- allow specifying actor classes whose graphics to precache through MAPINFO.

- some reorganization of texture precaching so that the renderer can decide what to do with actors.

Just marking the sprite textures loses too much info if more is needed than just loading the images into memory.

src/r_swrenderer.cpp

@@ -98,6 +98,55 @@ void FSoftwareRenderer::PrecacheTexture(FTexture *tex, int cache)
 	}
 }
 
+void FSoftwareRenderer::Precache(BYTE *texhitlist, TMap<PClassActor*, bool> &actorhitlist)
+{
+	BYTE *spritelist = new BYTE[sprites.Size()];
+	TMap<PClassActor*, bool>::Iterator it(actorhitlist);
+	TMap<PClassActor*, bool>::Pair *pair;
+
+	memset(spritelist, 0, sprites.Size());
+
+	while (it.NextPair(pair))
+	{
+		PClassActor *cls = pair->Key;
+
+		for (int i = 0; i < cls->NumOwnedStates; i++)
+		{
+			spritelist[cls->OwnedStates[i].sprite] = true;
+		}
+	}
+
+	// Precache textures (and sprites).
+
+	for (int i = (int)(sprites.Size() - 1); i >= 0; i--)
+	{
+		if (spritelist[i])
+		{
+			int j, k;
+			for (j = 0; j < sprites[i].numframes; j++)
+			{
+				const spriteframe_t *frame = &SpriteFrames[sprites[i].spriteframes + j];
+
+				for (k = 0; k < 16; k++)
+				{
+					FTextureID pic = frame->Texture[k];
+					if (pic.isValid())
+					{
+						texhitlist[pic.GetIndex()] = FTextureManager::HIT_Sprite;
+					}
+				}
+			}
+		}
+	}
+	delete[] spritelist;
+
+	int cnt = TexMan.NumTextures();
+	for (int i = cnt - 1; i >= 0; i--)
+	{
+		PrecacheTexture(TexMan.ByIndex(i), texhitlist[i]);
+	}
+}
+
 //===========================================================================
 //
 // Render the view