| (EGL 1.1 only) Defines a two-dimensional texture image.
The texture image consists of the image data in
buffer for the specified surface, and
need not be copied.
The texture target, the texture format and the size of the
texture components are derived from attributes of the specified
surface, which must be a pbuffer supporting one of the
EGL_BIND_TO_TEXTURE_RGB or
EGL_BIND_TO_TEXTURE_RGBA attributes.
The pbuffer attribute EGL_TEXTURE_FORMAT
determines the base internal format of the texture.
The texture target is derived from the
EGL_TEXTURE_TARGET attribute of
surface. If the attribute value is
EGL_TEXTURE_2D, then buffer defines a texture for
the two-dimensional texture object which is bound to the current
context (hereafter referred to as the current texture object).
If display and surface are the
display and surface for the calling thread’s current context,
eglBindTexImage performs an implicit
glFlush. For other surfaces,
eglBindTexImage waits for all effects from
previously issued OpenGL ES commands drawing to the surface to
complete before defining the texture image, as though
glFinish were called on the last context to which
that surface were bound.
After eglBindTexImage is called, the specified
surface is no longer available for reading or writing. Any read
operation, such as glReadPixels or
eglCopyBuffers, which reads values from any of the
surface’s color buffers or ancillary buffers will produce
indeterminate results. In addition, draw operations that are done
to the surface before its color buffer is released from the
texture produce indeterminate results. Specifically, if the
surface is current to a context and thread then rendering
commands will be processed and the context state will be updated,
but the surface may or may not be written.
Texture mipmap levels are automatically generated when all of
the following conditions are met while calling
eglBindTexImage:
The EGL_MIPMAP_TEXTURE attribute of the pbuffer
being bound is EGL_TRUE.
The OpenGL ES texture parameter
GL_GENERATE_MIPMAP is GL_TRUE for the
currently bound texture.
The value of the EGL_MIPMAP_LEVEL attribute of
the pbuffer being bound is equal to the value of the texture
parameter GL_TEXTURE_BASE_LEVEL. In this case,
additional mipmap levels are generated as described in section
3.8 of the OpenGL ES 1.1 Specification.
Notes
eglSwapBuffers has no effect if it is called on
a bound surface.
Any existing images associated with the different mipmap
levels of the texture object are freed (it is as if
glTexImage was called with an image of zero width).
The color buffer is bound to a texture object. If the texture
object is shared between contexts, then the color buffer is also
shared. If a texture object is deleted before
eglReleaseTexImage is called, then the color buffer
is released and the surface is made available for reading and
writing.
It is not an error to call glTexImage2D or
glCopyTexImage2D to replace an image of a texture
object that has a color buffer bound to it. However, these calls
will cause the color buffer to be released back to the surface
and new memory will be allocated for the texture. Note that the
color buffer is released even if the image that is being defined
is a mipmap level that was not defined by the color buffer.
eglBindTexImage is ignored if there is no
current rendering context.
Errors
EGL_BAD_MATCH is generated if the surface
attribute EGL_TEXTURE_FORMAT is set to
EGL_NO_TEXTURE.
EGL_BAD_ACCESS is generated if
buffer is already bound to a texture.
EGL_BAD_VALUE is generated if
buffer is not a valid buffer (currently only
EGL_BACK_BUFFER may be specified).
EGL_BAD_SURFACE is generated if surface is not
an EGL surface, or is not a pbuffer surface supporting texture
binding.
Parameters:
display - Specifies the EGL display connection.
Parameters:
surface - Specifies the EGL surface.
Parameters:
buffer - Specifies the texture image data. true if the operation succeeds.
exception:
IllegalArgumentException - if display isnull.
exception:
IllegalArgumentException - if surface isnull.
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