Module gl1

Package de.grogra.glsl

Class GLSLDisplay

java.lang.Object

de.grogra.imp.awt.ViewComponentAdapter

de.grogra.glsl.GLDisplay

de.grogra.glsl.GLSLDisplay

All Implemented Interfaces:

ViewComponent, RenderState, ComponentWrapper, Selectable, Disposable, ImageObserver, Runnable, EventListener, javax.media.opengl.GLEventListener

public class GLSLDisplay
extends GLDisplay

Extension to the GLDisplay class to work with shaders generated by ShaderOGL

Author:

Konni Hartmann, nmi

Nested Class Summary

Nested classes/interfaces inherited from class de.grogra.glsl.GLDisplay

GLDisplay.GLVisitor

Field Summary

Fields

Modifier and Type	Field	Description
static final boolean	DEBUG	Debug switch.
protected boolean	optionShowBGImage
static final EnumerationType	TONEMAPPING_TYPE	Enumeration of the available Tonemapping-Algorithms.

Fields inherited from class de.grogra.glsl.GLDisplay

curHighlight, dlSphere, dlSupershape, endPoint, gridColor, lineWidth, LOD_LEVELS, optionGridColorB, optionGridColorG, optionGridColorR, optionGridDimension, optionGridSpacing, optionRenderAsWireframe, optionShowAxes, optionShowDisplaySize, optionShowGrid, optionShowPoints, polyCache, pool, RENDER_MODE, startPoint, supportsVBO, visitor

Fields inherited from class de.grogra.imp.awt.ViewComponentAdapter

DISPOSED, DISPOSING, RENDER_OVERLAY, RENDER_OVERLAY_FINISHED, RENDERED_IMAGE, RENDERING, RENDERING_OVERLAY, REPAINT_MASK

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Fields inherited from interface de.grogra.imp3d.RenderState

CURRENT_HIGHLIGHT

Fields inherited from interface de.grogra.imp.ViewComponent

ALL, CHANGED, MIN_USER_FLAG, SCENE, SELECTION, TOOLS

Constructor Summary

Constructors

Constructor	Description
GLSLDisplay()

Method Summary

Modifier and Type	Method	Description
void	drawBoxImpl(javax.media.opengl.GL gl, float x0, float y0, float z0, float x1, float y1, float z1)
void	drawGrid(javax.media.opengl.GL gl)
void	drawParallelogram(float length, Vector3f axis, float scaleU, float scaleV, Shader s, int highlight, boolean asWireframe, Matrix4d t)
void	drawPlane(Shader s, int highlight, boolean asWireframe, Matrix4d t)	Draw an x/y plane.
void	drawPoint(Tuple3f origin, int pixelSize, Tuple3f color, int highlight, Matrix4d t)	Draw a single point with the specified pixel size and color.
void	drawPolygons(Polygonizable pz, Object obj, boolean asNode, Shader s, int highlight, boolean asWireframe, Matrix4d t)
void	drawPolygons(Polygonizable pz, Object obj, boolean asNode, Shader s, int highlight, boolean asWireframe, Matrix4d t, int defaultCulledSide, boolean cullingEnabled, boolean normalMode)	Draw a polygonizable Object.
void	drawRectangle(int x, int y, int w, int h, Tuple3f color)	Draw a rectangle from (x/y) to (x+w/y+h) with the specified color.
void	fillRectangle(int x, int y, int w, int h, Tuple3f color)	Draw a filled rectangle from (x/y) to (x+w/y+h) with the specified color.
void	findAndActivateShader(Shader s)	Searches Shader-Cache for a GLSL-Shader corresponding to the given Shader s.
GLSLManagedShader	findShader(Shader s)	Searches Shader-Cache for a GLSL-Shader corresponding to the given Shader s.
float	getBackgroundAlpha()
float	getBackgroundColorB()
float	getBackgroundColorG()
float	getBackgroundColorR()
float	getBrightness()
OpenGLState	getCurrentGLState()	Returns the OpenGLState associated with the current GLContext.
int	getDebugRenderPass()
static int	getDepthStencilSetup()
int	getMaxDepth()
TextureManager	getTextureManager()
int	getTonemapping()
Matrix4d	getTransformation(Matrix4d t)
GLDisplay.GLVisitor	getVisitor()
void	init()	Initialize OpenGL (Proteus).
void	init(javax.media.opengl.GLAutoDrawable d)	Initialise opengl state and set default values.
void	initView(View view, EventListener listener)	Initializes this component.
boolean	isOptionAltDrawing()
boolean	isOptionAutoAdjustBrightness()
boolean	isOptionEdgeFiltering()
boolean	isOptionLighting()
boolean	isOptionPhysicalLighting()
boolean	isOptionRenderAsWireframe()
boolean	isOptionShaderAntialiasing()
boolean	isOptionShowBGImage()
boolean	isOptionShowDiffuseSkyLight()
boolean	isOptionShowGrid()
boolean	isOptionShowShadows()
boolean	isOptionShowSky()
boolean	isVisible(int layer)	Tests if the given layer is currently visible.
protected void	optionValueChanged(String name, Object value)
static void	printDebugInfo(String string)	Output a string to OUT if the DEBUG switch is set.
static void	printDebugInfoN(String string)	Output a string to OUT if the DEBUG switch is set.
protected void	render(int flags)	Render the scene graph.
void	renderScene()	This method renders the Scene.
void	resize()	If called, all associated FBOs are resized to the current viewports size.
void	setGL(javax.media.opengl.GL gl)	Sets the gl object as current active GL object.
boolean	setupBGShader(Sky node)	Setup a sky.
void	setUpContext(javax.media.opengl.GLContext context)	Setter for GL.
void	setVisitor(GLDisplay.GLVisitor visitor)	Sets the active visitor.
static void	ViewOrtho(javax.media.opengl.GL gl, int width, int height)	construct an orthogonal view matrix for easing full screen Quad drawing
static void	ViewPerspective(javax.media.opengl.GL gl)	change view matrix back to default

Methods inherited from class de.grogra.glsl.GLDisplay

display, displayChanged, dispose, drawAxes, drawBox, drawDisplaySize, drawFrustum, drawFrustumIrregular, drawLamella, drawLine, drawPointCloud, drawPrismRectangular, drawSphere, drawSphereSegmentSolid, drawString, drawSupershape, drawTextBlock, drawWithDisplayList, estimateScaleAt, estimateScaleAt, getComponent, getCurrentHighlight, getCurrentShader, getLOD, getObserverForRenderer, getPool, getShader, getView3D, getWindowPos, imageUpdate, initRender, invokeRender, isExtensionSupported, makeSnapshot, reshape

Methods inherited from class de.grogra.imp.awt.ViewComponentAdapter

checkRepaint, checkRepaintWrapException, disposeRenderer, disposeView, getColor, getColor, getDisplayResolution, getFactory, getFontMetrics, getGlobalLOD, getIntColor, getInterruptedException, getOption, getRenderGraphState, getView, initFactory, installListeners, invokeRenderSync, isRenderingOverlay, render, render, renderUninterruptibly, repaint, run, toSelection, uninstallListeners, updateResolution

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.grogra.imp3d.RenderState

getFontMetrics, getRenderGraphState

Methods inherited from interface de.grogra.pf.ui.edit.Selectable

toSelection

Field Details

DEBUG

public static final boolean DEBUG

Debug switch. May be used to test if debug output should be printed. This variable is set to true by specifying the argument "-Dgroimp.debug.GLSLDisplay=1" for the Java VM.

TONEMAPPING_TYPE

public static final EnumerationType TONEMAPPING_TYPE

Enumeration of the available Tonemapping-Algorithms. This is used by the configuration Dialog of OpenGL (Proteus).

optionShowBGImage

protected boolean optionShowBGImage

Constructor Details

GLSLDisplay

public GLSLDisplay()

Method Details

printDebugInfoN

public static void printDebugInfoN(String string)

Output a string to OUT if the DEBUG switch is set. This version terminates the line.

Parameters:

string - The String to be printed.

printDebugInfo

public static void printDebugInfo(String string)

Output a string to OUT if the DEBUG switch is set. This version does not terminate the line.

Parameters:

string - The String to be printed.

initView

public void initView(View view,
 EventListener listener)

Description copied from interface: ViewComponent

Initializes this component. This method sets the view within which this view component is used to display the graph. It also sets an event listener. this has to be informed of mouse and keys events within the view component by implementations of this method.

Specified by:

initView in interface ViewComponent

Overrides:

initView in class GLDisplay

Parameters:

view - the containing view

listener - mouse and key events will be reported to this listener

render

protected void render(int flags)
               throws InterruptedException

Description copied from class: GLDisplay

Render the scene graph. This function will traverse the scene graph and render all objects of it. These steps are performed:

1. get GL
2. if GL changed, delete textures
3. clear the frame buffer
4. draw background image (i.e. from povray)
5. cleaar depth buffer
6. set projection matrix
7. check if the scene graph changed since last render, than remember that and perform an update of the light sources
8. walk graph first time, visit every object, update lights if necessary
9. if lights have changed, draw the scene again
10. walk graph second time, visit highlighted objects
11. disable lighting and depth buffer
12. walk graph third time, visit tools (i.e. arrows to move objects)
13. enable lighting and depth buffer

Overrides:

render in class GLDisplay

Parameters:

flags - combination of bit masks

Throws:

InterruptedException - if the rendering has been interrupted

init

public void init(javax.media.opengl.GLAutoDrawable d)

Initialise opengl state and set default values. All functions can assume those values being set upon call (i.e. MatrixMode as GL_MODELVIEW). If a function changes any of those values, it has to restore its state before calling another function or exiting. This also wraps DebugGL arround the current GL-Object if DEBUG is set to true resulting in detailed Debug-Output if an GLError occurs.

Specified by:

init in interface javax.media.opengl.GLEventListener

Overrides:

init in class GLDisplay

drawBoxImpl

public void drawBoxImpl(javax.media.opengl.GL gl,
 float x0,
 float y0,
 float z0,
 float x1,
 float y1,
 float z1)

drawPlane

public void drawPlane(Shader s,
 int highlight,
 boolean asWireframe,
 Matrix4d t)

Description copied from class: GLDisplay

Draw an x/y plane.

Specified by:

drawPlane in interface RenderState

Overrides:

drawPlane in class GLDisplay

drawPolygons

public void drawPolygons(Polygonizable pz,
 Object obj,
 boolean asNode,
 Shader s,
 int highlight,
 boolean asWireframe,
 Matrix4d t)

Specified by:

drawPolygons in interface RenderState

Overrides:

drawPolygons in class GLDisplay

Parameters:

pz -

obj -

asNode -

s -

highlight -

t -

drawPolygons

public void drawPolygons(Polygonizable pz,
 Object obj,
 boolean asNode,
 Shader s,
 int highlight,
 boolean asWireframe,
 Matrix4d t,
 int defaultCulledSide,
 boolean cullingEnabled,
 boolean normalMode)

Draw a polygonizable Object. This Method adds additional parameters for dealing with different culling modes set by OpenGL.

Parameters:

pz -

obj -

asNode -

s -

highlight -

t - Transformation matrix. Input for getTransformation(Matrix4d)

defaultCulledSide - Default state for culling. This is one of GL.FRONT, GL.GL_BACK

cullingEnabled - True if culling is currently enabled in OpenGL. False else.

normalMode - True if this is used for drawing visible geometry. False if used for drawing into Shadow Map.

See Also:

• invalid reference

  GLDisplay#drawPolygons(Polygonizable, Object, boolean, Shader, int, Matrix4d)

drawParallelogram

public void drawParallelogram(float length,
 Vector3f axis,
 float scaleU,
 float scaleV,
 Shader s,
 int highlight,
 boolean asWireframe,
 Matrix4d t)

Specified by:

drawParallelogram in interface RenderState

Overrides:

drawParallelogram in class GLDisplay

drawGrid

public void drawGrid(javax.media.opengl.GL gl)

ViewOrtho

public static void ViewOrtho(javax.media.opengl.GL gl,
 int width,
 int height)

construct an orthogonal view matrix for easing full screen Quad drawing

Parameters:

gl - Current GL Object. Used to issue OpenGL commands.

width - Width of the orthogonal projection in OpenGL units.

height - Height of the orthogonal projection in OpenGL units.

ViewPerspective

public static void ViewPerspective(javax.media.opengl.GL gl)

change view matrix back to default

Parameters:

gl - Current GL Object. Used to issue OpenGL commands.

drawRectangle

public void drawRectangle(int x,
 int y,
 int w,
 int h,
 Tuple3f color)

Description copied from class: GLDisplay

Draw a rectangle from (x/y) to (x+w/y+h) with the specified color.

Specified by:

drawRectangle in interface RenderState

Overrides:

drawRectangle in class GLDisplay

fillRectangle

public void fillRectangle(int x,
 int y,
 int w,
 int h,
 Tuple3f color)

Description copied from class: GLDisplay

Draw a filled rectangle from (x/y) to (x+w/y+h) with the specified color.

Specified by:

fillRectangle in interface RenderState

Overrides:

fillRectangle in class GLDisplay

drawPoint

public void drawPoint(Tuple3f origin,
 int pixelSize,
 Tuple3f color,
 int highlight,
 Matrix4d t)

Description copied from class: GLDisplay

Draw a single point with the specified pixel size and color. Although OpenGL provides a function to draw points, the point is represented by a sphere, because some graphics cards/drivers seem to have problems setting the size for the point.

Specified by:

drawPoint in interface RenderState

Overrides:

drawPoint in class GLDisplay

Parameters:

pixelSize - size of point on screen in pixels

getTransformation

public Matrix4d getTransformation(Matrix4d t)

Overrides:

getTransformation in class GLDisplay

optionValueChanged

protected void optionValueChanged(String name,
 Object value)

Overrides:

optionValueChanged in class GLDisplay

isOptionShowGrid

public boolean isOptionShowGrid()

Returns:

true, if grid should be rendered. false, else

isOptionRenderAsWireframe

public boolean isOptionRenderAsWireframe()

Returns:

true, if grid should be rendered. false, else

isOptionShowBGImage

public boolean isOptionShowBGImage()

Returns:

true, if the background (checkboard) image should be rendered. false, else

getBackgroundColorR

public float getBackgroundColorR()

Returns:

red value of background color

getBackgroundColorG

public float getBackgroundColorG()

Returns:

green value of background color

getBackgroundColorB

public float getBackgroundColorB()

Returns:

blue value of background color

getBackgroundAlpha

public float getBackgroundAlpha()

Returns:

alpha value of background

isOptionLighting

public boolean isOptionLighting()

Returns:

true, if scene should be rendered with all lights. false, only use default directional light.

isOptionShowSky

public boolean isOptionShowSky()

Returns:

true, if scene sky should be rendered.

isOptionShowShadows

public boolean isOptionShowShadows()

Returns:

true, if shadows should be rendered and displayed.

isOptionEdgeFiltering

public boolean isOptionEdgeFiltering()

Returns:

true, if edge-filtering should be used. This Option is currently unused since a working filtering approach was not implemented.

isOptionAltDrawing

public boolean isOptionAltDrawing()

Returns:

true, if alternative drawing methods should be called. Up to now this will only result in infinite planes.

isOptionPhysicalLighting

public boolean isOptionPhysicalLighting()

Returns:

true, if lights intensity should decrease by the squared distance from the lights source.

isOptionShowDiffuseSkyLight

public boolean isOptionShowDiffuseSkyLight()

Returns:

true, if diffuse light of sky-Nodes should be approximated.

isOptionShaderAntialiasing

public boolean isOptionShaderAntialiasing()

Returns:

true, if anti-aliasing material-shaders should be used.

isOptionAutoAdjustBrightness

public boolean isOptionAutoAdjustBrightness()

Returns:

true, if brightness should be automatically adjusted for the rendered image.

getBrightness

public float getBrightness()

Returns:

the brightness factor used to brighten the rendered image.

getTonemapping

public int getTonemapping()

Returns:

the index of the choosen tonemapping algorithm. For now this is: 0: Linear tonemapping 1: DDR (Dynamic Range Reduction). See paper at link.

getDebugRenderPass

public int getDebugRenderPass()

Returns:

the index of a renderpass, which should be displayed. This will render the content of each HDR- and DeferredShading-FBO as seen at the specified RenderPass to the screen.

getMaxDepth

public int getMaxDepth()

Returns:

Number of Depth-Peeling passes used to display transparent materials.

getVisitor

public GLDisplay.GLVisitor getVisitor()

Returns:

The current active Visitor to traverse the Scene-Tree.

setVisitor

public void setVisitor(GLDisplay.GLVisitor visitor)

Sets the active visitor. The previous visitor will not be saved. Use getVisitor() to store a reference.

Parameters:

visitor - The visitor Object that replaces the active visitor.

getTextureManager

public TextureManager getTextureManager()

Returns:

The Manager used to the Textures for each translated material.

isVisible

public boolean isVisible(int layer)

Tests if the given layer is currently visible.

Parameters:

layer - The layer that should be tested.

Returns:

true, if the layer is visible.

getCurrentGLState

public OpenGLState getCurrentGLState()

Returns the OpenGLState associated with the current GLContext.

Returns:

The current OpenGLState.

See Also:

• OpenGLState

getDepthStencilSetup

public static int getDepthStencilSetup()

init

public void init()

Initialize OpenGL (Proteus). This will initialize all Collections

setGL

public void setGL(javax.media.opengl.GL gl)

Sets the gl object as current active GL object. Effectively this will call OpenGLState.setGL(GL).

Parameters:

gl - The GL object

resize

public void resize()

If called, all associated FBOs are resized to the current viewports size.

setUpContext

public void setUpContext(javax.media.opengl.GLContext context)

Setter for GL. This will also reset glState and cleanup the Java-Side of the used OpenGL-Objects.

Parameters:

context - The new GL-context that should be used for all actions.

renderScene

public void renderScene()

This method renders the Scene. This includes all objects of the Scene-Graph. Additional rendering like highlighting of objects and the size of the current viewport will be handled by GLDisplay.render(int).

findAndActivateShader

public void findAndActivateShader(Shader s)

Searches Shader-Cache for a GLSL-Shader corresponding to the given Shader s. If no GLSL-Shader is found one is created. The Shader is then activated.

Parameters:

s - The GroIMP-Shader.

findShader

public GLSLManagedShader findShader(Shader s)

Searches Shader-Cache for a GLSL-Shader corresponding to the given Shader s. If no GLSL-Shader is found one is created.

Parameters:

s - The GroIMP-Shader.

Returns:

The GLSL-Shader.

setupBGShader

public boolean setupBGShader(Sky node)

Setup a sky. This method is used by a visitor to store a sky-node. Since it is considered a hack this method will be removed in upcoming commits of the source-code.

Parameters:

node -

Returns:

false, if a sky has already been set.