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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_inlines.h"
     27 #include "pipe/p_state.h"
     28 
     29 
     30 #include "svga_context.h"
     31 #include "svga_state.h"
     32 #include "svga_debug.h"
     33 #include "svga_hw_reg.h"
     34 
     35 /***********************************************************************
     36  */
     37 
     38 
     39 /**
     40  * Given a gallium vertex element format, return the corresponding SVGA3D
     41  * format.  Return SVGA3D_DECLTYPE_MAX for unsupported gallium formats.
     42  */
     43 static INLINE SVGA3dDeclType
     44 svga_translate_vertex_format(enum pipe_format format)
     45 {
     46    switch (format) {
     47    case PIPE_FORMAT_R32_FLOAT:            return SVGA3D_DECLTYPE_FLOAT1;
     48    case PIPE_FORMAT_R32G32_FLOAT:         return SVGA3D_DECLTYPE_FLOAT2;
     49    case PIPE_FORMAT_R32G32B32_FLOAT:      return SVGA3D_DECLTYPE_FLOAT3;
     50    case PIPE_FORMAT_R32G32B32A32_FLOAT:   return SVGA3D_DECLTYPE_FLOAT4;
     51    case PIPE_FORMAT_B8G8R8A8_UNORM:       return SVGA3D_DECLTYPE_D3DCOLOR;
     52    case PIPE_FORMAT_R8G8B8A8_USCALED:     return SVGA3D_DECLTYPE_UBYTE4;
     53    case PIPE_FORMAT_R16G16_SSCALED:       return SVGA3D_DECLTYPE_SHORT2;
     54    case PIPE_FORMAT_R16G16B16A16_SSCALED: return SVGA3D_DECLTYPE_SHORT4;
     55    case PIPE_FORMAT_R8G8B8A8_UNORM:       return SVGA3D_DECLTYPE_UBYTE4N;
     56    case PIPE_FORMAT_R16G16_SNORM:         return SVGA3D_DECLTYPE_SHORT2N;
     57    case PIPE_FORMAT_R16G16B16A16_SNORM:   return SVGA3D_DECLTYPE_SHORT4N;
     58    case PIPE_FORMAT_R16G16_UNORM:         return SVGA3D_DECLTYPE_USHORT2N;
     59    case PIPE_FORMAT_R16G16B16A16_UNORM:   return SVGA3D_DECLTYPE_USHORT4N;
     60    case PIPE_FORMAT_R10G10B10X2_USCALED:  return SVGA3D_DECLTYPE_UDEC3;
     61    case PIPE_FORMAT_R10G10B10X2_SNORM:    return SVGA3D_DECLTYPE_DEC3N;
     62    case PIPE_FORMAT_R16G16_FLOAT:         return SVGA3D_DECLTYPE_FLOAT16_2;
     63    case PIPE_FORMAT_R16G16B16A16_FLOAT:   return SVGA3D_DECLTYPE_FLOAT16_4;
     64 
     65    default:
     66       /* There are many formats without hardware support.  This case
     67        * will be hit regularly, meaning we'll need swvfetch.
     68        */
     69       return SVGA3D_DECLTYPE_MAX;
     70    }
     71 }
     72 
     73 
     74 static enum pipe_error
     75 update_need_swvfetch( struct svga_context *svga,
     76                       unsigned dirty )
     77 {
     78    unsigned i;
     79    boolean need_swvfetch = FALSE;
     80 
     81    if (!svga->curr.velems) {
     82       /* No vertex elements bound. */
     83       return 0;
     84    }
     85 
     86    for (i = 0; i < svga->curr.velems->count; i++) {
     87       svga->state.sw.ve_format[i] = svga_translate_vertex_format(svga->curr.velems->velem[i].src_format);
     88       if (svga->state.sw.ve_format[i] == SVGA3D_DECLTYPE_MAX) {
     89          /* Unsupported format - use software fetch */
     90          need_swvfetch = TRUE;
     91          break;
     92       }
     93    }
     94 
     95    if (need_swvfetch != svga->state.sw.need_swvfetch) {
     96       svga->state.sw.need_swvfetch = need_swvfetch;
     97       svga->dirty |= SVGA_NEW_NEED_SWVFETCH;
     98    }
     99 
    100    return PIPE_OK;
    101 }
    102 
    103 struct svga_tracked_state svga_update_need_swvfetch =
    104 {
    105    "update need_swvfetch",
    106    ( SVGA_NEW_VELEMENT ),
    107    update_need_swvfetch
    108 };
    109 
    110 
    111 /***********************************************************************
    112  */
    113 
    114 static enum pipe_error
    115 update_need_pipeline( struct svga_context *svga,
    116                       unsigned dirty )
    117 {
    118 
    119    boolean need_pipeline = FALSE;
    120    struct svga_vertex_shader *vs = svga->curr.vs;
    121 
    122    /* SVGA_NEW_RAST, SVGA_NEW_REDUCED_PRIMITIVE
    123     */
    124    if (svga->curr.rast->need_pipeline & (1 << svga->curr.reduced_prim)) {
    125       SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline (0x%x) & prim (0x%x)\n",
    126                  __FUNCTION__,
    127                  svga->curr.rast->need_pipeline,
    128                  (1 << svga->curr.reduced_prim) );
    129       SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline tris (%s), lines (%s), points (%s)\n",
    130                  __FUNCTION__,
    131                  svga->curr.rast->need_pipeline_tris_str,
    132                  svga->curr.rast->need_pipeline_lines_str,
    133                  svga->curr.rast->need_pipeline_points_str);
    134       need_pipeline = TRUE;
    135    }
    136 
    137    /* EDGEFLAGS
    138     */
    139     if (vs && vs->base.info.writes_edgeflag) {
    140       SVGA_DBG(DEBUG_SWTNL, "%s: edgeflags\n", __FUNCTION__);
    141       need_pipeline = TRUE;
    142    }
    143 
    144    /* SVGA_NEW_FS, SVGA_NEW_RAST, SVGA_NEW_REDUCED_PRIMITIVE
    145     */
    146    if (svga->curr.reduced_prim == PIPE_PRIM_POINTS) {
    147       unsigned sprite_coord_gen = svga->curr.rast->templ.sprite_coord_enable;
    148       unsigned generic_inputs =
    149          svga->curr.fs ? svga->curr.fs->generic_inputs : 0;
    150 
    151       if (sprite_coord_gen &&
    152           (generic_inputs & ~sprite_coord_gen)) {
    153          /* The fragment shader is using some generic inputs that are
    154           * not being replaced by auto-generated point/sprite coords (and
    155           * auto sprite coord generation is turned on).
    156           * The SVGA3D interface does not support that: if we enable
    157           * SVGA3D_RS_POINTSPRITEENABLE it gets enabled for _all_
    158           * texture coordinate sets.
    159           * To solve this, we have to use the draw-module's wide/sprite
    160           * point stage.
    161           */
    162          need_pipeline = TRUE;
    163       }
    164    }
    165 
    166    if (need_pipeline != svga->state.sw.need_pipeline) {
    167       svga->state.sw.need_pipeline = need_pipeline;
    168       svga->dirty |= SVGA_NEW_NEED_PIPELINE;
    169    }
    170 
    171    /* DEBUG */
    172    if (0 && svga->state.sw.need_pipeline)
    173       debug_printf("sw.need_pipeline = %d\n", svga->state.sw.need_pipeline);
    174 
    175    return PIPE_OK;
    176 }
    177 
    178 
    179 struct svga_tracked_state svga_update_need_pipeline =
    180 {
    181    "need pipeline",
    182    (SVGA_NEW_RAST |
    183     SVGA_NEW_FS |
    184     SVGA_NEW_VS |
    185     SVGA_NEW_REDUCED_PRIMITIVE),
    186    update_need_pipeline
    187 };
    188 
    189 
    190 /***********************************************************************
    191  */
    192 
    193 static enum pipe_error
    194 update_need_swtnl( struct svga_context *svga,
    195                    unsigned dirty )
    196 {
    197    boolean need_swtnl;
    198 
    199    if (svga->debug.no_swtnl) {
    200       svga->state.sw.need_swvfetch = FALSE;
    201       svga->state.sw.need_pipeline = FALSE;
    202    }
    203 
    204    need_swtnl = (svga->state.sw.need_swvfetch ||
    205                  svga->state.sw.need_pipeline);
    206 
    207    if (svga->debug.force_swtnl) {
    208       need_swtnl = TRUE;
    209    }
    210 
    211    /*
    212     * Some state changes the draw module does makes us believe we
    213     * we don't need swtnl. This causes the vdecl code to pickup
    214     * the wrong buffers and vertex formats. Try trivial/line-wide.
    215     */
    216    if (svga->state.sw.in_swtnl_draw)
    217       need_swtnl = TRUE;
    218 
    219    if (need_swtnl != svga->state.sw.need_swtnl) {
    220       SVGA_DBG(DEBUG_SWTNL|DEBUG_PERF,
    221                "%s: need_swvfetch %s, need_pipeline %s\n",
    222                __FUNCTION__,
    223                svga->state.sw.need_swvfetch ? "true" : "false",
    224                svga->state.sw.need_pipeline ? "true" : "false");
    225 
    226       svga->state.sw.need_swtnl = need_swtnl;
    227       svga->dirty |= SVGA_NEW_NEED_SWTNL;
    228       svga->swtnl.new_vdecl = TRUE;
    229    }
    230 
    231    return PIPE_OK;
    232 }
    233 
    234 
    235 struct svga_tracked_state svga_update_need_swtnl =
    236 {
    237    "need swtnl",
    238    (SVGA_NEW_NEED_PIPELINE |
    239     SVGA_NEW_NEED_SWVFETCH),
    240    update_need_swtnl
    241 };
    242