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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/**************************************************************************
*
* Copyright 2008 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.
*
**************************************************************************/
#include "pipe/p_util.h"
#include "draw/draw_context.h"
#include "draw/draw_private.h"
#include "draw/draw_pt.h"
#define FETCH_MAX 256
#define DRAW_MAX (FETCH_MAX+8)
struct varray_frontend {
struct draw_pt_front_end base;
struct draw_context *draw;
ushort draw_elts[DRAW_MAX];
unsigned fetch_elts[FETCH_MAX];
unsigned driver_fetch_max;
unsigned fetch_max;
struct draw_pt_middle_end *middle;
unsigned input_prim;
unsigned output_prim;
};
static void varray_flush_linear(struct varray_frontend *varray,
unsigned start, unsigned count)
{
if (count) {
assert(varray->middle->run_linear);
varray->middle->run_linear(varray->middle, start, count);
}
}
static void varray_line_loop_segment(struct varray_frontend *varray,
unsigned start,
unsigned segment_start,
unsigned segment_count,
boolean end )
{
assert(segment_count+1 < varray->fetch_max);
if (segment_count >= 1) {
unsigned nr = 0, i;
for (i = 0; i < segment_count; i++)
varray->fetch_elts[nr++] = start + segment_start + i;
if (end)
varray->fetch_elts[nr++] = start;
assert(nr < FETCH_MAX);
varray->middle->run(varray->middle,
varray->fetch_elts,
nr,
varray->draw_elts, /* ie. linear */
nr);
}
}
static void varray_fan_segment(struct varray_frontend *varray,
unsigned start,
unsigned segment_start,
unsigned segment_count )
{
assert(segment_count+1 < varray->fetch_max);
if (segment_count >= 2) {
unsigned nr = 0, i;
if (segment_start != 0)
varray->fetch_elts[nr++] = start;
for (i = 0 ; i < segment_count; i++)
varray->fetch_elts[nr++] = start + segment_start + i;
assert(nr < FETCH_MAX);
varray->middle->run(varray->middle,
varray->fetch_elts,
nr,
varray->draw_elts, /* ie. linear */
nr);
}
}
#define FUNC varray_run
#include "draw_pt_varray_tmp_linear.h"
static unsigned decompose_prim[PIPE_PRIM_POLYGON + 1] = {
PIPE_PRIM_POINTS,
PIPE_PRIM_LINES,
PIPE_PRIM_LINE_STRIP, /* decomposed LINELOOP */
PIPE_PRIM_LINE_STRIP,
PIPE_PRIM_TRIANGLES,
PIPE_PRIM_TRIANGLE_STRIP,
PIPE_PRIM_TRIANGLE_FAN,
PIPE_PRIM_QUADS,
PIPE_PRIM_QUAD_STRIP,
PIPE_PRIM_POLYGON
};
static void varray_prepare(struct draw_pt_front_end *frontend,
unsigned prim,
struct draw_pt_middle_end *middle,
unsigned opt)
{
struct varray_frontend *varray = (struct varray_frontend *)frontend;
varray->base.run = varray_run;
varray->input_prim = prim;
varray->output_prim = decompose_prim[prim];
varray->middle = middle;
middle->prepare(middle, varray->output_prim, opt, &varray->driver_fetch_max );
/* check that the max is even */
assert((varray->driver_fetch_max & 1) == 0);
varray->fetch_max = MIN2(FETCH_MAX, varray->driver_fetch_max);
}
static void varray_finish(struct draw_pt_front_end *frontend)
{
struct varray_frontend *varray = (struct varray_frontend *)frontend;
varray->middle->finish(varray->middle);
varray->middle = NULL;
}
static void varray_destroy(struct draw_pt_front_end *frontend)
{
FREE(frontend);
}
struct draw_pt_front_end *draw_pt_varray(struct draw_context *draw)
{
ushort i;
struct varray_frontend *varray = CALLOC_STRUCT(varray_frontend);
if (varray == NULL)
return NULL;
varray->base.prepare = varray_prepare;
varray->base.run = NULL;
varray->base.finish = varray_finish;
varray->base.destroy = varray_destroy;
varray->draw = draw;
for (i = 0; i < DRAW_MAX; i++) {
varray->draw_elts[i] = i;
}
return &varray->base;
}
|
