public
final
class
GLUtils
extends Object
| java.lang.Object | |
| ↳ | android.opengl.GLUtils |
Utility class to help bridging OpenGL ES and Android APIs.
Public methods | |
|---|---|
static
String
|
getEGLErrorString(int error)
Return a string for the EGL error code, or the hex representation if the error is unknown. |
static
int
|
getInternalFormat(Bitmap bitmap)
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
void
|
texImage2D(int target, int level, Bitmap bitmap, int border)
A version of texImage2D that determines the internalFormat and type automatically. |
static
void
|
texImage2D(int target, int level, int internalformat, Bitmap bitmap, int border)
Calls glTexImage2D() on the current OpenGL context. |
static
void
|
texImage2D(int target, int level, int internalformat, Bitmap bitmap, int type, int border)
A version of texImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification. |
static
void
|
texSubImage2D(int target, int level, int xoffset, int yoffset, Bitmap bitmap, int format, int type)
A version of texSubImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification. |
static
void
|
texSubImage2D(int target, int level, int xoffset, int yoffset, Bitmap bitmap)
Calls glTexSubImage2D() on the current OpenGL context. |
Inherited methods | |
|---|---|
 From
class
java.lang.Object
| |
String getEGLErrorString (int error)
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. |
| Returns | |
|---|---|
String |
An error string corresponding to the EGL error code. |
int getInternalFormat (Bitmap bitmap)
return the internal format as defined by OpenGL ES of the supplied bitmap.
| Returns | |
|---|---|
int |
the internal format of the bitmap. |
int getType (Bitmap bitmap)
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.
| Returns | |
|---|---|
int |
the OpenGL ES type of the bitmap. |
| Throws | |
|---|---|
IllegalArgumentException |
if the bitmap does not have a type. |
Developers
void texImage2D (int target,
int level,
Bitmap bitmap,
int border)
A version of texImage2D that determines the internalFormat and type automatically.
void texImage2D (int target,
int level,
int internalformat,
Bitmap bitmap,
int border)
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.
void texImage2D (int target,
int level,
int internalformat,
Bitmap bitmap,
int type,
int border)
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.
void texSubImage2D (int target,
int level,
int xoffset,
int yoffset,
Bitmap bitmap,
int format,
int type)
A version of texSubImage2D() that takes an explicit type parameter as defined by the OpenGL ES specification.
| Parameters | |
|---|---|
format |
int
|
void texSubImage2D (int target,
int level,
int xoffset,
int yoffset,
Bitmap bitmap)
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.