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Re-fix: Grouped filters with filterCount%2==0 are flipped #231

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Re-fix: Grouped filters with filterCount%2==0 are flipped #231

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9 changes: 0 additions & 9 deletions library/src/jp/co/cyberagent/android/gpuimage/GPUImageFilterGroup.java
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,6 @@ public class GPUImageFilterGroup extends GPUImageFilter {

private final FloatBuffer mGLCubeBuffer;
private final FloatBuffer mGLTextureBuffer;
private final FloatBuffer mGLTextureFlipBuffer;

/**
* Instantiates a new GPUImageFilterGroup with no filters.
Expand Down Expand Up @@ -73,12 +72,6 @@ public GPUImageFilterGroup(List<GPUImageFilter> filters) {
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
mGLTextureBuffer.put(TEXTURE_NO_ROTATION).position(0);

float[] flipTexture = TextureRotationUtil.getRotation(Rotation.NORMAL, false, true);
mGLTextureFlipBuffer = ByteBuffer.allocateDirect(flipTexture.length * 4)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
mGLTextureFlipBuffer.put(flipTexture).position(0);
}

public void addFilter(GPUImageFilter aFilter) {
Expand Down Expand Up @@ -199,8 +192,6 @@ public void onDraw(final int textureId, final FloatBuffer cubeBuffer,

if (i == 0) {
filter.onDraw(previousTexture, cubeBuffer, textureBuffer);
} else if (i == size - 1) {
filter.onDraw(previousTexture, mGLCubeBuffer, (size % 2 == 0) ? mGLTextureFlipBuffer : mGLTextureBuffer);
} else {
filter.onDraw(previousTexture, mGLCubeBuffer, mGLTextureBuffer);
}
Expand Down
17 changes: 15 additions & 2 deletions library/src/jp/co/cyberagent/android/gpuimage/OpenGlUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@

import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Matrix;
import android.hardware.Camera.Size;
import android.opengl.GLES20;
import android.opengl.GLUtils;
Expand All @@ -34,6 +35,9 @@ public static int loadTexture(final Bitmap img, final int usedTexId) {

public static int loadTexture(final Bitmap img, final int usedTexId, final boolean recycle) {
int textures[] = new int[1];

Bitmap flippedBitmap = flipBitmap(img);

if (usedTexId == NO_TEXTURE) {
GLES20.glGenTextures(1, textures, 0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[0]);
Expand All @@ -46,15 +50,18 @@ public static int loadTexture(final Bitmap img, final int usedTexId, final boole
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,
GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);

GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, img, 0);
GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, flippedBitmap, 0);
} else {
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, usedTexId);
GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, 0, 0, img);
GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, 0, 0, flippedBitmap);
textures[0] = usedTexId;
}
if (recycle) {
img.recycle();
}

flippedBitmap.recycle();

return textures[0];
}

Expand Down Expand Up @@ -138,4 +145,10 @@ public static float rnd(final float min, final float max) {
float fRandNum = (float) Math.random();
return min + (max - min) * fRandNum;
}

private static Bitmap flipBitmap(Bitmap bitmap) {
Matrix flip = new Matrix();
flip.postScale(1f, -1f);
return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), flip, true);
}
}
16 changes: 8 additions & 8 deletions library/src/jp/co/cyberagent/android/gpuimage/util/TextureRotationUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,29 +21,29 @@
public class TextureRotationUtil {

public static final float TEXTURE_NO_ROTATION[] = {
0.0f, 1.0f,
1.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
};

public static final float TEXTURE_ROTATED_90[] = {
1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
0.0f, 0.0f,
0.0f, 1.0f,
};
public static final float TEXTURE_ROTATED_180[] = {
1.0f, 0.0f,
0.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
};
public static final float TEXTURE_ROTATED_270[] = {
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
1.0f, 1.0f,
1.0f, 0.0f,
};

private TextureRotationUtil() {
Expand Down