private void begin(Writer writer, IndWriter indexer, int mode, int blockSize) {
mDraw.checkErr();
mActiveWriter = writer;
mActiveIndexer = indexer;
mActiveMode = mode;
mVertBuf.clear();
int bytes = mVertBuf.capacity();
int vertBytes = writer.mVertWriter.bytesPerElem();
mActiveCap = (bytes / (vertBytes * blockSize)) * blockSize;
mActivePos = 0;
writer.mProgram.bind(mDraw);
writer.mVao.bind(mDraw);
mVbo.bind(mDraw);
if (indexer != null) {
indexer.reset();
mIndBuf.clear();
mIbo.bind(mDraw);
}
DrawUtil.checkErr();
}
public void vert(float x, float y, float z) {
Vec.put(x, y, z, mVert.mPos);
mActiveWriter.mVertWriter.write(mVert, mVertBuf);
if (mActiveIndexer != null) {
mActiveIndexer.write(mActivePos, mIndBuf);
}
if (++mActivePos < mActiveCap) {
return;
}
flush();
}
private void flush() {
DrawEnv d = mDraw;
mVertBuf.flip();
GLES30.glBufferSubData(GL_ARRAY_BUFFER, 0, mVertBuf.remaining(), mVertBuf);
mVertBuf.clear();
if (mActiveIndexer == null) {
GLES30.glDrawArrays(mActiveMode, 0, mActivePos);
} else {
mIndBuf.flip();
GLES30.glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, mIndBuf.remaining(), mIndBuf);
GLES30.glDrawElements(mActiveMode, mActiveIndexer.count(), GL_UNSIGNED_INT, 0);
mIndBuf.clear();
}
mActivePos = 0;
}