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Add gamma adjustment filter

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rdb 2014-10-03 16:58:46 +00:00
parent e7c08ec2fe
commit e5b3d58f77
1 changed files with 25 additions and 0 deletions
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25
direct/src/filter/CommonFilters.py
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@ -325,9 +325,20 @@ class CommonFilters:
text += " decay *= k_vlparams.y;\n"
text += " }\n"
text += " o_color += float4(vlcolor * k_vlparams.z, 1);\n"
if ("GammaAdjust" in configuration):
gamma = configuration["GammaAdjust"]
if gamma == 0.5:
text += " o_color.rgb = sqrt(o_color.rgb);\n"
elif gamma == 2.0:
text += " o_color.rgb *= o_color.rgb;\n"
elif gamma != 1.0:
text += " o_color.rgb = pow(o_color.rgb, %ff);\n" % (gamma)
if ("Inverted" in configuration):
text += " o_color = float4(1, 1, 1, 1) - o_color;\n"
text += "}\n"
print text
self.finalQuad.setShader(Shader.make(text))
for tex in self.textures:
@ -513,3 +524,17 @@ class CommonFilters:
return self.reconfigure(True, "AmbientOcclusion")
return True
def setGammaAdjust(self, gamma):
""" Applies additional gamma correction to the image. 1.0 = no correction. """
old_gamma = self.configuration.get("GammaAdjust", 1.0)
if old_gamma != gamma:
self.configuration["GammaAdjust"] = gamma
return self.reconfigure(True, "GammaAdjust")
return True
def delGammaAdjust(self):
if ("GammaAdjust" in self.configuration):
old_gamma = self.configuration["GammaAdjust"]
del self.configuration["GammaAdjust"]
return self.reconfigure((old_gamma != 1.0), "GammaAdjust")
return True