1 /*
2 * Copyright 2008 Tungsten Graphics, inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /**
27 * Vertex fetch/store/convert code. This functionality is used in two places:
28 * 1. Vertex fetch/convert - to grab vertex data from incoming vertex
29 * arrays and convert to format needed by vertex shaders.
30 * 2. Vertex store/emit - to convert simple float[][4] vertex attributes
31 * (which is the organization used throughout the draw/prim pipeline) to
32 * hardware-specific formats and emit into hardware vertex buffers.
33 *
34 *
35 * Authors:
36 * Keith Whitwell <keithw@tungstengraphics.com>
37 */
38
39 #ifndef _TRANSLATE_H
40 #define _TRANSLATE_H
41
42
43 #include "pipe/p_compiler.h"
44 #include "pipe/p_format.h"
45 #include "pipe/p_state.h"
46
47 enum translate_element_type {
48 TRANSLATE_ELEMENT_NORMAL,
49 TRANSLATE_ELEMENT_INSTANCE_ID
50 };
51
52 struct translate_element
53 {
54 enum translate_element_type type;
55 enum pipe_format input_format;
56 enum pipe_format output_format;
57 unsigned input_buffer:8;
58 unsigned input_offset:24;
59 unsigned instance_divisor;
60 unsigned output_offset;
61 };
62
63
64 struct translate_key {
65 unsigned output_stride;
66 unsigned nr_elements;
67 struct translate_element element[PIPE_MAX_ATTRIBS + 1];
68 };
69
70
71 struct translate;
72
73
74 typedef void (PIPE_CDECL *run_elts_func)(struct translate *,
75 const unsigned *elts,
76 unsigned count,
77 unsigned instance_id,
78 void *output_buffer);
79
80 typedef void (PIPE_CDECL *run_elts16_func)(struct translate *,
81 const uint16_t *elts,
82 unsigned count,
83 unsigned instance_id,
84 void *output_buffer);
85
86 typedef void (PIPE_CDECL *run_elts8_func)(struct translate *,
87 const uint8_t *elts,
88 unsigned count,
89 unsigned instance_id,
90 void *output_buffer);
91
92 typedef void (PIPE_CDECL *run_func)(struct translate *,
93 unsigned start,
94 unsigned count,
95 unsigned instance_id,
96 void *output_buffer);
97
98 struct translate {
99 struct translate_key key;
100
101 void (*release)( struct translate * );
102
103 void (*set_buffer)( struct translate *,
104 unsigned i,
105 const void *ptr,
106 unsigned stride,
107 unsigned max_index );
108
109 run_elts_func run_elts;
110 run_elts16_func run_elts16;
111 run_elts8_func run_elts8;
112 run_func run;
113 };
114
115
116
117 struct translate *translate_create( const struct translate_key *key );
118
119 boolean translate_is_output_format_supported(enum pipe_format format);
120
translate_keysize(const struct translate_key * key)121 static INLINE int translate_keysize( const struct translate_key *key )
122 {
123 return 2 * sizeof(int) + key->nr_elements * sizeof(struct translate_element);
124 }
125
translate_key_compare(const struct translate_key * a,const struct translate_key * b)126 static INLINE int translate_key_compare( const struct translate_key *a,
127 const struct translate_key *b )
128 {
129 int keysize_a = translate_keysize(a);
130 int keysize_b = translate_keysize(b);
131
132 if (keysize_a != keysize_b) {
133 return keysize_a - keysize_b;
134 }
135 return memcmp(a, b, keysize_a);
136 }
137
138
translate_key_sanitize(struct translate_key * a)139 static INLINE void translate_key_sanitize( struct translate_key *a )
140 {
141 int keysize = translate_keysize(a);
142 char *ptr = (char *)a;
143 memset(ptr + keysize, 0, sizeof(*a) - keysize);
144 }
145
146
147 /*******************************************************************************
148 * Private:
149 */
150 struct translate *translate_sse2_create( const struct translate_key *key );
151
152 struct translate *translate_generic_create( const struct translate_key *key );
153
154 boolean translate_generic_is_output_format_supported(enum pipe_format format);
155
156 #endif
157