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PBO을 사용하여 스크린 샷을 찍었습니다. 그러나 결과 이미지는 모두 검은 색입니다. PBO 없이는 완벽하게 작동합니다. 이 일을하기 전에 돌봐야 할 것이 있습니까?Android 4.3 PBO가 작동하지 않습니다.
나는 심지어 FBO에 렌더링에 의해 시도하고 GLES30.glReadBuffer(GLES30.GL_COLOR_ATTACHMENT0),
public void SetupPBO(){
GLES30.glGenBuffers(1, pbuffers, 0);
GLES30.glBindBuffer(GLES30.GL_PIXEL_PACK_BUFFER, pbuffers[0]);
int size = (int)this.mScreenHeight * (int)this.mScreenWidth * 4;
GLES30.glBufferData(GLES30.GL_PIXEL_PACK_BUFFER, size, null, GLES30.GL_DYNAMIC_READ);
checkGlError("glReadBuffer");
GLES30.glBindBuffer(GLES30.GL_PIXEL_PACK_BUFFER, 0);
}
private void Render(float[] m) {
.......//Normal render logic
exportBitmap();
}
private void exportBitmap() {
int screenshotSize = (int)this.mScreenWidth * (int)this.mScreenHeight;
ByteBuffer bb = ByteBuffer.allocateDirect(screenshotSize * 4);
bb.order(ByteOrder.nativeOrder());
// set the target framebuffer to read
GLES30.glReadBuffer(GLES30.GL_FRONT);
checkGlError("glReadBuffer");
GLES30.glBindBuffer(GLES30.GL_PIXEL_PACK_BUFFER, pbuffers[0]);
GLES30.glReadPixels(0, 0, (int)mScreenWidth, (int)mScreenHeight, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, bb); //<------ not working ?????
int pixelsBuffer[] = new int[screenshotSize];
bb.asIntBuffer().get(pixelsBuffer);
bb = null;
for (int i = 0; i < screenshotSize; ++i) {
// The alpha and green channels' positions are preserved while the
// red and blue are swapped
pixelsBuffer[i] = ((pixelsBuffer[i] & 0xff00ff00))
| ((pixelsBuffer[i] & 0x000000ff) << 16)
| ((pixelsBuffer[i] & 0x00ff0000) >> 16);
}
Bitmap bitmap = Bitmap.createBitmap((int)mScreenWidth, (int)mScreenHeight, Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixelsBuffer, screenshotSize - (int)mScreenWidth, -(int)mScreenWidth, 0, 0, (int)mScreenWidth, (int)mScreenHeight);
SaveBitmap(bitmap);
}