Es++ Sample: TextureSubImage |
/****************************************************************************** * * 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. * * * TextureSubImage.cpp * *****************************************************************************/ // #include <es++/opengl/OpenGLApplication.h> #include <es++/opengl/OpenGLMainView.h> #include <es++/opengl/OpenGLView.h> #include <es++/opengl/OpenGLGC.h> #include <es++/opengl/OpenGLTexture2D.h> using namespace Gtk; namespace Es { class MainView :public Es::OpenGLMainView { private: /////////////////////////////////////////////////////// //Inner classes start. class SimpleView :public Es::OpenGLView { private: OpenGLGC gc; OpenGLTexture2D texture; public: SimpleView() :OpenGLView() { } virtual void display() { setViewPort(); gc.clearColor(1.0, 1.0, 1.0, 1.0); gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); gc.color(1.0, 1.0, 1.0); glNormal3d(0.0, 0.0, 1.0); gc.begin(GL_QUADS); texture.coord(0.0, 0.0); gc.vertex(-1.0, 1.0, 0.0); texture.coord(1.0, 0.0); gc.vertex( 1.0, 1.0, 0.0); texture.coord(1.0, 1.0); gc.vertex( 1.0, -1.0, 0.0); texture.coord(0.0, 1.0); gc.vertex(-1.0, -1.0, 0.0); gc.end(); } virtual void resize(int w, int h) { if (w == 0 || h == 0) { return; } gc.matrixMode(GL_PROJECTION); gc.loadIdentity(); gc.ortho(-1.25, 1.25, -1.25, 1.25, 1., 20.); gc.matrixMode(GL_MODELVIEW); gc.loadIdentity(); gc.lookAt(0., 0., 10., 0., 0., 0., 0., 1., 0.); } virtual void initialize() { gc.enable(GL_DEPTH_TEST); gc.enable(GL_TEXTURE_2D); createTexture("./images/Flower.png"); setSubImage("./images/Nanten.png", 0, 20, 20); } void createTexture(const char* filename) { texture.bind(); texture.parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR); texture.parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR); texture.env(GL_TEXTURE_ENV_MODE, GL_MODULATE); try { texture.imageFromPNGFile(filename); } catch (Exception& ex) { caught(ex); } } void setSubImage(const char* filename, GLint level, GLint offset, GLint yoffset) { try { texture.subImageFromPNGFile(filename, level, offset, yoffset); } catch (Exception& ex) { caught(ex); } } }; // 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, 600); 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; }