GLAPI/glBindTexture

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glBindTexture
Core in version 4.4
Core since version 1.1

glBindTexture: bind a named texture to a texturing target

Function Definition

 void glBindTexture(GLenum target​, GLuint texture​);
target
Specifies the target to which the texture is bound. Must be either GL_TEXTURE_1D​, GL_TEXTURE_2D​, GL_TEXTURE_3D​, or GL_TEXTURE_1D_ARRAY​, GL_TEXTURE_2D_ARRAY​, GL_TEXTURE_RECTANGLE​, GL_TEXTURE_CUBE_MAP​, GL_TEXTURE_2D_MULTISAMPLE​, GL_TEXTURE_2D_MULTISAMPLE_ARRAY​, GL_TEXTURE_BUFFER​, or GL_TEXTURE_CUBE_MAP_ARRAY​.
texture
Specifies the name of a texture.

Description

glBindTexture lets you create or use a named texture. Calling glBindTexture with target​ set to GL_TEXTURE_1D​, GL_TEXTURE_2D​, GL_TEXTURE_3D​, GL_TEXTURE_1D_ARRAY​, GL_TEXTURE_2D_ARRAY​, GL_TEXTURE_RECTANGLE​, GL_TEXTURE_CUBE_MAP​, GL_TEXTURE_CUBE_MAP_ARRAY​, GL_TEXTURE_BUFFER​, GL_TEXTURE_2D_MULTISAMPLE​ or GL_TEXTURE_2D_MULTISAMPLE_ARRAY​ and texture​ set to the name of the new texture binds the texture name to the target. When a texture is bound to a target, the previous binding for that target is automatically broken.

Texture names are unsigned integers. The value zero is reserved to represent the default texture for each texture target. Texture names and the corresponding texture contents are local to the shared object space of the current GL rendering context; two rendering contexts share texture names only if they explicitly enable sharing between contexts through the appropriate GL windows interfaces functions.

You must use glGenTextures to generate a set of new texture names.

When a texture is first bound, it assumes the specified target: A texture first bound to GL_TEXTURE_1D​ becomes one-dimensional texture, a texture first bound to GL_TEXTURE_2D​ becomes two-dimensional texture, a texture first bound to GL_TEXTURE_3D​ becomes three-dimensional texture, a texture first bound to GL_TEXTURE_1D_ARRAY​ becomes one-dimensional array texture, a texture first bound to GL_TEXTURE_2D_ARRAY​ becomes two-dimensional arary texture, a texture first bound to GL_TEXTURE_RECTANGLE​ becomes rectangle texture, a texture first bound to GL_TEXTURE_CUBE_MAP​ becomes a cube-mapped texture, a texture first bound to GL_TEXTURE_CUBE_MAP_ARRAY​ becomes a cube-mapped array texture, a texture first bound to GL_TEXTURE_BUFFER​ becomes a buffer texture, a texture first bound to GL_TEXTURE_2D_MULTISAMPLE​ becomes a two-dimensional multisampled texture, and a texture first bound to GL_TEXTURE_2D_MULTISAMPLE_ARRAY​ becomes a two-dimensional multisampled array texture. The state of a one-dimensional texture immediately after it is first bound is equivalent to the state of the default GL_TEXTURE_1D​ at GL initialization, and similarly for the other texture types.

While a texture is bound, GL operations on the target to which it is bound affect the bound texture, and queries of the target to which it is bound return state from the bound texture. In effect, the texture targets become aliases for the textures currently bound to them, and the texture name zero refers to the default textures that were bound to them at initialization.

A texture binding created with glBindTexture remains active until a different texture is bound to the same target, or until the bound texture is deleted with glDeleteTextures.

Once created, a named texture may be re-bound to its same original target as often as needed. It is usually much faster to use glBindTexture to bind an existing named texture to one of the texture targets than it is to reload the texture image using glTexImage1D, glTexImage2D, glTexImage3D or another similar function.

Notes

The GL_TEXTURE_2D_MULTISAMPLE​ and GL_TEXTURE_2D_MULTISAMPLE_ARRAY​ targets are available only if the GL version is 3.2 or higher.

Errors

GL_INVALID_ENUM​ is generated if target​ is not one of the allowable values.

GL_INVALID_VALUE​ is generated if target​ is not a name returned from a previous call to glGenTextures.

GL_INVALID_OPERATION​ is generated if texture​ was previously created with a target that doesn't match that of target​.

Associated Gets

glGet with argument GL_TEXTURE_BINDING_1D​, GL_TEXTURE_BINDING_2D​, GL_TEXTURE_BINDING_3D​, GL_TEXTURE_BINDING_1D_ARRAY​, GL_TEXTURE_BINDING_2D_ARRAY​, GL_TEXTURE_BINDING_RECTANGLE​, GL_TEXTURE_BINDING_BUFFER​, GL_TEXTURE_BINDING_CUBE_MAP​, GL_TEXTURE_BINDING_CUBE_MAP​, GL_TEXTURE_BINDING_CUBE_MAP_ARRAY​, GL_TEXTURE_BINDING_2D_MULTISAMPLE​, or GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY​.

See Also

glBindTextures, glActiveTexture, glDeleteTextures, glGenTextures, glGetTexParameter, glIsTexture, glTexParameter

Copyright

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/.