4 files changed, 8 insertions, 0 deletions
diff --git a/src/static_blend.frag b/src/static_blend.frag
index 5ac9ac4..669558d 100644
--- a/src/static_blend.frag
+++ b/src/static_blend.frag
@@ -29,6 +29,8 @@
  * A basic fragment shader which applies a 2D texture.
  */
 
+precision mediump float;
+
 uniform sampler2D texture;
 uniform vec3 fgcolor;
 uniform vec3 bgcolor;
diff --git a/src/static_blit.frag b/src/static_blit.frag
index 7f0de9b..8b36d9e 100644
--- a/src/static_blit.frag
+++ b/src/static_blit.frag
@@ -29,6 +29,8 @@
  * A basic fragment shader which applies a 2D texture.
  */
 
+precision mediump float;
+
 uniform sampler2D texture;
 varying vec2 texpos;
 
diff --git a/src/static_fill.frag b/src/static_fill.frag
index 00f08ee..9241ce0 100644
--- a/src/static_fill.frag
+++ b/src/static_fill.frag
@@ -29,6 +29,8 @@
  * A basic fragment shader which applies a color directly.
  */
 
+precision mediump float;
+
 varying vec4 col;
 
 void main()
diff --git a/src/static_gltex.frag b/src/static_gltex.frag
index 49b8948..7804011 100644
--- a/src/static_gltex.frag
+++ b/src/static_gltex.frag
@@ -30,6 +30,8 @@
  * background colors.
  */
 
+precision mediump float;
+
 uniform sampler2D atlas;
 uniform float advance_htex;
 uniform float advance_vtex;