Updated open-simplex to have const noise functions

"open-simplex-noise-in-c" now updated to master and "opensimplex" module refactored accordingly

2 files changed, 13 insertions, 13 deletions

diff --git a/thirdparty/misc/open-simplex-noise.c b/thirdparty/misc/open-simplex-noise.c
index 88fbd3e51d..44a072cad1 100644
--- a/thirdparty/misc/open-simplex-noise.c
+++ b/thirdparty/misc/open-simplex-noise.c
@@ -100,27 +100,27 @@ static const signed char gradients4D[] = {
 	-3, -1, -1, -1,     -1, -3, -1, -1,     -1, -1, -3, -1,     -1, -1, -1, -3,
 };
 
-static double extrapolate2(struct osn_context *ctx, int xsb, int ysb, double dx, double dy)
+static double extrapolate2(const struct osn_context *ctx, int xsb, int ysb, double dx, double dy)
 {
-	int16_t *perm = ctx->perm;	
+	const int16_t *perm = ctx->perm;
 	int index = perm[(perm[xsb & 0xFF] + ysb) & 0xFF] & 0x0E;
 	return gradients2D[index] * dx
 		+ gradients2D[index + 1] * dy;
 }
 	
-static double extrapolate3(struct osn_context *ctx, int xsb, int ysb, int zsb, double dx, double dy, double dz)
+static double extrapolate3(const struct osn_context *ctx, int xsb, int ysb, int zsb, double dx, double dy, double dz)
 {
-	int16_t *perm = ctx->perm;	
-	int16_t *permGradIndex3D = ctx->permGradIndex3D;
+	const int16_t *perm = ctx->perm;
+	const int16_t *permGradIndex3D = ctx->permGradIndex3D;
 	int index = permGradIndex3D[(perm[(perm[xsb & 0xFF] + ysb) & 0xFF] + zsb) & 0xFF];
 	return gradients3D[index] * dx
 		+ gradients3D[index + 1] * dy
 		+ gradients3D[index + 2] * dz;
 }
 	
-static double extrapolate4(struct osn_context *ctx, int xsb, int ysb, int zsb, int wsb, double dx, double dy, double dz, double dw)
+static double extrapolate4(const struct osn_context *ctx, int xsb, int ysb, int zsb, int wsb, double dx, double dy, double dz, double dw)
 {
-	int16_t *perm = ctx->perm;
+	const int16_t *perm = ctx->perm;
 	int index = perm[(perm[(perm[(perm[xsb & 0xFF] + ysb) & 0xFF] + zsb) & 0xFF] + wsb) & 0xFF] & 0xFC;
 	return gradients4D[index] * dx
 		+ gradients4D[index + 1] * dy
@@ -227,7 +227,7 @@ void open_simplex_noise_free(struct osn_context *ctx)
 // -- GODOT end --
 	
 /* 2D OpenSimplex (Simplectic) Noise. */
-double open_simplex_noise2(struct osn_context *ctx, double x, double y) 
+double open_simplex_noise2(const struct osn_context *ctx, double x, double y)
 {
 	
 	/* Place input coordinates onto grid. */
@@ -355,7 +355,7 @@ double open_simplex_noise2(struct osn_context *ctx, double x, double y)
 /*
  * 3D OpenSimplex (Simplectic) Noise
  */
-double open_simplex_noise3(struct osn_context *ctx, double x, double y, double z)
+double open_simplex_noise3(const struct osn_context *ctx, double x, double y, double z)
 {
 
 	/* Place input coordinates on simplectic honeycomb. */
@@ -928,7 +928,7 @@ double open_simplex_noise3(struct osn_context *ctx, double x, double y, double z
 /* 
  * 4D OpenSimplex (Simplectic) Noise.
  */
-double open_simplex_noise4(struct osn_context *ctx, double x, double y, double z, double w)
+double open_simplex_noise4(const struct osn_context *ctx, double x, double y, double z, double w)
 {
 	double uins;
 	double dx1, dy1, dz1, dw1;
diff --git a/thirdparty/misc/open-simplex-noise.h b/thirdparty/misc/open-simplex-noise.h
index 89e0df8218..fd9248c3a1 100644
--- a/thirdparty/misc/open-simplex-noise.h
+++ b/thirdparty/misc/open-simplex-noise.h
@@ -47,9 +47,9 @@ int open_simplex_noise(int64_t seed, struct osn_context *ctx);
 //int open_simplex_noise_init_perm(struct osn_context *ctx, int16_t p[], int nelements);
 // -- GODOT end --
 void open_simplex_noise_free(struct osn_context *ctx);
-double open_simplex_noise2(struct osn_context *ctx, double x, double y);
-double open_simplex_noise3(struct osn_context *ctx, double x, double y, double z);
-double open_simplex_noise4(struct osn_context *ctx, double x, double y, double z, double w);
+double open_simplex_noise2(const struct osn_context *ctx, double x, double y);
+double open_simplex_noise3(const struct osn_context *ctx, double x, double y, double z);
+double open_simplex_noise4(const struct osn_context *ctx, double x, double y, double z, double w);
 
 #ifdef __cplusplus
 	}