mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-20 04:34:48 +00:00
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#include "squish/squish.h"
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#include "gfx/bitmap/ddsFile.h"
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#include "gfx/bitmap/ddsUtils.h"
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//------------------------------------------------------------------------------
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// If false is returned, from this method, the source DDS is not modified
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bool DDSUtil::squishDDS( DDSFile *srcDDS, const GFXFormat dxtFormat )
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{
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// Sanity check
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if( srcDDS->mBytesPerPixel != 4 )
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{
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AssertFatal( false, "Squish wants 32-bit source data" );
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return false;
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}
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// Build flags, start with fast compress
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U32 squishFlags = squish::kColourRangeFit;
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// Flag which format we are using
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switch( dxtFormat )
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{
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case GFXFormatDXT1:
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squishFlags |= squish::kDxt1;
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break;
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case GFXFormatDXT2:
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case GFXFormatDXT3:
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squishFlags |= squish::kDxt3;
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break;
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case GFXFormatDXT4:
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case GFXFormatDXT5:
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squishFlags |= squish::kDxt5;
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break;
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default:
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AssertFatal( false, "Assumption failed" );
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return false;
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break;
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}
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// We got this far, so assume we can finish (gosh I hope so)
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srcDDS->mFormat = dxtFormat;
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srcDDS->mFlags.set( DDSFile::CompressedData );
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// If this has alpha, set the flag
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if( srcDDS->mFormat == GFXFormatR8G8B8A8 )
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squishFlags |= squish::kWeightColourByAlpha;
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// The source surface is the original surface of the file
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DDSFile::SurfaceData *srcSurface = srcDDS->mSurfaces.last();
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// Create a new surface, this will be the DXT compressed surface. Once we
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// are done, we can discard the old surface, and replace it with this one.
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DDSFile::SurfaceData *newSurface = new DDSFile::SurfaceData();
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for( int i = 0; i < srcDDS->mMipMapCount; i++ )
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{
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const U8 *srcBits = srcSurface->mMips[i];
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const U32 mipSz = srcDDS->getSurfaceSize(i);
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U8 *dstBits = new U8[mipSz];
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newSurface->mMips.push_back( dstBits );
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PROFILE_START(SQUISH_DXT_COMPRESS);
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// Compress with Squish
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squish::CompressImage( srcBits, srcDDS->getWidth(i), srcDDS->getHeight(i),
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dstBits, squishFlags );
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PROFILE_END();
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}
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// Now delete the source surface, and return.
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srcDDS->mSurfaces.pop_back();
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delete srcSurface;
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srcDDS->mSurfaces.push_back( newSurface );
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return true;
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}
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//------------------------------------------------------------------------------
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void DDSUtil::swizzleDDS( DDSFile *srcDDS, const Swizzle<U8, 4> &swizzle )
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{
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for( int i = 0; i < srcDDS->mMipMapCount; i++ )
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{
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swizzle.InPlace( srcDDS->mSurfaces.last()->mMips[i], srcDDS->getSurfaceSize( i ) );
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}
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} |