From 4cadce9738bb306c1c31cde89f91feb8132875cf Mon Sep 17 00:00:00 2001
From: notaz <notaz@pixelinis>
Date: Tue, 23 Jun 2009 00:24:56 +0300
Subject: [PATCH] sw scaler for gp2x

---
 gui.c   |  2 +-
 video.c | 52 +++++++++++++++++++++++++++++++++-------------------
 video.h | 10 +++++++---
 3 files changed, 41 insertions(+), 23 deletions(-)

diff --git a/gui.c b/gui.c
index b1a2d7d..a2ae99e 100644
--- a/gui.c
+++ b/gui.c
@@ -756,7 +756,7 @@ u8 *scale_options[] =
   "unscaled 3:2", "scaled 3:2 (slower)",
   "unscaled 3:2 (anti-tear)", "scaled 3:2 (anti-tear)"
 #else
-  "unscaled 3:2", "scaled 3:2", "fullscreen"
+  "unscaled 3:2", "scaled 3:2", "fullscreen", "scaled 3:2 (software)"
 #ifdef PSP_BUILD
   " 16:9"
 #endif
diff --git a/video.c b/video.c
index b857bf1..8730650 100644
--- a/video.c
+++ b/video.c
@@ -3464,26 +3464,37 @@ void flip_screen()
   }
 #ifdef GP2X_BUILD
   {
-    if((screen_scale == unscaled) &&
-     (resolution_width == small_resolution_width) &&
+    if((resolution_width == small_resolution_width) &&
      (resolution_height == small_resolution_height))
     {
-      SDL_Rect srect = {0, 0, 240, 160};
-      SDL_Rect drect = {40, 40, 240, 160};
-      SDL_BlitSurface(screen, &srect, hw_screen, &drect);
-    }
-    else if((screen_scale == scaled_aspect) &&
-     (resolution_width == small_resolution_width) &&
-     (resolution_height == small_resolution_height))
-    {
-      SDL_Rect drect = {0, 10, 0, 0};
-      SDL_BlitSurface(screen, NULL, hw_screen, &drect);
-    }
-    else
-    {
-      SDL_BlitSurface(screen, NULL, hw_screen, NULL);
+      switch (screen_scale)
+      {
+        case unscaled:
+        {
+          SDL_Rect srect = {0, 0, 240, 160};
+          SDL_Rect drect = {40, 40, 240, 160};
+          warm_cache_op_all(WOP_D_CLEAN);
+          SDL_BlitSurface(screen, &srect, hw_screen, &drect);
+          return;
+        }
+        case scaled_aspect:
+        {
+          SDL_Rect drect = {0, 10, 0, 0};
+          warm_cache_op_all(WOP_D_CLEAN);
+          SDL_BlitSurface(screen, NULL, hw_screen, &drect);
+          return;
+        }
+        case scaled_aspect_sw:
+        {
+          upscale_aspect(hw_screen->pixels, get_screen_pixels());
+          return;
+        }
+        case fullscreen:
+          break;
+      }
     }
     warm_cache_op_all(WOP_D_CLEAN);
+    SDL_BlitSurface(screen, NULL, hw_screen, NULL);
   }
 #else
   SDL_Flip(screen);
@@ -3816,7 +3827,7 @@ void video_resolution_small()
   SDL_GP2X_AllowGfxMemory(NULL, 0);
 
   w = 320; h = 240;
-  if (screen_scale != unscaled)
+  if (screen_scale == scaled_aspect || screen_scale == fullscreen)
   {
     w = small_resolution_width * video_scale;
     h = small_resolution_height * video_scale;
@@ -3824,9 +3835,12 @@ void video_resolution_small()
   if (screen_scale == scaled_aspect) h += 20;
   hw_screen = SDL_SetVideoMode(w, h, 16, SDL_HWSURFACE);
 
+  w = small_resolution_width * video_scale;
+  if (screen_scale == scaled_aspect_sw)
+    w = 320;
   screen = SDL_CreateRGBSurface(SDL_HWSURFACE,
-   small_resolution_width * video_scale, small_resolution_height *
-   video_scale, 16, 0xFFFF, 0xFFFF, 0xFFFF, 0);
+   w, small_resolution_height * video_scale,
+   16, 0xFFFF, 0xFFFF, 0xFFFF, 0);
 
   SDL_ShowCursor(0);
 
diff --git a/video.h b/video.h
index cb717f2..40c24c2 100644
--- a/video.h
+++ b/video.h
@@ -77,11 +77,15 @@ typedef enum
 {
   unscaled,
   scaled_aspect,
-#ifndef WIZ_BUILD
-  fullscreen,
-#endif
+#ifdef WIZ_BUILD
   unscaled_rot,
   scaled_aspect_rot,
+#elif defined(GP2X_BUILD)
+  fullscreen,
+  scaled_aspect_sw,
+#else
+  fullscreen,
+#endif
 } video_scale_type;
 
 typedef enum
-- 
2.39.5