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Add gl.go

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This commit is contained in:
Hajime Hoshi 2014-01-11 11:18:55 +09:00
parent 41eb300065
commit 738c06c28d
2 changed files with 20 additions and 9 deletions
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13
graphics/opengl/context.go
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@ -1,10 +1,5 @@
package opengl package opengl
// #cgo LDFLAGS: -framework OpenGL
//
// #include <stdlib.h>
// #include <OpenGL/gl.h>
import "C"
import ( import (
"github.com/hajimehoshi/go-ebiten/graphics" "github.com/hajimehoshi/go-ebiten/graphics"
"github.com/hajimehoshi/go-ebiten/graphics/matrix" "github.com/hajimehoshi/go-ebiten/graphics/matrix"
@ -38,6 +33,8 @@ func newContext(ids *ids, screenWidth, screenHeight, screenScale int) *Context {
context.ResetOffscreen() context.ResetOffscreen()
context.Clear() context.Clear()
enableAlphaBlending()
return context return context
} }
@ -47,9 +44,6 @@ func (context *Context) Dispose() {
} }
func (context *Context) update(draw func(graphics.Context)) { func (context *Context) update(draw func(graphics.Context)) {
C.glEnable(C.GL_TEXTURE_2D)
C.glEnable(C.GL_BLEND)
context.ResetOffscreen() context.ResetOffscreen()
context.Clear() context.Clear()
@ -63,7 +57,8 @@ func (context *Context) update(draw func(graphics.Context)) {
geometryMatrix.Scale(scale, scale) geometryMatrix.Scale(scale, scale)
context.DrawRenderTarget(context.screenId, context.DrawRenderTarget(context.screenId,
geometryMatrix, matrix.IdentityColor()) geometryMatrix, matrix.IdentityColor())
C.glFlush()
flush()
} }
func (context *Context) Clear() { func (context *Context) Clear() {

16
graphics/opengl/gl.go Normal file
View File

@ -0,0 +1,16 @@
package opengl
// #cgo LDFLAGS: -framework OpenGL
//
// #include <stdlib.h>
// #include <OpenGL/gl.h>
import "C"
func enableAlphaBlending() {
C.glEnable(C.GL_TEXTURE_2D)
C.glEnable(C.GL_BLEND)
}
func flush() {
C.glFlush()
}