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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.    }
  187.    /* should only get here on unhandled cases */
  188.    debug_printf("Unexpected PIPE_CAP %d query\n", param);
  189.    return 0;
  190. }
  191.  
  192. static int
  193. softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
  194. {
  195.    struct softpipe_screen *sp_screen = softpipe_screen(screen);
  196.    switch(shader)
  197.    {
  198.    case PIPE_SHADER_FRAGMENT:
  199.       return tgsi_exec_get_shader_param(param);
  200.    case PIPE_SHADER_VERTEX:
  201.    case PIPE_SHADER_GEOMETRY:
  202.       switch (param) {
  203.       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
  204.          if (sp_screen->use_llvm)
  205.             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
  206.             return 0;
  207.          else
  208.             return PIPE_MAX_SAMPLERS;
  209.       default:
  210.          if (sp_screen->use_llvm)
  211.             return draw_get_shader_param(shader, param);
  212.          else
  213.             return draw_get_shader_param_no_llvm(shader, param);
  214.       }
  215.    default:
  216.       return 0;
  217.    }
  218. }
  219.  
  220. static float
  221. softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
  222. {
  223.    switch (param) {
  224.    case PIPE_CAPF_MAX_LINE_WIDTH:
  225.       /* fall-through */
  226.    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
  227.       return 255.0; /* arbitrary */
  228.    case PIPE_CAPF_MAX_POINT_WIDTH:
  229.       /* fall-through */
  230.    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
  231.       return 255.0; /* arbitrary */
  232.    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
  233.       return 16.0;
  234.    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
  235.       return 16.0; /* arbitrary */
  236.    case PIPE_CAPF_GUARD_BAND_LEFT:
  237.    case PIPE_CAPF_GUARD_BAND_TOP:
  238.    case PIPE_CAPF_GUARD_BAND_RIGHT:
  239.    case PIPE_CAPF_GUARD_BAND_BOTTOM:
  240.       return 0.0;
  241.    }
  242.    /* should only get here on unhandled cases */
  243.    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
  244.    return 0.0;
  245. }
  246.  
  247. static int
  248. softpipe_get_video_param(struct pipe_screen *screen,
  249.                          enum pipe_video_profile profile,
  250.                          enum pipe_video_cap param)
  251. {
  252.    switch (param) {
  253.    case PIPE_VIDEO_CAP_SUPPORTED:
  254.        return vl_profile_supported(screen, profile);
  255.    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
  256.       return 0;
  257.    case PIPE_VIDEO_CAP_MAX_WIDTH:
  258.    case PIPE_VIDEO_CAP_MAX_HEIGHT:
  259.       return vl_video_buffer_max_size(screen);
  260.    case PIPE_VIDEO_CAP_PREFERED_FORMAT:
  261.       return PIPE_FORMAT_NV12;
  262.    case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
  263.       return false;
  264.    case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
  265.       return false;
  266.    case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
  267.       return true;
  268.    default:
  269.       return 0;
  270.    }
  271. }
  272.  
  273. /**
  274.  * Query format support for creating a texture, drawing surface, etc.
  275.  * \param format  the format to test
  276.  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
  277.  */
  278. static boolean
  279. softpipe_is_format_supported( struct pipe_screen *screen,
  280.                               enum pipe_format format,
  281.                               enum pipe_texture_target target,
  282.                               unsigned sample_count,
  283.                               unsigned bind)
  284. {
  285.    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
  286.    const struct util_format_description *format_desc;
  287.  
  288.    assert(target == PIPE_BUFFER ||
  289.           target == PIPE_TEXTURE_1D ||
  290.           target == PIPE_TEXTURE_1D_ARRAY ||
  291.           target == PIPE_TEXTURE_2D ||
  292.           target == PIPE_TEXTURE_2D_ARRAY ||
  293.           target == PIPE_TEXTURE_RECT ||
  294.           target == PIPE_TEXTURE_3D ||
  295.           target == PIPE_TEXTURE_CUBE ||
  296.           target == PIPE_TEXTURE_CUBE_ARRAY);
  297.  
  298.    format_desc = util_format_description(format);
  299.    if (!format_desc)
  300.       return FALSE;
  301.  
  302.    if (sample_count > 1)
  303.       return FALSE;
  304.  
  305.    if (bind & (PIPE_BIND_DISPLAY_TARGET |
  306.                PIPE_BIND_SCANOUT |
  307.                PIPE_BIND_SHARED)) {
  308.       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
  309.          return FALSE;
  310.    }
  311.  
  312.    if (bind & PIPE_BIND_RENDER_TARGET) {
  313.       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
  314.          return FALSE;
  315.  
  316.       /*
  317.        * Although possible, it is unnatural to render into compressed or YUV
  318.        * surfaces. So disable these here to avoid going into weird paths
  319.        * inside the state trackers.
  320.        */
  321.       if (format_desc->block.width != 1 ||
  322.           format_desc->block.height != 1)
  323.          return FALSE;
  324.    }
  325.  
  326.    if (bind & PIPE_BIND_DEPTH_STENCIL) {
  327.       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
  328.          return FALSE;
  329.    }
  330.  
  331.    /*
  332.     * All other operations (sampling, transfer, etc).
  333.     */
  334.  
  335.    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
  336.       return util_format_s3tc_enabled;
  337.    }
  338.  
  339.    /*
  340.     * Everything else should be supported by u_format.
  341.     */
  342.    return TRUE;
  343. }
  344.  
  345.  
  346. static void
  347. softpipe_destroy_screen( struct pipe_screen *screen )
  348. {
  349.    struct softpipe_screen *sp_screen = softpipe_screen(screen);
  350.    struct sw_winsys *winsys = sp_screen->winsys;
  351.  
  352.    if(winsys->destroy)
  353.       winsys->destroy(winsys);
  354.  
  355.    FREE(screen);
  356. }
  357.  
  358.  
  359. /* This is often overriden by the co-state tracker.
  360.  */
  361. static void
  362. softpipe_flush_frontbuffer(struct pipe_screen *_screen,
  363.                            struct pipe_resource *resource,
  364.                            unsigned level, unsigned layer,
  365.                            void *context_private)
  366. {
  367.    struct softpipe_screen *screen = softpipe_screen(_screen);
  368.    struct sw_winsys *winsys = screen->winsys;
  369.    struct softpipe_resource *texture = softpipe_resource(resource);
  370.  
  371.    assert(texture->dt);
  372.    if (texture->dt)
  373.       winsys->displaytarget_display(winsys, texture->dt, context_private);
  374. }
  375.  
  376. static uint64_t
  377. softpipe_get_timestamp(struct pipe_screen *_screen)
  378. {
  379.    return os_time_get_nano();
  380. }
  381.  
  382. /**
  383.  * Create a new pipe_screen object
  384.  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
  385.  */
  386. struct pipe_screen *
  387. softpipe_create_screen(struct sw_winsys *winsys)
  388. {
  389.    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
  390.  
  391.    if (!screen)
  392.       return NULL;
  393.  
  394.    screen->winsys = winsys;
  395.  
  396.    screen->base.destroy = softpipe_destroy_screen;
  397.  
  398.    screen->base.get_name = softpipe_get_name;
  399.    screen->base.get_vendor = softpipe_get_vendor;
  400.    screen->base.get_param = softpipe_get_param;
  401.    screen->base.get_shader_param = softpipe_get_shader_param;
  402.    screen->base.get_paramf = softpipe_get_paramf;
  403.    screen->base.get_video_param = softpipe_get_video_param;
  404.    screen->base.get_timestamp = softpipe_get_timestamp;
  405.    screen->base.is_format_supported = softpipe_is_format_supported;
  406.    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
  407.    screen->base.context_create = softpipe_create_context;
  408.    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
  409.  
  410.    screen->use_llvm = debug_get_option_use_llvm();
  411.  
  412.    util_format_s3tc_init();
  413.  
  414.    softpipe_init_screen_texture_funcs(&screen->base);
  415.    softpipe_init_screen_fence_funcs(&screen->base);
  416.  
  417.    return &screen->base;
  418. }
  419.