mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
opengl: Remove dependencies on gopherjs/webgl
This is a preparation for #528
This commit is contained in:
Hajime Hoshi
parent
22ca490b6e
commit
b84dc0585d
@ -21,7 +21,6 @@ import (
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"fmt"
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"github.com/gopherjs/gopherjs/js"
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"github.com/gopherjs/webgl"
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"github.com/hajimehoshi/ebiten/internal/web"
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)
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@ -71,7 +70,7 @@ func init() {
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}
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type context struct {
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gl *webgl.Context
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gl *js.Object
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loseContext *js.Object
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lastProgramID programID
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}
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@ -81,21 +80,29 @@ func Init() error {
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return fmt.Errorf("opengl: Node.js is not supported")
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}
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if js.Global.Get("WebGLRenderingContext") == js.Undefined {
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return fmt.Errorf("opengl: WebGL is not supported")
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}
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// TODO: Define id?
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canvas := js.Global.Get("document").Call("querySelector", "canvas")
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gl, err := webgl.NewContext(canvas, &webgl.ContextAttributes{
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Alpha: true,
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PremultipliedAlpha: true,
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})
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if err != nil {
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return err
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attr := map[string]bool{
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"alpha": true,
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"premultipliedAlpha": true,
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}
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gl := canvas.Call("getContext", "webgl", attr)
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if gl == nil {
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gl = canvas.Call("getContext", "experimental-webgl", attr)
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if gl == nil {
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return fmt.Errorf("opengl: getContext failed")
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}
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}
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c := &Context{}
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c.gl = gl
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// Getting an extension might fail after the context is lost, so
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// it is required to get the extension here.
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c.loseContext = gl.GetExtension("WEBGL_lose_context")
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c.loseContext = gl.Call("getExtension", "WEBGL_lose_context")
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if c.loseContext != nil {
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// This testing function name is temporary.
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js.Global.Set("_ebiten_loseContextForTesting", func() {
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@ -114,9 +121,9 @@ func (c *Context) Reset() error {
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c.lastViewportHeight = 0
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c.lastCompositeMode = CompositeModeUnknown
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gl := c.gl
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gl.Enable(gl.BLEND)
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gl.Call("enable", gl.Get("BLEND"))
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c.BlendFunc(CompositeModeSourceOver)
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f := gl.GetParameter(gl.FRAMEBUFFER_BINDING)
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f := gl.Call("getParameter", gl.Get("FRAMEBUFFER_BINDING"))
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c.screenFramebuffer = f
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return nil
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}
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@ -128,34 +135,34 @@ func (c *Context) BlendFunc(mode CompositeMode) {
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c.lastCompositeMode = mode
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s, d := operations(mode)
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gl := c.gl
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gl.BlendFunc(int(s), int(d))
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gl.Call("blendFunc", int(s), int(d))
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}
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func (c *Context) NewTexture(width, height int) (Texture, error) {
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gl := c.gl
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t := gl.CreateTexture()
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t := gl.Call("createTexture")
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if t == nil {
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return nil, errors.New("opengl: glGenTexture failed")
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}
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gl.PixelStorei(gl.UNPACK_ALIGNMENT, 4)
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gl.Call("pixelStorei", gl.Get("UNPACK_ALIGNMENT"), 4)
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c.BindTexture(t)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
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gl.Call("texParameteri", gl.Get("TEXTURE_2D"), gl.Get("TEXTURE_MAG_FILTER"), gl.Get("NEAREST"))
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gl.Call("texParameteri", gl.Get("TEXTURE_2D"), gl.Get("TEXTURE_MIN_FILTER"), gl.Get("NEAREST"))
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gl.Call("texParameteri", gl.Get("TEXTURE_2D"), gl.Get("TEXTURE_WRAP_S"), gl.Get("CLAMP_TO_EDGE"))
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gl.Call("texParameteri", gl.Get("TEXTURE_2D"), gl.Get("TEXTURE_WRAP_T"), gl.Get("CLAMP_TO_EDGE"))
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// void texImage2D(GLenum target, GLint level, GLenum internalformat,
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// GLsizei width, GLsizei height, GLint border, GLenum format,
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// GLenum type, ArrayBufferView? pixels);
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gl.Call("texImage2D", gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
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gl.Call("texImage2D", gl.Get("TEXTURE_2D"), 0, gl.Get("RGBA"), width, height, 0, gl.Get("RGBA"), gl.Get("UNSIGNED_BYTE"), nil)
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return t, nil
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}
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func (c *Context) bindFramebufferImpl(f Framebuffer) {
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gl := c.gl
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gl.BindFramebuffer(gl.FRAMEBUFFER, f.(*js.Object))
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gl.Call("bindFramebuffer", gl.Get("FRAMEBUFFER"), f.(*js.Object))
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}
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func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]byte, error) {
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@ -164,8 +171,8 @@ func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]byte, e
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c.bindFramebuffer(f)
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pixels := js.Global.Get("Uint8Array").New(4 * width * height)
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gl.ReadPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, pixels)
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if e := gl.GetError(); e != gl.NO_ERROR {
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gl.Call("readPixels", 0, 0, width, height, gl.Get("RGBA"), gl.Get("UNSIGNED_BYTE"), pixels)
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if e := gl.Call("getError"); e != gl.Get("NO_ERROR") {
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return nil, errors.New(fmt.Sprintf("opengl: error: %d", e))
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}
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return pixels.Interface().([]byte), nil
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@ -173,24 +180,23 @@ func (c *Context) FramebufferPixels(f Framebuffer, width, height int) ([]byte, e
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func (c *Context) bindTextureImpl(t Texture) {
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gl := c.gl
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gl.BindTexture(gl.TEXTURE_2D, t.(*js.Object))
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gl.Call("bindTexture", gl.Get("TEXTURE_2D"), t.(*js.Object))
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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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if !gl.IsTexture(t.(*js.Object)) {
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if !gl.Call("isTexture", t.(*js.Object)).Bool() {
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return
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}
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if c.lastTexture == t {
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c.lastTexture = nil
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}
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gl.DeleteTexture(t.(*js.Object))
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gl.Call("deleteTexture", t.(*js.Object))
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}
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func (c *Context) IsTexture(t Texture) bool {
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gl := c.gl
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b := gl.IsTexture(t.(*js.Object))
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return b
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return gl.Call("isTexture", t.(*js.Object)).Bool()
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}
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func (c *Context) TexSubImage2D(p []byte, x, y, width, height int) {
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@ -198,17 +204,16 @@ func (c *Context) TexSubImage2D(p []byte, x, y, width, height int) {
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// void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
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// GLsizei width, GLsizei height,
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// GLenum format, GLenum type, ArrayBufferView? pixels);
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gl.Call("texSubImage2D", gl.TEXTURE_2D, 0, x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, p)
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gl.Call("texSubImage2D", gl.Get("TEXTURE_2D"), 0, x, y, width, height, gl.Get("RGBA"), gl.Get("UNSIGNED_BYTE"), p)
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}
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func (c *Context) NewFramebuffer(t Texture) (Framebuffer, error) {
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gl := c.gl
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f := gl.CreateFramebuffer()
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f := gl.Call("createFramebuffer")
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c.bindFramebuffer(f)
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gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, t.(*js.Object), 0)
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s := gl.CheckFramebufferStatus(gl.FRAMEBUFFER)
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if s != gl.FRAMEBUFFER_COMPLETE {
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gl.Call("framebufferTexture2D", gl.Get("FRAMEBUFFER"), gl.Get("COLOR_ATTACHMENT0"), gl.Get("TEXTURE_2D"), t.(*js.Object), 0)
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if s := gl.Call("checkFramebufferStatus", gl.Get("FRAMEBUFFER")); s != gl.Get("FRAMEBUFFER_COMPLETE") {
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return nil, errors.New(fmt.Sprintf("opengl: creating framebuffer failed: %d", s))
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}
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@ -217,12 +222,12 @@ func (c *Context) NewFramebuffer(t Texture) (Framebuffer, error) {
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func (c *Context) setViewportImpl(width, height int) {
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gl := c.gl
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gl.Viewport(0, 0, width, height)
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gl.Call("viewport", 0, 0, width, height)
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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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if !gl.IsFramebuffer(f.(*js.Object)) {
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if !gl.Call("isFramebuffer", f.(*js.Object)).Bool() {
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return
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}
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// If a framebuffer to be deleted is bound, a newly bound framebuffer
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@ -233,21 +238,21 @@ func (c *Context) DeleteFramebuffer(f Framebuffer) {
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c.lastViewportWidth = 0
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c.lastViewportHeight = 0
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}
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gl.DeleteFramebuffer(f.(*js.Object))
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gl.Call("deleteFramebuffer", f.(*js.Object))
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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(int(shaderType))
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s := gl.Call("createShader", int(shaderType))
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if s == nil {
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return nil, fmt.Errorf("opengl: glCreateShader failed: shader type: %d", shaderType)
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}
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gl.ShaderSource(s, source)
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gl.CompileShader(s)
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gl.Call("shaderSource", s, source)
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gl.Call("compileShader", s)
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if !gl.GetShaderParameterb(s, gl.COMPILE_STATUS) {
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log := gl.GetShaderInfoLog(s)
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if !gl.Call("getShaderParameter", s, gl.Get("COMPILE_STATUS")).Bool() {
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log := gl.Call("getShaderInfoLog", s)
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return nil, fmt.Errorf("opengl: shader compile failed: %s", log)
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}
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return s, nil
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@ -255,12 +260,12 @@ func (c *Context) NewShader(shaderType ShaderType, source string) (Shader, error
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func (c *Context) DeleteShader(s Shader) {
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gl := c.gl
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gl.DeleteShader(s.(*js.Object))
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gl.Call("deleteShader", s.(*js.Object))
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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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p := gl.Call("createProgram")
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if p == nil {
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return nil, errors.New("opengl: glCreateProgram failed")
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}
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@ -268,10 +273,10 @@ func (c *Context) NewProgram(shaders []Shader) (Program, error) {
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c.lastProgramID++
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for _, shader := range shaders {
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gl.AttachShader(p, shader.(*js.Object))
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gl.Call("attachShader", p, shader.(*js.Object))
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}
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gl.LinkProgram(p)
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if !gl.GetProgramParameterb(p, gl.LINK_STATUS) {
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gl.Call("linkProgram", p)
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if !gl.Call("getProgramParameter", p, gl.Get("LINK_STATUS")).Bool() {
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return nil, errors.New("opengl: program error")
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}
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return p, nil
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@ -279,32 +284,32 @@ func (c *Context) NewProgram(shaders []Shader) (Program, error) {
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func (c *Context) UseProgram(p Program) {
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gl := c.gl
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gl.UseProgram(p.(*js.Object))
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gl.Call("useProgram", p.(*js.Object))
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}
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func (c *Context) DeleteProgram(p Program) {
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gl := c.gl
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if !gl.IsProgram(p.(*js.Object)) {
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if !gl.Call("isProgram", p.(*js.Object)).Bool() {
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return
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}
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gl.DeleteProgram(p.(*js.Object))
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gl.Call("deleteProgram", p.(*js.Object))
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}
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func (c *Context) getUniformLocationImpl(p Program, location string) uniformLocation {
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gl := c.gl
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return gl.GetUniformLocation(p.(*js.Object), location)
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return gl.Call("getUniformLocation", p.(*js.Object), location)
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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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l := c.locationCache.GetUniformLocation(c, p, location)
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gl.Uniform1i(l.(*js.Object), v)
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gl.Call("uniform1i", l.(*js.Object), v)
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}
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func (c *Context) UniformFloat(p Program, location string, v float32) {
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gl := c.gl
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l := c.locationCache.GetUniformLocation(c, p, location)
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gl.Uniform1f(l.(*js.Object), v)
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gl.Call("uniform1f", l.(*js.Object), v)
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}
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func (c *Context) UniformFloats(p Program, location string, v []float32) {
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@ -316,7 +321,7 @@ func (c *Context) UniformFloats(p Program, location string, v []float32) {
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case 4:
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gl.Call("uniform4fv", l.(*js.Object), v)
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case 16:
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gl.UniformMatrix4fv(l.(*js.Object), false, v)
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gl.Call("uniformMatrix4fv", l.(*js.Object), false, v)
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default:
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panic("not reached")
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}
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@ -324,76 +329,76 @@ func (c *Context) UniformFloats(p Program, location string, v []float32) {
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func (c *Context) getAttribLocationImpl(p Program, location string) attribLocation {
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gl := c.gl
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return attribLocation(gl.GetAttribLocation(p.(*js.Object), location))
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return attribLocation(gl.Call("getAttribLocation", p.(*js.Object), location).Int())
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}
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func (c *Context) VertexAttribPointer(p Program, location string, size int, dataType DataType, stride int, offset 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(int(l), size, int(dataType), false, stride, offset)
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gl.Call("vertexAttribPointer", int(l), size, int(dataType), false, stride, offset)
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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(int(l))
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gl.Call("enableVertexAttribArray", int(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(int(l))
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gl.Call("disableVertexAttribArray", int(l))
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}
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func (c *Context) NewArrayBuffer(size int) Buffer {
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gl := c.gl
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b := gl.CreateBuffer()
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gl.BindBuffer(int(ArrayBuffer), b)
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gl.BufferData(int(ArrayBuffer), size, int(DynamicDraw))
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b := gl.Call("createBuffer")
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gl.Call("bindBuffer", int(ArrayBuffer), b)
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gl.Call("bufferData", int(ArrayBuffer), size, int(DynamicDraw))
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return b
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}
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func (c *Context) NewElementArrayBuffer(indices []uint16) Buffer {
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gl := c.gl
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b := gl.CreateBuffer()
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gl.BindBuffer(int(ElementArrayBuffer), b)
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gl.BufferData(int(ElementArrayBuffer), indices, int(StaticDraw))
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b := gl.Call("createBuffer")
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gl.Call("bindBuffer", int(ElementArrayBuffer), b)
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gl.Call("bufferData", int(ElementArrayBuffer), indices, int(StaticDraw))
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return b
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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(gl.ELEMENT_ARRAY_BUFFER, b.(*js.Object))
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gl.Call("bindBuffer", gl.Get("ELEMENT_ARRAY_BUFFER"), b.(*js.Object))
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}
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func (c *Context) BufferSubData(bufferType BufferType, data []float32) {
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gl := c.gl
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gl.BufferSubData(int(bufferType), 0, data)
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gl.Call("bufferSubData", int(bufferType), 0, data)
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}
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func (c *Context) DeleteBuffer(b Buffer) {
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gl := c.gl
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gl.DeleteBuffer(b.(*js.Object))
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gl.Call("deleteBuffer", b.(*js.Object))
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}
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func (c *Context) DrawElements(mode Mode, len int, offsetInBytes int) {
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gl := c.gl
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gl.DrawElements(int(mode), len, gl.UNSIGNED_SHORT, offsetInBytes)
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gl.Call("drawElements", int(mode), len, gl.Get("UNSIGNED_SHORT"), offsetInBytes)
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}
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func (c *Context) maxTextureSizeImpl() int {
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gl := c.gl
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return gl.GetParameter(gl.MAX_TEXTURE_SIZE).Int()
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return gl.Call("getParameter", gl.Get("MAX_TEXTURE_SIZE")).Int()
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}
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func (c *Context) Flush() {
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gl := c.gl
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gl.Flush()
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gl.Call("flush")
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}
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func (c *Context) IsContextLost() bool {
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gl := c.gl
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return gl.IsContextLost()
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return gl.Call("isContextLost").Bool()
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}
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func (c *Context) RestoreContext() {
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