Python pyglet.gl.glViewport() Examples

def on_draw(self):
        gl.glClearColor(0, 0, 0, 0)
        self.clear()
        gl.glViewport(0, 0, self.width, self.height)
        now = time.clock() - self._start_time
        now *= self._speed
        with self.bufferA:
            with self.shaderA:
                self.shaderA.uniformf("iTime", now)
                self.shaderA.uniformi("iFrame", self._frame_count)
                gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)

        with self.bufferB:
            with self.shaderB:
                self.shaderB.uniformf("iTime", now)
                gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)

        with self.shaderC:
            self.shaderC.uniformf("iTime", now)
            gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)

        self._frame_count += 1 

def on_draw(self):
        gl.glClearColor(0, 0, 0, 0)
        self.clear()
        gl.glViewport(0, 0, self.width, self.height)
        self._last = self._now
        self._now = time.clock()
        itime = self._now - self._start_time
        idate = get_idate()
        delta = self._now - self._last
        with self.bufferA:
            with self.shaderA:
                self.shaderA.uniformf("iTime", itime)
                self.shaderA.uniformf("iDate", *idate)
                self.shaderA.uniformf("iTimeDelta", delta)
                gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)

        with self.shaderB:
            self.shaderB.uniformf("iTime", itime)
            self.shaderB.uniformf("iDate", *idate)
            self.shaderB.uniformf("iTimeDelta", delta)
            gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)

        self._frame_count += 1 

def on_resize(self, width, height):
        '''A default resize event handler.

        This default handler updates the GL viewport to cover the entire
        window and sets the ``GL_PROJECTION`` matrix to be orthogonal in
        window space.  The bottom-left corner is (0, 0) and the top-right
        corner is the width and height of the window in pixels.

        Override this event handler with your own to create another
        projection, for example in perspective.
        '''
        gl.glViewport(0, 0, width, height)
        gl.glMatrixMode(gl.GL_PROJECTION)
        gl.glLoadIdentity()
        gl.glOrtho(0, width, 0, height, -1, 1)
        gl.glMatrixMode(gl.GL_MODELVIEW) 

def on_resize(self, width, height):
        '''A default resize event handler.

        This default handler updates the GL viewport to cover the entire
        window and sets the ``GL_PROJECTION`` matrix to be orthogonal in
        window space.  The bottom-left corner is (0, 0) and the top-right
        corner is the width and height of the window in pixels.

        Override this event handler with your own to create another
        projection, for example in perspective.
        '''
        gl.glViewport(0, 0, width, height)
        gl.glMatrixMode(gl.GL_PROJECTION)
        gl.glLoadIdentity()
        gl.glOrtho(0, width, 0, height, -1, 1)
        gl.glMatrixMode(gl.GL_MODELVIEW) 

def on_resize(self, width, height):
        '''A default resize event handler.

        This default handler updates the GL viewport to cover the entire
        window and sets the ``GL_PROJECTION`` matrix to be orthogonal in
        window space.  The bottom-left corner is (0, 0) and the top-right
        corner is the width and height of the window in pixels.

        Override this event handler with your own to create another
        projection, for example in perspective.
        '''
        gl.glViewport(0, 0, width, height)
        gl.glMatrixMode(gl.GL_PROJECTION)
        gl.glLoadIdentity()
        gl.glOrtho(0, width, 0, height, -1, 1)
        gl.glMatrixMode(gl.GL_MODELVIEW) 

def on_draw(self):
        gl.glClearColor(0, 0, 0, 0)
        self.clear()
        gl.glViewport(0, 0, self.width, self.height)
        with self.shader:
            self.shader.uniformf("iTime", time.clock() - self._start_time)
            gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4) 

def on_draw(self):
        gl.glClearColor(0, 0, 0, 0)
        self.clear()
        gl.glViewport(0, 0, self.width, self.height)
        now = time.clock() - self._start_time
        now *= 20
        with self.shader:
            self.shader.uniformf("iTime", now)
            gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4) 

def on_draw(self):
        gl.glClearColor(0, 0, 0, 0)
        self.clear()
        gl.glViewport(0, 0, self.width, self.height)
        with self.shader:
            self.shader.uniformf("iTime", time.clock() - self._start_time)
            gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)

        if self.video_on and (self.frame_count % self.sample_rate == 0):
            self.write_video_frame()

        self.frame_count += 1 

def on_draw(self):
        gl.glClearColor(0, 0, 0, 0)
        self.clear()
        gl.glViewport(0, 0, self.width, self.height)
        with self.shader:
            self.shader.uniformf("iTime", time.clock() - self._start_time)
            gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4) 

def _setup_2d(self):
        w, h = self.get_size()
        gl.glDisable(gl.GL_DEPTH_TEST)

        viewport = self.get_viewport_size()
        gl.glViewport(0, 0, max(1, viewport[0]), max(1, viewport[1]))

        gl.glMatrixMode(gl.GL_PROJECTION)
        gl.glLoadIdentity()
        gl.glOrtho(0, max(1, w), 0, max(1, h), -1, 1)

        gl.glMatrixMode(gl.GL_MODELVIEW)
        gl.glLoadIdentity() 

def _setup_3d(self):
        w, h = self.get_size()
        gl.glEnable(gl.GL_DEPTH_TEST)
        gl.glDepthFunc(gl.GL_LEQUAL)

        gl.glEnable(gl.GL_DEPTH_TEST)
        gl.glEnable(gl.GL_CULL_FACE)

        viewport = self.get_viewport_size()
        gl.glViewport(0, 0, max(1, viewport[0]), max(1, viewport[1]))

        gl.glMatrixMode(gl.GL_PROJECTION)
        gl.glLoadIdentity()
        gl.gluPerspective(*self.perspective)

        gl.glMatrixMode(gl.GL_MODELVIEW)
        gl.glLoadIdentity()
        y, x = self.rotation
        gl.glRotatef(x, 0, 1, 0)
        gl.glRotatef(-y, math.cos(math.radians(x)),
                     0, math.sin(math.radians(x)))
        # NOTE: for GL render, its x-z plane is the ground plane,
        # so we unpack the position using `(x, z, y)` instead of `(x, y, z)`
        x, z, y = self.position
        if not self.debug_mode:
            y += self.perspective_over_drone[0]
        z += self.perspective_over_drone[1]
        gl.glTranslatef(-x, -y, -z) 

def set_3d(self, size):
        """Configure OpenGL to draw in 3d."""
        width, height = size
        GL.glEnable(GL.GL_DEPTH_TEST)
        GL.glViewport(0, 0, width, height)
        GL.glMatrixMode(GL.GL_PROJECTION)
        GL.glLoadIdentity()
        GL.gluPerspective(65.0, width / float(height), 0.1, 60.0)
        GL.glMatrixMode(GL.GL_MODELVIEW)
        GL.glLoadIdentity()
        x, y = self.player.rotation
        GL.glRotatef(x, 0, 1, 0)
        GL.glRotatef(-y, math.cos(math.radians(x)), 0, math.sin(math.radians(x)))
        x, y, z = self.player.position
        GL.glTranslatef(-x, -y, -z) 

def set_2d(self, size):
        """Configure OpenGL to draw in 2d."""
        width, height = size
        GL.glDisable(GL.GL_DEPTH_TEST)
        GL.glViewport(0, 0, width, height)
        GL.glMatrixMode(GL.GL_PROJECTION)
        GL.glLoadIdentity()
        GL.glOrtho(0, width, 0, height, -1, 1)
        GL.glMatrixMode(GL.GL_MODELVIEW)
        GL.glLoadIdentity() 

def set(self, window_width, window_height, framebuffer_width, framebuffer_height):
        width = max(1, window_width)
        height = max(1, window_height)

        gl.glViewport(0, 0, framebuffer_width, framebuffer_height)

        with pyglet.graphics.get_default_shader().uniform_buffers['WindowBlock'] as window_block:
            window_block.projection[:] = matrix.create_orthogonal(0, width, 0, height, -255, 255)
            if not self._view:
                # Set view to Identity Matrix
                self._view = matrix.Mat4()
                window_block.view[:] = self._view 

def set(self, window_width, window_height, framebuffer_width, framebuffer_height):
        width = max(1, window_width)
        height = max(1, window_height)

        gl.glViewport(0, 0, framebuffer_width, framebuffer_height)

        with pyglet.graphics.get_default_shader().uniform_buffers['WindowBlock'] as window_block:
            window_block.projection[:] = matrix.create_perspective(0, width, 0, height, self.znear, self.zfar, self.fov)
            if not self._view:
                # Set view to Identity Matrix
                self._view = matrix.Mat4()
                window_block.view[:] = self._view 

def get_framebuffer_size(self):
        """Return the size in actual pixels of the Window framebuffer.

        When using HiDPI screens, the size of the Window's framebuffer
        can be higher than that of the Window size requested. If you
        are performing operations that require knowing the actual number
        of pixels in the window, this method should be used instead of
        :py:func:`Window.get_size()`. For example, setting the Window
        projection or setting the glViewport size.

        :rtype: (int, int)
        :return: The width and height of the Window viewport, in pixels.
        """
        return self.get_size()