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ui: Delay initializing the context

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This commit is contained in:
Hajime Hoshi 2016-07-23 21:43:35 +09:00
parent 3553fc55c3
commit 5a3ea34cfc
2 changed files with 47 additions and 42 deletions
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70
internal/graphics/opengl/context_desktop.go
View File

@ -77,12 +77,12 @@ func NewContext(runOnMainThread func(func() error) error) (*Context, error) {
return c, nil return c, nil
} }
func (c *Context) RunOnContextThread(f func() error) error { func (c *Context) runOnContextThread(f func() error) error {
return c.runOnMainThread(f) return c.runOnMainThread(f)
} }
func (c *Context) Reset() error { func (c *Context) Reset() error {
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
if c.init { if c.init {
return nil return nil
} }
@ -101,14 +101,14 @@ func (c *Context) Reset() error {
c.lastViewportWidth = 0 c.lastViewportWidth = 0
c.lastViewportHeight = 0 c.lastViewportHeight = 0
c.lastCompositeMode = CompositeModeUnknown c.lastCompositeMode = CompositeModeUnknown
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
gl.Enable(gl.BLEND) gl.Enable(gl.BLEND)
return nil return nil
}); err != nil { }); err != nil {
return err return err
} }
c.BlendFunc(CompositeModeSourceOver) c.BlendFunc(CompositeModeSourceOver)
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
f := int32(0) f := int32(0)
gl.GetIntegerv(gl.FRAMEBUFFER_BINDING, &f) gl.GetIntegerv(gl.FRAMEBUFFER_BINDING, &f)
c.screenFramebuffer = Framebuffer(f) c.screenFramebuffer = Framebuffer(f)
@ -120,7 +120,7 @@ func (c *Context) Reset() error {
} }
func (c *Context) BlendFunc(mode CompositeMode) { func (c *Context) BlendFunc(mode CompositeMode) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
if c.lastCompositeMode == mode { if c.lastCompositeMode == mode {
return nil return nil
} }
@ -133,7 +133,7 @@ func (c *Context) BlendFunc(mode CompositeMode) {
func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (Texture, error) { func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (Texture, error) {
var texture Texture var texture Texture
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
var t uint32 var t uint32
gl.GenTextures(1, &t) gl.GenTextures(1, &t)
// TODO: Use gl.IsTexture // TODO: Use gl.IsTexture
@ -149,7 +149,7 @@ func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (
if err := c.BindTexture(texture); err != nil { if err := c.BindTexture(texture); err != nil {
return 0, err return 0, err
} }
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, int32(filter)) gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, int32(filter))
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, int32(filter)) gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, int32(filter))
@ -166,7 +166,7 @@ func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (
} }
func (c *Context) bindFramebufferImpl(f Framebuffer) error { func (c *Context) bindFramebufferImpl(f Framebuffer) error {
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
gl.BindFramebuffer(gl.FRAMEBUFFER, uint32(f)) gl.BindFramebuffer(gl.FRAMEBUFFER, uint32(f))
return nil return nil
}); err != nil { }); err != nil {
@ -177,14 +177,14 @@ func (c *Context) bindFramebufferImpl(f Framebuffer) error {
func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]uint8, error) { func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]uint8, error) {
var pixels []uint8 var pixels []uint8
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
gl.Flush() gl.Flush()
return nil return nil
}); err != nil { }); err != nil {
return nil, err return nil, err
} }
c.bindFramebuffer(f) c.bindFramebuffer(f)
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
pixels = make([]uint8, 4*width*height) pixels = make([]uint8, 4*width*height)
gl.ReadPixels(0, 0, int32(width), int32(height), gl.RGBA, gl.UNSIGNED_BYTE, gl.Ptr(pixels)) gl.ReadPixels(0, 0, int32(width), int32(height), gl.RGBA, gl.UNSIGNED_BYTE, gl.Ptr(pixels))
if e := gl.GetError(); e != gl.NO_ERROR { if e := gl.GetError(); e != gl.NO_ERROR {
@ -199,7 +199,7 @@ func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]uint8,
} }
func (c *Context) bindTextureImpl(t Texture) error { func (c *Context) bindTextureImpl(t Texture) error {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.BindTexture(gl.TEXTURE_2D, uint32(t)) gl.BindTexture(gl.TEXTURE_2D, uint32(t))
return nil return nil
}) })
@ -207,7 +207,7 @@ func (c *Context) bindTextureImpl(t Texture) error {
} }
func (c *Context) DeleteTexture(t Texture) { func (c *Context) DeleteTexture(t Texture) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
tt := uint32(t) tt := uint32(t)
if !gl.IsTexture(tt) { if !gl.IsTexture(tt) {
return nil return nil
@ -222,7 +222,7 @@ func (c *Context) DeleteTexture(t Texture) {
func (c *Context) IsTexture(t Texture) bool { func (c *Context) IsTexture(t Texture) bool {
r := false r := false
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
r = gl.IsTexture(uint32(t)) r = gl.IsTexture(uint32(t))
return nil return nil
}) })
@ -230,7 +230,7 @@ func (c *Context) IsTexture(t Texture) bool {
} }
func (c *Context) TexSubImage2D(p []uint8, width, height int) { func (c *Context) TexSubImage2D(p []uint8, width, height int) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.TexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, int32(width), int32(height), gl.RGBA, gl.UNSIGNED_BYTE, gl.Ptr(p)) gl.TexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, int32(width), int32(height), gl.RGBA, gl.UNSIGNED_BYTE, gl.Ptr(p))
return nil return nil
}) })
@ -243,7 +243,7 @@ func (c *Context) BindScreenFramebuffer() error {
func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) { func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
var framebuffer Framebuffer var framebuffer Framebuffer
var f uint32 var f uint32
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
gl.GenFramebuffers(1, &f) gl.GenFramebuffers(1, &f)
// TODO: Use gl.IsFramebuffer // TODO: Use gl.IsFramebuffer
if f <= 0 { if f <= 0 {
@ -254,7 +254,7 @@ func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
return 0, err return 0, err
} }
c.bindFramebuffer(Framebuffer(f)) c.bindFramebuffer(Framebuffer(f))
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, uint32(texture), 0) gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, uint32(texture), 0)
s := gl.CheckFramebufferStatus(gl.FRAMEBUFFER) s := gl.CheckFramebufferStatus(gl.FRAMEBUFFER)
if s != gl.FRAMEBUFFER_COMPLETE { if s != gl.FRAMEBUFFER_COMPLETE {
@ -275,14 +275,14 @@ func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
} }
func (c *Context) setViewportImpl(width, height int) error { func (c *Context) setViewportImpl(width, height int) error {
return c.RunOnContextThread(func() error { return c.runOnContextThread(func() error {
gl.Viewport(0, 0, int32(width), int32(height)) gl.Viewport(0, 0, int32(width), int32(height))
return nil return nil
}) })
} }
func (c *Context) FillFramebuffer(r, g, b, a float64) error { func (c *Context) FillFramebuffer(r, g, b, a float64) error {
return c.RunOnContextThread(func() error { return c.runOnContextThread(func() error {
gl.ClearColor(float32(r), float32(g), float32(b), float32(a)) gl.ClearColor(float32(r), float32(g), float32(b), float32(a))
gl.Clear(gl.COLOR_BUFFER_BIT) gl.Clear(gl.COLOR_BUFFER_BIT)
return nil return nil
@ -290,7 +290,7 @@ func (c *Context) FillFramebuffer(r, g, b, a float64) error {
} }
func (c *Context) DeleteFramebuffer(f Framebuffer) { func (c *Context) DeleteFramebuffer(f Framebuffer) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
ff := uint32(f) ff := uint32(f)
if !gl.IsFramebuffer(ff) { if !gl.IsFramebuffer(ff) {
return nil return nil
@ -307,7 +307,7 @@ func (c *Context) DeleteFramebuffer(f Framebuffer) {
func (c *Context) NewShader(shaderType ShaderType, source string) (Shader, error) { func (c *Context) NewShader(shaderType ShaderType, source string) (Shader, error) {
var shader Shader var shader Shader
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
s := gl.CreateShader(uint32(shaderType)) s := gl.CreateShader(uint32(shaderType))
if s == 0 { if s == 0 {
return errors.New("opengl: glCreateShader failed") return errors.New("opengl: glCreateShader failed")
@ -337,7 +337,7 @@ func (c *Context) NewShader(shaderType ShaderType, source string) (Shader, error
} }
func (c *Context) DeleteShader(s Shader) { func (c *Context) DeleteShader(s Shader) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.DeleteShader(uint32(s)) gl.DeleteShader(uint32(s))
return nil return nil
}) })
@ -349,7 +349,7 @@ func (c *Context) GlslHighpSupported() bool {
func (c *Context) NewProgram(shaders []Shader) (Program, error) { func (c *Context) NewProgram(shaders []Shader) (Program, error) {
var program Program var program Program
if err := c.RunOnContextThread(func() error { if err := c.runOnContextThread(func() error {
p := gl.CreateProgram() p := gl.CreateProgram()
if p == 0 { if p == 0 {
return errors.New("opengl: glCreateProgram failed") return errors.New("opengl: glCreateProgram failed")
@ -373,14 +373,14 @@ func (c *Context) NewProgram(shaders []Shader) (Program, error) {
} }
func (c *Context) UseProgram(p Program) { func (c *Context) UseProgram(p Program) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.UseProgram(uint32(p)) gl.UseProgram(uint32(p))
return nil return nil
}) })
} }
func (c *Context) DeleteProgram(p Program) { func (c *Context) DeleteProgram(p Program) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
if !gl.IsProgram(uint32(p)) { if !gl.IsProgram(uint32(p)) {
return nil return nil
} }
@ -398,7 +398,7 @@ func (c *Context) getUniformLocationImpl(p Program, location string) uniformLoca
} }
func (c *Context) UniformInt(p Program, location string, v int) { func (c *Context) UniformInt(p Program, location string, v int) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
l := int32(c.locationCache.GetUniformLocation(c, p, location)) l := int32(c.locationCache.GetUniformLocation(c, p, location))
gl.Uniform1i(l, int32(v)) gl.Uniform1i(l, int32(v))
return nil return nil
@ -406,7 +406,7 @@ func (c *Context) UniformInt(p Program, location string, v int) {
} }
func (c *Context) UniformFloats(p Program, location string, v []float32) { func (c *Context) UniformFloats(p Program, location string, v []float32) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
l := int32(c.locationCache.GetUniformLocation(c, p, location)) l := int32(c.locationCache.GetUniformLocation(c, p, location))
switch len(v) { switch len(v) {
case 4: case 4:
@ -429,7 +429,7 @@ func (c *Context) getAttribLocationImpl(p Program, location string) attribLocati
} }
func (c *Context) VertexAttribPointer(p Program, location string, normalize bool, stride int, size int, v int) { func (c *Context) VertexAttribPointer(p Program, location string, normalize bool, stride int, size int, v int) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
l := c.locationCache.GetAttribLocation(c, p, location) l := c.locationCache.GetAttribLocation(c, p, location)
gl.VertexAttribPointer(uint32(l), int32(size), gl.SHORT, normalize, int32(stride), gl.PtrOffset(v)) gl.VertexAttribPointer(uint32(l), int32(size), gl.SHORT, normalize, int32(stride), gl.PtrOffset(v))
return nil return nil
@ -437,7 +437,7 @@ func (c *Context) VertexAttribPointer(p Program, location string, normalize bool
} }
func (c *Context) EnableVertexAttribArray(p Program, location string) { func (c *Context) EnableVertexAttribArray(p Program, location string) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
l := c.locationCache.GetAttribLocation(c, p, location) l := c.locationCache.GetAttribLocation(c, p, location)
gl.EnableVertexAttribArray(uint32(l)) gl.EnableVertexAttribArray(uint32(l))
return nil return nil
@ -445,7 +445,7 @@ func (c *Context) EnableVertexAttribArray(p Program, location string) {
} }
func (c *Context) DisableVertexAttribArray(p Program, location string) { func (c *Context) DisableVertexAttribArray(p Program, location string) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
l := c.locationCache.GetAttribLocation(c, p, location) l := c.locationCache.GetAttribLocation(c, p, location)
gl.DisableVertexAttribArray(uint32(l)) gl.DisableVertexAttribArray(uint32(l))
return nil return nil
@ -454,7 +454,7 @@ func (c *Context) DisableVertexAttribArray(p Program, location string) {
func (c *Context) NewBuffer(bufferType BufferType, v interface{}, bufferUsage BufferUsage) Buffer { func (c *Context) NewBuffer(bufferType BufferType, v interface{}, bufferUsage BufferUsage) Buffer {
var buffer Buffer var buffer Buffer
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
var b uint32 var b uint32
gl.GenBuffers(1, &b) gl.GenBuffers(1, &b)
gl.BindBuffer(uint32(bufferType), b) gl.BindBuffer(uint32(bufferType), b)
@ -473,21 +473,21 @@ func (c *Context) NewBuffer(bufferType BufferType, v interface{}, bufferUsage Bu
} }
func (c *Context) BindElementArrayBuffer(b Buffer) { func (c *Context) BindElementArrayBuffer(b Buffer) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, uint32(b)) gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, uint32(b))
return nil return nil
}) })
} }
func (c *Context) BufferSubData(bufferType BufferType, data []int16) { func (c *Context) BufferSubData(bufferType BufferType, data []int16) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.BufferSubData(uint32(bufferType), 0, 2*len(data), gl.Ptr(data)) gl.BufferSubData(uint32(bufferType), 0, 2*len(data), gl.Ptr(data))
return nil return nil
}) })
} }
func (c *Context) DeleteBuffer(b Buffer) { func (c *Context) DeleteBuffer(b Buffer) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
bb := uint32(b) bb := uint32(b)
gl.DeleteBuffers(1, &bb) gl.DeleteBuffers(1, &bb)
return nil return nil
@ -495,14 +495,14 @@ func (c *Context) DeleteBuffer(b Buffer) {
} }
func (c *Context) DrawElements(mode Mode, len int, offsetInBytes int) { func (c *Context) DrawElements(mode Mode, len int, offsetInBytes int) {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.DrawElements(uint32(mode), int32(len), gl.UNSIGNED_SHORT, gl.PtrOffset(offsetInBytes)) gl.DrawElements(uint32(mode), int32(len), gl.UNSIGNED_SHORT, gl.PtrOffset(offsetInBytes))
return nil return nil
}) })
} }
func (c *Context) Flush() { func (c *Context) Flush() {
c.RunOnContextThread(func() error { c.runOnContextThread(func() error {
gl.Flush() gl.Flush()
return nil return nil
}) })

19
internal/ui/ui_glfw.go
View File

@ -33,7 +33,6 @@ type userInterface struct {
width int width int
height int height int
scale float64 scale float64
context *opengl.Context
funcs chan func() funcs chan func()
sizeChanged bool sizeChanged bool
} }
@ -44,8 +43,18 @@ func CurrentUI() UserInterface {
return currentUI return currentUI
} }
var glContext *opengl.Context
func GLContext() *opengl.Context { func GLContext() *opengl.Context {
return currentUI.context if glContext != nil {
return glContext
}
var err error
glContext, err = opengl.NewContext(currentUI.runOnMainThread)
if err != nil {
panic(err)
}
return glContext
} }
func init() { func init() {
@ -77,10 +86,6 @@ func initialize() error {
} }
u.window.MakeContextCurrent() u.window.MakeContextCurrent()
glfw.SwapInterval(1) glfw.SwapInterval(1)
u.context, err = opengl.NewContext(u.runOnMainThread)
if err != nil {
return err
}
currentUI = u currentUI = u
return nil return nil
} }
@ -244,7 +249,7 @@ func (u *userInterface) SwapBuffers() error {
func (u *userInterface) swapBuffers() error { func (u *userInterface) swapBuffers() error {
// The bound framebuffer must be the default one (0) before swapping buffers. // The bound framebuffer must be the default one (0) before swapping buffers.
if err := u.context.BindScreenFramebuffer(); err != nil { if err := glContext.BindScreenFramebuffer(); err != nil {
return err return err
} }
u.window.SwapBuffers() u.window.SwapBuffers()