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gpu: implement automatic mipmaps for images

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All GPU APIs except OpenGL ES 2 can generate mipmaps for textures.
This trades 33% more GPU memory use for improved rendering quality
and speed for downscaled images.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2022-10-22 11:04:22 -06:00
parent e69ef4f0b4
commit bebc73db37
19 changed files with 233 additions and 38 deletions
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gpu/gpu.go
+1 -1
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@@ -436,7 +436,7 @@ func (r *renderer) texHandle(cache *resourceCache, data imageOpData) driver.Text
if tex.tex != nil {
return tex.tex
}
handle, err := r.ctx.NewTexture(driver.TextureFormatSRGBA, data.src.Bounds().Dx(), data.src.Bounds().Dy(), driver.FilterLinear, driver.FilterLinear, driver.BufferBindingTexture)
handle, err := r.ctx.NewTexture(driver.TextureFormatSRGBA, data.src.Bounds().Dx(), data.src.Bounds().Dy(), driver.FilterLinearMipmapLinear, driver.FilterLinear, driver.BufferBindingTexture)
if err != nil {
panic(err)
}