all: apply suggestions from staticcheck.io

Signed-off-by: Elias Naur <mail@eliasnaur.com>

gpu/compute.go

@@ -265,7 +265,6 @@ type clipState struct {
 	path      []byte
 	pathKey   ops.Key
 	intersect f32.Rectangle
-	push      bool
 
 	clipKey
 }
@@ -308,11 +307,6 @@ type encoder struct {
 	ntrans   int
 }
 
-type encodeState struct {
-	trans f32.Affine2D
-	clip  f32.Rectangle
-}
-
 // sizedBuffer holds a GPU buffer, or its equivalent CPU memory.
 type sizedBuffer struct {
 	size   int
@@ -1612,13 +1606,6 @@ func (e *encoder) numElements() int {
 	return len(e.scene)
 }
 
-func (e *encoder) append(e2 encoder) {
-	e.scene = append(e.scene, e2.scene...)
-	e.npath += e2.npath
-	e.npathseg += e2.npathseg
-	e.ntrans += e2.ntrans
-}
-
 func (e *encoder) transform(m f32.Affine2D) {
 	e.scene = append(e.scene, scene.Transform(m))
 	e.ntrans++
@@ -1666,11 +1653,6 @@ func (e *encoder) line(start, end f32.Point) {
 	e.npathseg++
 }
 
-func (e *encoder) quad(start, ctrl, end f32.Point) {
-	e.scene = append(e.scene, scene.Quad(start, ctrl, end))
-	e.npathseg++
-}
-
 func (c *collector) reset() {
 	c.prevFrame, c.frame = c.frame, c.prevFrame
 	c.profile = false

gpu/internal/opengl/opengl.go

@@ -49,7 +49,6 @@ type Backend struct {
 type glState struct {
 	drawFBO     gl.Framebuffer
 	readFBO     gl.Framebuffer
-	renderBuf   gl.Renderbuffer
 	vertAttribs [5]struct {
 		obj        gl.Buffer
 		enabled    bool
@@ -154,11 +153,6 @@ type uniformLocation struct {
 	size    int
 }
 
-type inputLayout struct {
-	inputs []shader.InputLocation
-	layout []driver.InputDesc
-}
-
 // textureTriple holds the type settings for
 // a TexImage2D call.
 type textureTriple struct {
@@ -426,13 +420,6 @@ func (s *glState) activeTexture(f *gl.Functions, unit gl.Enum) {
 	}
 }
 
-func (s *glState) bindRenderbuffer(f *gl.Functions, target gl.Enum, r gl.Renderbuffer) {
-	if !r.Equal(s.renderBuf) {
-		f.BindRenderbuffer(gl.RENDERBUFFER, r)
-		s.renderBuf = r
-	}
-}
-
 func (s *glState) bindTexture(f *gl.Functions, unit int, t gl.Texture) {
 	s.activeTexture(f, gl.TEXTURE0+gl.Enum(unit))
 	if !t.Equal(s.texUnits.binds[unit]) {
@@ -448,13 +435,6 @@ func (s *glState) bindVertexArray(f *gl.Functions, a gl.VertexArray) {
 	}
 }
 
-func (s *glState) deleteRenderbuffer(f *gl.Functions, r gl.Renderbuffer) {
-	f.DeleteRenderbuffer(r)
-	if r.Equal(s.renderBuf) {
-		s.renderBuf = gl.Renderbuffer{}
-	}
-}
-
 func (s *glState) deleteFramebuffer(f *gl.Functions, fbo gl.Framebuffer) {
 	f.DeleteFramebuffer(fbo)
 	if fbo.Equal(s.drawFBO) {

gpu/path.go

@@ -58,7 +58,6 @@ type coverUniforms struct {
 	uvCoverTransform [4]float32
 	uvTransformR1    [4]float32
 	uvTransformR2    [4]float32
-	z                float32
 }
 
 type stenciler struct {
@@ -239,6 +238,9 @@ func newStenciler(ctx driver.Device) *stenciler {
 		Topology:    driver.TopologyTriangleStrip,
 	})
 	st.ipipeline.pipeline = &pipeline{ipipe, vertUniforms}
+	if err != nil {
+		panic(err)
+	}
 	return st
 }