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Areloch
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Engine/source/environment/VolumetricFogRTManager.cpp
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299
Engine/source/environment/VolumetricFogRTManager.cpp
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//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// Volumetric Fog Rendertarget Manager
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//
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// Creates and maintains one set of rendertargets to be used by every
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// VolumetricFog object in the scene.
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//
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// Will be loaded at startup end removed when ending game.
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//
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//-----------------------------------------------------------------------------
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#include "VolumetricFogRTManager.h"
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#include "core/module.h"
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#include "scene/sceneManager.h"
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#include "windowManager/platformWindowMgr.h"
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#include "console/engineAPI.h"
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#include "gui/core/guiCanvas.h"
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MODULE_BEGIN(VolumetricFogRTManager)
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MODULE_INIT_AFTER(Scene)
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MODULE_SHUTDOWN_BEFORE(Scene)
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MODULE_INIT
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{
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gVolumetricFogRTManager = new VolumetricFogRTManager;
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gClientSceneGraph->addObjectToScene(gVolumetricFogRTManager);
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}
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MODULE_SHUTDOWN
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{
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gClientSceneGraph->removeObjectFromScene(gVolumetricFogRTManager);
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SAFE_DELETE(gVolumetricFogRTManager);
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}
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MODULE_END;
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ConsoleDocClass( VolumetricFogRTManager,
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"@brief Creates and maintains one set of rendertargets to be used by every\n"
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"VolumetricFog object in the scene.\n\n"
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"Will be loaded at startup end removed when ending game.\n\n"
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"Methods:\n"
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" get() returns the currently loaded VolumetricFogRTManager, also accessible\n"
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" through VFRTM define.\n"
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" Init() Initializes the rendertargets, called when a VolumetricFog object is\n"
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" added to the scene.\n"
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" isInitialed() returns true if Rendertargets are present, false if not, then\n"
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" Init() should be called to create the rendertargets.\n"
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" setQuality(U32 Quality) Normally a rendertarget has the same size as the view,\n"
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" with this method you can scale down the size of it.\n"
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" Be aware that scaling down will introduce renderartefacts.\n"
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"@ingroup Atmosphere"
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);
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VolumetricFogRTMResizeSignal VolumetricFogRTManager::smVolumetricFogRTMResizeSignal;
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VolumetricFogRTManager *gVolumetricFogRTManager = NULL;
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S32 VolumetricFogRTManager::mTargetScale = 1;
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IMPLEMENT_CONOBJECT(VolumetricFogRTManager);
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VolumetricFogRTManager::VolumetricFogRTManager()
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{
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setGlobalBounds();
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mTypeMask |= EnvironmentObjectType;
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mNetFlags.set(IsGhost);
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mIsInitialized = false;
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mNumFogObjects = 0;
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}
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VolumetricFogRTManager::~VolumetricFogRTManager()
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{
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if (mFrontTarget.isRegistered())
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mFrontTarget.unregister();
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if (mDepthTarget.isRegistered())
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mDepthTarget.unregister();
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if (mDepthBuffer.isValid())
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mDepthBuffer->kill();
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if (mFrontBuffer.isValid())
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mFrontBuffer->kill();
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}
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void VolumetricFogRTManager::onSceneRemove()
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{
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if (mIsInitialized)
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mPlatformWindow->getScreenResChangeSignal().remove(this, &VolumetricFogRTManager::ResizeRT);
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}
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void VolumetricFogRTManager::onRemove()
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{
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removeFromScene();
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Parent::onRemove();
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}
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void VolumetricFogRTManager::consoleInit()
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{
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Con::addVariable("$pref::VolumetricFog::Quality", TypeS32, &mTargetScale,
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"The scale of the rendertargets.\n"
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"@ingroup Rendering\n");
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}
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bool VolumetricFogRTManager::Init()
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{
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if (mIsInitialized)
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{
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Con::errorf("VolumetricFogRTManager allready initialized!!");
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return true;
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}
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GuiCanvas* cv = dynamic_cast<GuiCanvas*>(Sim::findObject("Canvas"));
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if (cv == NULL)
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{
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Con::errorf("VolumetricFogRTManager::Init() - Canvas not found!!");
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return false;
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}
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mPlatformWindow = cv->getPlatformWindow();
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mPlatformWindow->getScreenResChangeSignal().notify(this,&VolumetricFogRTManager::ResizeRT);
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if (mTargetScale < 1)
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mTargetScale = 1;
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mWidth = mFloor(mPlatformWindow->getClientExtent().x / mTargetScale);
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mHeight = mPlatformWindow->getClientExtent().y;
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mFullScreen = mPlatformWindow->isFullscreen();
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if (!mFullScreen)
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mHeight -= 20;//subtract caption bar from rendertarget size.
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mHeight = mFloor(mHeight / mTargetScale);
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mDepthBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
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&GFXDefaultRenderTargetProfile, avar("%s() - mDepthBuffer (line %d)", __FUNCTION__, __LINE__));
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if (!mDepthBuffer.isValid())
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{
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Con::errorf("VolumetricFogRTManager Fatal Error: Unable to create Depthbuffer");
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return false;
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}
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if (!mDepthTarget.registerWithName("volfogdepth"))
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{
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Con::errorf("VolumetricFogRTManager Fatal Error : Unable to register Depthbuffer");
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return false;
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}
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mDepthTarget.setTexture(mDepthBuffer);
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mFrontBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
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&GFXDefaultRenderTargetProfile, avar("%s() - mFrontBuffer (line %d)", __FUNCTION__, __LINE__));
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if (!mFrontBuffer.isValid())
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{
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Con::errorf("VolumetricFogRTManager Fatal Error: Unable to create front buffer");
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return false;
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}
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if (!mFrontTarget.registerWithName("volfogfront"))
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{
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Con::errorf("VolumetricFogRTManager Fatal Error : Unable to register Frontbuffer");
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return false;
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}
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mFrontTarget.setTexture(mFrontBuffer);
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Con::setVariable("$VolumetricFog::density", "0.0");
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mIsInitialized = true;
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return true;
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}
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U32 VolumetricFogRTManager::IncFogObjects()
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{
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mNumFogObjects++;
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return mNumFogObjects;
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}
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U32 VolumetricFogRTManager::DecFogObjects()
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{
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if (mNumFogObjects > 0)
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mNumFogObjects--;
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return mNumFogObjects;
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}
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void VolumetricFogRTManager::ResizeRT(PlatformWindow* win,bool resize)
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{
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mFogHasAnswered = 0;
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smVolumetricFogRTMResizeSignal.trigger(this, true);
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}
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void VolumetricFogRTManager::FogAnswered()
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{
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mFogHasAnswered++;
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if (mFogHasAnswered == mNumFogObjects)
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{
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if (Resize())
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smVolumetricFogRTMResizeSignal.trigger(this, false);
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else
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Con::errorf("VolumetricFogRTManager::FogAnswered - Error resizing rendertargets!");
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}
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}
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bool VolumetricFogRTManager::Resize()
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{
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if (mTargetScale < 1)
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mTargetScale = 1;
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mWidth = mFloor(mPlatformWindow->getClientExtent().x / mTargetScale);
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mHeight = mPlatformWindow->getClientExtent().y;
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if (!mPlatformWindow->isFullscreen())
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mHeight -= 20;//subtract caption bar from rendertarget size.
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mHeight = mFloor(mHeight / mTargetScale);
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if (mWidth < 16 || mHeight < 16)
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return false;
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if (mFrontTarget.isRegistered())
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mFrontTarget.setTexture(NULL);
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if (mDepthTarget.isRegistered())
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mDepthTarget.setTexture(NULL);
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if (mDepthBuffer.isValid())
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mDepthBuffer->kill();
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if (mFrontBuffer.isValid())
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mFrontBuffer->kill();
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mFrontBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
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&GFXDefaultRenderTargetProfile, avar("%s() - mFrontBuffer (line %d)", __FUNCTION__, __LINE__));
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if (!mFrontBuffer.isValid())
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{
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Con::errorf("VolumetricFogRTManager::Resize() Fatal Error: Unable to create front buffer");
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return false;
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}
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mFrontTarget.setTexture(mFrontBuffer);
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mDepthBuffer = GFXTexHandle(mWidth, mHeight, GFXFormatR32F,
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&GFXDefaultRenderTargetProfile, avar("%s() - mDepthBuffer (line %d)", __FUNCTION__, __LINE__));
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if (!mDepthBuffer.isValid())
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{
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Con::errorf("VolumetricFogRTManager::Resize() Fatal Error: Unable to create Depthbuffer");
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return false;
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}
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mDepthTarget.setTexture(mDepthBuffer);
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return true;
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}
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S32 VolumetricFogRTManager::setQuality(U32 Quality)
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{
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if (!mIsInitialized)
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return (mTargetScale = Quality);
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if (Quality < 1)
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Quality = 1;
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if (Quality == mTargetScale)
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return mTargetScale;
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mTargetScale = Quality;
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mFogHasAnswered = 0;
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smVolumetricFogRTMResizeSignal.trigger(this, true);
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return mTargetScale;
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}
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VolumetricFogRTManager* VolumetricFogRTManager::get()
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{
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return gVolumetricFogRTManager;
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}
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DefineConsoleFunction(SetFogVolumeQuality, S32, (U32 new_quality), ,
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"@brief Resizes the rendertargets of the Volumetric Fog object.\n"
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"@params new_quality new quality for the rendertargets 1 = full size, 2 = halfsize, 3 = 1/3, 4 = 1/4 ...")
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{
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if (VFRTM == NULL)
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return -1;
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return VFRTM->setQuality(new_quality);
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}
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