net.irisshaders.iris.gl.shader.ShaderCompileException: composite3.fsh: composite3.fsh: 0(235) : error C1503: undefined variable "calculateMovement"
0(237) : error C1503: undefined variable "getFireflyNoise"
at net.irisshaders.iris.gl.shader.GlShader.createShader(GlShader.java:46)
at net.irisshaders.iris.gl.shader.GlShader.<init>(GlShader.java:25)
at net.irisshaders.iris.gl.program.ProgramBuilder.buildShader(ProgramBuilder.java:88)
at net.irisshaders.iris.gl.program.ProgramBuilder.begin(ProgramBuilder.java:49)
at net.irisshaders.iris.pipeline.CompositeRenderer.createProgram(CompositeRenderer.java:326)
at net.irisshaders.iris.pipeline.CompositeRenderer.<init>(CompositeRenderer.java:123)
at net.irisshaders.iris.pipeline.IrisRenderingPipeline.<init>(IrisRenderingPipeline.java:322)
at net.irisshaders.iris.Iris.createPipeline(Iris.java:578)
at net.irisshaders.iris.pipeline.PipelineManager.preparePipeline(PipelineManager.java:33)
at net.irisshaders.iris.Iris.reload(Iris.java:529)
at net.irisshaders.iris.Iris.handleKeybinds(Iris.java:144)
at net.minecraft.class_310.handler$bgo002$iris$onTick(class_310.java:11173)
at net.minecraft.class_310.method_1574(class_310.java:2012)
at net.minecraft.class_310.method_1523(class_310.java:1246)
at net.minecraft.class_310.method_1514(class_310.java:882)
at net.minecraft.client.main.Main.main(Main.java:256)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
This shader fails to load into Iris 1.7.3+mc1.21