Package org.lwjgl.opengl

Class ARBBlendFuncExtended

java.lang.Object

org.lwjgl.opengl.ARBBlendFuncExtended

public class ARBBlendFuncExtended
extends java.lang.Object

Native bindings to the ARB_blend_func_extended extension.

Traditional OpenGL includes fixed-function blending that combines source colors with the existing content of a render buffer in a variety of ways. A number of extensions have enhanced this functionality by adding further sources of blending weights and methods to combine them. However, the inputs to the fixed-function blending units are constrained to a source color (as output from fragment shading), destination color (as the current content of the frame buffer) or constants that may be used in their place.

This extension adds new blending functions whereby a fragment shader may output two colors, one of which is treated as the source color, and the other used as a blending factor for either source or destination colors. Furthermore, this extension increases orthogonality by allowing the SRC_ALPHA_SATURATE function to be used as the destination weight.

Requires ARB_fragment_shader and EXT_gpu_shader4. Promoted to core in OpenGL 3.3.

Field Summary

Fields

Modifier and Type	Field and Description
static int	GL_MAX_DUAL_SOURCE_DRAW_BUFFERS Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv and GetDoublev.
static int	GL_ONE_MINUS_SRC1_ALPHA GL_ONE_MINUS_SRC1_COLOR GL_SRC1_COLOR Accepted by the src and dst parameters of BlendFunc and BlendFunci, and by the srcRGB, dstRGB, srcAlpha and dstAlpha parameters of BlendFuncSeparate and BlendFuncSeparatei.

Method Summary

Modifier and Type	Method and Description
static void	glBindFragDataLocationIndexed(int program, int colorNumber, int index, java.nio.ByteBuffer name) Binds a user-defined varying out variable to a fragment shader color number and index.
static void	glBindFragDataLocationIndexed(int program, int colorNumber, int index, java.lang.CharSequence name) Binds a user-defined varying out variable to a fragment shader color number and index.
static int	glGetFragDataIndex(int program, java.nio.ByteBuffer name) Queries the bindings of color indices to user-defined varying out variables.
static int	glGetFragDataIndex(int program, java.lang.CharSequence name) Queries the bindings of color indices to user-defined varying out variables.

Methods inherited from class java.lang.Object

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

Field Detail

GL_SRC1_COLOR, GL_ONE_MINUS_SRC1_COLOR, GL_ONE_MINUS_SRC1_ALPHA

Accepted by the src and dst parameters of BlendFunc and BlendFunci, and by the srcRGB, dstRGB, srcAlpha and dstAlpha parameters of BlendFuncSeparate and BlendFuncSeparatei.

GL_MAX_DUAL_SOURCE_DRAW_BUFFERS

Accepted by the pname parameter of GetBooleanv, GetIntegerv, GetFloatv and GetDoublev.

Method Detail

glBindFragDataLocationIndexed

public static void glBindFragDataLocationIndexed(int program,
                                                 int colorNumber,
                                                 int index,
                                                 java.nio.ByteBuffer name)

public static void glBindFragDataLocationIndexed(int program,
                                                 int colorNumber,
                                                 int index,
                                                 java.lang.CharSequence name)

Binds a user-defined varying out variable to a fragment shader color number and index.

Parameters:

program - the name of the program containing varying out variable whose binding to modify

colorNumber - the color number to bind the user-defined varying out variable to

index - the index of the color input to bind the user-defined varying out variable to

name - the name of the user-defined varying out variable whose binding to modify

glGetFragDataIndex

public static int glGetFragDataIndex(int program,
                                     java.nio.ByteBuffer name)

public static int glGetFragDataIndex(int program,
                                     java.lang.CharSequence name)

Queries the bindings of color indices to user-defined varying out variables.

Parameters:

program - the name of the program containing varying out variable whose binding to query

name - the name of the user-defined varying out variable whose index to query