a7b6545028
I fail to build TIFF code: it requires access to libtiff internals but it unavailable with libtiff prom ports. Probably pre build form thirdparty/tiff-4.0.3 should fix this, but I don't check this. Tiff code disabled for work but available in options. I fail with SSE2 too, there is some mess with class initialization: TRaster32P rout32 = rout; have no idea how to fix it. If some one want to play with it, then try to build with CFLAGS+= -DUSE_SSE2 -DDWORD=uint32_t -D_aligned_malloc=aligned_alloc -D_aligned_free=free on non windows system. FarmServer::queryHwInfo() - now uses TSystem::***() to collect system info, to avoid code duplication. Add pthread as required lib.
136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
#pragma once
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#ifndef OFFSCREENGL_H
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#define OFFSCREENGL_H
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#if defined(LINUX) || defined(FREEBSD) || defined(MACOSX)
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#include "tofflinegl.h"
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#endif
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class OffScreenGL {
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public:
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OffScreenGL(int width, int height, int bpp, int stencilBpp = 0) {
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// -----------------------------------------------------------------------------------
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// //
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// creo il contesto openGL //
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// -----------------------------------------------------------------------------------
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// //
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#ifdef _WIN32
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initBITMAPINFO(m_info, width, height, bpp);
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m_offData = 0; // a pointer to buffer
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m_offHdc = // open an offscreen device
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GetDC(NULL);
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m_offDIB = // and a bitmap image
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CreateDIBSection(m_offHdc, &m_info, DIB_RGB_COLORS, &m_offData, NULL,
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0);
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assert(m_offDIB);
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assert(m_offData);
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m_offDC = CreateCompatibleDC(m_offHdc);
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m_oldobj = // select BIB to write
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SelectObject(m_offDC, m_offDIB);
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static PIXELFORMATDESCRIPTOR pfd = {
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sizeof(PIXELFORMATDESCRIPTOR), // size of this pfd
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1, // version number
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0 | (false ? (0) : (PFD_DRAW_TO_BITMAP | PFD_SUPPORT_GDI)) |
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PFD_SUPPORT_OPENGL, // support OpenGL
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PFD_TYPE_RGBA, // RGBA type
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bpp, // 32-bit color depth
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0,
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0, 0, 0, 0, 0, // color bits ignored
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bpp >> 2, // 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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0, // 32-bit z-buffer
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stencilBpp, // no 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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};
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// std::cout << "bit depth = " << v << std::endl;
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// get the best available match of pixel format for the device context
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int iPixelFormat = ChoosePixelFormat(m_offDC, &pfd);
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assert(iPixelFormat != 0);
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// make that the pixel format of the device context
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int ret = SetPixelFormat(m_offDC, iPixelFormat, &pfd);
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DWORD dw = GetLastError();
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assert(ret == TRUE);
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// make a valid context for OpenGL rendering
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m_hglRC = wglCreateContext(m_offDC);
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assert(m_hglRC);
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/*
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ret = wglMakeCurrent( m_offDC, m_hglRC );
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assert(ret == TRUE);
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*/
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#else
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#if defined(LINUX) || defined(FREEBSD) || defined(MACOSX)
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m_offlineGL = new TOfflineGL(TDimension(width, height));
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#endif
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#endif
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}
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~OffScreenGL() {
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// -----------------------------------------------------------------------------------
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// //
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// cancello il contesto openGL //
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// -----------------------------------------------------------------------------------
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// //
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#ifdef _WIN32
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wglDeleteContext(m_hglRC);
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// release object
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SelectObject(m_offDC, m_oldobj);
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DeleteObject(m_offDC);
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DeleteObject(m_offDIB);
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DeleteObject(m_offHdc);
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#else
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#if defined(LINUX) || defined(FREEBSD) || defined(MACOSX)
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delete m_offlineGL;
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#endif
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#endif
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}
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public:
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// init a BITMAPINFO structure
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#ifdef _WIN32
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void initBITMAPINFO(BITMAPINFO &info, int width, int height, int bpp) {
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memset(&info, 0, sizeof(BITMAPINFOHEADER));
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info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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info.bmiHeader.biWidth = width;
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info.bmiHeader.biHeight = height;
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info.bmiHeader.biPlanes = 1;
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info.bmiHeader.biBitCount = bpp;
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info.bmiHeader.biCompression = BI_RGB;
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info.bmiHeader.biSizeImage = 0;
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info.bmiHeader.biXPelsPerMeter = 1000;
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info.bmiHeader.biYPelsPerMeter = 1000;
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info.bmiHeader.biClrUsed = 0;
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info.bmiHeader.biClrImportant = 0;
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}
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void *m_offData;
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HDC m_offHdc;
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HBITMAP m_offDIB;
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HDC m_offDC;
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HGDIOBJ m_oldobj;
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HGLRC m_hglRC;
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BITMAPINFO m_info;
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#else
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#if defined(LINUX) || defined(FREEBSD) || defined(MACOSX)
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TOfflineGL *m_offlineGL;
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#endif
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#endif
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};
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#endif
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