JOGL v2.6.0-rc-20250712
JOGL, High-Performance Graphics Binding for Java™ (public API).
GLClearOnInitReshape.java
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28package com.jogamp.opengl.test.junit.jogl.demos;
29
30import com.jogamp.opengl.GL;
31import com.jogamp.opengl.GLAutoDrawable;
32import com.jogamp.opengl.GLEventListener;
33
34public class GLClearOnInitReshape implements GLEventListener {
35 int lastWidth, lastHeight;
36 boolean doClear;
37
38 @Override
39 public void init(final GLAutoDrawable drawable) {
40 lastWidth = drawable.getSurfaceWidth();
41 lastHeight = drawable.getSurfaceHeight();
42 doClear = true;
43 }
44
45 @Override
46 public void dispose(final GLAutoDrawable drawable) { }
47
48 @Override
49 public void display(final GLAutoDrawable drawable) {
50 if( doClear ) {
52 doClear = false;
53 }
54 }
55
56 @Override
57 public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
58 if( lastHeight != height || lastWidth != width ) {
59 doClear = true;
60 lastWidth = width;
61 lastHeight = height;
62 }
63 }
64}
void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height)
Called by the drawable during the first repaint after the component has been resized.
void dispose(final GLAutoDrawable drawable)
Notifies the listener to perform the release of all OpenGL resources per GLContext,...
void init(final GLAutoDrawable drawable)
Called by the drawable immediately after the OpenGL context is initialized.
void display(final GLAutoDrawable drawable)
Called by the drawable to initiate OpenGL rendering by the client.
A higher-level abstraction than GLDrawable which supplies an event based mechanism (GLEventListener) ...
GL getGL()
Returns the GL pipeline object this GLAutoDrawable uses.
int getSurfaceWidth()
Returns the width of this GLDrawable's surface client area in pixel units.
int getSurfaceHeight()
Returns the height of this GLDrawable's surface client area in pixel units.
Declares events which client code can use to manage OpenGL rendering into a GLAutoDrawable.
static final int GL_COLOR_BUFFER_BIT
GL_ES_VERSION_2_0, GL_VERSION_1_1, GL_VERSION_1_0, GL_VERSION_ES_1_0 Define "GL_COLOR_BUFFER_BIT" wit...
Definition: GL.java:390
void glClear(int mask)
Entry point to C language function: void {@native glClear}(GLbitfield mask) Part of GL_ES_VERSION_...