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ui/app/internal/gpu: drop opaque texture optimization

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It doesn't seem worth the trouble: images must be scanned for
alpha != 1 and GPUs don't like RGB formats. Use RGBA always.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-05-04 15:43:22 +02:00
parent 871ae34be5
commit fd9eb029c8
1 changed files with 12 additions and 36 deletions
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ui/app/internal/gpu/gpu.go
+12 -36
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@@ -118,9 +118,8 @@ type resource interface {
}
type texture struct {
src image.Image
opaque bool
id gl.Texture
src image.Image
id gl.Texture
}
type blitter struct {
@@ -319,7 +318,7 @@ func (r *renderer) texHandle(t *texture) gl.Texture {
}
t.id = createTexture(r.ctx)
r.ctx.BindTexture(gl.TEXTURE_2D, t.id)
r.uploadTexture(t.src, t.opaque)
r.uploadTexture(t.src)
return t.id
}
@@ -764,9 +763,6 @@ func materialFor(cache *resourceCache, op gdraw.OpImage, off f32.Point, clip ima
t := &texture{
src: op.Src,
}
if img, ok := op.Src.(interface{ Opaque() bool }); ok {
t.opaque = img.Opaque()
}
cache.put(op.Src, t)
tex = t
}
@@ -847,7 +843,7 @@ func (r *renderer) drawOps(ops []imageOp) {
r.ctx.Disable(gl.DEPTH_TEST)
}
func (r *renderer) uploadTexture(img image.Image, opaque bool) {
func (r *renderer) uploadTexture(img image.Image) {
var pixels []byte
b := img.Bounds()
w, h := b.Dx(), b.Dy()
@@ -863,35 +859,15 @@ func (r *renderer) uploadTexture(img image.Image, opaque bool) {
default:
pixels = copyImage(img, b).Pix
}
if opaque {
rgb := make([]uint8, w*h*3)
for i := 0; i < w*h; i++ {
rgb[i*3+0] = pixels[i*4+0]
rgb[i*3+1] = pixels[i*4+1]
rgb[i*3+2] = pixels[i*4+2]
}
r.ctx.PixelStorei(gl.UNPACK_ALIGNMENT, 1)
var internal int
var format gl.Enum
switch r.ctx.caps.srgbMode {
case srgbES3:
internal, format = gl.SRGB8, gl.RGB
case srgbEXT:
internal, format = gl.SRGB, gl.SRGB
}
r.ctx.TexImage2D(gl.TEXTURE_2D, 0, internal, w, h, format, gl.UNSIGNED_BYTE, rgb)
r.ctx.PixelStorei(gl.UNPACK_ALIGNMENT, 4)
} else {
var internal int
var format gl.Enum
switch r.ctx.caps.srgbMode {
case srgbES3:
internal, format = gl.SRGB8_ALPHA8, gl.RGBA
case srgbEXT:
internal, format = gl.SRGB_ALPHA_EXT, gl.SRGB_ALPHA_EXT
}
r.ctx.TexImage2D(gl.TEXTURE_2D, 0, internal, w, h, format, gl.UNSIGNED_BYTE, pixels)
var internal int
var format gl.Enum
switch r.ctx.caps.srgbMode {
case srgbES3:
internal, format = gl.SRGB8_ALPHA8, gl.RGBA
case srgbEXT:
internal, format = gl.SRGB_ALPHA_EXT, gl.SRGB_ALPHA_EXT
}
r.ctx.TexImage2D(gl.TEXTURE_2D, 0, internal, w, h, format, gl.UNSIGNED_BYTE, pixels)
}