Package icyllis.arc3d.granite.geom

Class AnalyticSimpleBoxStep

java.lang.Object

icyllis.arc3d.granite.GeometryStep

icyllis.arc3d.granite.geom.AnalyticSimpleBoxStep

public class AnalyticSimpleBoxStep
extends GeometryStep

This technology draws zero-area lines (round cap, square cap, butt cap), shaped lines (round, square; fill, stroke, stroke and fill), rectangles (fill, stroke, stroke and fill; round join, miter join), round rectangles with circular corners (fill, stroke, stroke and fill; four corners have the same radius), circle (fill, stroke, stroke and fill), supports stroke direction (inside, center, outside) using analytic method.

Always use instanced rendering, without per-vertex data, without index buffer, without uniforms, emits coverage. Supports solid color, supports over-stroking, supports device-independent antialiasing, supports 32 bit-per-channel color input, support lines in local coordinates, supports hard-edge coverage (no AA), supports any local-to-device transforms.

This class provides a blur variant: similar to normal AA, but fills a rounded rectangle by first applying an approximate Gaussian filter to the mask in local space, and paint with colors. No actual analytic AA in blur variant.

Nested Class Summary

Nested classes/interfaces inherited from class icyllis.arc3d.granite.GeometryStep

GeometryStep.ProgramImpl

Field Summary

Fields

Modifier and Type	Field	Description
static final VertexInputLayout.Attribute	FLAGS_AND_DEPTH	Bitfield: 16-32 bits: painter's depth; 4-5 bits: join; 2-4 bits: dir; 0-2 bits: type; join=0: round, join=1: miter; dir=0: inside, dir=1: center, dir=2: outside; type=0: rect, type=1: round line, type=2 butt line;
static final VertexInputLayout.AttributeSet	INSTANCE_ATTRIBS
static final VertexInputLayout.Attribute	LOCAL_RECT	(left, top, right, bottom) or ((startX, startY), (stopX, stopY))
static final VertexInputLayout.Attribute	RADII	X is corner radius for rect or half width for line. Y is stroke radius if stroked, or -1.0 if filled. Z is local AA radius.

Fields inherited from class icyllis.arc3d.granite.GeometryStep

DEPTH, FLAG_EMIT_COVERAGE, FLAG_EMIT_PRIMITIVE_COLOR, FLAG_HANDLE_SOLID_COLOR, FLAG_HAS_TEXTURES, FLAG_OUTSET_BOUNDS_FOR_AA, FLAG_PERFORM_SHADING, MODEL_VIEW, SOLID_COLOR

Constructor Summary

Constructors

Constructor	Description
AnalyticSimpleBoxStep(boolean blur)

Method Summary

Modifier and Type	Method	Description
void	appendToKey(@NonNull KeyBuilder b)	Appends a key on the KeyBuilder that reflects any variety in the code that the geometry processor subclass can emit.
void	emitFragmentColorCode(Formatter fs, String outputColor)	Emits the fragment color code into the fragment shader.
void	emitFragmentCoverageCode(Formatter fs, String outputCoverage)	Emits the fragment coverage code into the fragment shader.
void	emitUniforms(UniformHandler uniformHandler, boolean mayRequireLocalCoords)
void	emitVaryings(VaryingHandler varyingHandler, boolean usesFastSolidColor)
void	emitVertexGeomCode(Formatter vs, @NonNull String worldPosVar, @Nullable String localPosVar, boolean usesFastSolidColor)	Emits the geometry code into the vertex shader.
@NonNull GeometryStep.ProgramImpl	makeProgramImpl(ShaderCaps caps)	Returns a new instance of the appropriate implementation class for the given GeometryProcessor.
void	writeMesh(MeshDrawWriter writer, Draw draw, float @Nullable [] solidColor, boolean mayRequireLocalCoords)

Methods inherited from class icyllis.arc3d.granite.GeometryStep

appendAttributesToKey, depthStencilFlags, depthStencilSettings, emitFragmentDefinitions, emitSamplers, emitsCoverage, emitsPrimitiveColor, emitVertexDefinitions, getInputLayout, handlesSolidColor, hasInstanceAttributes, hasVertexAttributes, instanceAttributes, instanceBinding, instanceStride, makeColorAttribute, name, numInstanceAttributes, numInstanceLocations, numTextureSamplers, numVertexAttributes, numVertexLocations, performsShading, primitiveType, textureSamplerState, textureSamplerSwizzle, uniqueID, vertexAttributes, vertexBinding, vertexStride, writeUniformsAndTextures

Methods inherited from class java.lang.Object

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

Field Details

LOCAL_RECT

public static final VertexInputLayout.Attribute LOCAL_RECT

(left, top, right, bottom) or ((startX, startY), (stopX, stopY))

RADII

public static final VertexInputLayout.Attribute RADII

X is corner radius for rect or half width for line.
Y is stroke radius if stroked, or -1.0 if filled.
Z is local AA radius.

In blur variant: Y is blur radius, Z is noise alpha.

FLAGS_AND_DEPTH

public static final VertexInputLayout.Attribute FLAGS_AND_DEPTH

Bitfield:
16-32 bits: painter's depth;
4-5 bits: join;
2-4 bits: dir;
0-2 bits: type;
join=0: round, join=1: miter;
dir=0: inside, dir=1: center, dir=2: outside;
type=0: rect, type=1: round line, type=2 butt line;

INSTANCE_ATTRIBS

public static final VertexInputLayout.AttributeSet INSTANCE_ATTRIBS

Constructor Details

AnalyticSimpleBoxStep

public AnalyticSimpleBoxStep(boolean blur)

Method Details

appendToKey

public void appendToKey(@NonNull KeyBuilder b)

Description copied from class: GeometryStep

Appends a key on the KeyBuilder that reflects any variety in the code that the geometry processor subclass can emit.

Specified by:

appendToKey in class GeometryStep

See Also:

• GeometryStep.makeProgramImpl(ShaderCaps)

makeProgramImpl

public @NonNull GeometryStep.ProgramImpl makeProgramImpl(ShaderCaps caps)

Description copied from class: GeometryStep

Returns a new instance of the appropriate implementation class for the given GeometryProcessor. This method is called only when the specified key does not exist in the program cache.

Specified by:

makeProgramImpl in class GeometryStep

See Also:

• GeometryStep.appendToKey(KeyBuilder)

emitVaryings

public void emitVaryings(VaryingHandler varyingHandler,
 boolean usesFastSolidColor)

Overrides:

emitVaryings in class GeometryStep

emitUniforms

public void emitUniforms(UniformHandler uniformHandler,
 boolean mayRequireLocalCoords)

Overrides:

emitUniforms in class GeometryStep

emitVertexGeomCode

public void emitVertexGeomCode(Formatter vs,
 @NonNull String worldPosVar,
 @Nullable String localPosVar,
 boolean usesFastSolidColor)

Description copied from class: GeometryStep

Emits the geometry code into the vertex shader. Implementation must define "vec4 worldPosVar" with the given name and setup it. If localPosVar is not null, then it must write geometry's local pos to it.

Overrides:

emitVertexGeomCode in class GeometryStep

emitFragmentColorCode

public void emitFragmentColorCode(Formatter fs,
 String outputColor)

Description copied from class: GeometryStep

Emits the fragment color code into the fragment shader. This is either paint's solid color or per-vertex primitive color. See GeometryStep.FLAG_HANDLE_SOLID_COLOR and GeometryStep.FLAG_EMIT_PRIMITIVE_COLOR.

Overrides:

emitFragmentColorCode in class GeometryStep

emitFragmentCoverageCode

public void emitFragmentCoverageCode(Formatter fs,
 String outputCoverage)

Description copied from class: GeometryStep

Emits the fragment coverage code into the fragment shader.

If GeometryStep.emitsCoverage() is false, this method is called for hard-edge coverage, discard the fragment if coverage is 0. Otherwise outputCoverage is non-null, and coverage will involve in blending operations.

Overrides:

emitFragmentCoverageCode in class GeometryStep

writeMesh

public void writeMesh(MeshDrawWriter writer,
 Draw draw,
 float @Nullable [] solidColor,
 boolean mayRequireLocalCoords)

Overrides:

writeMesh in class GeometryStep