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 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);
}
}