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package com.jme3.renderer.android;
import android.graphics.Bitmap;
import android.opengl.GLES20;
import android.opengl.GLUtils;
import com.jme3.asset.AndroidImageInfo;
import com.jme3.math.FastMath;
import com.jme3.texture.Image;
import com.jme3.texture.Image.Format;
import java.nio.ByteBuffer;
import javax.microedition.khronos.opengles.GL10;
public class TextureUtil {
public static int convertTextureFormat(Format fmt){
switch (fmt){
case Alpha16:
case Alpha8:
return GL10.GL_ALPHA;
case Luminance8Alpha8:
case Luminance16Alpha16:
return GL10.GL_LUMINANCE_ALPHA;
case Luminance8:
case Luminance16:
return GL10.GL_LUMINANCE;
case RGB10:
case RGB16:
case BGR8:
case RGB8:
case RGB565:
return GL10.GL_RGB;
case RGB5A1:
case RGBA16:
case RGBA8:
return GL10.GL_RGBA;
case Depth:
return GLES20.GL_DEPTH_COMPONENT;
case Depth16:
return GLES20.GL_DEPTH_COMPONENT16;
case Depth24:
case Depth32:
case Depth32F:
throw new UnsupportedOperationException("Unsupported depth format: " + fmt);
case DXT1A:
throw new UnsupportedOperationException("Unsupported format: " + fmt);
default:
throw new UnsupportedOperationException("Unrecognized format: " + fmt);
}
}
private static void buildMipmap(Bitmap bitmap) {
int level = 0;
int height = bitmap.getHeight();
int width = bitmap.getWidth();
while (height >= 1 || width >= 1) {
//First of all, generate the texture from our bitmap and set it to the according level
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, level, bitmap, 0);
if (height == 1 || width == 1) {
break;
}
//Increase the mipmap level
level++;
height /= 2;
width /= 2;
Bitmap bitmap2 = Bitmap.createScaledBitmap(bitmap, width, height, true);
bitmap.recycle();
bitmap = bitmap2;
}
}
/**
* <code>uploadTextureBitmap</code> uploads a native android bitmap
* @param target
* @param bitmap
* @param generateMips
* @param powerOf2
*/
public static void uploadTextureBitmap(final int target, Bitmap bitmap, boolean generateMips, boolean powerOf2)
{
if (!powerOf2)
{
int width = bitmap.getWidth();
int height = bitmap.getHeight();
if (!FastMath.isPowerOfTwo(width) || !FastMath.isPowerOfTwo(height))
{
// scale to power of two
width = FastMath.nearestPowerOfTwo(width);
height = FastMath.nearestPowerOfTwo(height);
Bitmap bitmap2 = Bitmap.createScaledBitmap(bitmap, width, height, true);
bitmap.recycle();
bitmap = bitmap2;
}
}
if (generateMips)
{
buildMipmap(bitmap);
}
else
{
GLUtils.texImage2D(target, 0, bitmap, 0);
//bitmap.recycle();
}
}
public static void uploadTexture(
Image img,
int target,
int index,
int border,
boolean tdc,
boolean generateMips,
boolean powerOf2){
if (img.getEfficentData() instanceof AndroidImageInfo){
// If image was loaded from asset manager, use fast path
AndroidImageInfo imageInfo = (AndroidImageInfo) img.getEfficentData();
uploadTextureBitmap(target, imageInfo.getBitmap(), generateMips, powerOf2);
return;
}
// Otherwise upload image directly.
// Prefer to only use power of 2 textures here to avoid errors.
Image.Format fmt = img.getFormat();
ByteBuffer data;
if (index >= 0 || img.getData() != null && img.getData().size() > 0){
data = img.getData(index);
}else{
data = null;
}
int width = img.getWidth();
int height = img.getHeight();
int depth = img.getDepth();
boolean compress = false;
int internalFormat = -1;
int format = -1;
int dataType = -1;
switch (fmt){
case Alpha16:
case Alpha8:
format = GLES20.GL_ALPHA;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case Luminance8:
format = GLES20.GL_LUMINANCE;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case Luminance8Alpha8:
format = GLES20.GL_LUMINANCE_ALPHA;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case Luminance16Alpha16:
format = GLES20.GL_LUMINANCE_ALPHA;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case Luminance16:
format = GLES20.GL_LUMINANCE;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case RGB565:
format = GLES20.GL_RGB;
internalFormat = GLES20.GL_RGB565;
dataType = GLES20.GL_UNSIGNED_SHORT_5_6_5;
break;
case ARGB4444:
format = GLES20.GL_RGBA;
dataType = GLES20.GL_UNSIGNED_SHORT_4_4_4_4;
break;
case RGB10:
format = GLES20.GL_RGB;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case RGB16:
format = GLES20.GL_RGB;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case RGB5A1:
format = GLES20.GL_RGBA;
internalFormat = GLES20.GL_RGB5_A1;
dataType = GLES20.GL_UNSIGNED_SHORT_5_5_5_1;
break;
case RGB8:
format = GLES20.GL_RGB;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case BGR8:
format = GLES20.GL_RGB;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case RGBA16:
format = GLES20.GL_RGBA;
internalFormat = GLES20.GL_RGBA4;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case RGBA8:
format = GLES20.GL_RGBA;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case DXT1A:
format = GLES20.GL_COMPRESSED_TEXTURE_FORMATS;
dataType = GLES20.GL_UNSIGNED_BYTE;
case Depth:
format = GLES20.GL_DEPTH_COMPONENT;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case Depth16:
format = GLES20.GL_DEPTH_COMPONENT;
internalFormat = GLES20.GL_DEPTH_COMPONENT16;
dataType = GLES20.GL_UNSIGNED_BYTE;
break;
case Depth24:
case Depth32:
case Depth32F:
throw new UnsupportedOperationException("Unsupported depth format: " + fmt);
default:
throw new UnsupportedOperationException("Unrecognized format: " + fmt);
}
if (internalFormat == -1)
{
internalFormat = format;
}
if (data != null)
GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
int[] mipSizes = img.getMipMapSizes();
int pos = 0;
if (mipSizes == null){
if (data != null)
mipSizes = new int[]{ data.capacity() };
else
mipSizes = new int[]{ width * height * fmt.getBitsPerPixel() / 8 };
}
// XXX: might want to change that when support
// of more than paletted compressions is added..
if (compress){
data.clear();
GLES20.glCompressedTexImage2D(GLES20.GL_TEXTURE_2D,
1 - mipSizes.length,
format,
width,
height,
0,
data.capacity(),
data);
return;
}
for (int i = 0; i < mipSizes.length; i++){
int mipWidth = Math.max(1, width >> i);
int mipHeight = Math.max(1, height >> i);
int mipDepth = Math.max(1, depth >> i);
if (data != null){
data.position(pos);
data.limit(pos + mipSizes[i]);
}
if (compress && data != null){
GLES20.glCompressedTexImage2D(GLES20.GL_TEXTURE_2D,
i,
format,
mipWidth,
mipHeight,
0,
data.remaining(),
data);
}else{
GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D,
i,
internalFormat,
mipWidth,
mipHeight,
0,
format,
dataType,
data);
}
pos += mipSizes[i];
}
}
}
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