def fixGrayscaleTextures(np):
for tex in np.findAllTextures():
if (tex.getFormat() == Texture.F_luminance):
print "Fixing grayscale texture", tex.getName()
img = PNMImage()
tex.store(img)
img.makeRgb()
tex.load(img)
emissive_srgb = bool(int(raw_input("sRGB (Edited in image program)? [1/0]: ")))
size = [1024, 1024]
fImgs = [[ao, ao_srgb], [roughness, roughness_srgb], [metallic, metallic_srgb],
[emissive, emissive_srgb]]
imgs = {}
foundSize = False
for i in range(len(fImgs)):
fImg, is_sRGB = fImgs[i]
if fImg.exists():
img = PNMImage()
img.read(fImg)
img.makeRgb()
if is_sRGB:
# Convert to linear
print("Converting", getChannelName(i), "to linear")
img.applyExponent(2.2)
if not foundSize:
size = [img.getReadXSize(), img.getReadYSize()]
foundSize = True
imgs[i] = img
else:
# assume it is a constant value
val = float(fImg.getFullpath())
if is_sRGB:
print("Converting", getChannelName(i), "to linear")
# Convert to linear
val = math.pow(val, 2.2)
