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
202
203
204
205
206
|
/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
#include "imports.h"
#include "mtypes.h"
#include "bufferobj.h"
#include "intel_context.h"
#include "intel_buffer_objects.h"
#include "bufmgr.h"
/**
* There is some duplication between mesa's bufferobjects and our
* bufmgr buffers. Both have an integer handle and a hashtable to
* lookup an opaque structure. It would be nice if the handles and
* internal structure where somehow shared.
*/
static struct gl_buffer_object *intel_bufferobj_alloc( GLcontext *ctx,
GLuint name,
GLenum target )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *obj = MALLOC_STRUCT(intel_buffer_object);
_mesa_initialize_buffer_object(&obj->Base, name, target);
/* XXX: We generate our own handle, which is different to 'name' above.
*/
bmGenBuffers(intel, "bufferobj", 1, &obj->buffer, 6);
assert(obj->buffer);
return &obj->Base;
}
/**
* Deallocate/free a vertex/pixel buffer object.
* Called via glDeleteBuffersARB().
*/
static void intel_bufferobj_free( GLcontext *ctx,
struct gl_buffer_object *obj )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
assert(intel_obj);
if (intel_obj->buffer)
bmDeleteBuffers( intel, 1, &intel_obj->buffer );
_mesa_free(intel_obj);
}
/**
* Allocate space for and store data in a buffer object. Any data that was
* previously stored in the buffer object is lost. If data is NULL,
* memory will be allocated, but no copy will occur.
* Called via glBufferDataARB().
*/
static void intel_bufferobj_data( GLcontext *ctx,
GLenum target,
GLsizeiptrARB size,
const GLvoid *data,
GLenum usage,
struct gl_buffer_object *obj )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
/* XXX: do something useful with 'usage' (eg. populate flags
* argument below)
*/
assert(intel_obj);
obj->Size = size;
obj->Usage = usage;
bmBufferData(intel, intel_obj->buffer, size, data, 0);
}
/**
* Replace data in a subrange of buffer object. If the data range
* specified by size + offset extends beyond the end of the buffer or
* if data is NULL, no copy is performed.
* Called via glBufferSubDataARB().
*/
static void intel_bufferobj_subdata( GLcontext *ctx,
GLenum target,
GLintptrARB offset,
GLsizeiptrARB size,
const GLvoid * data,
struct gl_buffer_object * obj )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
assert(intel_obj);
bmBufferSubData(intel, intel_obj->buffer, offset, size, data);
}
/**
* Called via glGetBufferSubDataARB().
*/
static void intel_bufferobj_get_subdata( GLcontext *ctx,
GLenum target,
GLintptrARB offset,
GLsizeiptrARB size,
GLvoid * data,
struct gl_buffer_object * obj )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
assert(intel_obj);
bmBufferGetSubData(intel, intel_obj->buffer, offset, size, data);
}
/**
* Called via glMapBufferARB().
*/
static void *intel_bufferobj_map( GLcontext *ctx,
GLenum target,
GLenum access,
struct gl_buffer_object *obj )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
/* XXX: Translate access to flags arg below:
*/
assert(intel_obj);
assert(intel_obj->buffer);
obj->Pointer = bmMapBuffer(intel, intel_obj->buffer, 0);
return obj->Pointer;
}
/**
* Called via glMapBufferARB().
*/
static GLboolean intel_bufferobj_unmap( GLcontext *ctx,
GLenum target,
struct gl_buffer_object *obj )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
assert(intel_obj);
assert(intel_obj->buffer);
assert(obj->Pointer);
bmUnmapBuffer(intel, intel_obj->buffer);
obj->Pointer = NULL;
return GL_TRUE;
}
struct buffer *intel_bufferobj_buffer( const struct intel_buffer_object *intel_obj )
{
assert(intel_obj->Base.Name);
assert(intel_obj->buffer);
return intel_obj->buffer;
}
void intel_bufferobj_init( struct intel_context *intel )
{
GLcontext *ctx = &intel->ctx;
ctx->Driver.NewBufferObject = intel_bufferobj_alloc;
ctx->Driver.DeleteBuffer = intel_bufferobj_free;
ctx->Driver.BufferData = intel_bufferobj_data;
ctx->Driver.BufferSubData = intel_bufferobj_subdata;
ctx->Driver.GetBufferSubData = intel_bufferobj_get_subdata;
ctx->Driver.MapBuffer = intel_bufferobj_map;
ctx->Driver.UnmapBuffer = intel_bufferobj_unmap;
}
|
