增加第三方库NvTriStrip

3rdpty/NvTriStrip/VertexCache.h

@@ -0,0 +1,79 @@
+#ifndef VERTEX_CACHE_H
+#define VERTEX_CACHE_H
+
+#include<string.h>
+
+namespace NvTriStrip
+{
+    class VertexCache
+    {	
+    public:
+	
+	    VertexCache(int size)
+	    {
+		    numEntries = size;
+		
+		    entries = new int[numEntries];
+		
+		    for(int i = 0; i < numEntries; i++)
+			    entries[i] = -1;
+	    }
+		
+	    VertexCache() { VertexCache(16); }
+	    ~VertexCache() { delete[] entries; entries = nullptr; }
+	
+	    bool InCache(int entry)
+	    {
+		    bool returnVal = false;
+		    for(int i = 0; i < numEntries; i++)
+		    {
+			    if(entries[i] == entry)
+			    {
+				    returnVal = true;
+				    break;
+			    }
+		    }
+		
+		    return returnVal;
+	    }
+	
+	    int AddEntry(int entry)
+	    {
+		    int removed;
+		
+		    removed = entries[numEntries - 1];
+		
+		    //push everything right one
+		    for(int i = numEntries - 2; i >= 0; i--)
+		    {
+			    entries[i + 1] = entries[i];
+		    }
+		
+		    entries[0] = entry;
+		
+		    return removed;
+	    }
+
+	    void Clear()
+	    {
+		    memset(entries, -1, sizeof(int) * numEntries);
+	    }
+	
+	    void Copy(VertexCache* inVcache) 
+	    {
+		    for(int i = 0; i < numEntries; i++)
+		    {
+			    inVcache->Set(i, entries[i]);
+		    }
+	    }
+
+	    int At(int index) { return entries[index]; }
+	    void Set(int index, int value) { entries[index] = value; }
+
+    private:
+
+      int *entries;
+      int numEntries;
+    };
+}//namespace NvTriStrip
+#endif