Added in API level 1

GLUtils

class GLUtils
kotlin.Any
   ↳ android.opengl.GLUtils

Utility class to help bridging OpenGL ES and Android APIs.

Summary

Public methods
static String!

Return a string for the EGL error code, or the hex representation if the error is unknown.
static Int

return the internal format as defined by OpenGL ES of the supplied bitmap.
static Int
getType(bitmap: Bitmap!)

Return the type as defined by OpenGL ES of the supplied bitmap, if there is one.
static Unit
texImage2D(target: Int, level: Int, bitmap: Bitmap!, border: Int)

A version of texImage2D that determines the internalFormat and type automatically.
static Unit
texImage2D(target: Int, level: Int, internalformat: Int, bitmap: Bitmap!, border: Int)

Calls glTexImage2D() on the current OpenGL context.
static Unit
texImage2D(target: Int, level: Int, internalformat: Int, bitmap: Bitmap!, type: Int, border: Int)

A version of texImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification.
static Unit
texSubImage2D(target: Int, level: Int, xoffset: Int, yoffset: Int, bitmap: Bitmap!)

Calls glTexSubImage2D() on the current OpenGL context.
static Unit
texSubImage2D(target: Int, level: Int, xoffset: Int, yoffset: Int, bitmap: Bitmap!, format: Int, type: Int)

A version of texSubImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification.

Public methods

getEGLErrorString

Added in API level 14
static fun getEGLErrorString(error: Int): String!

Return a string for the EGL error code, or the hex representation if the error is unknown.

Parameters
error Int: The EGL error to convert into a String.
Return
String! An error string corresponding to the EGL error code.

getInternalFormat

Added in API level 1
static fun getInternalFormat(bitmap: Bitmap!): Int

return the internal format as defined by OpenGL ES of the supplied bitmap.

Parameters
bitmap Bitmap!:
Return
Int the internal format of the bitmap.

getType

Added in API level 1
static fun getType(bitmap: Bitmap!): Int

Return the type as defined by OpenGL ES of the supplied bitmap, if there is one. If the bitmap is stored in a compressed format, it may not have a valid OpenGL ES type.

Parameters
bitmap Bitmap!:
Return
Int the OpenGL ES type of the bitmap.
Exceptions
java.lang.IllegalArgumentException if the bitmap does not have a type.

texImage2D

Added in API level 1
static fun texImage2D(
    target: Int, 
    level: Int, 
    bitmap: Bitmap!, 
    border: Int
): Unit

A version of texImage2D that determines the internalFormat and type automatically.

Parameters
target Int:
level Int:
bitmap Bitmap!:
border Int:

texImage2D

Added in API level 1
static fun texImage2D(
    target: Int, 
    level: Int, 
    internalformat: Int, 
    bitmap: Bitmap!, 
    border: Int
): Unit

Calls glTexImage2D() on the current OpenGL context. If no context is current the behavior is the same as calling glTexImage2D() with no current context, that is, eglGetError() will return the appropriate error. Unlike glTexImage2D() bitmap cannot be null and will raise an exception in that case. All other parameters are identical to those used for glTexImage2D(). NOTE: this method doesn't change GL_UNPACK_ALIGNMENT, you must make sure to set it properly according to the supplied bitmap. Whether or not bitmap can have non power of two dimensions depends on the current OpenGL context. Always check glGetError() some time after calling this method, just like when using OpenGL directly.

Parameters
target Int:
level Int:
internalformat Int:
bitmap Bitmap!:
border Int:

texImage2D

Added in API level 1
static fun texImage2D(
    target: Int, 
    level: Int, 
    internalformat: Int, 
    bitmap: Bitmap!, 
    type: Int, 
    border: Int
): Unit

A version of texImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification. The actual type and internalformat of the bitmap must be compatible with the specified type and internalformat parameters.

Parameters
target Int:
level Int:
internalformat Int:
bitmap Bitmap!:
type Int:
border Int:

texSubImage2D

Added in API level 1
static fun texSubImage2D(
    target: Int, 
    level: Int, 
    xoffset: Int, 
    yoffset: Int, 
    bitmap: Bitmap!
): Unit

Calls glTexSubImage2D() on the current OpenGL context. If no context is current the behavior is the same as calling glTexSubImage2D() with no current context, that is, eglGetError() will return the appropriate error. Unlike glTexSubImage2D() bitmap cannot be null and will raise an exception in that case. All other parameters are identical to those used for glTexSubImage2D(). NOTE: this method doesn't change GL_UNPACK_ALIGNMENT, you must make sure to set it properly according to the supplied bitmap. Whether or not bitmap can have non power of two dimensions depends on the current OpenGL context. Always check glGetError() some time after calling this method, just like when using OpenGL directly.

Parameters
target Int:
level Int:
xoffset Int:
yoffset Int:
bitmap Bitmap!:

texSubImage2D

Added in API level 1
static fun texSubImage2D(
    target: Int, 
    level: Int, 
    xoffset: Int, 
    yoffset: Int, 
    bitmap: Bitmap!, 
    format: Int, 
    type: Int
): Unit

A version of texSubImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification.

Parameters
target Int:
level Int:
xoffset Int:
yoffset Int:
bitmap Bitmap!:
type Int: