Example usage for android.opengl GLES20 GL_LINEAR

Introduction

In this page you can find the example usage for android.opengl GLES20 GL_LINEAR.

Prototype

int GL_LINEAR

To view the source code for android.opengl GLES20 GL_LINEAR.

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Usage

From source file:com.tumblr.cardboard.Tumblr3DActivity.java

/**
 * Loads a bitmap into OpenGL./*from   w  w  w.  j a  v  a 2s  .  c om*/
 *
 * @param texIndex the desired texture index
 * @param bitmap   the bitmap to put into OpenGL
 */
private void loadTextureInternal(int texIndex, Bitmap bitmap, boolean recycle) {

    GLES20.glGenTextures(1, mTextureIds, texIndex);

    Log.d(TAG, "loading texture: " + texIndex + " -> " + mTextureIds[texIndex]);

    if (mTextureIds[texIndex] != INVALID_TEXTURE && bitmap != null && !bitmap.isRecycled()) {

        // Set the active texture unit
        GLES20.glActiveTexture(GLES20.GL_TEXTURE0 + texIndex);

        Matrix.setIdentityM(mImageRect[texIndex], 0);
        Matrix.scaleM(mImageRect[texIndex], 0, 1f, (float) bitmap.getHeight() / bitmap.getWidth(), 1f);

        // Bind to the texture in OpenGL
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureIds[texIndex]);

        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);

        // Set filtering
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);

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

        mRectTextureIds[texIndex] = mTextureIds[texIndex];
    } else {
        Log.w(TAG, "Failed to load: " + texIndex);
    }

    if (mTextureIds[texIndex] == INVALID_TEXTURE) {
        Log.e(TAG, "Error loading texture.");
    }
}

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