////  FramebufferCache.cpp//  interface/src/renderer////  Created by Andrzej Kapolka on 8/6/13.//  Copyright 2013 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "FramebufferCache.h" #include <mutex> #include <glm/glm.hpp> #include <QMap>#include <QQueue>#include <gpu/Batch.h>#include "RenderUtilsLogging.h" static QQueue<gpu::FramebufferPointer> _cachedFramebuffers; FramebufferCache::FramebufferCache() {} FramebufferCache::~FramebufferCache() {    _cachedFramebuffers.clear();} void FramebufferCache::setFrameBufferSize(QSize frameBufferSize) {    //If the size changed, we need to delete our FBOs    if (_frameBufferSize != frameBufferSize) {        _frameBufferSize = frameBufferSize;        _selfieFramebuffer.reset();        _cachedFramebuffers.clear();    }} void FramebufferCache::createPrimaryFramebuffer() {    auto colorFormat = gpu::Element::COLOR_SRGBA_32;    auto width = _frameBufferSize.width();    auto height = _frameBufferSize.height();     auto defaultSampler = gpu::Sampler(gpu::Sampler::FILTER_MIN_MAG_POINT);     _selfieFramebuffer = gpu::FramebufferPointer(gpu::Framebuffer::create());    auto tex = gpu::TexturePointer(gpu::Texture::create2D(colorFormat, width * 0.5, height * 0.5, defaultSampler));    _selfieFramebuffer->setRenderBuffer(0, tex);     auto smoothSampler = gpu::Sampler(gpu::Sampler::FILTER_MIN_MAG_MIP_LINEAR);}  gpu::FramebufferPointer FramebufferCache::getFramebuffer() {    if (_cachedFramebuffers.isEmpty()) {        _cachedFramebuffers.push_back(gpu::FramebufferPointer(gpu::Framebuffer::create(gpu::Element::COLOR_SRGBA_32, _frameBufferSize.width(), _frameBufferSize.height())));    }    gpu::FramebufferPointer result = _cachedFramebuffers.front();    _cachedFramebuffers.pop_front();    return result;} void FramebufferCache::releaseFramebuffer(const gpu::FramebufferPointer& framebuffer) {    if (QSize(framebuffer->getSize().x, framebuffer->getSize().y) == _frameBufferSize) {        _cachedFramebuffers.push_back(framebuffer);    }} gpu::FramebufferPointer FramebufferCache::getSelfieFramebuffer() {    if (!_selfieFramebuffer) {        createPrimaryFramebuffer();    }    return _selfieFramebuffer;}