src/gallium/drivers/svga/svga_state_vdecl.c

   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 "pipe/p_inlines.h"
  27 #include "pipe/p_defines.h"
  28 #include "util/u_math.h"
  29 #include "util/u_upload_mgr.h"
  30
  31 #include "svga_context.h"
  32 #include "svga_state.h"
  33 #include "svga_draw.h"
  34 #include "svga_tgsi.h"
  35 #include "svga_screen.h"
  36 #include "svga_screen_buffer.h"
  37
  38 #include "svga_hw_reg.h"
  39
  40
  41 static int
  42 upload_user_buffers( struct svga_context *svga )
  43 {
  44    enum pipe_error ret = PIPE_OK;
  45    int i;
  46    int nr;
  47
  48    if (0)
  49       debug_printf("%s: %d\n", __FUNCTION__, svga->curr.num_vertex_buffers);
  50
  51    nr = svga->curr.num_vertex_buffers;
  52
  53    for (i = 0; i < nr; i++)
  54    {
  55       if (svga_buffer_is_user_buffer(svga->curr.vb[i].buffer))
  56       {
  57          struct pipe_buffer *upload_buffer = NULL;
  58          unsigned offset = /*svga->curr.vb[i].buffer_offset*/ 0;
  59          unsigned size = svga->curr.vb[i].buffer->size /*- offset*/;
  60          unsigned upload_offset;
  61
  62          ret = u_upload_buffer( svga->upload_vb,
  63                                 offset,
  64                                 size,
  65                                 svga->curr.vb[i].buffer,
  66                                 &upload_offset,
  67                                 &upload_buffer );
  68          if (ret)
  69             return ret;
  70
  71          if (0)
  72             debug_printf("%s: %d: orig buf %p upl buf %p ofs %d sz %d\n",
  73                          __FUNCTION__,
  74                          i,
  75                          svga->curr.vb[i].buffer,
  76                          upload_buffer, upload_offset, size);
  77
  78          /* Make sure we release the old buffer and end up with the
  79           * correct refcount on the uploaded buffer.
  80           */
  81          pipe_buffer_reference( &svga->curr.vb[i].buffer, NULL );
  82          svga->curr.vb[i].buffer = upload_buffer;
  83          svga->curr.vb[i].buffer_offset = upload_offset;
  84       }
  85    }
  86
  87    if (0)
  88       debug_printf("%s: DONE\n", __FUNCTION__);
  89
  90    return ret;
  91 }
  92
  93
  94 /***********************************************************************
  95  */
  96
  97
  98 static int emit_hw_vs_vdecl( struct svga_context *svga,
  99                              unsigned dirty )
 100 {
 101    const struct pipe_vertex_element *ve = svga->curr.ve;
 102    SVGA3dVertexDecl decl;
 103    unsigned i;
 104
 105    assert(svga->curr.num_vertex_elements >=
 106           svga->curr.vs->base.info.file_count[TGSI_FILE_INPUT]);
 107
 108    svga_hwtnl_reset_vdecl( svga->hwtnl,
 109                            svga->curr.num_vertex_elements );
 110
 111    for (i = 0; i < svga->curr.num_vertex_elements; i++) {
 112       const struct pipe_vertex_buffer *vb = &svga->curr.vb[ve[i].vertex_buffer_index];
 113       unsigned usage, index;
 114
 115
 116       svga_generate_vdecl_semantics( i, &usage, &index );
 117
 118       /* SVGA_NEW_VELEMENT
 119        */
 120       decl.identity.type = svga->state.sw.ve_format[i];
 121       decl.identity.method = SVGA3D_DECLMETHOD_DEFAULT;
 122       decl.identity.usage = usage;
 123       decl.identity.usageIndex = index;
 124       decl.array.stride = vb->stride;
 125       decl.array.offset = (vb->buffer_offset +
 126                            ve[i].src_offset);
 127
 128       svga_hwtnl_vdecl( svga->hwtnl,
 129                         i,
 130                         &decl,
 131                         vb->buffer );
 132    }
 133
 134    return 0;
 135 }
 136
 137
 138 static int emit_hw_vdecl( struct svga_context *svga,
 139                           unsigned dirty )
 140 {
 141    int ret = 0;
 142
 143    /* SVGA_NEW_NEED_SWTNL
 144     */
 145    if (svga->state.sw.need_swtnl)
 146       return 0; /* Do not emit during swtnl */
 147
 148    /* If we get to here, we know that we're going to draw.  Upload
 149     * userbuffers now and try to combine multiple userbuffers from
 150     * multiple draw calls into a single host buffer for performance.
 151     */
 152    if (svga->curr.any_user_vertex_buffers &&
 153        SVGA_COMBINE_USERBUFFERS)
 154    {
 155       ret = upload_user_buffers( svga );
 156       if (ret)
 157          return ret;
 158
 159       svga->curr.any_user_vertex_buffers = FALSE;
 160    }
 161
 162    return emit_hw_vs_vdecl( svga, dirty );
 163 }
 164
 165
 166 struct svga_tracked_state svga_hw_vdecl =
 167 {
 168    "hw vertex decl state (hwtnl version)",
 169    ( SVGA_NEW_NEED_SWTNL |
 170      SVGA_NEW_VELEMENT |
 171      SVGA_NEW_VBUFFER |
 172      SVGA_NEW_RAST |
 173      SVGA_NEW_FS |
 174      SVGA_NEW_VS ),
 175    emit_hw_vdecl
 176 };
 177
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 182