glColor4f , glColor4x - set the current color
void glColor4f(GLfloat red,
GLfloat green,
GLfloat blue,
GLfloat alpha)
void glColor4x(GLfixed red,
GLfixed green,
GLfixed blue,
GLfixed alpha)red, green, blue, alphaSpecify new red, green, blue, and alpha values for the current color. The initial value is (1, 1, 1, 1).
The GL stores a current four-valued RGBA color. glColor sets a new four-valued RGBA color.
Current color values are stored in fixed-point or floating-point. In case the values are stored in floating-point, the mantissa and exponent sizes are unspecified.
Neither fixed-point nor floating-point values are clamped to the range [0, 1] before the current color is updated. However, color components are clamped to this range before they are interpolated or written into the color buffer.
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