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<HTML><BODY><PRE> <STRONG>NAME</STRONG> <STRONG>fglIsTexture</STRONG> - determine if a name corresponds to a texture <STRONG>FORTRAN</STRONG> <STRONG>SPECIFICATION</STRONG> LOGICAL*1 <STRONG>fglIsTexture</STRONG>( INTEGER*4 <EM>texture</EM> ) <STRONG>PARAMETERS</STRONG> <EM>texture</EM> Specifies a value that may be the name of a texture. <STRONG>DESCRIPTION</STRONG> <STRONG>fglIsTexture</STRONG> returns <STRONG>GL_TRUE</STRONG> if <EM>texture</EM> is currently the name of a texture. If <EM>texture</EM> is zero, or is a non-zero value that is not currently the name of a texture, or if an error occurs, <STRONG>fglIsTexture</STRONG> returns <STRONG>GL_FALSE</STRONG>. <STRONG>NOTES</STRONG> <STRONG>fglIsTexture</STRONG> is available only if the GL version is 1.1 or greater. <STRONG>ERRORS</STRONG> <STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>fglIsTexture</STRONG> is executed between the execution of <STRONG>fglBegin</STRONG> and the corresponding execution of <STRONG>fglEnd</STRONG>. <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG> <STRONG>fglBindTexture</STRONG>, <STRONG>fglCopyTexImage1D</STRONG>, <STRONG>fglCopyTexImage2D</STRONG>, <STRONG>fglDeleteTextures</STRONG>, <STRONG>fglGenTextures</STRONG>, <STRONG>fglGet</STRONG>, <STRONG>fglGetTexParameter</STRONG>, <STRONG>fglTexImage1D</STRONG>, <STRONG>fglTexImage2D</STRONG>, <STRONG>fglTexParameter</STRONG></PRE></BODY></HTML>⌨️ 快捷键说明
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