From 4c057739d0538d01481643848a6cb558e0ef4e51 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Thu, 7 Jun 2012 00:31:46 +0300
Subject: More improve load image speed in opengl mode.

---
 src/resources/dye.cpp   |  23 +++++++++++
 src/resources/dye.h     |   2 +
 src/resources/image.cpp | 104 +++++++++++++++++++++++++++++++++---------------
 3 files changed, 98 insertions(+), 31 deletions(-)

diff --git a/src/resources/dye.cpp b/src/resources/dye.cpp
index 50972c6d6..78ad8137a 100644
--- a/src/resources/dye.cpp
+++ b/src/resources/dye.cpp
@@ -228,6 +228,29 @@ void DyePalette::replaceColor(Uint8 *color) const
     }
 }
 
+void DyePalette::replaceOGLColor(Uint8 *color) const
+{
+    std::vector<Color>::const_iterator it = mColors.begin();
+    std::vector<Color>::const_iterator it_end = mColors.end();
+    while (it != it_end)
+    {
+        const Color &col = *it;
+        ++ it;
+        if (it == it_end)
+            return;
+        const Color &col2 = *it;
+        if (color[2] == col.value[0] && color[1] == col.value[1]
+            && color[0] == col.value[2])
+        {
+            color[0] = col2.value[0];
+            color[1] = col2.value[1];
+            color[2] = col2.value[2];
+            return;
+        }
+        ++ it;
+    }
+}
+
 Dye::Dye(const std::string &description)
 {
     for (int i = 0; i < dyePalateSize; ++i)
diff --git a/src/resources/dye.h b/src/resources/dye.h
index 03aec71cb..b238f65fb 100644
--- a/src/resources/dye.h
+++ b/src/resources/dye.h
@@ -63,6 +63,8 @@ class DyePalette
 
         void replaceColor(Uint8 *color) const;
 
+        void replaceOGLColor(Uint8 *color) const;
+
     private:
         struct Color
         { unsigned char value[3]; };
diff --git a/src/resources/image.cpp b/src/resources/image.cpp
index 596a477c6..85643c8df 100644
--- a/src/resources/image.cpp
+++ b/src/resources/image.cpp
@@ -149,50 +149,92 @@ Resource *Image::load(SDL_RWops *rw, Dye const &dye)
         return nullptr;
     }
 
+    SDL_Surface *surf = nullptr;
     SDL_PixelFormat rgba;
     rgba.palette = nullptr;
     rgba.BitsPerPixel = 32;
     rgba.BytesPerPixel = 4;
-    rgba.Rmask = 0xFF000000; rgba.Rloss = 0; rgba.Rshift = 24;
-    rgba.Gmask = 0x00FF0000; rgba.Gloss = 0; rgba.Gshift = 16;
-    rgba.Bmask = 0x0000FF00; rgba.Bloss = 0; rgba.Bshift = 8;
-    rgba.Amask = 0x000000FF; rgba.Aloss = 0; rgba.Ashift = 0;
     rgba.colorkey = 0;
     rgba.alpha = 255;
+    if (mUseOpenGL)
+    {
+        surf = convertTo32Bit(tmpImage);
+        SDL_FreeSurface(tmpImage);
 
-    SDL_Surface *surf = SDL_ConvertSurface(tmpImage, &rgba, SDL_SWSURFACE);
-    SDL_FreeSurface(tmpImage);
-
-    Uint32 *pixels = static_cast<Uint32 *>(surf->pixels);
-    DyePalette *pal = dye.getSPalete();
+        Uint32 *pixels = static_cast<Uint32 *>(surf->pixels);
+        DyePalette *pal = dye.getSPalete();
 
-    if (pal)
-    {
-        for (Uint32 *p_end = pixels + surf->w * surf->h;
-             pixels != p_end; ++pixels)
+        if (pal)
         {
-            Uint8 *p = (Uint8 *)pixels;
-            const int alpha = *p & 255;
-            if (!alpha)
-                continue;
-            pal->replaceColor(p + 1);
+            for (Uint32 *p_end = pixels + surf->w * surf->h;
+                pixels != p_end; ++pixels)
+            {
+                Uint8 *p = (Uint8 *)pixels;
+                const int alpha = *p & 255;
+                if (!alpha)
+                    continue;
+                pal->replaceOGLColor(p);
+            }
+        }
+        else
+        {
+            for (Uint32 *p_end = pixels + surf->w * surf->h;
+                pixels != p_end; ++pixels)
+            {
+                const Uint32 p = *pixels;
+                const int alpha = (p >> 24) & 255;
+                if (!alpha)
+                    continue;
+                int v[3];
+                v[0] = (p) & 255;
+                v[1] = (p >> 8) & 255;
+                v[2] = (p >> 16 ) & 255;
+                dye.update(v);
+                *pixels = (v[0]) | (v[1] << 8) | (v[2] << 16) | (alpha << 24);
+            }
         }
     }
     else
     {
-        for (Uint32 *p_end = pixels + surf->w * surf->h;
-             pixels != p_end; ++pixels)
+        rgba.Rmask = 0xFF000000; rgba.Rloss = 0; rgba.Rshift = 24;
+        rgba.Gmask = 0x00FF0000; rgba.Gloss = 0; rgba.Gshift = 16;
+        rgba.Bmask = 0x0000FF00; rgba.Bloss = 0; rgba.Bshift = 8;
+        rgba.Amask = 0x000000FF; rgba.Aloss = 0; rgba.Ashift = 0;
+
+        surf = SDL_ConvertSurface(tmpImage, &rgba, SDL_SWSURFACE);
+        SDL_FreeSurface(tmpImage);
+
+        Uint32 *pixels = static_cast<Uint32 *>(surf->pixels);
+        DyePalette *pal = dye.getSPalete();
+
+        if (pal)
+        {
+            for (Uint32 *p_end = pixels + surf->w * surf->h;
+                pixels != p_end; ++pixels)
+            {
+                Uint8 *p = (Uint8 *)pixels;
+                const int alpha = *p & 255;
+                if (!alpha)
+                    continue;
+                pal->replaceColor(p + 1);
+            }
+        }
+        else
         {
-            const Uint32 p = *pixels;
-            const int alpha = p & 255;
-            if (!alpha)
-                continue;
-            int v[3];
-            v[0] = (p >> 24) & 255;
-            v[1] = (p >> 16) & 255;
-            v[2] = (p >> 8 ) & 255;
-            dye.update(v);
-            *pixels = (v[0] << 24) | (v[1] << 16) | (v[2] << 8) | alpha;
+            for (Uint32 *p_end = pixels + surf->w * surf->h;
+                pixels != p_end; ++pixels)
+            {
+                const Uint32 p = *pixels;
+                const int alpha = p & 255;
+                if (!alpha)
+                    continue;
+                int v[3];
+                v[0] = (p >> 24) & 255;
+                v[1] = (p >> 16) & 255;
+                v[2] = (p >> 8 ) & 255;
+                dye.update(v);
+                *pixels = (v[0] << 24) | (v[1] << 16) | (v[2] << 8) | alpha;
+            }
         }
     }
 
@@ -908,7 +950,7 @@ void Image::dumpSurfaceFormat(SDL_Surface *image)
 {
     if (image->format)
     {
-        const SDL_PixelFormat *format = image->format;
+        const SDL_PixelFormat * const format = image->format;
         logger->log("Bytes per pixel: %d", format->BytesPerPixel);
         logger->log("Alpha: %d", format->alpha);
         logger->log("Loss: %02x, %02x, %02x, %02x", (int)format->Rloss,
-- 
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