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From Bob Kuehne, updated extension/version checking for border clamp extension.

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This commit is contained in:
Robert Osfield
2004-04-16 10:05:57 +00:00
parent 3b4e0a419a
commit 884099b11c
1 changed files with 6 additions and 3 deletions
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9
src/osg/Texture.cpp
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@@ -1115,15 +1115,18 @@ void Texture::Extensions::lowestCommonDenominator(const Extensions& rhs)
void Texture::Extensions::setupGLExtenions()
{
_isMultiTexturingSupported = (strncmp((const char*)glGetString(GL_VERSION),"1.3",3)>=0) ||
float glVersion = atof( (const char *)glGetString( GL_VERSION ) );
_isMultiTexturingSupported = ( glVersion >= 1.3 ) ||
isGLExtensionSupported("GL_ARB_multitexture") ||
isGLExtensionSupported("GL_EXT_multitexture");
_isTextureFilterAnisotropicSupported = isGLExtensionSupported("GL_EXT_texture_filter_anisotropic");
_isTextureCompressionARBSupported = isGLExtensionSupported("GL_ARB_texture_compression");
_isTextureCompressionS3TCSupported = isGLExtensionSupported("GL_EXT_texture_compression_s3tc");
_isTextureMirroredRepeatSupported = isGLExtensionSupported("GL_IBM_texture_mirrored_repeat");
_isTextureEdgeClampSupported = isGLExtensionSupported("GL_EXT_texture_edge_clamp");
_isTextureEdgeClampSupported = ( glVersion >= 1.2 ) ||
isGLExtensionSupported("GL_EXT_texture_edge_clamp") ||
isGLExtensionSupported("GL_SGIS_texture_edge_clamp");
_isTextureBorderClampSupported = isGLExtensionSupported("GL_ARB_texture_border_clamp");
_isGenerateMipMapSupported = (strncmp((const char*)glGetString(GL_VERSION),"1.4",3)>=0) ||
isGLExtensionSupported("GL_SGIS_generate_mipmap");