAMS:
 218       return vscreen->caps.caps.v1.glsl_level >= 400 ? 4 : 1;
 219    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 220       return vscreen->caps.caps.v1.bset.conditional_render_inverted;
 221    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 222       return vscreen->caps.caps.v1.bset.derivative_control;
 223    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 224       return vscreen->caps.caps.v1.bset.polygon_offset_clamp;
 225    case PIPE_CAP_QUERY_SO_OVERFLOW:
 226       return vscreen->caps.caps.v1.bset.transform_feedback_overflow_query;
 227    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 228       return vscreen->caps.caps.v2.shader_buffer_offset_alignment;
 229    case PIPE_CAP_DOUBLES:
 230       return vscreen->caps.caps.v1.bset.has_fp64;
 231    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 232       return vscreen->caps.caps.v2.max_shader_patch_varyings;
 233    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 234       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TEXTURE_VIEW;
 235    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 236       return vscreen->caps.caps.v2.max_vertex_attrib_stride;
 237    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 238       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COPY_IMAGE;
 239    case PIPE_CAP_TGSI_TXQS:
 240       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TXQS;
 241    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 242       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_FB_NO_ATTACH;
 243    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 244       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_ROBUST_BUFFER_ACCESS;
 245    case PIPE_CAP_TGSI_FS_FBFETCH:
 246       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TGSI_FBFETCH;
 247    case PIPE_CAP_TGSI_CLOCK:
 248       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_SHADER_CLOCK;
 249    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 250       return vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_TGSI_COMPONENTS;
 251    case PIPE_CAP_TEXTURE_GATHER_SM5:
 252    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 253    case PIPE_CAP_FAKE_SW_MSAA:
 254    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 255    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 256    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 257    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 258    case PIPE_CAP_CLIP_HALFZ:
 259    case PIPE_CAP_VERTEXID_NOBASE:
 260    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 261    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 262    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 263    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 264    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 265    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 266    case PIPE_CAP_SHAREABLE_SHADERS:
 267    case PIPE_CAP_CLEAR_TEXTURE:
 268    case PIPE_CAP_DRAW_PARAMETERS:
 269    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 270    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 271    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 272    case PIPE_CAP_INVALIDATE_BUFFER:
 273    case PIPE_CAP_GENERATE_MIPMAP:
 274    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 275    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 276    case PIPE_CAP_STRING_MARKER:
 277    case PIPE_CAP_QUERY_MEMORY_INFO:
 278    case PIPE_CAP_PCI_GROUP:
 279    case PIPE_CAP_PCI_BUS:
 280    case PIPE_CAP_PCI_DEVICE:
 281    case PIPE_CAP_PCI_FUNCTION:
 282    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 283    case PIPE_CAP_TGSI_VOTE:
 284    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 285    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 286    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 287    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 288    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 289    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 290    case PIPE_CAP_INT64:
 291    case PIPE_CAP_INT64_DIVMOD:
 292    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 293    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 294    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 295    case PIPE_CAP_TGSI_BALLOT:
 296    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 297    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 298    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 299    case PIPE_CAP_POST_DEPTH_COVERAGE:
 300    case PIPE_CAP_BINDLESS_TEXTURE:
 301    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 302    case PIPE_CAP_MEMOBJ:
 303    case PIPE_CAP_LOAD_CONSTBUF:
 304    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 305    case PIPE_CAP_TILE_RASTER_ORDER:
 306    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 307    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 308    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 309    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 310    case PIPE_CAP_FENCE_SIGNAL:
 311    case PIPE_CAP_CONSTBUF0_FLAGS:
 312    case PIPE_CAP_PACKED_UNIFORMS:
 313    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 314    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 315    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 316    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 317    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 318    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 319    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 320       return 0;
 321    case PIPE_CAP_MAX_GS_INVOCATIONS:
 322       return 32;
 323    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 324       return 1 << 27;
 325    case PIPE_CAP_VENDOR_ID:
 326       return 0x1af4;
 327    case PIPE_CAP_DEVICE_ID:
 328       return 0x1010;
 329    case PIPE_CAP_ACCELERATED:
 330       return 1;
 331    case PIPE_CAP_UMA:
 332    case PIPE_CAP_VIDEO_MEMORY:
 333       return 0;
 334    case PIPE_CAP_NATIVE_FENCE_FD:
 335       return 0;
 336    default:
 337       return u_pipe_screen_get_param_defaults(screen, param);
 338    }
 339 }
 340
 341 static int
 342 virgl_get_shader_param(struct pipe_screen *screen,
 343                        enum pipe_shader_type shader,
 344                        enum pipe_shader_cap param)
 345 {
 346    struct virgl_screen *vscreen = virgl_screen(screen);
 347
 348    if ((shader == PIPE_SHADER_TESS_CTRL || shader == PIPE_SHADER_TESS_EVAL) &&
 349        !vscreen->caps.caps.v1.bset.has_tessellation_shaders)
 350       return 0;
 351
 352    if (shader == PIPE_SHADER_COMPUTE &&
 353        !(vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COMPUTE_SHADER))
 354      return 0;
 355
 356    switch(shader)
 357    {
 358    case PIPE_SHADER_FRAGMENT:
 359    case PIPE_SHADER_VERTEX:
 360    case PIPE_SHADER_GEOMETRY:
 361    case PIPE_SHADER_TESS_CTRL:
 362    case PIPE_SHADER_TESS_EVAL:
 363    case PIPE_SHADER_COMPUTE:
 364       switch (param) {
 365       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 366       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 367       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 368       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 369          return INT_MAX;
 370       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 371       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 372       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 373          return 1;
 374       case PIPE_SHADER_CAP_MAX_INPUTS:
 375          if (vscreen->caps.caps.v1.glsl_level < 150)
 376             return vscreen->caps.caps.v2.max_vertex_attribs;
 377          return (shader == PIPE_SHADER_VERTEX ||
 378                  shader == PIPE_SHADER_GEOMETRY) ? vscreen->caps.caps.v2.max_vertex_attribs : 32;
 379       case PIPE_SHADER_CAP_MAX_OUTPUTS:
 380          if (shader == PIPE_SHADER_FRAGMENT)
 381             return vscreen->caps.caps.v1.max_render_targets;
 382          return vscreen->caps.caps.v2.max_vertex_outputs;
 383      // case PIPE_SHADER_CAP_MAX_CONSTS:
 384      //    return 4096;
 385       case PIPE_SHADER_CAP_MAX_TEMPS:
 386          return 256;
 387       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 388          return vscreen->caps.caps.v1.max_uniform_blocks;
 389     //  case PIPE_SHADER_CAP_MAX_ADDRS:
 390      //    return 1;
 391       case PIPE_SHADER_CAP_SUBROUTINES:
 392          return 1;
 393       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 394             return 16;
 395       case PIPE_SHADER_CAP_INTEGERS:
 396          return vscreen->caps.caps.v1.glsl_level >= 130;
 397       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 398          return 32;
 399       case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 400          return 4096 * sizeof(float[4]);
 401       case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 402          if (shader == PIPE_SHADER_FRAGMENT || shader == PIPE_SHADER_COMPUTE)
 403             return vscreen->caps.caps.v2.max_shader_buffer_frag_compute;
 404          else
 405             return vscreen->caps.caps.v2.max_shader_buffer_other_stages;
 406       case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 407          if (shader == PIPE_SHADER_FRAGMENT || shader == PIPE_SHADER_COMPUTE)
 408             return vscreen->caps.caps.v2.max_shader_image_frag_compute;
 409          else
 410             return vscreen->caps.caps.v2.max_shader_image_other_stages;
 411       case PIPE_SHADER_CAP_SUPPORTED_IRS:
 412          return (1 << PIPE_SHADER_IR_TGSI);
 413       case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 414       case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
 415       case PIPE_SHADER_CAP_INT64_ATOMICS:
 416       case PIPE_SHADER_CAP_FP16:
 417       case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
 418       case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
 419          return 0;
 420       case PIPE_SHADER_CAP_SCALAR_ISA:
 421          return 1;
 422       default:
 423          return 0;
 424       }
 425    default:
 426       return 0;
 427    }
 428 }
 429
 430 static float
 431 virgl_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 432 {
 433    struct virgl_screen *vscreen = virgl_screen(screen);
 434    switch (param) {
 435    case PIPE_CAPF_MAX_LINE_WIDTH:
 436       return vscreen->caps.caps.v2.max_aliased_line_width;
 437    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 438       return vscreen->caps.caps.v2.max_smooth_line_width;
 439    case PIPE_CAPF_MAX_POINT_WIDTH:
 440       return vscreen->caps.caps.v2.max_aliased_point_size;
 441    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 442       return vscreen->caps.caps.v2.max_smooth_point_size;
 443    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 444       return 16.0;
 445    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 446       return vscreen->caps.caps.v2.max_texture_lod_bias;
 447    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 448    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 449    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 450       return 0.0f;
 451    }
 452    /* should only get here on unhandled cases */
 453    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 454    return 0.0;
 455 }
 456
 457 static int
 458 virgl_get_compute_param(struct pipe_screen *screen,
 459                         enum pipe_shader_ir ir_type,
 460                         enum pipe_compute_cap param,
 461                         void *ret)
 462 {
 463    struct virgl_screen *vscreen = virgl_screen(screen);
 464    if (!(vscreen->caps.caps.v2.capability_bits & VIRGL_CAP_COMPUTE_SHADER))
 465       return 0;
 466    switch (param) {
 467    case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
 468       if (ret) {
 469          uint64_t *grid_size = ret;
 470          grid_size[0] = vscreen->caps.caps.v2.max_compute_grid_size[0];
 471          grid_size[1] = vscreen->caps.caps.v2.max_compute_grid_size[1];
 472          grid_size[2] = vscreen->caps.caps.v2.max_compute_grid_size[2];
 473       }
 474       return 3 * sizeof(uint64_t) ;
 475    case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
 476       if (ret) {
 477          uint64_t *block_size = ret;
 478          block_size[0] = vscreen->caps.caps.v2.max_compute_block_size[0];
 479          block_size[1] = vscreen->caps.caps.v2.max_compute_block_size[1];
 480          block_size[2] = vscreen->caps.caps.v2.max_compute_block_size[2];
 481       }
 482       return 3 * sizeof(uint64_t);
 483    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
 484       if (ret) {
 485          uint64_t *max_threads_per_block = ret;
 486          *max_threads_per_block = vscreen->caps.caps.v2.max_compute_work_group_invocations;
 487       }
 488       return sizeof(uint64_t);
 489    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
 490       if (ret) {
 491          uint64_t *max_local_size = ret;
 492          /* Value reported by the closed source driver. */
 493          *max_local_size = vscreen->caps.caps.v2.max_compute_shared_memory_size;
 494       }
 495       return sizeof(uint64_t);
 496    default:
 497       break;
 498    }
 499    return 0;
 500 }
 501
 502 static boolean
 503 virgl_is_vertex_format_supported(struct pipe_screen *screen,
 504                                  enum pipe_format format)
 505 {
 506    struct virgl_screen *vscreen = virgl_screen(screen);
 507    const struct util_format_description *format_desc;
 508    int i;
 509
 510    format_desc = util_format_description(format);
 511    if (!format_desc)
 512       return FALSE;
 513
 514    if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
 515       int vformat = VIRGL_FORMAT_R11G11B10_FLOAT;
 516       int big = vformat / 32;
 517       int small = vformat % 32;
 518       if (!(vscreen->caps.caps.v1.vertexbuffer.bitmask[big] & (1 << small)))
 519          return FALSE;
 520       return TRUE;
 521    }
 522
 523    /* Find the first non-VOID channel. */
 524    for (i = 0; i < 4; i++) {
 525       if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 526          break;
 527       }
 528    }
 529
 530    if (i == 4)
 531       return FALSE;
 532
 533    if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 534       return FALSE;
 535
 536    if (format_desc->channel[i].type == UTIL_FORMAT_TYPE_FIXED)
 537       return FALSE;
 538    return TRUE;
 539 }
 540
 541 /**
 542  * Query format support for creating a texture, drawing surface, etc.
 543  * \param format  the format to test
 544  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 545  */
 546 static boolean
 547 virgl_is_format_supported( struct pipe_screen *screen,
 548                                  enum pipe_format format,
 549                                  enum pipe_texture_target target,
 550                                  unsigned sample_count,
 551                                  unsigned storage_sample_count,
 552                                  unsigned bind)
 553 {
 554    struct virgl_screen *vscreen = virgl_screen(screen);
 555    const struct util_format_description *format_desc;
 556    int i;
 557
 558    if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 559       return false;
 560
 561    assert(target == PIPE_BUFFER ||
 562           target == PIPE_TEXTURE_1D ||
 563           target == PIPE_TEXTURE_1D_ARRAY ||
 564           target == PIPE_TEXTURE_2D ||
 565           target == PIPE_TEXTURE_2D_ARRAY ||
 566           target == PIPE_TEXTURE_RECT ||
 567           target == PIPE_TEXTURE_3D ||
 568           target == PIPE_TEXTURE_CUBE ||
 569           target == PIPE_TEXTURE_CUBE_ARRAY);
 570
 571    format_desc = util_format_description(format);
 572    if (!format_desc)
 573       return FALSE;
 574
 575    if (util_format_is_intensity(format))
 576       return FALSE;
 577
 578    if (sample_count > 1) {
 579       if (!vscreen->caps.caps.v1.bset.texture_multisample)
 580          return FALSE;
 581
 582       if (bind & PIPE_BIND_SHADER_IMAGE) {
 583          if (sample_count > vscreen->caps.caps.v2.max_image_samples)
 584             return FALSE;
 585       }
 586
 587       if (sample_count > vscreen->caps.caps.v1.max_samples)
 588          return FALSE;
 589    }
 590
 591    if (bind & PIPE_BIND_VERTEX_BUFFER) {
 592       return virgl_is_vertex_format_supported(screen, format);
 593    }
 594
 595    /* Allow 3-comp 32 bit textures only for TBOs (needed for ARB_tbo_rgb32) */
 596    if ((format == PIPE_FORMAT_R32G32B32_FLOAT ||
 597        format == PIPE_FORMAT_R32G32B32_SINT ||
 598        format == PIPE_FORMAT_R32G32B32_UINT) &&
 599        target != PIPE_BUFFER)
 600       return FALSE;
 601
 602    if (bind & PIPE_BIND_RENDER_TARGET) {
 603       /* For ARB_framebuffer_no_attachments. */
 604       if (format == PIPE_FORMAT_NONE)
 605          return TRUE;
 606
 607       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 608          return FALSE;
 609
 610       /*
 611        * Although possible, it is unnatural to render into compressed or YUV
 612        * surfaces. So disable these here to avoid going into weird paths
 613        * inside the state trackers.
 614        */
 615       if (format_desc->block.width != 1 ||
 616           format_desc->block.height != 1)
 617          return FALSE;
 618
 619       {
 620          int big = format / 32;
 621          int small = format % 32;
 622          if (!(vscreen->caps.caps.v1.render.bitmask[big] & (1 << small)))
 623             return FALSE;
 624       }
 625    }
 626
 627    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 628       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 629          return FALSE;
 630    }
 631
 632    /*
 633     * All other operations (sampling, transfer, etc).
 634     */
 635
 636    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 637       goto out_lookup;
 638    }
 639    if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 640       goto out_lookup;
 641    }
 642    if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC) {
 643       goto out_lookup;
 644    }
 645
 646    if (format == PIPE_FORMAT_R11G11B10_FLOAT) {
 647       goto out_lookup;
 648    } else if (format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
 649       goto out_lookup;
 650    }
 651
 652    /* Find the first non-VOID channel. */
 653    for (i = 0; i < 4; i++) {
 654       if (format_desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 655          break;
 656       }
 657    }
 658
 659    if (i == 4)
 660       return FALSE;
 661
 662    /* no L4A4 */
 663    if (format_desc->nr_channels < 4 && format_desc->channel[i].size == 4)
 664       return FALSE;
 665
 666  out_lookup:
 667    {
 668       int big = format / 32;
 669       int small = format % 32;
 670       if (!(vscreen->caps.caps.v1.sampler.bitmask[big] & (1 << small)))
 671          return FALSE;
 672    }
 673    /*
 674     * Everything else should be supported by u_format.
 675     */
 676    return TRUE;
 677 }
 678
 679 static void virgl_flush_frontbuffer(struct pipe_screen *screen,
 680                                       struct pipe_resource *res,
 681                                       unsigned level, unsigned layer,
 682                                     void *winsys_drawable_handle, struct pipe_box *sub_box)
 683 {
 684    struct virgl_screen *vscreen = virgl_screen(screen);
 685    struct virgl_winsys *vws = vscreen->vws;
 686    struct virgl_resource *vres = virgl_resource(res);
 687
 688    if (vws->flush_frontbuffer)
 689       vws->flush_frontbuffer(vws, vres->hw_res, level, layer, winsys_drawable_handle,
 690                              sub_box);
 691 }
 692
 693 static void virgl_fence_reference(struct pipe_screen *screen,
 694                                   struct pipe_fence_handle **ptr,
 695                                   struct pipe_fence_handle *fence)
 696 {
 697    struct virgl_screen *vscreen = virgl_screen(screen);
 698    struct virgl_winsys *vws = vscreen->vws;
 699
 700    vws->fence_reference(vws, ptr, fence);
 701 }
 702
 703 static boolean virgl_fence_finish(struct pipe_screen *screen,
 704                                   struct pipe_context *ctx,
 705                                   struct pipe_fence_handle *fence,
 706                                   uint64_t timeout)
 707 {
 708    struct virgl_screen *vscreen = virgl_screen(screen);
 709    struct virgl_winsys *vws = vscreen->vws;
 710
 711    return vws->fence_wait(vws, fence, timeout);
 712 }
 713
 714 static uint64_t
 715 virgl_get_timestamp(struct pipe_screen *_screen)
 716 {
 717    return os_time_get_nano();
 718 }
 719
 720 static void
 721 virgl_destroy_screen(struct pipe_screen *screen)
 722 {
 723    struct virgl_screen *vscreen = virgl_screen(screen);
 724    struct virgl_winsys *vws = vscreen->vws;
 725
 726    slab_destroy_parent(&vscreen->texture_transfer_pool);
 727
 728    if (vws)
 729       vws->destroy(vws);
 730    FREE(vscreen);
 731 }
 732
 733 struct pipe_screen *
 734 virgl_create_screen(struct virgl_winsys *vws)
 735 {
 736    struct virgl_screen *screen = CALLOC_STRUCT(virgl_screen);
 737
 738    if (!screen)
 739       return NULL;
 740
 741    virgl_debug = debug_get_option_virgl_debug();
 742
 743    screen->vws = vws;
 744    screen->base.get_name = virgl_get_name;
 745    screen->base.get_vendor = virgl_get_vendor;
 746    screen->base.get_param = virgl_get_param;
 747    screen->base.get_shader_param = virgl_get_shader_param;
 748    screen->base.get_compute_param = virgl_get_compute_param;
 749    screen->base.get_paramf = virgl_get_paramf;
 750    screen->base.is_format_supported = virgl_is_format_supported;
 751    screen->base.destroy = virgl_destroy_screen;
 752    screen->base.context_create = virgl_context_create;
 753    screen->base.flush_frontbuffer = virgl_flush_frontbuffer;
 754    screen->base.get_timestamp = virgl_get_timestamp;
 755    screen->base.fence_reference = virgl_fence_reference;
 756    //screen->base.fence_signalled = virgl_fence_signalled;
 757    screen->base.fence_finish = virgl_fence_finish;
 758
 759    virgl_init_screen_resource_functions(&screen->base);
 760
 761    vws->get_caps(vws, &screen->caps);
 762
 763    screen->refcnt = 1;
 764
 765    slab_create_parent(&screen->texture_transfer_pool, sizeof(struct virgl_transfer), 16);
 766
 767    return &screen->base;
 768 }