def glShaderSource(shader, source):
source_lines = source.splitlines()
count = len(source_lines)
strings = ffi.new('char*[]', count)
lengths = ffi.new('int[]', count)
ref_strings = []
for i, line in enumerate(source_lines):
cb = line.encode('ascii')
s = ffi.new('char[]', cb)
ref_strings.append(s)
strings[i] = s
lengths[i] = len(cb)
lib.glShaderSource(shader, count, strings, lengths)
def glGenBuffers(n):
buffers = ffi.new('unsigned int[]', n)
lib.glGenBuffers(n, buffers)
return buffers
def glGetUniformLocation(program, name):
cname = ffi.new('char*', name)
return lib.glGetUniformLocation(program, cname)
def glGetAttribLocation(program, name):
cname = ffi.new('char[]', name.encode('ascii'))
return lib.glGetAttribLocation(program, cname)
def glGetProgramInfoLog(program):
max_length = 1024
length = ffi.new('int*')
infolog = ffi.new('char[]', max_length)
lib.glGetProgramInfoLog(program, max_length, length, infolog)
return infolog
def glGetProgramiv(program, pname):
params = ffi.new('int*')
lib.glGetProgramiv(program, pname, params)
return params[0]
def glGetShaderInfoLog(shader):
max_length = 2048
length = ffi.new('int*')
infolog = ffi.new('char[]', max_length)
lib.glGetShaderInfoLog(shader, max_length, length, infolog)
return ffi.string(infolog).decode('utf-8')
def glGetShaderiv(shader, pname):
params = ffi.new('int*')
lib.glGetShaderiv(shader, pname, params)
return params[0]