drewcassidy/nvidia-texture-tools
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Some progress with full DXT1a support.

Browse Source 
Move quantization settings to compression options.
This commit is contained in:
castano
2008-01-07 07:28:00 +00:00
parent f3a73e3de5
commit 2903886498
8 changed files with 96 additions and 149 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
src/nvtt/CompressDXT.cpp
View File

@ -225,6 +225,37 @@ void nv::compressDXT1(const Image * image, const OutputOptions::Private & output
}
void nv::compressDXT1a(const Image * image, const OutputOptions::Private & outputOptions, const CompressionOptions::Private & compressionOptions)
{
const uint w = image->width();
const uint h = image->height();
ColorBlock rgba;
BlockDXT1 block;
doPrecomputation();
for (uint y = 0; y < h; y += 4) {
for (uint x = 0; x < w; x += 4) {
rgba.init(image, x, y);
// Compress color.
squish::WeightedClusterFit fit(&colours, squish::kDxt1);
squish::ClusterFit fit(&colours, squish::kDxt1);
fit.setMetric(compressionOptions.colorWeight.x(), compressionOptions.colorWeight.y(), compressionOptions.colorWeight.z());
fit.Compress(&block);
// @@ Use iterative cluster fit algorithm to improve error in highest quality mode.
if (outputOptions.outputHandler != NULL) {
outputOptions.outputHandler->writeData(&block, sizeof(block));
}
}
}
}
void nv::compressDXT3(const Image * image, const OutputOptions::Private & outputOptions, const CompressionOptions::Private & compressionOptions)
{
const uint w = image->width();