src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline.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 #include "pipe/p_util.h"
  29 #include "draw/draw_context.h"
  30 #include "draw/draw_vbuf.h"
  31 #include "draw/draw_vertex.h"
  32 #include "draw/draw_pt.h"
  33 #include "draw/draw_vs.h"
  34 #include "translate/translate.h"
  35
  36
  37 struct fetch_pipeline_middle_end {
  38    struct draw_pt_middle_end base;
  39    struct draw_context *draw;
  40
  41    struct pt_emit *emit;
  42
  43    unsigned pipeline_vertex_size;
  44    unsigned prim;
  45    unsigned opt;
  46 };
  47
  48
  49 static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
  50                                     unsigned prim,
  51                                     unsigned opt )
  52 {
  53    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
  54
  55    fpme->prim = prim;
  56    fpme->opt = opt;
  57
  58    if (!(opt & PT_PIPELINE))
  59       draw_pt_emit_prepare( fpme->emit, prim, opt );
  60
  61    //fpme->pipeline_vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
  62    fpme->pipeline_vertex_size = MAX_VERTEX_ALLOCATION;
  63 }
  64
  65
  66
  67
  68 static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
  69                                 const unsigned *fetch_elts,
  70                                 unsigned fetch_count,
  71                                 const ushort *draw_elts,
  72                                 unsigned draw_count )
  73 {
  74    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
  75    struct draw_context *draw = fpme->draw;
  76    struct draw_vertex_shader *shader = draw->vertex_shader;
  77    char *pipeline_verts;
  78    unsigned pipeline = PT_PIPELINE;
  79
  80    pipeline_verts = MALLOC(fpme->pipeline_vertex_size *
  81                            fetch_count);
  82
  83    if (!pipeline_verts) {
  84       assert(0);
  85       return;
  86    }
  87
  88
  89    /* Shade
  90     */
  91    shader->prepare(shader, draw);
  92
  93    if (shader->run(shader, draw, fetch_elts, fetch_count, pipeline_verts,
  94                    fpme->pipeline_vertex_size))
  95    {
  96       pipeline |= PT_CLIPTEST;
  97    }
  98
  99
 100    /* Do we need to run the pipeline?
 101     */
 102    if (fpme->opt & pipeline) {
 103       draw_pt_run_pipeline( fpme->draw,
 104                             fpme->prim,
 105                             pipeline_verts,
 106                             fpme->pipeline_vertex_size,
 107                             fetch_count,
 108                             draw_elts,
 109                             draw_count );
 110    } else {
 111       draw_pt_emit( fpme->emit,
 112                     pipeline_verts,
 113                     fpme->pipeline_vertex_size,
 114                     fetch_count,
 115                     draw_elts,
 116                     draw_count );
 117    }
 118
 119
 120    FREE(pipeline_verts);
 121 }
 122
 123
 124
 125 static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
 126 {
 127    /* nothing to do */
 128 }
 129
 130 static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
 131 {
 132    FREE(middle);
 133 }
 134
 135
 136 struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
 137 {
 138    struct fetch_pipeline_middle_end *fpme = CALLOC_STRUCT( fetch_pipeline_middle_end );
 139    if (!fpme)
 140       goto fail;
 141
 142    fpme->base.prepare = fetch_pipeline_prepare;
 143    fpme->base.run     = fetch_pipeline_run;
 144    fpme->base.finish  = fetch_pipeline_finish;
 145    fpme->base.destroy = fetch_pipeline_destroy;
 146
 147    fpme->draw = draw;
 148
 149    fpme->emit = draw_pt_emit_create( draw );
 150    if (!fpme->emit)
 151       goto fail;
 152
 153    return &fpme->base;
 154
 155  fail:
 156    if (fpme)
 157       fetch_pipeline_destroy( &fpme->base );
 158
 159    return NULL;
 160 }