Added in API level 8

Summary: Nested Classes | Ctors | Methods | Inherited Methods

ETC1Util

Kotlin |Java

public class ETC1Util
extends Object

java.lang.Object
↳	android.opengl.ETC1Util

Utility methods for using ETC1 compressed textures.

Summary

Nested classes
`class`	`ETC1Util.ETC1Texture` A utility class encapsulating a compressed ETC1 texture.

Public constructors
`ETC1Util()`

Public methods
`static ETC1Util.ETC1Texture`	`compressTexture(Buffer input, int width, int height, int pixelSize, int stride)` Helper function that compresses an image into an ETC1Texture.
`static ETC1Util.ETC1Texture`	`createTexture(InputStream input)` Create a new ETC1Texture from an input stream containing a PKM formatted compressed texture.
`static boolean`	`isETC1Supported()` Check if ETC1 texture compression is supported by the active OpenGL ES context.
`static void`	`loadTexture(int target, int level, int border, int fallbackFormat, int fallbackType, InputStream input)` Convenience method to load an ETC1 texture whether or not the active OpenGL context supports the ETC1 texture compression format.
`static void`	`loadTexture(int target, int level, int border, int fallbackFormat, int fallbackType, ETC1Util.ETC1Texture texture)` Convenience method to load an ETC1 texture whether or not the active OpenGL context supports the ETC1 texture compression format.
`static void`	`writeTexture(ETC1Util.ETC1Texture texture, OutputStream output)` Helper function that writes an ETC1Texture to an output stream formatted as a PKM file.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

ETC1Util

public ETC1Util ()

Public methods

compressTexture

Added in API level 8

public static ETC1Util.ETC1Texture compressTexture (Buffer input, 
                int width, 
                int height, 
                int pixelSize, 
                int stride)

Helper function that compresses an image into an ETC1Texture.

Parameters
`input`	`Buffer`: a native order direct buffer containing the image data
`width`	`int`: the width of the image in pixels
`height`	`int`: the height of the image in pixels
`pixelSize`	`int`: the size of a pixel in bytes (2 or 3)
`stride`	`int`: the width of a line of the image in bytes

Returns
`ETC1Util.ETC1Texture`	the ETC1 texture.

createTexture

Added in API level 8

public static ETC1Util.ETC1Texture createTexture (InputStream input)

Create a new ETC1Texture from an input stream containing a PKM formatted compressed texture.

Parameters
`input`	`InputStream`: an input stream containing a PKM formatted compressed texture.

Returns
`ETC1Util.ETC1Texture`	an ETC1Texture read from the input stream.

Throws
	java.io.IOException
`IOException`

isETC1Supported

Added in API level 8

public static boolean isETC1Supported ()

Check if ETC1 texture compression is supported by the active OpenGL ES context.

Returns
`boolean`	true if the active OpenGL ES context supports ETC1 texture compression.

loadTexture

Added in API level 8

public static void loadTexture (int target, 
                int level, 
                int border, 
                int fallbackFormat, 
                int fallbackType, 
                InputStream input)

Convenience method to load an ETC1 texture whether or not the active OpenGL context supports the ETC1 texture compression format.

Parameters
`target`	`int`: the texture target.
`level`	`int`: the texture level
`border`	`int`: the border size. Typically 0.
`fallbackFormat`	`int`: the format to use if ETC1 texture compression is not supported. Must be GL_RGB.
`fallbackType`	`int`: the type to use if ETC1 texture compression is not supported. Can be either GL_UNSIGNED_SHORT_5_6_5, which implies 16-bits-per-pixel, or GL_UNSIGNED_BYTE, which implies 24-bits-per-pixel.
`input`	`InputStream`: the input stream containing an ETC1 texture in PKM format.

Throws
	java.io.IOException
`IOException`

loadTexture

Added in API level 8

public static void loadTexture (int target, 
                int level, 
                int border, 
                int fallbackFormat, 
                int fallbackType, 
                ETC1Util.ETC1Texture texture)

Convenience method to load an ETC1 texture whether or not the active OpenGL context supports the ETC1 texture compression format.

Parameters
`target`	`int`: the texture target.
`level`	`int`: the texture level
`border`	`int`: the border size. Typically 0.
`fallbackFormat`	`int`: the format to use if ETC1 texture compression is not supported. Must be GL_RGB.
`fallbackType`	`int`: the type to use if ETC1 texture compression is not supported. Can be either GL_UNSIGNED_SHORT_5_6_5, which implies 16-bits-per-pixel, or GL_UNSIGNED_BYTE, which implies 24-bits-per-pixel.
`texture`	`ETC1Util.ETC1Texture`: the ETC1 to load.

writeTexture

Added in API level 8

public static void writeTexture (ETC1Util.ETC1Texture texture, 
                OutputStream output)

Helper function that writes an ETC1Texture to an output stream formatted as a PKM file.

Parameters
`texture`	`ETC1Util.ETC1Texture`: the input texture.
`output`	`OutputStream`: the stream to write the formatted texture data to.

Throws
	java.io.IOException
`IOException`

ETC1Util

Summary

Nested classes

Public constructors

Public methods

Inherited methods

Public constructors

ETC1Util

Public methods

compressTexture

createTexture

isETC1Supported

loadTexture

loadTexture

writeTexture