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opengl: Update context_mobile.go
This commit is contained in:
Hajime Hoshi
parent
e99736d5a5
commit
de541bdd7d
@ -14,7 +14,7 @@
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// NOTICE: This file is not maintained well.
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// +build android ios
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// +build android
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package opengl
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@ -48,16 +48,11 @@ func (p Program) id() programID {
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}
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type context struct {
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locationCache *locationCache
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worker mgl.Worker
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funcs chan func()
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gl mgl.Context
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locationCache *locationCache
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lastCompositeMode CompositeMode
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}
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// TODO: This variable can be in the context struct.
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var (
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gl mgl.Context
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)
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func NewContext() *Context {
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c := &Context{
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Nearest: mgl.NEAREST,
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@ -72,42 +67,36 @@ func NewContext() *Context {
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Lines: mgl.LINES,
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}
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c.locationCache = newLocationCache()
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c.funcs = make(chan func())
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gl, c.worker = mgl.NewContext()
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c.lastCompositeMode = CompositeModeUnknown
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return c
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}
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func (c *Context) Loop() {
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for {
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select {
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case <-c.worker.WorkAvailable():
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c.worker.DoWork()
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case f := <-c.funcs:
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f()
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}
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func (c *Context) SetContext(gl mgl.Context) {
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c.gl = gl
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if gl == nil {
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return
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}
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}
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func (c *Context) Init() {
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// This initialization must be done after Loop is called.
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// This is why Init is separated from NewContext.
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// Textures' pixel formats are alpha premultiplied.
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gl.Enable(mgl.BLEND)
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gl.BlendFunc(mgl.ONE, mgl.ONE_MINUS_SRC_ALPHA)
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c.BlendFunc(CompositeModeSourceOver)
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}
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func (c *Context) RunOnContextThread(f func()) {
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ch := make(chan struct{})
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c.funcs <- func() {
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f()
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close(ch)
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func (c *Context) IsGLContextNil() bool {
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return c.gl == nil
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}
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func (c *Context) BlendFunc(mode CompositeMode) {
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gl := c.gl
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if c.lastCompositeMode == mode {
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return
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}
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<-ch
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return
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c.lastCompositeMode = mode
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s, d := c.operations(mode)
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gl.BlendFunc(mgl.Enum(s), mgl.Enum(d))
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}
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func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (Texture, error) {
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gl := c.gl
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t := gl.CreateTexture()
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if t.Value <= 0 {
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return Texture{}, errors.New("opengl: creating texture failed")
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@ -128,6 +117,7 @@ func (c *Context) NewTexture(width, height int, pixels []uint8, filter Filter) (
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}
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func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]uint8, error) {
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gl := c.gl
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gl.Flush()
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gl.BindFramebuffer(mgl.FRAMEBUFFER, mgl.Framebuffer(f))
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@ -141,22 +131,27 @@ func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]uint8,
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}
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func (c *Context) BindTexture(t Texture) {
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gl := c.gl
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gl.BindTexture(mgl.TEXTURE_2D, mgl.Texture(t))
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}
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func (c *Context) DeleteTexture(t Texture) {
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gl := c.gl
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gl.DeleteTexture(mgl.Texture(t))
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}
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func (c *Context) TexSubImage2D(p []uint8, width, height int) {
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gl := c.gl
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gl.TexSubImage2D(mgl.TEXTURE_2D, 0, 0, 0, width, height, mgl.RGBA, mgl.UNSIGNED_BYTE, p)
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}
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func (c *Context) BindZeroFramebuffer() {
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gl := c.gl
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gl.BindFramebuffer(mgl.FRAMEBUFFER, mgl.Framebuffer(ZeroFramebuffer))
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}
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func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
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gl := c.gl
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f := gl.CreateFramebuffer()
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if f.Value <= 0 {
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return Framebuffer{}, errors.New("opengl: creating framebuffer failed: gl.IsFramebuffer returns false")
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@ -179,6 +174,7 @@ func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
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}
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func (c *Context) SetViewport(f Framebuffer, width, height int) error {
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gl := c.gl
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gl.Flush()
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gl.BindFramebuffer(mgl.FRAMEBUFFER, mgl.Framebuffer(f))
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if err := gl.CheckFramebufferStatus(mgl.FRAMEBUFFER); err != mgl.FRAMEBUFFER_COMPLETE {
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@ -192,16 +188,19 @@ func (c *Context) SetViewport(f Framebuffer, width, height int) error {
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}
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func (c *Context) FillFramebuffer(r, g, b, a float64) error {
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gl := c.gl
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gl.ClearColor(float32(r), float32(g), float32(b), float32(a))
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gl.Clear(mgl.COLOR_BUFFER_BIT)
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return nil
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}
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func (c *Context) DeleteFramebuffer(f Framebuffer) {
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gl := c.gl
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gl.DeleteFramebuffer(mgl.Framebuffer(f))
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}
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func (c *Context) NewShader(shaderType ShaderType, source string) (Shader, error) {
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gl := c.gl
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s := gl.CreateShader(mgl.Enum(shaderType))
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if s.Value == 0 {
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return Shader{}, errors.New("opengl: glCreateShader failed")
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@ -218,14 +217,17 @@ func (c *Context) NewShader(shaderType ShaderType, source string) (Shader, error
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}
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func (c *Context) DeleteShader(s Shader) {
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gl := c.gl
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gl.DeleteShader(mgl.Shader(s))
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}
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func (c *Context) GlslHighpSupported() bool {
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// TODO: Fix this
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return false
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}
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func (c *Context) NewProgram(shaders []Shader) (Program, error) {
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gl := c.gl
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p := gl.CreateProgram()
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if p.Value == 0 {
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return Program{}, errors.New("opengl: glCreateProgram failed")
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@ -243,10 +245,12 @@ func (c *Context) NewProgram(shaders []Shader) (Program, error) {
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}
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func (c *Context) UseProgram(p Program) {
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gl := c.gl
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gl.UseProgram(mgl.Program(p))
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}
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func (c *Context) getUniformLocation(p Program, location string) uniformLocation {
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gl := c.gl
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u := uniformLocation(gl.GetUniformLocation(mgl.Program(p), location))
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if u.Value == -1 {
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panic("invalid uniform location: " + location)
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@ -255,10 +259,12 @@ func (c *Context) getUniformLocation(p Program, location string) uniformLocation
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}
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func (c *Context) UniformInt(p Program, location string, v int) {
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gl := c.gl
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gl.Uniform1i(mgl.Uniform(c.locationCache.GetUniformLocation(c, p, location)), v)
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}
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func (c *Context) UniformFloats(p Program, location string, v []float32) {
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gl := c.gl
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l := mgl.Uniform(c.locationCache.GetUniformLocation(c, p, location))
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switch len(v) {
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case 4:
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@ -271,6 +277,7 @@ func (c *Context) UniformFloats(p Program, location string, v []float32) {
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}
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func (c *Context) getAttribLocation(p Program, location string) attribLocation {
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gl := c.gl
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a := attribLocation(gl.GetAttribLocation(mgl.Program(p), location))
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if a.Value == ^uint(0) {
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panic("invalid attrib location: " + location)
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@ -279,16 +286,19 @@ func (c *Context) getAttribLocation(p Program, location string) attribLocation {
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}
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func (c *Context) VertexAttribPointer(p Program, location string, normalize bool, stride int, size int, v int) {
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gl := c.gl
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l := c.locationCache.GetAttribLocation(c, p, location)
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gl.VertexAttribPointer(mgl.Attrib(l), size, mgl.SHORT, normalize, stride, v)
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}
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func (c *Context) EnableVertexAttribArray(p Program, location string) {
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gl := c.gl
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l := c.locationCache.GetAttribLocation(c, p, location)
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gl.EnableVertexAttribArray(mgl.Attrib(l))
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}
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func (c *Context) DisableVertexAttribArray(p Program, location string) {
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gl := c.gl
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l := c.locationCache.GetAttribLocation(c, p, location)
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gl.DisableVertexAttribArray(mgl.Attrib(l))
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}
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@ -312,6 +322,7 @@ func int16ToBytes(v []int16) []byte {
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}
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func (c *Context) NewBuffer(bufferType BufferType, v interface{}, bufferUsage BufferUsage) Buffer {
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gl := c.gl
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b := gl.CreateBuffer()
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gl.BindBuffer(mgl.Enum(bufferType), b)
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switch v := v.(type) {
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@ -327,13 +338,16 @@ func (c *Context) NewBuffer(bufferType BufferType, v interface{}, bufferUsage Bu
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}
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func (c *Context) BindElementArrayBuffer(b Buffer) {
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gl := c.gl
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gl.BindBuffer(mgl.ELEMENT_ARRAY_BUFFER, mgl.Buffer(b))
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}
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func (c *Context) BufferSubData(bufferType BufferType, data []int16) {
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gl := c.gl
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gl.BufferSubData(mgl.Enum(bufferType), 0, int16ToBytes(data))
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}
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func (c *Context) DrawElements(mode Mode, len int) {
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gl := c.gl
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gl.DrawElements(mgl.Enum(mode), len, mgl.UNSIGNED_SHORT, 0)
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}
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