SDL: Move selecting the required ScalerProc into a separate function

2 files changed, 14 insertions, 6 deletions

diff --git a/backends/graphics/surfacesdl/surfacesdl-graphics.cpp b/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
index 304848ed4c..e14471b067 100644
--- a/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
+++ b/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
@@ -674,12 +674,8 @@ bool SurfaceSdlGraphicsManager::setGraphicsMode(int mode) {
 	return true;
 }
 
-void SurfaceSdlGraphicsManager::setGraphicsModeIntern() {
-	Common::StackLock lock(_graphicsMutex);
+ScalerProc *SurfaceSdlGraphicsManager::getGraphicsScalerProc(int mode) const {
 	ScalerProc *newScalerProc = 0;
-
-	updateShader();
-
 	switch (_videoMode.mode) {
 	case GFX_NORMAL:
 		newScalerProc = Normal1x;
@@ -722,8 +718,19 @@ void SurfaceSdlGraphicsManager::setGraphicsModeIntern() {
 		newScalerProc = DotMatrix;
 		break;
 #endif // USE_SCALERS
+	}
 
-	default:
+	return newScalerProc;
+}
+
+void SurfaceSdlGraphicsManager::setGraphicsModeIntern() {
+	Common::StackLock lock(_graphicsMutex);
+
+	updateShader();
+
+	ScalerProc *newScalerProc = getGraphicsScalerProc(_videoMode.mode);
+
+	if (!newScalerProc) {
 		error("Unknown gfx mode %d", _videoMode.mode);
 	}
 
diff --git a/backends/graphics/surfacesdl/surfacesdl-graphics.h b/backends/graphics/surfacesdl/surfacesdl-graphics.h
index 3db2ac6709..68d0cd2b07 100644
--- a/backends/graphics/surfacesdl/surfacesdl-graphics.h
+++ b/backends/graphics/surfacesdl/surfacesdl-graphics.h
@@ -189,6 +189,7 @@ protected:
 	virtual void handleResizeImpl(const int width, const int height) override;
 
 	virtual int getGraphicsModeScale(int mode) const override;
+	virtual ScalerProc *getGraphicsScalerProc(int mode) const override;
 
 #if SDL_VERSION_ATLEAST(2, 0, 0)
 	/* SDL2 features a different API for 2D graphics. We create a wrapper