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
|
/**************************************************************************
*
* Copyright 2007 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.
*
**************************************************************************/
/**
* Post-transform vertex format info. The vertex_info struct is used by
* the draw_vbuf code to emit hardware-specific vertex layouts into hw
* vertex buffers.
*
* Author:
* Brian Paul
*/
#ifndef DRAW_VERTEX_H
#define DRAW_VERTEX_H
#include "pipe/p_compiler.h"
#include "pipe/p_state.h"
#include "util/u_debug.h"
#include "util/u_memory.h"
/**
* Vertex attribute emit modes
*/
enum attrib_emit {
EMIT_OMIT, /**< don't emit the attribute */
EMIT_1F,
EMIT_1F_PSIZE, /**< insert constant point size */
EMIT_2F,
EMIT_3F,
EMIT_4F,
EMIT_4UB, /**< is RGBA like the rest */
EMIT_4UB_BGRA
};
/**
* Attribute interpolation mode
*/
enum interp_mode {
INTERP_NONE, /**< never interpolate vertex header info */
INTERP_POS, /**< special case for frag position */
INTERP_CONSTANT,
INTERP_LINEAR,
INTERP_PERSPECTIVE
};
/**
* Information about hardware/rasterization vertex layout.
*/
struct vertex_info
{
uint num_attribs;
uint hwfmt[4]; /**< hardware format info for this format */
uint size; /**< total vertex size in dwords */
/* Keep this small and at the end of the struct to allow quick
* memcmp() comparisons.
*/
struct {
unsigned interp_mode:4; /**< INTERP_x */
unsigned emit:4; /**< EMIT_x */
unsigned src_index:8; /**< map to post-xform attribs */
} attrib[PIPE_MAX_SHADER_OUTPUTS];
};
static INLINE size_t
draw_vinfo_size( const struct vertex_info *a )
{
return offsetof(const struct vertex_info, attrib[a->num_attribs]);
}
static INLINE int
draw_vinfo_compare( const struct vertex_info *a,
const struct vertex_info *b )
{
size_t sizea = draw_vinfo_size( a );
return memcmp( a, b, sizea );
}
static INLINE void
draw_vinfo_copy( struct vertex_info *dst,
const struct vertex_info *src )
{
size_t size = draw_vinfo_size( src );
memcpy( dst, src, size );
}
/**
* Add another attribute to the given vertex_info object.
* \param src_index indicates which post-transformed vertex attrib slot
* corresponds to this attribute.
* \return slot in which the attribute was added
*/
static INLINE uint
draw_emit_vertex_attr(struct vertex_info *vinfo,
enum attrib_emit emit,
enum interp_mode interp, /* only used by softpipe??? */
int src_index)
{
const uint n = vinfo->num_attribs;
/* If the src_index is negative, meaning it hasn't been found
* lets just redirect it to the first output slot */
if (src_index < 0) {
src_index = 0;
}
assert(n < Elements(vinfo->attrib));
vinfo->attrib[n].emit = emit;
vinfo->attrib[n].interp_mode = interp;
vinfo->attrib[n].src_index = src_index;
vinfo->num_attribs++;
return n;
}
extern void draw_compute_vertex_size(struct vertex_info *vinfo);
void draw_dump_emitted_vertex(const struct vertex_info *vinfo,
const uint8_t *data);
static INLINE enum pipe_format draw_translate_vinfo_format(enum attrib_emit emit)
{
switch (emit) {
case EMIT_OMIT:
return PIPE_FORMAT_NONE;
case EMIT_1F:
case EMIT_1F_PSIZE:
return PIPE_FORMAT_R32_FLOAT;
case EMIT_2F:
return PIPE_FORMAT_R32G32_FLOAT;
case EMIT_3F:
return PIPE_FORMAT_R32G32B32_FLOAT;
case EMIT_4F:
return PIPE_FORMAT_R32G32B32A32_FLOAT;
case EMIT_4UB:
return PIPE_FORMAT_R8G8B8A8_UNORM;
case EMIT_4UB_BGRA:
return PIPE_FORMAT_B8G8R8A8_UNORM;
default:
assert(!"unexpected format");
return PIPE_FORMAT_NONE;
}
}
static INLINE unsigned draw_translate_vinfo_size(enum attrib_emit emit)
{
switch (emit) {
case EMIT_OMIT:
return 0;
case EMIT_1F:
case EMIT_1F_PSIZE:
return 1 * sizeof(float);
case EMIT_2F:
return 2 * sizeof(float);
case EMIT_3F:
return 3 * sizeof(float);
case EMIT_4F:
return 4 * sizeof(float);
case EMIT_4UB:
return 4 * sizeof(unsigned char);
case EMIT_4UB_BGRA:
return 4 * sizeof(unsigned char);
default:
assert(!"unexpected format");
return 0;
}
}
#endif /* DRAW_VERTEX_H */
|
