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internal/mipmap: refactoring

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This commit is contained in:
Hajime Hoshi 2024-08-11 22:33:21 +09:00
parent e6807794f2
commit 9a751d7c26
1 changed files with 4 additions and 8 deletions
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12
internal/mipmap/mipmap.go
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@ -111,11 +111,10 @@ func (m *Mipmap) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Mipmap, verti
} }
if level != 0 { if level != 0 {
if img := src.level(level); img != nil { if img := src.level(level); img != nil {
const n = graphics.VertexFloatCount
s := float32(pow2(level)) s := float32(pow2(level))
for i := 0; i < len(vertices)/n; i++ { for i := 0; i < len(vertices); i += graphics.VertexFloatCount {
vertices[i*n+2] /= s vertices[i+2] /= s
vertices[i*n+3] /= s vertices[i+3] /= s
} }
imgs[i] = img imgs[i] = img
continue continue
@ -150,12 +149,10 @@ func (m *Mipmap) level(level int) *buffered.Image {
var src *buffered.Image var src *buffered.Image
vs := make([]float32, 4*graphics.VertexFloatCount) vs := make([]float32, 4*graphics.VertexFloatCount)
shader := atlas.NearestFilterShader
switch { switch {
case level == 1: case level == 1:
src = m.orig src = m.orig
graphics.QuadVertices(vs, 0, 0, float32(m.width), float32(m.height), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1) graphics.QuadVertices(vs, 0, 0, float32(m.width), float32(m.height), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
shader = atlas.LinearFilterShader
case level > 1: case level > 1:
src = m.level(level - 1) src = m.level(level - 1)
if src == nil { if src == nil {
@ -165,7 +162,6 @@ func (m *Mipmap) level(level int) *buffered.Image {
w := sizeForLevel(m.width, level-1) w := sizeForLevel(m.width, level-1)
h := sizeForLevel(m.height, level-1) h := sizeForLevel(m.height, level-1)
graphics.QuadVertices(vs, 0, 0, float32(w), float32(h), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1) graphics.QuadVertices(vs, 0, 0, float32(w), float32(h), 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
shader = atlas.LinearFilterShader
default: default:
panic(fmt.Sprintf("mipmap: invalid level: %d", level)) panic(fmt.Sprintf("mipmap: invalid level: %d", level))
} }
@ -188,7 +184,7 @@ func (m *Mipmap) level(level int) *buffered.Image {
s := buffered.NewImage(w2, h2, m.imageType) s := buffered.NewImage(w2, h2, m.imageType)
dstRegion := image.Rect(0, 0, w2, h2) dstRegion := image.Rect(0, 0, w2, h2)
s.DrawTriangles([graphics.ShaderSrcImageCount]*buffered.Image{src}, vs, is, graphicsdriver.BlendCopy, dstRegion, [graphics.ShaderSrcImageCount]image.Rectangle{}, shader, nil, graphicsdriver.FillRuleFillAll) s.DrawTriangles([graphics.ShaderSrcImageCount]*buffered.Image{src}, vs, is, graphicsdriver.BlendCopy, dstRegion, [graphics.ShaderSrcImageCount]image.Rectangle{}, atlas.LinearFilterShader, nil, graphicsdriver.FillRuleFillAll)
m.setImg(level, s) m.setImg(level, s)
return m.imgs[level] return m.imgs[level]