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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_format.h"
  27. #include "util/u_memory.h"
  28. #include "util/u_inlines.h"
  29. #include "util/u_string.h"
  30. #include "util/u_math.h"
  31.  
  32. #include "svga_winsys.h"
  33. #include "svga_public.h"
  34. #include "svga_context.h"
  35. #include "svga_format.h"
  36. #include "svga_screen.h"
  37. #include "svga_resource_texture.h"
  38. #include "svga_resource.h"
  39. #include "svga_debug.h"
  40.  
  41. #include "svga3d_shaderdefs.h"
  42.  
  43.  
  44. #ifdef DEBUG
  45. int SVGA_DEBUG = 0;
  46.  
  47. static const struct debug_named_value svga_debug_flags[] = {
  48.    { "dma",      DEBUG_DMA, NULL },
  49.    { "tgsi",     DEBUG_TGSI, NULL },
  50.    { "pipe",     DEBUG_PIPE, NULL },
  51.    { "state",    DEBUG_STATE, NULL },
  52.    { "screen",   DEBUG_SCREEN, NULL },
  53.    { "tex",      DEBUG_TEX, NULL },
  54.    { "swtnl",    DEBUG_SWTNL, NULL },
  55.    { "const",    DEBUG_CONSTS, NULL },
  56.    { "viewport", DEBUG_VIEWPORT, NULL },
  57.    { "views",    DEBUG_VIEWS, NULL },
  58.    { "perf",     DEBUG_PERF, NULL },
  59.    { "flush",    DEBUG_FLUSH, NULL },
  60.    { "sync",     DEBUG_SYNC, NULL },
  61.    { "cache",    DEBUG_CACHE, NULL },
  62.    DEBUG_NAMED_VALUE_END
  63. };
  64. #endif
  65.  
  66. static const char *
  67. svga_get_vendor( struct pipe_screen *pscreen )
  68. {
  69.    return "VMware, Inc.";
  70. }
  71.  
  72.  
  73. static const char *
  74. svga_get_name( struct pipe_screen *pscreen )
  75. {
  76.    const char *build = "", *llvm = "", *mutex = "";
  77.    static char name[100];
  78. #ifdef DEBUG
  79.    /* Only return internal details in the DEBUG version:
  80.     */
  81.    build = "build: DEBUG;";
  82.    mutex = "mutex: " PIPE_ATOMIC ";";
  83. #ifdef HAVE_LLVM
  84.    llvm = "LLVM;";
  85. #endif
  86. #else
  87.    build = "build: RELEASE;";
  88. #endif
  89.  
  90.    util_snprintf(name, sizeof(name), "SVGA3D; %s %s %s", build, mutex, llvm);
  91.    return name;
  92. }
  93.  
  94.  
  95.  
  96.  
  97. static float
  98. svga_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
  99. {
  100.    struct svga_screen *svgascreen = svga_screen(screen);
  101.    struct svga_winsys_screen *sws = svgascreen->sws;
  102.    SVGA3dDevCapResult result;
  103.  
  104.    switch (param) {
  105.    case PIPE_CAPF_MAX_LINE_WIDTH:
  106.       return svgascreen->maxLineWidth;
  107.    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
  108.       return svgascreen->maxLineWidthAA;
  109.  
  110.    case PIPE_CAPF_MAX_POINT_WIDTH:
  111.       /* fall-through */
  112.    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
  113.       return svgascreen->maxPointSize;
  114.  
  115.    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
  116.       if(!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY, &result))
  117.          return 4.0f;
  118.       return (float) result.u;
  119.  
  120.    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
  121.       return 15.0;
  122.    case PIPE_CAPF_GUARD_BAND_LEFT:
  123.    case PIPE_CAPF_GUARD_BAND_TOP:
  124.    case PIPE_CAPF_GUARD_BAND_RIGHT:
  125.    case PIPE_CAPF_GUARD_BAND_BOTTOM:
  126.       return 0.0;
  127.    }
  128.  
  129.    debug_printf("Unexpected PIPE_CAPF_ query %u\n", param);
  130.    return 0;
  131. }
  132.  
  133.  
  134. static int
  135. svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
  136. {
  137.    struct svga_screen *svgascreen = svga_screen(screen);
  138.    struct svga_winsys_screen *sws = svgascreen->sws;
  139.    SVGA3dDevCapResult result;
  140.  
  141.    switch (param) {
  142.    case PIPE_CAP_NPOT_TEXTURES:
  143.    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  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.       return svgascreen->max_color_buffers;
  157.    case PIPE_CAP_OCCLUSION_QUERY:
  158.       return 1;
  159.    case PIPE_CAP_QUERY_TIME_ELAPSED:
  160.       return 0;
  161.    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  162.       return 1;
  163.    case PIPE_CAP_TEXTURE_SWIZZLE:
  164.       return 1;
  165.    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
  166.       return 0;
  167.    case PIPE_CAP_USER_VERTEX_BUFFERS:
  168.    case PIPE_CAP_USER_INDEX_BUFFERS:
  169.       return 0;
  170.    case PIPE_CAP_USER_CONSTANT_BUFFERS:
  171.       return 1;
  172.    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
  173.       return 16;
  174.  
  175.    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  176.       {
  177.          unsigned levels = SVGA_MAX_TEXTURE_LEVELS;
  178.          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH, &result))
  179.             levels = MIN2(util_logbase2(result.u) + 1, levels);
  180.          else
  181.             levels = 12 /* 2048x2048 */;
  182.          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT, &result))
  183.             levels = MIN2(util_logbase2(result.u) + 1, levels);
  184.          else
  185.             levels = 12 /* 2048x2048 */;
  186.          return levels;
  187.       }
  188.  
  189.    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  190.       if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VOLUME_EXTENT, &result))
  191.          return 8;  /* max 128x128x128 */
  192.       return MIN2(util_logbase2(result.u) + 1, SVGA_MAX_TEXTURE_LEVELS);
  193.  
  194.    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  195.       /*
  196.        * No mechanism to query the host, and at least limited to 2048x2048 on
  197.        * certain hardware.
  198.        */
  199.       return MIN2(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
  200.                   12 /* 2048x2048 */);
  201.  
  202.    case PIPE_CAP_BLEND_EQUATION_SEPARATE: /* req. for GL 1.5 */
  203.       return 1;
  204.  
  205.    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  206.       return 1;
  207.    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  208.       return 0;
  209.    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  210.       return 0;
  211.    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  212.       return 1;
  213.  
  214.    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
  215.       return 1; /* The color outputs of vertex shaders are not clamped */
  216.    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
  217.       return 0; /* The driver can't clamp vertex colors */
  218.    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
  219.       return 0; /* The driver can't clamp fragment colors */
  220.  
  221.    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
  222.       return 1; /* expected for GL_ARB_framebuffer_object */
  223.  
  224.    case PIPE_CAP_GLSL_FEATURE_LEVEL:
  225.       return 120;
  226.  
  227.    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
  228.       return 0;
  229.  
  230.    case PIPE_CAP_SM3:
  231.       return 1;
  232.  
  233.    /* Unsupported features */
  234.    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
  235.    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  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_MIN_TEXEL_OFFSET:
  248.    case PIPE_CAP_MAX_TEXEL_OFFSET:
  249.    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
  250.    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
  251.    case PIPE_CAP_CONDITIONAL_RENDER:
  252.    case PIPE_CAP_TEXTURE_BARRIER:
  253.    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
  254.    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
  255.    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
  256.    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
  257.    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
  258.    case PIPE_CAP_MAX_VERTEX_STREAMS:
  259.    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
  260.    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
  261.    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
  262.    case PIPE_CAP_COMPUTE:
  263.    case PIPE_CAP_START_INSTANCE:
  264.    case PIPE_CAP_QUERY_TIMESTAMP:
  265.    case PIPE_CAP_TEXTURE_MULTISAMPLE:
  266.    case PIPE_CAP_CUBE_MAP_ARRAY:
  267.    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
  268.    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
  269.    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
  270.    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
  271.    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
  272.    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
  273.    case PIPE_CAP_TEXTURE_GATHER_SM5:
  274.    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
  275.    case PIPE_CAP_FAKE_SW_MSAA:
  276.    case PIPE_CAP_TEXTURE_QUERY_LOD:
  277.    case PIPE_CAP_SAMPLE_SHADING:
  278.    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
  279.    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
  280.    case PIPE_CAP_DRAW_INDIRECT:
  281.    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
  282.    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
  283.    case PIPE_CAP_SAMPLER_VIEW_TARGET:
  284.    case PIPE_CAP_CLIP_HALFZ:
  285.    case PIPE_CAP_VERTEXID_NOBASE:
  286.    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
  287.    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
  288.       return 0;
  289.    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
  290.       return 64;
  291.    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
  292.       return 1;
  293.    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
  294.       return 2048;
  295.    case PIPE_CAP_MAX_VIEWPORTS:
  296.       return 1;
  297.    case PIPE_CAP_ENDIANNESS:
  298.       return PIPE_ENDIAN_LITTLE;
  299.  
  300.    case PIPE_CAP_VENDOR_ID:
  301.       return 0x15ad; /* VMware Inc. */
  302.    case PIPE_CAP_DEVICE_ID:
  303.       return 0x0405; /* assume SVGA II */
  304.    case PIPE_CAP_ACCELERATED:
  305.       return 0; /* XXX: */
  306.    case PIPE_CAP_VIDEO_MEMORY:
  307.       /* XXX: Query the host ? */
  308.       return 1;
  309.    case PIPE_CAP_UMA:
  310.    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
  311.    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
  312.       return 0;
  313.    }
  314.  
  315.    debug_printf("Unexpected PIPE_CAP_ query %u\n", param);
  316.    return 0;
  317. }
  318.  
  319. static int svga_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
  320. {
  321.    struct svga_screen *svgascreen = svga_screen(screen);
  322.    struct svga_winsys_screen *sws = svgascreen->sws;
  323.    SVGA3dDevCapResult result;
  324.  
  325.    switch (shader)
  326.    {
  327.    case PIPE_SHADER_FRAGMENT:
  328.       switch (param)
  329.       {
  330.       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
  331.       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
  332.       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
  333.       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
  334.          return 512;
  335.       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
  336.          return SVGA3D_MAX_NESTING_LEVEL;
  337.       case PIPE_SHADER_CAP_MAX_INPUTS:
  338.          return 10;
  339.       case PIPE_SHADER_CAP_MAX_OUTPUTS:
  340.          return svgascreen->max_color_buffers;
  341.       case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
  342.          return 224 * sizeof(float[4]);
  343.       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
  344.          return 1;
  345.       case PIPE_SHADER_CAP_MAX_TEMPS:
  346.          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS, &result))
  347.             return 32;
  348.          return MIN2(result.u, SVGA3D_TEMPREG_MAX);
  349.       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
  350.          /*
  351.           * Although PS 3.0 has some addressing abilities it can only represent
  352.           * loops that can be statically determined and unrolled. Given we can
  353.           * only handle a subset of the cases that the state tracker already
  354.           * does it is better to defer loop unrolling to the state tracker.
  355.           */
  356.          return 0;
  357.       case PIPE_SHADER_CAP_MAX_PREDS:
  358.          return 1;
  359.       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
  360.          return 0;
  361.       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
  362.          return 0;
  363.       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
  364.       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
  365.       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
  366.          return 0;
  367.       case PIPE_SHADER_CAP_SUBROUTINES:
  368.          return 0;
  369.       case PIPE_SHADER_CAP_INTEGERS:
  370.          return 0;
  371.       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
  372.       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
  373.          return 16;
  374.       case PIPE_SHADER_CAP_PREFERRED_IR:
  375.          return PIPE_SHADER_IR_TGSI;
  376.       case PIPE_SHADER_CAP_DOUBLES:
  377.       case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
  378.       case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
  379.       case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
  380.          return 0;
  381.       }
  382.       /* If we get here, we failed to handle a cap above */
  383.       debug_printf("Unexpected fragment shader query %u\n", param);
  384.       return 0;
  385.    case PIPE_SHADER_VERTEX:
  386.       switch (param)
  387.       {
  388.       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
  389.       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
  390.          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS, &result))
  391.             return 512;
  392.          return result.u;
  393.       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
  394.       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
  395.          /* XXX: until we have vertex texture support */
  396.          return 0;
  397.       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
  398.          return SVGA3D_MAX_NESTING_LEVEL;
  399.       case PIPE_SHADER_CAP_MAX_INPUTS:
  400.          return 16;
  401.       case PIPE_SHADER_CAP_MAX_OUTPUTS:
  402.          return 10;
  403.       case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
  404.          return 256 * sizeof(float[4]);
  405.       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
  406.          return 1;
  407.       case PIPE_SHADER_CAP_MAX_TEMPS:
  408.          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS, &result))
  409.             return 32;
  410.          return MIN2(result.u, SVGA3D_TEMPREG_MAX);
  411.       case PIPE_SHADER_CAP_MAX_PREDS:
  412.          return 1;
  413.       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
  414.          return 0;
  415.       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
  416.          return 0;
  417.       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
  418.       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
  419.          return 1;
  420.       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
  421.          return 0;
  422.       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
  423.          return 1;
  424.       case PIPE_SHADER_CAP_SUBROUTINES:
  425.          return 0;
  426.       case PIPE_SHADER_CAP_INTEGERS:
  427.          return 0;
  428.       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
  429.       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
  430.          return 0;
  431.       case PIPE_SHADER_CAP_PREFERRED_IR:
  432.          return PIPE_SHADER_IR_TGSI;
  433.       case PIPE_SHADER_CAP_DOUBLES:
  434.       case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
  435.       case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
  436.       case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
  437.          return 0;
  438.       }
  439.       /* If we get here, we failed to handle a cap above */
  440.       debug_printf("Unexpected vertex shader query %u\n", param);
  441.       return 0;
  442.    case PIPE_SHADER_GEOMETRY:
  443.    case PIPE_SHADER_COMPUTE:
  444.       /* no support for geometry or compute shaders at this time */
  445.       return 0;
  446.    default:
  447.       debug_printf("Unexpected shader type (%u) query\n", shader);
  448.       return 0;
  449.    }
  450.    return 0;
  451. }
  452.  
  453.  
  454. /**
  455.  * Implemnt pipe_screen::is_format_supported().
  456.  * \param bindings  bitmask of PIPE_BIND_x flags
  457.  */
  458. static boolean
  459. svga_is_format_supported( struct pipe_screen *screen,
  460.                           enum pipe_format format,
  461.                           enum pipe_texture_target target,
  462.                           unsigned sample_count,
  463.                           unsigned bindings)
  464. {
  465.    struct svga_screen *ss = svga_screen(screen);
  466.    SVGA3dSurfaceFormat svga_format;
  467.    SVGA3dSurfaceFormatCaps caps;
  468.    SVGA3dSurfaceFormatCaps mask;
  469.  
  470.    assert(bindings);
  471.  
  472.    if (sample_count > 1) {
  473.       return FALSE;
  474.    }
  475.  
  476.    svga_format = svga_translate_format(ss, format, bindings);
  477.    if (svga_format == SVGA3D_FORMAT_INVALID) {
  478.       return FALSE;
  479.    }
  480.  
  481.    /*
  482.     * Override host capabilities, so that we end up with the same
  483.     * visuals for all virtual hardware implementations.
  484.     */
  485.  
  486.    if (bindings & PIPE_BIND_DISPLAY_TARGET) {
  487.       switch (svga_format) {
  488.       case SVGA3D_A8R8G8B8:
  489.       case SVGA3D_X8R8G8B8:
  490.       case SVGA3D_R5G6B5:
  491.          break;
  492.  
  493.       /* Often unsupported/problematic. This means we end up with the same
  494.        * visuals for all virtual hardware implementations.
  495.        */
  496.       case SVGA3D_A4R4G4B4:
  497.       case SVGA3D_A1R5G5B5:
  498.          return FALSE;
  499.          
  500.       default:
  501.          return FALSE;
  502.       }
  503.    }
  504.    
  505.    /*
  506.     * Query the host capabilities.
  507.     */
  508.  
  509.    svga_get_format_cap(ss, svga_format, &caps);
  510.  
  511.    mask.value = 0;
  512.    if (bindings & PIPE_BIND_RENDER_TARGET) {
  513.       mask.offscreenRenderTarget = 1;
  514.    }
  515.    if (bindings & PIPE_BIND_DEPTH_STENCIL) {
  516.       mask.zStencil = 1;
  517.    }
  518.    if (bindings & PIPE_BIND_SAMPLER_VIEW) {
  519.       mask.texture = 1;
  520.    }
  521.  
  522.    if (target == PIPE_TEXTURE_CUBE) {
  523.       mask.cubeTexture = 1;
  524.    }
  525.    if (target == PIPE_TEXTURE_3D) {
  526.       mask.volumeTexture = 1;
  527.    }
  528.  
  529.    return (caps.value & mask.value) == mask.value;
  530. }
  531.  
  532.  
  533. static void
  534. svga_fence_reference(struct pipe_screen *screen,
  535.                      struct pipe_fence_handle **ptr,
  536.                      struct pipe_fence_handle *fence)
  537. {
  538.    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
  539.    sws->fence_reference(sws, ptr, fence);
  540. }
  541.  
  542.  
  543. static boolean
  544. svga_fence_signalled(struct pipe_screen *screen,
  545.                      struct pipe_fence_handle *fence)
  546. {
  547.    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
  548.    return sws->fence_signalled(sws, fence, 0) == 0;
  549. }
  550.  
  551.  
  552. static boolean
  553. svga_fence_finish(struct pipe_screen *screen,
  554.                   struct pipe_fence_handle *fence,
  555.                   uint64_t timeout)
  556. {
  557.    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
  558.  
  559.    SVGA_DBG(DEBUG_DMA|DEBUG_PERF, "%s fence_ptr %p\n",
  560.             __FUNCTION__, fence);
  561.  
  562.    return sws->fence_finish(sws, fence, 0) == 0;
  563. }
  564.  
  565.  
  566. static int
  567. svga_get_driver_query_info(struct pipe_screen *screen,
  568.                            unsigned index,
  569.                            struct pipe_driver_query_info *info)
  570. {
  571.    static const struct pipe_driver_query_info queries[] = {
  572.       {"draw-calls", SVGA_QUERY_DRAW_CALLS, {0}},
  573.       {"fallbacks", SVGA_QUERY_FALLBACKS, {0}},
  574.       {"memory-used", SVGA_QUERY_MEMORY_USED, {0}, PIPE_DRIVER_QUERY_TYPE_BYTES}
  575.    };
  576.  
  577.    if (!info)
  578.       return Elements(queries);
  579.  
  580.    if (index >= Elements(queries))
  581.       return 0;
  582.  
  583.    *info = queries[index];
  584.    return 1;
  585. }
  586.  
  587.  
  588. static void
  589. svga_destroy_screen( struct pipe_screen *screen )
  590. {
  591.    struct svga_screen *svgascreen = svga_screen(screen);
  592.    
  593.    svga_screen_cache_cleanup(svgascreen);
  594.  
  595.    pipe_mutex_destroy(svgascreen->swc_mutex);
  596.    pipe_mutex_destroy(svgascreen->tex_mutex);
  597.  
  598.    svgascreen->sws->destroy(svgascreen->sws);
  599.    
  600.    FREE(svgascreen);
  601. }
  602.  
  603.  
  604. /**
  605.  * Create a new svga_screen object
  606.  */
  607. struct pipe_screen *
  608. svga_screen_create(struct svga_winsys_screen *sws)
  609. {
  610.    struct svga_screen *svgascreen;
  611.    struct pipe_screen *screen;
  612.    SVGA3dDevCapResult result;
  613.    boolean use_vs30, use_ps30;
  614.  
  615. #ifdef DEBUG
  616.    SVGA_DEBUG = debug_get_flags_option("SVGA_DEBUG", svga_debug_flags, 0 );
  617. #endif
  618.  
  619.    svgascreen = CALLOC_STRUCT(svga_screen);
  620.    if (!svgascreen)
  621.       goto error1;
  622.  
  623.    svgascreen->debug.force_level_surface_view =
  624.       debug_get_bool_option("SVGA_FORCE_LEVEL_SURFACE_VIEW", FALSE);
  625.    svgascreen->debug.force_surface_view =
  626.       debug_get_bool_option("SVGA_FORCE_SURFACE_VIEW", FALSE);
  627.    svgascreen->debug.force_sampler_view =
  628.       debug_get_bool_option("SVGA_FORCE_SAMPLER_VIEW", FALSE);
  629.    svgascreen->debug.no_surface_view =
  630.       debug_get_bool_option("SVGA_NO_SURFACE_VIEW", FALSE);
  631.    svgascreen->debug.no_sampler_view =
  632.       debug_get_bool_option("SVGA_NO_SAMPLER_VIEW", FALSE);
  633.  
  634.    screen = &svgascreen->screen;
  635.  
  636.    screen->destroy = svga_destroy_screen;
  637.    screen->get_name = svga_get_name;
  638.    screen->get_vendor = svga_get_vendor;
  639.    screen->get_device_vendor = svga_get_vendor; // TODO actual device vendor
  640.    screen->get_param = svga_get_param;
  641.    screen->get_shader_param = svga_get_shader_param;
  642.    screen->get_paramf = svga_get_paramf;
  643.    screen->is_format_supported = svga_is_format_supported;
  644.    screen->context_create = svga_context_create;
  645.    screen->fence_reference = svga_fence_reference;
  646.    screen->fence_signalled = svga_fence_signalled;
  647.    screen->fence_finish = svga_fence_finish;
  648.    screen->get_driver_query_info = svga_get_driver_query_info;
  649.    svgascreen->sws = sws;
  650.  
  651.    svga_init_screen_resource_functions(svgascreen);
  652.  
  653.    if (sws->get_hw_version) {
  654.       svgascreen->hw_version = sws->get_hw_version(sws);
  655.    } else {
  656.       svgascreen->hw_version = SVGA3D_HWVERSION_WS65_B1;
  657.    }
  658.  
  659.    use_ps30 =
  660.       sws->get_cap(sws, SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION, &result) &&
  661.       result.u >= SVGA3DPSVERSION_30 ? TRUE : FALSE;
  662.  
  663.    use_vs30 =
  664.       sws->get_cap(sws, SVGA3D_DEVCAP_VERTEX_SHADER_VERSION, &result) &&
  665.       result.u >= SVGA3DVSVERSION_30 ? TRUE : FALSE;
  666.  
  667.    /* we require Shader model 3.0 or later */
  668.    if (!use_ps30 || !use_vs30)
  669.       goto error2;
  670.  
  671.    /*
  672.     * The D16, D24X8, and D24S8 formats always do an implicit shadow compare
  673.     * when sampled from, where as the DF16, DF24, and D24S8_INT do not.  So
  674.     * we prefer the later when available.
  675.     *
  676.     * This mimics hardware vendors extensions for D3D depth sampling. See also
  677.     * http://aras-p.info/texts/D3D9GPUHacks.html
  678.     */
  679.  
  680.    {
  681.       boolean has_df16, has_df24, has_d24s8_int;
  682.       SVGA3dSurfaceFormatCaps caps;
  683.       SVGA3dSurfaceFormatCaps mask;
  684.       mask.value = 0;
  685.       mask.zStencil = 1;
  686.       mask.texture = 1;
  687.  
  688.       svgascreen->depth.z16 = SVGA3D_Z_D16;
  689.       svgascreen->depth.x8z24 = SVGA3D_Z_D24X8;
  690.       svgascreen->depth.s8z24 = SVGA3D_Z_D24S8;
  691.  
  692.       svga_get_format_cap(svgascreen, SVGA3D_Z_DF16, &caps);
  693.       has_df16 = (caps.value & mask.value) == mask.value;
  694.  
  695.       svga_get_format_cap(svgascreen, SVGA3D_Z_DF24, &caps);
  696.       has_df24 = (caps.value & mask.value) == mask.value;
  697.  
  698.       svga_get_format_cap(svgascreen, SVGA3D_Z_D24S8_INT, &caps);
  699.       has_d24s8_int = (caps.value & mask.value) == mask.value;
  700.  
  701.       /* XXX: We might want some other logic here.
  702.        * Like if we only have d24s8_int we should
  703.        * emulate the other formats with that.
  704.        */
  705.       if (has_df16) {
  706.          svgascreen->depth.z16 = SVGA3D_Z_DF16;
  707.       }
  708.       if (has_df24) {
  709.          svgascreen->depth.x8z24 = SVGA3D_Z_DF24;
  710.       }
  711.       if (has_d24s8_int) {
  712.          svgascreen->depth.s8z24 = SVGA3D_Z_D24S8_INT;
  713.       }
  714.    }
  715.  
  716.    /* Query device caps
  717.     */
  718.    if (!sws->get_cap(sws, SVGA3D_DEVCAP_LINE_STIPPLE, &result))
  719.       svgascreen->haveLineStipple = FALSE;
  720.    else
  721.       svgascreen->haveLineStipple = result.u;
  722.  
  723.    if (!sws->get_cap(sws, SVGA3D_DEVCAP_LINE_AA, &result))
  724.       svgascreen->haveLineSmooth = FALSE;
  725.    else
  726.       svgascreen->haveLineSmooth = result.u;
  727.  
  728.    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_LINE_WIDTH, &result))
  729.       svgascreen->maxLineWidth = 1.0F;
  730.    else
  731.       svgascreen->maxLineWidth = result.f;
  732.  
  733.    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH, &result))
  734.       svgascreen->maxLineWidthAA = 1.0F;
  735.    else
  736.       svgascreen->maxLineWidthAA = result.f;
  737.  
  738.    if (0)
  739.       debug_printf("svga: haveLineStip %u  "
  740.                    "haveLineSmooth %u  maxLineWidth %f\n",
  741.                    svgascreen->haveLineStipple, svgascreen->haveLineSmooth,
  742.                    svgascreen->maxLineWidth);
  743.  
  744.    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_POINT_SIZE, &result)) {
  745.       svgascreen->maxPointSize = 1.0F;
  746.    } else {
  747.       /* Keep this to a reasonable size to avoid failures in
  748.        * conform/pntaa.c:
  749.        */
  750.       svgascreen->maxPointSize = MIN2(result.f, 80.0f);
  751.    }
  752.  
  753.    /* The SVGA3D device always supports 4 targets at this time, regardless
  754.     * of what querying SVGA3D_DEVCAP_MAX_RENDER_TARGETS might return.
  755.     */
  756.    svgascreen->max_color_buffers = 4;
  757.  
  758.    pipe_mutex_init(svgascreen->tex_mutex);
  759.    pipe_mutex_init(svgascreen->swc_mutex);
  760.  
  761.    svga_screen_cache_init(svgascreen);
  762.  
  763.    return screen;
  764. error2:
  765.    FREE(svgascreen);
  766. error1:
  767.    return NULL;
  768. }
  769.  
  770. struct svga_winsys_screen *
  771. svga_winsys_screen(struct pipe_screen *screen)
  772. {
  773.    return svga_screen(screen)->sws;
  774. }
  775.  
  776. #ifdef DEBUG
  777. struct svga_screen *
  778. svga_screen(struct pipe_screen *screen)
  779. {
  780.    assert(screen);
  781.    assert(screen->destroy == svga_destroy_screen);
  782.    return (struct svga_screen *)screen;
  783. }
  784. #endif
  785.