GLTEXSUBIMAGE1D(3G)

    .SH "NAME" glTexSubImage1D, glTextureSubImage1D - specify a one-dimensional texture subimage
    .SH "C SPECIFICATION"

            .HP u void glTexSubImage1D(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const void * pixels);
            .HP u void glTextureSubImage1D(GLuint texture, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const void *pixels);

    .SH "PARAMETERS"

        .PP target

                    Specifies the target to which the texture is bound for glTexSubImage1D. Must be GL_TEXTURE_1D.

            .RE
            .PP texture

                        Specifies the texture object name for glTextureSubImage1D. The effective target of texture must be one of the valid target values above.

                .RE
                .PP level

                            Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.

                    .RE
                    .PP xoffset

                                Specifies a texel offset in the x direction within the texture array.

                        .RE
                        .PP width

                                    Specifies the width of the texture subimage.

                            .RE
                            .PP format

                                        Specifies the format of the pixel data. The following symbolic values are accepted: GL_RED, GL_RG, GL_RGB, GL_BGR, GL_RGBA, GL_DEPTH_COMPONENT, and GL_STENCIL_INDEX.

                                .RE
                                .PP type

                                            Specifies the data type of the pixel data. The following symbolic values are accepted: GL_UNSIGNED_BYTE, GL_BYTE, GL_UNSIGNED_SHORT, GL_SHORT, GL_UNSIGNED_INT, GL_INT, GL_FLOAT, GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, and GL_UNSIGNED_INT_2_10_10_10_REV.

                                    .RE
                                    .PP pixels

                                                Specifies a pointer to the image data in memory.

                                        .RE

                                    .SH "DESCRIPTION"
                                        .PP Texturing maps a portion of a specified texture image onto each graphical primitive for which texturing is enabled. To enable or disable one-dimensional texturing, call glEnable() and glDisable with argument GL_TEXTURE_1D.
                                        .PP glTexSubImage1D and glTextureSubImage1D redefine a contiguous subregion of an existing one-dimensional texture image. The texels referenced by pixels replace the portion of the existing texture array with x indices xoffset and xoffset + width - 1, inclusive. This region may not include any texels outside the range of the texture array as it was originally specified. It is not an error to specify a subtexture with width of 0, but such a specification has no effect.
                                        .PP If a non-zero named buffer object is bound to the GL_PIXEL_UNPACK_BUFFER target (see glBindBuffer()) while a texture image is specified, pixels is treated as a byte offset into the buffer object's data store.

                                    .SH "NOTES"
                                        .PP glPixelStore() modes affect texture images.
                                        .PP glTexSubImage1D and glTextureSubImage1D specify a one-dimensional subtexture for the current texture unit, specified with glActiveTexture().
                                        .PP GL_STENCIL_INDEX is accepted for format only if the GL version is 4.4 or higher.

                                    .SH "ERRORS"
                                        .PP GL_INVALID_ENUM is generated if target or the effective target of texture is not one of the allowable values.
                                        .PP GL_INVALID_OPERATION is generated by glTextureSubImage1D if texture is not the name of an existing texture object.
                                        .PP GL_INVALID_ENUM is generated if format is not an accepted format constant.
                                        .PP GL_INVALID_ENUM is generated if type is not a type constant.
                                        .PP GL_INVALID_VALUE is generated if level is less than 0.
                                        .PP GL_INVALID_VALUE may be generated if level is greater than log 2 max, where max is the returned value of GL_MAX_TEXTURE_SIZE.
                                        .PP GL_INVALID_VALUE is generated if xoffset < - b, or if xoffset + width > w - b, where w is the GL_TEXTURE_WIDTH, and b is the width of the GL_TEXTURE_BORDER of the texture image being modified. Note that w includes twice the border width.
                                        .PP GL_INVALID_VALUE is generated if width is less than 0.
                                        .PP GL_INVALID_OPERATION is generated if the texture array has not been defined by a previous glTexImage1D() operation.
                                        .PP GL_INVALID_OPERATION is generated if type is one of GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5, or GL_UNSIGNED_SHORT_5_6_5_REV and format is not GL_RGB.
                                        .PP GL_INVALID_OPERATION is generated if type is one of GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, or GL_UNSIGNED_INT_2_10_10_10_REV and format is neither GL_RGBA nor GL_BGRA.
                                        .PP GL_INVALID_OPERATION is generated if format is GL_STENCIL_INDEX and the base internal format is not GL_STENCIL_INDEX.
                                        .PP GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER target and the buffer object's data store is currently mapped.
                                        .PP GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER target and the data would be unpacked from the buffer object such that the memory reads required would exceed the data store size.
                                        .PP GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER target and pixels is not evenly divisible into the number of bytes needed to store in memory a datum indicated by type.

                                    .SH "ASSOCIATED GETS"
                                        .PP glGetTexImage()
                                        .PP glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDING

                                    .SH "VERSION SUPPORT"
                                        .TS allbox tab(:); lB cB s s s s s s s s s s s lB cB cB cB cB cB cB cB cB cB cB cB cB. T{ T}:T{ OpenGL Version T} T{ Function / Feature Name T}:T{ 2.0 T}:T{ 2.1 T}:T{ 3.0 T}:T{ 3.1 T}:T{ 3.2 T}:T{ 3.3 T}:T{ 4.0 T}:T{ 4.1 T}:T{ 4.2 T}:T{ 4.3 T}:T{ 4.4 T}:T{ 4.5 T} l c c c c c c c c c c c c l c c c c c c c c c c c c. T{ glTexSubImage1D T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T} T{ glTextureSubImage1D T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ - T}:T{ ✔ T}

                                    .SH "SEE ALSO"
                                        .PP glActiveTexture(), glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage1D(), glCopyTexSubImage2D(), glCopyTexSubImage3D(), glPixelStore(), glTexImage1D(), glTexImage2D(), glTexImage3D(), glTexParameter(), glTexSubImage2D(), glTexSubImage3D()

                                    .SH "COPYRIGHT"
                                        .PP Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see https://khronos.org/registry/OpenGL-Refpages/LICENSES/LicenseRef-FreeB.txt.

COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc.
Copyright © 2010-2014 Khronos Group