def __compile(self, vertSrc, fragSrc):
"""Called by :meth:`__init__`. Compiles the vertex and fragment
programs and returns references to the compiled programs.
"""
gl.glEnable(arbvp.GL_VERTEX_PROGRAM_ARB)
gl.glEnable(arbfp.GL_FRAGMENT_PROGRAM_ARB)
# Clear out unnecessary stuff from
# the source, and make sure it is
# plain ASCII - not unicode.
vertSrc = self.__cleanSource(vertSrc)
fragSrc = self.__cleanSource(fragSrc)
vertSrc = vertSrc.encode('ascii')
fragSrc = fragSrc.encode('ascii')
fragProg = arbfp.glGenProgramsARB(1)
vertProg = arbvp.glGenProgramsARB(1)
# vertex program
try:
arbvp.glBindProgramARB(arbvp.GL_VERTEX_PROGRAM_ARB, vertProg)
arbvp.glProgramStringARB(arbvp.GL_VERTEX_PROGRAM_ARB,
arbvp.GL_PROGRAM_FORMAT_ASCII_ARB,
len(vertSrc), vertSrc)
except Exception:
position = gl.glGetIntegerv(arbvp.GL_PROGRAM_ERROR_POSITION_ARB)
message = gl.glGetString(arbvp.GL_PROGRAM_ERROR_STRING_ARB)
message = message.decode('ascii')
raise RuntimeError('Error compiling vertex program ({}): '
'{}\n{}'.format(position, message, vertSrc))
# fragment program
try:
arbfp.glBindProgramARB(arbfp.GL_FRAGMENT_PROGRAM_ARB, fragProg)
arbfp.glProgramStringARB(arbfp.GL_FRAGMENT_PROGRAM_ARB,
arbfp.GL_PROGRAM_FORMAT_ASCII_ARB,
len(fragSrc), fragSrc)
except Exception:
position = gl.glGetIntegerv(arbfp.GL_PROGRAM_ERROR_POSITION_ARB)
message = gl.glGetString(arbfp.GL_PROGRAM_ERROR_STRING_ARB)
message = message.decode('ascii')
raise RuntimeError('Error compiling fragment program ({}): '
'{}\n{}'.format(position, message, fragSrc))
gl.glDisable(arbvp.GL_VERTEX_PROGRAM_ARB)
gl.glDisable(arbfp.GL_FRAGMENT_PROGRAM_ARB)
return vertProg, fragProg
f.write(l)
f.write("\n")
if __name__ == "__main__":
from OpenGL import arrays
ctx = OSMesaCreateContext(OSMESA_RGBA, None)
#ctx = OSMesaCreateContextExt(OSMESA_RGBA, 32, 0, 0, None)
width, height = 400, 400
buf = arrays.GLubyteArray.zeros((height, width, 4))
assert(OSMesaMakeCurrent(ctx, buf, GL_UNSIGNED_BYTE, width, height))
assert(OSMesaGetCurrentContext())
program = glGenProgramsARB(1)
assert(program)
z = glGetIntegerv(GL_DEPTH_BITS)
s = glGetIntegerv(GL_STENCIL_BITS)
a = glGetIntegerv(GL_ACCUM_RED_BITS)
print("Depth=%d Stencil=%d Accum=%d" % (z, s, a))
print("Width=%d Height=%d" % (OSMesaGetIntegerv(OSMESA_WIDTH),
OSMesaGetIntegerv(OSMESA_HEIGHT)))
#OSMesaPixelStore(OSMESA_Y_UP, 0)
render_image()
write_ppm(buf, "output.ppm")
f.write(l)
f.write("\n")
if __name__ == '__main__':
from OpenGL import arrays
ctx = OSMesaCreateContext(OSMESA_RGBA, None)
#ctx = OSMesaCreateContextExt(OSMESA_RGBA, 32, 0, 0, None)
width, height = 400, 400
buf = arrays.GLubyteArray.zeros((height, width, 4))
assert(OSMesaMakeCurrent(ctx, buf, GL_UNSIGNED_BYTE, width, height))
assert(OSMesaGetCurrentContext())
program = glGenProgramsARB(1)
assert(program)
z = glGetIntegerv(GL_DEPTH_BITS)
s = glGetIntegerv(GL_STENCIL_BITS)
a = glGetIntegerv(GL_ACCUM_RED_BITS)
print "Depth=%d Stencil=%d Accum=%d" % (z, s, a)
print "Width=%d Height=%d" % (OSMesaGetIntegerv(OSMESA_WIDTH),
OSMesaGetIntegerv(OSMESA_HEIGHT))
#OSMesaPixelStore(OSMESA_Y_UP, 0)
render_image()
write_ppm(buf, 'output.ppm')