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internal/mipmap: bug fix: do not consider filter to determine mipmap level

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Now the filter argument is not used (a4e9a05b14),
the filter value can be the nearest filter even though the shader is
for the linear filter.

As long as `canSkipMipmap` is set correctly, we don't have to consider
the parameter `filter`. We should ignore it.

Updates #2364
This commit is contained in:
Hajime Hoshi 2022-10-02 18:43:59 +09:00
parent 4b2a9c3243
commit 42833614fb
1 changed files with 4 additions and 8 deletions
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12
internal/mipmap/mipmap.go
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@ -89,13 +89,13 @@ func (m *Mipmap) DrawTriangles(srcs [graphics.ShaderImageCount]*Mipmap, vertices
dy2 := vertices[n*indices[3*i+2]+1]
sx2 := vertices[n*indices[3*i+2]+2]
sy2 := vertices[n*indices[3*i+2]+3]
if l := mipmapLevelFromDistance(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1, filter); level > l {
if l := mipmapLevelFromDistance(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1); level > l {
level = l
}
if l := mipmapLevelFromDistance(dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, filter); level > l {
if l := mipmapLevelFromDistance(dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2); level > l {
level = l
}
if l := mipmapLevelFromDistance(dx2, dy2, dx0, dy0, sx2, sy2, sx0, sy0, filter); level > l {
if l := mipmapLevelFromDistance(dx2, dy2, dx0, dy0, sx2, sy2, sx0, sy0); level > l {
level = l
}
}
@ -232,7 +232,7 @@ func (m *Mipmap) disposeMipmaps() {
}
// mipmapLevel returns an appropriate mipmap level for the given distance.
func mipmapLevelFromDistance(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1 float32, filter graphicsdriver.Filter) int {
func mipmapLevelFromDistance(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1 float32) int {
const maxLevel = 6
d := (dx1-dx0)*(dx1-dx0) + (dy1-dy0)*(dy1-dy0)
@ -252,10 +252,6 @@ func mipmapLevelFromDistance(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1 float32, fil
return 0
}
if filter != graphicsdriver.FilterLinear {
return 0
}
level := 0
for scale < 0.25 {
level++