src/gallium/auxiliary/draw/draw_pipe.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28  /*
  29   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   */
  32
  33 #include "pipe/p_util.h"
  34 #include "draw/draw_private.h"
  35 #include "draw/draw_pipe.h"
  36
  37
  38 boolean draw_pipeline_init( struct draw_context *draw )
  39 {
  40    /* create pipeline stages */
  41    draw->pipeline.wide_line  = draw_wide_line_stage( draw );
  42    draw->pipeline.wide_point = draw_wide_point_stage( draw );
  43    draw->pipeline.stipple   = draw_stipple_stage( draw );
  44    draw->pipeline.unfilled  = draw_unfilled_stage( draw );
  45    draw->pipeline.twoside   = draw_twoside_stage( draw );
  46    draw->pipeline.offset    = draw_offset_stage( draw );
  47    draw->pipeline.clip      = draw_clip_stage( draw );
  48    draw->pipeline.flatshade = draw_flatshade_stage( draw );
  49    draw->pipeline.cull      = draw_cull_stage( draw );
  50    draw->pipeline.validate  = draw_validate_stage( draw );
  51    draw->pipeline.first     = draw->pipeline.validate;
  52
  53    if (!draw->pipeline.wide_line ||
  54        !draw->pipeline.wide_point ||
  55        !draw->pipeline.stipple ||
  56        !draw->pipeline.unfilled ||
  57        !draw->pipeline.twoside ||
  58        !draw->pipeline.offset ||
  59        !draw->pipeline.clip ||
  60        !draw->pipeline.flatshade ||
  61        !draw->pipeline.cull ||
  62        !draw->pipeline.validate)
  63       return FALSE;
  64
  65    /* these defaults are oriented toward the needs of softpipe */
  66    draw->pipeline.wide_point_threshold = 1000000.0; /* infinity */
  67    draw->pipeline.wide_line_threshold = 1.0;
  68    draw->pipeline.line_stipple = TRUE;
  69    draw->pipeline.point_sprite = TRUE;
  70
  71    return TRUE;
  72 }
  73
  74
  75 void draw_pipeline_destroy( struct draw_context *draw )
  76 {
  77    if (draw->pipeline.wide_line)
  78       draw->pipeline.wide_line->destroy( draw->pipeline.wide_line );
  79    if (draw->pipeline.wide_point)
  80       draw->pipeline.wide_point->destroy( draw->pipeline.wide_point );
  81    if (draw->pipeline.stipple)
  82       draw->pipeline.stipple->destroy( draw->pipeline.stipple );
  83    if (draw->pipeline.unfilled)
  84       draw->pipeline.unfilled->destroy( draw->pipeline.unfilled );
  85    if (draw->pipeline.twoside)
  86       draw->pipeline.twoside->destroy( draw->pipeline.twoside );
  87    if (draw->pipeline.offset)
  88       draw->pipeline.offset->destroy( draw->pipeline.offset );
  89    if (draw->pipeline.clip)
  90       draw->pipeline.clip->destroy( draw->pipeline.clip );
  91    if (draw->pipeline.flatshade)
  92       draw->pipeline.flatshade->destroy( draw->pipeline.flatshade );
  93    if (draw->pipeline.cull)
  94       draw->pipeline.cull->destroy( draw->pipeline.cull );
  95    if (draw->pipeline.validate)
  96       draw->pipeline.validate->destroy( draw->pipeline.validate );
  97    if (draw->pipeline.aaline)
  98       draw->pipeline.aaline->destroy( draw->pipeline.aaline );
  99    if (draw->pipeline.aapoint)
 100       draw->pipeline.aapoint->destroy( draw->pipeline.aapoint );
 101    if (draw->pipeline.pstipple)
 102       draw->pipeline.pstipple->destroy( draw->pipeline.pstipple );
 103    if (draw->pipeline.rasterize)
 104       draw->pipeline.rasterize->destroy( draw->pipeline.rasterize );
 105 }
 106
 107
 108
 109
 110 /* This is only used for temporary verts.
 111  */
 112 #define MAX_VERTEX_SIZE ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float))
 113
 114
 115 /**
 116  * Allocate space for temporary post-transform vertices, such as for clipping.
 117  */
 118 void draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr )
 119 {
 120    assert(!stage->tmp);
 121
 122    stage->nr_tmps = nr;
 123
 124    if (nr) {
 125       ubyte *store = (ubyte *) MALLOC( MAX_VERTEX_SIZE * nr );
 126       unsigned i;
 127
 128       stage->tmp = (struct vertex_header **) MALLOC( sizeof(struct vertex_header *) * nr );
 129
 130       for (i = 0; i < nr; i++)
 131          stage->tmp[i] = (struct vertex_header *)(store + i * MAX_VERTEX_SIZE);
 132    }
 133 }
 134
 135
 136 void draw_free_temp_verts( struct draw_stage *stage )
 137 {
 138    if (stage->tmp) {
 139       FREE( stage->tmp[0] );
 140       FREE( stage->tmp );
 141       stage->tmp = NULL;
 142    }
 143 }
 144
 145 void draw_reset_vertex_ids(struct draw_context *draw)
 146 {
 147    struct draw_stage *stage = draw->pipeline.first;
 148
 149    while (stage) {
 150       unsigned i;
 151
 152       for (i = 0; i < stage->nr_tmps; i++)
 153          stage->tmp[i]->vertex_id = UNDEFINED_VERTEX_ID;
 154
 155       stage = stage->next;
 156    }
 157
 158    draw_pt_reset_vertex_ids(draw);
 159 }
 160
 161