Add an option to downscale hi-res views

Some older devices that use gpu_unai don't have a high enough
resolution to display all of the pixels in high-res mode. There's a
setting in unai to skip rendering of these pixels, but it's not
connected to the libretro frontend, and does not appear to be used in
the gpulib implementation at all.

This commit adds a gpu_unai setting, Enable Hi-Res Downscaling, that
will enable pixel skipping and blit only the pixels actually rendered
into a buffer no larger than 384x240. This buffer is then treated as
the actual framebuffer by gpulib and the libretro frontend.

1 files changed, 1 insertions, 0 deletions

diff --git a/frontend/plugin_lib.h b/frontend/plugin_lib.h
index 09cc4c5..ee03169 100644
--- a/frontend/plugin_lib.h
+++ b/frontend/plugin_lib.h
@@ -91,6 +91,7 @@ struct rearmed_cbs {
 		int   abe_hack;
 		int   no_light, no_blend;
 		int   lineskip;
+		int   scale_hires;
 	} gpu_unai;
 	struct {
 		int   dwActFixes;