Initialises all textures
'''
BUFFER_LEVEL = self._bufferLevel
BUFFER_RESOLUTION = self._length
self._levels = list()
# Creates a new textures group
tex = (c_uint * (BUFFER_LEVEL + 1))(0)
glGenTextures(BUFFER_LEVEL + 1, tex)
tex[0] = self._inputID
# Make lower-resolution texture images
for i in range(0,BUFFER_LEVEL+1):
# Set up level object
size = int(BUFFER_RESOLUTION / math.pow(2,i))
# (Note: Don't reduce the last, 1x1 texture...)
if i < BUFFER_LEVEL:
self._levels.append(ReductionLevel(tex[i],size,tex[i+1],self._quadList))
if i > 0:
# Set up texture
glBindTexture(GL_TEXTURE_2D, tex[i])
# Set texture parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
# Define texture with floating point format
glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA32F,size, size,0,GL_RGBA,GL_FLOAT,0)
if __name__=="__main__":
import Visualisation
Visualisation.GadgetTest()
