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Re: [pygame] Old pygame tutorial not working

On Aug 5, 2008, at 12:24 AM, Ian Mallett wrote:


#World
HeightMapTexture,HeightMapSurface = LoadSurfaceTexture('Data/ Landscapes/'+World+'/HeightMap.png',Surface=True,filter=False) WorldTexture = LoadSurfaceTexture('Data/Landscapes/'+World+'/ Texture.png') 
dlSeaBed = glGenLists(1)
glNewList(dlSeaBed, GL_COMPILE)
glPushMatrix()
glDisable(GL_LIGHTING) #presently no lighting data
glBindTexture(GL_TEXTURE_2D,WorldTexture)
width = HeightMapSurface.get_width()
fwidth = float(width)
height = HeightMapSurface.get_height()
fheight = float(height)

Data = LandscapeData.main(World)
for z in xrange(height-1):
    glBegin(GL_TRIANGLE_STRIP)
    for x in xrange(width):
        glTexCoord2f(x/fwidth,z/fheight)
        glVertex3f(x,Data[z][x],z)
        glTexCoord2f(x/fwidth,(z+1)/fheight)
        glVertex3f(x,Data[z+1][x],z+1)
    glEnd()
glEnable(GL_LIGHTING)
glPopMatrix()
glEndList()
This could be optimized readily using a vertex array (or VBO) instead of immediate mode. In fact, if building the array is prohibitively expensive, it could be readily stored and loaded from disk, effectively allowing you to load the display list by loading the vertex array (since that's basically all that's in there). 

-Casey