Removed retired function TFB_BlitSurface()

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@3681 8092fc87-c524-0410-9efc-e669fe64eaf9

sc2/src/libs/graphics/sdl/sdl_common.c

@@ -336,251 +336,6 @@ TFB_GetScreenCanvas (SCREEN screen)
 	return SDL_Screens[screen];
 }
 
-void
-TFB_BlitSurface (SDL_Surface *src, SDL_Rect *srcrect, SDL_Surface *dst,
-		SDL_Rect *dstrect, int blend_numer, int blend_denom)
-{
-	BOOLEAN has_colorkey;
-	int x, y, x1, y1, x2, y2, dst_x2, dst_y2, nr, ng, nb;
-	int srcx, srcy, w, h;
-	Uint8 sr, sg, sb, dr, dg, db;
-	Uint32 src_pixval, dst_pixval, colorkey;
-	GetPixelFn src_getpix, dst_getpix;
-	PutPixelFn putpix;
-	SDL_Rect fulldst;
-
-	if (blend_numer == blend_denom)
-	{
-		// normal blit: dst = src
-		
-		// log_add (log_Debug, "normal blit\n");
-		SDL_BlitSurface (src, srcrect, dst, dstrect);
-		return;
-	}
-		
-	// NOTE: following clipping code is copied from SDL-1.2.4 sources
-
-	// If the destination rectangle is NULL, use the entire dest surface
-	if (dstrect == NULL)
-	{
-		fulldst.x = fulldst.y = 0;
-		dstrect = &fulldst;
-	}
-
-	// clip the source rectangle to the source surface
-	if (srcrect)
-	{
-		int maxw, maxh;
-
-		srcx = srcrect->x;
-		w = srcrect->w;
-		if (srcx < 0) 
-		{
-			w += srcx;
-			dstrect->x -= srcx;
-			srcx = 0;
-		}
-		maxw = src->w - srcx;
-		if (maxw < w)
-			w = maxw;
-
-		srcy = srcrect->y;
-		h = srcrect->h;
-		if (srcy < 0) 
-		{
-			h += srcy;
-			dstrect->y -= srcy;
-			srcy = 0;
-		}
-		maxh = src->h - srcy;
-		if (maxh < h)
-			h = maxh;
-	}
-	else
-	{
-		srcx = 0;
-		srcy = 0;
-		w = src->w;
-		h = src->h;
-	}
-
-	// clip the destination rectangle against the clip rectangle
-	{
-		SDL_Rect *clip = &dst->clip_rect;
-		int dx, dy;
-
-		dx = clip->x - dstrect->x;
-		if (dx > 0)
-		{
-			w -= dx;
-			dstrect->x += dx;
-			srcx += dx;
-		}
-		dx = dstrect->x + w - clip->x - clip->w;
-		if (dx > 0)
-			w -= dx;
-
-		dy = clip->y - dstrect->y;
-		if (dy > 0)
-		{
-			h -= dy;
-			dstrect->y += dy;
-			srcy += dy;
-		}
-		dy = dstrect->y + h - clip->y - clip->h;
-		if (dy > 0)
-			h -= dy;
-	}
-
-	dstrect->w = w;
-	dstrect->h = h;
-
-	if (w <= 0 || h <= 0)
-		return;
-
-	x1 = srcx;
-	y1 = srcy;
-	x2 = srcx + w;
-	y2 = srcy + h;
-
-	if (src->flags & SDL_SRCCOLORKEY)
-	{
-		has_colorkey = TRUE;
-		colorkey = src->format->colorkey;
-	}
-	else
-	{
-		has_colorkey = FALSE;
-		colorkey = 0;  /* Satisfying compiler */
-	}
-
-	src_getpix = getpixel_for (src);
-	dst_getpix = getpixel_for (dst);
-	putpix = putpixel_for (dst);
-
-	if (blend_denom < 0)
-	{
-		// additive blit: dst = src + dst
-#if 0
-		log_add (log_Debug, "additive blit %d %d, src %d %d %d %d dst %d %d,"
-				" srcbpp %d", blend_numer, blend_denom, x1, y1, x2, y2,
-				dstrect->x, dstrect->y, src->format->BitsPerPixel);
-#endif		
-		for (y = y1; y < y2; ++y)
-		{
-			dst_y2 = dstrect->y + (y - y1);
-			for (x = x1; x < x2; ++x)
-			{
-				dst_x2 = dstrect->x + (x - x1);
-				src_pixval = src_getpix (src, x, y);
-
-				if (has_colorkey && src_pixval == colorkey)
-					continue;
-
-				dst_pixval = dst_getpix (dst, dst_x2, dst_y2);
-				
-				SDL_GetRGB (src_pixval, src->format, &sr, &sg, &sb);
-				SDL_GetRGB (dst_pixval, dst->format, &dr, &dg, &db);
-
-				nr = sr + dr;
-				ng = sg + dg;
-				nb = sb + db;
-
-				if (nr > 255)
-					nr = 255;
-				if (ng > 255)
-					ng = 255;
-				if (nb > 255)
-					nb = 255;
-
-				putpix (dst, dst_x2, dst_y2,
-						SDL_MapRGB (dst->format, nr, ng, nb));
-			}
-		}
-	}
-	else if (blend_numer < 0)
-	{
-		// subtractive blit: dst = src - dst
-#if 0
-		log_add (log_Debug, "subtractive blit %d %d, src %d %d %d %d"
-				" dst %d %d, srcbpp %d", blend_numer, blend_denom,
-					x1, y1, x2, y2, dstrect->x, dstrect->y,
-					src->format->BitsPerPixel);
-#endif		
-		for (y = y1; y < y2; ++y)
-		{
-			dst_y2 = dstrect->y + (y - y1);
-			for (x = x1; x < x2; ++x)
-			{
-				dst_x2 = dstrect->x + (x - x1);
-				src_pixval = src_getpix (src, x, y);
-
-				if (has_colorkey && src_pixval == colorkey)
-					continue;
-
-				dst_pixval = dst_getpix (dst, dst_x2, dst_y2);
-
-				SDL_GetRGB (src_pixval, src->format, &sr, &sg, &sb);
-				SDL_GetRGB (dst_pixval, dst->format, &dr, &dg, &db);
-
-				nr = sr - dr;
-				ng = sg - dg;
-				nb = sb - db;
-
-				if (nr < 0)
-					nr = 0;
-				if (ng < 0)
-					ng = 0;
-				if (nb < 0)
-					nb = 0;
-
-				putpix (dst, dst_x2, dst_y2,
-						SDL_MapRGB (dst->format, nr, ng, nb));
-			}
-		}
-	}
-	else 
-	{
-		// modulated blit: dst = src * (blend_numer / blend_denom) 
-
-		float f = blend_numer / (float)blend_denom;
-#if 0
-		log_add (log_Debug, "modulated blit %d %d, f %f, src %d %d %d %d"
-				" dst %d %d, srcbpp %d\n", blend_numer, blend_denom, f,
-				x1, y1, x2, y2, dstrect->x, dstrect->y,
-				src->format->BitsPerPixel);
-#endif		
-		for (y = y1; y < y2; ++y)
-		{
-			dst_y2 = dstrect->y + (y - y1);
-			for (x = x1; x < x2; ++x)
-			{
-				dst_x2 = dstrect->x + (x - x1);
-				src_pixval = src_getpix (src, x, y);
-
-				if (has_colorkey && src_pixval == colorkey)
-					continue;
-				
-				SDL_GetRGB (src_pixval, src->format, &sr, &sg, &sb);
-
-				nr = (int)(sr * f);
-				ng = (int)(sg * f);
-				nb = (int)(sb * f);
-
-				if (nr > 255)
-					nr = 255;
-				if (ng > 255)
-					ng = 255;
-				if (nb > 255)
-					nb = 255;
-
-				putpix (dst, dst_x2, dst_y2,
-						SDL_MapRGB (dst->format, nr, ng, nb));
-			}
-		}
-	}
-}
-
 void
 TFB_UploadTransitionScreen (void)
 {