GLint leve )
PARAMETERS
target Specifies the target texture. Must be GL_TEXTURE_1D.
leve Specifies the level-of-detail number. Level 0 is the base image
level. Level n is the nth mipmap reduction image.
_param3 Specifies the internal format of the texture. Must be one of
the following symbolic constants: GL_ALPHA, GL_ALPHA4,
GL_ALPHA8, GL_ALPHA12, GL_ALPHA16, GL_LUMINANCE, GL_LUMINANCE4,
GL_LUMINANCE8, GL_LUMINANCE12, GL_LUMINANCE16,
GL_LUMINANCE_ALPHA, GL_LUMINANCE4_ALPHA4, GL_LUMINANCE6_ALPHA2,
GL_LUMINANCE8_ALPHA8, GL_LUMINANCE12_ALPHA4,
GL_LUMINANCE12_ALPHA12, GL_LUMINANCE16_ALPHA16, GL_INTENSITY,
GL_INTENSITY4, GL_INTENSITY8, GL_INTENSITY12, GL_INTENSITY16,
GL_RGB, GL_R3_G3_B2, GL_RGB4, GL_RGB5, GL_RGB8, GL_RGB10,
GL_RGB12, GL_RGB16, GL_RGBA, GL_RGBA2, GL_RGBA4, GL_RGB5_A1,
GL_RGBA8, GL_RGB10_A2, GL_RGBA12, or GL_RGBA16.
_param4, _param5
Specify the window coordinates of the left corner of the row of
pixels to be copied.
_param6 Specifies the width of the texture image. Must be 0 or
2n+2*_param7 for some integer n. The height of the texture im‐
age is 1.
_param7 Specifies the width of the border. Must be either 0 or 1.
DESCRIPTION
glCopyTexImage1D defines a one-dimensional texture image with pixels
from the current GL_READ_BUFFER.
The screen-aligned pixel row with left corner at (_eqnparam4,_eqnparam5)
and with a length of _eqnparam6+2*_eqnparam7 defines the texture array
at the mipmap level specified by leve. _param3 specifies the internal
format of the texture array.
The pixels in the row are processed exactly as if glCopyPixels 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
GL_READ_BUFFER are outside the window associated with the current ren‐
dering context, then the values obtained for those pixels are undefined.
GL_INVALID_ENUM is generated if target is not one of the allowable val‐
ues.
GL_INVALID_VALUE is generated if leve is less than 0.
GL_INVALID_VALUE may be generated if leve is greater than log2max, where
max is the returned value of GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if _param3 is not an allowable value.
GL_INVALID_VALUE is generated if _param6 is less than 0 or greater than
2 + GL_MAX_TEXTURE_SIZE, or if it cannot be represented as 2n+2*(_eqn‐
param7) for some integer value of n.
GL_INVALID_VALUE is generated if _param7 is not 0 or 1.
GL_INVALID_OPERATION is generated if glCopyTexImage1D is executed be‐
tween the execution of glBegin and the corresponding execution of glEnd.
ASSOCIATED GETS
glGetTexImage
glIsEnabled with argument GL_TEXTURE_1D
SEE ALSO
glCopyPixels, glCopyTexImage2D, glCopyTexSubImage1D,
glCopyTexSubImage2D, glPixelStore, glPixelTransfer, glTexEnv, glTexGen,
glTexImage1D, glTexImage2D, glTexSubImage1D, glTexSubImage2D,
glTexParameter
GLCOPYTEXIMAGE1D(3G)
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