Config: Add "enableBlitting" entry to toggle GL_EXT_framebuffer_blit

mkxp.conf.sample

@@ -124,6 +124,15 @@
 # subImageFix=false
 
 
+# Enable framebuffer blitting if the driver is
+# capable of it. Some drivers carry buggy
+# implementations of this functionality, so
+# disabling it can be used as a workaround
+# (default: enabled)
+#
+# enableBlitting=true
+
+
 # Limit the maximum size (width, height) of
 # most textures mkxp will create (exceptions are
 # rendering backbuffers and similar).

src/config.cpp

@@ -166,6 +166,7 @@ void Config::read(int argc, char *argv[])
 	PO_DESC(syncToRefreshrate, bool, false) \
 	PO_DESC(solidFonts, bool, false) \
 	PO_DESC(subImageFix, bool, false) \
+	PO_DESC(enableBlitting, bool, true) \
 	PO_DESC(maxTextureSize, int, 0) \
 	PO_DESC(gameFolder, std::string, ".") \
 	PO_DESC(anyAltToggleFS, bool, false) \

src/config.h

@@ -49,6 +49,7 @@ struct Config
 	bool solidFonts;
 
 	bool subImageFix;
+	bool enableBlitting;
 	int maxTextureSize;
 
 	std::string gameFolder;

src/main.cpp

@@ -102,6 +102,9 @@ int rgssThreadFun(void *userdata)
 		return 0;
 	}
 
+	if (!conf.enableBlitting)
+		gl.BlitFramebuffer = 0;
+
 	gl.ClearColor(0, 0, 0, 1);
 	gl.Clear(GL_COLOR_BUFFER_BIT);
 	SDL_GL_SwapWindow(win);