-#ifdef WIN32
-# include <windows.h>
-# include <wingdi.h>
-#endif
#include "XGUI_ViewPort.h"
#include "XGUI_ViewWindow.h"
#endif
#include <GL/gl.h>
-//qmetatype.h must be included before any header file that defines Bool
-//see /QtCore/qmetatype.h:53 for more info
-#ifndef WIN32
-# ifndef GLX_GLXEXT_LEGACY
-# define GLX_GLXEXT_LEGACY
-# endif
-# include <GL/glx.h>
-# include <dlfcn.h>
-#endif
static double rx = 0.;
static double ry = 0.;
static int sy = 0;
static Standard_Boolean zRotation = Standard_False;
+
/*!
Create native view window for CasCade view [ static ]
*/
return viewWindow;
}
-class OpenGLUtils_FrameBuffer
-{
-public:
- OpenGLUtils_FrameBuffer();
- ~OpenGLUtils_FrameBuffer();
-
- bool init(const GLsizei&, const GLsizei&);
- void release();
-
- void bind();
- void unbind();
-
-private:
- GLuint textureId;
- GLuint fboId;
- GLuint rboId;
-};
-
-#ifndef APIENTRY
-#define APIENTRY
-#endif
-#ifndef APIENTRYP
-#define APIENTRYP APIENTRY *
-#endif
-
-#ifndef GL_FRAMEBUFFER_EXT
-#define GL_FRAMEBUFFER_EXT 0x8D40
-#endif
-
-#ifndef GL_RENDERBUFFER_EXT
-#define GL_RENDERBUFFER_EXT 0x8D41
-#endif
-
-#ifndef GL_COLOR_ATTACHMENT0_EXT
-#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
-#endif
-
-#ifndef GL_DEPTH_ATTACHMENT_EXT
-#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
-#endif
-
-#ifndef GL_FRAMEBUFFER_COMPLETE_EXT
-#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
-#endif
-
-typedef void (APIENTRYP PFNGLGENFRAMEBUFFERSEXTPROC)(GLsizei n, GLuint *framebuffers);
-typedef void (APIENTRYP PFNGLBINDFRAMEBUFFEREXTPROC)(GLenum target, GLuint framebuffer);
-typedef void (APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)(GLenum target, GLenum attachment,
- GLenum textarget, GLuint texture,
- GLint level);
-typedef GLenum (APIENTRYP PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)(GLenum target);
-typedef void (APIENTRYP PFNGLDELETEFRAMEBUFFERSEXTPROC)(GLsizei n, const GLuint *framebuffers);
-typedef void (APIENTRYP PFNGLGENRENDERBUFFERSEXTPROC)(GLsizei n, GLuint *renderbuffers);
-typedef void (APIENTRYP PFNGLBINDRENDERBUFFEREXTPROC)(GLenum target, GLuint renderbuffer);
-typedef void (APIENTRYP PFNGLRENDERBUFFERSTORAGEEXTPROC)(GLenum target, GLenum internalformat,
- GLsizei width, GLsizei height);
-typedef void (APIENTRYP PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)(GLenum target, GLenum attachment,
- GLenum renderbuffertarget,
- GLuint renderbuffer);
-typedef void (APIENTRYP PFNGLDELETERENDERBUFFERSEXTPROC)(GLsizei n, const GLuint *renderbuffers);
-
-static PFNGLGENFRAMEBUFFERSEXTPROC vglGenFramebuffersEXT = NULL;
-static PFNGLBINDFRAMEBUFFEREXTPROC vglBindFramebufferEXT = NULL;
-static PFNGLFRAMEBUFFERTEXTURE2DEXTPROC vglFramebufferTexture2DEXT = NULL;
-static PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC vglCheckFramebufferStatusEXT = NULL;
-static PFNGLDELETEFRAMEBUFFERSEXTPROC vglDeleteFramebuffersEXT = NULL;
-static PFNGLGENRENDERBUFFERSEXTPROC vglGenRenderbuffersEXT = NULL;
-static PFNGLBINDRENDERBUFFEREXTPROC vglBindRenderbufferEXT = NULL;
-static PFNGLRENDERBUFFERSTORAGEEXTPROC vglRenderbufferStorageEXT = NULL;
-static PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC vglFramebufferRenderbufferEXT = NULL;
-static PFNGLDELETERENDERBUFFERSEXTPROC vglDeleteRenderbuffersEXT = NULL;
-
-#ifndef WIN32
-#define GL_GetProcAddress( x ) glXGetProcAddressARB( (const GLubyte*)x )
-#else
-#define GL_GetProcAddress( x ) wglGetProcAddress( (const LPCSTR)x )
-#endif
-
-bool InitializeEXT()
-{
- vglGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) GL_GetProcAddress("glGenFramebuffersEXT");
- vglBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC) GL_GetProcAddress("glBindFramebufferEXT");
- vglFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) GL_GetProcAddress(
- "glFramebufferTexture2DEXT");
- vglCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) GL_GetProcAddress(
- "glCheckFramebufferStatusEXT");
- vglDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC) GL_GetProcAddress(
- "glDeleteFramebuffersEXT");
- vglGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC) GL_GetProcAddress(
- "glGenRenderbuffersEXT");
- vglBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC) GL_GetProcAddress(
- "glBindRenderbufferEXT");
- vglRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC) GL_GetProcAddress(
- "glRenderbufferStorageEXT");
- vglFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC) GL_GetProcAddress(
- "glFramebufferRenderbufferEXT");
- vglDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC) GL_GetProcAddress(
- "glDeleteRenderbuffersEXT");
-
- bool ok = vglGenFramebuffersEXT && vglBindFramebufferEXT && vglFramebufferTexture2DEXT
- && vglCheckFramebufferStatusEXT && vglDeleteFramebuffersEXT && vglGenRenderbuffersEXT
- && vglBindRenderbufferEXT && vglRenderbufferStorageEXT && vglFramebufferRenderbufferEXT
- && vglDeleteRenderbuffersEXT;
-
- return ok;
-}
-
-static bool IsEXTInitialized = InitializeEXT();
-
-OpenGLUtils_FrameBuffer::OpenGLUtils_FrameBuffer()
- : textureId(0), fboId(0), rboId(0)
-{
-}
-
-OpenGLUtils_FrameBuffer::~OpenGLUtils_FrameBuffer()
-{
- release();
-}
-
-bool OpenGLUtils_FrameBuffer::init(const GLsizei& xSize, const GLsizei& ySize)
-{
- char* ext = (char*) glGetString(GL_EXTENSIONS);
- if (!ext)
- return false;
- if (!IsEXTInitialized || strstr(ext, "GL_EXT_framebuffer_object") == NULL) {
- //qDebug( "Initializing OpenGL FrameBuffer extension failed");
- return false;
- }
-
- // create a texture object
- glEnable (GL_TEXTURE_2D);
- glGenTextures(1, &textureId);
- glBindTexture(GL_TEXTURE_2D, textureId);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, xSize, ySize, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
- glBindTexture(GL_TEXTURE_2D, 0);
-
- // create a renderbuffer object to store depth info
- vglGenRenderbuffersEXT(1, &rboId);
- vglBindRenderbufferEXT( GL_RENDERBUFFER_EXT, rboId);
- vglRenderbufferStorageEXT( GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, xSize, ySize);
- vglBindRenderbufferEXT( GL_RENDERBUFFER_EXT, 0);
-
- // create a framebuffer object
- vglGenFramebuffersEXT(1, &fboId);
- vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fboId);
-
- // attach the texture to FBO color attachment point
- vglFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D,
- textureId, 0);
-
- // attach the renderbuffer to depth attachment point
- vglFramebufferRenderbufferEXT( GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
- GL_RENDERBUFFER_EXT,
- rboId);
-
- // check FBO status
- GLenum status = vglCheckFramebufferStatusEXT( GL_FRAMEBUFFER_EXT);
-
- // Unbind FBO
- vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, 0);
-
- return status == GL_FRAMEBUFFER_COMPLETE_EXT;
-}
-
-void OpenGLUtils_FrameBuffer::release()
-{
- if (!IsEXTInitialized)
- return;
-
- glDeleteTextures(1, &textureId);
- textureId = 0;
-
- vglDeleteFramebuffersEXT(1, &fboId);
- fboId = 0;
-
- vglDeleteRenderbuffersEXT(1, &rboId);
- rboId = 0;
-}
-
-void OpenGLUtils_FrameBuffer::bind()
-{
- if (!IsEXTInitialized)
- return;
-
- vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fboId);
-}
-
-void OpenGLUtils_FrameBuffer::unbind()
-{
- if (!IsEXTInitialized)
- return;
-
- vglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, 0);
-}
//************************************************************************
//************************************************************************
}
QApplication::syncX();
- OpenGLUtils_FrameBuffer aFrameBuffer;
- if (aFrameBuffer.init(aWidth, aHeight)) {
- QImage anImage(aWidth, aHeight, QImage::Format_RGB32);
-
- glPushAttrib (GL_VIEWPORT_BIT);
- glViewport(0, 0, aWidth, aHeight);
- aFrameBuffer.bind();
-
- // draw scene
- if (toUpdate) {
- if (theRect.isNull())
- view->Redraw();
- else
- view->Redraw(theRect.x(), theRect.y(), theRect.width(), theRect.height());
- }
- aFrameBuffer.unbind();
- glPopAttrib();
-
- aFrameBuffer.bind();
- if (theRect.isNull())
- glReadPixels(0, 0, aWidth, aHeight, GL_RGBA, GL_UNSIGNED_BYTE, anImage.bits());
- else
- glReadPixels(theRect.x(), theRect.y(), aWidth, aHeight, GL_RGBA, GL_UNSIGNED_BYTE,
- anImage.bits());
- aFrameBuffer.unbind();
-
- anImage = anImage.rgbSwapped();
- anImage = anImage.mirrored();
- return anImage;
- }
- // if frame buffers are unsupported, use old functionality
unsigned char* data = new unsigned char[aWidth * aHeight * 4];
QPoint p;
