X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=README.OMAP;h=96af2405c0b6d0f2fe6be59487f1a85ed2ba6d59;hb=5cc6dcb71c2f2f24e54bf1ab9f09d8e560e8e4d9;hp=ad662a3a31ec00c3d3ff570d425aa15c1d4842da;hpb=e1837b2c78d48d2811ff77e8702810b7620dd4f8;p=sdl_omap.git

diff --git a/README.OMAP b/README.OMAP
index ad662a3..96af240 100644
--- a/README.OMAP
+++ b/README.OMAP
@@ -52,6 +52,8 @@ SDL_OMAP_LAYER_SIZE:
   Valid values:
     "WxH", for example "640x480"
     "fullscreen" to cover whole screen.
+    "scaled" to upscale the screen proportionally, letterboxing or pillarboxing.
+    "pixelperfect" to upscale by a whole-number factor (e.g. 2x or 3x size).
 
 SDL_OMAP_BORDER_CUT:
   This can be used to move parts of SDL surface out of screen, in other
@@ -73,6 +75,15 @@ SDL_OMAP_FORCE_DOUBLEBUF:
   Note that if app isn't updating whole buffer each frame, it will glitch.
   This is the same as specifying SDL_DOUBLEBUF to SDL_SetVideoMode.
 
+SDL_OMAP_FORCE_DIRECTBUF:
+  When double buffering is not used, this option forces all blits to go
+  directly to the framebuffer (SDL_UpdateRect[s]() has no effect), which will
+  give speed but may cause flickering. Otherwise all blits will go to offscreen
+  buffer and SDL_UpdateRect[s]() is needed to update the screen (this is how
+  standard SDL works too).
+  When double buffering is used, this option has no effect (all blits always
+  go to back buffer that's displayed after flip).
+
 SDL_OMAP_NO_TS_TRANSLATE:
   Disable automatic touchscreen screen -> layer coordinate translation,
   return real screen coordinates.
@@ -95,6 +106,9 @@ force_vsync = 1/0
 # same as SDL_OMAP_FORCE_DOUBLEBUF
 force_doublebuf = 1/0
 
+# same as SDL_OMAP_FORCE_DIRECTBUF
+force_directbuf = 1/0
+
 # same as SDL_OMAP_NO_TS_TRANSLATE
 no_ts_translate = 1/0