Updated all the libs, added citro3d, added ctr.swkbd (WIP, untested)

libs/citro3d/include/c3d/lightlut.h

@@ -0,0 +1,29 @@
+#pragma once
+#include "types.h"
+#include <math.h>
+
+typedef struct
+{
+	u32 data[256];
+} C3D_LightLut;
+
+typedef struct
+{
+	C3D_LightLut lut;
+	float bias, scale;
+} C3D_LightLutDA;
+
+typedef float (* C3D_LightLutFunc)(float x, float param);
+typedef float (* C3D_LightLutFuncDA)(float dist, float arg0, float arg1);
+
+static inline float quadratic_dist_attn(float dist, float linear, float quad)
+{
+	return 1.0f / (1.0f + linear*dist + quad*dist*dist);
+}
+
+void LightLut_FromArray(C3D_LightLut* lut, float* data);
+void LightLut_FromFunc(C3D_LightLut* lut, C3D_LightLutFunc func, float param, bool negative);
+void LightLutDA_Create(C3D_LightLutDA* lut, C3D_LightLutFuncDA func, float from, float to, float arg0, float arg1);
+
+#define LightLut_Phong(lut, shininess) LightLut_FromFunc((lut), powf, (shininess), false)
+#define LightLutDA_Quadratic(lut, from, to, linear, quad) LightLutDA_Create((lut), quadratic_dist_attn, (from), (to), (linear), (quad))