Resize renderer after [re]init

Fixes crash on Android when app is brought back to the foreground
Issue #228

core/emulator.h

@@ -46,6 +46,7 @@ bool dc_is_load_done();
 void dc_cancel_load();
 void dc_get_load_status();
 bool dc_is_running();
+void dc_resize_renderer();
 
 enum class Event {
 	Start,

core/nullDC.cpp

@@ -735,10 +735,8 @@ void SaveSettings()
 #endif
 }
 
-void dc_resume()
+void dc_resize_renderer()
 {
-	SetMemoryHandlers();
-	settings.aica.NoBatch = config::ForceWindowsCE || config::DSPEnabled;
 	int hres;
 	int vres = config::RenderResolution;
 	if (config::Widescreen && !config::Rotate90)
@@ -759,6 +757,13 @@ void dc_resume()
 	}
 	if (renderer != nullptr)
 		renderer->Resize(hres, vres);
+}
+
+void dc_resume()
+{
+	SetMemoryHandlers();
+	settings.aica.NoBatch = config::ForceWindowsCE || config::DSPEnabled;
+	dc_resize_renderer();
 
 	EventManager::event(Event::Resume);
 	if (!emu_thread.thread.joinable())

core/rend/gl4/gles.cpp

@@ -712,15 +712,11 @@ static bool RenderFrame(int width, int height)
 
 	//setup render target first
 	if (is_rtt)
-	{
 		output_fbo = BindRTT(false);
-		if (output_fbo == 0)
-			return false;
-	}
 	else
-	{
 		output_fbo = init_output_framebuffer(rendering_width, rendering_height);
-	}
+	if (output_fbo == 0)
+		return false;
 
 	glcache.Disable(GL_SCISSOR_TEST);
 

core/rend/gles/gles.cpp

@@ -1099,7 +1099,8 @@ bool RenderFrame(int width, int height)
 	}
 	else
 	{
-		init_output_framebuffer(width, height);
+		if (init_output_framebuffer(width, height) == 0)
+			return false;
 	}
 
 	bool wide_screen_on = !is_rtt && config::Widescreen && !matrices.IsClipped() && !config::Rotate90;

core/rend/gles/gltex.cpp

@@ -523,7 +523,8 @@ GLuint init_output_framebuffer(int width, int height)
 		// Check that our FBO creation was successful
 		GLuint uStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
 
-		verify(uStatus == GL_FRAMEBUFFER_COMPLETE);
+		if (uStatus != GL_FRAMEBUFFER_COMPLETE)
+			return 0;
 
 		glcache.Disable(GL_SCISSOR_TEST);
 		glcache.ClearColor(0.f, 0.f, 0.f, 0.f);

core/rend/mainui.cpp

@@ -24,6 +24,7 @@
 #include "oslib/oslib.h"
 #include "wsi/context.h"
 #include "cfg/option.h"
+#include "emulator.h"
 
 bool mainui_enabled;
 u32 MainFrameCount;
@@ -59,6 +60,7 @@ bool mainui_rend_frame()
 void mainui_init()
 {
 	rend_init_renderer();
+	dc_resize_renderer();
 }
 
 void mainui_term()