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Asked: 2026-05-16T15:45:50+00:00

Does glTexParamter act on all textures globally or only the texture that is currently

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Does glTexParamter act on all textures globally or only the texture that is currently bound.

For example, if I call this at the texture load:

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

And this on another texture load:

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);

When I bind the first texture will it just use the last value I set (GL_CLAMP) or will it use the values originally set when the texture was bound?

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1 Answer

  1. Editorial Team

    From the OpenGL FAQ:

    21.070 How do texture objects work?

    Texture objects store texture maps and their associated texture parameter state. They allow switching between textures with a single call to glBindTexture().

    (…)

    The following functions affect and store state in texture objects: glTexImage*(), glTexSubImage*(), glCopyTexImage*(), glCopyTexSubImage*(), glTexParameter*(), and glPrioritizeTextures(). Since the GLU routines for building mipmap pyramids ultimately call glTexImage*(), they also affect texture object state.Noticeably absent from this list are glTexEnv*() and glTexGen*(); they do not store state in texture objects.

    Ergo, glTexParameter* affects only the bound texture.

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