summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/radeon/radeon_buffer_objects.c
blob: 8fac5c6c512984ddd69fc842f63eb8d771bb0789 (plain)
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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
/*
 * Copyright 2009 Maciej Cencora <m.cencora@gmail.com>
 *
 * 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, sublicense, 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 NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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 "radeon_buffer_objects.h"

#include "main/imports.h"
#include "main/mtypes.h"
#include "main/bufferobj.h"

#include "radeon_common.h"

struct radeon_buffer_object *
get_radeon_buffer_object(struct gl_buffer_object *obj)
{
    return (struct radeon_buffer_object *) obj;
}

static struct gl_buffer_object *
radeonNewBufferObject(GLcontext * ctx,
                      GLuint name,
                      GLenum target)
{
    struct radeon_buffer_object *obj = CALLOC_STRUCT(radeon_buffer_object);

    _mesa_initialize_buffer_object(&obj->Base, name, target);

    obj->bo = NULL;

    return &obj->Base;
}

/**
 * Called via glDeleteBuffersARB().
 */
static void
radeonDeleteBufferObject(GLcontext * ctx,
                         struct gl_buffer_object *obj)
{
    struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);

    if (obj->Pointer) {
        radeon_bo_unmap(radeon_obj->bo);
    }

    if (radeon_obj->bo) {
        radeon_bo_unref(radeon_obj->bo);
    }

    _mesa_free(radeon_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 ctx->Driver.BufferData().
 * \return GL_TRUE for success, GL_FALSE if out of memory
 */
static GLboolean
radeonBufferData(GLcontext * ctx,
                 GLenum target,
                 GLsizeiptrARB size,
                 const GLvoid * data,
                 GLenum usage,
                 struct gl_buffer_object *obj)
{
    radeonContextPtr radeon = RADEON_CONTEXT(ctx);
    struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);

    radeon_obj->Base.Size = size;
    radeon_obj->Base.Usage = usage;

    if (radeon_obj->bo != NULL) {
        radeon_bo_unref(radeon_obj->bo);
        radeon_obj->bo = NULL;
    }

    if (size != 0) {
        radeon_obj->bo = radeon_bo_open(radeon->radeonScreen->bom,
                                        0,
                                        size,
                                        32,
                                        RADEON_GEM_DOMAIN_GTT,
                                        0);

        if (!radeon_obj->bo)
            return GL_FALSE;

        if (data != NULL) {
            radeon_bo_map(radeon_obj->bo, GL_TRUE);

            _mesa_memcpy(radeon_obj->bo->ptr, data, size);

            radeon_bo_unmap(radeon_obj->bo);
        }
    }
    return GL_TRUE;
}

/**
 * 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
radeonBufferSubData(GLcontext * ctx,
                    GLenum target,
                    GLintptrARB offset,
                    GLsizeiptrARB size,
                    const GLvoid * data,
                    struct gl_buffer_object *obj)
{
    struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);

    radeon_bo_map(radeon_obj->bo, GL_TRUE);

    _mesa_memcpy(radeon_obj->bo->ptr + offset, data, size);

    radeon_bo_unmap(radeon_obj->bo);
}

/**
 * Called via glGetBufferSubDataARB()
 */
static void
radeonGetBufferSubData(GLcontext * ctx,
                       GLenum target,
                       GLintptrARB offset,
                       GLsizeiptrARB size,
                       GLvoid * data,
                       struct gl_buffer_object *obj)
{
    struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);

    radeon_bo_map(radeon_obj->bo, GL_FALSE);

    _mesa_memcpy(data, radeon_obj->bo->ptr + offset, size);

    radeon_bo_unmap(radeon_obj->bo);
}

/**
 * Called via glMapBufferARB()
 */
static void *
radeonMapBuffer(GLcontext * ctx,
                GLenum target,
                GLenum access,
                struct gl_buffer_object *obj)
{
    struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);

    if (access == GL_WRITE_ONLY_ARB) {
        ctx->Driver.Flush(ctx);
    }

    if (radeon_obj->bo == NULL) {
        obj->Pointer = NULL;
        return NULL;
    }

    radeon_bo_map(radeon_obj->bo, access == GL_WRITE_ONLY_ARB);

    obj->Pointer = radeon_obj->bo->ptr;
    obj->Length = obj->Size;
    obj->Offset = 0;

    return obj->Pointer;
}


/**
 * Called via glUnmapBufferARB()
 */
static GLboolean
radeonUnmapBuffer(GLcontext * ctx,
                  GLenum target,
                  struct gl_buffer_object *obj)
{
    struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);

    if (radeon_obj->bo != NULL) {
        radeon_bo_unmap(radeon_obj->bo);
    }

    obj->Pointer = NULL;
    obj->Offset = 0;
    obj->Length = 0;

    return GL_TRUE;
}

void
radeonInitBufferObjectFuncs(struct dd_function_table *functions)
{
    functions->NewBufferObject = radeonNewBufferObject;
    functions->DeleteBuffer = radeonDeleteBufferObject;
    functions->BufferData = radeonBufferData;
    functions->BufferSubData = radeonBufferSubData;
    functions->GetBufferSubData = radeonGetBufferSubData;
    functions->MapBuffer = radeonMapBuffer;
    functions->UnmapBuffer = radeonUnmapBuffer;
}