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authorKenneth Russel <[email protected]>2006-07-20 23:02:04 +0000
committerKenneth Russel <[email protected]>2006-07-20 23:02:04 +0000
commit0951bf0b28216ec2486816d72cdca0f90aca799b (patch)
tree14c48be3d5da70e9ef479d1fd6d56fe6d774a87a /src/classes/com/sun/opengl/util/texture
parent7e2876606bd89f8ca0229c74091793616e24bb92 (diff)
Fixed Issue 238: BufferedImage flips on call to ImageIO.newTexture
Now copy texture data in the case where it needs to be flipped vertically and restore the image afterward. git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@852 232f8b59-042b-4e1e-8c03-345bb8c30851
Diffstat (limited to 'src/classes/com/sun/opengl/util/texture')
-rwxr-xr-xsrc/classes/com/sun/opengl/util/texture/TextureData.java114
1 files changed, 81 insertions, 33 deletions
diff --git a/src/classes/com/sun/opengl/util/texture/TextureData.java b/src/classes/com/sun/opengl/util/texture/TextureData.java
index 91915438b..d03faa697 100755
--- a/src/classes/com/sun/opengl/util/texture/TextureData.java
+++ b/src/classes/com/sun/opengl/util/texture/TextureData.java
@@ -220,7 +220,12 @@ public class TextureData {
/**
* Constructs a new TextureData object with the specified parameters
- * and data contained in the given BufferedImage.
+ * and data contained in the given BufferedImage. Note that
+ * subsequent modifications to the BufferedImage after the
+ * construction of the TextureData object are not guaranteed to be
+ * visible in any Texture object created from the TextureData (and,
+ * in fact, the expectation should be that they will not be visible,
+ * although this behavior is explicitly left undefined).
*
* @param internalFormat the OpenGL internal format for the
* resulting texture; may be 0, in which case
@@ -335,41 +340,84 @@ public class TextureData {
ImageUtil.flipImageVertically(image);
}
- //
- // Note: Grabbing the DataBuffer will defeat Java2D's image
- // management mechanism (as of JDK 5/6, at least). This shouldn't
- // be a problem for most JOGL apps, but those that try to upload
- // the image into an OpenGL texture and then use the same image in
- // Java2D rendering might find the 2D rendering is not as fast as
- // it could be.
- //
-
- // Allow previously-selected pixelType (if any) to override that
- // we can infer from the DataBuffer
- DataBuffer data = image.getRaster().getDataBuffer();
- if (data instanceof DataBufferByte) {
- if (pixelType == 0) pixelType = GL.GL_UNSIGNED_BYTE;
- buffer = ByteBuffer.wrap(((DataBufferByte) data).getData());
- } else if (data instanceof DataBufferDouble) {
- throw new RuntimeException("DataBufferDouble rasters not supported by OpenGL");
- } else if (data instanceof DataBufferFloat) {
- if (pixelType == 0) pixelType = GL.GL_FLOAT;
- buffer = FloatBuffer.wrap(((DataBufferFloat) data).getData());
- } else if (data instanceof DataBufferInt) {
- // FIXME: should we support signed ints?
- if (pixelType == 0) pixelType = GL.GL_UNSIGNED_INT;
- buffer = IntBuffer.wrap(((DataBufferInt) data).getData());
- } else if (data instanceof DataBufferShort) {
- if (pixelType == 0) pixelType = GL.GL_SHORT;
- buffer = ShortBuffer.wrap(((DataBufferShort) data).getData());
- } else if (data instanceof DataBufferUShort) {
- if (pixelType == 0) pixelType = GL.GL_UNSIGNED_SHORT;
- buffer = ShortBuffer.wrap(((DataBufferShort) data).getData());
- } else {
- throw new RuntimeException("Unexpected DataBuffer type?");
+ try {
+ //
+ // Note: Grabbing the DataBuffer will defeat Java2D's image
+ // management mechanism (as of JDK 5/6, at least). This shouldn't
+ // be a problem for most JOGL apps, but those that try to upload
+ // the image into an OpenGL texture and then use the same image in
+ // Java2D rendering might find the 2D rendering is not as fast as
+ // it could be.
+ //
+
+ // Allow previously-selected pixelType (if any) to override that
+ // we can infer from the DataBuffer
+ DataBuffer data = image.getRaster().getDataBuffer();
+ if (data instanceof DataBufferByte) {
+ if (pixelType == 0) pixelType = GL.GL_UNSIGNED_BYTE;
+ buffer = ByteBuffer.wrap(copyIfNecessary(((DataBufferByte) data).getData(), flipVertically));
+ } else if (data instanceof DataBufferDouble) {
+ throw new RuntimeException("DataBufferDouble rasters not supported by OpenGL");
+ } else if (data instanceof DataBufferFloat) {
+ if (pixelType == 0) pixelType = GL.GL_FLOAT;
+ buffer = FloatBuffer.wrap(copyIfNecessary(((DataBufferFloat) data).getData(), flipVertically));
+ } else if (data instanceof DataBufferInt) {
+ // FIXME: should we support signed ints?
+ if (pixelType == 0) pixelType = GL.GL_UNSIGNED_INT;
+ buffer = IntBuffer.wrap(copyIfNecessary(((DataBufferInt) data).getData(), flipVertically));
+ } else if (data instanceof DataBufferShort) {
+ if (pixelType == 0) pixelType = GL.GL_SHORT;
+ buffer = ShortBuffer.wrap(copyIfNecessary(((DataBufferShort) data).getData(), flipVertically));
+ } else if (data instanceof DataBufferUShort) {
+ if (pixelType == 0) pixelType = GL.GL_UNSIGNED_SHORT;
+ buffer = ShortBuffer.wrap(copyIfNecessary(((DataBufferShort) data).getData(), flipVertically));
+ } else {
+ throw new RuntimeException("Unexpected DataBuffer type?");
+ }
+ } finally {
+ // Put image back right-side up if necessary
+ if (flipVertically) {
+ ImageUtil.flipImageVertically(image);
+ }
+ }
+ }
+
+ private byte[] copyIfNecessary(byte[] data, boolean needsCopy) {
+ if (needsCopy) {
+ return (byte[]) data.clone();
+ }
+ return data;
+ }
+
+ private short[] copyIfNecessary(short[] data, boolean needsCopy) {
+ if (needsCopy) {
+ return (short[]) data.clone();
}
+ return data;
}
+ private int[] copyIfNecessary(int[] data, boolean needsCopy) {
+ if (needsCopy) {
+ return (int[]) data.clone();
+ }
+ return data;
+ }
+
+ private float[] copyIfNecessary(float[] data, boolean needsCopy) {
+ if (needsCopy) {
+ return (float[]) data.clone();
+ }
+ return data;
+ }
+
+ private double[] copyIfNecessary(double[] data, boolean needsCopy) {
+ if (needsCopy) {
+ return (double[]) data.clone();
+ }
+ return data;
+ }
+
+
private void createFromImage(BufferedImage image) {
pixelType = 0; // Determine from image