-some fixes to where screen is read from rasterizer

-fixed bug in ogg vorbis looping
-properly flushing audiostream rb when stopping

drivers/gles2/rasterizer_gles2.cpp

@@ -9164,7 +9164,11 @@ void RasterizerGLES2::_canvas_item_setup_shader_params(CanvasItemMaterial *mater
 		glBindTexture(GL_TEXTURE_2D,framebuffer.sample_color);
 		if (framebuffer.scale==1 && !canvas_texscreen_used) {
 #ifdef GLEW_ENABLED
-			glReadBuffer(GL_COLOR_ATTACHMENT0);
+			if (current_rt) {
+				glReadBuffer(GL_COLOR_ATTACHMENT0);
+			} else {
+				glReadBuffer(GL_BACK);
+			}
 #endif
 			glCopyTexSubImage2D(GL_TEXTURE_2D,0,x,y,x,y,viewport.width,viewport.height);
 //			if (current_clip) {
@@ -9344,7 +9348,11 @@ void RasterizerGLES2::canvas_render_items(CanvasItem *p_item_list,int p_z,const
 			glBindTexture(GL_TEXTURE_2D,framebuffer.sample_color);
 
 #ifdef GLEW_ENABLED
-			glReadBuffer(GL_COLOR_ATTACHMENT0);
+			if (current_rt) {
+				glReadBuffer(GL_COLOR_ATTACHMENT0);
+			} else {
+				glReadBuffer(GL_BACK);
+			}
 #endif
 			glCopyTexSubImage2D(GL_TEXTURE_2D,0,x,y,x,y,w,h);
 //			if (current_clip) {

drivers/vorbis/audio_stream_ogg_vorbis.cpp

@@ -361,7 +361,7 @@ void AudioStreamPlaybackOGGVorbis::_clear_stream() {
 	_close_file();
 
 	stream_loaded=false;
-	stream_channels=1;
+	//stream_channels=1;
 	playing=false;
 }
 

scene/3d/spatial_stream_player.cpp

@@ -171,6 +171,7 @@ void SpatialStreamPlayer::stop() {
 	//AudioServer::get_singleton()->stream_set_active(stream_rid,false);
 	SpatialSoundServer::get_singleton()->source_set_audio_stream(get_source_rid(),NULL);
 	playback->stop();
+	resampler.flush();
 	//set_idle_process(false);
 }
 

scene/audio/stream_player.cpp

@@ -165,6 +165,8 @@ void StreamPlayer::stop() {
 	//_THREAD_SAFE_METHOD_
 	AudioServer::get_singleton()->stream_set_active(stream_rid,false);
 	playback->stop();
+	resampler.flush();
+
 	//set_idle_process(false);
 }