1 files changed, 340 insertions, 0 deletions
diff --git a/ANGLE/src/libGLESv2/ResourceManager.cpp b/ANGLE/src/libGLESv2/ResourceManager.cpp
new file mode 100644
index 0000000..12a86c1
--- /dev/null
+++ b/ANGLE/src/libGLESv2/ResourceManager.cpp
@@ -0,0 +1,340 @@
+//
+// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// ResourceManager.cpp: Implements the gl::ResourceManager class, which tracks and 
+// retrieves objects which may be shared by multiple Contexts.
+
+#include "libGLESv2/ResourceManager.h"
+
+#include "libGLESv2/Buffer.h"
+#include "libGLESv2/Program.h"
+#include "libGLESv2/RenderBuffer.h"
+#include "libGLESv2/Shader.h"
+#include "libGLESv2/Texture.h"
+
+namespace gl
+{
+ResourceManager::ResourceManager()
+{
+    mRefCount = 1;
+}
+
+ResourceManager::~ResourceManager()
+{
+    while (!mBufferMap.empty())
+    {
+        deleteBuffer(mBufferMap.begin()->first);
+    }
+
+    while (!mProgramMap.empty())
+    {
+        deleteProgram(mProgramMap.begin()->first);
+    }
+
+    while (!mShaderMap.empty())
+    {
+        deleteShader(mShaderMap.begin()->first);
+    }
+
+    while (!mRenderbufferMap.empty())
+    {
+        deleteRenderbuffer(mRenderbufferMap.begin()->first);
+    }
+
+    while (!mTextureMap.empty())
+    {
+        deleteTexture(mTextureMap.begin()->first);
+    }
+}
+
+void ResourceManager::addRef()
+{
+    mRefCount++;
+}
+
+void ResourceManager::release()
+{
+    if (--mRefCount == 0)
+    {
+        delete this;
+    }
+}
+
+// Returns an unused buffer name
+GLuint ResourceManager::createBuffer()
+{
+    unsigned int handle = 1;
+
+    while (mBufferMap.find(handle) != mBufferMap.end())
+    {
+        handle++;
+    }
+
+    mBufferMap[handle] = NULL;
+
+    return handle;
+}
+
+// Returns an unused shader/program name
+GLuint ResourceManager::createShader(GLenum type)
+{
+    unsigned int handle = 1;
+
+    while (mShaderMap.find(handle) != mShaderMap.end() || mProgramMap.find(handle) != mProgramMap.end())   // Shared name space
+    {
+        handle++;
+    }
+
+    if (type == GL_VERTEX_SHADER)
+    {
+        mShaderMap[handle] = new VertexShader(this, handle);
+    }
+    else if (type == GL_FRAGMENT_SHADER)
+    {
+        mShaderMap[handle] = new FragmentShader(this, handle);
+    }
+    else UNREACHABLE();
+
+    return handle;
+}
+
+// Returns an unused program/shader name
+GLuint ResourceManager::createProgram()
+{
+    unsigned int handle = 1;
+
+    while (mProgramMap.find(handle) != mProgramMap.end() || mShaderMap.find(handle) != mShaderMap.end())   // Shared name space
+    {
+        handle++;
+    }
+
+    mProgramMap[handle] = new Program(this, handle);
+
+    return handle;
+}
+
+// Returns an unused texture name
+GLuint ResourceManager::createTexture()
+{
+    unsigned int handle = 1;
+
+    while (mTextureMap.find(handle) != mTextureMap.end())
+    {
+        handle++;
+    }
+
+    mTextureMap[handle] = NULL;
+
+    return handle;
+}
+
+// Returns an unused renderbuffer name
+GLuint ResourceManager::createRenderbuffer()
+{
+    unsigned int handle = 1;
+
+    while (mRenderbufferMap.find(handle) != mRenderbufferMap.end())
+    {
+        handle++;
+    }
+
+    mRenderbufferMap[handle] = NULL;
+
+    return handle;
+}
+
+void ResourceManager::deleteBuffer(GLuint buffer)
+{
+    BufferMap::iterator bufferObject = mBufferMap.find(buffer);
+
+    if (bufferObject != mBufferMap.end())
+    {
+        if (bufferObject->second) bufferObject->second->release();
+        mBufferMap.erase(bufferObject);
+    }
+}
+
+void ResourceManager::deleteShader(GLuint shader)
+{
+    ShaderMap::iterator shaderObject = mShaderMap.find(shader);
+
+    if (shaderObject != mShaderMap.end())
+    {
+        if (shaderObject->second->getRefCount() == 0)
+        {
+            delete shaderObject->second;
+            mShaderMap.erase(shaderObject);
+        }
+        else
+        {
+            shaderObject->second->flagForDeletion();
+        }
+    }
+}
+
+void ResourceManager::deleteProgram(GLuint program)
+{
+    ProgramMap::iterator programObject = mProgramMap.find(program);
+
+    if (programObject != mProgramMap.end())
+    {
+        if (programObject->second->getRefCount() == 0)
+        {
+            delete programObject->second;
+            mProgramMap.erase(programObject);
+        }
+        else
+        { 
+            programObject->second->flagForDeletion();
+        }
+    }
+}
+
+void ResourceManager::deleteTexture(GLuint texture)
+{
+    TextureMap::iterator textureObject = mTextureMap.find(texture);
+
+    if (textureObject != mTextureMap.end())
+    {
+        if (textureObject->second) textureObject->second->release();
+        mTextureMap.erase(textureObject);
+    }
+}
+
+void ResourceManager::deleteRenderbuffer(GLuint renderbuffer)
+{
+    RenderbufferMap::iterator renderbufferObject = mRenderbufferMap.find(renderbuffer);
+
+    if (renderbufferObject != mRenderbufferMap.end())
+    {
+        if (renderbufferObject->second) renderbufferObject->second->release();
+        mRenderbufferMap.erase(renderbufferObject);
+    }
+}
+
+Buffer *ResourceManager::getBuffer(unsigned int handle)
+{
+    BufferMap::iterator buffer = mBufferMap.find(handle);
+
+    if (buffer == mBufferMap.end())
+    {
+        return NULL;
+    }
+    else
+    {
+        return buffer->second;
+    }
+}
+
+Shader *ResourceManager::getShader(unsigned int handle)
+{
+    ShaderMap::iterator shader = mShaderMap.find(handle);
+
+    if (shader == mShaderMap.end())
+    {
+        return NULL;
+    }
+    else
+    {
+        return shader->second;
+    }
+}
+
+Texture *ResourceManager::getTexture(unsigned int handle)
+{
+    if (handle == 0) return NULL;
+
+    TextureMap::iterator texture = mTextureMap.find(handle);
+
+    if (texture == mTextureMap.end())
+    {
+        return NULL;
+    }
+    else
+    {
+        return texture->second;
+    }
+}
+
+Program *ResourceManager::getProgram(unsigned int handle)
+{
+    ProgramMap::iterator program = mProgramMap.find(handle);
+
+    if (program == mProgramMap.end())
+    {
+        return NULL;
+    }
+    else
+    {
+        return program->second;
+    }
+}
+
+Renderbuffer *ResourceManager::getRenderbuffer(unsigned int handle)
+{
+    RenderbufferMap::iterator renderbuffer = mRenderbufferMap.find(handle);
+
+    if (renderbuffer == mRenderbufferMap.end())
+    {
+        return NULL;
+    }
+    else
+    {
+        return renderbuffer->second;
+    }
+}
+
+void ResourceManager::setRenderbuffer(GLuint handle, Renderbuffer *buffer)
+{
+    mRenderbufferMap[handle] = buffer;
+}
+
+void ResourceManager::checkBufferAllocation(unsigned int buffer)
+{
+    if (buffer != 0 && !getBuffer(buffer))
+    {
+        Buffer *bufferObject = new Buffer(buffer);
+        mBufferMap[buffer] = bufferObject;
+        bufferObject->addRef();
+    }
+}
+
+void ResourceManager::checkTextureAllocation(GLuint texture, SamplerType type)
+{
+    if (!getTexture(texture) && texture != 0)
+    {
+        Texture *textureObject;
+
+        if (type == SAMPLER_2D)
+        {
+            textureObject = new Texture2D(texture);
+        }
+        else if (type == SAMPLER_CUBE)
+        {
+            textureObject = new TextureCubeMap(texture);
+        }
+        else
+        {
+            UNREACHABLE();
+            return;
+        }
+
+        mTextureMap[texture] = textureObject;
+        textureObject->addRef();
+    }
+}
+
+void ResourceManager::checkRenderbufferAllocation(GLuint renderbuffer)
+{
+    if (renderbuffer != 0 && !getRenderbuffer(renderbuffer))
+    {
+        Renderbuffer *renderbufferObject = new Renderbuffer(renderbuffer, new Colorbuffer(0, 0, GL_RGBA4, 0));
+        mRenderbufferMap[renderbuffer] = renderbufferObject;
+        renderbufferObject->addRef();
+    }
+}
+
+}