Disable gltfio mipmapping

libs/gltfio/src/StbProvider.cpp

@@ -99,7 +99,7 @@ Texture* StbProvider::pushTexture(const uint8_t* data, size_t byteCount,
     Texture* texture = Texture::Builder()
             .width(width)
             .height(height)
-            .levels(0xff)
+            .levels(1)
             .format(any(flags & TextureFlags::sRGB) ? InternalFormat::SRGB8_A8 : InternalFormat::RGBA8)
             .build(*mEngine);
 
@@ -190,7 +190,7 @@ void StbProvider::updateQueue() {
 
             // Call generateMipmaps unconditionally to fulfill the promise of the TextureProvider
             // interface. Providers of hierarchical images (e.g. KTX) call this only if needed.
-            texture->generateMipmaps(*mEngine);
+            // texture->generateMipmaps(*mEngine);
 
             info->state = TextureState::READY;
             ++mDecodedCount;

libs/ktxreader/src/Ktx1Reader.cpp

@@ -27,7 +27,7 @@ Texture* createTexture(Engine* engine, const Ktx1Bundle& ktx, bool srgb,
         Callback callback, void* userdata) {
     using Sampler = Texture::Sampler;
     const auto& ktxinfo = ktx.getInfo();
-    const uint32_t nmips = ktx.getNumMipLevels();
+    const uint32_t nmips = /* ktx.getNumMipLevels() */ 1;
     const auto cdatatype = toCompressedPixelDataType(ktxinfo);
     const auto datatype = toPixelDataType(ktxinfo);
     const auto dataformat = toPixelDataFormat(ktxinfo);

libs/ktxreader/src/Ktx2Reader.cpp

@@ -247,7 +247,7 @@ Texture* Ktx2Reader::load(const void* data, size_t size, TransferFunction transf
     ktx2_transcoder_state basisThreadState;
     basisThreadState.clear();
 
-    for (uint32_t levelIndex = 0, n = mTranscoder->get_levels(); levelIndex < n; levelIndex++) {
+    for (uint32_t levelIndex = 0, n = 1 /*mTranscoder->get_levels()*/; levelIndex < n; levelIndex++) {
         Texture::PixelBufferDescriptor* pbd;
         Result result = transcodeImageLevel(*mTranscoder, basisThreadState, texture->getFormat(),
                 levelIndex, &pbd);
@@ -275,7 +275,7 @@ FAsync::~FAsync() {
 Result FAsync::doTranscoding() {
     ktx2_transcoder_state basisThreadState;
     basisThreadState.clear();
-    for (uint32_t levelIndex = 0, n = mTranscoder->get_levels(); levelIndex < n; levelIndex++) {
+    for (uint32_t levelIndex = 0, n = 1 /*mTranscoder->get_levels()*/; levelIndex < n; levelIndex++) {
         Texture::PixelBufferDescriptor* pbd;
         Result result = transcodeImageLevel(*mTranscoder, basisThreadState, mTexture->getFormat(),
                 levelIndex, &pbd);
@@ -385,7 +385,7 @@ Texture* Ktx2Reader::createTexture(ktx2_transcoder* transcoder, const void* data
         }
         const uint32_t layerIndex = 0;
         const uint32_t faceIndex = 0;
-        for (uint32_t levelIndex = 0; levelIndex < transcoder->get_levels(); levelIndex++) {
+        for (uint32_t levelIndex = 0; levelIndex < 1 /*transcoder->get_levels()*/; levelIndex++) {
             basist::ktx2_image_level_info info;
             if (!transcoder->get_image_level_info(info, levelIndex, layerIndex, faceIndex)) {
                 continue;
@@ -406,7 +406,7 @@ Texture* Ktx2Reader::createTexture(ktx2_transcoder* transcoder, const void* data
     Texture* texture = Texture::Builder()
         .width(transcoder->get_width())
         .height(transcoder->get_height())
-        .levels(transcoder->get_levels())
+        .levels(1)
         .sampler(Texture::Sampler::SAMPLER_2D)
         .format(resolvedFormat)
         .build(mEngine);