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GLExtensions improved: added support for WebGL compressed textures: S3TC, ETC{1,2}, PVRTC

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konstantin.matveyev 2020-11-26 13:58:42 +03:00
parent ddbed23537
commit 4b0bed8161
1 changed files with 13 additions and 5 deletions
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18
src/osg/GLExtensions.cpp
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@ -850,13 +850,21 @@ GLExtensions::GLExtensions(unsigned int in_contextID):
isTextureFilterAnisotropicSupported = validContext && isGLExtensionSupported(contextID,"GL_EXT_texture_filter_anisotropic");
isTextureSwizzleSupported = validContext && isGLExtensionSupported(contextID,"GL_ARB_texture_swizzle");
isTextureCompressionARBSupported = validContext && (builtInSupport || isGLExtensionOrVersionSupported(contextID,"GL_ARB_texture_compression", 1.3f));
isTextureCompressionS3TCSupported = validContext && (isGLExtensionSupported(contextID,"GL_EXT_texture_compression_s3tc") || isGLExtensionSupported(contextID, "GL_S3_s3tc"));
isTextureCompressionPVRTC2BPPSupported = validContext && isGLExtensionSupported(contextID,"GL_IMG_texture_compression_pvrtc");
isTextureCompressionS3TCSupported = validContext && (isGLExtensionSupported(contextID,"GL_EXT_texture_compression_s3tc") ||
isGLExtensionSupported(contextID, "GL_S3_s3tc") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_s3tc") ||
isGLExtensionSupported(contextID, "MOZ_WEBGL_compressed_texture_s3tc") ||
isGLExtensionSupported(contextID, "WEBKIT_WEBGL_compressed_texture_s3tc") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_s3tc_srgb") /* TODO: separate flag */);
isTextureCompressionPVRTC2BPPSupported = validContext && (isGLExtensionSupported(contextID,"GL_IMG_texture_compression_pvrtc") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_pvrtc"));
isTextureCompressionPVRTC4BPPSupported = isTextureCompressionPVRTC2BPPSupported;//covered by same extension
isTextureCompressionETCSupported = validContext && isGLExtensionSupported(contextID,"GL_OES_compressed_ETC1_RGB8_texture");
isTextureCompressionETC2Supported = validContext && isGLExtensionSupported(contextID,"GL_ARB_ES3_compatibility");
isTextureCompressionETCSupported = validContext && (isGLExtensionSupported(contextID, "GL_OES_compressed_ETC1_RGB8_texture") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_etc1"));
isTextureCompressionETC2Supported = validContext && (isGLExtensionSupported(contextID,"GL_ARB_ES3_compatibility") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_etc"));
isTextureCompressionRGTCSupported = validContext && isGLExtensionSupported(contextID,"GL_EXT_texture_compression_rgtc");
isTextureCompressionPVRTCSupported = validContext && isGLExtensionSupported(contextID,"GL_IMG_texture_compression_pvrtc");
isTextureCompressionPVRTCSupported = isTextureCompressionPVRTC2BPPSupported;//covered by same extension
isTextureMirroredRepeatSupported = validContext &&
(builtInSupport ||