1 /*
2 ** Copyright 2008, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 ** http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17 #include <stdint.h>
18 #include <stddef.h>
19 #include <sys/types.h>
20
21 #include <cutils/atomic.h>
22 #include <utils/RefBase.h>
23 #include <utils/KeyedVector.h>
24 #include <utils/Errors.h>
25
26 #include <GLES/gl.h>
27
28 #include "BufferObjectManager.h"
29
30
31 namespace android {
32
33 using namespace gl;
34
35 // ----------------------------------------------------------------------------
36
EGLBufferObjectManager()37 EGLBufferObjectManager::EGLBufferObjectManager()
38 : TokenManager(), mCount(0)
39 {
40 }
41
~EGLBufferObjectManager()42 EGLBufferObjectManager::~EGLBufferObjectManager()
43 {
44 // destroy all the buffer objects and their storage
45 GLsizei n = mBuffers.size();
46 for (GLsizei i=0 ; i<n ; i++) {
47 buffer_t* bo = mBuffers.valueAt(i);
48 free(bo->data);
49 delete bo;
50 }
51 }
52
bind(GLuint buffer)53 buffer_t const* EGLBufferObjectManager::bind(GLuint buffer)
54 {
55 Mutex::Autolock _l(mLock);
56 int32_t i = mBuffers.indexOfKey(buffer);
57 if (i >= 0) {
58 return mBuffers.valueAt(i);
59 }
60 buffer_t* bo = new buffer_t;
61 bo->data = 0;
62 bo->usage = GL_STATIC_DRAW;
63 bo->size = 0;
64 bo->name = buffer;
65 mBuffers.add(buffer, bo);
66 return bo;
67 }
68
allocateStore(buffer_t * bo,GLsizeiptr size,GLenum usage)69 int EGLBufferObjectManager::allocateStore(buffer_t* bo,
70 GLsizeiptr size, GLenum usage)
71 {
72 Mutex::Autolock _l(mLock);
73 if (size != bo->size) {
74 uint8_t* data = (uint8_t*)malloc(size);
75 if (data == 0)
76 return -1;
77 free(bo->data);
78 bo->data = data;
79 bo->size = size;
80 }
81 bo->usage = usage;
82 return 0;
83 }
84
deleteBuffers(GLsizei n,const GLuint * buffers)85 void EGLBufferObjectManager::deleteBuffers(GLsizei n, const GLuint* buffers)
86 {
87 Mutex::Autolock _l(mLock);
88 while (n--) {
89 const GLuint t = *buffers++;
90 if (t) {
91 int32_t index = mBuffers.indexOfKey(t);
92 if (index >= 0) {
93 buffer_t* bo = mBuffers.valueAt(index);
94 free(bo->data);
95 mBuffers.removeItemsAt(index);
96 delete bo;
97 }
98 }
99 }
100 }
101
102 // ----------------------------------------------------------------------------
103 }; // namespace android
104