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shareable: Remove (*Image).PutVertex
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Hajime Hoshi
parent
ea52aa52bb
commit
6095cd965b
@ -262,29 +262,22 @@ func (i *Image) Size() (width, height int) {
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return i.width, i.height
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}
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// PutVertices puts the given dst with vertices that can be passed to DrawTriangles.
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func (i *Image) PutVertex(dst []float32, dx, dy, sx, sy float32, bx0, by0, bx1, by1 float32, cr, cg, cb, ca float32) {
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// Specifying a range explicitly here is redundant but this helps optimization
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// to eliminate boundary checks.
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//
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// VertexFloatNum is better than 12 in terms of code maintenanceability, but in GopherJS, optimization
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// might not work.
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vs := dst[0:12]
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vs[0] = dx
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vs[1] = dy
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vs[2] = sx
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vs[3] = sy
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vs[4] = bx0
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vs[5] = by0
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vs[6] = bx1
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vs[7] = by1
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vs[8] = cr
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vs[9] = cg
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vs[10] = cb
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vs[11] = ca
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}
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// DrawTriangles draws triangles with the given image.
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//
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// The vertex floats are:
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//
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// 0: Destination X in pixels
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// 1: Destination Y in pixels
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// 2: Source X in pixels (the upper-left is (0, 0))
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// 3: Source Y in pixels
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// 4: Bounds of the source min X in pixels
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// 5: Bounds of the source min Y in pixels
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// 6: Bounds of the source max X in pixels
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// 7: Bounds of the source max Y in pixels
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// 8: Color R [0.0-1.0]
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// 9: Color G
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// 10: Color B
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// 11: Color Y
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func (i *Image) DrawTriangles(img *Image, vertices []float32, indices []uint16, colorm *affine.ColorM, mode driver.CompositeMode, filter driver.Filter, address driver.Address) {
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backendsM.Lock()
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defer backendsM.Unlock()
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@ -44,6 +44,23 @@ func TestMain(m *testing.M) {
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os.Exit(code)
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}
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func quadVertices(sw, sh, x, y int, scalex float32) []float32 {
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dx0 := float32(x)
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dy0 := float32(y)
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dx1 := float32(x) + float32(sw)*scalex
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dy1 := float32(y) + float32(sh)
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sx0 := float32(0)
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sy0 := float32(0)
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sx1 := float32(sw)
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sy1 := float32(sh)
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return []float32{
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dx0, dy0, sx0, sy0, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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dx1, dy0, sx1, sy0, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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dx0, dy1, sx0, sy1, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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dx1, dy1, sx1, sy1, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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}
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}
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const bigSize = 2049
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func TestEnsureNotShared(t *testing.T) {
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@ -85,8 +102,7 @@ func TestEnsureNotShared(t *testing.T) {
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dy1 = size * 3 / 4
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)
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// img4.ensureNotShared() should be called.
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, img3, 0, 0, size/2, size/2, 1, 0, 0, 1, size/4, size/4, 1, 1, 1, 1)
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vs := quadVertices(size/2, size/2, size/4, size/4, 1)
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is := graphics.QuadIndices()
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img4.DrawTriangles(img3, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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want := false
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@ -150,8 +166,7 @@ func TestReshared(t *testing.T) {
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}
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// Use img1 as a render target.
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, img2, 0, 0, size, size, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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vs := quadVertices(size, size, 0, 0, 1)
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is := graphics.QuadIndices()
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img1.DrawTriangles(img2, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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if got, want := img1.IsSharedForTesting(), false; got != want {
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@ -277,8 +292,7 @@ func TestReplacePixelsAfterDrawTriangles(t *testing.T) {
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}
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src.ReplacePixels(pix)
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, src, 0, 0, w, h, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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vs := quadVertices(w, h, 0, 0, 1)
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is := graphics.QuadIndices()
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dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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dst.ReplacePixels(pix)
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@ -313,8 +327,7 @@ func TestSmallImages(t *testing.T) {
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}
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src.ReplacePixels(pix)
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, src, 0, 0, w, h, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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vs := quadVertices(w, h, 0, 0, 1)
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is := graphics.QuadIndices()
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dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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@ -349,8 +362,7 @@ func TestLongImages(t *testing.T) {
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src.ReplacePixels(pix)
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const scale = 120
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, src, 0, 0, w, h, scale, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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vs := quadVertices(w, h, 0, 0, scale)
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is := graphics.QuadIndices()
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dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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42
mipmap.go
42
mipmap.go
@ -120,8 +120,7 @@ func (m *mipmap) drawImage(src *mipmap, bounds image.Rectangle, geom *GeoM, colo
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a, b, c, d, tx, ty := geom.elements()
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if level == 0 {
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vs := vertexSlice(4)
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graphics.PutQuadVertices(vs, src.orig, bounds.Min.X, bounds.Min.Y, bounds.Max.X, bounds.Max.Y, a, b, c, d, tx, ty, cr, cg, cb, ca)
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vs := quadVertices(bounds.Min.X, bounds.Min.Y, bounds.Max.X, bounds.Max.Y, a, b, c, d, tx, ty, cr, cg, cb, ca)
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is := graphics.QuadIndices()
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m.orig.DrawTriangles(src.orig, vs, is, colorm, mode, filter, driver.AddressClampToZero)
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} else if shared := src.level(bounds, level); shared != nil {
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@ -131,8 +130,7 @@ func (m *mipmap) drawImage(src *mipmap, bounds image.Rectangle, geom *GeoM, colo
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b *= s
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c *= s
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d *= s
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vs := vertexSlice(4)
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graphics.PutQuadVertices(vs, shared, 0, 0, w, h, a, b, c, d, tx, ty, cr, cg, cb, ca)
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vs := quadVertices(0, 0, w, h, a, b, c, d, tx, ty, cr, cg, cb, ca)
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is := graphics.QuadIndices()
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m.orig.DrawTriangles(shared, vs, is, colorm, mode, filter, driver.AddressClampToZero)
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}
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@ -140,12 +138,28 @@ func (m *mipmap) drawImage(src *mipmap, bounds image.Rectangle, geom *GeoM, colo
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}
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func (m *mipmap) drawTriangles(src *mipmap, bounds image.Rectangle, vertices []Vertex, indices []uint16, colorm *affine.ColorM, mode driver.CompositeMode, filter driver.Filter, address driver.Address) {
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bx0 := float32(bounds.Min.X)
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by0 := float32(bounds.Min.Y)
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bx1 := float32(bounds.Max.X)
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by1 := float32(bounds.Max.Y)
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// TODO: Needs boundary check optimization?
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// See https://go101.org/article/bounds-check-elimination.html
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vs := vertexSlice(len(vertices))
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for idx, v := range vertices {
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src.orig.PutVertex(vs[idx*graphics.VertexFloatNum:(idx+1)*graphics.VertexFloatNum],
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float32(v.DstX), float32(v.DstY), v.SrcX, v.SrcY,
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float32(bounds.Min.X), float32(bounds.Min.Y), float32(bounds.Max.X), float32(bounds.Max.Y),
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v.ColorR, v.ColorG, v.ColorB, v.ColorA)
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for i, v := range vertices {
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vs[i*graphics.VertexFloatNum] = v.DstX
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vs[i*graphics.VertexFloatNum+1] = v.DstY
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vs[i*graphics.VertexFloatNum+2] = v.SrcX
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vs[i*graphics.VertexFloatNum+3] = v.SrcY
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vs[i*graphics.VertexFloatNum+4] = bx0
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vs[i*graphics.VertexFloatNum+5] = by0
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vs[i*graphics.VertexFloatNum+6] = bx1
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vs[i*graphics.VertexFloatNum+7] = by1
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vs[i*graphics.VertexFloatNum+8] = v.ColorR
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vs[i*graphics.VertexFloatNum+9] = v.ColorG
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vs[i*graphics.VertexFloatNum+10] = v.ColorB
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vs[i*graphics.VertexFloatNum+11] = v.ColorA
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}
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m.orig.DrawTriangles(src.orig, vs, indices, colorm, mode, filter, address)
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m.disposeMipmaps()
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@ -170,12 +184,12 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
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}
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var src *shareable.Image
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vs := vertexSlice(4)
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var vs []float32
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var filter driver.Filter
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switch {
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case level == 1:
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src = m.orig
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graphics.PutQuadVertices(vs, src, r.Min.X, r.Min.Y, r.Max.X, r.Max.Y, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
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vs = quadVertices(r.Min.X, r.Min.Y, r.Max.X, r.Max.Y, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
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filter = driver.FilterLinear
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case level > 1:
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src = m.level(r, level-1)
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@ -184,11 +198,11 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
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return nil
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}
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w, h := src.Size()
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graphics.PutQuadVertices(vs, src, 0, 0, w, h, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
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vs = quadVertices(0, 0, w, h, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
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filter = driver.FilterLinear
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case level == -1:
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src = m.orig
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graphics.PutQuadVertices(vs, src, r.Min.X, r.Min.Y, r.Max.X, r.Max.Y, 2, 0, 0, 2, 0, 0, 1, 1, 1, 1)
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vs = quadVertices(r.Min.X, r.Min.Y, r.Max.X, r.Max.Y, 2, 0, 0, 2, 0, 0, 1, 1, 1, 1)
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filter = driver.FilterNearest
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case level < -1:
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src = m.level(r, level+1)
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@ -197,7 +211,7 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
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return nil
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}
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w, h := src.Size()
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graphics.PutQuadVertices(vs, src, 0, 0, w, h, 2, 0, 0, 2, 0, 0, 1, 1, 1, 1)
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vs = quadVertices(0, 0, w, h, 2, 0, 0, 2, 0, 0, 1, 1, 1, 1)
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filter = driver.FilterNearest
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default:
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panic(fmt.Sprintf("ebiten: invalid level: %d", level))
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66
vertex.go
66
vertex.go
@ -57,3 +57,69 @@ func (v *verticesBackend) slice(n int) []float32 {
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func vertexSlice(n int) []float32 {
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return theVerticesBackend.slice(n)
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}
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func quadVertices(sx0, sy0, sx1, sy1 int, a, b, c, d, tx, ty float32, cr, cg, cb, ca float32) []float32 {
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x := float32(sx1 - sx0)
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y := float32(sy1 - sy0)
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ax, by, cx, dy := a*x, b*y, c*x, d*y
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u0, v0, u1, v1 := float32(sx0), float32(sy0), float32(sx1), float32(sy1)
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// This function is very performance-sensitive and implement in a very dumb way.
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vs := vertexSlice(4)
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_ = vs[:48]
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// For each values, see the comment at shareable.(*Image).DrawTriangles.
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vs[0] = tx
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vs[1] = ty
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vs[2] = u0
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vs[3] = v0
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vs[4] = u0
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vs[5] = v0
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vs[6] = u1
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vs[7] = v1
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vs[8] = cr
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vs[9] = cg
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vs[10] = cb
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vs[11] = ca
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vs[12] = ax + tx
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vs[13] = cx + ty
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vs[14] = u1
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vs[15] = v0
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vs[16] = u0
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vs[17] = v0
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vs[18] = u1
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vs[19] = v1
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vs[20] = cr
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vs[21] = cg
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vs[22] = cb
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vs[23] = ca
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vs[24] = by + tx
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vs[25] = dy + ty
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vs[26] = u0
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vs[27] = v1
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vs[28] = u0
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vs[29] = v0
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vs[30] = u1
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vs[31] = v1
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vs[32] = cr
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vs[33] = cg
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vs[34] = cb
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vs[35] = ca
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vs[36] = ax + by + tx
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vs[37] = cx + dy + ty
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vs[38] = u1
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vs[39] = v1
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vs[40] = u0
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vs[41] = v0
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vs[42] = u1
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vs[43] = v1
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vs[44] = cr
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vs[45] = cg
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vs[46] = cb
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vs[47] = ca
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return vs
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}
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