Refactored OpenGL embedder that works on Android, Mac or Linux.

runtime/embedders/openglui/common/gl.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library android_extension;
+
+// The simplest way to call native code: top-level functions.
+int systemRand() native "SystemRand";
+void systemSrand(int seed) native "SystemSrand";
+void log(String what) native "Log";
+
+// EGL functions.
+void glSwapBuffers() native "SwapBuffers";
+
+// GL functions.
+void glAttachShader(int program, int shader) native "GLAttachShader";
+void glBindBuffer(int target, int buffer) native "GLBindBuffer";
+void glBufferData(int target, List data, int usage) native "GLBufferData";
+void glClearColor(num r, num g, num b, num alpha) native "GLClearColor";
+void glClearDepth(num depth) native "GLClearDepth";
+void glClear(int mask) native "GLClear";
+void glCompileShader(int shader) native "GLCompileShader";
+int glCreateBuffer() native "GLCreateBuffer";
+int glCreateProgram() native "GLCreateProgram";
+int glCreateShader(int shaderType) native "GLCreateShader";
+void glDrawArrays(int mode, int first, int count) native "GLDrawArrays";
+void glEnableVertexAttribArray(int index) native "GLEnableVertexAttribArray";
+int glGetAttribLocation(int program, String name) native "GLGetAttribLocation";
+int glGetError() native "GLGetError";
+int glGetProgramParameter(int program, int param)
+    native "GLGetProgramParameter";
+int glGetShaderParameter(int shader, int param) native "GLGetShaderParameter";
+int glGetUniformLocation(int program, String name)
+    native "GLGetUniformLocation";
+void glLinkProgram(int program) native "GLLinkProgram";
+void glShaderSource(int shader, String source) native "GLShaderSource";
+void glUniform1f(int location, double v0) native "GLUniform1f";
+void glUniform2f(int location, double v0, double v1) native "GLUniform2f";
+void glUniform3f(int location, double v0, double v1, double v2)
+    native "GLUniform3f";
+void glUniform4f(int location, double v0, double v1, double v2, double v3)
+    native "GLUniform4f";
+void glUniform1i(int location, int v0) native "GLUniform1i";
+void glUniform2i(int location, int v0, int v1) native "GLUniform2i";
+void glUniform3i(int location, int v0, int v1, int v2) native "GLUniform3i";
+void glUniform4i(int location, int v0, int v1, int v2, int v3)
+    native "GLUniform4i";
+void glUniform1fv(int location, List values) native "GLUniform1fv";
+void glUniform2fv(int location, List values) native "GLUniform2fv";
+void glUniform3fv(int location, List values) native "GLUniform3fv";
+void glUniform4fv(int location, List values) native "GLUniform4fv";
+void glUniform1iv(int location, List values) native "GLUniform1iv";
+void glUniform2iv(int location, List values) native "GLUniform2iv";
+void glUniform3iv(int location, List values) native "GLUniform3iv";
+void glUniform4iv(int location, List values) native "GLUniform4iv";
+void glUseProgram(int program) native "GLUseProgram";
+void glVertexAttribPointer(int index, int size, int type, bool normalized,
+    int stride, int pointer) native "GLVertexAttribPointer";
+void glViewport(int x, int y, int width, int height) native "GLViewport";
+
+int glArrayBuffer() native "GLArrayBuffer";
+int glColorBufferBit() native "GLColorBufferBit";
+int glCompileStatus() native "GLCompileStatus";
+int glDeleteStatus() native "GLDeleteStatus";
+int glDepthBufferBit() native "GLDepthBufferBit";
+int glFloat() native "GLFloat";
+int glFragmentShader() native "GLFragmentShader";
+int glLinkStatus() native "GLLinkStatus";
+int glStaticDraw() native "GLStaticDraw";
+int glTriangleStrip() native "GLTriangleStrip";
+int glTriangles() native "GLTriangles";
+int glTrue() native "GLTrue";
+int glValidateStatus() native "GLValidateStatus";
+int glVertexShader() native "GLVertexShader";
+
+String glGetShaderInfoLog(int shader) native "GLGetShaderInfoLog";
+String glGetProgramInfoLog(int program) native "GLGetProgramInfoLog";
+
+class WebGLRenderingContext {
+  WebGLRenderingContext();
+
+  static get ARRAY_BUFFER => glArrayBuffer();
+  static get COLOR_BUFFER_BIT => glColorBufferBit();
+  static get COMPILE_STATUS => glCompileStatus();
+  static get DELETE_STATUS => glDeleteStatus();
+  static get DEPTH_BUFFER_BIT => glDepthBufferBit();
+  static get FLOAT => glFloat();
+  static get FRAGMENT_SHADER => glFragmentShader();
+  static get LINK_STATUS => glLinkStatus();
+  static get STATIC_DRAW => glStaticDraw();
+  static get TRUE => glTrue();
+  static get TRIANGLE_STRIP => glTriangleStrip();
+  static get TRIANGLES => glTriangles();
+  static get VALIDATE_STATUS => glValidateStatus();
+  static get VERTEX_SHADER => glVertexShader();
+
+  attachShader(program, shader) => glAttachShader(program, shader);
+  bindBuffer(target, buffer) => glBindBuffer(target, buffer);
+  bufferData(target, data, usage) => glBufferData(target, data, usage);
+  clearColor(r, g, b, alpha) => glClearColor(r, g, b, alpha);
+  clearDepth(depth) => glClearDepth(depth);
+  clear(mask) => glClear(mask);
+  compileShader(shader) => glCompileShader(shader);
+  createBuffer() => glCreateBuffer();
+  createProgram() => glCreateProgram();
+  createShader(shaderType) => glCreateShader(shaderType);
+  drawArrays(mode, first, count) => glDrawArrays(mode, first, count);
+  enableVertexAttribArray(index) => glEnableVertexAttribArray(index);
+  getAttribLocation(program, name) => glGetAttribLocation(program, name);
+  getError() => glGetError();
+  getProgramParameter(program, name) {
+    var rtn = glGetProgramParameter(program, name);
+    if (name == DELETE_STATUS ||
+        name == LINK_STATUS ||
+        name == VALIDATE_STATUS) {
+      return (rtn == 0) ? false : true;
+    }
+    return rtn;
+  }
+  getShaderParameter(shader, name) {
+    var rtn = glGetShaderParameter(shader, name);
+    if (name == DELETE_STATUS || name == COMPILE_STATUS) {
+      return (rtn == 0) ? false : true;
+    }
+    return rtn;
+  }
+  getUniformLocation(program, name) => glGetUniformLocation(program, name);
+  linkProgram(program) => glLinkProgram(program);
+  shaderSource(shader, source) => glShaderSource(shader, source);
+  uniform1f(location, v0) => glUniform1f(location, v0);
+  uniform2f(location, v0, v1) => glUniform2f(location, v0, v1);
+  uniform3f(location, v0, v1, v2) => glUniform3f(location, v0, v1, v2);
+  uniform4f(location, v0, v1, v2, v3) => glUniform4f(location, v0, v1, v2, v3);
+  uniform1i(location, v0) => glUniform1i(location, v0);
+  uniform2i(location, v0, v1) => glUniform2i(location, v0, v1);
+  uniform3i(location, v0, v1, v2) => glUniform3i(location, v0, v1, v2);
+  uniform4i(location, v0, v1, v2, v3) => glUniform4i(location, v0, v1, v2, v3);
+  uniform1fv(location, values) => glUniform1fv(location, values);
+  uniform2fv(location, values) => glUniform2fv(location, values);
+  uniform3fv(location, values) => glUniform3fv(location, values);
+  uniform4fv(location, values) => glUniform4fv(location, values);
+  uniform1iv(location, values) => glUniform1iv(location, values);
+  uniform2iv(location, values) => glUniform2iv(location, values);
+  uniform3iv(location, values) => glUniform3iv(location, values);
+  uniform4iv(location, values) => glUniform4iv(location, values);
+  useProgram(program) => glUseProgram(program);
+  vertexAttribPointer(index, size, type, normalized, stride, pointer) =>
+    glVertexAttribPointer(index, size, type, normalized, stride, pointer);
+  viewport(x, y, width, height) => glViewport(x, y, width, height);
+  getShaderInfoLog(shader) => glGetShaderInfoLog(shader);
+  getProgramInfoLog(program) => glGetProgramInfoLog(program);
+
+  // TODO(vsm): Kill.
+  noSuchMethod(invocation) {
+      throw new Exception('Unimplemented ${invocation.memberName}');
+  }
+}
+
+var gl = new WebGLRenderingContext();
+
+//------------------------------------------------------------------
+// Simple audio support.
+
+void playBackground(String path) native "PlayBackground";
+void stopBackground() native "StopBackground";
+
+//-------------------------------------------------------------------
+// Set up print().
+
+get _printClosure => (s) {
+  try {
+    log(s);
+  } catch (_) {
+    throw(s);
+  }
+};
+
+//------------------------------------------------------------------
+// Temp hack for compat with WebGL.
+
+class Float32Array extends List<double> {
+  Float32Array.fromList(List a) {
+    addAll(a);
+  }
+}
+