OZ++ Class: OpenGLFrameBuffers |
/****************************************************************************** * * 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. * * * OpenGLFrameBuffers.h * *****************************************************************************/ #pragma once #ifdef GL_ARB_framebuffer_object #include <oz++/opengl/OpenGLObject.h> namespace OZ { class OpenGLFrameBuffers :public OpenGLObject { private: GLsizei size; GLuint* buffers; protected: void generate(GLsizei size, GLuint* buffers) { static PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers = NULL; if (glGenFramebuffers == NULL) { glGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC)load("glGenFramebuffers"); } glGenFramebuffers(size, buffers); } void bind(GLenum target, GLuint buffer) { static PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer = NULL; if (glBindFramebuffer == NULL) { glBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC)load("glBindFramebuffer"); } glBindFramebuffer(target, buffer); } void destroy() { static PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers = NULL; if (glDeleteFramebuffers == NULL) { glDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC)load("glDeleteFramebuffers"); } glDeleteFramebuffers(size, buffers); } public: OpenGLFrameBuffers(GLsizei n) :OpenGLObject(), size(n), buffers(NULL) { if (size <= 0) { throw IException("Invalid size parameter. size=%d", size); } buffers = new GLuint[size]; generate(size, buffers); } ~OpenGLFrameBuffers() { destroy(); delete [] buffers; buffers = NULL; } void blit(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter) { static PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer = NULL; if (glBlitFramebuffer == NULL) { glBlitFramebuffer = (PFNGLBLITFRAMEBUFFERPROC)load("glBlitFramebuffer"); } glBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter); } GLenum check(GLenum target) { static PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus = NULL; if (glCheckFramebufferStatus == NULL) { glCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC)load("glCheckFramebufferStatus"); } return glCheckFramebufferStatus(target); } void attachRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer) { static PFNGLFRAMEBUFFERRENDERBUFFERPROC glFramebufferRenderbuffer = NULL; if (glFramebufferRenderbuffer == NULL) { glFramebufferRenderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFERPROC)load("glFramebufferRenderbuffer"); } glFramebufferRenderbuffer(target, attachment, renderbuffertarget, renderbuffer); } void detachRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget) { attachRenderbuffer(target, attachment, renderbuffertarget, 0); } void texture1D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level) { static PFNGLFRAMEBUFFERTEXTURE1DPROC glFramebufferTexture1D = NULL; if (glFramebufferTexture1D == NULL) { glFramebufferTexture1D = (PFNGLFRAMEBUFFERTEXTURE1DPROC)load("glFramebufferTexture1D"); } glFramebufferTexture1D(target, attachment, textarget, texture, level); } void texture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level) { static PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D = NULL; if (glFramebufferTexture2D == NULL) { glFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DPROC)load("glFramebufferTexture2D"); } glFramebufferTexture2D(target, attachment, textarget, texture, level); } void texture3D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset) { static PFNGLFRAMEBUFFERTEXTURE3DPROC glFramebufferTexture3D = NULL; if (glFramebufferTexture3D == NULL) { glFramebufferTexture3D = (PFNGLFRAMEBUFFERTEXTURE3DPROC)load("glFramebufferTexture3D"); } glFramebufferTexture3D(target, attachment, textarget, texture,level, zoffset); } void getAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params) { static PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glGetFramebufferAttachmentParameteriv = NULL; if (glGetFramebufferAttachmentParameteriv == NULL) { glGetFramebufferAttachmentParameteriv = (PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC)load("glGetFramebufferAttachmentParameteriv"); } glGetFramebufferAttachmentParameteriv(target, attachment, pname, params); } GLboolean isFramebuffer(GLuint buffer) { static PFNGLISFRAMEBUFFERPROC glIsFramebuffer = NULL; if (glIsFramebuffer == NULL) { glIsFramebuffer = (PFNGLISFRAMEBUFFERPROC)load("glIsFramebuffer"); } return glIsFramebuffer(buffer); } GLuint getNth(int n) { if (n >= 0 && n < size) { return buffers[n]; } else { throw IException("Invalid index %d", n); } } void bindNth(GLenum target, int n) { if (n >= 0 && n < size) { bind(target, buffers[n]); } else { throw IException("Invalid index %d", n); } } }; } #endif