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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28.  
  29. #include "util/u_memory.h"
  30. #include "util/u_format.h"
  31. #include "util/u_format_s3tc.h"
  32. #include "util/u_video.h"
  33. #include "os/os_time.h"
  34. #include "pipe/p_defines.h"
  35. #include "pipe/p_screen.h"
  36. #include "draw/draw_context.h"
  37. #include "vl/vl_decoder.h"
  38. #include "vl/vl_video_buffer.h"
  39.  
  40. #include "state_tracker/sw_winsys.h"
  41. #include "tgsi/tgsi_exec.h"
  42.  
  43. #include "sp_texture.h"
  44. #include "sp_screen.h"
  45. #include "sp_context.h"
  46. #include "sp_fence.h"
  47. #include "sp_public.h"
  48.  
  49. DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE)
  50.  
  51. static const char *
  52. softpipe_get_vendor(struct pipe_screen *screen)
  53. {
  54.    return "VMware, Inc.";
  55. }
  56.  
  57.  
  58. static const char *
  59. softpipe_get_name(struct pipe_screen *screen)
  60. {
  61.    return "softpipe";
  62. }
  63.  
  64.  
  65. static int
  66. softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  67. {
  68.    switch (param) {
  69.    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  70.       return 2 * PIPE_MAX_SAMPLERS;  /* VS + FS */
  71.    case PIPE_CAP_NPOT_TEXTURES:
  72.       return 1;
  73.    case PIPE_CAP_TWO_SIDED_STENCIL:
  74.       return 1;
  75.    case PIPE_CAP_SM3:
  76.       return 1;
  77.    case PIPE_CAP_ANISOTROPIC_FILTER:
  78.       return 1;
  79.    case PIPE_CAP_POINT_SPRITE:
  80.       return 1;
  81.    case PIPE_CAP_MAX_RENDER_TARGETS:
  82.       return PIPE_MAX_COLOR_BUFS;
  83.    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  84.       return 1;
  85.    case PIPE_CAP_OCCLUSION_QUERY:
  86.       return 1;
  87.    case PIPE_CAP_QUERY_TIME_ELAPSED:
  88.       return 1;
  89.    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
  90.       return 1;
  91.    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  92.       return 1;
  93.    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  94.       return 1;
  95.    case PIPE_CAP_TEXTURE_SWIZZLE:
  96.       return 1;
  97.    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
  98.       return 0;
  99.    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  100.       return SP_MAX_TEXTURE_2D_LEVELS;
  101.    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  102.       return SP_MAX_TEXTURE_3D_LEVELS;
  103.    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  104.       return SP_MAX_TEXTURE_CUBE_LEVELS;
  105.    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  106.       return 1;
  107.    case PIPE_CAP_INDEP_BLEND_ENABLE:
  108.       return 1;
  109.    case PIPE_CAP_INDEP_BLEND_FUNC:
  110.       return 1;
  111.    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  112.    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  113.    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  114.    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  115.       return 1;
  116.    case PIPE_CAP_DEPTH_CLIP_DISABLE:
  117.       return 0;
  118.    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
  119.       return PIPE_MAX_SO_BUFFERS;
  120.    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
  121.    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
  122.       return 16*4;
  123.    case PIPE_CAP_PRIMITIVE_RESTART:
  124.       return 1;
  125.    case PIPE_CAP_SHADER_STENCIL_EXPORT:
  126.       return 1;
  127.    case PIPE_CAP_TGSI_INSTANCEID:
  128.    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
  129.       return 1;
  130.    case PIPE_CAP_SEAMLESS_CUBE_MAP:
  131.    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
  132.       return 1;
  133.    case PIPE_CAP_SCALED_RESOLVE:
  134.       return 0;
  135.    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
  136.       return 256; /* for GL3 */
  137.    case PIPE_CAP_MIN_TEXEL_OFFSET:
  138.       return -8;
  139.    case PIPE_CAP_MAX_TEXEL_OFFSET:
  140.       return 7;
  141.    case PIPE_CAP_CONDITIONAL_RENDER:
  142.       return 1;
  143.    case PIPE_CAP_TEXTURE_BARRIER:
  144.       return 0;
  145.    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
  146.    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
  147.    case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
  148.       return 1;
  149.    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
  150.       return 0;
  151.    case PIPE_CAP_GLSL_FEATURE_LEVEL:
  152.       return 140;
  153.    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
  154.       return 0;
  155.    case PIPE_CAP_COMPUTE:
  156.       return 0;
  157.    case PIPE_CAP_USER_VERTEX_BUFFERS:
  158.    case PIPE_CAP_USER_INDEX_BUFFERS:
  159.    case PIPE_CAP_USER_CONSTANT_BUFFERS:
  160.    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
  161.       return 1;
  162.    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
  163.       return 16;
  164.    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
  165.    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
  166.    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
  167.    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
  168.    case PIPE_CAP_START_INSTANCE:
  169.    case PIPE_CAP_TEXTURE_MULTISAMPLE:
  170.    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
  171.       return 0;
  172.    case PIPE_CAP_QUERY_TIMESTAMP:
  173.    case PIPE_CAP_CUBE_MAP_ARRAY:
  174.       return 1;
  175.    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
  176.       return 1;
  177.    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
  178.       return 65536;
  179.    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
  180.       return 0;
  181.    case PIPE_CAP_TGSI_TEXCOORD:
  182.    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
  183.       return 0;
  184.    case PIPE_CAP_MAX_VIEWPORTS:
  185.       return 1;
  186.    case PIPE_CAP_ENDIANNESS:
  187.       return PIPE_ENDIAN_NATIVE;
  188.    }
  189.    /* should only get here on unhandled cases */
  190.    debug_printf("Unexpected PIPE_CAP %d query\n", param);
  191.    return 0;
  192. }
  193.  
  194. static int
  195. softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
  196. {
  197.    struct softpipe_screen *sp_screen = softpipe_screen(screen);
  198.    switch(shader)
  199.    {
  200.    case PIPE_SHADER_FRAGMENT:
  201.       return tgsi_exec_get_shader_param(param);
  202.    case PIPE_SHADER_VERTEX:
  203.    case PIPE_SHADER_GEOMETRY:
  204.       switch (param) {
  205.       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
  206.          if (sp_screen->use_llvm)
  207.             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
  208.             return 0;
  209.          else
  210.             return PIPE_MAX_SAMPLERS;
  211.       default:
  212.          if (sp_screen->use_llvm)
  213.             return draw_get_shader_param(shader, param);
  214.          else
  215.             return draw_get_shader_param_no_llvm(shader, param);
  216.       }
  217.    default:
  218.       return 0;
  219.    }
  220. }
  221.  
  222. static float
  223. softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
  224. {
  225.    switch (param) {
  226.    case PIPE_CAPF_MAX_LINE_WIDTH:
  227.       /* fall-through */
  228.    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
  229.       return 255.0; /* arbitrary */
  230.    case PIPE_CAPF_MAX_POINT_WIDTH:
  231.       /* fall-through */
  232.    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
  233.       return 255.0; /* arbitrary */
  234.    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
  235.       return 16.0;
  236.    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
  237.       return 16.0; /* arbitrary */
  238.    case PIPE_CAPF_GUARD_BAND_LEFT:
  239.    case PIPE_CAPF_GUARD_BAND_TOP:
  240.    case PIPE_CAPF_GUARD_BAND_RIGHT:
  241.    case PIPE_CAPF_GUARD_BAND_BOTTOM:
  242.       return 0.0;
  243.    }
  244.    /* should only get here on unhandled cases */
  245.    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
  246.    return 0.0;
  247. }
  248.  
  249. static int
  250. softpipe_get_video_param(struct pipe_screen *screen,
  251.                          enum pipe_video_profile profile,
  252.                          enum pipe_video_cap param)
  253. {
  254.    switch (param) {
  255.    case PIPE_VIDEO_CAP_SUPPORTED:
  256.        return vl_profile_supported(screen, profile);
  257.    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
  258.       return 0;
  259.    case PIPE_VIDEO_CAP_MAX_WIDTH:
  260.    case PIPE_VIDEO_CAP_MAX_HEIGHT:
  261.       return vl_video_buffer_max_size(screen);
  262.    case PIPE_VIDEO_CAP_PREFERED_FORMAT:
  263.       return PIPE_FORMAT_NV12;
  264.    case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
  265.       return false;
  266.    case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
  267.       return false;
  268.    case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
  269.       return true;
  270.    default:
  271.       return 0;
  272.    }
  273. }
  274.  
  275. /**
  276.  * Query format support for creating a texture, drawing surface, etc.
  277.  * \param format  the format to test
  278.  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
  279.  */
  280. static boolean
  281. softpipe_is_format_supported( struct pipe_screen *screen,
  282.                               enum pipe_format format,
  283.                               enum pipe_texture_target target,
  284.                               unsigned sample_count,
  285.                               unsigned bind)
  286. {
  287.    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
  288.    const struct util_format_description *format_desc;
  289.  
  290.    assert(target == PIPE_BUFFER ||
  291.           target == PIPE_TEXTURE_1D ||
  292.           target == PIPE_TEXTURE_1D_ARRAY ||
  293.           target == PIPE_TEXTURE_2D ||
  294.           target == PIPE_TEXTURE_2D_ARRAY ||
  295.           target == PIPE_TEXTURE_RECT ||
  296.           target == PIPE_TEXTURE_3D ||
  297.           target == PIPE_TEXTURE_CUBE ||
  298.           target == PIPE_TEXTURE_CUBE_ARRAY);
  299.  
  300.    format_desc = util_format_description(format);
  301.    if (!format_desc)
  302.       return FALSE;
  303.  
  304.    if (sample_count > 1)
  305.       return FALSE;
  306.  
  307.    if (bind & (PIPE_BIND_DISPLAY_TARGET |
  308.                PIPE_BIND_SCANOUT |
  309.                PIPE_BIND_SHARED)) {
  310.       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
  311.          return FALSE;
  312.    }
  313.  
  314.    if (bind & PIPE_BIND_RENDER_TARGET) {
  315.       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
  316.          return FALSE;
  317.  
  318.       /*
  319.        * Although possible, it is unnatural to render into compressed or YUV
  320.        * surfaces. So disable these here to avoid going into weird paths
  321.        * inside the state trackers.
  322.        */
  323.       if (format_desc->block.width != 1 ||
  324.           format_desc->block.height != 1)
  325.          return FALSE;
  326.    }
  327.  
  328.    if (bind & PIPE_BIND_DEPTH_STENCIL) {
  329.       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
  330.          return FALSE;
  331.    }
  332.  
  333.    /*
  334.     * All other operations (sampling, transfer, etc).
  335.     */
  336.  
  337.    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
  338.       return util_format_s3tc_enabled;
  339.    }
  340.  
  341.    /*
  342.     * Everything else should be supported by u_format.
  343.     */
  344.    return TRUE;
  345. }
  346.  
  347.  
  348. static void
  349. softpipe_destroy_screen( struct pipe_screen *screen )
  350. {
  351.    struct softpipe_screen *sp_screen = softpipe_screen(screen);
  352.    struct sw_winsys *winsys = sp_screen->winsys;
  353.  
  354.    if(winsys->destroy)
  355.       winsys->destroy(winsys);
  356.  
  357.    FREE(screen);
  358. }
  359.  
  360.  
  361. /* This is often overriden by the co-state tracker.
  362.  */
  363. static void
  364. softpipe_flush_frontbuffer(struct pipe_screen *_screen,
  365.                            struct pipe_resource *resource,
  366.                            unsigned level, unsigned layer,
  367.                            void *context_private)
  368. {
  369.    struct softpipe_screen *screen = softpipe_screen(_screen);
  370.    struct sw_winsys *winsys = screen->winsys;
  371.    struct softpipe_resource *texture = softpipe_resource(resource);
  372.  
  373.    assert(texture->dt);
  374.    if (texture->dt)
  375.       winsys->displaytarget_display(winsys, texture->dt, context_private);
  376. }
  377.  
  378. static uint64_t
  379. softpipe_get_timestamp(struct pipe_screen *_screen)
  380. {
  381.    return os_time_get_nano();
  382. }
  383.  
  384. /**
  385.  * Create a new pipe_screen object
  386.  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
  387.  */
  388. struct pipe_screen *
  389. softpipe_create_screen(struct sw_winsys *winsys)
  390. {
  391.    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
  392.  
  393.    if (!screen)
  394.       return NULL;
  395.  
  396.    screen->winsys = winsys;
  397.  
  398.    screen->base.destroy = softpipe_destroy_screen;
  399.  
  400.    screen->base.get_name = softpipe_get_name;
  401.    screen->base.get_vendor = softpipe_get_vendor;
  402.    screen->base.get_param = softpipe_get_param;
  403.    screen->base.get_shader_param = softpipe_get_shader_param;
  404.    screen->base.get_paramf = softpipe_get_paramf;
  405.    screen->base.get_video_param = softpipe_get_video_param;
  406.    screen->base.get_timestamp = softpipe_get_timestamp;
  407.    screen->base.is_format_supported = softpipe_is_format_supported;
  408.    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
  409.    screen->base.context_create = softpipe_create_context;
  410.    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
  411.  
  412.    screen->use_llvm = debug_get_option_use_llvm();
  413.  
  414.    util_format_s3tc_init();
  415.  
  416.    softpipe_init_screen_texture_funcs(&screen->base);
  417.    softpipe_init_screen_fence_funcs(&screen->base);
  418.  
  419.    return &screen->base;
  420. }
  421.