diff --git a/src/ao/shader/ao_compose.frag b/src/ao/shader/ao_compose.frag
index 28f4b04c..b5d0f343 100644
--- a/src/ao/shader/ao_compose.frag
+++ b/src/ao/shader/ao_compose.frag
@@ -1,5 +1,5 @@
 uniform sampler2D inputTexture;
-uniform sampler2D depthTexture;
+uniform highp sampler2D depthTexture;
 uniform float power;
 uniform vec3 color;
 
diff --git a/src/hbao/shader/hbao.frag b/src/hbao/shader/hbao.frag
index 35a5f068..0a8f7cf8 100644
--- a/src/hbao/shader/hbao.frag
+++ b/src/hbao/shader/hbao.frag
@@ -1,6 +1,6 @@
 varying vec2 vUv;
 
-uniform sampler2D depthTexture;
+uniform highp sampler2D depthTexture;
 
 uniform mat4 projectionViewMatrix;
 uniform int frame;
diff --git a/src/poissionDenoise/shader/poissionDenoise.frag b/src/poissionDenoise/shader/poissionDenoise.frag
index 8d5c6508..954cf377 100644
--- a/src/poissionDenoise/shader/poissionDenoise.frag
+++ b/src/poissionDenoise/shader/poissionDenoise.frag
@@ -1,7 +1,7 @@
 varying vec2 vUv;
 
 uniform sampler2D inputTexture;
-uniform sampler2D depthTexture;
+uniform highp sampler2D depthTexture;
 uniform sampler2D normalTexture;
 uniform mat4 projectionMatrixInverse;
 uniform mat4 cameraMatrixWorld;
diff --git a/src/ssao/shader/ssao.frag b/src/ssao/shader/ssao.frag
index 5103cf09..271f458c 100644
--- a/src/ssao/shader/ssao.frag
+++ b/src/ssao/shader/ssao.frag
@@ -1,6 +1,6 @@
 varying vec2 vUv;
 
-uniform sampler2D depthTexture;
+uniform highp sampler2D depthTexture;
 uniform sampler2D normalTexture;
 uniform mat4 projectionViewMatrix;
 uniform mat4 cameraMatrixWorld;