Package org.lwjgl.opengl

Class ARBDrawBuffersBlend

java.lang.Object

org.lwjgl.opengl.ARBDrawBuffersBlend

public class ARBDrawBuffersBlend
extends Object

Native bindings to the ARB_draw_buffers_blend extension.

This extension builds upon the ARB_draw_buffers and EXT_draw_buffers2 extensions. In ARB_draw_buffers (part of OpenGL 2.0), separate values could be written to each color buffer. This was further enhanced by EXT_draw_buffers2 by adding in the ability to enable blending and to set color write masks independently per color output.

This extension provides the ability to set individual blend equations and blend functions for each color output.

Requires OpenGL 2.0 and EXT_draw_buffers2. Promoted to core in OpenGL 4.0.

Method Summary

Modifier and Type	Method	Description
static void	glBlendEquationiARB(int buf, int mode)	Provides a way to enable blending and set color write masks independently per color output.
static void	glBlendEquationSeparateiARB(int buf, int modeRGB, int modeAlpha)	Provides a way to enable blending and set color write masks independently per color output.
static void	glBlendFunciARB(int buf, int src, int dst)	Provides a way to enable blending and set color write masks independently per color output.
static void	glBlendFuncSeparateiARB(int buf, int srcRGB, int dstRGB, int srcAlpha, int dstAlpha)	Provides a way to enable blending and set color write masks independently per color output.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

glBlendEquationiARB

public static void glBlendEquationiARB(int buf,
 int mode)

Provides a way to enable blending and set color write masks independently per color output.

This call modifies the blend equations associated with an individual draw buffer.

The error INVALID_ENUM is generated if the buf parameter is outside the range [0, MAX_DRAW_BUFFERS – 1].

The error INVALID_ENUM is generated if mode is not one of FUNC_ADD, FUNC_SUBTRACT, FUNC_REVERSE_SUBTRACT, MAX, or MIN.

The error INVALID_OPERATION is generated if this method is executed between the execution of Begin and the corresponding execution of End.

Parameters:

buf - an integer that indicates the DRAW_BUFFER to modify.

mode - determines both the RGB and alpha blend equations. One of:

FUNC_ADD

FUNC_SUBTRACT

FUNC_REVERSE_SUBTRACT

MIN

MAX

glBlendEquationSeparateiARB

public static void glBlendEquationSeparateiARB(int buf,
 int modeRGB,
 int modeAlpha)

Provides a way to enable blending and set color write masks independently per color output.

This call modifies the blend equations associated with an individual draw buffer.

The error INVALID_ENUM is generated if the buf parameter is outside the range [0, MAX_DRAW_BUFFERS – 1].

The error INVALID_ENUM is generated if either modeRGB or modeAlpha are not one of FUNC_ADD, FUNC_SUBTRACT, FUNC_REVERSE_SUBTRACT, MAX, or MIN.

The error INVALID_OPERATION is generated if this method is executed between the execution of Begin and the corresponding execution of End.

Parameters:

buf - an integer that indicates the DRAW_BUFFER to modify.

modeRGB - the RGB blend equation. One of:

FUNC_ADD

FUNC_SUBTRACT

FUNC_REVERSE_SUBTRACT

MIN

MAX

modeAlpha - the alpha blend equation. One of:

FUNC_ADD

FUNC_SUBTRACT

FUNC_REVERSE_SUBTRACT

MIN

MAX

glBlendFunciARB

public static void glBlendFunciARB(int buf,
 int src,
 int dst)

Provides a way to enable blending and set color write masks independently per color output.

This call modifies the blend functions associated with an individual draw buffer.

The error INVALID_ENUM is generated if the buf parameter is outside the range [0, MAX_DRAW_BUFFERS – 1].

The error INVALID_ENUM is generated if either src, or dst is not an accepted value.

The error INVALID_OPERATION is generated if this method is executed between the execution of Begin and the corresponding execution of End.

Parameters:

buf - an integer that indicates the DRAW_BUFFER to modify.

src - determines both RGB and alpha source functions

dst - determines both RGB and alpha destination functions

glBlendFuncSeparateiARB

public static void glBlendFuncSeparateiARB(int buf,
 int srcRGB,
 int dstRGB,
 int srcAlpha,
 int dstAlpha)

Provides a way to enable blending and set color write masks independently per color output.

This call modifies the blend functions associated with an individual draw buffer.

The error INVALID_ENUM is generated if the buf parameter is outside the range [0, MAX_DRAW_BUFFERS – 1].

The error INVALID_ENUM is generated if either srcRGB, dstRGB, srcAlpha, or dstAlpha is not an accepted value.

The error INVALID_OPERATION is generated if this method is executed between the execution of Begin and the corresponding execution of End.

Parameters:

buf - an integer that indicates the DRAW_BUFFER to modify.

srcRGB - the source RGB blend function

dstRGB - the destination RGB blend function

srcAlpha - the source alpha blend function

dstAlpha - the destination alpha blend function