Add crossview support (#7361)

3 files changed, 7 insertions, 4 deletions

diff --git a/src/client/render/factory.cpp b/src/client/render/factory.cpp
index 410ceaad7..3aabc5db9 100644
--- a/src/client/render/factory.cpp
+++ b/src/client/render/factory.cpp
@@ -41,5 +41,7 @@ RenderingCore *createRenderingCore(const std::string &stereo_mode, IrrlichtDevic
 		return new RenderingCoreSideBySide(device, client, hud);
 	if (stereo_mode == "topbottom")
 		return new RenderingCoreSideBySide(device, client, hud, true);
+	if (stereo_mode == "crossview")
+		return new RenderingCoreSideBySide(device, client, hud, false, true);
 	throw std::invalid_argument("Invalid rendering mode: " + stereo_mode);
 }
diff --git a/src/client/render/sidebyside.cpp b/src/client/render/sidebyside.cpp
index 9b1e06d4a..ed08810db 100644
--- a/src/client/render/sidebyside.cpp
+++ b/src/client/render/sidebyside.cpp
@@ -23,8 +23,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "client/hud.h"
 
 RenderingCoreSideBySide::RenderingCoreSideBySide(
-	IrrlichtDevice *_device, Client *_client, Hud *_hud, bool _horizontal)
-	: RenderingCoreStereo(_device, _client, _hud), horizontal(_horizontal)
+	IrrlichtDevice *_device, Client *_client, Hud *_hud, bool _horizontal, bool _flipped)
+	: RenderingCoreStereo(_device, _client, _hud), horizontal(_horizontal), flipped(_flipped)
 {
 }
 
@@ -62,7 +62,7 @@ void RenderingCoreSideBySide::drawAll()
 void RenderingCoreSideBySide::useEye(bool _right)
 {
 	driver->setRenderTarget(_right ? right : left, true, true, skycolor);
-	RenderingCoreStereo::useEye(_right);
+	RenderingCoreStereo::useEye(_right ^ flipped);
 }
 
 void RenderingCoreSideBySide::resetEye()
diff --git a/src/client/render/sidebyside.h b/src/client/render/sidebyside.h
index b5cf9d5db..f8ed256b3 100644
--- a/src/client/render/sidebyside.h
+++ b/src/client/render/sidebyside.h
@@ -27,6 +27,7 @@ protected:
 	video::ITexture *left = nullptr;
 	video::ITexture *right = nullptr;
 	bool horizontal = false;
+	bool flipped = false;
 	core::dimension2du image_size;
 	v2s32 rpos;
 
@@ -37,6 +38,6 @@ protected:
 
 public:
 	RenderingCoreSideBySide(IrrlichtDevice *_device, Client *_client, Hud *_hud,
-			bool _horizontal = false);
+			bool _horizontal = false, bool _flipped = false);
 	void drawAll() override;
 };