graphics: make raw image synchronization an opt-in setting

src/common/emulatorConfig.cpp

@@ -152,6 +152,10 @@ bool ReadbackLinearImagesEnabled() {
 	return g_config->readback_linear_images;
 }
 
+bool SyncRawImageBuffersEnabled() {
+	return g_config->sync_raw_image_buffers;
+}
+
 bool TessellationEnabled() {
 	return g_config->tessellation_enabled;
 }

src/common/emulatorConfig.h

@@ -73,6 +73,7 @@ struct ConfigOptions {
 	bool                   gpu_assisted_validation_enabled = false;
 	bool                   renderdoc_enabled           = false;
 	bool                   readback_linear_images      = false;
+	bool                   sync_raw_image_buffers      = false;
 	bool                   tessellation_enabled        = false;
 	bool                   trophy_enabled              = true;
 	bool                   playgo_hack_enabled         = false;
@@ -124,6 +125,7 @@ bool GpuAssistedValidationEnabled();
 
 bool RenderDocEnabled();
 bool ReadbackLinearImagesEnabled();
+bool SyncRawImageBuffersEnabled();
 bool TessellationEnabled();
 bool TrophyEnabled();
 bool PlayGoHackEnabled();