2 * Copyright (C) 2009 Francisco Jerez.
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:
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.
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.
27 #include "nouveau_driver.h"
28 #include "nouveau_bufferobj.h"
29 #include "nouveau_context.h"
31 #include "main/bufferobj.h"
34 get_bufferobj_map(struct gl_buffer_object *obj, unsigned flags)
36 struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj);
42 nouveau_bo_map(nbo->bo, flags);
44 nouveau_bo_unmap(nbo->bo);
50 static struct gl_buffer_object *
51 nouveau_bufferobj_new(struct gl_context *ctx, GLuint buffer, GLenum target)
53 struct nouveau_bufferobj *nbo;
55 nbo = CALLOC_STRUCT(nouveau_bufferobj);
59 _mesa_initialize_buffer_object(&nbo->base, buffer, target);
65 nouveau_bufferobj_del(struct gl_context *ctx, struct gl_buffer_object *obj)
67 struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj);
69 nouveau_bo_ref(NULL, &nbo->bo);
75 nouveau_bufferobj_data(struct gl_context *ctx, GLenum target, GLsizeiptrARB size,
76 const GLvoid *data, GLenum usage,
77 struct gl_buffer_object *obj)
79 struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj);
85 /* Free previous storage */
86 nouveau_bo_ref(NULL, &nbo->bo);
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);
96 /* Get a hardware BO */
97 ret = nouveau_bo_new(context_dev(ctx),
98 NOUVEAU_BO_GART | NOUVEAU_BO_MAP, 0,
104 memcpy(get_bufferobj_map(obj, NOUVEAU_BO_WR), data, size);
110 nouveau_bufferobj_subdata(struct gl_context *ctx, GLenum target, GLintptrARB offset,
111 GLsizeiptrARB size, const GLvoid *data,
112 struct gl_buffer_object *obj)
114 memcpy(get_bufferobj_map(obj, NOUVEAU_BO_WR) + offset, data, size);
118 nouveau_bufferobj_get_subdata(struct gl_context *ctx, GLenum target, GLintptrARB offset,
119 GLsizeiptrARB size, GLvoid *data,
120 struct gl_buffer_object *obj)
122 memcpy(data, get_bufferobj_map(obj, NOUVEAU_BO_RD) + offset, size);
126 nouveau_bufferobj_map(struct gl_context *ctx, GLenum target, GLenum access,
127 struct gl_buffer_object *obj)
131 if (access == GL_READ_ONLY_ARB ||
132 access == GL_READ_WRITE_ARB)
133 flags |= GL_MAP_READ_BIT;
134 if (access == GL_WRITE_ONLY_ARB ||
135 access == GL_READ_WRITE_ARB)
136 flags |= GL_MAP_WRITE_BIT;
138 return ctx->Driver.MapBufferRange(ctx, target, 0, obj->Size, flags,
143 nouveau_bufferobj_map_range(struct gl_context *ctx, GLenum target, GLintptr offset,
144 GLsizeiptr length, GLbitfield access,
145 struct gl_buffer_object *obj)
150 assert(!obj->Pointer);
152 if (access & GL_MAP_READ_BIT)
153 flags |= NOUVEAU_BO_RD;
154 if (access & GL_MAP_WRITE_BIT)
155 flags |= NOUVEAU_BO_WR;
156 if (access & GL_MAP_UNSYNCHRONIZED_BIT)
157 flags |= NOUVEAU_BO_NOSYNC;
159 map = get_bufferobj_map(obj, flags);
163 obj->Pointer = map + offset;
164 obj->Offset = offset;
165 obj->Length = length;
166 obj->AccessFlags = access;
172 nouveau_bufferobj_unmap(struct gl_context *ctx, GLenum target, struct gl_buffer_object *obj)
174 assert(obj->Pointer);
179 obj->AccessFlags = 0;
185 nouveau_bufferobj_functions_init(struct dd_function_table *functions)
187 functions->NewBufferObject = nouveau_bufferobj_new;
188 functions->DeleteBuffer = nouveau_bufferobj_del;
189 functions->BufferData = nouveau_bufferobj_data;
190 functions->BufferSubData = nouveau_bufferobj_subdata;
191 functions->GetBufferSubData = nouveau_bufferobj_get_subdata;
192 functions->MapBuffer = nouveau_bufferobj_map;
193 functions->MapBufferRange = nouveau_bufferobj_map_range;
194 functions->UnmapBuffer = nouveau_bufferobj_unmap;