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graphics: Refactoring: no needed returning values

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This commit is contained in:
Hajime Hoshi 2017-05-30 02:55:09 +09:00
parent d220e300ab
commit 9d4849e351
1 changed files with 6 additions and 14 deletions
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20
graphicscontext.go
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@ -120,26 +120,19 @@ func (c *graphicsContext) initializeIfNeeded(context *opengl.Context) error {
return nil
}
func drawWithFittingScale(dst *Image, src *Image) error {
func drawWithFittingScale(dst *Image, src *Image) {
wd, hd := dst.Size()
ws, hs := src.Size()
sw := float64(wd) / float64(ws)
sh := float64(hd) / float64(hs)
op := &DrawImageOptions{}
op.GeoM.Scale(sw, sh)
if err := dst.DrawImage(src, op); err != nil {
return err
}
return nil
_ = dst.DrawImage(src, op)
}
func (c *graphicsContext) drawToDefaultRenderTarget(context *opengl.Context) error {
if err := c.screen.Clear(); err != nil {
return err
}
if err := drawWithFittingScale(c.screen, c.offscreen2); err != nil {
return err
}
_ = c.screen.Clear()
drawWithFittingScale(c.screen, c.offscreen2)
if err := graphics.FlushCommands(context); err != nil {
return err
}
@ -150,6 +143,7 @@ func (c *graphicsContext) UpdateAndDraw(context *opengl.Context, updateCount int
if err := c.initializeIfNeeded(context); err != nil {
return err
}
// TODO: Is it OK to restore images here? The images can be in 'stale' state after c.f().
if err := restorable.ResolveStalePixels(context); err != nil {
return err
}
@ -161,9 +155,7 @@ func (c *graphicsContext) UpdateAndDraw(context *opengl.Context, updateCount int
}
}
if 0 < updateCount {
if err := drawWithFittingScale(c.offscreen2, c.offscreen); err != nil {
return err
}
drawWithFittingScale(c.offscreen2, c.offscreen)
}
if err := c.drawToDefaultRenderTarget(context); err != nil {
return err