WIP: rust WebGL rendering

docs/emgui.d.ts

@@ -1,3 +0,0 @@
-/* tslint:disable */
-export function show_gui(arg0: string): string;
-

docs/emgui.js

@@ -1,102 +0,0 @@
-(function() {
-    var wasm;
-    const __exports = {};
-
-
-    let cachedTextEncoder = new TextEncoder('utf-8');
-
-    let cachegetUint8Memory = null;
-    function getUint8Memory() {
-        if (cachegetUint8Memory === null || cachegetUint8Memory.buffer !== wasm.memory.buffer) {
-            cachegetUint8Memory = new Uint8Array(wasm.memory.buffer);
-        }
-        return cachegetUint8Memory;
-    }
-
-    let WASM_VECTOR_LEN = 0;
-
-    function passStringToWasm(arg) {
-
-        const buf = cachedTextEncoder.encode(arg);
-        const ptr = wasm.__wbindgen_malloc(buf.length);
-        getUint8Memory().set(buf, ptr);
-        WASM_VECTOR_LEN = buf.length;
-        return ptr;
-    }
-
-    let cachedTextDecoder = new TextDecoder('utf-8');
-
-    function getStringFromWasm(ptr, len) {
-        return cachedTextDecoder.decode(getUint8Memory().subarray(ptr, ptr + len));
-    }
-
-    let cachedGlobalArgumentPtr = null;
-    function globalArgumentPtr() {
-        if (cachedGlobalArgumentPtr === null) {
-            cachedGlobalArgumentPtr = wasm.__wbindgen_global_argument_ptr();
-        }
-        return cachedGlobalArgumentPtr;
-    }
-
-    let cachegetUint32Memory = null;
-    function getUint32Memory() {
-        if (cachegetUint32Memory === null || cachegetUint32Memory.buffer !== wasm.memory.buffer) {
-            cachegetUint32Memory = new Uint32Array(wasm.memory.buffer);
-        }
-        return cachegetUint32Memory;
-    }
-    /**
-    * @param {string} arg0
-    * @returns {string}
-    */
-    __exports.show_gui = function(arg0) {
-        const ptr0 = passStringToWasm(arg0);
-        const len0 = WASM_VECTOR_LEN;
-        const retptr = globalArgumentPtr();
-        try {
-            wasm.show_gui(retptr, ptr0, len0);
-            const mem = getUint32Memory();
-            const rustptr = mem[retptr / 4];
-            const rustlen = mem[retptr / 4 + 1];
-
-            const realRet = getStringFromWasm(rustptr, rustlen).slice();
-            wasm.__wbindgen_free(rustptr, rustlen * 1);
-            return realRet;
-
-
-        } finally {
-            wasm.__wbindgen_free(ptr0, len0 * 1);
-
-        }
-
-    };
-
-    __exports.__wbindgen_throw = function(ptr, len) {
-        throw new Error(getStringFromWasm(ptr, len));
-    };
-
-    function init(path_or_module) {
-        let instantiation;
-        const imports = { './emgui': __exports };
-        if (path_or_module instanceof WebAssembly.Module) {
-            instantiation = WebAssembly.instantiate(path_or_module, imports)
-            .then(instance => {
-            return { instance, module: path_or_module }
-        });
-    } else {
-        const data = fetch(path_or_module);
-        if (typeof WebAssembly.instantiateStreaming === 'function') {
-            instantiation = WebAssembly.instantiateStreaming(data, imports);
-        } else {
-            instantiation = data
-            .then(response => response.arrayBuffer())
-            .then(buffer => WebAssembly.instantiate(buffer, imports));
-        }
-    }
-    return instantiation.then(({instance}) => {
-        wasm = init.wasm = instance.exports;
-
-    });
-};
-self.wasm_bindgen = Object.assign(init, __exports);
-})();

docs/emgui_wasm.js

@@ -0,0 +1,561 @@
+(function() {
+    var wasm;
+    const __exports = {};
+
+
+    let cachedTextEncoder = new TextEncoder('utf-8');
+
+    let cachegetUint8Memory = null;
+    function getUint8Memory() {
+        if (cachegetUint8Memory === null || cachegetUint8Memory.buffer !== wasm.memory.buffer) {
+            cachegetUint8Memory = new Uint8Array(wasm.memory.buffer);
+        }
+        return cachegetUint8Memory;
+    }
+
+    let WASM_VECTOR_LEN = 0;
+
+    function passStringToWasm(arg) {
+
+        const buf = cachedTextEncoder.encode(arg);
+        const ptr = wasm.__wbindgen_malloc(buf.length);
+        getUint8Memory().set(buf, ptr);
+        WASM_VECTOR_LEN = buf.length;
+        return ptr;
+    }
+
+    let cachedTextDecoder = new TextDecoder('utf-8');
+
+    function getStringFromWasm(ptr, len) {
+        return cachedTextDecoder.decode(getUint8Memory().subarray(ptr, ptr + len));
+    }
+
+    let cachedGlobalArgumentPtr = null;
+    function globalArgumentPtr() {
+        if (cachedGlobalArgumentPtr === null) {
+            cachedGlobalArgumentPtr = wasm.__wbindgen_global_argument_ptr();
+        }
+        return cachedGlobalArgumentPtr;
+    }
+
+    let cachegetUint32Memory = null;
+    function getUint32Memory() {
+        if (cachegetUint32Memory === null || cachegetUint32Memory.buffer !== wasm.memory.buffer) {
+            cachegetUint32Memory = new Uint32Array(wasm.memory.buffer);
+        }
+        return cachegetUint32Memory;
+    }
+    /**
+    * @param {string} arg0
+    * @returns {string}
+    */
+    __exports.show_gui = function(arg0) {
+        const ptr0 = passStringToWasm(arg0);
+        const len0 = WASM_VECTOR_LEN;
+        const retptr = globalArgumentPtr();
+        try {
+            wasm.show_gui(retptr, ptr0, len0);
+            const mem = getUint32Memory();
+            const rustptr = mem[retptr / 4];
+            const rustlen = mem[retptr / 4 + 1];
+
+            const realRet = getStringFromWasm(rustptr, rustlen).slice();
+            wasm.__wbindgen_free(rustptr, rustlen * 1);
+            return realRet;
+
+
+        } finally {
+            wasm.__wbindgen_free(ptr0, len0 * 1);
+
+        }
+
+    };
+
+    /**
+    * @param {string} arg0
+    * @returns {Painter}
+    */
+    __exports.new_webgl_painter = function(arg0) {
+        const ptr0 = passStringToWasm(arg0);
+        const len0 = WASM_VECTOR_LEN;
+        try {
+            return Painter.__wrap(wasm.new_webgl_painter(ptr0, len0));
+
+        } finally {
+            wasm.__wbindgen_free(ptr0, len0 * 1);
+
+        }
+
+    };
+
+    /**
+    * @param {Painter} arg0
+    * @param {string} arg1
+    * @returns {void}
+    */
+    __exports.paint_webgl = function(arg0, arg1) {
+        const ptr1 = passStringToWasm(arg1);
+        const len1 = WASM_VECTOR_LEN;
+        try {
+            return wasm.paint_webgl(arg0.ptr, ptr1, len1);
+
+        } finally {
+            wasm.__wbindgen_free(ptr1, len1 * 1);
+
+        }
+
+    };
+
+    const heap = new Array(32);
+
+    heap.fill(undefined);
+
+    heap.push(undefined, null, true, false);
+
+function getObject(idx) { return heap[idx]; }
+
+let heap_next = heap.length;
+
+function addHeapObject(obj) {
+    if (heap_next === heap.length) heap.push(heap.length + 1);
+    const idx = heap_next;
+    heap_next = heap[idx];
+
+    heap[idx] = obj;
+    return idx;
+}
+
+function isLikeNone(x) {
+    return x === undefined || x === null;
+}
+
+const __widl_f_get_element_by_id_Document_target = typeof Document === 'undefined' ? null : Document.prototype.getElementById || function() {
+    throw new Error(`wasm-bindgen: Document.getElementById does not exist`);
+};
+
+__exports.__widl_f_get_element_by_id_Document = function(arg0, arg1, arg2) {
+    let varg1 = getStringFromWasm(arg1, arg2);
+
+    const val = __widl_f_get_element_by_id_Document_target.call(getObject(arg0), varg1);
+    return isLikeNone(val) ? 0 : addHeapObject(val);
+
+};
+
+__exports.__widl_instanceof_HTMLCanvasElement = function(idx) {
+    return getObject(idx) instanceof HTMLCanvasElement ? 1 : 0;
+};
+
+const __widl_f_get_context_HTMLCanvasElement_target = typeof HTMLCanvasElement === 'undefined' ? null : HTMLCanvasElement.prototype.getContext || function() {
+    throw new Error(`wasm-bindgen: HTMLCanvasElement.getContext does not exist`);
+};
+
+__exports.__widl_f_get_context_HTMLCanvasElement = function(arg0, arg1, arg2, exnptr) {
+    let varg1 = getStringFromWasm(arg1, arg2);
+    try {
+
+        const val = __widl_f_get_context_HTMLCanvasElement_target.call(getObject(arg0), varg1);
+        return isLikeNone(val) ? 0 : addHeapObject(val);
+
+    } catch (e) {
+        const view = getUint32Memory();
+        view[exnptr / 4] = 1;
+        view[exnptr / 4 + 1] = addHeapObject(e);
+
+    }
+};
+
+function GetOwnOrInheritedPropertyDescriptor(obj, id) {
+    while (obj) {
+        let desc = Object.getOwnPropertyDescriptor(obj, id);
+        if (desc) return desc;
+        obj = Object.getPrototypeOf(obj);
+    }
+return {}
+}
+
+const __widl_f_width_HTMLCanvasElement_target = GetOwnOrInheritedPropertyDescriptor(typeof HTMLCanvasElement === 'undefined' ? null : HTMLCanvasElement.prototype, 'width').get || function() {
+    throw new Error(`wasm-bindgen: HTMLCanvasElement.width does not exist`);
+};
+
+__exports.__widl_f_width_HTMLCanvasElement = function(arg0) {
+    return __widl_f_width_HTMLCanvasElement_target.call(getObject(arg0));
+};
+
+const __widl_f_height_HTMLCanvasElement_target = GetOwnOrInheritedPropertyDescriptor(typeof HTMLCanvasElement === 'undefined' ? null : HTMLCanvasElement.prototype, 'height').get || function() {
+    throw new Error(`wasm-bindgen: HTMLCanvasElement.height does not exist`);
+};
+
+__exports.__widl_f_height_HTMLCanvasElement = function(arg0) {
+    return __widl_f_height_HTMLCanvasElement_target.call(getObject(arg0));
+};
+
+__exports.__widl_instanceof_WebGLRenderingContext = function(idx) {
+    return getObject(idx) instanceof WebGLRenderingContext ? 1 : 0;
+};
+
+const __widl_f_buffer_data_with_array_buffer_view_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.bufferData || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.bufferData does not exist`);
+};
+
+__exports.__widl_f_buffer_data_with_array_buffer_view_WebGLRenderingContext = function(arg0, arg1, arg2, arg3) {
+    __widl_f_buffer_data_with_array_buffer_view_WebGLRenderingContext_target.call(getObject(arg0), arg1, getObject(arg2), arg3);
+};
+
+const __widl_f_attach_shader_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.attachShader || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.attachShader does not exist`);
+};
+
+__exports.__widl_f_attach_shader_WebGLRenderingContext = function(arg0, arg1, arg2) {
+    __widl_f_attach_shader_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1), getObject(arg2));
+};
+
+const __widl_f_bind_buffer_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.bindBuffer || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.bindBuffer does not exist`);
+};
+
+__exports.__widl_f_bind_buffer_WebGLRenderingContext = function(arg0, arg1, arg2) {
+    __widl_f_bind_buffer_WebGLRenderingContext_target.call(getObject(arg0), arg1, getObject(arg2));
+};
+
+const __widl_f_blend_func_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.blendFunc || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.blendFunc does not exist`);
+};
+
+__exports.__widl_f_blend_func_WebGLRenderingContext = function(arg0, arg1, arg2) {
+    __widl_f_blend_func_WebGLRenderingContext_target.call(getObject(arg0), arg1, arg2);
+};
+
+const __widl_f_clear_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.clear || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.clear does not exist`);
+};
+
+__exports.__widl_f_clear_WebGLRenderingContext = function(arg0, arg1) {
+    __widl_f_clear_WebGLRenderingContext_target.call(getObject(arg0), arg1);
+};
+
+const __widl_f_clear_color_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.clearColor || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.clearColor does not exist`);
+};
+
+__exports.__widl_f_clear_color_WebGLRenderingContext = function(arg0, arg1, arg2, arg3, arg4) {
+    __widl_f_clear_color_WebGLRenderingContext_target.call(getObject(arg0), arg1, arg2, arg3, arg4);
+};
+
+const __widl_f_compile_shader_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.compileShader || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.compileShader does not exist`);
+};
+
+__exports.__widl_f_compile_shader_WebGLRenderingContext = function(arg0, arg1) {
+    __widl_f_compile_shader_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1));
+};
+
+const __widl_f_create_buffer_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.createBuffer || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.createBuffer does not exist`);
+};
+
+__exports.__widl_f_create_buffer_WebGLRenderingContext = function(arg0) {
+
+    const val = __widl_f_create_buffer_WebGLRenderingContext_target.call(getObject(arg0));
+    return isLikeNone(val) ? 0 : addHeapObject(val);
+
+};
+
+const __widl_f_create_program_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.createProgram || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.createProgram does not exist`);
+};
+
+__exports.__widl_f_create_program_WebGLRenderingContext = function(arg0) {
+
+    const val = __widl_f_create_program_WebGLRenderingContext_target.call(getObject(arg0));
+    return isLikeNone(val) ? 0 : addHeapObject(val);
+
+};
+
+const __widl_f_create_shader_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.createShader || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.createShader does not exist`);
+};
+
+__exports.__widl_f_create_shader_WebGLRenderingContext = function(arg0, arg1) {
+
+    const val = __widl_f_create_shader_WebGLRenderingContext_target.call(getObject(arg0), arg1);
+    return isLikeNone(val) ? 0 : addHeapObject(val);
+
+};
+
+const __widl_f_draw_elements_with_i32_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.drawElements || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.drawElements does not exist`);
+};
+
+__exports.__widl_f_draw_elements_with_i32_WebGLRenderingContext = function(arg0, arg1, arg2, arg3, arg4) {
+    __widl_f_draw_elements_with_i32_WebGLRenderingContext_target.call(getObject(arg0), arg1, arg2, arg3, arg4);
+};
+
+const __widl_f_enable_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.enable || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.enable does not exist`);
+};
+
+__exports.__widl_f_enable_WebGLRenderingContext = function(arg0, arg1) {
+    __widl_f_enable_WebGLRenderingContext_target.call(getObject(arg0), arg1);
+};
+
+const __widl_f_enable_vertex_attrib_array_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.enableVertexAttribArray || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.enableVertexAttribArray does not exist`);
+};
+
+__exports.__widl_f_enable_vertex_attrib_array_WebGLRenderingContext = function(arg0, arg1) {
+    __widl_f_enable_vertex_attrib_array_WebGLRenderingContext_target.call(getObject(arg0), arg1);
+};
+
+const __widl_f_get_attrib_location_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.getAttribLocation || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.getAttribLocation does not exist`);
+};
+
+__exports.__widl_f_get_attrib_location_WebGLRenderingContext = function(arg0, arg1, arg2, arg3) {
+    let varg2 = getStringFromWasm(arg2, arg3);
+    return __widl_f_get_attrib_location_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1), varg2);
+};
+
+const __widl_f_get_program_info_log_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.getProgramInfoLog || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.getProgramInfoLog does not exist`);
+};
+
+__exports.__widl_f_get_program_info_log_WebGLRenderingContext = function(ret, arg0, arg1) {
+    const val = __widl_f_get_program_info_log_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1));
+    const retptr = isLikeNone(val) ? [0, 0] : passStringToWasm(val);
+    const retlen = WASM_VECTOR_LEN;
+    const mem = getUint32Memory();
+    mem[ret / 4] = retptr;
+    mem[ret / 4 + 1] = retlen;
+
+};
+
+const __widl_f_get_program_parameter_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.getProgramParameter || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.getProgramParameter does not exist`);
+};
+
+__exports.__widl_f_get_program_parameter_WebGLRenderingContext = function(arg0, arg1, arg2) {
+    return addHeapObject(__widl_f_get_program_parameter_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1), arg2));
+};
+
+const __widl_f_get_shader_info_log_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.getShaderInfoLog || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.getShaderInfoLog does not exist`);
+};
+
+__exports.__widl_f_get_shader_info_log_WebGLRenderingContext = function(ret, arg0, arg1) {
+    const val = __widl_f_get_shader_info_log_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1));
+    const retptr = isLikeNone(val) ? [0, 0] : passStringToWasm(val);
+    const retlen = WASM_VECTOR_LEN;
+    const mem = getUint32Memory();
+    mem[ret / 4] = retptr;
+    mem[ret / 4 + 1] = retlen;
+
+};
+
+const __widl_f_get_shader_parameter_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.getShaderParameter || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.getShaderParameter does not exist`);
+};
+
+__exports.__widl_f_get_shader_parameter_WebGLRenderingContext = function(arg0, arg1, arg2) {
+    return addHeapObject(__widl_f_get_shader_parameter_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1), arg2));
+};
+
+const __widl_f_get_uniform_location_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.getUniformLocation || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.getUniformLocation does not exist`);
+};
+
+__exports.__widl_f_get_uniform_location_WebGLRenderingContext = function(arg0, arg1, arg2, arg3) {
+    let varg2 = getStringFromWasm(arg2, arg3);
+
+    const val = __widl_f_get_uniform_location_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1), varg2);
+    return isLikeNone(val) ? 0 : addHeapObject(val);
+
+};
+
+const __widl_f_link_program_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.linkProgram || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.linkProgram does not exist`);
+};
+
+__exports.__widl_f_link_program_WebGLRenderingContext = function(arg0, arg1) {
+    __widl_f_link_program_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1));
+};
+
+const __widl_f_shader_source_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.shaderSource || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.shaderSource does not exist`);
+};
+
+__exports.__widl_f_shader_source_WebGLRenderingContext = function(arg0, arg1, arg2, arg3) {
+    let varg2 = getStringFromWasm(arg2, arg3);
+    __widl_f_shader_source_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1), varg2);
+};
+
+const __widl_f_uniform2f_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.uniform2f || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.uniform2f does not exist`);
+};
+
+__exports.__widl_f_uniform2f_WebGLRenderingContext = function(arg0, arg1, arg2, arg3) {
+    __widl_f_uniform2f_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1), arg2, arg3);
+};
+
+const __widl_f_use_program_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.useProgram || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.useProgram does not exist`);
+};
+
+__exports.__widl_f_use_program_WebGLRenderingContext = function(arg0, arg1) {
+    __widl_f_use_program_WebGLRenderingContext_target.call(getObject(arg0), getObject(arg1));
+};
+
+const __widl_f_vertex_attrib_pointer_with_i32_WebGLRenderingContext_target = typeof WebGLRenderingContext === 'undefined' ? null : WebGLRenderingContext.prototype.vertexAttribPointer || function() {
+    throw new Error(`wasm-bindgen: WebGLRenderingContext.vertexAttribPointer does not exist`);
+};
+
+__exports.__widl_f_vertex_attrib_pointer_with_i32_WebGLRenderingContext = function(arg0, arg1, arg2, arg3, arg4, arg5, arg6) {
+    __widl_f_vertex_attrib_pointer_with_i32_WebGLRenderingContext_target.call(getObject(arg0), arg1, arg2, arg3, arg4 !== 0, arg5, arg6);
+};
+
+__exports.__widl_instanceof_Window = function(idx) {
+    return getObject(idx) instanceof Window ? 1 : 0;
+};
+
+__exports.__widl_f_document_Window = function(arg0) {
+
+    const val = getObject(arg0).document;
+    return isLikeNone(val) ? 0 : addHeapObject(val);
+
+};
+
+__exports.__wbg_new_c1b585153cd441ad = function(arg0) {
+    return addHeapObject(new Float32Array(getObject(arg0)));
+};
+
+__exports.__wbg_subarray_6bef35518c0617bd = function(arg0, arg1, arg2) {
+    return addHeapObject(getObject(arg0).subarray(arg1, arg2));
+};
+
+__exports.__wbg_newnoargs_6a80f84471205fc8 = function(arg0, arg1) {
+    let varg0 = getStringFromWasm(arg0, arg1);
+    return addHeapObject(new Function(varg0));
+};
+
+__exports.__wbg_call_582b20dfcad7fee4 = function(arg0, arg1, exnptr) {
+    try {
+        return addHeapObject(getObject(arg0).call(getObject(arg1)));
+    } catch (e) {
+        const view = getUint32Memory();
+        view[exnptr / 4] = 1;
+        view[exnptr / 4 + 1] = addHeapObject(e);
+
+    }
+};
+
+__exports.__wbg_new_b192e0932f97e870 = function(arg0) {
+    return addHeapObject(new Int16Array(getObject(arg0)));
+};
+
+__exports.__wbg_subarray_46088290ce2ce733 = function(arg0, arg1, arg2) {
+    return addHeapObject(getObject(arg0).subarray(arg1, arg2));
+};
+
+__exports.__wbg_new_bc68e7aae4d4f791 = function(arg0) {
+    return addHeapObject(new Uint8Array(getObject(arg0)));
+};
+
+__exports.__wbg_subarray_705096b76e15e94e = function(arg0, arg1, arg2) {
+    return addHeapObject(getObject(arg0).subarray(arg1, arg2));
+};
+
+__exports.__wbg_instanceof_Memory_d223615e29613829 = function(idx) {
+    return getObject(idx) instanceof WebAssembly.Memory ? 1 : 0;
+};
+
+__exports.__wbg_buffer_0413d5edaa0ff323 = function(arg0) {
+    return addHeapObject(getObject(arg0).buffer);
+};
+
+function freePainter(ptr) {
+
+    wasm.__wbg_painter_free(ptr);
+}
+/**
+*/
+class Painter {
+
+    static __wrap(ptr) {
+        const obj = Object.create(Painter.prototype);
+        obj.ptr = ptr;
+
+        return obj;
+    }
+
+    free() {
+        const ptr = this.ptr;
+        this.ptr = 0;
+        freePainter(ptr);
+    }
+
+}
+__exports.Painter = Painter;
+
+__exports.__wbindgen_object_clone_ref = function(idx) {
+    return addHeapObject(getObject(idx));
+};
+
+function dropObject(idx) {
+    if (idx < 36) return;
+    heap[idx] = heap_next;
+    heap_next = idx;
+}
+
+__exports.__wbindgen_object_drop_ref = function(i) { dropObject(i); };
+
+__exports.__wbindgen_string_new = function(p, l) {
+    return addHeapObject(getStringFromWasm(p, l));
+};
+
+__exports.__wbindgen_boolean_get = function(i) {
+    let v = getObject(i);
+    if (typeof(v) === 'boolean') {
+        return v ? 1 : 0;
+    } else {
+        return 2;
+    }
+};
+
+__exports.__wbindgen_memory = function() { return addHeapObject(wasm.memory); };
+
+function takeObject(idx) {
+    const ret = getObject(idx);
+    dropObject(idx);
+    return ret;
+}
+
+__exports.__wbindgen_rethrow = function(idx) { throw takeObject(idx); };
+
+__exports.__wbindgen_throw = function(ptr, len) {
+    throw new Error(getStringFromWasm(ptr, len));
+};
+
+function init(path_or_module) {
+    let instantiation;
+    const imports = { './emgui_wasm': __exports };
+    if (path_or_module instanceof WebAssembly.Module) {
+        instantiation = WebAssembly.instantiate(path_or_module, imports)
+        .then(instance => {
+        return { instance, module: path_or_module }
+    });
+} else {
+    const data = fetch(path_or_module);
+    if (typeof WebAssembly.instantiateStreaming === 'function') {
+        instantiation = WebAssembly.instantiateStreaming(data, imports);
+    } else {
+        instantiation = data
+        .then(response => response.arrayBuffer())
+        .then(buffer => WebAssembly.instantiate(buffer, imports));
+    }
+}
+return instantiation.then(({instance}) => {
+    wasm = init.wasm = instance.exports;
+
+});
+};
+self.wasm_bindgen = Object.assign(init, __exports);
+})();

docs/frontend.js

@@ -1,4 +1,6 @@
-function styleFromColor(color) {
+// ----------------------------------------------------------------------------
+// Canvas painting:
+function style_from_color(color) {
     return "rgba(" + color.r + ", " + color.g + ", " + color.b + ", " + color.a / 255.0 + ")";
 }
 function paint_command(canvas, cmd) {
@@ -9,17 +11,17 @@ function paint_command(canvas, cmd) {
             ctx.beginPath();
             ctx.arc(cmd.center.x, cmd.center.y, cmd.radius, 0, 2 * Math.PI, false);
             if (cmd.fill_color) {
-                ctx.fillStyle = styleFromColor(cmd.fill_color);
+                ctx.fillStyle = style_from_color(cmd.fill_color);
                 ctx.fill();
             }
             if (cmd.outline) {
                 ctx.lineWidth = cmd.outline.width;
-                ctx.strokeStyle = styleFromColor(cmd.outline.color);
+                ctx.strokeStyle = style_from_color(cmd.outline.color);
                 ctx.stroke();
             }
             return;
         case "clear":
-            ctx.fillStyle = styleFromColor(cmd.fill_color);
+            ctx.fillStyle = style_from_color(cmd.fill_color);
             ctx.clearRect(0, 0, canvas.width, canvas.height);
             return;
         case "line":
@@ -30,7 +32,7 @@ function paint_command(canvas, cmd) {
                 ctx.lineTo(point.x, point.y);
             }
             ctx.lineWidth = cmd.width;
-            ctx.strokeStyle = styleFromColor(cmd.color);
+            ctx.strokeStyle = style_from_color(cmd.color);
             ctx.stroke();
             return;
         case "rect":
@@ -51,17 +53,17 @@ function paint_command(canvas, cmd) {
             ctx.quadraticCurveTo(x, y, x + r, y);
             ctx.closePath();
             if (cmd.fill_color) {
-                ctx.fillStyle = styleFromColor(cmd.fill_color);
+                ctx.fillStyle = style_from_color(cmd.fill_color);
                 ctx.fill();
             }
             if (cmd.outline) {
                 ctx.lineWidth = cmd.outline.width;
-                ctx.strokeStyle = styleFromColor(cmd.outline.color);
+                ctx.strokeStyle = style_from_color(cmd.outline.color);
                 ctx.stroke();
             }
             return;
         case "text":
-            ctx.fillStyle = styleFromColor(cmd.fill_color);
+            ctx.fillStyle = style_from_color(cmd.fill_color);
             ctx.font = cmd.font_size + "px " + cmd.font_name;
             ctx.textBaseline = "middle";
             ctx.fillText(cmd.text, cmd.pos.x, cmd.pos.y);
@@ -75,7 +77,7 @@ function wasm_loaded() {
 }
 // here we tell bindgen the path to the wasm file so it can start
 // initialization and return to us a promise when it's done
-wasm_bindgen("./emgui_bg.wasm")
+wasm_bindgen("./emgui_wasm_bg.wasm")
     .then(wasm_loaded)["catch"](console.error);
 function rust_gui(input) {
     return JSON.parse(wasm_bindgen.show_gui(JSON.stringify(input)));
@@ -96,27 +98,45 @@ function js_gui(input) {
     });
     return commands;
 }
+var WEB_GL = true;
+var g_webgl_painter = null;
 function paint_gui(canvas, input) {
-    var commands = rust_gui(input);
-    commands.unshift({
-        fill_color: { r: 0, g: 0, b: 0, a: 0 },
-        kind: "clear"
-    });
-    for (var _i = 0, commands_1 = commands; _i < commands_1.length; _i++) {
-        var cmd = commands_1[_i];
-        paint_command(canvas, cmd);
+    if (WEB_GL) {
+        if (g_webgl_painter === null) {
+            g_webgl_painter = wasm_bindgen.new_webgl_painter("canvas");
+        }
+        wasm_bindgen.paint_webgl(g_webgl_painter, JSON.stringify(input));
+    }
+    else {
+        var commands = rust_gui(input);
+        for (var _i = 0, commands_1 = commands; _i < commands_1.length; _i++) {
+            var cmd = commands_1[_i];
+            var commands_2 = rust_gui(input);
+            commands_2.unshift({
+                fill_color: { r: 0, g: 0, b: 0, a: 0 },
+                kind: "clear"
+            });
+            paint_command(canvas, cmd);
+        }
     }
 }
 // ----------------------------------------------------------------------------
 var g_mouse_pos = { x: -1000.0, y: -1000.0 };
 var g_mouse_down = false;
+function auto_resize_canvas(canvas) {
+    if (WEB_GL) {
+        canvas.setAttribute("width", window.innerWidth);
+        canvas.setAttribute("height", window.innerHeight);
+    }
+    else {
+        var pixels_per_point = window.devicePixelRatio || 1;
+        var ctx = canvas.getContext("2d");
+        ctx.scale(pixels_per_point, pixels_per_point);
+        canvas.setAttribute("width", window.innerWidth * pixels_per_point);
+        canvas.setAttribute("height", window.innerHeight * pixels_per_point);
+    }
+}
 function get_input(canvas) {
-    var pixels_per_point = window.devicePixelRatio || 1;
-    var ctx = canvas.getContext("2d");
-    ctx.scale(pixels_per_point, pixels_per_point);
-    // Resize based on screen size:
-    canvas.setAttribute("width", window.innerWidth * pixels_per_point);
-    canvas.setAttribute("height", window.innerHeight * pixels_per_point);
     return {
         mouse_down: g_mouse_down,
         mouse_pos: g_mouse_pos,
@@ -133,6 +153,7 @@ function mouse_pos_from_event(canvas, event) {
 function initialize() {
     console.log("window.devicePixelRatio: " + window.devicePixelRatio);
     var canvas = document.getElementById("canvas");
+    auto_resize_canvas(canvas);
     var repaint = function () { return paint_gui(canvas, get_input(canvas)); };
     canvas.addEventListener("mousemove", function (event) {
         g_mouse_pos = mouse_pos_from_event(canvas, event);

docs/frontend.ts

@@ -60,7 +60,10 @@ interface Text {
 
 type PaintCmd = Circle | Clear | Line | Rect | Text;
 
-function styleFromColor(color: Color): string {
+// ----------------------------------------------------------------------------
+// Canvas painting:
+
+function style_from_color(color: Color): string {
   return `rgba(${color.r}, ${color.g}, ${color.b}, ${color.a / 255.0})`;
 }
 
@@ -74,18 +77,18 @@ function paint_command(canvas, cmd: PaintCmd) {
       ctx.beginPath();
       ctx.arc(cmd.center.x, cmd.center.y, cmd.radius, 0, 2 * Math.PI, false);
       if (cmd.fill_color) {
-        ctx.fillStyle = styleFromColor(cmd.fill_color);
+        ctx.fillStyle = style_from_color(cmd.fill_color);
         ctx.fill();
       }
       if (cmd.outline) {
         ctx.lineWidth = cmd.outline.width;
-        ctx.strokeStyle = styleFromColor(cmd.outline.color);
+        ctx.strokeStyle = style_from_color(cmd.outline.color);
         ctx.stroke();
       }
       return;
 
     case "clear":
-      ctx.fillStyle = styleFromColor(cmd.fill_color);
+      ctx.fillStyle = style_from_color(cmd.fill_color);
       ctx.clearRect(0, 0, canvas.width, canvas.height);
       return;
 
@@ -96,7 +99,7 @@ function paint_command(canvas, cmd: PaintCmd) {
         ctx.lineTo(point.x, point.y);
       }
       ctx.lineWidth = cmd.width;
-      ctx.strokeStyle = styleFromColor(cmd.color);
+      ctx.strokeStyle = style_from_color(cmd.color);
       ctx.stroke();
       return;
 
@@ -118,18 +121,18 @@ function paint_command(canvas, cmd: PaintCmd) {
       ctx.quadraticCurveTo(x, y, x + r, y);
       ctx.closePath();
       if (cmd.fill_color) {
-        ctx.fillStyle = styleFromColor(cmd.fill_color);
+        ctx.fillStyle = style_from_color(cmd.fill_color);
         ctx.fill();
       }
       if (cmd.outline) {
         ctx.lineWidth = cmd.outline.width;
-        ctx.strokeStyle = styleFromColor(cmd.outline.color);
+        ctx.strokeStyle = style_from_color(cmd.outline.color);
         ctx.stroke();
       }
       return;
 
     case "text":
-      ctx.fillStyle = styleFromColor(cmd.fill_color);
+      ctx.fillStyle = style_from_color(cmd.fill_color);
       ctx.font = `${cmd.font_size}px ${cmd.font_name}`;
       ctx.textBaseline = "middle";
       ctx.fillText(cmd.text, cmd.pos.x, cmd.pos.y);
@@ -164,7 +167,7 @@ function wasm_loaded() {
 
 // here we tell bindgen the path to the wasm file so it can start
 // initialization and return to us a promise when it's done
-wasm_bindgen("./emgui_bg.wasm")
+wasm_bindgen("./emgui_wasm_bg.wasm")
   .then(wasm_loaded)
   .catch(console.error);
 
@@ -193,15 +196,26 @@ function js_gui(input: RawInput): PaintCmd[] {
   return commands;
 }
 
-function paint_gui(canvas, input: RawInput) {
-  const commands = rust_gui(input);
-  commands.unshift({
-    fill_color: {r: 0, g: 0, b: 0, a: 0},
-    kind: "clear",
-  });
+const WEB_GL = true;
+let g_webgl_painter = null;
 
-  for (const cmd of commands) {
-    paint_command(canvas, cmd);
+function paint_gui(canvas, input: RawInput) {
+  if (WEB_GL) {
+    if (g_webgl_painter === null) {
+      g_webgl_painter = wasm_bindgen.new_webgl_painter("canvas");
+    }
+    wasm_bindgen.paint_webgl(g_webgl_painter, JSON.stringify(input));
+  } else {
+    let commands = rust_gui(input);
+    for (const cmd of commands) {
+      const commands = rust_gui(input);
+      commands.unshift({
+        fill_color: { r: 0, g: 0, b: 0, a: 0 },
+        kind: "clear",
+      });
+
+      paint_command(canvas, cmd);
+    }
   }
 }
 
@@ -210,16 +224,22 @@ function paint_gui(canvas, input: RawInput) {
 let g_mouse_pos = { x: -1000.0, y: -1000.0 };
 let g_mouse_down = false;
 
+function auto_resize_canvas(canvas) {
+  if (WEB_GL) {
+    canvas.setAttribute("width", window.innerWidth);
+    canvas.setAttribute("height", window.innerHeight);
+  } else {
+    const pixels_per_point = window.devicePixelRatio || 1;
+
+    const ctx = canvas.getContext("2d");
+    ctx.scale(pixels_per_point, pixels_per_point);
+
+    canvas.setAttribute("width", window.innerWidth * pixels_per_point);
+    canvas.setAttribute("height", window.innerHeight * pixels_per_point);
+  }
+}
+
 function get_input(canvas): RawInput {
-  const pixels_per_point = window.devicePixelRatio || 1;
-
-  const ctx = canvas.getContext("2d");
-  ctx.scale(pixels_per_point, pixels_per_point);
-
-  // Resize based on screen size:
-  canvas.setAttribute("width", window.innerWidth * pixels_per_point);
-  canvas.setAttribute("height", window.innerHeight * pixels_per_point);
-
   return {
     mouse_down: g_mouse_down,
     mouse_pos: g_mouse_pos,
@@ -239,49 +259,38 @@ function initialize() {
   console.log(`window.devicePixelRatio: ${window.devicePixelRatio}`);
 
   const canvas = document.getElementById("canvas");
+  auto_resize_canvas(canvas);
   const repaint = () => paint_gui(canvas, get_input(canvas));
 
-  canvas.addEventListener(
-    "mousemove",
-    (event) => {
-      g_mouse_pos = mouse_pos_from_event(canvas, event);
-      repaint();
-      event.stopPropagation();
-      event.preventDefault();
-    },
-  );
+  canvas.addEventListener("mousemove", event => {
+    g_mouse_pos = mouse_pos_from_event(canvas, event);
+    repaint();
+    event.stopPropagation();
+    event.preventDefault();
+  });
 
-  canvas.addEventListener(
-    "mouseleave",
-    (event) => {
-      g_mouse_pos = { x: -1000.0, y: -1000.0 };
-      repaint();
-      event.stopPropagation();
-      event.preventDefault();
-    },
-  );
+  canvas.addEventListener("mouseleave", event => {
+    g_mouse_pos = { x: -1000.0, y: -1000.0 };
+    repaint();
+    event.stopPropagation();
+    event.preventDefault();
+  });
 
-  canvas.addEventListener(
-    "mousedown",
-    (event) => {
-      g_mouse_pos = mouse_pos_from_event(canvas, event);
-      g_mouse_down = true;
-      repaint();
-      event.stopPropagation();
-      event.preventDefault();
-    },
-  );
+  canvas.addEventListener("mousedown", event => {
+    g_mouse_pos = mouse_pos_from_event(canvas, event);
+    g_mouse_down = true;
+    repaint();
+    event.stopPropagation();
+    event.preventDefault();
+  });
 
-  canvas.addEventListener(
-    "mouseup",
-    (event) => {
-      g_mouse_pos = mouse_pos_from_event(canvas, event);
-      g_mouse_down = false;
-      repaint();
-      event.stopPropagation();
-      event.preventDefault();
-    },
-  );
+  canvas.addEventListener("mouseup", event => {
+    g_mouse_pos = mouse_pos_from_event(canvas, event);
+    g_mouse_down = false;
+    repaint();
+    event.stopPropagation();
+    event.preventDefault();
+  });
 
   window.addEventListener("load", repaint);
   window.addEventListener("pagehide", repaint);

docs/index.html

@@ -32,7 +32,7 @@
     </script>
 
     <!-- this is the JS generated by the `wasm-bindgen` CLI tool -->
-    <script src="emgui.js"></script>
+    <script src="emgui_wasm.js"></script>
 
     <script src="frontend.js" type="module"></script>