Example usage for android.opengl GLES20 glGenTextures

Introduction

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

Prototype

public static native void glGenTextures(int n, int[] textures, int offset);

Source Link

Usage

From source file:Main.java

public static int createOESTextureID() {
    final int[] tex = new int[1];
    GLES20.glGenTextures(1, tex, 0);
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, tex[0]);
    GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_S,
            GLES20.GL_CLAMP_TO_EDGE);/*from  w w  w  .  j  a va  2s.  c  om*/
    GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_T,
            GLES20.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
    GLES20.glTexParameteri(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);

    return tex[0];
}

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From source file:Main.java

public static int setTexture(Bitmap bitmap) {
    GLES20.glGenTextures(1, texturenames, 0);

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texturenames[0]);

    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);

    GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
    bitmap.recycle();/*from   w  w  w . j a  v a 2  s  .co m*/

    return texturenames[0];
}

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From source file:Main.java

public static int loadTextureFromResource(Context context, int resId) {
    final int textureHandle[] = new int[1];

    GLES20.glGenTextures(1, textureHandle, 0);
    if (textureHandle[0] != 0) {
        final BitmapFactory.Options op = new BitmapFactory.Options();
        op.inScaled = false;//from ww w  .jav a2s  .co  m
        final Bitmap bmp = BitmapFactory.decodeResource(context.getResources(), resId, op);

        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle[0]);

        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_NEAREST);

        GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bmp, 0);
    } else {
        throw new RuntimeException("Error Loading Texture");
    }

    return textureHandle[0];
}

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From source file:Main.java

public static int loadTexture(final Context context, final int resourceId) {
    final int[] textureHandle = new int[1];

    GLES20.glGenTextures(1, textureHandle, 0);

    if (textureHandle[0] != 0) {
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inScaled = false; // No pre-scaling

        // Read in the resource
        final Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resourceId, options);

        // Bind to the texture in OpenGL
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle[0]);

        // 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_NEAREST);

        // 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();/*from   w  w  w.  ja  v a2s .c  om*/
    }

    if (textureHandle[0] == 0) {
        throw new RuntimeException("Error loading texture.");
    }

    return textureHandle[0];
}

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From source file:Main.java

public static int loadTexture(String s) {
    Bitmap img;//from   w ww  .j  av a  2s . c  om
    try {
        img = BitmapFactory.decodeStream(context.getAssets().open(s));
    } catch (IOException e) {
        return 0;
    }
    int tex[] = new int[1];
    GLES20.glGenTextures(1, tex, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, tex[0]);
    GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, img, 0);
    GLES20.glGenerateMipmap(GLES20.GL_TEXTURE_2D);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR_MIPMAP_LINEAR);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_CLAMP_TO_EDGE);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
    img.recycle();
    return tex[0];
}

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From source file:Main.java

public static int loadTexture(String s) {
    Bitmap img;/*from w ww  .ja  v  a  2 s.  co  m*/
    try {
        img = BitmapFactory.decodeStream(context.getAssets().open(s));
    } catch (IOException e) {
        return -1;
    }
    int tex[] = new int[1];
    GLES20.glGenTextures(1, tex, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, tex[0]);
    GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, img, 0);
    GLES20.glGenerateMipmap(GLES20.GL_TEXTURE_2D);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR_MIPMAP_LINEAR);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameteri(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_CLAMP_TO_EDGE);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
    img.recycle();
    return tex[0];
}

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From source file:Main.java

/**
 * Generate texture with standard parameters.
 *//* w ww . ja v a2 s  . com*/
public static int generateTexture(int target) {
    final int textureArray[] = new int[1];
    GLES20.glGenTextures(1, textureArray, 0);
    final int textureId = textureArray[0];
    GLES20.glBindTexture(target, textureId);
    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
    checkNoGLES2Error("generateTexture");
    return textureId;
}

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From source file:Main.java

public static int loadTexture(Bitmap bitmap) {
    final int[] textureHandle = new int[1];

    GLES20.glGenTextures(1, textureHandle, 0);

    if (textureHandle[0] != 0) {
        //           final BitmapFactory.Options options = new BitmapFactory.Options();
        //           options.inScaled = false;   // No pre-scaling

        // Read in the resource
        //           final Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resourceId, options);

        // Bind to the texture in OpenGL
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle[0]);

        // Set filtering
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE); // Set U Wrapping
        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE); // Set V Wrapping

        // 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();//from   w  w  w. j  a v a 2  s . c om
    }

    if (textureHandle[0] == 0) {
        throw new RuntimeException("Error loading texture.");
    }

    return textureHandle[0];
}

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From source file:Main.java

/**
 * Loads a bitmap into memory then discards the bitmap.
 * @param bitmap//from   w  w  w .j a va  2 s  .co m
 * @param oldHandle   Handle to use.
 * @return
 */
public static int loadBitmap(Bitmap bitmap, int oldHandle, boolean recycle) {
    int h;

    int handle[] = new int[1];
    GLES20.glGenTextures(1, handle, 0);
    h = handle[0];
    //      
    //      if(oldHandle <= 0) {
    //         int handle[] = new int[1];
    //         GLES20.glGenTextures(1, handle, 0);
    //         h = handle[0];
    //      } else {
    //         h = oldHandle;
    //      }

    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, h);

    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
    GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);

    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);

    GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);

    if (recycle)
        bitmap.recycle();

    return h;
}

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From source file:Main.java

/**
 * Loads the texture with the given id.//from   w w  w  .  j ava  2s . c  o m
 *
 * @param context    the application's context
 * @param resourceId the id of the texture
 * @return the texture handle
 */
public static int loadTexture(final Context context, final int resourceId) {
    final int[] textureHandle = new int[1];

    if (!cachedTextureHandles.containsKey(resourceId)) {
        GLES20.glGenTextures(1, textureHandle, 0);

        if (textureHandle[0] != 0) {
            final BitmapFactory.Options options = new BitmapFactory.Options();
            options.inScaled = false; // Pre scaling off

            final Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resourceId);

            GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle[0]);
            GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_REPEAT);
            GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_REPEAT);

            GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);

            bitmap.recycle();

            if (textureHandle[0] == 0) {
                throw new RuntimeException("Error loading texture.");
            }

            cachedTextureHandles.put(resourceId, textureHandle[0]);
        }
    }
    return cachedTextureHandles.get(resourceId);
}

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