NAME
glBlendColor
- set the blend color
C SPECIFICATION
void ggllBBlleennddCCoolloorr(
GLclampf _r_e_d,
GLclampf _g_r_e_e_n,
GLclampf _b_l_u_e,
GLclampf _a_l_p_h_a )
delim $$
PARAMETERS
-
_r_e_d, _g_r_e_e_n, _b_l_u_e, _a_l_p_h_a
-
specify the components of GGLL__BBLLEENNDD__CCOOLLOORR
DESCRIPTION
The GGLL__BBLLEENNDD__CCOOLLOORR may be used to calculate the source and destination
blending factors. The color components are clamped to the range [0, 1]
before being stored. See ggllBBlleennddFFuunncc for a complete description of the
blending operations.
Initially the GGLL__BBLLEENNDD__CCOOLLOORR is set to (0, 0, 0, 0).
NOTES
ggllBBlleennddCCoolloorr is part of the GGLL__AARRBB__iimmaaggiinngg subset. ggllBBlleennddCCoolloorr is present only
if GGLL__AARRBB__iimmaaggiinngg is returned when ggllGGeettSSttrriinngg is called with
GGLL__EEXXTTEENNSSIIOONNSS as its argument.
ERRORS
GGLL__IINNVVAALLIIDD__OOPPEERRAATTIIOONN is generated if ggllBBlleennddCCoolloorr is executed
between the execution of ggllBBeeggiinn and the corresponding
execution of ggllEEnndd.
ASSOCIATED GETS
ggllGGeett with an argument of GGLL__BBLLEENNDD__CCOOLLOORR
SEE ALSO
ggllBBlleennddEEqquuaattiioonn((33GG)),
ggllBBlleennddFFuunncc((33GG)),
ggllGGeettSSttrriinngg((33GG))