E:/framework - Kopie/src/FBO.h

#include "common.h"
#include <glew.h>

#include <windows.h>
#include <stdlib.h>
#include <io.h>
#include <glew.h>


class FBO
{
public:
        FBO(int g_iWidth, int g_iHeight)
        {
                bool bit32 =true;
                GLenum FBOstatus;
                /*
                glGenTextures(1, &depthbuffer1);
                glBindTexture(GL_TEXTURE_2D, depthbuffer1);
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
                glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
                glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );  
                glTexImage2D( GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, g_iWidth, g_iHeight, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0);
                glBindTexture(GL_TEXTURE_2D, 0);*/

                glGenTextures(1,&tex1);
                glBindTexture(GL_TEXTURE_2D, tex1);
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
                glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
                glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );
                if(bit32)       glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, g_iWidth, g_iHeight, 0, GL_RGBA, GL_FLOAT, 0);
                else            glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, g_iWidth, g_iHeight, 0, GL_RGBA, GL_FLOAT, 0);
                glGenerateMipmapEXT(GL_TEXTURE_2D);
                glBindTexture(GL_TEXTURE_2D, 0);

                glGenFramebuffersEXT(1, &fbo1);
                glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo1);
                //glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT ,GL_TEXTURE_2D, depthbuffer1, 0);
                glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,GL_TEXTURE_2D, tex1, 0);
        
                FBOstatus = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
                if(FBOstatus != GL_FRAMEBUFFER_COMPLETE_EXT) CheckFBO(FBOstatus);
                glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
        };

        ~FBO()
        {
                glDeleteFramebuffersEXT(1, &fbo1);
                glDeleteRenderbuffersEXT(1, &depthbuffer1);
                glDeleteTextures(1, &tex1);
        };

        void CheckFBO(GLenum FBOstatus)
        {
                if(FBOstatus == GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT)                       printf("Incomplete attachment\n");
                if(FBOstatus == GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT)       printf("Missing attachment\n");
                if(FBOstatus == GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT)       printf("Incomplete dimensions\n");
                if(FBOstatus == GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT)                       printf("Incomplete formats\n");
                if(FBOstatus == GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT)                          printf("Incomplete draw buffer\n");
                if(FBOstatus == GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT)                      printf("Incomplete read buffer\n");
                if(FBOstatus == GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT)                      printf("GL_FRAMEBUFFER_COMPLETE_EXT für Blur Effekt konnte ned benutzt werden\n");
                if(FBOstatus == GL_FRAMEBUFFER_UNSUPPORTED_EXT)                                         printf("Framebufferobjects unsupported\n");
        };

        void Bind()
        {
                glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo1); //FRAMEBUFFEROBJECT START!!!
        };

        void Unbind()
        {
                glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
        };

        void BindColorAttachementAtTextureAndEnable(unsigned int i)
        {
                glActiveTexture(GL_TEXTURE0+i);
                glBindTexture(GL_TEXTURE_2D, tex1);
                glEnable(GL_TEXTURE_2D);
        };


        GLuint fbo1;
        GLuint depthbuffer1;
        GLuint tex1;

};