_b_o_r_d_e_r The border width of the texture. Must be 0 or 1.
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
ggggllllCCCCooooppppyyyyTTTTeeeexxxxIIIImmmmaaaaggggeeee2222DDDDEEEEXXXXTTTT defines a two-dimensional texture image with pixels
from the current GGGGLLLL____RRRREEEEAAAADDDD____BBBBUUUUFFFFFFFFEEEERRRR (rather than from main memory, as is the
case for ggggllllTTTTeeeexxxxIIIImmmmaaaaggggeeee2222DDDD).
The screen-aligned pixel rectangle with lower-left corner at (_x, _y)
having width _w_i_d_t_h+2*_b_o_r_d_e_r and height _h_e_i_g_h_t+2*_b_o_r_d_e_r is used to define
the texture array at the mipmap level specified by _l_e_v_e_l. (But see the
discussion of GGGGLLLL____IIIINNNNTTTTEEEERRRRLLLLAAAACCCCEEEE____SSSSGGGGIIIIXXXX below.) The internal format of the
texture array is selected by _i_n_t_e_r_n_a_l_f_o_r_m_a_t.
The pixels in the rectangle are processed exactly as if ggggllllCCCCooooppppyyyyPPPPiiiixxxxeeeellllssss 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 _i texture coordinates, and lower _y screen coordinates correspond to
lower _j texture coordinates.
If any of the pixels within the specified rectangle of the current
GGGGLLLL____RRRREEEEAAAADDDD____BBBBUUUUFFFFFFFFEEEERRRR are outside the window associated with the current
rendering context, then the values obtained for those pixels are
undefined.
If GGGGLLLL____IIIINNNNTTTTEEEERRRRLLLLAAAACCCCEEEE____SSSSGGGGIIIIXXXX is enabled, then successive rows of the pixel
rectangle define every other row of the texture image, rather than
successive rows of the texture image. That is, row _j of the source image
is used to define row 2_j of the texture image, while rows (1,3,5,...) are
left undefined. Note, that when GGGGLLLL____IIIINNNNTTTTEEEERRRRLLLLAAAACCCCEEEE____SSSSGGGGIIIIXXXX is enabled the total
height (i.e., the height of interior texture image plus twice the border)
of the defined texture is 2x_h_e_i_g_h_t.
NNNNOOOOTTTTEEEESSSS
ggggllllCCCCooooppppyyyyTTTTeeeexxxxIIIImmmmaaaaggggeeee2222DDDDEEEEXXXXTTTT is part of the EEEEXXXXTTTT____ccccooooppppyyyy____tttteeeexxxxttttuuuurrrreeee extension. See
ggggllllIIIInnnnttttrrrroooo for more information about using extensions.
EEEERRRRRRRROOOORRRRSSSS
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____EEEENNNNUUUUMMMM is generated when _t_a_r_g_e_t is not one of the allowable
values.
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____VVVVAAAALLLLUUUUEEEE is generated if _l_e_v_e_l is less than zero or greater than
log2(_m_a_x), where _m_a_x is the returned value of GGGGLLLL____MMMMAAAAXXXX____TTTTEEEEXXXXTTTTUUUURRRREEEE____SSSSIIIIZZZZEEEE.
GGGGLLLL____TTTTEEEEXXXXTTTTUUUURRRREEEE____TTTTOOOOOOOO____LLLLAAAARRRRGGGGEEEE____EEEEXXXXTTTT is generated if the specified image is too
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____VVVVAAAALLLLUUUUEEEE is generated if _w_i_d_t_h or _h_e_i_g_h_t is less than zero,
greater than 2+GGGGLLLL____MMMMAAAAXXXX____TTTTEEEEXXXXTTTTUUUURRRREEEE____SSSSIIIIZZZZEEEE, when _w_i_d_t_h cannot be represented as
2_k+2_b_o_r_d_e_r for some integer _k, or when _h_e_i_g_h_t cannot be represented as
2_k+_Ix_b_o_r_d_e_r, where _I is 2 when GGGGLLLL____IIIINNNNTTTTEEEERRRRLLLLAAAACCCCEEEE____SSSSGGGGIIIIXXXX is disabled and 1
otherwise.
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____VVVVAAAALLLLUUUUEEEE is generated if _b_o_r_d_e_r is not 0 or 1.
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____VVVVAAAALLLLUUUUEEEE is generated if _i_n_t_e_r_n_a_l_f_o_r_m_a_t is not one of the
allowable values.
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____OOOOPPPPEEEERRRRAAAATTTTIIIIOOOONNNN is generated if ggggllllCCCCooooppppyyyyTTTTeeeexxxxIIIImmmmaaaaggggeeee2222DDDDEEEEXXXXTTTT is executed
between the execution of ggggllllBBBBeeeeggggiiiinnnn and the corresponding execution of
