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
|
/*
Copyright (C) Intel Corp. 2006. All Rights Reserved.
Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
develop this 3D driver.
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, sublicense, 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 NONINFRINGEMENT.
IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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.
**********************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "main/glheader.h"
#include "main/macros.h"
#include "main/enums.h"
#include "intel_batchbuffer.h"
#include "brw_defines.h"
#include "brw_context.h"
#include "brw_eu.h"
#include "brw_util.h"
#include "brw_state.h"
#include "brw_gs.h"
#include "glsl/ralloc.h"
static void compile_gs_prog( struct brw_context *brw,
struct brw_gs_prog_key *key )
{
struct intel_context *intel = &brw->intel;
struct brw_gs_compile c;
const GLuint *program;
void *mem_ctx;
GLuint program_size;
/* Gen6: VF has already converted into polygon, and LINELOOP is
* converted to LINESTRIP at the beginning of the 3D pipeline.
*/
if (intel->gen >= 6)
return;
memset(&c, 0, sizeof(c));
c.key = *key;
/* Need to locate the two positions present in vertex + header.
* These are currently hardcoded:
*/
c.nr_attrs = brw_count_bits(c.key.attrs);
if (intel->gen >= 5)
c.nr_regs = (c.nr_attrs + 1) / 2 + 3; /* are vertices packed, or reg-aligned? */
else
c.nr_regs = (c.nr_attrs + 1) / 2 + 1; /* are vertices packed, or reg-aligned? */
c.nr_bytes = c.nr_regs * REG_SIZE;
mem_ctx = NULL;
/* Begin the compilation:
*/
brw_init_compile(brw, &c.func, mem_ctx);
c.func.single_program_flow = 1;
/* For some reason the thread is spawned with only 4 channels
* unmasked.
*/
brw_set_mask_control(&c.func, BRW_MASK_DISABLE);
/* Note that primitives which don't require a GS program have
* already been weeded out by this stage:
*/
switch (key->primitive) {
case GL_QUADS:
brw_gs_quads( &c, key );
break;
case GL_QUAD_STRIP:
brw_gs_quad_strip( &c, key );
break;
case GL_LINE_LOOP:
brw_gs_lines( &c );
break;
default:
ralloc_free(mem_ctx);
return;
}
/* get the program
*/
program = brw_get_program(&c.func, &program_size);
if (unlikely(INTEL_DEBUG & DEBUG_GS)) {
int i;
printf("gs:\n");
for (i = 0; i < program_size / sizeof(struct brw_instruction); i++)
brw_disasm(stdout, &((struct brw_instruction *)program)[i],
intel->gen);
printf("\n");
}
brw_upload_cache(&brw->cache, BRW_GS_PROG,
&c.key, sizeof(c.key),
program, program_size,
&c.prog_data, sizeof(c.prog_data),
&brw->gs.prog_offset, &brw->gs.prog_data);
ralloc_free(mem_ctx);
}
static const GLenum gs_prim[GL_POLYGON+1] = {
GL_POINTS,
GL_LINES,
GL_LINE_LOOP,
GL_LINES,
GL_TRIANGLES,
GL_TRIANGLES,
GL_TRIANGLES,
GL_QUADS,
GL_QUAD_STRIP,
GL_TRIANGLES
};
static void populate_key( struct brw_context *brw,
struct brw_gs_prog_key *key )
{
struct gl_context *ctx = &brw->intel.ctx;
struct intel_context *intel = &brw->intel;
memset(key, 0, sizeof(*key));
/* CACHE_NEW_VS_PROG */
key->attrs = brw->vs.prog_data->outputs_written;
/* BRW_NEW_PRIMITIVE */
key->primitive = gs_prim[brw->primitive];
/* _NEW_LIGHT */
key->pv_first = (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION);
if (key->primitive == GL_QUADS && ctx->Light.ShadeModel != GL_FLAT) {
/* Provide consistent primitive order with brw_set_prim's
* optimization of single quads to trifans.
*/
key->pv_first = GL_TRUE;
}
key->need_gs_prog = (intel->gen >= 6)
? 0
: (brw->primitive == GL_QUADS ||
brw->primitive == GL_QUAD_STRIP ||
brw->primitive == GL_LINE_LOOP);
}
/* Calculate interpolants for triangle and line rasterization.
*/
static void prepare_gs_prog(struct brw_context *brw)
{
struct brw_gs_prog_key key;
/* Populate the key:
*/
populate_key(brw, &key);
if (brw->gs.prog_active != key.need_gs_prog) {
brw->state.dirty.cache |= CACHE_NEW_GS_PROG;
brw->gs.prog_active = key.need_gs_prog;
}
if (brw->gs.prog_active) {
if (!brw_search_cache(&brw->cache, BRW_GS_PROG,
&key, sizeof(key),
&brw->gs.prog_offset, &brw->gs.prog_data)) {
compile_gs_prog( brw, &key );
}
}
}
const struct brw_tracked_state brw_gs_prog = {
.dirty = {
.mesa = _NEW_LIGHT,
.brw = BRW_NEW_PRIMITIVE,
.cache = CACHE_NEW_VS_PROG
},
.prepare = prepare_gs_prog
};
|
