posttransformanalyzer: Cleanup statistics

Remove redundant fields, rename misses to vertices_transformed.

src/meshoptimizer.hpp

@@ -45,8 +45,7 @@ void optimizePreTransform(void* destination, const void* vertices, unsigned int*
 
 struct PostTransformCacheStatistics
 {
-	unsigned int hits, misses;
-	float hit_percent, miss_percent;
+	unsigned int vertices_transformed;
 	float acmr; // transformed vertices / triangle count; best case 0.5, worst case 3.0, optimum depends on topology
 	float atvr; // transformed vertices / vertex count; best case 1.0, worse case 6.0, optimum is 1.0 (each vertex is transformed once)
 };
@@ -61,7 +60,7 @@ struct OverdrawStatistics
 {
 	unsigned int pixels_covered;
 	unsigned int pixels_shaded;
-	float overdraw;
+	float overdraw; // shaded pixels / covered pixels; best case 1.0
 };
 
 // Overdraw analyzer

src/posttransformanalyzer.cpp

@@ -20,17 +20,12 @@ namespace
 			{
 				// cache miss
 				cache_time_stamps[index] = time_stamp++;
-				result.misses++;
+				result.vertices_transformed++;
 			}
 		}
 
-		result.hits = static_cast<unsigned int>(index_count) - result.misses;
-
-		result.hit_percent = 100 * static_cast<float>(result.hits) / index_count;
-		result.miss_percent = 100 * static_cast<float>(result.misses) / index_count;
-
-		result.acmr = static_cast<float>(result.misses) / (index_count / 3);
-		result.atvr = static_cast<float>(result.misses) / vertex_count;
+		result.acmr = static_cast<float>(result.vertices_transformed) / (index_count / 3);
+		result.atvr = static_cast<float>(result.vertices_transformed) / vertex_count;
 
 		return result;
 	}