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- fixing tinydds so it writes the correct flags, so dds-ktx can view our DDS files

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- upping WebGL KTX2 encoder/transcoder testbed so its max Memory64/WASM64 heap size is 15GB, so 4096x4096 textures can be encoded
This commit is contained in:
Richard Geldreich
2026-03-20 17:34:22 -04:00
parent 74ba7f4f6b
commit 08fabab89f
20 changed files with 21 additions and 15 deletions
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2
webgl/encoder/CMakeLists.txt
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@@ -123,7 +123,7 @@ if(EMSCRIPTEN)
endif()
if(${use_wasm64})
set(_lf "${_lf} ${LINK_WASM64} -s INITIAL_MEMORY=1073741824 -s MAXIMUM_MEMORY=12884901888")
set(_lf "${_lf} ${LINK_WASM64} -s INITIAL_MEMORY=1073741824 -s MAXIMUM_MEMORY=16106127360")
endif()
set_target_properties(${target} PROPERTIES LINK_FLAGS "${_lf}")

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webgl/encoder/build/basis_encoder.wasm
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webgl/encoder/build/basis_encoder_threads.wasm
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webgl/encoder/build/basis_encoder_threads_wasm64.js
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webgl/encoder/build/basis_encoder_threads_wasm64.wasm
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4
webgl/ktx2_encode_test/index.html
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@@ -2435,7 +2435,7 @@
<br>
<div style="font-size: 24pt; font-weight: bold">
Basis Universal .KTX2 Supercompressed GPU Texture Encoding/Transcoding Testbed v2.18
Basis Universal .KTX2 Supercompressed GPU Texture Encoding/Transcoding Testbed v2.19
</div>
<br>This simple demo uses the <a href="https://github.com/BinomialLLC/basis_universal/">Basis Universal</a> C++ transcoder (compiled to WebAssembly using Emscripten) to transcode a .ktx2 file to:
@@ -2445,7 +2445,7 @@
Thanks to Evan Parker for providing <a href="https://github.com/toji/webgl-texture-utils">webgl-texture-utils</a> and this test bed. <a href="../index.html">Go back.</a>
Notes: Enable your browser debug console (F12 on Chrome/Firefox) to see debug output.
The largest image resolution that can be compressed in the browser with
this library is limited to either 12 megapixels or 4 megapixels (depending on format and WASM64/WASM32) to avoid running out of WASM memory.
this library is limited to either 16 megapixels or 4 megapixels (depending on format and WASM64/WASM32) to avoid running out of WASM memory.
<br><br>
<div id="supported-formats">

4
webgl/transcoder/basis_wrappers.cpp
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@@ -35,8 +35,8 @@
// 32-bit WASM limitation (TODO: remove for 64-bit), to prevent OOM crashes during HDR encoding in particular.
// TODO: Even WASM64 in Chrome has limits which seem too low for us. For now, just impose this limit.
#ifdef __wasm64__
#define BASISU_ENCODER_MAX_SOURCE_IMAGE_PIXELS (1024*1024*12)
#define BASISU_ENCODER_MAX_SOURCE_IMAGE_PIXELS_HIGHER_LIMIT (1024*1024*12)
#define BASISU_ENCODER_MAX_SOURCE_IMAGE_PIXELS (1024*1024*16)
#define BASISU_ENCODER_MAX_SOURCE_IMAGE_PIXELS_HIGHER_LIMIT (1024*1024*16)
#else
#define BASISU_ENCODER_MAX_SOURCE_IMAGE_PIXELS (1024*1024*4)
#define BASISU_ENCODER_MAX_SOURCE_IMAGE_PIXELS_HIGHER_LIMIT (1024*1024*12)