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Added support for loading the following texture types: DXT1, DXT3 and DXT5.

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9178 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
3.0
Kae..pl 13 years ago
parent 8af8d87752
commit 3d22756dfc
3 changed files with 508 additions and 32 deletions
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  1. 304
      engine/src/blender/com/jme3/scene/plugins/blender/textures/TextureDecompressor.java
  2. 49
      engine/src/blender/com/jme3/scene/plugins/blender/textures/TextureHelper.java
  3. 187
      engine/src/blender/com/jme3/scene/plugins/blender/textures/TexturePixel.java

304
engine/src/blender/com/jme3/scene/plugins/blender/textures/TextureDecompressor.java
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@ -0,0 +1,304 @@
package com.jme3.scene.plugins.blender.textures;
import java.nio.ByteBuffer;
import java.util.logging.Logger;
import jme3tools.converters.RGB565;
import com.jme3.math.FastMath;
import com.jme3.texture.Image;
import com.jme3.texture.Image.Format;
import com.jme3.util.BufferUtils;
/**
* This class decompresses the given image (if necessary) to the RGBA8 format.
* Currently supported compressed textures are: DXT1, DXT3, DXT5.
* @author Marcin Roguski (Kaelthas)
*/
/*package*/ class TextureDecompressor {
private static final Logger LOGGER = Logger.getLogger(TextureDecompressor.class.getName());
/**
* This method decompresses the given image. If the given image is already
* decompressed nothing happens and it is simply returned.
*
* @param image
* the image to decompress
* @return the decompressed image
*/
public static Image decompress(Image image) {//TODO: support 3D textures
byte[] bytes = null;
TexturePixel[] colors = null;
ByteBuffer data = image.getData(0);
data.rewind();
Format format = image.getFormat();
DDSTexelData texelData = new DDSTexelData(data.remaining() / (format.getBitsPerPixel() * 2), image.getWidth(), image.getHeight(), format != Format.DXT1);
switch (format) {// TODO: DXT1A
case DXT1:// BC1
bytes = new byte[image.getWidth() * image.getHeight() * 4];
colors = new TexturePixel[] { new TexturePixel(), new TexturePixel(), new TexturePixel(), new TexturePixel() };
while (data.hasRemaining()) {
short c0 = data.getShort();
short c1 = data.getShort();
int col0 = RGB565.RGB565_to_ARGB8(c0);
int col1 = RGB565.RGB565_to_ARGB8(c1);
colors[0].fromARGB8(col0);
colors[1].fromARGB8(col1);
if (col0 > col1) {
// creating color2 = 2/3color0 + 1/3color1
colors[2].fromPixel(colors[0]);
colors[2].mult(2);
colors[2].add(colors[1]);
colors[2].divide(3);
// creating color3 = 1/3color0 + 2/3color1;
colors[3].fromPixel(colors[1]);
colors[3].mult(2);
colors[3].add(colors[0]);
colors[3].divide(3);
} else {
// creating color2 = 1/2color0 + 1/2color1
colors[2].fromPixel(colors[0]);
colors[2].add(colors[1]);
colors[2].mult(0.5f);
colors[3].fromARGB8(0);
}
int indexes = data.getInt();// 4-byte table with color indexes in decompressed table
texelData.add(colors, indexes);
}
break;
case DXT3:// BC2
bytes = new byte[image.getWidth() * image.getHeight() * 4];
colors = new TexturePixel[] { new TexturePixel(), new TexturePixel(), new TexturePixel(), new TexturePixel() };
while (data.hasRemaining()) {
long alpha = data.getLong();
float[] alphas = new float[16];
long alphasIndex = 0;
for (int i = 0; i < 16; ++i) {
alphasIndex |= i << (i * 4);
byte a = (byte) (((alpha >> (i * 4)) & 0x0F) << 4);
alphas[i] = a >= 0 ? a / 255.0f : 1.0f - (~a) / 255.0f;
}
short c0 = data.getShort();
short c1 = data.getShort();
int col0 = RGB565.RGB565_to_ARGB8(c0);
int col1 = RGB565.RGB565_to_ARGB8(c1);
colors[0].fromARGB8(col0);
colors[1].fromARGB8(col1);
// creating color2 = 2/3color0 + 1/3color1
colors[2].fromPixel(colors[0]);
colors[2].mult(2);
colors[2].add(colors[1]);
colors[2].divide(3);
// creating color3 = 1/3color0 + 2/3color1;
colors[3].fromPixel(colors[1]);
colors[3].mult(2);
colors[3].add(colors[0]);
colors[3].divide(3);
int indexes = data.getInt();// 4-byte table with color indexes in decompressed table
texelData.add(colors, indexes, alphas, alphasIndex);
}
break;
case DXT5:// BC3
bytes = new byte[image.getWidth() * image.getHeight() * 4];
colors = new TexturePixel[] { new TexturePixel(), new TexturePixel(), new TexturePixel(), new TexturePixel() };
float[] alphas = new float[8];
while (data.hasRemaining()) {
alphas[0] = data.get() * 255.0f;
alphas[1] = data.get() * 255.0f;
long alphaIndices = (int) data.get() | ((int) data.get() << 8) | ((int) data.get() << 16) | ((int) data.get() << 24) | ((int) data.get() << 32) | ((int) data.get() << 40);
if (alphas[0] > alphas[1]) {// 6 interpolated alpha values.
alphas[2] = (6 * alphas[0] + alphas[1]) / 7;
alphas[3] = (5 * alphas[0] + 2 * alphas[1]) / 7;
alphas[4] = (4 * alphas[0] + 3 * alphas[1]) / 7;
alphas[5] = (3 * alphas[0] + 4 * alphas[1]) / 7;
alphas[6] = (2 * alphas[0] + 5 * alphas[1]) / 7;
alphas[7] = (alphas[0] + 6 * alphas[1]) / 7;
} else {
alphas[2] = (4 * alphas[0] + alphas[1]) * 0.2f;
alphas[3] = (3 * alphas[0] + 2 * alphas[1]) * 0.2f;
alphas[4] = (2 * alphas[0] + 3 * alphas[1]) * 0.2f;
alphas[5] = (alphas[0] + 4 * alphas[1]) * 0.2f;
alphas[6] = 0;
alphas[7] = 1;
}
short c0 = data.getShort();
short c1 = data.getShort();
int col0 = RGB565.RGB565_to_ARGB8(c0);
int col1 = RGB565.RGB565_to_ARGB8(c1);
colors[0].fromARGB8(col0);
colors[1].fromARGB8(col1);
// creating color2 = 2/3color0 + 1/3color1
colors[2].fromPixel(colors[0]);
colors[2].mult(2);
colors[2].add(colors[1]);
colors[2].divide(3);
// creating color3 = 1/3color0 + 2/3color1;
colors[3].fromPixel(colors[1]);
colors[3].mult(2);
colors[3].add(colors[0]);
colors[3].divide(3);
int indexes = data.getInt();// 4-byte table with color
// indexes in decompressed table
texelData.add(colors, indexes, alphas, alphaIndices);
}
break;
default:
LOGGER.fine("Unsupported decompression format.");
}
if (bytes != null) {// writing the data to the result table
byte[] pixelBytes = new byte[4];
for (int i = 0; i < image.getWidth(); ++i) {
for (int j = 0; j < image.getHeight(); ++j) {
texelData.getRGBA8(i, j, pixelBytes);
bytes[(j * image.getWidth() + i) * 4] = pixelBytes[0];
bytes[(j * image.getWidth() + i) * 4 + 1] = pixelBytes[1];
bytes[(j * image.getWidth() + i) * 4 + 2] = pixelBytes[2];
bytes[(j * image.getWidth() + i) * 4 + 3] = pixelBytes[3];
}
}
return new Image(Format.RGBA8, image.getWidth(), image.getHeight(), BufferUtils.createByteBuffer(bytes));
}
return image;
}
/**
* The data that helps in bytes calculations for the result image.
*
* @author Marcin Roguski (Kaelthas)
*/
private static class DDSTexelData {
/** The colors of the texes. */
private TexturePixel[][] colors;
/** The indexes of the texels. */
private long[] indexes;
/** The alphas of the texels (might be null). */
private float[][] alphas;
/** The indexels of texels alpha values (might be null). */
private long[] alphaIndexes;
/** The counter of texel x column. */
private int xCounter;
/** The counter of texel y row. */
private int yCounter;
/** The width of the image in pixels. */
private int pixelWidth;
/** The height of the image in pixels. */
private int pixelHeight;
/** The total texel count. */
private int xTexelCount;
/**
* Constructor. Allocates the required memory. Initializes variables.
*
* @param textelsCount
* the total count of the texels
* @param pixelWidth
* the width of the image in pixels
* @param pixelHeight
* the height of the image in pixels
* @param isAlpha
* indicates if the memory for alpha values should be
* allocated
*/
public DDSTexelData(int textelsCount, int pixelWidth, int pixelHeight, boolean isAlpha) {
textelsCount = (pixelWidth * pixelHeight) >> 4;
this.colors = new TexturePixel[textelsCount][];
this.indexes = new long[textelsCount];
this.xTexelCount = pixelWidth >> 2;
this.yCounter = (pixelHeight >> 2) - 1;// xCounter is 0 for now
this.pixelHeight = pixelHeight;
this.pixelWidth = pixelWidth;
if (isAlpha) {
this.alphas = new float[textelsCount][];
this.alphaIndexes = new long[textelsCount];
}
}
/**
* This method adds a color and indexes for a texel.
*
* @param colors
* the colors of the texel
* @param indexes
* the indexes of the texel
*/
public void add(TexturePixel[] colors, int indexes) {
this.add(colors, indexes, null, 0);
}
/**
* This method adds a color, color indexes and alha values (with their
* indexes) for a texel.
*
* @param colors
* the colors of the texel
* @param indexes
* the indexes of the texel
* @param alphas
* the alpha values
* @param alphaIndexes
* the indexes of the given alpha values
*/
public void add(TexturePixel[] colors, int indexes, float[] alphas, long alphaIndexes) {
int index = yCounter * xTexelCount + xCounter;
this.colors[index] = colors;
this.indexes[index] = indexes;
if (alphas != null) {
this.alphas[index] = alphas;
this.alphaIndexes[index] = alphaIndexes;
}
++this.xCounter;
if (this.xCounter >= this.xTexelCount) {
this.xCounter = 0;
--this.yCounter;
}
}
/**
* This method returns the values of the pixel located on the given
* coordinates on the result image.
*
* @param x
* the x coordinate of the pixel
* @param y
* the y coordinate of the pixel
* @param result
* the table where the result is stored
*/
public void getRGBA8(int x, int y, byte[] result) {
int xTexetlIndex = (x % pixelWidth) / 4;
int yTexelIndex = (y % pixelHeight) / 4;
int texelIndex = yTexelIndex * xTexelCount + xTexetlIndex;
TexturePixel[] colors = this.colors[texelIndex];
// coordinates of the pixel in the selected texel
x = x - 4 * xTexetlIndex;// pixels are arranged from left to right
y = 3 - y - 4 * yTexelIndex;// pixels are arranged from bottom to top (that is why '3 - ...' is at the start)
int pixelIndexInTexel = (y * 4 + x) * (int) FastMath.log(colors.length, 2);
int alphaIndexInTexel = alphas != null ? (y * 4 + x) * (int) FastMath.log(alphas.length, 2) : 0;
// getting the pixel
int indexMask = colors.length - 1;
int colorIndex = (int) ((this.indexes[texelIndex] >> pixelIndexInTexel) & indexMask);
float alpha = this.alphas != null ? this.alphas[texelIndex][(int) ((this.alphaIndexes[texelIndex] >> alphaIndexInTexel) & 0x07)] : colors[colorIndex].alpha;
result[0] = (byte) (colors[colorIndex].red * 255.0f);
result[1] = (byte) (colors[colorIndex].green * 255.0f);
result[2] = (byte) (colors[colorIndex].blue * 255.0f);
result[3] = (byte) (alpha * 255.0f);
}
}
}

49
engine/src/blender/com/jme3/scene/plugins/blender/textures/TextureHelper.java
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@ -31,8 +31,25 @@
*/
package com.jme3.scene.plugins.blender.textures;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import jme3tools.converters.ImageToAwt;
import com.jme3.asset.AssetManager;
import com.jme3.asset.AssetNotFoundException;
import com.jme3.asset.BlenderKey;
import com.jme3.asset.BlenderKey.FeaturesToLoad;
import com.jme3.asset.*;
import com.jme3.asset.GeneratedTextureKey;
import com.jme3.asset.TextureKey;
import com.jme3.math.ColorRGBA;
import com.jme3.math.FastMath;
import com.jme3.math.Vector3f;
@ -53,17 +70,6 @@ import com.jme3.texture.Texture.WrapMode;
import com.jme3.texture.Texture2D;
import com.jme3.texture.Texture3D;
import com.jme3.util.BufferUtils;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import jme3tools.converters.ImageToAwt;
/**
* A class that is used in texture calculations.
@ -245,7 +251,11 @@ public class TextureHelper extends AbstractBlenderHelper {
float[] materialColorClone = materialColor.clone();//this array may change, so we copy it
Format format = texture.getImage().getFormat();
ByteBuffer data = texture.getImage().getData(0);
data.rewind();
Image decompressedImage = TextureDecompressor.decompress(texture.getImage());
data = decompressedImage.getData(0);
format = decompressedImage.getFormat();
int width = texture.getImage().getWidth();
int height = texture.getImage().getHeight();
int depth = texture.getImage().getDepth();
@ -356,7 +366,7 @@ public class TextureHelper extends AbstractBlenderHelper {
* For example the color remains untouched if the texture is of Luminance type.
* The luminance defines the interaction between the material color and color defined
* for texture blending.
* If the type has 3 or more color channels then the material color is replaces with the texture's
* If the type has 3 or more color channels then the material color is replaced with the texture's
* color and later blended with the defined blend color.
* All alpha values (if present) are ignored and not used during blending.
* @param data
@ -419,6 +429,13 @@ public class TextureHelper extends AbstractBlenderHelper {
pixelValue = data.get(); // ignore alpha
materialColor[3] = pixelValue >= 0 ? pixelValue / 255.0f : 1.0f - (~pixelValue) / 255.0f;
break;
case DXT1:
break;
case DXT1A:
case DXT3:
case DXT5:
break;
case Luminance16:
case Luminance16Alpha16:
case Alpha16:
@ -429,10 +446,6 @@ public class TextureHelper extends AbstractBlenderHelper {
case Depth24:
case Depth32:
case Depth32F:
case DXT1:
case DXT1A:
case DXT3:
case DXT5:
case Intensity16:
case Intensity8:
case LATC:

187
engine/src/blender/com/jme3/scene/plugins/blender/textures/TexturePixel.java
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@ -1,28 +1,100 @@
package com.jme3.scene.plugins.blender.textures;
import com.jme3.math.ColorRGBA;
import com.jme3.math.FastMath;
import com.jme3.texture.Image.Format;
import java.nio.ByteBuffer;
import java.util.logging.Level;
import java.util.logging.Logger;
/*package*/ class TexturePixel implements Cloneable {
private static final Logger LOGGER = Logger.getLogger(TexturePixel.class.getName());
public float intensity, red, green, blue, alpha;
/**
* The class that stores the pixel values of a texture.
*
* @author Marcin Roguski (Kaelthas)
*/
/* package */class TexturePixel implements Cloneable {
private static final Logger LOGGER = Logger.getLogger(TexturePixel.class.getName());
/** The pixel data. */
public float intensity, red, green, blue, alpha;
/**
* Copies the values from the given pixel.
*
* @param pixel
* the pixel that we read from
*/
public void fromPixel(TexturePixel pixel) {
this.intensity = pixel.intensity;
this.red = pixel.red;
this.green = pixel.green;
this.blue = pixel.blue;
this.alpha = pixel.alpha;
}
/**
* Copies the values from the given color.
*
* @param colorRGBA
* the color that we read from
*/
public void fromColor(ColorRGBA colorRGBA) {
this.intensity = 0;
this.red = colorRGBA.r;
this.green = colorRGBA.g;
this.blue = colorRGBA.b;
this.alpha = colorRGBA.a;
}
/**
* Copies the values from the given values.
*
* @param a
* the alpha value
* @param r
* the red value
* @param g
* the green value
* @param b
* the blue value
*/
public void fromARGB8(float a, float r, float g, float b) {
this.alpha = a;
this.red = r;
this.green = g;
this.blue = b;
}
/**
* Copies the values from the given integer that stores the ARGB8 data.
*
* @param argb8
* the data stored in an integer
*/
public void fromARGB8(int argb8) {
byte pixelValue = (byte) ((argb8 & 0xFF000000) >> 24);
this.alpha = pixelValue >= 0 ? pixelValue / 255.0f : 1.0f - (~pixelValue) / 255.0f;
pixelValue = (byte) ((argb8 & 0xFF0000) >> 16);
this.red = pixelValue >= 0 ? pixelValue / 255.0f : 1.0f - (~pixelValue) / 255.0f;
pixelValue = (byte) ((argb8 & 0xFF00) >> 8);
this.green = pixelValue >= 0 ? pixelValue / 255.0f : 1.0f - (~pixelValue) / 255.0f;
pixelValue = (byte) (argb8 & 0xFF);
this.blue = pixelValue >= 0 ? pixelValue / 255.0f : 1.0f - (~pixelValue) / 255.0f;
}
/**
* Copies the data from the given image.
*
* @param imageFormat
* the image format
* @param data
* the image data
* @param pixelIndex
* the index of the required pixel
*/
public void fromImage(Format imageFormat, ByteBuffer data, int pixelIndex) {
int firstByteIndex;
byte pixelValue;
switch(imageFormat) {
switch (imageFormat) {
case ABGR8:
firstByteIndex = pixelIndex << 2;
pixelValue = data.get(firstByteIndex);
@ -74,21 +146,108 @@ import java.util.logging.Logger;
this.intensity = this.blue = this.red = this.green = this.alpha = 0.0f;
}
}
/**
* Stores the data in the given table.
*
* @param result
* the result table
*/
public void toRGBA8(byte[] result) {
result[0] = (byte) (this.red * 255.0f);
result[1] = (byte) (this.green * 255.0f);
result[2] = (byte) (this.blue * 255.0f);
result[3] = (byte) (this.alpha * 255.0f);
}
/**
* Merges two pixels (adds the values of each color).
*
* @param pixel
* the pixel we merge with
*/
public void merge(TexturePixel pixel) {
float oneMinusAlpha = 1 - pixel.alpha;
this.red = oneMinusAlpha * this.red + pixel.alpha*pixel.red;
this.green = oneMinusAlpha * this.green + pixel.alpha*pixel.green;
this.blue = oneMinusAlpha * this.blue + pixel.alpha*pixel.blue;
//alpha should be always 1.0f as a result
this.red = oneMinusAlpha * this.red + pixel.alpha * pixel.red;
this.green = oneMinusAlpha * this.green + pixel.alpha * pixel.green;
this.blue = oneMinusAlpha * this.blue + pixel.alpha * pixel.blue;
// alpha should be always 1.0f as a result
}
/**
* This method clears the pixel values.
*/
public void clear() {
this.intensity = this.blue = this.red = this.green = this.alpha = 0.0f;
}
/**
* This method adds the calues of the given pixel to the current pixel.
*
* @param pixel
* the pixel we add
*/
public void add(TexturePixel pixel) {
this.red += pixel.red;
this.green += pixel.green;
this.blue += pixel.blue;
this.alpha += pixel.alpha;
this.intensity += pixel.intensity;
}
/**
* This method multiplies the values of the given pixel by the given value.
*
* @param value
* multiplication factor
*/
public void mult(float value) {
this.red *= value;
this.green *= value;
this.blue *= value;
this.alpha *= value;
this.intensity *= value;
}
/**
* This method divides the values of the given pixel by the given value.
* ATTENTION! Beware of the zero value. This will cause you NaN's in the
* pixel values.
*
* @param value
* division factor
*/
public void divide(float value) {
this.red /= value;
this.green /= value;
this.blue /= value;
this.alpha /= value;
this.intensity /= value;
}
/**
* This method clamps the pixel values to the given borders.
*
* @param min
* the minimum value
* @param max
* the maximum value
*/
public void clamp(float min, float max) {
this.red = FastMath.clamp(this.red, min, max);
this.green = FastMath.clamp(this.green, min, max);
this.blue = FastMath.clamp(this.blue, min, max);
this.alpha = FastMath.clamp(this.alpha, min, max);
this.intensity = FastMath.clamp(this.intensity, min, max);
}
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
@Override
public String toString() {
return "[" + red + ", " + green + ", " + blue + ", " + alpha + " {" + intensity + "}]";
}
}

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