/usr/share/doc/python-pyglet/examples/fixed_resolution.py is in python-pyglet 1.1.4.dfsg-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | #!/usr/bin/env python
# ----------------------------------------------------------------------------
# pyglet
# Copyright (c) 2006-2008 Alex Holkner
# All rights reserved.
#
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# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
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# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of pyglet nor the names of its
# contributors may be used to endorse or promote products
# derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# ----------------------------------------------------------------------------
# $Id:$
'''Demonstrates one way of fixing the display resolution to a certain
size, but rendering to the full screen.
The method used in this example is:
1. Set the OpenGL viewport to the fixed resolution
2. Render the scene using any OpenGL functions (here, just a polygon)
3. Copy the framebuffer into a texture
4. Reset the OpenGL viewport to the window (full screen) size
5. Blit the texture to the framebuffer
Recent video cards could also render the scene directly to the texture
using EXT_framebuffer_object. (This is not demonstrated in this example).
'''
from pyglet.gl import *
import pyglet
# Create a fullscreen window using the user's desktop resolution. You can
# also use this technique on ordinary resizable windows.
window = pyglet.window.Window(fullscreen=True)
# Use 320x200 fixed resolution to make the effect completely obvious. You
# can change this to a more reasonable value such as 800x600 here.
target_resolution = 320, 200
class FixedResolutionViewport(object):
def __init__(self, window, width, height, filtered=False):
self.window = window
self.width = width
self.height = height
self.texture = pyglet.image.Texture.create(width, height,
rectangle=True)
if not filtered:
# By default the texture will be bilinear filtered when scaled
# up. If requested, turn filtering off. This makes the image
# aliased, but is more suitable for pixel art.
glTexParameteri(self.texture.target,
GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(self.texture.target,
GL_TEXTURE_MIN_FILTER, GL_NEAREST)
def begin(self):
glViewport(0, 0, self.width, self.height)
self.set_fixed_projection()
def end(self):
buffer = pyglet.image.get_buffer_manager().get_color_buffer()
self.texture.blit_into(buffer, 0, 0, 0)
glViewport(0, 0, self.window.width, self.window.height)
self.set_window_projection()
aspect_width = self.window.width / float(self.width)
aspect_height = self.window.height / float(self.height)
if aspect_width > aspect_height:
scale_width = aspect_height * self.width
scale_height = aspect_height * self.height
else:
scale_width = aspect_width * self.width
scale_height = aspect_width * self.height
x = (self.window.width - scale_width) / 2
y = (self.window.height - scale_height) / 2
glClearColor(0, 0, 0, 1)
glClear(GL_COLOR_BUFFER_BIT)
glLoadIdentity()
glColor3f(1, 1, 1)
self.texture.blit(x, y, width=scale_width, height=scale_height)
def set_fixed_projection(self):
# Override this method if you need to change the projection of the
# fixed resolution viewport.
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0, self.width, 0, self.height, -1, 1)
glMatrixMode(GL_MODELVIEW)
def set_window_projection(self):
# This is the same as the default window projection, reprinted here
# for clarity.
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0, self.window.width, 0, self.window.height, -1, 1)
glMatrixMode(GL_MODELVIEW)
target_width, target_height = target_resolution
viewport = FixedResolutionViewport(window,
target_width, target_height, filtered=False)
def draw_scene():
'''Draw the scene, assuming the fixed resolution viewport and projection
have been set up. This just draws the rotated polygon.'''
glClearColor(1, 1, 1, 1)
glClear(GL_COLOR_BUFFER_BIT)
glLoadIdentity()
w, h = target_resolution
glTranslatef(w/2, h/2, 0)
glRotatef(rotate, 0, 0, 1)
glColor3f(1, 0, 0)
s = min(w, h) / 3
glRectf(-s, -s, s, s)
rotate = 0
def update(dt):
global rotate
rotate += dt * 20
pyglet.clock.schedule_interval(update, 1/60.)
@window.event
def on_draw():
viewport.begin()
window.clear()
draw_scene()
viewport.end()
pyglet.app.run()
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