Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
#include "qtofflinegl.h"
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#include <traster.h></traster.h>
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#include <tconvert.h></tconvert.h>
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//-----------------------------------------------------------------------------
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shun_iwasawa 0cae24
#if 0  // was _WIN32, this function not used
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2fc36c
static void swapRedBlueChannels(
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    void *buffer,
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    int bufferSize)  // Flips The Red And Blue Bytes (WidthxHeight)
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{
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  void *b = buffer;  // Pointer To The Buffer
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#ifdef x64
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  int size   = bufferSize;
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  UCHAR *pix = (UCHAR *)b;
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  while (size > 0) {
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    UCHAR r    = *pix;
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    UCHAR b    = *(pix + 2);
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    *pix       = b;
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    *(pix + 2) = r;
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    pix += 4;
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    size--;
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  }
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#else
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  __asm        // Assembler Code To Follow
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  {
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		mov ecx, bufferSize  // Counter Set To Dimensions Of Our Memory Block
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			mov ebx, b  // Points ebx To Our Data (b)
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			label:  // Label Used For Looping
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			mov al,[ebx+0]  // Loads Value At ebx Into al
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			mov ah,[ebx+2]  // Loads Value At ebx+2 Into ah
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			mov [ebx+2],al  // Stores Value In al At ebx+2
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			mov [ebx+0],ah  // Stores Value In ah At ebx
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			add ebx,4  // Moves Through The Data By 4 Bytes
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			dec ecx  // Decreases Our Loop Counter
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			jnz label  // If Not Zero Jump Back To Label
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  }
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#endif
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}
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#endif
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//-----------------------------------------------------------------------------
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#if defined(MACOSX)
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#if defined(powerpc)
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void rightRotateBits(UCHAR *buf, int bufferSize) {
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  UINT *buffer = (UINT *)buf;
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  UINT app;
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  for (int i = 0; i < bufferSize; i++, buffer++) {
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    app     = *buffer;
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    *buffer = app >> 8 | app << 24;
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  }
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}
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#else
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void rightRotateBits(UCHAR *buf, int bufferSize) {
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  UINT *buffer = (UINT *)buf;
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  UINT app;
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  for (int i = 0; i < bufferSize; i++, buffer++) {
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    app     = *buffer;
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    *buffer = (app >> 16 & 0x000000ff) | (app << 16 & 0x00ff0000) |
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              (app & 0xff00ff00);
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  }
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}
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#endif
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#endif
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//-----------------------------------------------------------------------------
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//=============================================================================
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// QtOfflineGL : implem. offlineGL usando QT
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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QtOfflineGL::QtOfflineGL(TDimension rasterSize,
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                         std::shared_ptr<tofflinegl::imp> shared)</tofflinegl::imp>
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    : TOfflineGL::Imp(rasterSize.lx, rasterSize.ly)
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    , m_context(0)
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    , m_oldContext(0) {
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  createContext(rasterSize, std::move(shared));
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  /*
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makeCurrent();
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glClearColor(0.0f,0.0f,0.0f,0.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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doneCurrent();
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*/
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}
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//-----------------------------------------------------------------------------
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QtOfflineGL::~QtOfflineGL() {}
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//-----------------------------------------------------------------------------
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void QtOfflineGL::createContext(TDimension rasterSize,
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                                std::shared_ptr<tofflinegl::imp> shared) {</tofflinegl::imp>
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  // Imposto il formato dei Pixel (pixelFormat)
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  /*
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   32,                    // 32-bit color depth
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   0, 0, 0, 0, 0, 0,      // color bits ignored
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   8,                     // no alpha buffer
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   0,                     // shift bit ignored
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   0,                     // no accumulation buffer
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   0, 0, 0, 0,            // accum bits ignored
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   32,                    // 32-bit z-buffer
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   32,                    // max stencil buffer
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   0,                     // no auxiliary buffer
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   PFD_MAIN_PLANE,        // main layer
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   0,                     // reserved
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   0, 0, 0                // layer masks ignored
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   ATTENZIONE !! SU MAC IL FORMATO E' DIVERSO (casomai possiamo mettere un
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   ifdef)
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   SPECIFICHE  MAC = depth_size 24, stencil_size 8, alpha_size 1
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*/
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  QGLFormat fmt;
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#if defined(_WIN32)
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  fmt.setAlphaBufferSize(8);
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  fmt.setAlpha(true);
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  fmt.setRgba(true);
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  fmt.setDepthBufferSize(32);
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  fmt.setDepth(true);
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  fmt.setStencilBufferSize(32);
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  fmt.setStencil(true);
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  fmt.setAccum(false);
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  fmt.setPlane(0);
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#elif defined(MACOSX)
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  fmt = QGLFormat::defaultFormat();
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  // printf("GL Version: %s\n",glGetString(GL_VERSION));
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  fmt.setVersion(2, 1); /* OSX10.8 では 3.2 だめかも */
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#if 0
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  fmt.setAlphaBufferSize(8);
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  fmt.setAlpha(true);
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  fmt.setRgba(true);
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  fmt.setDepthBufferSize(32);
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  fmt.setDepth(true);
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  fmt.setStencilBufferSize(8);
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  fmt.setStencil(true);
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  fmt.setAccum(false);
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  fmt.setPlane(0);
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  fmt.setDirectRendering(false);
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#endif
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#elif defined(LINUX) || defined(FREEBSD)
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  fmt = QGLFormat::defaultFormat();
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  // printf("GL Version: %s\n",glGetString(GL_VERSION));
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  fmt.setVersion(2, 1); /* XXX? */
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#endif
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  QSurfaceFormat format;
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  format.setProfile(QSurfaceFormat::CompatibilityProfile);
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  m_surface = std::make_shared<qoffscreensurface>();</qoffscreensurface>
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  m_surface->setFormat(format);
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  m_surface->create();
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  m_context = std::make_shared<qopenglcontext>();</qopenglcontext>
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  m_context->setFormat(format);
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  m_context->create();
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  m_context->makeCurrent(m_surface.get());
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  QOpenGLFramebufferObjectFormat fbo_format;
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  fbo_format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
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  m_fbo = std::make_shared<qopenglframebufferobject>(rasterSize.lx,</qopenglframebufferobject>
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                                                     rasterSize.ly, fbo_format);
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  m_fbo->bind();
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  printf("create context:%p [thread:0x%x]\n", m_context.get(),
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         (unsigned int)(size_t)QThread::currentThreadId());
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  // Creo il contesto OpenGL - assicurandomi che sia effettivamente creato
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  // NOTA: Se il contesto non viene creato, di solito basta ritentare qualche
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  // volta.
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGL::makeCurrent() {
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  if (m_context) {
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    m_context->moveToThread(QThread::currentThread());
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    m_context->makeCurrent(m_surface.get());
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  }
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGL::doneCurrent() {
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  if (m_context) {
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    m_context->moveToThread(0);
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    m_context->doneCurrent();
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  }
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGL::saveCurrentContext() {
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  //  m_oldContext = const_cast<qglcontext*>(QGLContext::currentContext());</qglcontext*>
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGL::restoreCurrentContext() {
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  //  if(m_oldContext) m_oldContext->makeCurrent();
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  //  m_oldContext = 0;
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGL::getRaster(TRaster32P raster) {
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  makeCurrent();
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  glFlush();
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  int lx = raster->getLx();
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  int ly = raster->getLy();
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  raster->lock();
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  raster->copy(TRaster32P(lx, ly, m_fbo->width(),
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                          (TPixelRGBM32 *)m_fbo->toImage(false).bits(), false));
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  raster->unlock();
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}
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// QGLPixelBuffer::hasOpenGLPbuffers() (statica) -> true se la scheda supporta i
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// PBuffer
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//=============================================================================
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// QtOfflineGLPBuffer : implem. offlineGL usando QT e PBuffer
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//-----------------------------------------------------------------------------
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QtOfflineGLPBuffer::QtOfflineGLPBuffer(TDimension rasterSize)
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    : TOfflineGL::Imp(rasterSize.lx, rasterSize.ly), m_context(0) {
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  createContext(rasterSize);
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  makeCurrent();
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  glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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  glClear(GL_COLOR_BUFFER_BIT);
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  doneCurrent();
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}
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//-----------------------------------------------------------------------------
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QtOfflineGLPBuffer::~QtOfflineGLPBuffer() {}
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//-----------------------------------------------------------------------------
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void QtOfflineGLPBuffer::createContext(TDimension rasterSize) {
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  // Imposto il formato dei Pixel (pixelFormat)
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  /*
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32,                    // 32-bit color depth
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0, 0, 0, 0, 0, 0,      // color bits ignored
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8,                     // no alpha buffer
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0,                     // shift bit ignored
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0,                     // no accumulation buffer
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0, 0, 0, 0,            // accum bits ignored
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32,                    // 32-bit z-buffer
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32,                    // max stencil buffer
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0,                     // no auxiliary buffer
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PFD_MAIN_PLANE,        // main layer
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0,                     // reserved
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0, 0, 0                // layer masks ignored
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ATTENZIONE !! SU MAC IL FORMATO E' DIVERSO (casomai possiamo mettere un ifdef)
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SPECIFICHE  MAC = depth_size 24, stencil_size 8, alpha_size 1
Toshihiro Shimizu 890ddd
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*/
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  QGLFormat fmt;
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#if defined(_WIN32)
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  fmt.setAlphaBufferSize(8);
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  fmt.setAlpha(false);
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  fmt.setRgba(true);
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  fmt.setDepthBufferSize(32);
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  fmt.setDepth(true);
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  fmt.setStencilBufferSize(32);
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  fmt.setStencil(true);
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  fmt.setAccum(false);
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  fmt.setPlane(0);
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#elif defined(MACOSX)
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  fmt.setAlphaBufferSize(1);
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  fmt.setAlpha(false);
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  fmt.setRgba(true);
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  fmt.setDepthBufferSize(24);
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  fmt.setDepth(true);
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  fmt.setStencilBufferSize(8);
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  fmt.setStencil(true);
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  fmt.setAccum(false);
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  fmt.setPlane(0);
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#elif defined(LINUX) || defined(FREEBSD)
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  fmt.setAlphaBufferSize(1);
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  fmt.setAlpha(false);
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  fmt.setRgba(true);
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  fmt.setDepthBufferSize(24);
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  fmt.setDepth(true);
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  fmt.setStencilBufferSize(8);
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  fmt.setStencil(true);
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  fmt.setAccum(false);
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  fmt.setPlane(0);
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#endif
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  // Il PixelBuffer deve essere con width ed height potenze di 2
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  int sizeMax = std::max(rasterSize.lx, rasterSize.ly);
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  // trovo la potenza di 2 che "contiene" sizeMax e la utilizzo per il PBuffer
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  int pBufferSize = 2;
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  while (pBufferSize < sizeMax) pBufferSize *= 2;
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  m_context =
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      std::make_shared<qglpixelbuffer>(QSize(pBufferSize, pBufferSize), fmt);</qglpixelbuffer>
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGLPBuffer::makeCurrent() {
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  if (m_context) {
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    m_context->makeCurrent();
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  }
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGLPBuffer::doneCurrent() {
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  if (m_context) m_context->doneCurrent();
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}
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//-----------------------------------------------------------------------------
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void QtOfflineGLPBuffer::getRaster(TRaster32P raster) {
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  makeCurrent();
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  glFlush();
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  // The image is stored using a 32-bit ARGB format (0xAARRGGBB).
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  QImage image = m_context->toImage();
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  int lx = raster->getLx(), ly = raster->getLy();
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  static const TRaster32P emptyRaster;
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  if (image.height() == 0 || image.width() == 0) return;
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  // devo iniziare a leggere la Y da un certo offset
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  // dato dalla differenza tra la y della image e la y del raster
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  int yOffset = image.height() - ly;
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  raster->lock();
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  for (int y = 0; y < ly; y++) {
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    QRgb *inpPix = (QRgb *)image.scanLine(yOffset + y);
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    TPixel32 *pix    = raster->pixels(ly - 1 - y);
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    TPixel32 *endPix = pix + lx;
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    for (; pix < endPix; ++pix) {
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      pix->m = 255;
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      pix->r = qRed(*inpPix);
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      pix->g = qGreen(*inpPix);
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      pix->b = qBlue(*inpPix);
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      inpPix++;
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    }
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  }
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  raster->unlock();
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}