2011-12-27 21:18:07 +00:00
commit 9f98ea7e22
192 changed files with 77747 additions and 0 deletions
@@ -0,0 +1,66 @@
+// File: crn_dxt5a.h
+// See Copyright Notice and license at the end of inc/crnlib.h
+#pragma once
+#include "crn_dxt.h"
+
+namespace crnlib
+{
+   class dxt5_endpoint_optimizer
+   {
+   public:
+      dxt5_endpoint_optimizer();
+
+      struct params
+      {
+         params() :
+            m_block_index(0),
+            m_pPixels(NULL),
+            m_num_pixels(0),
+            m_comp_index(3),
+            m_quality(cCRNDXTQualityUber),
+            m_use_both_block_types(true)
+         {
+         }
+
+         uint                 m_block_index;
+
+         const color_quad_u8* m_pPixels;
+         uint                 m_num_pixels;
+         uint                 m_comp_index;
+
+         crn_dxt_quality      m_quality;
+
+         bool                 m_use_both_block_types;
+      };
+
+      struct results
+      {
+         uint8*   m_pSelectors;
+
+         uint64   m_error;
+
+         uint8    m_first_endpoint;
+         uint8    m_second_endpoint;
+
+         uint8    m_block_type; // 1 if 6-alpha, otherwise 8-alpha
+      };
+
+      bool compute(const params& p, results& r);
+
+   private:
+      const params*  m_pParams;
+      results*       m_pResults;
+
+      crnlib::vector<uint8> m_unique_values;
+      crnlib::vector<uint> m_unique_value_weights;
+
+      crnlib::vector<uint8> m_trial_selectors;
+      crnlib::vector<uint8> m_best_selectors;
+      int m_unique_value_map[256];
+
+      sparse_bit_array m_flags;
+
+      void evaluate_solution(uint low_endpoint, uint high_endpoint);
+   };
+
+} // namespace crnlib