Experiment with endpoint refinement. Add Rich's encoder, not functional yet.

src/nvtt/BlockCompressor.cpp

@@ -214,7 +214,7 @@ void FastCompressorDXT1::compressBlock(Vector4 colors[16], float weights[16], co
 }
 void CompressorDXT1::compressBlock(Vector4 colors[16], float weights[16], const CompressionOptions::Private & compressionOptions, void * output)
 {
-    compress_dxt1(colors, weights, compressionOptions.colorWeight.xyz(), /*three_color_mode*/true, (BlockDXT1 *)output);
+    compress_dxt1(colors, weights, compressionOptions.colorWeight.xyz(), /*three_color_mode*/true, false, (BlockDXT1 *)output);
 }
 
 

src/nvtt/BlockCompressor.h

@@ -1,29 +1,5 @@
-// Copyright (c) 2009-2011 Ignacio Castano <castano@gmail.com>
-// Copyright (c) 2007-2009 NVIDIA Corporation -- Ignacio Castano <icastano@nvidia.com>
-// 
-// Permission is hereby granted, free of charge, to any person
-// obtaining a copy of this software and associated documentation
-// files (the "Software"), to deal in the Software without
-// restriction, including without limitation the rights to use,
-// copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the
-// Software is furnished to do so, subject to the following
-// conditions:
-// 
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-// 
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-// OTHER DEALINGS IN THE SOFTWARE.
-
-#ifndef NVTT_BLOCKCOMPRESSOR_H
-#define NVTT_BLOCKCOMPRESSOR_H
+
+#pragma once
 
 #include "Compressor.h"
 
@@ -189,6 +165,3 @@ namespace nv
 #endif
 
 } // nv namespace
-
-
-#endif // NVTT_BLOCKCOMPRESSOR_H

src/nvtt/CompressorDXT1.h

@@ -18,9 +18,15 @@ namespace nv {
     void compress_dxt1_cluster_fit(const Vector4 input_colors[16], const Vector3 * colors, const float * weights, int count, const Vector3 & color_weights, bool three_color_mode, BlockDXT1 * output);
 
     // Cluster fit end point selection.
-    float compress_dxt1(const Vector4 input_colors[16], const float input_weights[16], const Vector3 & color_weights, bool three_color_mode, BlockDXT1 * output);
+    float compress_dxt1(const Vector4 input_colors[16], const float input_weights[16], const Vector3 & color_weights, bool three_color_mode, bool hq, BlockDXT1 * output);
 
     // Quick end point selection followed by least squares refinement.
     float compress_dxt1_fast(const Vector4 input_colors[16], const float input_weights[16], const Vector3 & color_weights, BlockDXT1 * output);
 
+    // @@ Change these interfaces to take a pitch argument instead of assuming (4*4), just like CMP_Core.
+    void compress_dxt1_fast2(const unsigned char input_colors[16*4], BlockDXT1 * output);
+    void compress_dxt1_fast_geld(const unsigned char input_colors[16 * 4], BlockDXT1 * output);
+
+    float evaluate_dxt1_error(const unsigned char rgba_block[16 * 4], const BlockDXT1 * block, int decoder = 0);
+
 }

src/nvtt/CompressorDXT5_RGBM.cpp

@@ -59,7 +59,7 @@ float nv::compress_dxt5_rgbm(const Vector4 input_colors[16], const float input_w
     convert_to_rgbm(input_colors, input_weights, min_m, input_colors_rgbm, rgb_weights);
 
     // Compress RGB.
-    compress_dxt1(input_colors_rgbm, rgb_weights, Vector3(1), /*three_color_mode=*/false, &output->color);
+    compress_dxt1(input_colors_rgbm, rgb_weights, Vector3(1), /*three_color_mode=*/false, /*hq=*/false, &output->color);
 
     // Decompress RGB/M block.
     nv::ColorBlock RGB;