diff --git a/internal/graphics/opengl/context.go b/internal/graphics/opengl/context.go
index 35f9887d9..47be0dafd 100644
--- a/internal/graphics/opengl/context.go
+++ b/internal/graphics/opengl/context.go
@@ -257,13 +257,9 @@ func (c *Context) GetAttribLocation(p Program, location string) AttribLocation {
 	return a
 }
 
-func (c *Context) VertexAttribPointer(p Program, location string, signed bool, normalize bool, stride int, size int, v int) {
+func (c *Context) VertexAttribPointer(p Program, location string, normalize bool, stride int, size int, v int) {
 	l := GetAttribLocation(c, p, location)
-	t := gl.SHORT
-	if !signed {
-		t = gl.UNSIGNED_SHORT
-	}
-	gl.VertexAttribPointer(uint32(l), int32(size), uint32(t), normalize, int32(stride), gl.PtrOffset(v))
+	gl.VertexAttribPointer(uint32(l), int32(size), gl.SHORT, normalize, int32(stride), gl.PtrOffset(v))
 }
 
 func (c *Context) EnableVertexAttribArray(p Program, location string) {
diff --git a/internal/graphics/opengl/context_js.go b/internal/graphics/opengl/context_js.go
index dc8c7c48b..1a5c72ee7 100644
--- a/internal/graphics/opengl/context_js.go
+++ b/internal/graphics/opengl/context_js.go
@@ -319,14 +319,10 @@ func (c *Context) GetAttribLocation(p Program, location string) AttribLocation {
 	return AttribLocation(gl.GetAttribLocation(p.Object, location))
 }
 
-func (c *Context) VertexAttribPointer(p Program, location string, signed bool, normalize bool, stride int, size int, v int) {
+func (c *Context) VertexAttribPointer(p Program, location string, normalize bool, stride int, size int, v int) {
 	gl := c.gl
 	l := GetAttribLocation(c, p, location)
-	t := gl.SHORT
-	if !signed {
-		t = gl.UNSIGNED_SHORT
-	}
-	gl.VertexAttribPointer(int(l), size, t, normalize, stride, v)
+	gl.VertexAttribPointer(int(l), size, gl.SHORT, normalize, stride, v)
 }
 
 func (c *Context) EnableVertexAttribArray(p Program, location string) {
diff --git a/internal/graphics/program.go b/internal/graphics/program.go
index 3993d4ff4..7a4f88243 100644
--- a/internal/graphics/program.go
+++ b/internal/graphics/program.go
@@ -181,8 +181,8 @@ func (p *programContext) begin() {
 	c.EnableVertexAttribArray(p.program, "vertex")
 	c.EnableVertexAttribArray(p.program, "tex_coord")
 
-	c.VertexAttribPointer(p.program, "vertex", true, false, int16Size*4, 2, int16Size*0)
-	c.VertexAttribPointer(p.program, "tex_coord", true, true, int16Size*4, 2, int16Size*2)
+	c.VertexAttribPointer(p.program, "vertex", false, int16Size*4, 2, int16Size*0)
+	c.VertexAttribPointer(p.program, "tex_coord", true, int16Size*4, 2, int16Size*2)
 }
 
 func (p *programContext) end() {