src/gallium/drivers/svga/svga_swtnl_draw.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
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   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 "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_range_elements(struct svga_context *svga,
  40                                struct pipe_buffer *indexBuffer,
  41                                unsigned indexSize,
  42                                unsigned min_index,
  43                                unsigned max_index,
  44                                unsigned prim, unsigned start, unsigned count)
  45 {
  46    struct draw_context *draw = svga->swtnl.draw;
  47    unsigned i;
  48    const void *map;
  49    enum pipe_error ret;
  50
  51    assert(!svga->dirty);
  52    assert(svga->state.sw.need_swtnl);
  53    assert(draw);
  54
  55    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  56    if (ret) {
  57       svga_context_flush(svga, NULL);
  58       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  59       svga->swtnl.new_vbuf = TRUE;
  60       assert(ret == PIPE_OK);
  61    }
  62
  63    /*
  64     * Map vertex buffers
  65     */
  66    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  67       map = pipe_buffer_map(svga->pipe.screen,
  68                             svga->curr.vb[i].buffer,
  69                             PIPE_BUFFER_USAGE_CPU_READ);
  70
  71       draw_set_mapped_vertex_buffer(draw, i, map);
  72    }
  73
  74    /* Map index buffer, if present */
  75    if (indexBuffer) {
  76       map = pipe_buffer_map(svga->pipe.screen, indexBuffer,
  77                             PIPE_BUFFER_USAGE_CPU_READ);
  78
  79       draw_set_mapped_element_buffer_range(draw,
  80                                            indexSize,
  81                                            min_index,
  82                                            max_index,
  83                                            map);
  84    }
  85
  86    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  87       map = pipe_buffer_map(svga->pipe.screen,
  88                             svga->curr.cb[PIPE_SHADER_VERTEX],
  89                             PIPE_BUFFER_USAGE_CPU_READ);
  90       assert(map);
  91       draw_set_mapped_constant_buffer(
  92          draw, PIPE_SHADER_VERTEX, 0,
  93          map,
  94          svga->curr.cb[PIPE_SHADER_VERTEX]->size);
  95    }
  96
  97    draw_arrays(svga->swtnl.draw, prim, start, count);
  98
  99    draw_flush(svga->swtnl.draw);
 100
 101    /* Ensure the draw module didn't touch this */
 102    assert(i == svga->curr.num_vertex_buffers);
 103
 104    /*
 105     * unmap vertex/index buffers
 106     */
 107    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 108       pipe_buffer_unmap(svga->pipe.screen, svga->curr.vb[i].buffer);
 109       draw_set_mapped_vertex_buffer(draw, i, NULL);
 110    }
 111
 112    if (indexBuffer) {
 113       pipe_buffer_unmap(svga->pipe.screen, indexBuffer);
 114       draw_set_mapped_element_buffer(draw, 0, NULL);
 115    }
 116
 117    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
 118       pipe_buffer_unmap(svga->pipe.screen,
 119                         svga->curr.cb[PIPE_SHADER_VERTEX]);
 120    }
 121
 122    return ret;
 123 }
 124
 125
 126
 127
 128 boolean svga_init_swtnl( struct svga_context *svga )
 129 {
 130    svga->swtnl.backend = svga_vbuf_render_create(svga);
 131    if(!svga->swtnl.backend)
 132       goto fail;
 133
 134    /*
 135     * Create drawing context and plug our rendering stage into it.
 136     */
 137    svga->swtnl.draw = draw_create();
 138    if (svga->swtnl.draw == NULL)
 139       goto fail;
 140
 141
 142    draw_set_rasterize_stage(svga->swtnl.draw,
 143                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
 144
 145    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 146
 147    draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 148    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 149    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
 150
 151    draw_set_driver_clipping(svga->swtnl.draw, debug_get_bool_option("SVGA_SWTNL_FSE", FALSE));
 152
 153    return TRUE;
 154
 155 fail:
 156    if (svga->swtnl.backend)
 157       svga->swtnl.backend->destroy( svga->swtnl.backend );
 158
 159    if (svga->swtnl.draw)
 160       draw_destroy( svga->swtnl.draw );
 161
 162    return FALSE;
 163 }
 164
 165
 166 void svga_destroy_swtnl( struct svga_context *svga )
 167 {
 168    draw_destroy( svga->swtnl.draw );
 169 }