When BASISD_SUPPORT_BC7 is defined and set to 0, we disable all the BC7 modes so the WebAssembly/Javascript transcoder doesn't get bloated. I'm going to disable BC7 mode 6 by default in the next minor update.
diff --git a/transcoder/basisu_transcoder.cpp b/transcoder/basisu_transcoder.cpp
index 0883c4f..56e892b 100644
--- a/transcoder/basisu_transcoder.cpp
+++ b/transcoder/basisu_transcoder.cpp
@@ -33,6 +33,16 @@
#define BASISD_SUPPORT_DXT5A 1
#endif
+// Disable all BC7 transcoders if necessary (useful when cross compiling to Javascript)
+#if defined(BASISD_SUPPORT_BC7) && !BASISD_SUPPORT_BC7
+ #ifndef BASISD_SUPPORT_BC7_MODE6_OPAQUE_ONLY
+ #define BASISD_SUPPORT_BC7_MODE6_OPAQUE_ONLY 0
+ #endif
+ #ifndef BASISD_SUPPORT_BC7_MODE5
+ #define BASISD_SUPPORT_BC7_MODE5 0
+ #endif
+#endif // !BASISD_SUPPORT_BC7
+
// BC7 mode 6 opaque only is the highest quality (compared to ETC1), but the tables are massive.
// For web/mobile use you probably should disable this.
#ifndef BASISD_SUPPORT_BC7_MODE6_OPAQUE_ONLY
