michael@0: #include "precompiled.h"
michael@0: //
michael@0: // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: // ResourceManager.cpp: Implements the gl::ResourceManager class, which tracks and 
michael@0: // retrieves objects which may be shared by multiple Contexts.
michael@0: 
michael@0: #include "libGLESv2/ResourceManager.h"
michael@0: 
michael@0: #include "libGLESv2/Buffer.h"
michael@0: #include "libGLESv2/Program.h"
michael@0: #include "libGLESv2/Renderbuffer.h"
michael@0: #include "libGLESv2/Shader.h"
michael@0: #include "libGLESv2/Texture.h"
michael@0: 
michael@0: namespace gl
michael@0: {
michael@0: ResourceManager::ResourceManager(rx::Renderer *renderer)
michael@0: {
michael@0:     mRefCount = 1;
michael@0:     mRenderer = renderer;
michael@0: }
michael@0: 
michael@0: ResourceManager::~ResourceManager()
michael@0: {
michael@0:     while (!mBufferMap.empty())
michael@0:     {
michael@0:         deleteBuffer(mBufferMap.begin()->first);
michael@0:     }
michael@0: 
michael@0:     while (!mProgramMap.empty())
michael@0:     {
michael@0:         deleteProgram(mProgramMap.begin()->first);
michael@0:     }
michael@0: 
michael@0:     while (!mShaderMap.empty())
michael@0:     {
michael@0:         deleteShader(mShaderMap.begin()->first);
michael@0:     }
michael@0: 
michael@0:     while (!mRenderbufferMap.empty())
michael@0:     {
michael@0:         deleteRenderbuffer(mRenderbufferMap.begin()->first);
michael@0:     }
michael@0: 
michael@0:     while (!mTextureMap.empty())
michael@0:     {
michael@0:         deleteTexture(mTextureMap.begin()->first);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::addRef()
michael@0: {
michael@0:     mRefCount++;
michael@0: }
michael@0: 
michael@0: void ResourceManager::release()
michael@0: {
michael@0:     if (--mRefCount == 0)
michael@0:     {
michael@0:         delete this;
michael@0:     }
michael@0: }
michael@0: 
michael@0: // Returns an unused buffer name
michael@0: GLuint ResourceManager::createBuffer()
michael@0: {
michael@0:     GLuint handle = mBufferHandleAllocator.allocate();
michael@0: 
michael@0:     mBufferMap[handle] = NULL;
michael@0: 
michael@0:     return handle;
michael@0: }
michael@0: 
michael@0: // Returns an unused shader/program name
michael@0: GLuint ResourceManager::createShader(GLenum type)
michael@0: {
michael@0:     GLuint handle = mProgramShaderHandleAllocator.allocate();
michael@0: 
michael@0:     if (type == GL_VERTEX_SHADER)
michael@0:     {
michael@0:         mShaderMap[handle] = new VertexShader(this, mRenderer, handle);
michael@0:     }
michael@0:     else if (type == GL_FRAGMENT_SHADER)
michael@0:     {
michael@0:         mShaderMap[handle] = new FragmentShader(this, mRenderer, handle);
michael@0:     }
michael@0:     else UNREACHABLE();
michael@0: 
michael@0:     return handle;
michael@0: }
michael@0: 
michael@0: // Returns an unused program/shader name
michael@0: GLuint ResourceManager::createProgram()
michael@0: {
michael@0:     GLuint handle = mProgramShaderHandleAllocator.allocate();
michael@0: 
michael@0:     mProgramMap[handle] = new Program(mRenderer, this, handle);
michael@0: 
michael@0:     return handle;
michael@0: }
michael@0: 
michael@0: // Returns an unused texture name
michael@0: GLuint ResourceManager::createTexture()
michael@0: {
michael@0:     GLuint handle = mTextureHandleAllocator.allocate();
michael@0: 
michael@0:     mTextureMap[handle] = NULL;
michael@0: 
michael@0:     return handle;
michael@0: }
michael@0: 
michael@0: // Returns an unused renderbuffer name
michael@0: GLuint ResourceManager::createRenderbuffer()
michael@0: {
michael@0:     GLuint handle = mRenderbufferHandleAllocator.allocate();
michael@0: 
michael@0:     mRenderbufferMap[handle] = NULL;
michael@0: 
michael@0:     return handle;
michael@0: }
michael@0: 
michael@0: void ResourceManager::deleteBuffer(GLuint buffer)
michael@0: {
michael@0:     BufferMap::iterator bufferObject = mBufferMap.find(buffer);
michael@0: 
michael@0:     if (bufferObject != mBufferMap.end())
michael@0:     {
michael@0:         mBufferHandleAllocator.release(bufferObject->first);
michael@0:         if (bufferObject->second) bufferObject->second->release();
michael@0:         mBufferMap.erase(bufferObject);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::deleteShader(GLuint shader)
michael@0: {
michael@0:     ShaderMap::iterator shaderObject = mShaderMap.find(shader);
michael@0: 
michael@0:     if (shaderObject != mShaderMap.end())
michael@0:     {
michael@0:         if (shaderObject->second->getRefCount() == 0)
michael@0:         {
michael@0:             mProgramShaderHandleAllocator.release(shaderObject->first);
michael@0:             delete shaderObject->second;
michael@0:             mShaderMap.erase(shaderObject);
michael@0:         }
michael@0:         else
michael@0:         {
michael@0:             shaderObject->second->flagForDeletion();
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::deleteProgram(GLuint program)
michael@0: {
michael@0:     ProgramMap::iterator programObject = mProgramMap.find(program);
michael@0: 
michael@0:     if (programObject != mProgramMap.end())
michael@0:     {
michael@0:         if (programObject->second->getRefCount() == 0)
michael@0:         {
michael@0:             mProgramShaderHandleAllocator.release(programObject->first);
michael@0:             delete programObject->second;
michael@0:             mProgramMap.erase(programObject);
michael@0:         }
michael@0:         else
michael@0:         { 
michael@0:             programObject->second->flagForDeletion();
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::deleteTexture(GLuint texture)
michael@0: {
michael@0:     TextureMap::iterator textureObject = mTextureMap.find(texture);
michael@0: 
michael@0:     if (textureObject != mTextureMap.end())
michael@0:     {
michael@0:         mTextureHandleAllocator.release(textureObject->first);
michael@0:         if (textureObject->second) textureObject->second->release();
michael@0:         mTextureMap.erase(textureObject);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::deleteRenderbuffer(GLuint renderbuffer)
michael@0: {
michael@0:     RenderbufferMap::iterator renderbufferObject = mRenderbufferMap.find(renderbuffer);
michael@0: 
michael@0:     if (renderbufferObject != mRenderbufferMap.end())
michael@0:     {
michael@0:         mRenderbufferHandleAllocator.release(renderbufferObject->first);
michael@0:         if (renderbufferObject->second) renderbufferObject->second->release();
michael@0:         mRenderbufferMap.erase(renderbufferObject);
michael@0:     }
michael@0: }
michael@0: 
michael@0: Buffer *ResourceManager::getBuffer(unsigned int handle)
michael@0: {
michael@0:     BufferMap::iterator buffer = mBufferMap.find(handle);
michael@0: 
michael@0:     if (buffer == mBufferMap.end())
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         return buffer->second;
michael@0:     }
michael@0: }
michael@0: 
michael@0: Shader *ResourceManager::getShader(unsigned int handle)
michael@0: {
michael@0:     ShaderMap::iterator shader = mShaderMap.find(handle);
michael@0: 
michael@0:     if (shader == mShaderMap.end())
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         return shader->second;
michael@0:     }
michael@0: }
michael@0: 
michael@0: Texture *ResourceManager::getTexture(unsigned int handle)
michael@0: {
michael@0:     if (handle == 0) return NULL;
michael@0: 
michael@0:     TextureMap::iterator texture = mTextureMap.find(handle);
michael@0: 
michael@0:     if (texture == mTextureMap.end())
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         return texture->second;
michael@0:     }
michael@0: }
michael@0: 
michael@0: Program *ResourceManager::getProgram(unsigned int handle)
michael@0: {
michael@0:     ProgramMap::iterator program = mProgramMap.find(handle);
michael@0: 
michael@0:     if (program == mProgramMap.end())
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         return program->second;
michael@0:     }
michael@0: }
michael@0: 
michael@0: Renderbuffer *ResourceManager::getRenderbuffer(unsigned int handle)
michael@0: {
michael@0:     RenderbufferMap::iterator renderbuffer = mRenderbufferMap.find(handle);
michael@0: 
michael@0:     if (renderbuffer == mRenderbufferMap.end())
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         return renderbuffer->second;
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::setRenderbuffer(GLuint handle, Renderbuffer *buffer)
michael@0: {
michael@0:     mRenderbufferMap[handle] = buffer;
michael@0: }
michael@0: 
michael@0: void ResourceManager::checkBufferAllocation(unsigned int buffer)
michael@0: {
michael@0:     if (buffer != 0 && !getBuffer(buffer))
michael@0:     {
michael@0:         Buffer *bufferObject = new Buffer(mRenderer, buffer);
michael@0:         mBufferMap[buffer] = bufferObject;
michael@0:         bufferObject->addRef();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::checkTextureAllocation(GLuint texture, TextureType type)
michael@0: {
michael@0:     if (!getTexture(texture) && texture != 0)
michael@0:     {
michael@0:         Texture *textureObject;
michael@0: 
michael@0:         if (type == TEXTURE_2D)
michael@0:         {
michael@0:             textureObject = new Texture2D(mRenderer, texture);
michael@0:         }
michael@0:         else if (type == TEXTURE_CUBE)
michael@0:         {
michael@0:             textureObject = new TextureCubeMap(mRenderer, texture);
michael@0:         }
michael@0:         else
michael@0:         {
michael@0:             UNREACHABLE();
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         mTextureMap[texture] = textureObject;
michael@0:         textureObject->addRef();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void ResourceManager::checkRenderbufferAllocation(GLuint renderbuffer)
michael@0: {
michael@0:     if (renderbuffer != 0 && !getRenderbuffer(renderbuffer))
michael@0:     {
michael@0:         Renderbuffer *renderbufferObject = new Renderbuffer(mRenderer, renderbuffer, new Colorbuffer(mRenderer, 0, 0, GL_RGBA4, 0));
michael@0:         mRenderbufferMap[renderbuffer] = renderbufferObject;
michael@0:         renderbufferObject->addRef();
michael@0:     }
michael@0: }
michael@0: 
michael@0: }