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  1. /**********************************************************
  2.  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person
  5.  * obtaining a copy of this software and associated documentation
  6.  * files (the "Software"), to deal in the Software without
  7.  * restriction, including without limitation the rights to use, copy,
  8.  * modify, merge, publish, distribute, sublicense, and/or sell copies
  9.  * of the Software, and to permit persons to whom the Software is
  10.  * furnished to do so, subject to the following conditions:
  11.  *
  12.  * The above copyright notice and this permission notice shall be
  13.  * included in all copies or substantial portions of the Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18.  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19.  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20.  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21.  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22.  * SOFTWARE.
  23.  *
  24.  **********************************************************/
  25.  
  26. #include "util/u_memory.h"
  27. #include "util/u_inlines.h"
  28. #include "util/u_string.h"
  29. #include "util/u_math.h"
  30.  
  31. #include "svga_winsys.h"
  32. #include "svga_public.h"
  33. #include "svga_context.h"
  34. #include "svga_format.h"
  35. #include "svga_screen.h"
  36. #include "svga_resource_texture.h"
  37. #include "svga_resource.h"
  38. #include "svga_debug.h"
  39.  
  40. #include "svga3d_shaderdefs.h"
  41.  
  42.  
  43. #ifdef DEBUG
  44. int SVGA_DEBUG = 0;
  45.  
  46. static const struct debug_named_value svga_debug_flags[] = {
  47.    { "dma",      DEBUG_DMA, NULL },
  48.    { "tgsi",     DEBUG_TGSI, NULL },
  49.    { "pipe",     DEBUG_PIPE, NULL },
  50.    { "state",    DEBUG_STATE, NULL },
  51.    { "screen",   DEBUG_SCREEN, NULL },
  52.    { "tex",      DEBUG_TEX, NULL },
  53.    { "swtnl",    DEBUG_SWTNL, NULL },
  54.    { "const",    DEBUG_CONSTS, NULL },
  55.    { "viewport", DEBUG_VIEWPORT, NULL },
  56.    { "views",    DEBUG_VIEWS, NULL },
  57.    { "perf",     DEBUG_PERF, NULL },
  58.    { "flush",    DEBUG_FLUSH, NULL },
  59.    { "sync",     DEBUG_SYNC, NULL },
  60.    { "cache",    DEBUG_CACHE, NULL },
  61.    DEBUG_NAMED_VALUE_END
  62. };
  63. #endif
  64.  
  65. static const char *
  66. svga_get_vendor( struct pipe_screen *pscreen )
  67. {
  68.    return "VMware, Inc.";
  69. }
  70.  
  71.  
  72. static const char *
  73. svga_get_name( struct pipe_screen *pscreen )
  74. {
  75.    const char *build = "", *llvm = "", *mutex = "";
  76.    static char name[100];
  77. #ifdef DEBUG
  78.    /* Only return internal details in the DEBUG version:
  79.     */
  80.    build = "build: DEBUG;";
  81.    mutex = "mutex: " PIPE_ATOMIC ";";
  82. #ifdef HAVE_LLVM
  83.    llvm = "LLVM;";
  84. #endif
  85. #else
  86.    build = "build: RELEASE;";
  87. #endif
  88.  
  89.    util_snprintf(name, sizeof(name), "SVGA3D; %s %s %s", build, mutex, llvm);
  90.    return name;
  91. }
  92.  
  93.  
  94.  
  95.  
  96. static float
  97. svga_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
  98. {
  99.    struct svga_screen *svgascreen = svga_screen(screen);
  100.    struct svga_winsys_screen *sws = svgascreen->sws;
  101.    SVGA3dDevCapResult result;
  102.  
  103.    switch (param) {
  104.    case PIPE_CAPF_MAX_LINE_WIDTH:
  105.       /* fall-through */
  106.    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
  107.       return 7.0;
  108.  
  109.    case PIPE_CAPF_MAX_POINT_WIDTH:
  110.       /* fall-through */
  111.    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
  112.       return svgascreen->maxPointSize;
  113.  
  114.    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
  115.       if(!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY, &result))
  116.          return 4.0f;
  117.       return (float) result.u;
  118.  
  119.    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
  120.       return 15.0;
  121.    case PIPE_CAPF_GUARD_BAND_LEFT:
  122.    case PIPE_CAPF_GUARD_BAND_TOP:
  123.    case PIPE_CAPF_GUARD_BAND_RIGHT:
  124.    case PIPE_CAPF_GUARD_BAND_BOTTOM:
  125.       return 0.0;
  126.    }
  127.  
  128.    debug_printf("Unexpected PIPE_CAPF_ query %u\n", param);
  129.    return 0;
  130. }
  131.  
  132.  
  133. static int
  134. svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
  135. {
  136.    struct svga_screen *svgascreen = svga_screen(screen);
  137.    struct svga_winsys_screen *sws = svgascreen->sws;
  138.    SVGA3dDevCapResult result;
  139.  
  140.    switch (param) {
  141.    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  142.       return 16;
  143.    case PIPE_CAP_NPOT_TEXTURES:
  144.       return 1;
  145.    case PIPE_CAP_TWO_SIDED_STENCIL:
  146.       return 1;
  147.    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  148.       return 0;
  149.    case PIPE_CAP_ANISOTROPIC_FILTER:
  150.       return 1;
  151.    case PIPE_CAP_POINT_SPRITE:
  152.       return 1;
  153.    case PIPE_CAP_TGSI_TEXCOORD:
  154.       return 0;
  155.    case PIPE_CAP_MAX_RENDER_TARGETS:
  156.       if(!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_RENDER_TARGETS, &result))
  157.          return 1;
  158.       if(!result.u)
  159.          return 1;
  160.       return MIN2(result.u, PIPE_MAX_COLOR_BUFS);
  161.    case PIPE_CAP_OCCLUSION_QUERY:
  162.       return 1;
  163.    case PIPE_CAP_QUERY_TIME_ELAPSED:
  164.       return 0;
  165.    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  166.       return 1;
  167.    case PIPE_CAP_TEXTURE_SWIZZLE:
  168.       return 1;
  169.    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
  170.       return 0;
  171.    case PIPE_CAP_USER_VERTEX_BUFFERS:
  172.    case PIPE_CAP_USER_INDEX_BUFFERS:
  173.       return 0;
  174.    case PIPE_CAP_USER_CONSTANT_BUFFERS:
  175.       return 1;
  176.    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
  177.       return 16;
  178.  
  179.    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  180.       {
  181.          unsigned levels = SVGA_MAX_TEXTURE_LEVELS;
  182.          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH, &result))
  183.             levels = MIN2(util_logbase2(result.u) + 1, levels);
  184.          else
  185.             levels = 12 /* 2048x2048 */;
  186.          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT, &result))
  187.             levels = MIN2(util_logbase2(result.u) + 1, levels);
  188.          else
  189.             levels = 12 /* 2048x2048 */;
  190.          return levels;
  191.       }
  192.  
  193.    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  194.       if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VOLUME_EXTENT, &result))
  195.          return 8;  /* max 128x128x128 */
  196.       return MIN2(util_logbase2(result.u) + 1, SVGA_MAX_TEXTURE_LEVELS);
  197.  
  198.    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  199.       /*
  200.        * No mechanism to query the host, and at least limited to 2048x2048 on
  201.        * certain hardware.
  202.        */
  203.       return MIN2(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
  204.                   12 /* 2048x2048 */);
  205.  
  206.    case PIPE_CAP_BLEND_EQUATION_SEPARATE: /* req. for GL 1.5 */
  207.       return 1;
  208.  
  209.    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  210.    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  211.       return 1;
  212.    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  213.    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  214.       return 0;
  215.  
  216.    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
  217.       return 1; /* The color outputs of vertex shaders are not clamped */
  218.    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
  219.       return 0; /* The driver can't clamp vertex colors */
  220.    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
  221.       return 0; /* The driver can't clamp fragment colors */
  222.  
  223.    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
  224.       return 1; /* expected for GL_ARB_framebuffer_object */
  225.  
  226.    case PIPE_CAP_GLSL_FEATURE_LEVEL:
  227.       return 120;
  228.  
  229.    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
  230.       return 1;
  231.  
  232.    /* Unsupported features */
  233.    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
  234.    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  235.    case PIPE_CAP_SM3:
  236.    case PIPE_CAP_SHADER_STENCIL_EXPORT:
  237.    case PIPE_CAP_DEPTH_CLIP_DISABLE:
  238.    case PIPE_CAP_SEAMLESS_CUBE_MAP:
  239.    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
  240.    case PIPE_CAP_INDEP_BLEND_ENABLE:
  241.    case PIPE_CAP_INDEP_BLEND_FUNC:
  242.    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
  243.    case PIPE_CAP_PRIMITIVE_RESTART:
  244.    case PIPE_CAP_TGSI_INSTANCEID:
  245.    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
  246.    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
  247.    case PIPE_CAP_SCALED_RESOLVE:
  248.    case PIPE_CAP_MIN_TEXEL_OFFSET:
  249.    case PIPE_CAP_MAX_TEXEL_OFFSET:
  250.    case PIPE_CAP_CONDITIONAL_RENDER:
  251.    case PIPE_CAP_TEXTURE_BARRIER:
  252.    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
  253.    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
  254.    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
  255.    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
  256.    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
  257.    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
  258.    case PIPE_CAP_COMPUTE:
  259.    case PIPE_CAP_START_INSTANCE:
  260.    case PIPE_CAP_QUERY_TIMESTAMP:
  261.    case PIPE_CAP_TEXTURE_MULTISAMPLE:
  262.    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
  263.    case PIPE_CAP_CUBE_MAP_ARRAY:
  264.    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
  265.    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
  266.    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
  267.    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
  268.       return 0;
  269.    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
  270.       return 1;
  271.    case PIPE_CAP_MAX_VIEWPORTS:
  272.       return 1;
  273.    case PIPE_CAP_ENDIANNESS:
  274.       return PIPE_ENDIAN_LITTLE;
  275.    }
  276.  
  277.    debug_printf("Unexpected PIPE_CAP_ query %u\n", param);
  278.    return 0;
  279. }
  280.  
  281. static int svga_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
  282. {
  283.    struct svga_screen *svgascreen = svga_screen(screen);
  284.    struct svga_winsys_screen *sws = svgascreen->sws;
  285.    SVGA3dDevCapResult result;
  286.  
  287.    switch (shader)
  288.    {
  289.    case PIPE_SHADER_FRAGMENT:
  290.       switch (param)
  291.       {
  292.       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
  293.       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
  294.       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
  295.       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
  296.          return 512;
  297.       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
  298.          return SVGA3D_MAX_NESTING_LEVEL;
  299.       case PIPE_SHADER_CAP_MAX_INPUTS:
  300.          return 10;
  301.       case PIPE_SHADER_CAP_MAX_CONSTS:
  302.          return 224;
  303.       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
  304.          return 1;
  305.       case PIPE_SHADER_CAP_MAX_TEMPS:
  306.          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS, &result))
  307.             return 32;
  308.          return MIN2(result.u, SVGA3D_TEMPREG_MAX);
  309.       case PIPE_SHADER_CAP_MAX_ADDRS:
  310.       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
  311.          /*
  312.           * Although PS 3.0 has some addressing abilities it can only represent
  313.           * loops that can be statically determined and unrolled. Given we can
  314.           * only handle a subset of the cases that the state tracker already
  315.           * does it is better to defer loop unrolling to the state tracker.
  316.           */
  317.          return 0;
  318.       case PIPE_SHADER_CAP_MAX_PREDS:
  319.          return 1;
  320.       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
  321.          return 1;
  322.       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
  323.          return 0;
  324.       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
  325.       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
  326.       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
  327.          return 0;
  328.       case PIPE_SHADER_CAP_SUBROUTINES:
  329.          return 0;
  330.       case PIPE_SHADER_CAP_INTEGERS:
  331.          return 0;
  332.       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
  333.          return 16;
  334.       default:
  335.          debug_printf("Unexpected vertex shader query %u\n", param);
  336.          return 0;
  337.       }
  338.       break;
  339.    case PIPE_SHADER_VERTEX:
  340.       switch (param)
  341.       {
  342.       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
  343.       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
  344.          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS, &result))
  345.             return 512;
  346.          return result.u;
  347.       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
  348.       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
  349.          /* XXX: until we have vertex texture support */
  350.          return 0;
  351.       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
  352.          return SVGA3D_MAX_NESTING_LEVEL;
  353.       case PIPE_SHADER_CAP_MAX_INPUTS:
  354.          return 16;
  355.       case PIPE_SHADER_CAP_MAX_CONSTS:
  356.          return 256;
  357.       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
  358.          return 1;
  359.       case PIPE_SHADER_CAP_MAX_TEMPS:
  360.          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS, &result))
  361.             return 32;
  362.          return MIN2(result.u, SVGA3D_TEMPREG_MAX);
  363.       case PIPE_SHADER_CAP_MAX_ADDRS:
  364.          return 1;
  365.       case PIPE_SHADER_CAP_MAX_PREDS:
  366.          return 1;
  367.       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
  368.          return 1;
  369.       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
  370.          return 0;
  371.       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
  372.       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
  373.          return 1;
  374.       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
  375.          return 0;
  376.       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
  377.          return 1;
  378.       case PIPE_SHADER_CAP_SUBROUTINES:
  379.          return 0;
  380.       case PIPE_SHADER_CAP_INTEGERS:
  381.          return 0;
  382.       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
  383.          return 0;
  384.       default:
  385.          debug_printf("Unexpected vertex shader query %u\n", param);
  386.          return 0;
  387.       }
  388.       break;
  389.    case PIPE_SHADER_GEOMETRY:
  390.       /* no support for geometry shaders at this time */
  391.       return 0;
  392.    default:
  393.       debug_printf("Unexpected shader type (%u) query\n", shader);
  394.       return 0;
  395.    }
  396.    return 0;
  397. }
  398.  
  399.  
  400. static boolean
  401. svga_is_format_supported( struct pipe_screen *screen,
  402.                           enum pipe_format format,
  403.                           enum pipe_texture_target target,
  404.                           unsigned sample_count,
  405.                           unsigned tex_usage)
  406. {
  407.    struct svga_screen *ss = svga_screen(screen);
  408.    SVGA3dSurfaceFormat svga_format;
  409.    SVGA3dSurfaceFormatCaps caps;
  410.    SVGA3dSurfaceFormatCaps mask;
  411.  
  412.    assert(tex_usage);
  413.  
  414.    if (sample_count > 1) {
  415.       return FALSE;
  416.    }
  417.  
  418.    svga_format = svga_translate_format(ss, format, tex_usage);
  419.    if (svga_format == SVGA3D_FORMAT_INVALID) {
  420.       return FALSE;
  421.    }
  422.  
  423.    /*
  424.     * Override host capabilities, so that we end up with the same
  425.     * visuals for all virtual hardware implementations.
  426.     */
  427.  
  428.    if (tex_usage & PIPE_BIND_DISPLAY_TARGET) {
  429.       switch (svga_format) {
  430.       case SVGA3D_A8R8G8B8:
  431.       case SVGA3D_X8R8G8B8:
  432.       case SVGA3D_R5G6B5:
  433.          break;
  434.  
  435.       /* Often unsupported/problematic. This means we end up with the same
  436.        * visuals for all virtual hardware implementations.
  437.        */
  438.       case SVGA3D_A4R4G4B4:
  439.       case SVGA3D_A1R5G5B5:
  440.          return FALSE;
  441.          
  442.       default:
  443.          return FALSE;
  444.       }
  445.    }
  446.    
  447.    /*
  448.     * Query the host capabilities.
  449.     */
  450.  
  451.    svga_get_format_cap(ss, svga_format, &caps);
  452.  
  453.    mask.value = 0;
  454.    if (tex_usage & PIPE_BIND_RENDER_TARGET) {
  455.       mask.offscreenRenderTarget = 1;
  456.    }
  457.    if (tex_usage & PIPE_BIND_DEPTH_STENCIL) {
  458.       mask.zStencil = 1;
  459.    }
  460.    if (tex_usage & PIPE_BIND_SAMPLER_VIEW) {
  461.       mask.texture = 1;
  462.    }
  463.  
  464.    return (caps.value & mask.value) == mask.value;
  465. }
  466.  
  467.  
  468. static void
  469. svga_fence_reference(struct pipe_screen *screen,
  470.                      struct pipe_fence_handle **ptr,
  471.                      struct pipe_fence_handle *fence)
  472. {
  473.    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
  474.    sws->fence_reference(sws, ptr, fence);
  475. }
  476.  
  477.  
  478. static boolean
  479. svga_fence_signalled(struct pipe_screen *screen,
  480.                      struct pipe_fence_handle *fence)
  481. {
  482.    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
  483.    return sws->fence_signalled(sws, fence, 0) == 0;
  484. }
  485.  
  486.  
  487. static boolean
  488. svga_fence_finish(struct pipe_screen *screen,
  489.                   struct pipe_fence_handle *fence,
  490.                   uint64_t timeout)
  491. {
  492.    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
  493.  
  494.    SVGA_DBG(DEBUG_DMA|DEBUG_PERF, "%s fence_ptr %p\n",
  495.             __FUNCTION__, fence);
  496.  
  497.    return sws->fence_finish(sws, fence, 0) == 0;
  498. }
  499.  
  500.  
  501. static int
  502. svga_get_driver_query_info(struct pipe_screen *screen,
  503.                            unsigned index,
  504.                            struct pipe_driver_query_info *info)
  505. {
  506.    static const struct pipe_driver_query_info queries[] = {
  507.       {"draw-calls", SVGA_QUERY_DRAW_CALLS, 0, FALSE},
  508.       {"fallbacks", SVGA_QUERY_FALLBACKS, 0, FALSE},
  509.       {"memory-used", SVGA_QUERY_MEMORY_USED, 0, TRUE}
  510.    };
  511.  
  512.    if (!info)
  513.       return Elements(queries);
  514.  
  515.    if (index >= Elements(queries))
  516.       return 0;
  517.  
  518.    *info = queries[index];
  519.    return 1;
  520. }
  521.  
  522.  
  523. static void
  524. svga_destroy_screen( struct pipe_screen *screen )
  525. {
  526.    struct svga_screen *svgascreen = svga_screen(screen);
  527.    
  528.    svga_screen_cache_cleanup(svgascreen);
  529.  
  530.    pipe_mutex_destroy(svgascreen->swc_mutex);
  531.    pipe_mutex_destroy(svgascreen->tex_mutex);
  532.  
  533.    svgascreen->sws->destroy(svgascreen->sws);
  534.    
  535.    FREE(svgascreen);
  536. }
  537.  
  538.  
  539. /**
  540.  * Create a new svga_screen object
  541.  */
  542. struct pipe_screen *
  543. svga_screen_create(struct svga_winsys_screen *sws)
  544. {
  545.    struct svga_screen *svgascreen;
  546.    struct pipe_screen *screen;
  547.    SVGA3dDevCapResult result;
  548.    boolean use_vs30, use_ps30;
  549.  
  550. #ifdef DEBUG
  551.    SVGA_DEBUG = debug_get_flags_option("SVGA_DEBUG", svga_debug_flags, 0 );
  552. #endif
  553.  
  554.    svgascreen = CALLOC_STRUCT(svga_screen);
  555.    if (!svgascreen)
  556.       goto error1;
  557.  
  558.    svgascreen->debug.force_level_surface_view =
  559.       debug_get_bool_option("SVGA_FORCE_LEVEL_SURFACE_VIEW", FALSE);
  560.    svgascreen->debug.force_surface_view =
  561.       debug_get_bool_option("SVGA_FORCE_SURFACE_VIEW", FALSE);
  562.    svgascreen->debug.force_sampler_view =
  563.       debug_get_bool_option("SVGA_FORCE_SAMPLER_VIEW", FALSE);
  564.    svgascreen->debug.no_surface_view =
  565.       debug_get_bool_option("SVGA_NO_SURFACE_VIEW", FALSE);
  566.    svgascreen->debug.no_sampler_view =
  567.       debug_get_bool_option("SVGA_NO_SAMPLER_VIEW", FALSE);
  568.  
  569.    screen = &svgascreen->screen;
  570.  
  571.    screen->destroy = svga_destroy_screen;
  572.    screen->get_name = svga_get_name;
  573.    screen->get_vendor = svga_get_vendor;
  574.    screen->get_param = svga_get_param;
  575.    screen->get_shader_param = svga_get_shader_param;
  576.    screen->get_paramf = svga_get_paramf;
  577.    screen->is_format_supported = svga_is_format_supported;
  578.    screen->context_create = svga_context_create;
  579.    screen->fence_reference = svga_fence_reference;
  580.    screen->fence_signalled = svga_fence_signalled;
  581.    screen->fence_finish = svga_fence_finish;
  582.    screen->get_driver_query_info = svga_get_driver_query_info;
  583.    svgascreen->sws = sws;
  584.  
  585.    svga_init_screen_resource_functions(svgascreen);
  586.  
  587.    if (sws->get_hw_version) {
  588.       svgascreen->hw_version = sws->get_hw_version(sws);
  589.    } else {
  590.       svgascreen->hw_version = SVGA3D_HWVERSION_WS65_B1;
  591.    }
  592.  
  593.    use_ps30 =
  594.       sws->get_cap(sws, SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION, &result) &&
  595.       result.u >= SVGA3DPSVERSION_30 ? TRUE : FALSE;
  596.  
  597.    use_vs30 =
  598.       sws->get_cap(sws, SVGA3D_DEVCAP_VERTEX_SHADER_VERSION, &result) &&
  599.       result.u >= SVGA3DVSVERSION_30 ? TRUE : FALSE;
  600.  
  601.    /* we require Shader model 3.0 or later */
  602.    if (!use_ps30 || !use_vs30)
  603.       goto error2;
  604.  
  605.    /*
  606.     * The D16, D24X8, and D24S8 formats always do an implicit shadow compare
  607.     * when sampled from, where as the DF16, DF24, and D24S8_INT do not.  So
  608.     * we prefer the later when available.
  609.     *
  610.     * This mimics hardware vendors extensions for D3D depth sampling. See also
  611.     * http://aras-p.info/texts/D3D9GPUHacks.html
  612.     */
  613.  
  614.    {
  615.       boolean has_df16, has_df24, has_d24s8_int;
  616.       SVGA3dSurfaceFormatCaps caps;
  617.       SVGA3dSurfaceFormatCaps mask;
  618.       mask.value = 0;
  619.       mask.zStencil = 1;
  620.       mask.texture = 1;
  621.  
  622.       svgascreen->depth.z16 = SVGA3D_Z_D16;
  623.       svgascreen->depth.x8z24 = SVGA3D_Z_D24X8;
  624.       svgascreen->depth.s8z24 = SVGA3D_Z_D24S8;
  625.  
  626.       svga_get_format_cap(svgascreen, SVGA3D_Z_DF16, &caps);
  627.       has_df16 = (caps.value & mask.value) == mask.value;
  628.  
  629.       svga_get_format_cap(svgascreen, SVGA3D_Z_DF24, &caps);
  630.       has_df24 = (caps.value & mask.value) == mask.value;
  631.  
  632.       svga_get_format_cap(svgascreen, SVGA3D_Z_D24S8_INT, &caps);
  633.       has_d24s8_int = (caps.value & mask.value) == mask.value;
  634.  
  635.       /* XXX: We might want some other logic here.
  636.        * Like if we only have d24s8_int we should
  637.        * emulate the other formats with that.
  638.        */
  639.       if (has_df16) {
  640.          svgascreen->depth.z16 = SVGA3D_Z_DF16;
  641.       }
  642.       if (has_df24) {
  643.          svgascreen->depth.x8z24 = SVGA3D_Z_DF24;
  644.       }
  645.       if (has_d24s8_int) {
  646.          svgascreen->depth.s8z24 = SVGA3D_Z_D24S8_INT;
  647.       }
  648.    }
  649.  
  650.    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_POINT_SIZE, &result)) {
  651.       svgascreen->maxPointSize = 1.0F;
  652.    } else {
  653.       /* Keep this to a reasonable size to avoid failures in
  654.        * conform/pntaa.c:
  655.        */
  656.       svgascreen->maxPointSize = MIN2(result.f, 80.0f);
  657.    }
  658.  
  659.    pipe_mutex_init(svgascreen->tex_mutex);
  660.    pipe_mutex_init(svgascreen->swc_mutex);
  661.  
  662.    svga_screen_cache_init(svgascreen);
  663.  
  664.    return screen;
  665. error2:
  666.    FREE(svgascreen);
  667. error1:
  668.    return NULL;
  669. }
  670.  
  671. struct svga_winsys_screen *
  672. svga_winsys_screen(struct pipe_screen *screen)
  673. {
  674.    return svga_screen(screen)->sws;
  675. }
  676.  
  677. #ifdef DEBUG
  678. struct svga_screen *
  679. svga_screen(struct pipe_screen *screen)
  680. {
  681.    assert(screen);
  682.    assert(screen->destroy == svga_destroy_screen);
  683.    return (struct svga_screen *)screen;
  684. }
  685. #endif
  686.