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@@ -325,9 +325,20 @@ class CommonFilters:
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text += " decay *= k_vlparams.y;\n"
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text += " }\n"
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text += " o_color += float4(vlcolor * k_vlparams.z, 1);\n"
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+
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+ if ("GammaAdjust" in configuration):
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+ gamma = configuration["GammaAdjust"]
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+ if gamma == 0.5:
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+ text += " o_color.rgb = sqrt(o_color.rgb);\n"
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+ elif gamma == 2.0:
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+ text += " o_color.rgb *= o_color.rgb;\n"
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+ elif gamma != 1.0:
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+ text += " o_color.rgb = pow(o_color.rgb, %ff);\n" % (gamma)
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+
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if ("Inverted" in configuration):
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text += " o_color = float4(1, 1, 1, 1) - o_color;\n"
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text += "}\n"
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+ print text
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self.finalQuad.setShader(Shader.make(text))
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for tex in self.textures:
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@@ -513,3 +524,17 @@ class CommonFilters:
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return self.reconfigure(True, "AmbientOcclusion")
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return True
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+ def setGammaAdjust(self, gamma):
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+ """ Applies additional gamma correction to the image. 1.0 = no correction. """
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+ old_gamma = self.configuration.get("GammaAdjust", 1.0)
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+ if old_gamma != gamma:
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+ self.configuration["GammaAdjust"] = gamma
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+ return self.reconfigure(True, "GammaAdjust")
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+ return True
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+
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+ def delGammaAdjust(self):
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+ if ("GammaAdjust" in self.configuration):
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+ old_gamma = self.configuration["GammaAdjust"]
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+ del self.configuration["GammaAdjust"]
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+ return self.reconfigure((old_gamma != 1.0), "GammaAdjust")
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+ return True
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rdb