102 lines
2.5 KiB
Java
102 lines
2.5 KiB
Java
/*
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* Copyright 2016 Hippo Seven
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hippo.gl.glrenderer;
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import android.opengl.GLES20;
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import android.util.Log;
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import javax.microedition.khronos.opengles.GL11;
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public abstract class NativeTexture extends BasicTexture {
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private static final String TAG = NativeTexture.class.getSimpleName();
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private boolean mContentValid = true;
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private boolean mOpaque = true;
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public void invalidateContent() {
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mContentValid = false;
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}
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public static void checkError() {
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int error = GLES20.glGetError();
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if (error != 0) {
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Throwable t = new Throwable();
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Log.e(TAG, "GL error: " + error, t);
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}
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}
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protected abstract void texImage(boolean init);
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private void uploadToCanvas(GLCanvas canvas) {
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// Get id
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mId = canvas.getGLId().generateTexture();
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// Prepare
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canvas.setTextureParameters(this);
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// Call glTexImage2D
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GLES20.glBindTexture(getTarget(), mId);
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checkError();
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texImage(true);
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setAssociatedCanvas(canvas);
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mState = STATE_LOADED;
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mContentValid = true;
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}
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public void updateContent(GLCanvas canvas) {
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if (!isLoaded()) {
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uploadToCanvas(canvas);
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} else if (!mContentValid) {
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// Call glTexSubImage2D
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GLES20.glBindTexture(getTarget(), mId);
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checkError();
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texImage(false);
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mContentValid = true;
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}
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}
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/**
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* Whether the content on GPU is valid.
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*/
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public boolean isContentValid() {
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return isLoaded() && mContentValid;
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}
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@Override
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protected boolean onBind(GLCanvas canvas) {
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updateContent(canvas);
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return isContentValid();
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}
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@Override
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protected int getTarget() {
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return GL11.GL_TEXTURE_2D;
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}
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public void setOpaque(boolean isOpaque) {
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mOpaque = isOpaque;
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}
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@Override
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public boolean isOpaque() {
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return mOpaque;
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}
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}
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