From 043a0edf61bfef84dfd42aa225a9f0b9703ebd27 Mon Sep 17 00:00:00 2001
From: Ricardo Cruz <rick2@aeiou.pt>
Date: Sat, 12 Jun 2004 15:42:24 +0000
Subject: [PATCH 1/1] Passed color mask from screen SDL_Surface to the
 gradients cache one. This fixes the slowness.

Still, there are problems when scrolling. This looks like some background issue, but dunno where.

SVN-Revision: 1470
---
 src/screen/texture.cpp | 61 +++++++++++++++++++-------------------------------
 1 file changed, 23 insertions(+), 38 deletions(-)

diff --git a/src/screen/texture.cpp b/src/screen/texture.cpp
index d84175419..6e9f82eb8 100644
--- a/src/screen/texture.cpp
+++ b/src/screen/texture.cpp
@@ -366,44 +366,29 @@ sdl_surface_from_gradient(Color top, Color bottom, int w, int h)
 {
   SDL_Surface* sdl_surface;
 
-  Uint32 rmask, gmask, bmask, amask;
-
-  /* SDL interprets each pixel as a 32-bit number, so our masks must depend
-       on the endianness (byte order) of the machine */
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-    rmask = 0xff000000;
-    gmask = 0x00ff0000;
-    bmask = 0x0000ff00;
-    amask = 0x000000ff;
-#else
-    rmask = 0x000000ff;
-    gmask = 0x0000ff00;
-    bmask = 0x00ff0000;
-    amask = 0xff000000;
-#endif
-
-    sdl_surface = SDL_CreateRGBSurface(screen->flags, w, h,
-                      screen->format->BitsPerPixel, rmask, gmask, bmask, amask);
-
-    if(sdl_surface == NULL)
-        st_abort("Cannot create surface for the gradient", "SURFACE");
-
-    float redstep = (float(bottom.red)-float(top.red)) / float(h);
-    float greenstep = (float(bottom.green)-float(top.green)) / float(h);
-    float bluestep = (float(bottom.blue) - float(top.blue)) / float(h);
-
-    SDL_Rect rect;
-    rect.x = 0;
-    rect.w = w;
-    rect.h = 1;
-    for(float y = 0; y < h; y++)
-      {
-      rect.y = (int)y;
-      SDL_FillRect(sdl_surface, &rect, SDL_MapRGB(sdl_surface->format,
-          int(float(top.red) + redstep * y),
-          int(float(top.green) + greenstep * y),
-          int(float(top.blue) + bluestep * y)));
-      }
+  sdl_surface = SDL_CreateRGBSurface(screen->flags, w, h,
+                    screen->format->BitsPerPixel, screen->format->Rmask,
+                    screen->format->Gmask, screen->format->Bmask, screen->format->Amask);
+
+  if(sdl_surface == NULL)
+      st_abort("Cannot create surface for the gradient", "SURFACE");
+
+  float redstep = (float(bottom.red)-float(top.red)) / float(h);
+  float greenstep = (float(bottom.green)-float(top.green)) / float(h);
+  float bluestep = (float(bottom.blue) - float(top.blue)) / float(h);
+
+  SDL_Rect rect;
+  rect.x = 0;
+  rect.w = w;
+  rect.h = 1;
+  for(float y = 0; y < h; y++)
+    {
+    rect.y = (int)y;
+    SDL_FillRect(sdl_surface, &rect, SDL_MapRGB(sdl_surface->format,
+        int(float(top.red) + redstep * y),
+        int(float(top.green) + greenstep * y),
+        int(float(top.blue) + bluestep * y)));
+    }
 
   return sdl_surface;
 }
-- 
2.11.0