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'''OpenGL extension OES.get_program_binary
This module customises the behaviour of the
OpenGL.raw.GLES2.OES.get_program_binary to provide a more
Python-friendly API
Overview (from the spec)
This extension introduces two new commands. GetProgramBinaryOES empowers an
application to use the GL itself as an offline compiler. The resulting
program binary can be reloaded into the GL via ProgramBinaryOES. This is a
very useful path for applications that wish to remain portable by shipping
pure GLSL source shaders, yet would like to avoid the cost of compiling
their shaders at runtime. Instead an application can supply its GLSL source
shaders during first application run, or even during installation. The
application then compiles and links its shaders and reads back the program
binaries. On subsequent runs, only the program binaries need be supplied!
Though the level of optimization may not be identical -- the offline shader
compiler may have the luxury of more aggressive optimization at its
disposal -- program binaries generated online by the GL are interchangeable
with those generated offline by an SDK tool.
Note that an implementation supporting this extension need not include an
online compiler. That is, it is not required to support loading GLSL shader
sources via the ShaderSource command. A query of boolean value
SHADER_COMPILER can be used to determine if an implementation supports a
shader compiler. If not, the GetProgramBinaryOES command is rendered
virtually useless, but the ProgramBinaryOES command may still be used by
vendor extensions as a standard method for loading offline-compiled program
binaries.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/OES/get_program_binary.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GLES2 import _types, _glgets
from OpenGL.raw.GLES2.OES.get_program_binary import *
from OpenGL.raw.GLES2.OES.get_program_binary import _EXTENSION_NAME
def glInitGetProgramBinaryOES():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
# INPUT glGetProgramBinaryOES.binary size not checked against bufSize
glGetProgramBinaryOES=wrapper.wrapper(glGetProgramBinaryOES).setInputArraySize(
'binary', None
).setInputArraySize(
'binaryFormat', 1
).setInputArraySize(
'length', 1
)
# INPUT glProgramBinaryOES.binary size not checked against length
glProgramBinaryOES=wrapper.wrapper(glProgramBinaryOES).setInputArraySize(
'binary', None
)
### END AUTOGENERATED SECTION
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