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/*
* Copyright 2012 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.metsci.glimpse.jogamp.opengl.util.awt.text;
import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import com.jogamp.opengl.GLExtensions;
/**
* {@link GlyphRenderer} for use with OpenGL 2.
*/
/*@VisibleForTesting*/
/*@NotThreadSafe*/
public final class GlyphRendererGL2 extends AbstractGlyphRenderer
{
/**
* True if using vertex arrays.
*/
private boolean useVertexArrays = true;
/**
* Constructs a {@link GlyphRendererGL2}.
*/
/*@VisibleForTesting*/
public GlyphRendererGL2( )
{
// empty
}
@Override
protected void doBeginRendering( /*@Nonnull*/ final GL gl, final boolean ortho, /*@Nonnegative*/ final int width, /*@Nonnegative*/ final int height, final boolean disableDepthTest )
{
Check.notNull( gl, "GL cannot be null" );
Check.argument( width >= 0, "Width cannot be negative" );
Check.argument( height >= 0, "Height cannot be negative" );
final GL2 gl2 = gl.getGL2( );
// Change general settings
gl2.glPushAttrib( getAttribMask( ortho ) );
gl2.glDisable( GL2.GL_LIGHTING );
gl2.glEnable( GL2.GL_BLEND );
gl2.glBlendFunc( GL2.GL_ONE, GL2.GL_ONE_MINUS_SRC_ALPHA );
gl2.glEnable( GL2.GL_TEXTURE_2D );
gl2.glTexEnvi( GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE, GL2.GL_MODULATE );
// Set up transformations
if ( ortho )
{
if ( disableDepthTest )
{
gl2.glDisable( GL2.GL_DEPTH_TEST );
}
gl2.glDisable( GL2.GL_CULL_FACE );
gl2.glMatrixMode( GL2.GL_PROJECTION );
gl2.glPushMatrix( );
gl2.glLoadIdentity( );
gl2.glOrtho( 0, width, 0, height, -1, +1 );
gl2.glMatrixMode( GL2.GL_MODELVIEW );
gl2.glPushMatrix( );
gl2.glLoadIdentity( );
gl2.glMatrixMode( GL2.GL_TEXTURE );
gl2.glPushMatrix( );
gl2.glLoadIdentity( );
}
}
/*@Nonnull*/
protected QuadPipeline doCreateQuadPipeline( /*@Nonnull*/ final GL gl )
{
Check.notNull( gl, "GL cannot be null" );
final GL2 gl2 = gl.getGL2( );
if ( useVertexArrays )
{
if ( gl2.isExtensionAvailable( GLExtensions.VERSION_1_5 ) )
{
return new QuadPipelineGL15( gl2 );
}
else if ( gl2.isExtensionAvailable( "GL_VERSION_1_1" ) )
{
return new QuadPipelineGL11( );
}
else
{
return new QuadPipelineGL10( );
}
}
else
{
return new QuadPipelineGL10( );
}
}
protected void doDispose( /*@Nonnull*/ final GL gl )
{
Check.notNull( gl, "GL cannot be null" );
}
@Override
protected void doEndRendering( /*@Nonnull*/ final GL gl )
{
Check.notNull( gl, "GL cannot be null" );
final GL2 gl2 = gl.getGL2( );
// Reset transformations
if ( isOrthoMode( ) )
{
gl2.glMatrixMode( GL2.GL_PROJECTION );
gl2.glPopMatrix( );
gl2.glMatrixMode( GL2.GL_MODELVIEW );
gl2.glPopMatrix( );
gl2.glMatrixMode( GL2.GL_TEXTURE );
gl2.glPopMatrix( );
}
// Reset general settings
gl2.glPopAttrib( );
}
@Override
protected void doSetColor( /*@Nonnull*/ final GL gl, final float r, final float g, final float b, final float a )
{
Check.notNull( gl, "GL cannot be null" );
final GL2 gl2 = gl.getGL2( );
gl2.glColor4f( r, g, b, a );
}
@Override
protected void doSetTransform3d( /*@Nonnull*/ final GL gl, /*@Nonnull*/ final float[] value, final boolean transpose )
{
Check.notNull( gl, "GL cannot be null" );
Check.notNull( value, "Value cannot be null" );
// FIXME: Could implement this...
throw new UnsupportedOperationException( "Use standard GL instead" );
}
@Override
protected void doSetTransformOrtho( /*@Nonnull*/ final GL gl, /*@Nonnegative*/ final int width, /*@Nonnegative*/ final int height )
{
Check.notNull( gl, "GL cannot be null" );
Check.argument( width >= 0, "Width cannot be negative" );
Check.argument( height >= 0, "Height cannot be negative" );
final GL2 gl2 = gl.getGL2( );
gl2.glMatrixMode( GL2.GL_PROJECTION );
gl2.glPushMatrix( );
gl2.glLoadIdentity( );
gl2.glOrtho( 0, width, 0, height, -1, +1 );
gl2.glMatrixMode( GL2.GL_MODELVIEW );
gl2.glPushMatrix( );
gl2.glLoadIdentity( );
}
/**
* Returns attribute bits for {@code glPushAttrib} calls.
*
* @param ortho True if using orthographic projection
* @return Attribute bits for {@code glPushAttrib} calls
*/
private static int getAttribMask( final boolean ortho )
{
return GL2.GL_ENABLE_BIT | GL2.GL_TEXTURE_BIT | GL2.GL_COLOR_BUFFER_BIT | ( ortho ? ( GL2.GL_DEPTH_BUFFER_BIT | GL2.GL_TRANSFORM_BIT ) : 0 );
}
@Override
public boolean getUseVertexArrays( )
{
return useVertexArrays;
}
@Override
public void setUseVertexArrays( final boolean useVertexArrays )
{
if ( useVertexArrays != this.useVertexArrays )
{
dirtyPipeline( );
this.useVertexArrays = useVertexArrays;
}
}
}
