def reload_shaders(self):
print("Reloading shaders..")
self.prog_eep = self.ctx.program([
self.ctx.vertex_shader(load_shader("exitpoints.vert")),
self.ctx.fragment_shader(load_shader("exitpoints.frag")),
])
self.prog_rc = self.ctx.program([
self.ctx.vertex_shader(load_shader("raycasting.vert")),
self.ctx.fragment_shader(load_shader("raycasting.frag")),
])
# re-attach vertex array objects
vbo_attributes = [
'VerPos',
]
vbo_format = ModernGL.detect_format(self.prog_eep, vbo_attributes)
self.vao_eep = self.ctx.vertex_array(
self.prog_eep, [(self.vbo_vertex, vbo_format, vbo_attributes)],
self.vbo_veridx)
vbo_format = ModernGL.detect_format(self.prog_rc, vbo_attributes)
self.vao_rc = self.ctx.vertex_array(
self.prog_rc, [(self.vbo_vertex, vbo_format, vbo_attributes)],
self.vbo_veridx)
# update handles for the uniforms
self.unf_screensize = self.prog_rc.uniforms["ScreenSize"]
self.unf_stepsize = self.prog_rc.uniforms["StepSize"]
self.unf_transferfunc = self.prog_rc.uniforms["TransferFunc"]
self.unf_exitpoints = self.prog_rc.uniforms["ExitPoints"]
self.unf_volumetex = self.prog_rc.uniforms["VolumeTex"]
def test_arrays(self):
vert_src = '''
#version %(version)s
in %(type)s v_in[];
out %(type)s v_out[];
void main() {
v_out[0] = v_in[0] * 2;
v_out[1] = v_in[1] * 2;
}
'''
for vtype in vtypes:
try:
prog = self.ctx.program(
self.ctx.vertex_shader(vert_src % vtype), ['v_out'])
except ModernGL.Error:
# skip when version 410 not supported
continue
fmt = ModernGL.detect_format(prog, ['v_in'])
vbo1 = self.ctx.buffer(struct.pack(fmt, *(vtype['input'] * 2)))
vbo2 = self.ctx.buffer(b'\xAA' * struct.calcsize(fmt))
vao = self.ctx.simple_vertex_array(prog, vbo1, ['v_in'])
vao.transform(vbo2, ModernGL.POINTS, 1)
for a, b in zip(struct.unpack(fmt, vbo2.read()),
vtype['output'] * 2):
self.assertAlmostEqual(a, b)
def test_arrays(self):
vert_src = '''
#version %(version)s
in %(type)s v_in[];
out %(type)s v_out[];
void main() {
v_out[0] = v_in[0] + v_in[0];
v_out[1] = v_in[1] + v_in[1];
}
'''
for vtype in vtypes:
if self.ctx.version_code < vtype['version']:
warnings.warn('skipping version %s' % vtype['version'])
continue
prog = self.ctx.program(self.ctx.vertex_shader(vert_src % vtype),
['v_out'])
if 'v_in' not in prog.attributes:
warnings.warn('skipping %s' % vtype['type'])
continue
fmt = ModernGL.detect_format(prog, ['v_in'])
vbo1 = self.ctx.buffer(struct.pack(fmt, *(vtype['input'] * 2)))
vbo2 = self.ctx.buffer(b'\xAA' * struct.calcsize(fmt))
vao = self.ctx.simple_vertex_array(prog, vbo1, ['v_in'])
vao.transform(vbo2, ModernGL.POINTS, 1)
for a, b in zip(struct.unpack(fmt, vbo2.read()),
vtype['output'] * 2):
self.assertAlmostEqual(a, b)