1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/* Author:
* Brian Paul
* Keith Whitwell
*/
#include "pipe/p_defines.h"
#include "pipe/p_context.h"
#include "pipe/p_winsys.h"
#include "pipe/p_util.h"
#include "pipe/draw/draw_private.h"
#include "pipe/draw/draw_context.h"
#include "pipe/draw/draw_prim.h"
/**
* Draw vertex arrays
* This is the main entrypoint into the drawing module.
* \param prim one of PIPE_PRIM_x
* \param start index of first vertex to draw
* \param count number of vertices to draw
*/
void
draw_arrays(struct draw_context *draw, unsigned prim,
unsigned start, unsigned count)
{
/* tell drawing pipeline we're beginning drawing */
draw->pipeline.first->begin( draw->pipeline.first );
draw_invalidate_vcache( draw );
draw_set_prim( draw, prim );
/* drawing done here: */
draw_prim(draw, start, count);
/* draw any left-over buffered prims */
draw_flush(draw);
/* tell drawing pipeline we're done drawing */
draw->pipeline.first->end( draw->pipeline.first );
}
static INLINE void
emit_vertex_attr(struct vertex_info *vinfo, uint vfAttr, uint format)
{
const uint n = vinfo->num_attribs;
vinfo->attr_mask |= (1 << vfAttr);
vinfo->slot_to_attrib[n] = vfAttr;
if (n >= 2) {
/* the first two slots are the vertex header & clippos */
vinfo->attrib_to_slot[vfAttr] = n - 2;
}
/*printf("Vertex slot %d = vfattrib %d\n", n, vfAttr);*/
/*vinfo->interp_mode[n] = interpMode;*/
vinfo->format[n] = format;
vinfo->num_attribs++;
}
/** XXX this is duplicated in the i915 driver... */
static void
compute_vertex_size(struct vertex_info *vinfo)
{
uint i;
vinfo->size = 0;
for (i = 0; i < vinfo->num_attribs; i++) {
switch (vinfo->format[i]) {
case FORMAT_OMIT:
break;
case FORMAT_4UB:
/* fall-through */
case FORMAT_1F:
vinfo->size += 1;
break;
case FORMAT_2F:
vinfo->size += 2;
break;
case FORMAT_3F:
vinfo->size += 3;
break;
case FORMAT_4F:
vinfo->size += 4;
break;
default:
assert(0);
}
}
}
void
draw_set_vertex_attributes( struct draw_context *draw,
const unsigned *slot_to_vf_attr,
unsigned nr_attrs )
{
struct vertex_info *vinfo = &draw->vertex_info;
unsigned i;
assert(slot_to_vf_attr[0] == VF_ATTRIB_POS);
memset(vinfo, 0, sizeof(*vinfo));
/*
* First three attribs are always the same: header, clip pos, winpos
*/
emit_vertex_attr(vinfo, VF_ATTRIB_VERTEX_HEADER, FORMAT_1F);
emit_vertex_attr(vinfo, VF_ATTRIB_CLIP_POS, FORMAT_4F);
emit_vertex_attr(vinfo, VF_ATTRIB_POS, FORMAT_4F_VIEWPORT);
/*
* Remaining attribs (color, texcoords, etc)
*/
for (i = 1; i < nr_attrs; i++) {
emit_vertex_attr(vinfo, slot_to_vf_attr[i], FORMAT_4F);
}
compute_vertex_size(vinfo);
}
|
