86 lines
2.8 KiB
Diff
86 lines
2.8 KiB
Diff
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diff --git a/thirdparty/squish/colourblock.cpp b/thirdparty/squish/colourblock.cpp
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index af8b980365..f14c9362bd 100644
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--- a/thirdparty/squish/colourblock.cpp
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+++ b/thirdparty/squish/colourblock.cpp
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@@ -24,6 +24,9 @@
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-------------------------------------------------------------------------- */
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#include "colourblock.h"
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+// -- GODOT start --
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+#include "alpha.h"
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+// -- GODOT end --
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namespace squish {
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@@ -211,4 +214,34 @@ void DecompressColour( u8* rgba, void const* block, bool isDxt1 )
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}
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}
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+// -- GODOT start --
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+void DecompressColourBc4( u8* rgba, void const* block)
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+{
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+ DecompressAlphaDxt5(rgba,block);
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+ for ( int i = 0; i < 16; ++i ) {
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+ rgba[i*4] = rgba[i*4 + 3];
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+ rgba[i*4 + 1] = 0;
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+ rgba[i*4 + 2] = 0;
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+ rgba[i*4 + 3] = 255;
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+ }
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+}
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+
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+void DecompressColourBc5( u8* rgba, void const* block)
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+{
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+ void const* rblock = block;
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+ void const* gblock = reinterpret_cast< u8 const* >( block ) + 8;
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+ DecompressAlphaDxt5(rgba,rblock);
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+ for ( int i = 0; i < 16; ++i ) {
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+ rgba[i*4] = rgba[i*4 + 3];
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+ }
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+ DecompressAlphaDxt5(rgba,gblock);
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+ for ( int i = 0; i < 16; ++i ) {
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+ rgba[i*4+1] = rgba[i*4 + 3];
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+ rgba[i*4 + 2] = 0;
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+ rgba[i*4 + 3] = 255;
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+ }
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+}
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+// -- GODOT end --
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+
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+
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} // namespace squish
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diff --git a/thirdparty/squish/colourblock.h b/thirdparty/squish/colourblock.h
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index fee2cd7c5d..e1eb9e4917 100644
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--- a/thirdparty/squish/colourblock.h
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+++ b/thirdparty/squish/colourblock.h
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@@ -35,6 +35,10 @@ void WriteColourBlock3( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void*
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void WriteColourBlock4( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void* block );
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void DecompressColour( u8* rgba, void const* block, bool isDxt1 );
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+// -- GODOT start --
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+void DecompressColourBc4( u8* rgba, void const* block );
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+void DecompressColourBc5( u8* rgba, void const* block );
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+// -- GODOT end --
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} // namespace squish
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diff --git a/thirdparty/squish/squish.cpp b/thirdparty/squish/squish.cpp
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index 1d22a64ad6..086ba11cd0 100644
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--- a/thirdparty/squish/squish.cpp
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+++ b/thirdparty/squish/squish.cpp
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@@ -135,7 +135,15 @@ void Decompress( u8* rgba, void const* block, int flags )
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colourBlock = reinterpret_cast< u8 const* >( block ) + 8;
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// decompress colour
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- DecompressColour( rgba, colourBlock, ( flags & kDxt1 ) != 0 );
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+ // -- GODOT start --
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+ //DecompressColour( rgba, colourBlock, ( flags & kDxt1 ) != 0 );
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+ if(( flags & ( kBc4 ) ) != 0)
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+ DecompressColourBc4( rgba, colourBlock);
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+ else if(( flags & ( kBc5 ) ) != 0)
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+ DecompressColourBc5( rgba, colourBlock);
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+ else
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+ DecompressColour( rgba, colourBlock, ( flags & kDxt1 ) != 0 );
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+ // -- GODOT end --
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// decompress alpha separately if necessary
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if( ( flags & kDxt3 ) != 0 )
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