mth/ebiten
1
0
Fork 0
mirror of https://github.com/hajimehoshi/ebiten.git synced 2024-12-24 18:58:54 +01:00
Code Issues Packages Projects Releases Wiki Activity

graphics: Cache total bytes

Browse Source
This commit is contained in:
Hajime Hoshi 2016-10-29 01:07:19 +09:00
parent 2b2d6157c7
commit 6de9e6696e
2 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
internal/graphics/command.go
View File

@ -199,7 +199,7 @@ type drawImageCommand struct {
} }
func QuadVertexSizeInBytes() int { func QuadVertexSizeInBytes() int {
return 4 * theArrayBufferLayout.total() return 4 * theArrayBufferLayout.totalBytes()
} }
func (c *drawImageCommand) Exec(context *opengl.Context, indexOffsetInBytes int) error { func (c *drawImageCommand) Exec(context *opengl.Context, indexOffsetInBytes int) error {

13
internal/graphics/program.go
View File

@ -30,25 +30,30 @@ type arrayBufferLayoutPart struct {
type arrayBufferLayout struct { type arrayBufferLayout struct {
parts []arrayBufferLayoutPart parts []arrayBufferLayoutPart
total int
} }
func (a *arrayBufferLayout) total() int { func (a *arrayBufferLayout) totalBytes() int {
if a.total != 0 {
return a.total
}
t := 0 t := 0
for _, p := range a.parts { for _, p := range a.parts {
t += p.dataType.SizeInBytes() * p.num t += p.dataType.SizeInBytes() * p.num
} }
return t a.total = t
return a.total
} }
func (a *arrayBufferLayout) newArrayBuffer(c *opengl.Context) opengl.Buffer { func (a *arrayBufferLayout) newArrayBuffer(c *opengl.Context) opengl.Buffer {
return c.NewBuffer(opengl.ArrayBuffer, a.total()*4*maxQuads, opengl.DynamicDraw) return c.NewBuffer(opengl.ArrayBuffer, a.totalBytes()*4*maxQuads, opengl.DynamicDraw)
} }
func (a *arrayBufferLayout) enable(c *opengl.Context, program opengl.Program) { func (a *arrayBufferLayout) enable(c *opengl.Context, program opengl.Program) {
for _, p := range a.parts { for _, p := range a.parts {
c.EnableVertexAttribArray(program, p.name) c.EnableVertexAttribArray(program, p.name)
} }
total := a.total() total := a.totalBytes()
offset := 0 offset := 0
for _, p := range a.parts { for _, p := range a.parts {
c.VertexAttribPointer(program, p.name, p.num, p.dataType, p.normalize, total, offset) c.VertexAttribPointer(program, p.name, p.num, p.dataType, p.normalize, total, offset)