OZ++ Class: OpenGLRenderBuffers |
/****************************************************************************** * * Copyright (c) 2016 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. * * * OpenGLRenderBuffer.h * *****************************************************************************/ #pragma once #ifdef GL_ARB_framebuffer_object #include <oz++/opengl/OpenGLObject.h> namespace OZ { class OpenGLRenderBuffers :public OpenGLObject { private: GLsizei size; GLuint* buffers; protected: void generate(GLsizei size, GLuint* buffers) { static PFNGLGENRENDERBUFFERSPROC glGenRenderbuffers = NULL; if (glGenRenderbuffers == NULL) { glGenRenderbuffers = (PFNGLGENRENDERBUFFERSPROC)load("glGenRenderbuffers"); } glGenRenderbuffers(size, buffers); } //destroy renderbuffer void destroy() { static PFNGLDELETERENDERBUFFERSPROC glDeleteRenderbuffers = NULL; if (glDeleteRenderbuffers == NULL) { glDeleteRenderbuffers = (PFNGLDELETERENDERBUFFERSPROC)load("glDeleteRenderbuffers"); } glDeleteRenderbuffers(size, buffers); } void bind(GLenum target, GLuint buffer) { static PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer = NULL; if (glBindRenderbuffer == NULL) { glBindRenderbuffer = (PFNGLBINDRENDERBUFFERPROC)load("glBindRenderbuffer"); } glBindRenderbuffer(target, buffer); } public: OpenGLRenderBuffers(GLsizei n) :OpenGLObject(), size(n), buffers(NULL) { if (size < 1) { throw IException("Invalid parameters. size=%d", size); } buffers = new GLuint[size]; generate(size, buffers); } ~OpenGLRenderBuffers() { destroy(); delete [] buffers; buffers = NULL; } GLuint getNth(int n) { if (n >= 0 && n < size) { return buffers[n]; } else { throw IException("Invalid nth parameter %d", n); } } void bindNth(GLenum target, int n) { if (n >= 0 && n < size) { bind(target, buffers[n]); } else { throw IException("Invalid nth parameter %d", n); } } void getParameteriv(GLenum target, GLenum pname, GLint* params) { static PFNGLGETRENDERBUFFERPARAMETERIVPROC glGetRenderbufferParameteriv = NULL; if (glGetRenderbufferParameteriv == NULL) { glGetRenderbufferParameteriv = (PFNGLGETRENDERBUFFERPARAMETERIVPROC)load("glGetRenderbufferParameteriv"); } glGetRenderbufferParameteriv(target, pname, params); } GLboolean isRenderbuffer(GLuint buffer) { static PFNGLISRENDERBUFFERPROC glIsRenderbuffer = NULL; if (glIsRenderbuffer == NULL) { glIsRenderbuffer = (PFNGLISRENDERBUFFERPROC)load("glIsRenderbuffer"); } return glIsRenderbuffer(buffer); } void storage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height) { static PFNGLRENDERBUFFERSTORAGEPROC glRenderbufferStorage = NULL; if (glRenderbufferStorage == NULL) { glRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEPROC)load("glRenderbufferStorage"); } glRenderbufferStorage(target, internalformat, width, height); } }; } #endif