Package icyllis.arc3d.granite

Class BlendFormula

java.lang.Object

icyllis.arc3d.granite.BlendFormula

public final class BlendFormula
extends Object

Wraps the shader outputs and HW blend state that comprise a Porter Duff blend mode with coverage.

Field Summary

Fields

Modifier and Type	Field	Description
final byte	mDstFactor
final byte	mEquation
final byte	mPrimaryOutput
final byte	mSecondaryOutput
final byte	mSrcFactor
static final byte	OUTPUT_TYPE_COVERAGE	Values the shader can write to primary and secondary outputs.
static final byte	OUTPUT_TYPE_MODULATE	Values the shader can write to primary and secondary outputs.
static final byte	OUTPUT_TYPE_ONE_MINUS_SRC_ALPHA_MODULATE	Values the shader can write to primary and secondary outputs.
static final byte	OUTPUT_TYPE_ONE_MINUS_SRC_COLOR_MODULATE	Values the shader can write to primary and secondary outputs.
static final byte	OUTPUT_TYPE_SRC_ALPHA_MODULATE	Values the shader can write to primary and secondary outputs.
static final byte	OUTPUT_TYPE_ZERO	Values the shader can write to primary and secondary outputs.

Constructor Summary

Constructors

Constructor	Description
BlendFormula(byte primaryOutput, byte secondaryOutput, byte equation, byte srcFactor, byte dstFactor)

Method Summary

Modifier and Type	Method	Description
static BlendFormula	getBlendFormula(boolean isOpaque, boolean hasCoverage, BlendMode mode)	This table outlines the blend formulas we will use with each blend mode, with and without coverage, with and without an opaque input color.
boolean	hasSecondaryOutput()
boolean	modifiesDst()

Methods inherited from class java.lang.Object

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

Field Details

OUTPUT_TYPE_ZERO

public static final byte OUTPUT_TYPE_ZERO

Values the shader can write to primary and secondary outputs. These are all modulated by coverage. We will ignore the multiplies when not using coverage.

See Also:

• Constant Field Values

OUTPUT_TYPE_COVERAGE

public static final byte OUTPUT_TYPE_COVERAGE

Values the shader can write to primary and secondary outputs. These are all modulated by coverage. We will ignore the multiplies when not using coverage.

See Also:

• Constant Field Values

OUTPUT_TYPE_MODULATE

public static final byte OUTPUT_TYPE_MODULATE

Values the shader can write to primary and secondary outputs. These are all modulated by coverage. We will ignore the multiplies when not using coverage.

See Also:

• Constant Field Values

OUTPUT_TYPE_SRC_ALPHA_MODULATE

public static final byte OUTPUT_TYPE_SRC_ALPHA_MODULATE

Values the shader can write to primary and secondary outputs. These are all modulated by coverage. We will ignore the multiplies when not using coverage.

See Also:

• Constant Field Values

OUTPUT_TYPE_ONE_MINUS_SRC_ALPHA_MODULATE

public static final byte OUTPUT_TYPE_ONE_MINUS_SRC_ALPHA_MODULATE

Values the shader can write to primary and secondary outputs. These are all modulated by coverage. We will ignore the multiplies when not using coverage.

See Also:

• Constant Field Values

OUTPUT_TYPE_ONE_MINUS_SRC_COLOR_MODULATE

public static final byte OUTPUT_TYPE_ONE_MINUS_SRC_COLOR_MODULATE

Values the shader can write to primary and secondary outputs. These are all modulated by coverage. We will ignore the multiplies when not using coverage.

See Also:

• Constant Field Values

mPrimaryOutput

public final byte mPrimaryOutput

mSecondaryOutput

public final byte mSecondaryOutput

mEquation

public final byte mEquation

mSrcFactor

public final byte mSrcFactor

mDstFactor

public final byte mDstFactor

Constructor Details

BlendFormula

public BlendFormula(byte primaryOutput,
 byte secondaryOutput,
 byte equation,
 byte srcFactor,
 byte dstFactor)

Method Details

hasSecondaryOutput

public boolean hasSecondaryOutput()

modifiesDst

public boolean modifiesDst()

getBlendFormula

@Nullable
public static BlendFormula getBlendFormula(boolean isOpaque,
 boolean hasCoverage,
 @Nonnull
 BlendMode mode)

This table outlines the blend formulas we will use with each blend mode, with and without coverage, with and without an opaque input color.