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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/**************************************************************************
*
* Copyright 2007-2009 VMware, Inc.
* 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 VMWARE 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.
*
**************************************************************************/
/*
* Rasterization for binned triangles within a tile
*/
#include <limits.h>
#include "util/u_math.h"
#include "lp_debug.h"
#include "lp_perf.h"
#include "lp_rast_priv.h"
#include "lp_tile_soa.h"
/**
* Shade all pixels in a 4x4 block.
*/
static void
block_full_4(struct lp_rasterizer_task *task,
const struct lp_rast_triangle *tri,
int x, int y)
{
lp_rast_shade_quads_all(task, &tri->inputs, x, y);
}
/**
* Shade all pixels in a 16x16 block.
*/
static void
block_full_16(struct lp_rasterizer_task *task,
const struct lp_rast_triangle *tri,
int x, int y)
{
unsigned ix, iy;
assert(x % 16 == 0);
assert(y % 16 == 0);
for (iy = 0; iy < 16; iy += 4)
for (ix = 0; ix < 16; ix += 4)
block_full_4(task, tri, x + ix, y + iy);
}
static INLINE unsigned
build_mask(int c, int dcdx, int dcdy)
{
int mask = 0;
int c0 = c;
int c1 = c0 + dcdx;
int c2 = c1 + dcdx;
int c3 = c2 + dcdx;
mask |= ((c0 + 0 * dcdy) >> 31) & (1 << 0);
mask |= ((c0 + 1 * dcdy) >> 31) & (1 << 2);
mask |= ((c0 + 2 * dcdy) >> 31) & (1 << 8);
mask |= ((c0 + 3 * dcdy) >> 31) & (1 << 10);
mask |= ((c1 + 0 * dcdy) >> 31) & (1 << 1);
mask |= ((c1 + 1 * dcdy) >> 31) & (1 << 3);
mask |= ((c1 + 2 * dcdy) >> 31) & (1 << 9);
mask |= ((c1 + 3 * dcdy) >> 31) & (1 << 11);
mask |= ((c2 + 0 * dcdy) >> 31) & (1 << 4);
mask |= ((c2 + 1 * dcdy) >> 31) & (1 << 6);
mask |= ((c2 + 2 * dcdy) >> 31) & (1 << 12);
mask |= ((c2 + 3 * dcdy) >> 31) & (1 << 14);
mask |= ((c3 + 0 * dcdy) >> 31) & (1 << 5);
mask |= ((c3 + 1 * dcdy) >> 31) & (1 << 7);
mask |= ((c3 + 2 * dcdy) >> 31) & (1 << 13);
mask |= ((c3 + 3 * dcdy) >> 31) & (1 << 15);
return mask;
}
static INLINE unsigned
build_mask_linear(int c, int dcdx, int dcdy)
{
int mask = 0;
int c0 = c;
int c1 = c0 + dcdy;
int c2 = c1 + dcdy;
int c3 = c2 + dcdy;
mask |= ((c0 + 0 * dcdx) >> 31) & (1 << 0);
mask |= ((c0 + 1 * dcdx) >> 31) & (1 << 1);
mask |= ((c0 + 2 * dcdx) >> 31) & (1 << 2);
mask |= ((c0 + 3 * dcdx) >> 31) & (1 << 3);
mask |= ((c1 + 0 * dcdx) >> 31) & (1 << 4);
mask |= ((c1 + 1 * dcdx) >> 31) & (1 << 5);
mask |= ((c1 + 2 * dcdx) >> 31) & (1 << 6);
mask |= ((c1 + 3 * dcdx) >> 31) & (1 << 7);
mask |= ((c2 + 0 * dcdx) >> 31) & (1 << 8);
mask |= ((c2 + 1 * dcdx) >> 31) & (1 << 9);
mask |= ((c2 + 2 * dcdx) >> 31) & (1 << 10);
mask |= ((c2 + 3 * dcdx) >> 31) & (1 << 11);
mask |= ((c3 + 0 * dcdx) >> 31) & (1 << 12);
mask |= ((c3 + 1 * dcdx) >> 31) & (1 << 13);
mask |= ((c3 + 2 * dcdx) >> 31) & (1 << 14);
mask |= ((c3 + 3 * dcdx) >> 31) & (1 << 15);
return mask;
}
#define TAG(x) x##_1
#define NR_PLANES 1
#include "lp_rast_tri_tmp.h"
#define TAG(x) x##_2
#define NR_PLANES 2
#include "lp_rast_tri_tmp.h"
#define TAG(x) x##_3
#define NR_PLANES 3
#include "lp_rast_tri_tmp.h"
#define TAG(x) x##_4
#define NR_PLANES 4
#include "lp_rast_tri_tmp.h"
#define TAG(x) x##_5
#define NR_PLANES 5
#include "lp_rast_tri_tmp.h"
#define TAG(x) x##_6
#define NR_PLANES 6
#include "lp_rast_tri_tmp.h"
#define TAG(x) x##_7
#define NR_PLANES 7
#include "lp_rast_tri_tmp.h"
/* Special case for 3 plane triangle which is contained entirely
* within a 16x16 block.
*/
void
lp_rast_triangle_3_16(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_rast_triangle *tri = arg.triangle.tri;
const struct lp_rast_plane *plane = tri->plane;
unsigned mask = arg.triangle.plane_mask;
const int x = task->x + (mask & 0xf) * 16;
const int y = task->y + (mask >> 4) * 16;
unsigned outmask, inmask, partmask, partial_mask;
unsigned j;
int c[3];
outmask = 0; /* outside one or more trivial reject planes */
partmask = 0; /* outside one or more trivial accept planes */
for (j = 0; j < 3; j++) {
c[j] = plane[j].c + plane[j].dcdy * y - plane[j].dcdx * x;
{
const int dcdx = -plane[j].dcdx * 4;
const int dcdy = plane[j].dcdy * 4;
const int cox = c[j] + plane[j].eo * 4;
const int cio = c[j] + plane[j].ei * 4 - 1;
outmask |= build_mask_linear(cox, dcdx, dcdy);
partmask |= build_mask_linear(cio, dcdx, dcdy);
}
}
if (outmask == 0xffff)
return;
/* Mask of sub-blocks which are inside all trivial accept planes:
*/
inmask = ~partmask & 0xffff;
/* Mask of sub-blocks which are inside all trivial reject planes,
* but outside at least one trivial accept plane:
*/
partial_mask = partmask & ~outmask;
assert((partial_mask & inmask) == 0);
/* Iterate over partials:
*/
while (partial_mask) {
int i = ffs(partial_mask) - 1;
int ix = (i & 3) * 4;
int iy = (i >> 2) * 4;
int px = x + ix;
int py = y + iy;
int cx[3];
partial_mask &= ~(1 << i);
for (j = 0; j < 3; j++)
cx[j] = (c[j]
- plane[j].dcdx * ix
+ plane[j].dcdy * iy);
do_block_4_3(task, tri, plane, px, py, cx);
}
/* Iterate over fulls:
*/
while (inmask) {
int i = ffs(inmask) - 1;
int ix = (i & 3) * 4;
int iy = (i >> 2) * 4;
int px = x + ix;
int py = y + iy;
inmask &= ~(1 << i);
block_full_4(task, tri, px, py);
}
}
|
