))
#########################
# Copy of framebuffer #
#########################
# setup Texture instance for proper size and scaling, etc.
framebuffer_copy_texture = Texture(texels=screen.get_framebuffer_as_image(
format=gl.GL_RGBA))
try:
framebuffer_copy = TextureStimulus(
texture=framebuffer_copy_texture,
internal_format=gl.GL_RGBA,
mipmaps_enabled=False,
size=(width, height),
texture_min_filter=gl.GL_LINEAR,
position=(x3, y1),
anchor='center',
shrink_texture_ok=False, # settting to True causes massive slowdowns
)
framebuffer_copy_works = True
except Exception, x:
warning_stimuli.append(
Text(
text="Framebuffer copy",
position=(x3, y1),
anchor='center',
color=warning_color,
font_size=warning_font_size,
))
framebuffer_copy_works = False
VisionEgg.start_default_logging()
VisionEgg.watch_exceptions()
from VisionEgg.Core import get_default_screen, Viewport, gl
from VisionEgg.FlowControl import Presentation
from VisionEgg.Text import Text
from VisionEgg.Textures import Texture, TextureStimulus
screen = get_default_screen()
screen.parameters.bgcolor = (0.0, 0.0, 1.0) # background blue (RGB)
orig_text = Text(
text="Hello world!",
color=(1.0, 1.0, 1.0),
font_size=50,
)
arr = orig_text.parameters.texture.get_texels_as_array() # get numpy array
arr = arr[::-1] # flip upside down
flipped_text = TextureStimulus(
texture=Texture(arr),
position=(screen.size[0] / 2, screen.size[1] / 2),
anchor='center',
internal_format=gl.GL_RGBA,
mipmaps_enabled=False,
)
viewport = Viewport(screen=screen, size=screen.size, stimuli=[flipped_text])
p = Presentation(go_duration=(5.0, 'seconds'), viewports=[viewport])
p.go()
