Dear Yuichi,
Although I've never done stereo (and the Vision Egg does not do it,
either), it looks to me like the critical commands in the demo you
reference are:
* glDrawBuffer(GL_BACK_LEFT) (and the equivalent for the right buffer)
and
* glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH |
GLUT_STEREO)
The demo looks like it would straightforward to convert to a straing
PyOpenGL program.
In terms of the Vision Egg, you'd have to modify the
Core.Screen.__init__() function by inserting a
pygame.display.gl_set_attribute(pygame.locals.GL_STEREO) function
call. Then, of course, your program would have to draw the
framebuffers for both views. I suggest something like the following,
which is completely untested code I just made up, but should set you
on the right track:
center = (0,0,0)
left_eye = (-1,0,-10)
right_eye = (1, 0,-10)
up = (0,1,0)
left_projection = Projection().look_at( left_eye, center, up )
right_projection = Projection().look_at( right_eye, center, up )
left_viewport =
Viewport(projection=left_projection,stimuli=your_stimuli_here)
right_viewport =
Viewport(projection=right_projection,stimuli=your_stimuli_here)
while 1:
glDrawBuffer(GL_BACK_LEFT)
screen.clear()
left_viewport.draw()
glDrawBuffer(GL_BACK_RIGHT)
screen.clear()
right_viewport.draw()
swap_buffers()
(Note this doesn't use VisionEgg.FlowControl)
Yuichi Sakano wrote:
Hi.
Is anyone using stereo (with shutter goggles) with PyOpenGL (or
VisionEgg)? I'm trying to using it, but I have no idea how to use it.
If you have succeeded in it, would you let me know how (if possible,
send the script) please?
I'm using Mac G4 (OS10.2.8, 866MHz-dual processors) and ATI RADEON
graphics board.
I can use stereo with C and OpenGL using a sample code.
http://developer.apple.com/samplecode/GLUTStereo/GLUTStereo.html
Thanks for any help.
Yuichi
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