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Log images containing data depending on an extension.

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Print a descriptive warning on images that are given
in a texture format that do only work in presence of an
extension that might not be there at runtime.
This commit is contained in:
Mathias Froehlich
2012-01-08 23:16:57 +01:00
parent 423eba3733
commit 8fc97ea1ce
1 changed files with 41 additions and 0 deletions
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41
simgear/scene/model/ModelRegistry.cxx
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@@ -231,6 +231,47 @@ ModelRegistry::readImage(const string& fileName,
SG_LOG(SG_IO, SG_BULK, "Reading image \""
<< res.getImage()->getFileName() << "\"");
// Check for precompressed textures that depend on an extension
switch (res.getImage()->getPixelFormat()) {
// GL_EXT_texture_compression_s3tc
// patented, no way to decompress these
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
// GL_EXT_texture_sRGB
// patented, no way to decompress these
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
// GL_TDFX_texture_compression_FXT1
// can decompress these in software but
// no code present in simgear.
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
// GL_EXT_texture_compression_rgtc
// can decompress these in software but
// no code present in simgear.
case GL_COMPRESSED_RED_RGTC1_EXT:
case GL_COMPRESSED_SIGNED_RED_RGTC1_EXT:
case GL_COMPRESSED_RED_GREEN_RGTC2_EXT:
case GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT:
SG_LOG(SG_IO, SG_ALERT, "Image \"" << res.getImage()->getFileName()
<< "\" contains non portable compressed textures.\n"
"Usage of these textures depend on an extension that"
" is not guaranteed to be present.");
break;
default:
break;
}
return res;
}
}