Framebuffer Control State Variables

GL_DRAW_BUFFER

Description:	Buffers selected for drawing
Attribute group:	color-buffer
Initial value:	—
Get command:	glGetIntegerv

GL_INDEX_WRITEMASK

Description:	Color-index writemask
Attribute group:	color-buffer
Initial value:	1's
Get command:	glGetIntegerv

GL_COLOR_WRITEMASK

Description:	Color write enables; R, G, B, or A
Attribute group:	color-buffer
Initial value:	GL_TRUE
Get command:	glGetBooleanv

GL_DEPTH_WRITEMASK

Description:	Depth buffer enabled for writing
Attribute group:	depth-buffer
Initial value:	GL_TRUE
Get command:	glGetBooleanv

GL_STENCIL_WRITEMASK

Description:	Stencil-buffer writemask
Attribute group:	stencil-buffer
Initial value:	1's
Get command:	glGetIntegerv

GL_COLOR_CLEAR_VALUE

Description:	Color-buffer clear value (RGBA mode)
Attribute group:	color-buffer
Initial value:	0, 0, 0, 0
Get command:	glGetFloatv

GL_INDEX_CLEAR_VALUE

Description:	Color-buffer clear value (color-index mode)
Attribute group:	color-buffer
Initial value:	0
Get command:	glGetFloatv

GL_DEPTH_CLEAR_VALUE

Description:	Depth-buffer clear value
Attribute group:	depth-buffer
Initial value:	1
Get command:	glGetIntegerv

GL_STENCIL_CLEAR_VALUE

Description:	Stencil-buffer clear value
Attribute group:	stencil-buffer
Initial value:	0
Get command:	glGetIntegerv

GL_ACCUM_CLEAR_VALUE

Description:	Accumulation-buffer clear value
Attribute group:	accum-buffer
Initial value:	0
Get command:	glGetFloatv