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 "util/u_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 svga_buffer *buffer = svga_buffer(svga->curr.vb[i].buffer);
  58
  59          if (!buffer->uploaded.buffer) {
  60             ret = u_upload_buffer( svga->upload_vb,
  61                                    0,
  62                                    buffer->base.size,
  63                                    &buffer->base,
  64                                    &buffer->uploaded.offset,
  65                                    &buffer->uploaded.buffer );
  66             if (ret)
  67                return ret;
  68
  69             if (0)
  70                debug_printf("%s: %d: orig buf %p upl buf %p ofs %d sz %d\n",
  71                             __FUNCTION__,
  72                             i,
  73                             buffer,
  74                             buffer->uploaded.buffer,
  75                             buffer->uploaded.offset,
  76                             buffer->base.size);
  77          }
  78
  79          pipe_buffer_reference( &svga->curr.vb[i].buffer, buffer->uploaded.buffer );
  80          svga->curr.vb[i].buffer_offset = buffer->uploaded.offset;
  81       }
  82    }
  83
  84    if (0)
  85       debug_printf("%s: DONE\n", __FUNCTION__);
  86
  87    return ret;
  88 }
  89
  90
  91 /***********************************************************************
  92  */
  93
  94
  95 static int emit_hw_vs_vdecl( struct svga_context *svga,
  96                              unsigned dirty )
  97 {
  98    const struct pipe_vertex_element *ve = svga->curr.velems->velem;
  99    SVGA3dVertexDecl decl;
 100    unsigned i;
 101
 102    assert(svga->curr.velems->count >=
 103           svga->curr.vs->base.info.file_count[TGSI_FILE_INPUT]);
 104
 105    svga_hwtnl_reset_vdecl( svga->hwtnl,
 106                            svga->curr.velems->count );
 107
 108    for (i = 0; i < svga->curr.velems->count; i++) {
 109       const struct pipe_vertex_buffer *vb = &svga->curr.vb[ve[i].vertex_buffer_index];
 110       unsigned usage, index;
 111
 112
 113       svga_generate_vdecl_semantics( i, &usage, &index );
 114
 115       /* SVGA_NEW_VELEMENT
 116        */
 117       decl.identity.type = svga->state.sw.ve_format[i];
 118       decl.identity.method = SVGA3D_DECLMETHOD_DEFAULT;
 119       decl.identity.usage = usage;
 120       decl.identity.usageIndex = index;
 121       decl.array.stride = vb->stride;
 122       decl.array.offset = (vb->buffer_offset +
 123                            ve[i].src_offset);
 124
 125       svga_hwtnl_vdecl( svga->hwtnl,
 126                         i,
 127                         &decl,
 128                         vb->buffer );
 129    }
 130
 131    return 0;
 132 }
 133
 134
 135 static int emit_hw_vdecl( struct svga_context *svga,
 136                           unsigned dirty )
 137 {
 138    int ret = 0;
 139
 140    /* SVGA_NEW_NEED_SWTNL
 141     */
 142    if (svga->state.sw.need_swtnl)
 143       return 0; /* Do not emit during swtnl */
 144
 145    /* If we get to here, we know that we're going to draw.  Upload
 146     * userbuffers now and try to combine multiple userbuffers from
 147     * multiple draw calls into a single host buffer for performance.
 148     */
 149    if (svga->curr.any_user_vertex_buffers &&
 150        SVGA_COMBINE_USERBUFFERS)
 151    {
 152       ret = upload_user_buffers( svga );
 153       if (ret)
 154          return ret;
 155
 156       svga->curr.any_user_vertex_buffers = FALSE;
 157    }
 158
 159    return emit_hw_vs_vdecl( svga, dirty );
 160 }
 161
 162
 163 struct svga_tracked_state svga_hw_vdecl =
 164 {
 165    "hw vertex decl state (hwtnl version)",
 166    ( SVGA_NEW_NEED_SWTNL |
 167      SVGA_NEW_VELEMENT |
 168      SVGA_NEW_VBUFFER |
 169      SVGA_NEW_RAST |
 170      SVGA_NEW_FS |
 171      SVGA_NEW_VS ),
 172    emit_hw_vdecl
 173 };
 174
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 179