Python pygame.OPENGL Examples

def todo_test_gl_set_attribute(self):

        # __doc__ (as of 2008-08-02) for pygame.display.gl_set_attribute:

          # pygame.display.gl_set_attribute(flag, value): return None
          # request an opengl display attribute for the display mode
          #
          # When calling pygame.display.set_mode() with the pygame.OPENGL flag,
          # Pygame automatically handles setting the OpenGL attributes like
          # color and doublebuffering. OpenGL offers several other attributes
          # you may want control over. Pass one of these attributes as the flag,
          # and its appropriate value. This must be called before
          # pygame.display.set_mode()
          #
          # The OPENGL flags are;
          #   GL_ALPHA_SIZE, GL_DEPTH_SIZE, GL_STENCIL_SIZE, GL_ACCUM_RED_SIZE,
          #   GL_ACCUM_GREEN_SIZE,  GL_ACCUM_BLUE_SIZE, GL_ACCUM_ALPHA_SIZE,
          #   GL_MULTISAMPLEBUFFERS, GL_MULTISAMPLESAMPLES, GL_STEREO

        self.fail() 

def todo_test_flip(self):

        # __doc__ (as of 2008-08-02) for pygame.display.flip:

          # pygame.display.flip(): return None
          # update the full display Surface to the screen
          #
          # This will update the contents of the entire display. If your display
          # mode is using the flags pygame.HWSURFACE and pygame.DOUBLEBUF, this
          # will wait for a vertical retrace and swap the surfaces. If you are
          # using a different type of display mode, it will simply update the
          # entire contents of the surface.
          #
          # When using an pygame.OPENGL display mode this will perform a gl buffer swap.

        self.fail() 

def todo_test_flip(self):

        # __doc__ (as of 2008-08-02) for pygame.display.flip:

          # pygame.display.flip(): return None
          # update the full display Surface to the screen
          #
          # This will update the contents of the entire display. If your display
          # mode is using the flags pygame.HWSURFACE and pygame.DOUBLEBUF, this
          # will wait for a vertical retrace and swap the surfaces. If you are
          # using a different type of display mode, it will simply update the
          # entire contents of the surface.
          #
          # When using an pygame.OPENGL display mode this will perform a gl buffer swap.

        self.fail() 

def todo_test_flip(self):

        # __doc__ (as of 2008-08-02) for pygame.display.flip:

          # pygame.display.flip(): return None
          # update the full display Surface to the screen
          #
          # This will update the contents of the entire display. If your display
          # mode is using the flags pygame.HWSURFACE and pygame.DOUBLEBUF, this
          # will wait for a vertical retrace and swap the surfaces. If you are
          # using a different type of display mode, it will simply update the
          # entire contents of the surface.
          #
          # When using an pygame.OPENGL display mode this will perform a gl buffer swap.

        self.fail() 

def main_pygame():
    pygame.init()
    size = 800, 600
    pygame.display.set_mode(size, pygame.DOUBLEBUF | pygame.OPENGL)
    io = imgui.get_io()
    io.fonts.add_font_default()
    io.display_size = size
    renderer = PygameRenderer()
    while 1:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            renderer.process_event(event)
        imgui.new_frame()
        on_frame()
        # note: cannot use screen.fill((1, 1, 1)) because pygame's screen
        #       does not support fill() on OpenGL sufraces
        gl.glClearColor(1, 1, 1, 1)
        gl.glClear(gl.GL_COLOR_BUFFER_BIT)
        imgui.render()
        pygame.display.flip() 

def todo_test_gl_set_attribute(self):

        # __doc__ (as of 2008-08-02) for pygame.display.gl_set_attribute:

          # pygame.display.gl_set_attribute(flag, value): return None
          # request an opengl display attribute for the display mode
          #
          # When calling pygame.display.set_mode() with the pygame.OPENGL flag,
          # Pygame automatically handles setting the OpenGL attributes like
          # color and doublebuffering. OpenGL offers several other attributes
          # you may want control over. Pass one of these attributes as the flag,
          # and its appropriate value. This must be called before
          # pygame.display.set_mode()
          #
          # The OPENGL flags are;
          #   GL_ALPHA_SIZE, GL_DEPTH_SIZE, GL_STENCIL_SIZE, GL_ACCUM_RED_SIZE,
          #   GL_ACCUM_GREEN_SIZE,  GL_ACCUM_BLUE_SIZE, GL_ACCUM_ALPHA_SIZE,
          #   GL_MULTISAMPLEBUFFERS, GL_MULTISAMPLESAMPLES, GL_STEREO

        self.fail() 

def todo_test_gl_get_attribute(self):

        # __doc__ (as of 2008-08-02) for pygame.display.gl_get_attribute:

          # pygame.display.gl_get_attribute(flag): return value
          # get the value for an opengl flag for the current display
          #
          # After calling pygame.display.set_mode() with the pygame.OPENGL flag,
          # it is a good idea to check the value of any requested OpenGL
          # attributes. See pygame.display.gl_set_attribute() for a list of
          # valid flags.
          #

        self.fail() 

def todo_test_gl_get_attribute(self):

        # __doc__ (as of 2008-08-02) for pygame.display.gl_get_attribute:

          # pygame.display.gl_get_attribute(flag): return value
          # get the value for an opengl flag for the current display
          #
          # After calling pygame.display.set_mode() with the pygame.OPENGL flag,
          # it is a good idea to check the value of any requested OpenGL
          # attributes. See pygame.display.gl_set_attribute() for a list of
          # valid flags.
          #

        self.fail() 

def todo_test_flip(self):

        # __doc__ (as of 2008-08-02) for pygame.display.flip:

          # pygame.display.flip(): return None
          # update the full display Surface to the screen
          #
          # This will update the contents of the entire display. If your display
          # mode is using the flags pygame.HWSURFACE and pygame.DOUBLEBUF, this
          # will wait for a vertical retrace and swap the surfaces. If you are
          # using a different type of display mode, it will simply update the
          # entire contents of the surface.
          #
          # When using an pygame.OPENGL display mode this will perform a gl buffer swap.

        self.fail() 

def todo_test_gl_get_attribute(self):

        # __doc__ (as of 2008-08-02) for pygame.display.gl_get_attribute:

          # pygame.display.gl_get_attribute(flag): return value
          # get the value for an opengl flag for the current display
          #
          # After calling pygame.display.set_mode() with the pygame.OPENGL flag,
          # it is a good idea to check the value of any requested OpenGL
          # attributes. See pygame.display.gl_set_attribute() for a list of
          # valid flags.
          #

        self.fail() 

def todo_test_gl_get_attribute(self):

        # __doc__ (as of 2008-08-02) for pygame.display.gl_get_attribute:

          # pygame.display.gl_get_attribute(flag): return value
          # get the value for an opengl flag for the current display
          #
          # After calling pygame.display.set_mode() with the pygame.OPENGL flag,
          # it is a good idea to check the value of any requested OpenGL
          # attributes. See pygame.display.gl_set_attribute() for a list of
          # valid flags.
          #

        self.fail() 

def displayMode():
        return pygame.OPENGL | pygame.RESIZABLE | pygame.DOUBLEBUF 

def __init__(self, **kwargs):
        super().__init__(**kwargs)

        pygame.display.init()

        pygame.display.gl_set_attribute(pygame.GL_CONTEXT_MAJOR_VERSION, self.gl_version[0])
        pygame.display.gl_set_attribute(pygame.GL_CONTEXT_MINOR_VERSION, self.gl_version[1])
        pygame.display.gl_set_attribute(pygame.GL_CONTEXT_PROFILE_MASK, pygame.GL_CONTEXT_PROFILE_CORE)
        pygame.display.gl_set_attribute(pygame.GL_CONTEXT_FORWARD_COMPATIBLE_FLAG, 1)
        pygame.display.gl_set_attribute(pygame.GL_DOUBLEBUFFER, 1)
        pygame.display.gl_set_attribute(pygame.GL_DEPTH_SIZE, 24)

        if self.samples > 1:
            pygame.display.gl_set_attribute(pygame.GL_MULTISAMPLEBUFFERS, 1)
            pygame.display.gl_set_attribute(pygame.GL_MULTISAMPLESAMPLES, self.samples)

        self._depth = 24
        self._flags = pygame.OPENGL | pygame.DOUBLEBUF
        if self.fullscreen:
            self._flags |= pygame.FULLSCREEN

            info = pygame.display.Info()
            desktop_size = info.current_w, info.current_h
            self._width, self._height = desktop_size
            self._buffer_width, self._buffer_height = self._width, self._height
        else:
            if self.resizable:
                self._flags |= pygame.RESIZABLE

        self._set_mode()
        self.title = self._title
        self.cursor = self._cursor
        self.init_mgl_context()
        self.set_default_viewport() 

def setWindowSize(self, width, height):
        self.screenSize = (width, height)
        self.displayFlags = pygame.DOUBLEBUF | pygame.OPENGL | pygame.RESIZABLE
        self.screen = pygame.display.set_mode( self.screenSize, self.displayFlags )
        
    # implement by extending class 

def _make_context(self, width, height):
        """Create the ModernGL context."""
        glconfig = {
            'GL_CONTEXT_MAJOR_VERSION': 4,
            'GL_CONTEXT_PROFILE_MASK': pygame.GL_CONTEXT_PROFILE_CORE,
        }

        for k, v in glconfig.items():
            k = getattr(pygame, k)
            pygame.display.gl_set_attribute(k, v)

        dims = width, height
        flags = pygame.OPENGL | pygame.DOUBLEBUF

        if self.fullscreen:
            # SDL's detection for "legacy" fullscreen seems to fail on
            # Ubuntu 16.04 at least. Set an environment variable so that it
            # asks the Window Manager for full screen mode instead.
            # https://github.com/spurious/SDL-mirror/blob/c8b01e282dfd49ea8bbf1faec7fd65d869ea547f/src/video/x11/SDL_x11window.c#L1468
            os.environ['SDL_VIDEO_X11_LEGACY_FULLSCREEN'] = "0"

            flags |= pygame.FULLSCREEN
            if not self._scaler:
                self._scaler = 'linear'
            dims = 0, 0
        elif self._scaler:
            flags |= pygame.SCALED

        pygame.display.set_mode(
            dims,
            flags=flags,
            depth=24
        )
        ctx = moderngl.create_context(require=410)

        self._real_size = pygame.display.get_window_size()
        if self._real_size != (width, height):
            self.drawer = self._make_scaler(ctx, (width, height))
        return ctx 

def display_cube():
    WINDOW_WIDTH = 800
    WINDOW_HEIGHT = 600

    pygame.init()
    pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT), pygame.DOUBLEBUF | pygame.OPENGL)
    
    OpenGL.GLU.gluPerspective(45, (WINDOW_WIDTH/WINDOW_HEIGHT), 0.1, 50.0)
    OpenGL.GL.glTranslatef(0.0, 0.0, -10)
    
    show_cube_1 = True
    show_cube_2 = True
    show_lines = True
    
    running = True
    while running:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_ESCAPE:
                    running = False
                elif event.key == pygame.K_1:
                    show_cube_1 = not show_cube_1
                elif event.key == pygame.K_2:
                    show_cube_2 = not show_cube_2
                elif event.key == pygame.K_0:
                    show_lines = not show_lines
                    
                    
        OpenGL.GL.glRotate(1, 3, 10, 10) # (angle,x,y,z)
        OpenGL.GL.glClear(OpenGL.GL.GL_COLOR_BUFFER_BIT | OpenGL.GL.GL_DEPTH_BUFFER_BIT)

        if show_cube_1:
            cube(vertices1, edges) # large cube
        if show_cube_2:
            cube(vertices2, edges) # small cube
        if show_lines:
            lines(vertices1, vertices2)
        
        pygame.display.flip()
        pygame.time.wait(10)

    pygame.quit()

# --- 

def displayMode():
        return pygame.OPENGL | pygame.RESIZABLE | pygame.DOUBLEBUF 

def main():
    pygame.init()
    size = 800, 600

    pygame.display.set_mode(size, pygame.DOUBLEBUF | pygame.OPENGL | pygame.RESIZABLE)

    imgui.create_context()
    impl = PygameRenderer()

    io = imgui.get_io()
    io.display_size = size

    while 1:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()

            impl.process_event(event)

        imgui.new_frame()

        if imgui.begin_main_menu_bar():
            if imgui.begin_menu("File", True):

                clicked_quit, selected_quit = imgui.menu_item(
                    "Quit", 'Cmd+Q', False, True
                )

                if clicked_quit:
                    exit(1)

                imgui.end_menu()
            imgui.end_main_menu_bar()

        imgui.show_test_window()

        imgui.begin("Custom window", True)
        imgui.text("Bar")
        imgui.text_colored("Eggs", 0.2, 1., 0.)
        imgui.end()

        # note: cannot use screen.fill((1, 1, 1)) because pygame's screen
        #       does not support fill() on OpenGL sufraces
        gl.glClearColor(1, 1, 1, 1)
        gl.glClear(gl.GL_COLOR_BUFFER_BIT)
        imgui.render()
        impl.render(imgui.get_draw_data())

        pygame.display.flip()