Package panamagl.platform.macos

Class FBO_macOS

java.lang.Object

panamagl.offscreen.AFBO

panamagl.platform.macos.FBO_macOS

All Implemented Interfaces:

panamagl.offscreen.FBO

public class FBO_macOS
extends panamagl.offscreen.AFBO
implements panamagl.offscreen.FBO

A frame buffer object, or FBO_macOS, can render OpenGL into an offscreen buffer that can later be converted to a BufferedImage. See : https://www.khronos.org/opengl/wiki/Framebuffer_Object https://www.khronos.org/opengl/wiki/Common_Mistakes https://www.khronos.org/opengl/wiki/Framebuffer_Object_Extension_Examples#Quick_example,_render_to_texture_(2D) https://developer.apple.com/library/archive/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_offscreen/opengl_offscreen.html Hint : to debug this class, invoke a program using it with flag -Dopengl.fbo.FBO

Author:

Martin Pernollet

Field Summary

Fields

Modifier and Type	Field	Description
protected int	border
protected int	channels
protected int	level

Fields inherited from class panamagl.offscreen.AFBO

auto, debug, format, frameBufferIds, height, idFrameBuffer, idRenderBuffer, idTexture, internalFormat, pixelBuffer, pixels, prepared, renderArena, renderBufferIds, textureBufferIds, textureType, width

Constructor Summary

Constructors

Constructor	Description
FBO_macOS()
FBO_macOS(int width, int height)

Method Summary

Modifier and Type	Method	Description
protected void	init()	Initialize pointers to OpenGL extensions allowing to perform offscreen rendering
void	prepare(panamagl.opengl.GL gl)	Prepare resources held by this FBO utility.
MemorySegment	readPixels(panamagl.opengl.GL gl)	Return all pixels.
void	release(panamagl.opengl.GL gl)	Release resources held by this FBO utility.
protected void	unbindFramebuffer()

Methods inherited from class panamagl.offscreen.AFBO

diagnoseError, getHeight, getWidth, isPrepared, prepareRenderArena, releaseRenderArena, resize

Methods inherited from class java.lang.Object

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

Methods inherited from interface panamagl.offscreen.FBO

getHeight, getWidth, isPrepared, resize

Field Details

level

protected int level

border

protected int border

channels

protected int channels

Constructor Details

FBO_macOS

public FBO_macOS()

FBO_macOS

public FBO_macOS(int width,
 int height)

Method Details

init

protected void init()

Initialize pointers to OpenGL extensions allowing to perform offscreen rendering

prepare

public void prepare(panamagl.opengl.GL gl)

Prepare resources held by this FBO utility.

Specified by:

prepare in interface panamagl.offscreen.FBO

release

public void release(panamagl.opengl.GL gl)

Release resources held by this FBO utility.

Specified by:

release in interface panamagl.offscreen.FBO

readPixels

public MemorySegment readPixels(panamagl.opengl.GL gl)

Return all pixels. Their lifetime is bounded to the AFBO.renderArena.

Specified by:

readPixels in interface panamagl.offscreen.FBO

unbindFramebuffer

protected void unbindFramebuffer()