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Enable BC6H compression for all HDR formats
Previously only RGBH formatted images were compressed to BC6H, this change enables BC6H compression also for the RH, RGH, and RGBE9995 formats, allowing 1:2, 1:4, and 1:4 size reduction for them, respectively. This is in particular important for HDRI images which usually come in RGBE9995 format.
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@ -145,7 +145,7 @@ void image_compress_cvtt(Image *p_image, float p_lossy_quality, Image::CompressS
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int h = p_image->get_height();
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bool is_ldr = (p_image->get_format() <= Image::FORMAT_RGBA8);
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bool is_hdr = (p_image->get_format() == Image::FORMAT_RGBH);
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bool is_hdr = (p_image->get_format() >= Image::FORMAT_RH) && (p_image->get_format() <= Image::FORMAT_RGBE9995);
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if (!is_ldr && !is_hdr) {
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return; // Not a usable source format
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@ -175,6 +175,10 @@ void image_compress_cvtt(Image *p_image, float p_lossy_quality, Image::CompressS
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bool is_signed = false;
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if (is_hdr) {
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if (p_image->get_format() != Image::FORMAT_RGBH) {
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p_image->convert(Image::FORMAT_RGBH);
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}
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PoolVector<uint8_t>::Read rb = p_image->get_data().read();
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const uint16_t *source_data = reinterpret_cast<const uint16_t *>(&rb[0]);
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