removed the alpha tex clear

tfriedel6 · Mar 21, 2020 · 7830bb2 · 7830bb2
1 parent 1b94cf0
commit 7830bb2
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/backend/goglbackend/fill.go b/backend/goglbackend/fill.go
@@ -175,6 +175,12 @@ func (b *GoGLBackend) FillImageMask(style *backendbase.FillStyle, mask *image.Al
  off := y * mask.Stride
  gl.TexSubImage2D(gl.TEXTURE_2D, 0, 0, int32(alphaTexSize-1-y), int32(w), 1, gl.ALPHA, gl.UNSIGNED_BYTE, gl.Ptr(&mask.Pix[off]))
  }
+ if h < alphaTexSize {
+ gl.TexSubImage2D(gl.TEXTURE_2D, 0, 0, int32(alphaTexSize-1-h), int32(w), 1, gl.ALPHA, gl.UNSIGNED_BYTE, gl.Ptr(&zeroes[0]))
+ }
+ if w < alphaTexSize {
+ gl.TexSubImage2D(gl.TEXTURE_2D, 0, int32(w), int32(alphaTexSize-1-h), 1, int32(h), gl.ALPHA, gl.UNSIGNED_BYTE, gl.Ptr(&zeroes[0]))
+ }
 
  if style.Blur > 0 {
  b.offscr1.alpha = true
@@ -215,10 +221,6 @@ func (b *GoGLBackend) FillImageMask(style *backendbase.FillStyle, mask *image.Al
 
  gl.StencilFunc(gl.ALWAYS, 0, 0xFF)
 
- for y := 0; y < h; y++ {
- gl.TexSubImage2D(gl.TEXTURE_2D, 0, 0, int32(alphaTexSize-1-y), int32(w), 1, gl.ALPHA, gl.UNSIGNED_BYTE, gl.Ptr(&zeroes[0]))
- }
-
  gl.ActiveTexture(gl.TEXTURE0)
 
  if style.Blur > 0 {