SDL: Update docs

From 82c91fed21aae61fb6dc21eae8adbd4b3d44a0c8 Mon Sep 17 00:00:00 2001
From: Ivan Epifanov <[EMAIL REDACTED]>
Date: Thu, 9 Sep 2021 12:38:38 +0300
Subject: [PATCH] Update docs

---
 docs/README-vita.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/README-vita.md b/docs/README-vita.md
index 4996e5c902..8e50e53805 100644
--- a/docs/README-vita.md
+++ b/docs/README-vita.md
@@ -19,7 +19,8 @@ To build for the PSVita, make sure you have vitasdk and cmake installed and run:
 
 Notes
 -----
-* gles2 support is disabled by default and can be enabled by configuring with `-DVIDEO_VITA_PIB=ON`
+* gles1/gles2 support and renderers are disabled by default and can be enabled by configuring with `-DVIDEO_VITA_PVR=ON`
+* gles2 support via PIB is disabled by default and can be enabled by configuring with `-DVIDEO_VITA_PIB=ON`
 * By default SDL emits mouse events for touch events on every touchscreen.  
   Vita has two touchscreens, so it's recommended to use `SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");` and handle touch events instead.
 * Support for L2/R2/R3/R3 buttons, haptic feedback and gamepad led only available on PSTV, or when using external ds4 gamepad on vita.
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