draw_pt_fetch_shade_pipeline.c revision c503e55d74cf84f87f82b3dab3cb4d38b201d47a 
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
37struct 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
49static 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
68static 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
125static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
126{
127   /* nothing to do */
128}
129
130static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
131{
132   FREE(middle);
133}
134
135
136struct 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}
161