Example usage for android.opengl GLUtils texImage2D

Introduction

In this page you can find the example usage for android.opengl GLUtils texImage2D.

Prototype

public static void texImage2D(int target, int level, int internalformat, Bitmap bitmap, int type, int border) 

Source Link

Document

A version of texImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification.

Usage

From source file:Main.java

public static int loadTexture(Resources resources, int resource, int internalFormat, boolean flip) {
    int[] textures = s_LOAD_TEXTURE_ID.get();
    if (textures == null) {
        textures = new int[1];
        s_LOAD_TEXTURE_ID.set(textures);
    }/* w w w .  j  a  v a  2 s.  co m*/

    glActiveTexture(GL_TEXTURE0);
    glGenTextures(1, textures, 0);

    int texture = textures[0];
    glBindTexture(GL_TEXTURE_2D, texture);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    Bitmap bitmap = BitmapFactory.decodeResource(resources, resource);

    final int width = bitmap.getWidth();
    final int height = bitmap.getHeight();

    if (flip) {
        Matrix matrix = new Matrix();
        matrix.setScale(1, -1);
        matrix.postTranslate(0, height);
        Bitmap flipBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);

        bitmap.recycle();
        bitmap = flipBitmap;
    }

    GLUtils.texImage2D(GL_TEXTURE_2D, 0, internalFormat, bitmap, GL_UNSIGNED_BYTE, 0);

    bitmap.recycle();

    glBindTexture(GL_TEXTURE_2D, 0);

    return texture;
}

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