glClientActiveTexture — select active texture unit
void glClientActiveTexture( | GLenum | texture); |
texture Specifies which texture unit to make active. The number of texture units is implementation dependent, but must be at least two. texture must be one of GL_TEXTURE, where i ranges from 0 to the value of GL_MAX_TEXTURE_COORDS - 1, which is an implementation-dependent value. The initial value is GL_TEXTURE0.
glClientActiveTexture selects the vertex array client state parameters to be modified by glTexCoordPointer, and enabled or disabled with glEnableClientState or glDisableClientState, respectively, when called with a parameter of GL_TEXTURE_COORD_ARRAY.
glClientActiveTexture is supported only if the GL version is 1.3 or greater, or ARB_multitexture is included in the string returned by glGetString when called with the argument GL_EXTENSIONS.
GL_INVALID_ENUM is generated if texture is not one of GL_TEXTURE, where i ranges from 0 to the value of GL_MAX_TEXTURE_COORDS - 1.
glActiveTexture, glDisableClientState, glEnableClientState, glMultiTexCoord, glTexCoordPointer
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