Showing the changes to interface/src/graphics/GraphicsEngine.cpp (1 of 15 files). Show all
Unified · Split
| @@ -0,0 +1,167 @@ | ||
| 1 | +// | |
| 2 | +// GraphicsEngine.cpp | |
| 3 | +// | |
| 4 | +// Created by Sam Gateau on 29/6/2018. | |
| 5 | +// Copyright 2018 High Fidelity, Inc. | |
| 6 | +// | |
| 7 | +// Distributed under the Apache License, Version 2.0. | |
| 8 | +// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html | |
| 9 | +// | |
| 10 | +#include "GraphicsEngine.h" | |
| 11 | + | |
| 12 | +#include <shared/GlobalAppProperties.h> | |
| 13 | + | |
| 14 | +#include "WorldBox.h" | |
| 15 | +#include "LODManager.h" | |
| 16 | + | |
| 17 | +#include <GeometryCache.h> | |
| 18 | +#include <TextureCache.h> | |
| 19 | +#include <UpdateSceneTask.h> | |
| 20 | +#include <RenderViewTask.h> | |
| 21 | +#include <SecondaryCamera.h> | |
| 22 | + | |
| 23 | +#include "RenderEventHandler.h" | |
| 24 | + | |
| 25 | +#include <gpu/Batch.h> | |
| 26 | +#include <gpu/Context.h> | |
| 27 | +#include <gpu/gl/GLBackend.h> | |
| 28 | + | |
| 29 | +GraphicsEngine::GraphicsEngine() { | |
| 30 | +} | |
| 31 | + | |
| 32 | +GraphicsEngine::~GraphicsEngine() { | |
| 33 | +} | |
| 34 | + | |
| 35 | +void GraphicsEngine::initializeGPU(GLWidget* glwidget) { | |
| 36 | + | |
| 37 | + // Build an offscreen GL context for the main thread. | |
| 38 | + _offscreenContext = new OffscreenGLCanvas(); | |
| 39 | + _offscreenContext->setObjectName("MainThreadContext"); | |
| 40 | + _offscreenContext->create(glwidget->qglContext()); | |
| 41 | + if (!_offscreenContext->makeCurrent()) { | |
| 42 | + qFatal("Unable to make offscreen context current"); | |
| 43 | + } | |
| 44 | + _offscreenContext->doneCurrent(); | |
| 45 | + _offscreenContext->setThreadContext(); | |
| 46 | + | |
| 47 | + _renderEventHandler = new RenderEventHandler(glwidget->qglContext()); | |
| 48 | + if (!_offscreenContext->makeCurrent()) { | |
| 49 | + qFatal("Unable to make offscreen context current"); | |
| 50 | + } | |
| 51 | + | |
| 52 | + // Requires the window context, because that's what's used in the actual rendering | |
| 53 | + // and the GPU backend will make things like the VAO which cannot be shared across | |
| 54 | + // contexts | |
| 55 | + glwidget->makeCurrent(); | |
| 56 | + gpu::Context::init<gpu::gl::GLBackend>(); | |
| 57 | + qApp->setProperty(hifi::properties::gl::MAKE_PROGRAM_CALLBACK, | |
| 58 | + QVariant::fromValue((void*)(&gpu::gl::GLBackend::makeProgram))); | |
| 59 | + glwidget->makeCurrent(); | |
| 60 | + _gpuContext = std::make_shared<gpu::Context>(); | |
| 61 | + | |
| 62 | + DependencyManager::get<TextureCache>()->setGPUContext(_gpuContext); | |
| 63 | + | |
| 64 | + // Restore the default main thread context | |
| 65 | + _offscreenContext->makeCurrent(); | |
| 66 | +} | |
| 67 | + | |
| 68 | +void GraphicsEngine::initializeRender(bool disableDeferred) { | |
| 69 | + | |
| 70 | + // Set up the render engine | |
| 71 | + render::CullFunctor cullFunctor = LODManager::shouldRender; | |
| 72 | + _renderEngine->addJob<UpdateSceneTask>("UpdateScene"); | |
| 73 | +#ifndef Q_OS_ANDROID | |
| 74 | + _renderEngine->addJob<SecondaryCameraRenderTask>("SecondaryCameraJob", cullFunctor, !disableDeferred); | |
| 75 | +#endif | |
| 76 | + _renderEngine->addJob<RenderViewTask>("RenderMainView", cullFunctor, !disableDeferred, render::ItemKey::TAG_BITS_0, render::ItemKey::TAG_BITS_0); | |
| 77 | + _renderEngine->load(); | |
| 78 | + _renderEngine->registerScene(_renderScene); | |
| 79 | + | |
| 80 | + // Now that OpenGL is initialized, we are sure we have a valid context and can create the various pipeline shaders with success. | |
| 81 | + DependencyManager::get<GeometryCache>()->initializeShapePipelines(); | |
| 82 | + | |
| 83 | + | |
| 84 | +} | |
| 85 | + | |
| 86 | +void GraphicsEngine::startup() { | |
| 87 | + | |
| 88 | + | |
| 89 | + static_cast<RenderEventHandler*>(_renderEventHandler)->resumeThread(); | |
| 90 | +} | |
| 91 | + | |
| 92 | +void GraphicsEngine::shutdown() { | |
| 93 | + // The cleanup process enqueues the transactions but does not process them. Calling this here will force the actual | |
| 94 | + // removal of the items. | |
| 95 | + // See https://highfidelity.fogbugz.com/f/cases/5328 | |
| 96 | + _renderScene->enqueueFrame(); // flush all the transactions | |
| 97 | + _renderScene->processTransactionQueue(); // process and apply deletions | |
| 98 | + | |
| 99 | + _gpuContext->shutdown(); | |
| 100 | + | |
| 101 | + | |
| 102 | + // shutdown render engine | |
| 103 | + _renderScene = nullptr; | |
| 104 | + _renderEngine = nullptr; | |
| 105 | +} | |
| 106 | + | |
| 107 | + | |
| 108 | +void GraphicsEngine::render_runRenderFrame(RenderArgs* renderArgs) { | |
| 109 | + PROFILE_RANGE(render, __FUNCTION__); | |
| 110 | + PerformanceTimer perfTimer("render"); | |
| 111 | +// PerformanceWarning warn(Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings), "Application::runRenderFrame()"); | |
| 112 | + | |
| 113 | + // The pending changes collecting the changes here | |
| 114 | + render::Transaction transaction; | |
| 115 | + | |
| 116 | + // this is not in use at all anymore | |
| 117 | + //if (DependencyManager::get<SceneScriptingInterface>()->shouldRenderEntities()) { | |
| 118 | + // render models... | |
| 119 | + // PerformanceTimer perfTimer("entities"); | |
| 120 | + // PerformanceWarning warn(Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings), | |
| 121 | + // "Application::runRenderFrame() ... entities..."); | |
| 122 | + | |
| 123 | + //RenderArgs::DebugFlags renderDebugFlags = RenderArgs::RENDER_DEBUG_NONE; | |
| 124 | + | |
| 125 | + //renderArgs->_debugFlags = renderDebugFlags; | |
| 126 | + //} | |
| 127 | + | |
| 128 | + // Make sure the WorldBox is in the scene | |
| 129 | + // For the record, this one RenderItem is the first one we created and added to the scene. | |
| 130 | + // We could move that code elsewhere but you know... | |
| 131 | + if (!render::Item::isValidID(WorldBoxRenderData::_item)) { | |
| 132 | + auto worldBoxRenderData = std::make_shared<WorldBoxRenderData>(); | |
| 133 | + auto worldBoxRenderPayload = std::make_shared<WorldBoxRenderData::Payload>(worldBoxRenderData); | |
| 134 | + | |
| 135 | + WorldBoxRenderData::_item = _renderScene->allocateID(); | |
| 136 | + | |
| 137 | + transaction.resetItem(WorldBoxRenderData::_item, worldBoxRenderPayload); | |
| 138 | + _renderScene->enqueueTransaction(transaction); | |
| 139 | + } | |
| 140 | + | |
| 141 | + { | |
| 142 | + // PerformanceTimer perfTimer("EngineRun"); | |
| 143 | + _renderEngine->getRenderContext()->args = renderArgs; | |
| 144 | + _renderEngine->run(); | |
| 145 | + } | |
| 146 | +} | |
| 147 | + | |
| 148 | +static const unsigned int THROTTLED_SIM_FRAMERATE = 15; | |
| 149 | +static const int THROTTLED_SIM_FRAME_PERIOD_MS = MSECS_PER_SECOND / THROTTLED_SIM_FRAMERATE; | |
| 150 | + | |
| 151 | + | |
| 152 | + | |
| 153 | + | |
| 154 | +bool GraphicsEngine::shouldPaint() const { | |
| 155 | + | |
| 156 | + // Throttle if requested | |
| 157 | + if ((static_cast<RenderEventHandler*>(_renderEventHandler)->_lastTimeRendered.elapsed() < THROTTLED_SIM_FRAME_PERIOD_MS)) { | |
| 158 | + return false; | |
| 159 | + } | |
| 160 | + | |
| 161 | + return true; | |
| 162 | +} | |
| 163 | + | |
| 164 | +bool GraphicsEngine::checkPendingRenderEvent() { | |
| 165 | + bool expected = false; | |
| 166 | + return (_renderEventHandler && static_cast<RenderEventHandler*>(_renderEventHandler)->_pendingRenderEvent.compare_exchange_strong(expected, true)); | |
| 167 | +} | |