Initial Contribution

1 files changed, 103 insertions, 0 deletions

diff --git a/opengl/libagl/BufferObjectManager.cpp b/opengl/libagl/BufferObjectManager.cpp
new file mode 100644
index 0000000..6bf28ee
--- /dev/null
+++ b/opengl/libagl/BufferObjectManager.cpp
@@ -0,0 +1,103 @@
+/*
+ ** Copyright 2008, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License"); 
+ ** you may not use this file except in compliance with the License. 
+ ** You may obtain a copy of the License at 
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0 
+ **
+ ** Unless required by applicable law or agreed to in writing, software 
+ ** distributed under the License is distributed on an "AS IS" BASIS, 
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+ ** See the License for the specific language governing permissions and 
+ ** limitations under the License.
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+#include <sys/types.h>
+
+#include <utils/Atomic.h>
+#include <utils/RefBase.h>
+#include <utils/KeyedVector.h>
+#include <utils/Errors.h>
+
+#include <GLES/gl.h>
+
+#include "BufferObjectManager.h"
+
+
+namespace android {
+
+using namespace gl;
+
+// ----------------------------------------------------------------------------
+
+EGLBufferObjectManager::EGLBufferObjectManager() 
+: TokenManager(), mCount(0)
+{
+}
+
+EGLBufferObjectManager::~EGLBufferObjectManager()
+{
+    // destroy all the buffer objects and their storage
+    GLsizei n = mBuffers.size();
+    for (GLsizei i=0 ; i<n ; i++) {
+        buffer_t* bo = mBuffers.valueAt(i);
+        free(bo->data);
+        delete bo;
+    }
+}
+
+buffer_t const* EGLBufferObjectManager::bind(GLuint buffer)
+{
+    Mutex::Autolock _l(mLock);
+    int32_t i = mBuffers.indexOfKey(buffer);
+    if (i >= 0) {
+        return mBuffers.valueAt(i);
+    }
+    buffer_t* bo = new buffer_t;
+    bo->data = 0;
+    bo->usage = GL_STATIC_DRAW;
+    bo->size = 0;
+    bo->name = buffer;
+    mBuffers.add(buffer, bo);
+    return bo;
+}
+
+int EGLBufferObjectManager::allocateStore(buffer_t* bo,
+        GLsizeiptr size, GLenum usage)
+{
+    Mutex::Autolock _l(mLock);
+    if (size != bo->size) {
+       uint8_t* data = (uint8_t*)malloc(size);
+        if (data == 0)
+            return -1;
+        free(bo->data);
+        bo->data = data;
+        bo->size = size;
+    }
+    bo->usage = usage;
+    return 0;
+}
+
+void EGLBufferObjectManager::deleteBuffers(GLsizei n, const GLuint* buffers)
+{
+    Mutex::Autolock _l(mLock);
+    while (n--) {
+        const GLuint t = *buffers++;
+        if (t) {
+            int32_t index = mBuffers.indexOfKey(t);
+            if (index >= 0) {
+                buffer_t* bo = mBuffers.valueAt(index);
+                free(bo->data);
+                mBuffers.removeItemsAt(index);
+                delete bo;
+            }
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android