X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fvideo%2Fsdl_renderer.cpp;h=56cb6b89918092f339e276ab674cdbfcf1838c88;hb=d427db3e7c37d524e540511dd8cfce6e985bf32b;hp=90ee2a1345967fe13dc32a2d4b85971c26b3301d;hpb=e7a12ed844f040d270e50ce25f74de5f017c1157;p=supertux.git

diff --git a/src/video/sdl_renderer.cpp b/src/video/sdl_renderer.cpp
index 90ee2a134..56cb6b899 100644
--- a/src/video/sdl_renderer.cpp
+++ b/src/video/sdl_renderer.cpp
@@ -43,10 +43,95 @@
 #include "texture_manager.hpp"
 #include "obstack/obstackpp.hpp"
 
+namespace
+{
+  SDL_Surface *apply_alpha(SDL_Surface *src, float alpha_factor)
+  {
+    // FIXME: This is really slow
+    assert(src->format->Amask);
+    int alpha = (int) (alpha_factor * 256);
+    SDL_Surface *dst = SDL_CreateRGBSurface(src->flags, src->w, src->h, src->format->BitsPerPixel, src->format->Rmask,  src->format->Gmask, src->format->Bmask, src->format->Amask);
+    int bpp = dst->format->BytesPerPixel;
+    if(SDL_MUSTLOCK(src))
+    {
+      SDL_LockSurface(src);
+    }
+    if(SDL_MUSTLOCK(dst))
+    {
+      SDL_LockSurface(dst);
+    }
+    for(int y = 0;y < dst->h;y++) {
+      for(int x = 0;x < dst->w;x++) {
+        Uint8 *srcpixel = (Uint8 *) src->pixels + y * src->pitch + x * bpp;
+        Uint8 *dstpixel = (Uint8 *) dst->pixels + y * dst->pitch + x * bpp;
+        Uint32 mapped = 0;
+        switch(bpp) {
+          case 1:
+            mapped = *srcpixel;
+            break;
+          case 2:
+            mapped = *(Uint16 *)srcpixel;
+            break;
+          case 3:
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+            mapped |= srcpixel[0] << 16;
+            mapped |= srcpixel[1] << 8;
+            mapped |= srcpixel[2] << 0;
+#else
+            mapped |= srcpixel[0] << 0;
+            mapped |= srcpixel[1] << 8;
+            mapped |= srcpixel[2] << 16;
+#endif
+            break;
+          case 4:
+            mapped = *(Uint32 *)srcpixel;
+            break;
+        }
+        Uint8 r, g, b, a;
+        SDL_GetRGBA(mapped, src->format, &r, &g, &b, &a);
+        mapped = SDL_MapRGBA(dst->format, r, g, b, (a * alpha) >> 8);
+        switch(bpp) {
+          case 1:
+            *dstpixel = mapped;
+            break;
+          case 2:
+            *(Uint16 *)dstpixel = mapped;
+            break;
+          case 3:
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+            dstpixel[0] = (mapped >> 16) & 0xff;
+            dstpixel[1] = (mapped >> 8) & 0xff;
+            dstpixel[2] = (mapped >> 0) & 0xff;
+#else
+            dstpixel[0] = (mapped >> 0) & 0xff;
+            dstpixel[1] = (mapped >> 8) & 0xff;
+            dstpixel[2] = (mapped >> 16) & 0xff;
+#endif
+            break;
+          case 4:
+            *(Uint32 *)dstpixel = mapped;
+            break;
+        }
+      }
+    }
+    if(SDL_MUSTLOCK(dst))
+    {
+      SDL_UnlockSurface(dst);
+    }
+    if(SDL_MUSTLOCK(src))
+    {
+      SDL_UnlockSurface(src);
+    }
+    return dst;
+  }
+}
+
 namespace SDL
 {
   Renderer::Renderer()
   {
+    ::Renderer::instance_ = this;
+
     const SDL_VideoInfo *info = SDL_GetVideoInfo();
     log_info << "Hardware surfaces are " << (info->hw_available ? "" : "not ") << "available." << std::endl;
     log_info << "Hardware to hardware blits are " << (info->blit_hw ? "" : "not ") << "accelerated." << std::endl;
@@ -60,8 +145,9 @@ namespace SDL
     int flags = SDL_SWSURFACE | SDL_ANYFORMAT;
     if(config->use_fullscreen)
       flags |= SDL_FULLSCREEN;
-    int width = config->screenwidth;
-    int height = config->screenheight;
+    
+    int width  = 800; //FIXME: config->screenwidth;
+    int height = 600; //FIXME: config->screenheight;
 
     screen = SDL_SetVideoMode(width, height, 0, flags);
     if(screen == 0) {
@@ -71,6 +157,9 @@ namespace SDL
       throw std::runtime_error(msg.str());
     }
 
+    numerator   = 1;
+    denominator = 1;
+    /* FIXME: 
     float xfactor = (float) config->screenwidth / SCREEN_WIDTH;
     float yfactor = (float) config->screenheight / SCREEN_HEIGHT;
     if(xfactor < yfactor)
@@ -83,7 +172,7 @@ namespace SDL
       numerator = config->screenheight;
       denominator = SCREEN_HEIGHT;
     }
-
+    */
     if(texture_manager == 0)
       texture_manager = new TextureManager();
   }
@@ -116,7 +205,47 @@ namespace SDL
     dst_rect.x = (int) request.pos.x * numerator / denominator;
     dst_rect.y = (int) request.pos.y * numerator / denominator;
 
+    Uint8 alpha = 0;
+    if(request.alpha != 1.0)
+    {
+      if(!transform->format->Amask)
+      {
+        if(transform->flags & SDL_SRCALPHA)
+        {
+          alpha = transform->format->alpha;
+        }
+        else
+        {
+          alpha = 255;
+        }
+        SDL_SetAlpha(transform, SDL_SRCALPHA, (Uint8) (request.alpha * alpha));
+      }
+      /*else
+      {
+        transform = apply_alpha(transform, request.alpha);
+      }*/
+    }
+
     SDL_BlitSurface(transform, src_rect, screen, &dst_rect);
+
+    if(request.alpha != 1.0)
+    {
+      if(!transform->format->Amask)
+      {
+        if(alpha == 255)
+        {
+          SDL_SetAlpha(transform, SDL_RLEACCEL, 0);
+        }
+        else
+        {
+          SDL_SetAlpha(transform, SDL_SRCALPHA | SDL_RLEACCEL, alpha);
+        }
+      }
+      /*else
+      {
+        SDL_FreeSurface(transform);
+      }*/
+    }
   }
 
   void
@@ -167,7 +296,47 @@ namespace SDL
     dst_rect.x = (int) request.pos.x * numerator / denominator;
     dst_rect.y = (int) request.pos.y * numerator / denominator;
 
+    Uint8 alpha = 0;
+    if(request.alpha != 1.0)
+    {
+      if(!transform->format->Amask)
+      {
+        if(transform->flags & SDL_SRCALPHA)
+        {
+          alpha = transform->format->alpha;
+        }
+        else
+        {
+          alpha = 255;
+        }
+        SDL_SetAlpha(transform, SDL_SRCALPHA, (Uint8) (request.alpha * alpha));
+      }
+      /*else
+      {
+        transform = apply_alpha(transform, request.alpha);
+      }*/
+    }
+
     SDL_BlitSurface(transform, &src_rect, screen, &dst_rect);
+
+    if(request.alpha != 1.0)
+    {
+      if(!transform->format->Amask)
+      {
+        if(alpha == 255)
+        {
+          SDL_SetAlpha(transform, SDL_RLEACCEL, 0);
+        }
+        else
+        {
+          SDL_SetAlpha(transform, SDL_SRCALPHA | SDL_RLEACCEL, alpha);
+        }
+      }
+      /*else
+      {
+        SDL_FreeSurface(transform);
+      }*/
+    }
   }
 
   void
@@ -198,7 +367,7 @@ namespace SDL
         SDL_Surface *temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel, screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask);
 
         SDL_FillRect(temp, 0, color);
-        SDL_SetAlpha(temp, SDL_SRCALPHA, a);
+        SDL_SetAlpha(temp, SDL_SRCALPHA | SDL_RLEACCEL, a);
         SDL_BlitSurface(temp, 0, screen, &rect);
         SDL_FreeSurface(temp);
       }
@@ -206,15 +375,6 @@ namespace SDL
   }
 
   void
-  Renderer::draw_text(const DrawingRequest& request)
-  {
-    const TextRequest* textrequest = (TextRequest*) request.request_data;
-
-    textrequest->font->draw(this, textrequest->text, request.pos,
-        textrequest->alignment, request.drawing_effect, request.alpha);
-  }
-
-  void
   Renderer::draw_filled_rect(const DrawingRequest& request)
   {
     const FillRectRequest* fillrectrequest
@@ -236,12 +396,17 @@ namespace SDL
       SDL_Surface *temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel, screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask);
 
       SDL_FillRect(temp, 0, color);
-      SDL_SetAlpha(temp, SDL_SRCALPHA, a);
+      SDL_SetAlpha(temp, SDL_SRCALPHA | SDL_RLEACCEL, a);
       SDL_BlitSurface(temp, 0, screen, &rect);
       SDL_FreeSurface(temp);
     }
   }
 
+  void
+  Renderer::draw_inverse_ellipse(const DrawingRequest&)
+  {
+  }
+
   void 
   Renderer::do_take_screenshot()
   {
@@ -276,4 +441,10 @@ namespace SDL
   {
     SDL_Flip(screen);
   }
+
+  void
+  Renderer::resize(int, int)
+  {
+    
+  }
 }