diff --git a/kitty/blit_vertex.glsl b/kitty/blit_vertex.glsl
index fa585f9e2..7899a7043 100644
--- a/kitty/blit_vertex.glsl
+++ b/kitty/blit_vertex.glsl
@@ -1,30 +1,20 @@
 #version GLSL_VERSION
-#define vleft  -1.0f
-#define vtop  1.0f
-#define vright  1.0f
-#define vbottom  -1.0f
+#define left  -1.0f
+#define top  1.0f
+#define right  1.0f
+#define bottom  -1.0f
 
-#define tleft 0.0f
-#define ttop 1.0f
-#define tright 1.0f
-#define tbottom 0.0f
-
-const vec2 viewport_xpos = vec2(vleft, vright);
-const vec2 viewport_ypos = vec2(vtop, vbottom);
-const vec2 texture_xpos = vec2(tleft, tright);
-const vec2 texture_ypos = vec2(ttop, tbottom);
-
-const uvec2 pos_map[] = uvec2[4](
-    uvec2(1, 0),  // right, top
-    uvec2(1, 1),  // right, bottom
-    uvec2(0, 1),  // left, bottom
-    uvec2(0, 0)   // left, top
+const vec2 pos_map[] = vec2[4](
+    vec2(right, top),  
+    vec2(right, bottom),  
+    vec2(left, bottom),  
+    vec2(left, top)   
 );
 
 out vec2 texcoord;
 
 void main() {
-    uvec2 pos = pos_map[gl_VertexID];
-    gl_Position = vec4(viewport_xpos[pos[0]], viewport_ypos[pos[1]], 0, 1);
-    texcoord = vec2(texture_xpos[pos[0]], texture_ypos[pos[1]]);
+    vec2 vertex = pos_map[gl_VertexID];
+    gl_Position = vec4(vertex, 0, 1);
+    texcoord = (vertex + 1.0) / 2.0;
 }