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
   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 "draw/draw_context.h"
  27 #include "draw/draw_vbuf.h"
  28 #include "pipe/p_inlines.h"
  29 #include "pipe/p_state.h"
  30 #include "util/u_memory.h"
  31
  32 #include "svga_context.h"
  33 #include "svga_swtnl.h"
  34 #include "svga_state.h"
  35 #include "svga_swtnl_private.h"
  36
  37
  38
  39 enum pipe_error
  40 svga_swtnl_draw_range_elements(struct svga_context *svga,
  41                                struct pipe_buffer *indexBuffer,
  42                                unsigned indexSize,
  43                                unsigned min_index,
  44                                unsigned max_index,
  45                                unsigned prim, unsigned start, unsigned count)
  46 {
  47    struct draw_context *draw = svga->swtnl.draw;
  48    unsigned i;
  49    const void *map;
  50    enum pipe_error ret;
  51
  52    assert(!svga->dirty);
  53    assert(svga->state.sw.need_swtnl);
  54    assert(draw);
  55
  56    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  57    if (ret) {
  58       svga_context_flush(svga, NULL);
  59       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  60       svga->swtnl.new_vbuf = TRUE;
  61       assert(ret == PIPE_OK);
  62    }
  63
  64    /*
  65     * Map vertex buffers
  66     */
  67    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  68       map = pipe_buffer_map(svga->pipe.screen,
  69                             svga->curr.vb[i].buffer,
  70                             PIPE_BUFFER_USAGE_CPU_READ);
  71
  72       draw_set_mapped_vertex_buffer(draw, i, map);
  73    }
  74
  75    /* Map index buffer, if present */
  76    if (indexBuffer) {
  77       map = pipe_buffer_map(svga->pipe.screen, indexBuffer,
  78                             PIPE_BUFFER_USAGE_CPU_READ);
  79
  80       draw_set_mapped_element_buffer_range(draw,
  81                                            indexSize,
  82                                            min_index,
  83                                            max_index,
  84                                            map);
  85    }
  86
  87    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  88       map = pipe_buffer_map(svga->pipe.screen,
  89                             svga->curr.cb[PIPE_SHADER_VERTEX],
  90                             PIPE_BUFFER_USAGE_CPU_READ);
  91       assert(map);
  92       draw_set_mapped_constant_buffer(
  93          draw, PIPE_SHADER_VERTEX,
  94          map,
  95          svga->curr.cb[PIPE_SHADER_VERTEX]->size);
  96    }
  97
  98    draw_arrays(svga->swtnl.draw, prim, start, count);
  99
 100    draw_flush(svga->swtnl.draw);
 101
 102    /* Ensure the draw module didn't touch this */
 103    assert(i == svga->curr.num_vertex_buffers);
 104
 105    /*
 106     * unmap vertex/index buffers
 107     */
 108    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 109       pipe_buffer_unmap(svga->pipe.screen, svga->curr.vb[i].buffer);
 110       draw_set_mapped_vertex_buffer(draw, i, NULL);
 111    }
 112
 113    if (indexBuffer) {
 114       pipe_buffer_unmap(svga->pipe.screen, indexBuffer);
 115       draw_set_mapped_element_buffer(draw, 0, NULL);
 116    }
 117
 118    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
 119       pipe_buffer_unmap(svga->pipe.screen,
 120                         svga->curr.cb[PIPE_SHADER_VERTEX]);
 121    }
 122
 123    return ret;
 124 }
 125
 126
 127
 128
 129 boolean svga_init_swtnl( struct svga_context *svga )
 130 {
 131    svga->swtnl.backend = svga_vbuf_render_create(svga);
 132    if(!svga->swtnl.backend)
 133       goto fail;
 134
 135    /*
 136     * Create drawing context and plug our rendering stage into it.
 137     */
 138    svga->swtnl.draw = draw_create();
 139    if (svga->swtnl.draw == NULL)
 140       goto fail;
 141
 142
 143    draw_set_rasterize_stage(svga->swtnl.draw,
 144                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
 145
 146    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 147
 148    draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 149    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 150    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
 151
 152    draw_set_driver_clipping(svga->swtnl.draw, debug_get_bool_option("SVGA_SWTNL_FSE", FALSE));
 153
 154    return TRUE;
 155
 156 fail:
 157    if (svga->swtnl.backend)
 158       svga->swtnl.backend->destroy( svga->swtnl.backend );
 159
 160    if (svga->swtnl.draw)
 161       draw_destroy( svga->swtnl.draw );
 162
 163    return FALSE;
 164 }
 165
 166
 167 void svga_destroy_swtnl( struct svga_context *svga )
 168 {
 169    draw_destroy( svga->swtnl.draw );
 170 }