void RenderedTexture::renderTextures()
{
//Set up RTT texture
Ogre::TexturePtr renderTexture;
if (renderTexture.isNull()) {
renderTexture = Ogre::TextureManager::getSingleton().createManual(
getUniqueID("RenderedEntityMaterial"), "EntityRenderer",
Ogre::TEX_TYPE_2D, textureSize, textureSize, 0,
Ogre::PF_A8R8G8B8, Ogre::TU_RENDERTARGET, 0);
}
renderTexture->setNumMipmaps(0);
//Set up render target
Ogre::RenderTexture* renderTarget = renderTexture->getBuffer()->getRenderTarget();
renderTarget->setAutoUpdated(false);
//Set up camera
Ogre::SceneNode* camNode = sceneMgr->getSceneNode("EntityRenderer::cameraNode");
Ogre::Camera* renderCamera = sceneMgr->createCamera(getUniqueID("EntityRendererCam"));
camNode->attachObject(renderCamera);
renderCamera->setLodBias(1000.0f);
Ogre::Viewport* renderViewport = renderTarget->addViewport(renderCamera);
renderViewport->setOverlaysEnabled(false);
renderViewport->setClearEveryFrame(true);
renderViewport->setShadowsEnabled(false);
renderViewport->setBackgroundColour(Ogre::ColourValue(0.0f, 0.0f, 0.0f, 0.0f));
//Set up scene node
Ogre::SceneNode* node = sceneMgr->getSceneNode("EntityRenderer::renderNode");
Ogre::SceneNode* oldSceneNode = entity->getParentSceneNode();
if (oldSceneNode)
oldSceneNode->detachObject(entity);
node->attachObject(entity);
node->setPosition(-entityCenter);
//Set up camera FOV
const Ogre::Real objDist = entityRadius * 100;
const Ogre::Real nearDist = objDist - (entityRadius + 1);
const Ogre::Real farDist = objDist + (entityRadius + 1);
renderCamera->setAspectRatio(1.0f);
renderCamera->setFOVy(Ogre::Math::ATan(2.0 * entityRadius / objDist));
renderCamera->setNearClipDistance(nearDist);
renderCamera->setFarClipDistance(farDist);
//Disable mipmapping (without this, masked textures look bad)
Ogre::MaterialManager* mm = Ogre::MaterialManager::getSingletonPtr();
Ogre::FilterOptions oldMinFilter = mm->getDefaultTextureFiltering(Ogre::FT_MIN);
Ogre::FilterOptions oldMagFilter = mm->getDefaultTextureFiltering(Ogre::FT_MAG);
Ogre::FilterOptions oldMipFilter = mm->getDefaultTextureFiltering(Ogre::FT_MIP);
mm->setDefaultTextureFiltering(Ogre::FO_POINT, Ogre::FO_LINEAR,Ogre:: FO_NONE);
//Disable fog
Ogre::FogMode oldFogMode = sceneMgr->getFogMode();
Ogre::ColourValue oldFogColor = sceneMgr->getFogColour();
Ogre::Real oldFogDensity = sceneMgr->getFogDensity();
Ogre::Real oldFogStart = sceneMgr->getFogStart();
Ogre::Real oldFogEnd = sceneMgr->getFogEnd();
sceneMgr->setFog(Ogre::FOG_NONE);
// Get current status of the queue mode
Ogre::SceneManager::SpecialCaseRenderQueueMode OldSpecialCaseRenderQueueMode =
sceneMgr->getSpecialCaseRenderQueueMode();
//Only render the entity
sceneMgr->setSpecialCaseRenderQueueMode(Ogre::SceneManager::SCRQM_INCLUDE);
sceneMgr->addSpecialCaseRenderQueue(renderQueueGroup);
Ogre::uint8 oldRenderQueueGroup = entity->getRenderQueueGroup();
entity->setRenderQueueGroup(renderQueueGroup);
bool oldVisible = entity->getVisible();
entity->setVisible(true);
float oldMaxDistance = entity->getRenderingDistance();
entity->setRenderingDistance(0);
//Calculate the filename hash used to uniquely identity this render
std::string strKey = entityKey;
char key[32] = {0};
Ogre::uint32 i = 0;
for (std::string::const_iterator it = entityKey.begin(); it != entityKey.end(); ++it) {
key[i] ^= *it;
i = (i+1) % sizeof(key);
}
for (i = 0; i < sizeof(key); ++i)
key[i] = (key[i] % 26) + 'A';
Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
GetUserDir().string(), "FileSystem", "BinFolder");
std::string fileNamePNG =
"Rendered." + std::string(key, sizeof(key)) + '.' +
Ogre::StringConverter::toString(textureSize) + ".png";
//Attempt to load the pre-render file if allowed
bool needsRegen = false;
if (!needsRegen) {
try{
texture = Ogre::TextureManager::getSingleton().load(
fileNamePNG, "BinFolder", Ogre::TEX_TYPE_2D, 0);
} catch (...) {
needsRegen = true;
}
}
if (needsRegen) {
//If this has not been pre-rendered, do so now
//Position camera
camNode->setPosition(0, 0, 0);
// TODO camNode->setOrientation(Quaternion(yaw, Vector3::UNIT_Y) * Quaternion(-pitch, Vector3::UNIT_X));
camNode->translate(Ogre::Vector3(0, 0, objDist), Ogre::Node::TS_LOCAL);
renderTarget->update();
//Save RTT to file
renderTarget->writeContentsToFile((GetUserDir() / fileNamePNG).string());
//Load the render into the appropriate texture view
texture = Ogre::TextureManager::getSingleton().load(fileNamePNG, "BinFolder", Ogre::TEX_TYPE_2D, 0);
ggTexture = ClientUI::GetTexture(GetUserDir() / fileNamePNG);
}
entity->setVisible(oldVisible);
entity->setRenderQueueGroup(oldRenderQueueGroup);
entity->setRenderingDistance(oldMaxDistance);
sceneMgr->removeSpecialCaseRenderQueue(renderQueueGroup);
// Restore original state
sceneMgr->setSpecialCaseRenderQueueMode(OldSpecialCaseRenderQueueMode);
//Re-enable mipmapping
mm->setDefaultTextureFiltering(oldMinFilter, oldMagFilter, oldMipFilter);
//Re-enable fog
sceneMgr->setFog(oldFogMode, oldFogColor, oldFogDensity, oldFogStart, oldFogEnd);
//Delete camera
renderTarget->removeViewport(0);
renderCamera->getSceneManager()->destroyCamera(renderCamera);
//Delete scene node
node->detachAllObjects();
if (oldSceneNode)
oldSceneNode->attachObject(entity);
//Delete RTT texture
assert(!renderTexture.isNull());
std::string texName2(renderTexture->getName());
renderTexture.setNull();
if (Ogre::TextureManager::getSingletonPtr())
Ogre::TextureManager::getSingleton().remove(texName2);
}
//Ogre::Camera::getSceneManager() const
SceneManagerHandle camera_get_scenemanager(CameraHandle handle)
{
Ogre::Camera* camera = static_cast<Ogre::Camera*>(handle);
return static_cast<SceneManagerHandle>(camera->getSceneManager());
}