1 /*
2 * Copyright (C) 2009-2010 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27 #include "main/bufferobj.h"
28 #include "nouveau_driver.h"
29 #include "nouveau_array.h"
30 #include "nouveau_bufferobj.h"
31 #include "nouveau_context.h"
32
33 #define EXTRACT(in_t, out_t) extract_func_##in_t##_to_##out_t
34
35 #define EXTRACT_FUNC(in_t, out_t, k) \
36 static out_t EXTRACT(in_t, out_t) \
37 (struct nouveau_array *a, int i, int j) { \
38 in_t x = ((in_t *)(a->buf + i * a->stride))[j]; \
39 \
40 return (out_t)x / (k); \
41 }
42
43 EXTRACT_FUNC(GLchar, unsigned, 1);
44 EXTRACT_FUNC(GLchar, float, SCHAR_MAX);
45 EXTRACT_FUNC(GLubyte, unsigned, 1);
46 EXTRACT_FUNC(GLubyte, float, UCHAR_MAX);
47 EXTRACT_FUNC(GLshort, unsigned, 1);
48 EXTRACT_FUNC(GLshort, float, SHRT_MAX);
49 EXTRACT_FUNC(GLushort, unsigned, 1);
50 EXTRACT_FUNC(GLushort, float, USHRT_MAX);
51 EXTRACT_FUNC(GLint, unsigned, 1);
52 EXTRACT_FUNC(GLint, float, INT_MAX);
53 EXTRACT_FUNC(GLuint, unsigned, 1);
54 EXTRACT_FUNC(GLuint, float, UINT_MAX);
55 EXTRACT_FUNC(GLfloat, unsigned, 1.0 / UINT_MAX);
56 EXTRACT_FUNC(GLfloat, float, 1);
57
58 #undef EXTRACT_FUNC
59
60 static void
get_array_extract(struct nouveau_array * a,extract_u_t * extract_u,extract_f_t * extract_f)61 get_array_extract(struct nouveau_array *a, extract_u_t *extract_u,
62 extract_f_t *extract_f)
63 {
64 switch (a->type) {
65 case GL_BYTE:
66 *extract_u = EXTRACT(GLchar, unsigned);
67 *extract_f = EXTRACT(GLchar, float);
68 break;
69 case GL_UNSIGNED_BYTE:
70 *extract_u = EXTRACT(GLubyte, unsigned);
71 *extract_f = EXTRACT(GLubyte, float);
72 break;
73 case GL_SHORT:
74 *extract_u = EXTRACT(GLshort, unsigned);
75 *extract_f = EXTRACT(GLshort, float);
76 break;
77 case GL_UNSIGNED_SHORT:
78 *extract_u = EXTRACT(GLushort, unsigned);
79 *extract_f = EXTRACT(GLushort, float);
80 break;
81 case GL_INT:
82 *extract_u = EXTRACT(GLint, unsigned);
83 *extract_f = EXTRACT(GLint, float);
84 break;
85 case GL_UNSIGNED_INT:
86 *extract_u = EXTRACT(GLuint, unsigned);
87 *extract_f = EXTRACT(GLuint, float);
88 break;
89 case GL_FLOAT:
90 *extract_u = EXTRACT(GLfloat, unsigned);
91 *extract_f = EXTRACT(GLfloat, float);
92 break;
93 default:
94 assert(0);
95 }
96 }
97 #undef EXTRACT
98
99 void
nouveau_init_array(struct nouveau_array * a,int attr,int stride,int fields,int type,struct gl_buffer_object * obj,const void * ptr,GLboolean map,struct gl_context * ctx)100 nouveau_init_array(struct nouveau_array *a, int attr, int stride,
101 int fields, int type, struct gl_buffer_object *obj,
102 const void *ptr, GLboolean map, struct gl_context *ctx)
103 {
104 struct nouveau_client *client = context_client(ctx);
105
106 a->attr = attr;
107 a->stride = stride;
108 a->fields = fields;
109 a->type = type;
110 a->buf = NULL;
111
112 if (obj) {
113 if (nouveau_bufferobj_hw(obj)) {
114 struct nouveau_bufferobj *nbo =
115 to_nouveau_bufferobj(obj);
116
117 nouveau_bo_ref(nbo->bo, &a->bo);
118 a->offset = (intptr_t)ptr;
119
120 if (map) {
121 nouveau_bo_map(a->bo, NOUVEAU_BO_RD, client);
122 a->buf = a->bo->map + a->offset;
123 }
124
125 } else {
126 nouveau_bo_ref(NULL, &a->bo);
127 a->offset = 0;
128
129 if (map)
130 a->buf = ADD_POINTERS(
131 nouveau_bufferobj_sys(obj), ptr);
132 }
133 }
134
135 if (a->buf)
136 get_array_extract(a, &a->extract_u, &a->extract_f);
137 }
138
139 void
nouveau_deinit_array(struct nouveau_array * a)140 nouveau_deinit_array(struct nouveau_array *a)
141 {
142 a->buf = NULL;
143 a->fields = 0;
144 }
145
146 void
nouveau_cleanup_array(struct nouveau_array * a)147 nouveau_cleanup_array(struct nouveau_array *a)
148 {
149 nouveau_deinit_array(a);
150 nouveau_bo_ref(NULL, &a->bo);
151 }
152