Hi everyone, I'm doing a project using wxPython and pyopengl, and I seem to have a problem rendering textures. This is code that worked before my hard drive had a meltdown, but not since I re-installed everything.
I've determined the problem is in the OpenGL part of my program. I do some calculations to generate a 2D numpy array that holds the image data, and pylab.imshow() shows me the image as it is meant to be. I used the same algorithm in Octave and MATLAB, and all are giving me the right picture. However, using pyOpenGL and the numpyhandler functions (http://cours- info.iut-bm.univ-fcomte.fr/docs/python/OpenGL/ OpenGL.arrays.numpymodule.NumpyHandler-class.html) doesn't seem to work. I get a garbled screen pocked with black pixels. I am including my openGL code below. What am I doing wrong? And yes, I did make the dtype of my array 'float32'. -------code snippets------ import wx from wx.glcanvas import GLCanvas from OpenGL.GLU import * from OpenGL.GL import * from OpenGL.arrays.numpymodule import NumpyHandler PC = 1 RI = 0 class myGLCanvas(GLCanvas): def __init__(self, parent): GLCanvas.__init__(self, parent,-1) wx.EVT_PAINT(self, self.OnPaint) self.init = 0 self.mode = -1 # making a texture for the range image self.texture = glGenTextures(1) # making a spot for the point cloud points self.cloud = None return def OnPaint(self,event): dc = wx.PaintDC(self) self.SetCurrent() if not self.init: self.InitGL() self.init = 1 self.OnDraw() return def OnDraw(self): glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) if self.mode == RI: self.drawRange() elif self.mode == PC: self.drawCloud() def InitGL(self): glClearColor(0.0, 0.0, 0.0, 0.0); glClearDepth(1.0) glEnable(GL_DEPTH_TEST) glDepthFunc(GL_LEQUAL) glClear(GL_COLOR_BUFFER_BIT) glPixelStorei(GL_UNPACK_ALIGNMENT, 1) glPixelStorei(GL_PACK_ALIGNMENT, 1) #NTSC colour scales... glPixelTransferf(GL_RED_SCALE, 0.299); glPixelTransferf(GL_GREEN_SCALE, 0.587); glPixelTransferf(GL_BLUE_SCALE, 0.114); glMatrixMode(GL_PROJECTION) glLoadIdentity() glOrtho(0.0,1.0,0,1.0,-1.0,1.0) glMatrixMode(GL_MODELVIEW) glLoadIdentity() return def rangeImage(self, image): glBindTexture(GL_TEXTURE_2D, self.texture) glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR) glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR) glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT) glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT) # flatten it into a list so the OpenGL calls work n = NumpyHandler() fI = image.flatten() flatImage = n.dataPointer(n.contiguous(fI)) print n.contiguous(fI) gluBuild2DMipmaps(GL_TEXTURE_2D, 1, image.shape[0]+1, image.shape[1]+1, GL_LUMINANCE, GL_FLOAT, flatImage) self.mode = RI self.OnDraw() def drawRange(self): ''' Controls the actual drawing of the range image''' glMatrixMode(GL_MODELVIEW) glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) glColor3f(1.0,1.0,1.0) glEnable(GL_TEXTURE_2D) glBindTexture(GL_TEXTURE_2D, self.texture) glBegin(GL_TRIANGLE_FAN) glTexCoord2d(1,1); glVertex3f(0.0, 0.0, 0.0) glTexCoord2d(1,0); glVertex3f(0.0, 1.0, 0.0) glTexCoord2d(0,0); glVertex3f(1.0, 1.0, 0.0) glTexCoord2d(0,1); glVertex3f(1.0, 0.0, 0.0) glEnd() self.SwapBuffers() --------end snippet----------- -- http://mail.python.org/mailman/listinfo/python-list
