OgreRTTexture::OgreRTTexture(Ogre::TexturePtr _texture) :
mViewport(nullptr),
mSaveViewport(nullptr),
mTexture(_texture)
{
mProjectMatrix = Ogre::Matrix4::IDENTITY;
Ogre::Root* root = Ogre::Root::getSingletonPtr();
if (root != nullptr)
{
Ogre::RenderSystem* system = root->getRenderSystem();
if (system != nullptr)
{
size_t width = mTexture->getWidth();
size_t height = mTexture->getHeight();
mRenderTargetInfo.maximumDepth = system->getMaximumDepthInputValue();
mRenderTargetInfo.hOffset = system->getHorizontalTexelOffset() / float(width);
mRenderTargetInfo.vOffset = system->getVerticalTexelOffset() / float(height);
mRenderTargetInfo.aspectCoef = float(height) / float(width);
mRenderTargetInfo.pixScaleX = 1.0f / float(width);
mRenderTargetInfo.pixScaleY = 1.0f / float(height);
}
if (mTexture->getBuffer()->getRenderTarget()->requiresTextureFlipping())
{
mProjectMatrix[1][0] = -mProjectMatrix[1][0];
mProjectMatrix[1][1] = -mProjectMatrix[1][1];
mProjectMatrix[1][2] = -mProjectMatrix[1][2];
mProjectMatrix[1][3] = -mProjectMatrix[1][3];
}
}
}
void RenderedCompassImpl::_setCompass(Compass* compass)
{
Ogre::MaterialPtr originalMaterial = static_cast<Ogre::MaterialPtr>(Ogre::MaterialManager::getSingleton().getByName(mMaterialName));
if (originalMaterial) {
originalMaterial->load();
mCompassMaterial = originalMaterial->clone(OgreInfo::createUniqueResourceName(originalMaterial->getName()));
if (Ogre::Technique* tech = mCompassMaterial->getBestTechnique()) {
Ogre::Pass* pass = nullptr;
if (tech->getNumPasses() && (pass = tech->getPass(0))) {
mCompassMaterialMapTUS = pass->getTextureUnitState("Background");
if (mCompassMaterialMapTUS) {
//Make sure that the compass material is using the map texture for the base rendering
mCompassMaterialMapTUS->setTexture(mMap->getTexture());
mTexture = Ogre::TextureManager::getSingleton().createManual("RenderedCompass", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, Ogre::TEX_TYPE_2D, 128, 128, 1, Ogre::PF_A8R8G8B8, Ogre::TU_RENDERTARGET);
mRenderTexture = mTexture->getBuffer()->getRenderTarget();
mRenderTexture->removeAllViewports();
mRenderTexture->setAutoUpdated(false);
mRenderTexture->setActive(true);
mCamera = mSceneManager->createCamera("RenderedCompassCamera");
mViewport = mRenderTexture->addViewport(mCamera);
mViewport->setOverlaysEnabled(false);
mViewport->setShadowsEnabled(false);
mViewport->setSkiesEnabled(false);
mViewport->setClearEveryFrame(true);
mViewport->setBackgroundColour(Ogre::ColourValue::ZERO);
mMapRectangle = OGRE_NEW Ogre::Rectangle2D(true);
auto mapMaterialPtr = Ogre::MaterialManager::getSingleton().getByName(mCompassMaterial->getName(), Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
if (mapMaterialPtr) {
mMapRectangle->setMaterial(mapMaterialPtr);
}
//We need to maximise the rendered texture to cover the whole screen
Ogre::RenderSystem* rs = Ogre::Root::getSingleton().getRenderSystem();
Ogre::Real hOffset = rs->getHorizontalTexelOffset() / (0.5 * mViewport->getActualWidth());
Ogre::Real vOffset = rs->getVerticalTexelOffset() / (0.5 * mViewport->getActualHeight());
mMapRectangle->setCorners(-1 + hOffset, 1 - vOffset, 1 + hOffset, -1 - vOffset);
//Since a Rectangle2D instance is a moveable object it won't be rendered unless it's in the frustrum. If we set the axis aligned box to be "infinite" it will always be rendered.
Ogre::AxisAlignedBox aabInf;
aabInf.setInfinite();
mMapRectangle->setBoundingBox(aabInf);
//We can't attach something to the root node, so we'll attach it to a newly created node. We won't keep a reference to this node since it will be destroyed along with the scene manager when we ourselves are destroyed.
mSceneManager->getRootSceneNode()->createChildSceneNode()->attachObject(mMapRectangle);
//Return early since everything is good.
return;
}
}
}
}
S_LOG_WARNING("Could not load material '" << mMaterialName << "' for the compass.");
}
void updateRenderInfo()
{
if (mRenderSystem != nullptr)
{
mInfo.maximumDepth = mRenderSystem->getMaximumDepthInputValue();
mInfo.hOffset = mRenderSystem->getHorizontalTexelOffset() / float(mViewSize.width);
mInfo.vOffset = mRenderSystem->getVerticalTexelOffset() / float(mViewSize.height);
mInfo.aspectCoef = float(mViewSize.height) / float(mViewSize.width);
mInfo.pixScaleX = 1.0f / float(mViewSize.width);
mInfo.pixScaleY = 1.0f / float(mViewSize.height);
}
}
void LayerManager::_windowResized(const FloatSize& _size)
{
// новый размер
mViewSize = _size;
mPixScaleX = 1.0 / _size.width;
mPixScaleY = 1.0 / _size.height;
mAspectCoef = _size.height / _size.width;
Ogre::RenderSystem * render = Ogre::Root::getSingleton().getRenderSystem();
mHOffset = render->getHorizontalTexelOffset() / _size.width;
mVOffset = render->getVerticalTexelOffset() / _size.height;
// обновить всех
mUpdate = true;
}
void OgreImGui::renderQueueEnded(Ogre::uint8 queueGroupId, const Ogre::String& invocation,bool& repeatThisInvocation)
{
if ((queueGroupId != Ogre::RENDER_QUEUE_OVERLAY) || (invocation == "SHADOWS"))
{
return;
}
Ogre::RenderSystem* renderSys = Ogre::Root::getSingletonPtr()->getRenderSystem();
Ogre::Viewport* vp = renderSys->_getViewport();
if ((vp == nullptr) || (!vp->getTarget()->isPrimary()) || mFrameEnded)
{
return;
}
mFrameEnded = true;
ImGui::Render();
this->updateVertexData();
ImGuiIO& io = ImGui::GetIO();
// Construct projection matrix, taking texel offset corrections in account (important for DirectX9)
// See also:
// - OGRE-API specific hint: http://www.ogre3d.org/forums/viewtopic.php?f=5&p=536881#p536881
// - IMGUI Dx9 demo solution: https://github.com/ocornut/imgui/blob/master/examples/directx9_example/imgui_impl_dx9.cpp#L127-L138
const float texelOffsetX = renderSys->getHorizontalTexelOffset();
const float texelOffsetY = renderSys->getVerticalTexelOffset();
const float L = texelOffsetX;
const float R = io.DisplaySize.x + texelOffsetX;
const float T = texelOffsetY;
const float B = io.DisplaySize.y + texelOffsetY;
Ogre::Matrix4 projMatrix( 2.0f/(R-L), 0.0f, 0.0f, (L+R)/(L-R),
0.0f, -2.0f/(B-T), 0.0f, (T+B)/(B-T),
0.0f, 0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f);
mPass->getVertexProgramParameters()->setNamedConstant("ProjectionMatrix", projMatrix);
for(std::list<ImGUIRenderable*>::iterator it = mRenderables.begin(); it!=mRenderables.end(); ++it)
{
mSceneMgr->_injectRenderWithPass(mPass, (*it), false, false, nullptr);
}
}
void OgreImGui::Render()
{
// Construct projection matrix, taking texel offset corrections in account (important for DirectX9)
// See also:
// - OGRE-API specific hint: http://www.ogre3d.org/forums/viewtopic.php?f=5&p=536881#p536881
// - IMGUI Dx9 demo solution: https://github.com/ocornut/imgui/blob/master/examples/directx9_example/imgui_impl_dx9.cpp#L127-L138
ImGuiIO& io = ImGui::GetIO();
Ogre::RenderSystem* renderSys = Ogre::Root::getSingletonPtr()->getRenderSystem();
const float texelOffsetX = renderSys->getHorizontalTexelOffset();
const float texelOffsetY = renderSys->getVerticalTexelOffset();
const float L = texelOffsetX;
const float R = io.DisplaySize.x + texelOffsetX;
const float T = texelOffsetY;
const float B = io.DisplaySize.y + texelOffsetY;
Ogre::Matrix4 projMatrix( 2.0f/(R-L), 0.0f, 0.0f, (L+R)/(L-R),
0.0f, -2.0f/(B-T), 0.0f, (T+B)/(B-T),
0.0f, 0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f);
mPass->getVertexProgramParameters()->setNamedConstant("ProjectionMatrix", projMatrix);
// Instruct ImGui to Render() and process the resulting CmdList-s
/// Adopted from https://bitbucket.org/ChaosCreator/imgui-ogre2.1-binding
/// ... Commentary on OGRE forums: http://www.ogre3d.org/forums/viewtopic.php?f=5&t=89081#p531059
ImGui::Render();
ImDrawData* draw_data = ImGui::GetDrawData();
Ogre::Viewport* vp = renderSys->_getViewport();
int vpWidth = vp->getActualWidth();
int vpHeight = vp->getActualHeight();
for (int i = 0; i < draw_data->CmdListsCount; ++i)
{
const ImDrawList* draw_list = draw_data->CmdLists[i];
unsigned int startIdx = 0;
for (int j = 0; j < draw_list->CmdBuffer.Size; ++j)
{
// Create a renderable and fill it's buffers
ImGUIRenderable renderable;
const ImDrawCmd *drawCmd = &draw_list->CmdBuffer[j];
renderable.updateVertexData(draw_list->VtxBuffer.Data, &draw_list->IdxBuffer.Data[startIdx], draw_list->VtxBuffer.Size, drawCmd->ElemCount);
// Set scissoring
int scLeft = static_cast<int>(drawCmd->ClipRect.x); // Obtain bounds
int scTop = static_cast<int>(drawCmd->ClipRect.y);
int scRight = static_cast<int>(drawCmd->ClipRect.z);
int scBottom = static_cast<int>(drawCmd->ClipRect.w);
scLeft = scLeft < 0 ? 0 : (scLeft > vpWidth ? vpWidth : scLeft); // Clamp bounds to viewport dimensions
scRight = scRight < 0 ? 0 : (scRight > vpWidth ? vpWidth : scRight);
scTop = scTop < 0 ? 0 : (scTop > vpHeight ? vpHeight : scTop);
scBottom = scBottom < 0 ? 0 : (scBottom > vpHeight ? vpHeight : scBottom);
renderSys->setScissorTest(true, scLeft, scTop, scRight, scBottom);
// Render!
mSceneMgr->_injectRenderWithPass(mPass, &renderable, false, false, nullptr);
// Update counts
startIdx += drawCmd->ElemCount;
}
}
renderSys->setScissorTest(false);
}
