src/gallium/drivers/svga/svga_swtnl_draw.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
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  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
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  22  * SOFTWARE.
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  24  **********************************************************/
  25
  26 #include "draw/draw_context.h"
  27 #include "draw/draw_vbuf.h"
  28 #include "util/u_inlines.h"
  29 #include "pipe/p_state.h"
  30
  31 #include "svga_context.h"
  32 #include "svga_swtnl.h"
  33 #include "svga_state.h"
  34 #include "svga_swtnl_private.h"
  35
  36
  37
  38 enum pipe_error
  39 svga_swtnl_draw_vbo(struct svga_context *svga,
  40                     const struct pipe_draw_info *info)
  41 {
  42    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
  43    struct pipe_transfer *ib_transfer = NULL;
  44    struct pipe_transfer *cb_transfer = NULL;
  45    struct draw_context *draw = svga->swtnl.draw;
  46    unsigned i;
  47    const void *map;
  48    enum pipe_error ret;
  49
  50    assert(!svga->dirty);
  51    assert(svga->state.sw.need_swtnl);
  52    assert(draw);
  53
  54    /* Make sure that the need_swtnl flag does not go away */
  55    svga->state.sw.in_swtnl_draw = TRUE;
  56
  57    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  58    if (ret) {
  59       svga_context_flush(svga, NULL);
  60       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  61       svga->swtnl.new_vbuf = TRUE;
  62       assert(ret == PIPE_OK);
  63    }
  64
  65    /*
  66     * Map vertex buffers
  67     */
  68    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  69       map = pipe_buffer_map(&svga->pipe,
  70                             svga->curr.vb[i].buffer,
  71                             PIPE_TRANSFER_READ,
  72                             &vb_transfer[i]);
  73
  74       draw_set_mapped_vertex_buffer(draw, i, map);
  75    }
  76
  77    /* TODO move this to update_swtnl_draw */
  78    draw_set_index_buffer(draw, &svga->curr.ib);
  79
  80    /* Map index buffer, if present */
  81    map = NULL;
  82    if (info->indexed && svga->curr.ib.buffer) {
  83       map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
  84                             PIPE_TRANSFER_READ,
  85                             &ib_transfer);
  86    }
  87    draw_set_mapped_index_buffer(draw, map);
  88
  89    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  90       map = pipe_buffer_map(&svga->pipe,
  91                             svga->curr.cb[PIPE_SHADER_VERTEX],
  92                             PIPE_TRANSFER_READ,
  93                             &cb_transfer);
  94       assert(map);
  95       draw_set_mapped_constant_buffer(
  96          draw, PIPE_SHADER_VERTEX, 0,
  97          map,
  98          svga->curr.cb[PIPE_SHADER_VERTEX]->width0);
  99    }
 100
 101    draw_vbo(draw, info);
 102
 103    draw_flush(svga->swtnl.draw);
 104
 105    /* Ensure the draw module didn't touch this */
 106    assert(i == svga->curr.num_vertex_buffers);
 107
 108    /*
 109     * unmap vertex/index buffers
 110     */
 111    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 112       pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
 113       draw_set_mapped_vertex_buffer(draw, i, NULL);
 114    }
 115
 116    if (ib_transfer) {
 117       pipe_buffer_unmap(&svga->pipe, ib_transfer);
 118       draw_set_mapped_index_buffer(draw, NULL);
 119    }
 120
 121    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
 122       pipe_buffer_unmap(&svga->pipe, cb_transfer);
 123    }
 124
 125    /* Now safe to remove the need_swtnl flag in any update_state call */
 126    svga->state.sw.in_swtnl_draw = FALSE;
 127    svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
 128
 129    return ret;
 130 }
 131
 132
 133
 134
 135 boolean svga_init_swtnl( struct svga_context *svga )
 136 {
 137    svga->swtnl.backend = svga_vbuf_render_create(svga);
 138    if(!svga->swtnl.backend)
 139       goto fail;
 140
 141    /*
 142     * Create drawing context and plug our rendering stage into it.
 143     */
 144    svga->swtnl.draw = draw_create(&svga->pipe);
 145    if (svga->swtnl.draw == NULL)
 146       goto fail;
 147
 148
 149    draw_set_rasterize_stage(svga->swtnl.draw,
 150                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
 151
 152    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 153
 154    draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 155    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 156    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
 157
 158    if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
 159       draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE);
 160
 161    return TRUE;
 162
 163 fail:
 164    if (svga->swtnl.backend)
 165       svga->swtnl.backend->destroy( svga->swtnl.backend );
 166
 167    if (svga->swtnl.draw)
 168       draw_destroy( svga->swtnl.draw );
 169
 170    return FALSE;
 171 }
 172
 173
 174 void svga_destroy_swtnl( struct svga_context *svga )
 175 {
 176    draw_destroy( svga->swtnl.draw );
 177 }