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https://github.com/QB64-Phoenix-Edition/QB64pe.git
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6e01fc8dce
Added new _STRCMP and _STRICMP commands for quick string comparisons. Cleaned up QB64 to finish removing the QUI (quick user insert) code and folders. Altered UCASE and LCASE routines to be faster in some situations for us.
29 lines
1 KiB
Plaintext
29 lines
1 KiB
Plaintext
'''_glIsTexture:''' determine if a name corresponds to a texture
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{{PageSyntax}}
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FUNCTION _glIsTexture~%% (BYVAL texture AS _UNSIGNED LONG)
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GLboolean '''_glIsTexture'''(GLuint {{Parameter|texture}});
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; texture
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: Specifies a value that may be the name of a texture.
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{{PageDescription}}
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'''_glIsTexture''' returns {{KW|_GL_TRUE}} if {{Parameter|texture}} is currently the name of a texture. If {{Parameter|texture}} is zero, or is a non-zero value that is not currently the name of a texture, or if an error occurs, '''_glIsTexture''' returns {{KW|_GL_FALSE}}.
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A name returned by {{KW|_glGenTextures}}, but not yet associated with a texture by calling {{KW|_glBindTexture}}, is not the name of a texture.
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{{PageSeeAlso}}
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{{KW|_GL}}
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{{KW|_glBindTexture}}, {{KW|_glDeleteTextures}}, {{KW|_glGenTextures}}
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{{PageCopyright}}
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Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see [http://oss.sgi.com/projects/FreeB/ http://oss.sgi.com/projects/FreeB/]. |