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graphics: Avoid creating struct as much as possible

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This commit is contained in:
Hajime Hoshi 2017-05-02 22:45:09 +09:00
parent aa8e77e0bf
commit 5699822d64
2 changed files with 26 additions and 24 deletions
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36
internal/graphics/command.go
View File

@ -42,9 +42,7 @@ var theCommandQueue = &commandQueue{
vertices: []float32{},
}
func (q *commandQueue) AppendVertices(vertices []float32) {
q.m.Lock()
defer q.m.Unlock()
func (q *commandQueue) appendVertices(vertices []float32) {
if len(q.vertices) < q.verticesNum+len(vertices) {
n := q.verticesNum + len(vertices) - len(q.vertices)
q.vertices = append(q.vertices, make([]float32, n)...)
@ -53,19 +51,31 @@ func (q *commandQueue) AppendVertices(vertices []float32) {
q.verticesNum += len(vertices)
}
func (q *commandQueue) Enqueue(command command) {
func (q *commandQueue) EnqueueDrawImageCommand(dst, src *Image, vertices []float32, clr affine.ColorM, mode opengl.CompositeMode) {
q.m.Lock()
defer q.m.Unlock()
q.appendVertices(vertices)
if 0 < len(q.commands) {
if c1, ok := q.commands[len(q.commands)-1].(*drawImageCommand); ok {
if c2, ok := command.(*drawImageCommand); ok {
if c1.isMergeable(c2) {
c1.verticesNum += c2.verticesNum
if c, ok := q.commands[len(q.commands)-1].(*drawImageCommand); ok {
if c.isMergeable(dst, src, clr, mode) {
c.verticesNum += len(vertices)
return
}
}
}
c := &drawImageCommand{
dst: dst,
src: src,
verticesNum: len(vertices),
color: clr,
mode: mode,
}
q.commands = append(q.commands, c)
}
func (q *commandQueue) Enqueue(command command) {
q.m.Lock()
defer q.m.Unlock()
q.commands = append(q.commands, command)
}
@ -225,17 +235,17 @@ func (c *drawImageCommand) split(quadsNum int) [2]*drawImageCommand {
return [2]*drawImageCommand{&c1, &c2}
}
func (c *drawImageCommand) isMergeable(other *drawImageCommand) bool {
if c.dst != other.dst {
func (c *drawImageCommand) isMergeable(dst, src *Image, clr affine.ColorM, mode opengl.CompositeMode) bool {
if c.dst != dst {
return false
}
if c.src != other.src {
if c.src != src {
return false
}
if !c.color.Equals(&other.color) {
if !c.color.Equals(&clr) {
return false
}
if c.mode != other.mode {
if c.mode != mode {
return false
}
return true

10
internal/graphics/image.go
View File

@ -142,15 +142,7 @@ func (i *Image) Fill(clr color.RGBA) {
}
func (i *Image) DrawImage(src *Image, vertices []float32, clr affine.ColorM, mode opengl.CompositeMode) {
c := &drawImageCommand{
dst: i,
src: src,
verticesNum: len(vertices),
color: clr,
mode: mode,
}
theCommandQueue.AppendVertices(vertices)
theCommandQueue.Enqueue(c)
theCommandQueue.EnqueueDrawImageCommand(i, src, vertices, clr, mode)
}
func (i *Image) Pixels(context *opengl.Context) ([]uint8, error) {