diff --git a/engine/gl/gl_shader.c b/engine/gl/gl_shader.c
index e3523dc09..ee4f6f717 100644
--- a/engine/gl/gl_shader.c
+++ b/engine/gl/gl_shader.c
@@ -2050,10 +2050,10 @@ static qboolean Shader_LoadPermutations(char *name, program_t *prog, char *scrip
 		nopermutation |= PERMUTATION_SKELETAL;
 
 	//multiple lightmaps is kinda hacky. if any are set, all must be.
-#define ALTLIGHTMAPSAMP 14
+#define ALTLIGHTMAPSAMP 16
 	if (prog->defaulttextures & ((1u<<(ALTLIGHTMAPSAMP+0)) | (1u<<(ALTLIGHTMAPSAMP+1)) | (1u<<(ALTLIGHTMAPSAMP+2))))
 		prog->defaulttextures |=((1u<<(ALTLIGHTMAPSAMP+0)) | (1u<<(ALTLIGHTMAPSAMP+1)) | (1u<<(ALTLIGHTMAPSAMP+2)));
-#define ALTDELUXMAPSAMP 17
+#define ALTDELUXMAPSAMP 19
 	if (prog->defaulttextures & ((1u<<(ALTDELUXMAPSAMP+0)) | (1u<<(ALTDELUXMAPSAMP+1)) | (1u<<(ALTDELUXMAPSAMP+2))))
 		prog->defaulttextures |=((1u<<(ALTDELUXMAPSAMP+0)) | (1u<<(ALTDELUXMAPSAMP+1)) | (1u<<(ALTDELUXMAPSAMP+2)));
 
diff --git a/engine/gl/gl_vidcommon.c b/engine/gl/gl_vidcommon.c
index 7a0b53103..2d88e620f 100644
--- a/engine/gl/gl_vidcommon.c
+++ b/engine/gl/gl_vidcommon.c
@@ -2432,6 +2432,8 @@ static GLuint GLSlang_CreateShader (program_t *prog, const char *name, int ver,
 				"uniform sampler2D s_reflectmask;\n",
 				"uniform sampler2D s_displacement;\n",
 				"uniform sampler2D s_occlusion;\n",
+				"uniform sampler2D s_transmission;\n",
+				"uniform sampler2D s_thickness;\n",
 				"uniform sampler2D s_lightmap;\n#define s_lightmap0 s_lightmap\n",
 				"uniform sampler2D s_deluxemap;\n#define s_deluxemap0 s_deluxemap\n",