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graphics: Calc capacity of vertices

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This commit is contained in:
Hajime Hoshi 2016-10-27 01:42:18 +09:00
parent fb4ac5cd56
commit fbf6b6c525
1 changed files with 8 additions and 1 deletions
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9
internal/graphics/command.go
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@ -126,7 +126,14 @@ func (q *commandQueue) Flush(context *opengl.Context) error {
// glViewport must be called at least at every frame on iOS. // glViewport must be called at least at every frame on iOS.
context.ResetViewportSize() context.ResetViewportSize()
for _, g := range q.commandGroups() { for _, g := range q.commandGroups() {
vertices := []int16{} n := 0
for _, c := range g {
switch c := c.(type) {
case *drawImageCommand:
n += len(c.vertices)
}
}
vertices := make([]int16, 0, n)
for _, c := range g { for _, c := range g {
switch c := c.(type) { switch c := c.(type) {
case *drawImageCommand: case *drawImageCommand: