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Fix BindFramebuffer to pass JS null object explicitly

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This commit is contained in:
Hajime Hoshi 2015-01-02 23:52:40 +09:00
parent 24c39bcd18
commit 5c755f2f31
1 changed files with 8 additions and 1 deletions
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9
internal/opengl/context_js.go
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@ -32,6 +32,9 @@ type context struct {
gl *webgl.Context
}
// TODO: Is there any better way to get null value?
var nullVal = js.Global.Call("eval", "null")
func NewContext(gl *webgl.Context) *Context {
c := &Context{
Nearest: FilterType(gl.NEAREST),
@ -123,7 +126,11 @@ func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
func (c *Context) SetViewport(f Framebuffer, width, height int) error {
gl := c.gl
gl.Flush()
gl.BindFramebuffer(gl.FRAMEBUFFER, f)
if f != nil {
gl.BindFramebuffer(gl.FRAMEBUFFER, f)
} else {
gl.BindFramebuffer(gl.FRAMEBUFFER, nullVal)
}
err := gl.CheckFramebufferStatus(gl.FRAMEBUFFER)
if err != gl.FRAMEBUFFER_COMPLETE {
if gl.GetError() != 0 {