com.sun.prism.impl.ps

Class BaseShaderContext

java.lang.Object

com.sun.prism.impl.BaseContext

com.sun.prism.impl.ps.BaseShaderContext

public abstract class BaseShaderContext
extends BaseContext

Maintains resources such as Shaders and GlyphCaches that are intended to be cached on a per-Screen basis, and provides methods that are called by BaseShaderGraphics to validate current state. The inner State class is used to encapsulate the current and previously validated state (such as texture bindings) so that the validation routines can avoid redundant state changes. There should be only one BaseShaderContext per Screen, however there may be one or more State instances per BaseShaderContext.

A note about State objects... The JOGL architecture creates a GLContext for each GLDrawable (one GLContext per GLDrawable, and one GLDrawable per onscreen window). Resources such as textures and shaders can be shared between those GLContext instances, but other state (texture bindings, scissor rect, etc) cannot be shared. Therefore we need to maintain one State instance per GLContext instance, which means there may be more than one State instance per BaseShaderContext. The currentState variable holds the current State instance corresponding to the current RenderTarget, and is revalidated as part of the updateRenderTarget() method. The ES2 backend will create a new State instance for each window, but the D3D backend is free to create a single State instance that can be shared for the entire Screen.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BaseShaderContext.MaskType
static class	BaseShaderContext.SpecialShaderType
static class	BaseShaderContext.State

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BaseShaderContext(Screen screen, ShaderFactory factory, int vbQuads)

Method Summary

Modifier and Type	Method and Description
abstract void	blit(RTTexture srcRTT, RTTexture dstRTT, int srcX0, int srcY0, int srcX1, int srcY1, int dstX0, int dstY0, int dstX1, int dstY1)
void	disposeLCDBuffer()
RTTexture	getLCDBuffer()
protected void	init()
void	initLCDBuffer(int width, int height)
boolean	isSuperShaderEnabled()
protected void	releaseRenderTarget()
protected void	resetLastClip(BaseShaderContext.State state)
protected void	setPerspectiveTransform(GeneralTransform3D transform)
protected void	setRenderTarget(RenderTarget target, NGCamera camera, boolean depthTest, boolean state3D)
protected abstract void	updateClipRect(Rectangle clipRect)
protected abstract void	updateCompositeMode(CompositeMode mode)
protected abstract BaseShaderContext.State	updateRenderTarget(RenderTarget target, NGCamera camera, boolean depthTest)
protected abstract void	updateShaderTransform(Shader shader, BaseTransform xform)
protected abstract void	updateTexture(int texUnit, Texture tex)
protected abstract void	updateWorldTransform(BaseTransform xform)
void	validateClearOp(BaseGraphics g)
void	validateLCDBuffer(RenderTarget renderTarget)
Shader	validateLCDOp(BaseShaderGraphics g, BaseTransform xform, Texture tex0, Texture tex1, boolean firstPass, Paint fillColor)
void	validatePaintOp(BaseGraphics g, BaseTransform xform, Texture maskTex, float bx, float by, float bw, float bh)
void	validateTextureOp(BaseGraphics g, BaseTransform xform, Texture tex0, PixelFormat format)

Methods inherited from class com.sun.prism.impl.BaseContext

clearGlyphCaches, drawQuads, flushMask, flushVertexBuffer, getAssociatedScreen, getGlyphCache, getGradientTexture, getOvalTexture, getPerspectiveTransformNoClone, getRectTexture, getRectTextureMaxSize, getResourceFactory, getVertexBuffer, getWrapRectTexture, renderQuads, setDeviceParametersFor2D, setDeviceParametersFor3D, setRenderTarget, updateMaskTexture, validateMaskTexture

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseShaderContext

protected BaseShaderContext(Screen screen,
                            ShaderFactory factory,
                            int vbQuads)

Method Detail

init

protected void init()

setPerspectiveTransform

protected void setPerspectiveTransform(GeneralTransform3D transform)

Overrides:

setPerspectiveTransform in class BaseContext

resetLastClip

protected void resetLastClip(BaseShaderContext.State state)

updateRenderTarget

protected abstract BaseShaderContext.State updateRenderTarget(RenderTarget target,
                                                              NGCamera camera,
                                                              boolean depthTest)

updateTexture

protected abstract void updateTexture(int texUnit,
                                      Texture tex)

updateShaderTransform

protected abstract void updateShaderTransform(Shader shader,
                                              BaseTransform xform)

updateWorldTransform

protected abstract void updateWorldTransform(BaseTransform xform)

updateClipRect

protected abstract void updateClipRect(Rectangle clipRect)

updateCompositeMode

protected abstract void updateCompositeMode(CompositeMode mode)

isSuperShaderEnabled

public boolean isSuperShaderEnabled()

Overrides:

isSuperShaderEnabled in class BaseContext

validateClearOp

public void validateClearOp(BaseGraphics g)

Specified by:

validateClearOp in class BaseContext

validatePaintOp

public void validatePaintOp(BaseGraphics g,
                            BaseTransform xform,
                            Texture maskTex,
                            float bx,
                            float by,
                            float bw,
                            float bh)

Specified by:

validatePaintOp in class BaseContext

validateTextureOp

public void validateTextureOp(BaseGraphics g,
                              BaseTransform xform,
                              Texture tex0,
                              PixelFormat format)

Specified by:

validateTextureOp in class BaseContext

validateLCDOp

public Shader validateLCDOp(BaseShaderGraphics g,
                            BaseTransform xform,
                            Texture tex0,
                            Texture tex1,
                            boolean firstPass,
                            Paint fillColor)

initLCDBuffer

public void initLCDBuffer(int width,
                          int height)

disposeLCDBuffer

public void disposeLCDBuffer()

getLCDBuffer

public RTTexture getLCDBuffer()

Specified by:

getLCDBuffer in class BaseContext

validateLCDBuffer

public void validateLCDBuffer(RenderTarget renderTarget)

blit

public abstract void blit(RTTexture srcRTT,
                          RTTexture dstRTT,
                          int srcX0,
                          int srcY0,
                          int srcX1,
                          int srcY1,
                          int dstX0,
                          int dstY0,
                          int dstX1,
                          int dstY1)

setRenderTarget

protected void setRenderTarget(RenderTarget target,
                               NGCamera camera,
                               boolean depthTest,
                               boolean state3D)

Specified by:

setRenderTarget in class BaseContext

releaseRenderTarget

protected void releaseRenderTarget()

Overrides:

releaseRenderTarget in class BaseContext