GlCopyTexImage1D

_glCopyTexImage1D: copy pixels into a 1D texture image

Syntax

SUB _glCopyTexImage1D (BYVAL target AS _UNSIGNED LONG, BYVAL level AS LONG, BYVAL internalFormat AS _UNSIGNED LONG, BYVAL x AS LONG, BYVAL y AS LONG, BYVAL width AS LONG, BYVAL border AS LONG)

void _glCopyTexImage1D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);

target

Specifies the target texture. Must be Template:KW.

level

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

internalformat

Specifies the internal format of the texture. Must be one of the following symbolic constants: Template:KW, Template:KW, Template:KW, Template:KW. Template:KW, Template:KW. Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, or Template:KW.

x, y

Specify the window coordinates of the left corner of the row of pixels to be copied.

width

Specifies the width of the texture image. The height of the texture image is 1.

border

This value must be 0.

Description

_glCopyTexImage1D defines a one-dimensional texture image with pixels from the current Template:KW.

The screen-aligned pixel row with left corner at (x, y) and with a length of width defines the texture array at the mipmap level specified by level. internalformat specifies the internal format of the texture array.

The pixels in the row are processed exactly as if Template:KW had been called, but the process stops just before final conversion. At this point all pixel component values are clamped to the range [0, 1] and then converted to the texture's internal format for storage in the texel array.

Pixel ordering is such that lower x screen coordinates correspond to lower texture coordinates.

If any of the pixels within the specified row of the current Template:KW are outside the window associated with the current rendering context, then the values obtained for those pixels are undefined.

_glCopyTexImage1D defines a one-dimensional texture image with pixels from the current Template:KW.

When internalformat is one of the sRGB types, the GL does not automatically convert the source pixels to the sRGB color space. In this case, the _glPixelMap function can be used to accomplish the conversion.

Template:PageNotes

1, 2, 3, and 4 are not accepted values for internalformat.

An image with 0 width indicates a NULL texture.

Template:PageErrors

Template:KW is generated if target is not one of the allowable values.

Template:KW is generated if level is less than 0.

Template:KW may be generated if level is greater than log₂(max), where max is the returned value of Template:KW.

Template:KW is generated if internalformat is not an allowable value.

Template:KW is generated if width is less than 0 or greater than Template:KW.

Template:KW is generated if border is not 0.

Template:KW is generated if internalformat is Template:KW, Template:KW, Template:KW, or Template:KW and there is no depth buffer.

Template:PageUseWith

See also

SUB _GL Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW

Template:PageCopyright