Es++ Sample: VertexBufferARB |
/****************************************************************************** * * Copyright (c) 2017 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * VertexBufferARB.cpp * *****************************************************************************/ // #include <es++/SmartPtr.h> #include <es++/opengl/OpenGLApplication.h> #include <es++/opengl/OpenGLMainView.h> #include <es++/opengl/OpenGLView.h> #include <es++/opengl/OpenGLGC.h> //OpenGL 1.4 #include <es++/opengl/OpenGLBufferARB.h> using namespace Gtk; namespace Es { class MainView :public Es::OpenGLMainView { private: /////////////////////////////////////////////////////// //Inner classes start. class SimpleView :public Es::OpenGLView { private: OpenGLGC gc; SmartPtr<OpenGLBufferARB> vbo; public: SimpleView() :OpenGLView() { } virtual void display() { setViewPort(); //Set a proportional perspective. gc.matrixMode(GL_PROJECTION); gc.loadIdentity(); gc.perspective(16.0, (double)width() / (double)height(), 0.5, 100.0); gc.matrixMode(GL_MODELVIEW); gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); gc.clearColor(1.0, 1.0, 1.0, 1.0); gc.color(1, 0, 0); //red vbo->bind(); vbo->drawArray(GL_POLYGON); vbo->unbind(); } virtual void resize(int w, int h) { if (w == 0 || h == 0) { return; } gc.matrixMode(GL_PROJECTION); gc.loadIdentity(); gc.perspective(20.0, (double)w / (double)h, 1.0, 100.0); gc.matrixMode(GL_MODELVIEW); gc.loadIdentity(); gc.lookAt(3.0, 4.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); } virtual void initialize() { static GLfloat points[] = { 0.0, 0.0, 0.5, -1.0, 0.0, 0.5, 0.0, 1.0, 0.0, -0.5, 0.0, 0.0, 0.5, 0.0, 0.0, -0.5, 1.0, 1.0, 0.5, 0.0, 1.0, }; vbo = new OpenGLBufferARB(GL_ARRAY_BUFFER_ARB); vbo->bind(); int size = SizeOf(points) * sizeof(GLfloat); vbo->data(size, points, GL_DYNAMIC_DRAW); vbo->unbind(); } }; // Inner classes end. /////////////////////////////////////////////////////// Es::HorizontalLayout horiz_layout; SimpleView simple_view; public: ////////////////////////////////////////////// //Constructor // MainView(Es::OpenGLApplication& applet, std::string& name, Es::Args& args) :OpenGLMainView(applet, name, args) { int w = (int)args.get(XmNwidth); int h = (int)args.get(XmNheight); Es::MainLayout& main_layout = get_main_layout(); main_layout.pack_start(horiz_layout); horiz_layout.pack_start(simple_view); OpenGLContext* context = applet.getOpenGLContext(); simple_view.set_opengl_context(context); show_all_children(); } void render() { simple_view.render(); } }; } int main(int argc, char** argv) { Es::Environment env; try { std::string name = argv[0]; Es::OpenGLApplication applet(argc, argv); Es::Args args; args.set(XmNx, 20); args.set(XmNy, 40); args.set(XmNwidth, 500); args.set(XmNheight, 400); Es::MainView mainv(applet, name, args); mainv.show(); applet.run(mainv); } catch (Es::Exception& ex) { caught(ex); } catch (...) { printf("Get exception \n"); } return 0; }