2016-03-19 06:57:51 +13:00
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#include "macofflinegl.h"
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#include <traster.h>
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#include <tconvert.h>
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#include "tthread.h"
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2016-06-15 18:43:10 +12:00
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namespace {
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2016-03-19 06:57:51 +13:00
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#if defined(powerpc)
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2016-06-15 18:43:10 +12:00
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void rightRotateBits(UCHAR *buf, int bufferSize) {
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UINT *buffer = (UINT *)buf;
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register 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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2016-03-19 06:57:51 +13:00
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}
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#else
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2016-06-15 18:43:10 +12:00
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void rightRotateBits(UCHAR *buf, int bufferSize) {
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UINT *buffer = (UINT *)buf;
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register 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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2016-03-19 06:57:51 +13:00
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}
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#endif
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2016-06-15 18:43:10 +12:00
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} // namespace
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2016-03-19 06:57:51 +13:00
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GLubyte *memBuffer;
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//=============================================================================
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// MacOfflineGL : implem. offlineGL usando Pixel Buffer (tramite AGL)
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//-----------------------------------------------------------------------------
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MacOfflineGL::MacOfflineGL(TDimension rasterSize, const TOfflineGL::Imp *shared)
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2016-06-15 18:43:10 +12:00
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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, shared);
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2016-03-19 06:57:51 +13:00
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}
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//-----------------------------------------------------------------------------
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2016-06-15 18:43:10 +12:00
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MacOfflineGL::~MacOfflineGL() { aglDestroyContext(m_context); }
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2016-03-19 06:57:51 +13:00
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//-----------------------------------------------------------------------------
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2016-06-15 18:43:10 +12:00
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void MacOfflineGL::createContext(TDimension rasterSize,
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const TOfflineGL::Imp *shared) {
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GLint attribs[20], cnt = 0;
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// NOTE: AGL_OFFSCREEN *must* be selected - or it seems that gl surfaces are
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// never destructed correctly!
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// This may lead to a kernel panic!
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attribs[cnt++] = AGL_RGBA;
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attribs[cnt++] = GL_TRUE;
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attribs[cnt++] = AGL_PIXEL_SIZE;
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attribs[cnt++] = 32;
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attribs[cnt++] = AGL_BUFFER_SIZE;
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attribs[cnt++] = 32;
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attribs[cnt++] = AGL_STENCIL_SIZE;
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attribs[cnt++] = 8;
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attribs[cnt++] = AGL_DEPTH_SIZE;
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attribs[cnt++] = 24;
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attribs[cnt++] = AGL_OFFSCREEN;
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attribs[cnt++] = AGL_ALPHA_SIZE;
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attribs[cnt++] = 8;
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attribs[cnt] = AGL_NONE;
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AGLPixelFormat fmt = aglChoosePixelFormat(0, 0, attribs);
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if (fmt == NULL) {
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GLenum err = aglGetError();
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std::cout << "Unable to create a pixel format, AGLError = " << err
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<< std::endl;
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}
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m_context = aglCreateContext(fmt, NULL);
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if (!m_context) {
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GLenum err = aglGetError();
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/*
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AGL_NO_ERROR 0
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AGL_BAD_ATTRIBUTE 10000
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AGL_BAD_PROPERTY 10001
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AGL_BAD_PIXELFMT 10002
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AGL_BAD_RENDINFO 10003
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AGL_BAD_CONTEXT 10004
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AGL_BAD_DRAWABLE 10005
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AGL_BAD_GDEV 10006
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AGL_BAD_STATE 10007
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AGL_BAD_VALUE 10008
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AGL_BAD_MATCH 10009
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AGL_BAD_ENUM 10010
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AGL_BAD_OFFSCREEN 10011
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AGL_BAD_FULLSCREEN 10012
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AGL_BAD_WINDOW 10013
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AGL_BAD_POINTER 10014
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AGL_BAD_MODULE 10015
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AGL_BAD_ALLOC 10016
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AGL_BAD_CONNECTION 10017
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*/
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std::cout << "Unable to create an OpenGL Context, AGLError = " << err
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<< std::endl;
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}
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makeCurrent();
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// Creo il pixel buffer
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GLboolean ret;
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AGLPbuffer pbuffer;
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ret = aglCreatePBuffer(rasterSize.lx, rasterSize.ly, GL_TEXTURE_RECTANGLE_EXT,
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GL_RGBA, 0, &pbuffer);
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if (!ret) {
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GLenum err = aglGetError();
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std::cout << "Unable to create a PBuffer, AGLError = " << err << std::endl;
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}
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// memBuffer = new GLubyte[rasterSize.lx*rasterSize.ly*4];
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ret = aglSetOffScreen(m_context, rasterSize.lx, rasterSize.ly,
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rasterSize.lx * 4, memBuffer);
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ret = aglSetPBuffer(m_context, pbuffer, 0, 0, 0);
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if (!ret) {
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GLenum err = aglGetError();
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std::cout << "Unable to set a PBuffer, AGLError = " << err << std::endl;
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}
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// Non serve piu'
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aglDestroyPixelFormat(fmt);
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2016-03-19 06:57:51 +13:00
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}
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//-----------------------------------------------------------------------------
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2016-06-15 18:43:10 +12:00
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void MacOfflineGL::makeCurrent() {
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if (m_context) {
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bool ret = aglSetCurrentContext(m_context);
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if (ret == GL_FALSE) {
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GLenum err = aglGetError();
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std::cout << "Unable to set current OpenGL Context, AGLError = " << err
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<< std::endl;
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}
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} else
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m_oldContext = 0;
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2016-03-19 06:57:51 +13:00
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}
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//-----------------------------------------------------------------------------
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2016-06-15 18:43:10 +12:00
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void MacOfflineGL::doneCurrent() {
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if (aglGetCurrentContext() != m_context) return;
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aglSetCurrentContext(0);
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2016-03-19 06:57:51 +13:00
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}
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//-----------------------------------------------------------------------------
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2016-06-15 18:43:10 +12:00
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void MacOfflineGL::saveCurrentContext() {
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m_oldContext = aglGetCurrentContext();
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2016-03-19 06:57:51 +13:00
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}
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//-----------------------------------------------------------------------------
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2016-06-15 18:43:10 +12:00
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void MacOfflineGL::restoreCurrentContext() {
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if (m_oldContext) aglSetCurrentContext(m_oldContext);
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m_oldContext = 0;
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2016-03-19 06:57:51 +13:00
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}
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//-----------------------------------------------------------------------------
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2016-06-15 18:43:10 +12:00
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void MacOfflineGL::getRaster(TRaster32P raster) {
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makeCurrent();
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glFinish();
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2016-03-19 06:57:51 +13:00
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2016-06-15 18:43:10 +12:00
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int lx = raster->getLx();
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int ly = raster->getLy();
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2016-03-19 06:57:51 +13:00
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2016-06-15 18:43:10 +12:00
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raster->lock();
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2016-03-19 06:57:51 +13:00
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2016-06-15 18:43:10 +12:00
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glReadPixels(0, 0, lx, ly, GL_RGBA, GL_UNSIGNED_BYTE, raster->getRawData());
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2016-03-19 06:57:51 +13:00
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2016-06-15 18:43:10 +12:00
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rightRotateBits(raster->getRawData(), lx * ly);
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2016-03-19 06:57:51 +13:00
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2016-06-15 18:43:10 +12:00
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raster->unlock();
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2016-03-19 06:57:51 +13:00
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}
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