1 /*
2 * Copyright (C) 2009 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 "nouveau_driver.h"
28 #include "nouveau_bufferobj.h"
29 #include "nouveau_context.h"
30
31 #include "main/bufferobj.h"
32
33 static inline char *
get_bufferobj_map(struct gl_context * ctx,struct gl_buffer_object * obj,unsigned flags)34 get_bufferobj_map(struct gl_context *ctx, struct gl_buffer_object *obj,
35 unsigned flags)
36 {
37 struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj);
38 void *map = NULL;
39
40 if (nbo->sys) {
41 map = nbo->sys;
42 } else if (nbo->bo) {
43 nouveau_bo_map(nbo->bo, flags, context_client(ctx));
44 map = nbo->bo->map;
45 }
46
47 return map;
48 }
49
50 static struct gl_buffer_object *
nouveau_bufferobj_new(struct gl_context * ctx,GLuint buffer,GLenum target)51 nouveau_bufferobj_new(struct gl_context *ctx, GLuint buffer, GLenum target)
52 {
53 struct nouveau_bufferobj *nbo;
54
55 nbo = CALLOC_STRUCT(nouveau_bufferobj);
56 if (!nbo)
57 return NULL;
58
59 _mesa_initialize_buffer_object(ctx, &nbo->base, buffer, target);
60
61 return &nbo->base;
62 }
63
64 static void
nouveau_bufferobj_del(struct gl_context * ctx,struct gl_buffer_object * obj)65 nouveau_bufferobj_del(struct gl_context *ctx, struct gl_buffer_object *obj)
66 {
67 struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj);
68
69 nouveau_bo_ref(NULL, &nbo->bo);
70 FREE(nbo->sys);
71 FREE(nbo);
72 }
73
74 static GLboolean
nouveau_bufferobj_data(struct gl_context * ctx,GLenum target,GLsizeiptrARB size,const GLvoid * data,GLenum usage,struct gl_buffer_object * obj)75 nouveau_bufferobj_data(struct gl_context *ctx, GLenum target, GLsizeiptrARB size,
76 const GLvoid *data, GLenum usage,
77 struct gl_buffer_object *obj)
78 {
79 struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj);
80 int ret;
81
82 obj->Size = size;
83 obj->Usage = usage;
84
85 /* Free previous storage */
86 nouveau_bo_ref(NULL, &nbo->bo);
87 FREE(nbo->sys);
88
89 if (target == GL_ELEMENT_ARRAY_BUFFER_ARB ||
90 (size < 512 && usage == GL_DYNAMIC_DRAW_ARB) ||
91 context_chipset(ctx) < 0x10) {
92 /* Heuristic: keep it in system ram */
93 nbo->sys = MALLOC(size);
94
95 } else {
96 /* Get a hardware BO */
97 ret = nouveau_bo_new(context_dev(ctx),
98 NOUVEAU_BO_GART | NOUVEAU_BO_MAP, 0,
99 size, NULL, &nbo->bo);
100 assert(!ret);
101 }
102
103 if (data)
104 memcpy(get_bufferobj_map(ctx, obj, NOUVEAU_BO_WR), data, size);
105
106 return GL_TRUE;
107 }
108
109 static void
nouveau_bufferobj_subdata(struct gl_context * ctx,GLintptrARB offset,GLsizeiptrARB size,const GLvoid * data,struct gl_buffer_object * obj)110 nouveau_bufferobj_subdata(struct gl_context *ctx, GLintptrARB offset,
111 GLsizeiptrARB size, const GLvoid *data,
112 struct gl_buffer_object *obj)
113 {
114 memcpy(get_bufferobj_map(ctx, obj, NOUVEAU_BO_WR) + offset, data, size);
115 }
116
117 static void
nouveau_bufferobj_get_subdata(struct gl_context * ctx,GLintptrARB offset,GLsizeiptrARB size,GLvoid * data,struct gl_buffer_object * obj)118 nouveau_bufferobj_get_subdata(struct gl_context *ctx, GLintptrARB offset,
119 GLsizeiptrARB size, GLvoid *data,
120 struct gl_buffer_object *obj)
121 {
122 memcpy(data, get_bufferobj_map(ctx, obj, NOUVEAU_BO_RD) + offset, size);
123 }
124
125 static void *
nouveau_bufferobj_map_range(struct gl_context * ctx,GLintptr offset,GLsizeiptr length,GLbitfield access,struct gl_buffer_object * obj)126 nouveau_bufferobj_map_range(struct gl_context *ctx, GLintptr offset,
127 GLsizeiptr length, GLbitfield access,
128 struct gl_buffer_object *obj)
129 {
130 unsigned flags = 0;
131 char *map;
132
133 assert(!obj->Pointer);
134
135 if (!(access & GL_MAP_UNSYNCHRONIZED_BIT)) {
136 if (access & GL_MAP_READ_BIT)
137 flags |= NOUVEAU_BO_RD;
138 if (access & GL_MAP_WRITE_BIT)
139 flags |= NOUVEAU_BO_WR;
140 }
141
142 map = get_bufferobj_map(ctx, obj, flags);
143 if (!map)
144 return NULL;
145
146 obj->Pointer = map + offset;
147 obj->Offset = offset;
148 obj->Length = length;
149 obj->AccessFlags = access;
150
151 return obj->Pointer;
152 }
153
154 static GLboolean
nouveau_bufferobj_unmap(struct gl_context * ctx,struct gl_buffer_object * obj)155 nouveau_bufferobj_unmap(struct gl_context *ctx, struct gl_buffer_object *obj)
156 {
157 assert(obj->Pointer);
158
159 obj->Pointer = NULL;
160 obj->Offset = 0;
161 obj->Length = 0;
162 obj->AccessFlags = 0;
163
164 return GL_TRUE;
165 }
166
167 void
nouveau_bufferobj_functions_init(struct dd_function_table * functions)168 nouveau_bufferobj_functions_init(struct dd_function_table *functions)
169 {
170 functions->NewBufferObject = nouveau_bufferobj_new;
171 functions->DeleteBuffer = nouveau_bufferobj_del;
172 functions->BufferData = nouveau_bufferobj_data;
173 functions->BufferSubData = nouveau_bufferobj_subdata;
174 functions->GetBufferSubData = nouveau_bufferobj_get_subdata;
175 functions->MapBufferRange = nouveau_bufferobj_map_range;
176 functions->UnmapBuffer = nouveau_bufferobj_unmap;
177 }
178