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Editorial Team
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Asked: 2026-06-14T20:54:19+00:00

I knew from a website that rectangle texture can be used for screen-sized images.

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I knew from a website that rectangle texture can be used for screen-sized images. However, for the function glGetTexParameterfv, only GL_TEXTURE_2D and GL_TEXTURE_CUBE_MAP are accepted. Does it mean that rectangle texture, or GL_TEXTURE_RECTANGLE, is not supported by OpenGL ES 2.0? And I am wondering whether it means only normalized texture coordinate can be used in shaders? Thank you.

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1 Answer

  1. Editorial Team

    • About GL_TEXTURE_RECTANGLE

    • Texture coordinates is just a interpolated value between vertices. But for 2D texture it’s value in 0.0 to 1.0 range (if you do not tiling texture). For texture cube its vector (it can be non-normalized)

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