Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2016 nekocode
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import android.content.Context;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLES11Ext;
import android.opengl.GLES20;
import android.opengl.GLUtils;

import javax.microedition.khronos.opengles.GL10;

public class Main {
    public static int loadTexture(final Context context, final int resourceId, int[] size) {
        final int texId = genTexture();

        if (texId != 0) {
            final BitmapFactory.Options options = new BitmapFactory.Options();
            options.inScaled = false; // No pre-scaling
            options.inJustDecodeBounds = true;

            // Just decode bounds
            BitmapFactory.decodeResource(context.getResources(), resourceId, options);

            // Set return size
            size[0] = options.outWidth;
            size[1] = options.outHeight;

            // Decode
            options.inJustDecodeBounds = false;
            Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resourceId, options);

            // Load the bitmap into the bound texture.
            GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);

            // Recycle the bitmap, since its data has been loaded into OpenGL.
            bitmap.recycle();
        }

        return texId;
    }

    public static int genTexture() {
        return genTexture(GLES20.GL_TEXTURE_2D);
    }

    public static int genTexture(int textureType) {
        int[] genBuf = new int[1];
        GLES20.glGenTextures(1, genBuf, 0);
        GLES20.glBindTexture(textureType, genBuf[0]);

        // Set texture default draw parameters
        if (textureType == GLES11Ext.GL_TEXTURE_EXTERNAL_OES) {
            GLES20.glTexParameterf(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
            GLES20.glTexParameterf(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
            GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GL10.GL_TEXTURE_WRAP_S,
                    GL10.GL_CLAMP_TO_EDGE);
            GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GL10.GL_TEXTURE_WRAP_T,
                    GL10.GL_CLAMP_TO_EDGE);

        } else {
            GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
            GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
            GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT);
            GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT);
        }

        return genBuf[0];
    }
}