// Copyright 2021 The Ebiten Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package opengl import ( "syscall/js" ) type gl struct { activeTexture js.Value attachShader js.Value bindAttribLocation js.Value bindBuffer js.Value bindFramebuffer js.Value bindRenderbuffer js.Value bindTexture js.Value blendEquationSeparate js.Value blendFuncSeparate js.Value bufferData js.Value bufferSubData js.Value checkFramebufferStatus js.Value clear js.Value colorMask js.Value compileShader js.Value createBuffer js.Value createFramebuffer js.Value createProgram js.Value createRenderbuffer js.Value createShader js.Value createTexture js.Value deleteBuffer js.Value deleteFramebuffer js.Value deleteProgram js.Value deleteRenderbuffer js.Value deleteShader js.Value deleteTexture js.Value disable js.Value disableVertexAttribArray js.Value drawElements js.Value enable js.Value enableVertexAttribArray js.Value framebufferRenderbuffer js.Value framebufferTexture2D js.Value flush js.Value getExtension js.Value getParameter js.Value getProgramInfoLog js.Value getProgramParameter js.Value getShaderInfoLog js.Value getShaderParameter js.Value getUniformLocation js.Value isContextLost js.Value isFramebuffer js.Value isProgram js.Value isRenderbuffer js.Value isTexture js.Value linkProgram js.Value pixelStorei js.Value readPixels js.Value renderbufferStorage js.Value scissor js.Value shaderSource js.Value stencilFunc js.Value stencilMask js.Value stencilOp js.Value texImage2D js.Value texSubImage2D js.Value texParameteri js.Value uniform1fv js.Value uniform1i js.Value uniform1iv js.Value uniform2fv js.Value uniform3fv js.Value uniform4fv js.Value uniformMatrix2fv js.Value uniformMatrix3fv js.Value uniformMatrix4fv js.Value useProgram js.Value vertexAttribPointer js.Value viewport js.Value } func (c *context) newGL(v js.Value) *gl { // Passing a Go string to the JS world is expensive. This causes conversion to UTF-16 (#1438). // In order to reduce the cost when calling functions, create the function objects by bind and use them. g := &gl{ activeTexture: v.Get("activeTexture").Call("bind", v), attachShader: v.Get("attachShader").Call("bind", v), bindAttribLocation: v.Get("bindAttribLocation").Call("bind", v), bindBuffer: v.Get("bindBuffer").Call("bind", v), bindFramebuffer: v.Get("bindFramebuffer").Call("bind", v), bindRenderbuffer: v.Get("bindRenderbuffer").Call("bind", v), bindTexture: v.Get("bindTexture").Call("bind", v), blendEquationSeparate: v.Get("blendEquationSeparate").Call("bind", v), blendFuncSeparate: v.Get("blendFuncSeparate").Call("bind", v), bufferData: v.Get("bufferData").Call("bind", v), bufferSubData: v.Get("bufferSubData").Call("bind", v), checkFramebufferStatus: v.Get("checkFramebufferStatus").Call("bind", v), clear: v.Get("clear").Call("bind", v), colorMask: v.Get("colorMask").Call("bind", v), compileShader: v.Get("compileShader").Call("bind", v), createBuffer: v.Get("createBuffer").Call("bind", v), createFramebuffer: v.Get("createFramebuffer").Call("bind", v), createProgram: v.Get("createProgram").Call("bind", v), createRenderbuffer: v.Get("createRenderbuffer").Call("bind", v), createShader: v.Get("createShader").Call("bind", v), createTexture: v.Get("createTexture").Call("bind", v), deleteBuffer: v.Get("deleteBuffer").Call("bind", v), deleteFramebuffer: v.Get("deleteFramebuffer").Call("bind", v), deleteProgram: v.Get("deleteProgram").Call("bind", v), deleteRenderbuffer: v.Get("deleteRenderbuffer").Call("bind", v), deleteShader: v.Get("deleteShader").Call("bind", v), deleteTexture: v.Get("deleteTexture").Call("bind", v), disable: v.Get("disable").Call("bind", v), disableVertexAttribArray: v.Get("disableVertexAttribArray").Call("bind", v), drawElements: v.Get("drawElements").Call("bind", v), enable: v.Get("enable").Call("bind", v), enableVertexAttribArray: v.Get("enableVertexAttribArray").Call("bind", v), framebufferRenderbuffer: v.Get("framebufferRenderbuffer").Call("bind", v), framebufferTexture2D: v.Get("framebufferTexture2D").Call("bind", v), flush: v.Get("flush").Call("bind", v), getParameter: v.Get("getParameter").Call("bind", v), getProgramInfoLog: v.Get("getProgramInfoLog").Call("bind", v), getProgramParameter: v.Get("getProgramParameter").Call("bind", v), getShaderInfoLog: v.Get("getShaderInfoLog").Call("bind", v), getShaderParameter: v.Get("getShaderParameter").Call("bind", v), getUniformLocation: v.Get("getUniformLocation").Call("bind", v), isContextLost: v.Get("isContextLost").Call("bind", v), isFramebuffer: v.Get("isFramebuffer").Call("bind", v), isProgram: v.Get("isProgram").Call("bind", v), isRenderbuffer: v.Get("isRenderbuffer").Call("bind", v), isTexture: v.Get("isTexture").Call("bind", v), linkProgram: v.Get("linkProgram").Call("bind", v), pixelStorei: v.Get("pixelStorei").Call("bind", v), readPixels: v.Get("readPixels").Call("bind", v), renderbufferStorage: v.Get("renderbufferStorage").Call("bind", v), scissor: v.Get("scissor").Call("bind", v), shaderSource: v.Get("shaderSource").Call("bind", v), stencilFunc: v.Get("stencilFunc").Call("bind", v), stencilMask: v.Get("stencilMask").Call("bind", v), stencilOp: v.Get("stencilOp").Call("bind", v), texImage2D: v.Get("texImage2D").Call("bind", v), texSubImage2D: v.Get("texSubImage2D").Call("bind", v), texParameteri: v.Get("texParameteri").Call("bind", v), uniform1fv: v.Get("uniform1fv").Call("bind", v), uniform1i: v.Get("uniform1i").Call("bind", v), uniform1iv: v.Get("uniform1iv").Call("bind", v), uniform2fv: v.Get("uniform2fv").Call("bind", v), uniform3fv: v.Get("uniform3fv").Call("bind", v), uniform4fv: v.Get("uniform4fv").Call("bind", v), uniformMatrix2fv: v.Get("uniformMatrix2fv").Call("bind", v), uniformMatrix3fv: v.Get("uniformMatrix3fv").Call("bind", v), uniformMatrix4fv: v.Get("uniformMatrix4fv").Call("bind", v), useProgram: v.Get("useProgram").Call("bind", v), vertexAttribPointer: v.Get("vertexAttribPointer").Call("bind", v), viewport: v.Get("viewport").Call("bind", v), } if !c.usesWebGL2() { g.getExtension = v.Get("getExtension").Call("bind", v) } return g }