X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=Source%2FOpenGL_Windows.cpp;h=c78dc28755817be7376ad9edb5c1d5cedeb76800;hb=94df0906c159318cb39bb4ee063336ba3cf51ccb;hp=2f92938789c3df346b2195183bbbf06eac6f6c80;hpb=adaf84d76926538d8235c721169a8d8346dff87b;p=lugaru.git diff --git a/Source/OpenGL_Windows.cpp b/Source/OpenGL_Windows.cpp index 2f92938..c78dc28 100644 --- a/Source/OpenGL_Windows.cpp +++ b/Source/OpenGL_Windows.cpp @@ -1,61 +1,46 @@ /* Copyright (C) 2003, 2010 - Wolfire Games +Copyright (C) 2010-2016 - Lugaru contributors (see AUTHORS file) This file is part of Lugaru. -Lugaru is free software; you can redistribute it and/or -modify it under the terms of the GNU General Public License -as published by the Free Software Foundation; either version 2 -of the License, or (at your option) any later version. +Lugaru is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. -This program is distributed in the hope that it will be useful, +Lugaru is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - -See the GNU General Public License for more details. +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +along with Lugaru. If not, see . */ - -#ifdef WIN32 -#define UINT8 WIN32API_UINT8 -#define UINT16 WIN32API_UINT16 -#define boolean WIN32API_boolean -#include -#undef UINT8 -#undef UINT16 -#undef boolean -#endif - - +#include +#include +#include +#include +#include +#include +#include +#include "gamegl.h" +#include "MacCompatibility.h" +#include "Settings.h" #include "Game.h" -extern "C" { -#include "zlib.h" -#include "png.h" -#ifdef WIN32 -#define INT32 INT32_jpeg -#include "jpeglib.h" -#undef INT32 -#else -#include "jpeglib.h" -#endif -} using namespace Game; -static bool load_image(const char * fname, TGAImageRec & tex); -static bool load_png(const char * fname, TGAImageRec & tex); -static bool load_jpg(const char * fname, TGAImageRec & tex); -bool save_image(const char * fname); -static bool save_png(const char * fname); - - #include "openal_wrapper.h" +#ifdef WIN32 +#include +#include +#include "win-res/resource.h" +#endif + extern float multiplier; extern float sps; extern float realmultiplier; @@ -63,49 +48,19 @@ extern int slomo; extern bool cellophane; extern float texdetail; -extern bool osx; extern bool freeze; extern bool stillloading; extern int mainmenu; -/*extern*/ -bool gameFocused; extern float slomospeed; extern float slomofreq; +extern bool visibleloading; - - -#include -#include -#include -#include -#include -#include "gamegl.h" -#include "MacCompatibility.h" -#include "Settings.h" - -#ifdef WIN32 -#include -#include "win-res/resource.h" -#endif +extern SDL_Window *sdlwindow; using namespace std; -SDL_Rect **resolutions = NULL; -static SDL_Rect rect_1024_768 = { 0, 0, 1024, 768 }; -static SDL_Rect rect_800_600 = { 0, 0, 800, 600 }; -static SDL_Rect rect_640_480 = { 0, 0, 640, 480 }; -static SDL_Rect *hardcoded_resolutions[] = { - &rect_1024_768, - &rect_800_600, - &rect_640_480, - NULL -}; - -Boolean SetUp (); -void DoUpdate (); - -void CleanUp (void); +set> resolutions; // statics/globals (internal only) ------------------------------------------ @@ -114,6 +69,7 @@ void CleanUp (void); #pragma warning(disable: 4273) #endif +#ifndef __MINGW32__ // FIXME: Temporary workaround for GL-8 #define GL_FUNC(ret,fn,params,call,rt) \ extern "C" { \ static ret (GLAPIENTRY *p##fn) params = NULL; \ @@ -121,6 +77,7 @@ void CleanUp (void); } #include "glstubs.h" #undef GL_FUNC +#endif // __MINGW32__ #ifdef _MSC_VER #pragma warning(pop) @@ -139,17 +96,21 @@ static bool lookup_glsym(const char *funcname, void **func) static bool lookup_all_glsyms(void) { bool retval = true; +#ifndef __MINGW32__ // FIXME: Temporary workaround for GL-8 #define GL_FUNC(ret,fn,params,call,rt) \ if (!lookup_glsym(#fn, (void **) &p##fn)) retval = false; #include "glstubs.h" #undef GL_FUNC +#endif // __MINGW32__ return retval; } +#ifndef __MINGW32__ // FIXME: Temporary workaround for GL-8 static void GLAPIENTRY glDeleteTextures_doNothing(GLsizei n, const GLuint *textures) { // no-op. } +#endif // __MINGW32__ #ifdef MessageBox #undef MessageBox @@ -161,12 +122,8 @@ static void GLAPIENTRY glDeleteTextures_doNothing(GLsizei n, const GLuint *textu int kContextWidth; int kContextHeight; -Boolean gDone = false; - -#ifndef __MINGW32__ static int _argc = 0; static char **_argv = NULL; -#endif bool cmdline(const char *cmd) { @@ -194,7 +151,6 @@ void initGL() glDisable( GL_ALPHA_TEST); glDisable( GL_BLEND); glDisable( GL_DEPTH_TEST); - //glDisable( GL_DITHER); glDisable( GL_FOG); glDisable( GL_LIGHTING); glDisable( GL_LOGIC_OP); @@ -215,13 +171,11 @@ void initGL() glClearDepth( 1.0f); glDepthFunc( GL_LEQUAL); glDepthMask( GL_TRUE); - //glDepthRange( FRONT_CLIP, BACK_CLIP); glEnable( GL_DEPTH_TEST); glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glCullFace( GL_FRONT); glEnable( GL_CULL_FACE); glEnable( GL_LIGHTING); - //glEnable( GL_LIGHT_MODEL_AMBIENT); glEnable( GL_DITHER); glEnable( GL_COLOR_MATERIAL); glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); @@ -236,47 +190,49 @@ void initGL() } } -static void toggleFullscreen() +void toggleFullscreen() { - if (!SDL_WM_ToggleFullScreen(SDL_GetVideoSurface())) { - SDL_Surface* screen = SDL_GetVideoSurface(); - Uint32 flags = screen->flags; - screen = SDL_SetVideoMode(0, 0, 0, flags ^ SDL_FULLSCREEN); - if (!screen) - screen = SDL_SetVideoMode(0, 0, 0, flags); - if (!screen) - exit(1); - //reload opengl state - initGL(); - Texture::reloadAll(); - if (text) - text->BuildFont(); - if (firstload) { - screentexture = 0; - LoadScreenTexture(); - } - screentexture2 = 0; + fullscreen = !fullscreen; + Uint32 flags = SDL_GetWindowFlags(sdlwindow); + if (flags & SDL_WINDOW_FULLSCREEN) { + flags &= ~SDL_WINDOW_FULLSCREEN; + } else { + flags |= SDL_WINDOW_FULLSCREEN; } + SDL_SetWindowFullscreen(sdlwindow, flags); } -static void sdlEventProc(const SDL_Event &e) +SDL_bool sdlEventProc(const SDL_Event &e) { switch (e.type) { - case SDL_MOUSEMOTION: - deltah += e.motion.xrel; - deltav += e.motion.yrel; + case SDL_QUIT: + return SDL_FALSE; + + case SDL_WINDOWEVENT: + if (e.window.event == SDL_WINDOWEVENT_CLOSE) { + return SDL_FALSE; + } break; - case SDL_KEYDOWN: - if ((e.key.keysym.sym == SDLK_g) && - (e.key.keysym.mod & KMOD_CTRL) && - !(SDL_GetVideoSurface()->flags & SDL_FULLSCREEN) ) { - SDL_WM_GrabInput( ((SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON) ? SDL_GRAB_OFF : SDL_GRAB_ON) ); - } else if ( (e.key.keysym.sym == SDLK_RETURN) && (e.key.keysym.mod & KMOD_ALT) ) { - toggleFullscreen(); - } + case SDL_MOUSEMOTION: + deltah += e.motion.xrel; + deltav += e.motion.yrel; + break; + + case SDL_KEYDOWN: + if ((e.key.keysym.scancode == SDL_SCANCODE_G) && + (e.key.keysym.mod & KMOD_CTRL)) { + SDL_bool mode = SDL_TRUE; + if ((SDL_GetWindowFlags(sdlwindow) & SDL_WINDOW_FULLSCREEN) == 0) + mode = (SDL_GetWindowGrab(sdlwindow) ? SDL_FALSE : SDL_TRUE); + SDL_SetWindowGrab(sdlwindow, mode); + SDL_SetRelativeMouseMode(mode); + } else if ( (e.key.keysym.scancode == SDL_SCANCODE_RETURN) && (e.key.keysym.mod & KMOD_ALT) ) { + toggleFullscreen(); + } break; } + return SDL_TRUE; } @@ -285,13 +241,10 @@ static void sdlEventProc(const SDL_Event &e) static Point gMidPoint; -Boolean SetUp () +bool SetUp () { - char string[10]; - LOGFUNC; - osx = 0; cellophane = 0; texdetail = 4; slomospeed = 0.25; @@ -318,84 +271,97 @@ Boolean SetUp () return false; } - SDL_Rect **res = SDL_ListModes(NULL, SDL_FULLSCREEN | SDL_OPENGL); - if ( (res == NULL) || (res == ((SDL_Rect **) - 1)) || (res[0] == NULL) || (res[0]->w < 640) || (res[0]->h < 480) ) - res = hardcoded_resolutions; - - // reverse list (it was sorted biggest to smallest by SDL)... - int count; - for (count = 0; res[count]; count++) { - if ((res[count]->w < 640) || (res[count]->h < 480)) - break; // sane lower limit. + for (int displayIdx = 0; displayIdx < SDL_GetNumVideoDisplays(); ++displayIdx) { + for (int i = 0; i < SDL_GetNumDisplayModes(displayIdx); ++i) { + SDL_DisplayMode mode; + if (SDL_GetDisplayMode(displayIdx, i, &mode) == -1) + continue; + if ((mode.w < 640) || (mode.h < 480)) + continue; // sane lower limit. + pair resolution(mode.w, mode.h); + resolutions.insert(resolution); + } } - static SDL_Rect *resolutions_block = NULL; - resolutions_block = (SDL_Rect*) realloc(resolutions_block, sizeof (SDL_Rect) * count); - resolutions = (SDL_Rect**) realloc(resolutions, sizeof (SDL_Rect *) * (count + 1)); - if ((resolutions_block == NULL) || (resolutions == NULL)) { + if (resolutions.empty()) { + const std::string error = "No suitable video resolutions found."; + cerr << error << endl; + SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Lugaru init failed!", error.c_str(), NULL); SDL_Quit(); - fprintf(stderr, "Out of memory!\n"); return false; } - resolutions[count--] = NULL; - for (int i = 0; count >= 0; i++, count--) { - memcpy(&resolutions_block[count], res[i], sizeof (SDL_Rect)); - resolutions[count] = &resolutions_block[count]; - } - if (cmdline("showresolutions")) { - printf("Resolutions we think are okay:\n"); - for (int i = 0; resolutions[i]; i++) - printf(" %d x %d\n", (int) resolutions[i]->w, (int) resolutions[i]->h); + printf("Available resolutions:\n"); + for (auto resolution = resolutions.begin(); resolution != resolutions.end(); resolution++) { + printf(" %d x %d\n", (int) resolution->first, (int) resolution->second); + } } - Uint32 sdlflags = SDL_OPENGL; - - if (!cmdline("windowed")) - sdlflags |= SDL_FULLSCREEN; - - SDL_WM_SetCaption("Lugaru", "Lugaru"); - - SDL_ShowCursor(0); - SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1); -#if SDL_VERSION_ATLEAST(1, 2, 10) - SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, vblsync); -#endif - if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL) { - fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError()); + Uint32 sdlflags = SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN; + if ((fullscreen || cmdline("fullscreen")) && !cmdline("windowed")) { + fullscreen = 1; + sdlflags |= SDL_WINDOW_FULLSCREEN; + } + if (!cmdline("nomousegrab")) + sdlflags |= SDL_WINDOW_INPUT_GRABBED; + + sdlwindow = SDL_CreateWindow("Lugaru", SDL_WINDOWPOS_CENTERED_DISPLAY(0), SDL_WINDOWPOS_CENTERED_DISPLAY(0), + kContextWidth, kContextHeight, sdlflags); + + if (!sdlwindow) { + fprintf(stderr, "SDL_CreateWindow() failed: %s\n", SDL_GetError()); fprintf(stderr, "forcing 640x480...\n"); kContextWidth = 640; kContextHeight = 480; - if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL) { - fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError()); + sdlwindow = SDL_CreateWindow("Lugaru", SDL_WINDOWPOS_CENTERED_DISPLAY(0), SDL_WINDOWPOS_CENTERED_DISPLAY(0), + kContextWidth, kContextHeight, sdlflags); + if (!sdlwindow) { + fprintf(stderr, "SDL_CreateWindow() failed: %s\n", SDL_GetError()); fprintf(stderr, "forcing 640x480 windowed mode...\n"); - sdlflags &= ~SDL_FULLSCREEN; - if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL) { - fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError()); + sdlflags &= ~SDL_WINDOW_FULLSCREEN; + sdlwindow = SDL_CreateWindow("Lugaru", SDL_WINDOWPOS_CENTERED_DISPLAY(0), SDL_WINDOWPOS_CENTERED_DISPLAY(0), + kContextWidth, kContextHeight, sdlflags); + + if (!sdlwindow) { + fprintf(stderr, "SDL_CreateWindow() failed: %s\n", SDL_GetError()); return false; } } } - int dblbuf = 0; - if ((SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &dblbuf) == -1) || (!dblbuf)) { - fprintf(stderr, "Failed to get double buffered GL context!\n"); + SDL_GLContext glctx = SDL_GL_CreateContext(sdlwindow); + if (!glctx) { + fprintf(stderr, "SDL_GL_CreateContext() failed: %s\n", SDL_GetError()); SDL_Quit(); return false; } + SDL_GL_MakeCurrent(sdlwindow, glctx); + if (!lookup_all_glsyms()) { + fprintf(stderr, "Missing required OpenGL functions.\n"); SDL_Quit(); return false; } - if (!cmdline("nomousegrab")) - SDL_WM_GrabInput(SDL_GRAB_ON); + int dblbuf = 0; + if ((SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &dblbuf) == -1) || (!dblbuf)) + { + fprintf(stderr, "Failed to get a double-buffered context.\n"); + SDL_Quit(); + return false; + } + if (SDL_GL_SetSwapInterval(-1) == -1) // try swap_tear first. + SDL_GL_SetSwapInterval(1); + + SDL_ShowCursor(0); + if (!cmdline("nomousegrab")) + SDL_SetRelativeMouseMode(SDL_TRUE); initGL(); @@ -410,6 +376,12 @@ Boolean SetUp () newscreenwidth = screenwidth; newscreenheight = screenheight; + /* If saved resolution is not in the list, add it to the list (so that it’s selectable in the options) */ + pair startresolution(width,height); + if (resolutions.find(startresolution) == resolutions.end()) { + resolutions.insert(startresolution); + } + InitGame(); return true; @@ -564,12 +536,14 @@ void CleanUp (void) LOGFUNC; SDL_Quit(); +#ifndef __MINGW32__ // FIXME: Temporary workaround for GL-8 #define GL_FUNC(ret,fn,params,call,rt) p##fn = NULL; #include "glstubs.h" #undef GL_FUNC // cheat here...static destructors are calling glDeleteTexture() after // the context is destroyed and libGL unloaded by SDL_Quit(). pglDeleteTextures = glDeleteTextures_doNothing; +#endif // __MINGW32__ } @@ -577,7 +551,7 @@ void CleanUp (void) static bool IsFocused() { - return ((SDL_GetAppState() & SDL_APPINPUTFOCUS) != 0); + return ((SDL_GetWindowFlags(sdlwindow) & SDL_WINDOW_INPUT_FOCUS) != 0); } @@ -637,7 +611,6 @@ char *calcBaseDir(const char *argv0) char *retval; char *envr; - const char *ptr = strrchr((char *)argv0, '/'); if (strchr(argv0, '/')) { retval = strdup(argv0); if (retval) @@ -681,10 +654,8 @@ static inline void chdirToAppPath(const char *argv0) int main(int argc, char **argv) { -#ifndef __MINGW32__ _argc = argc; _argv = argv; -#endif // !!! FIXME: we could use a Win32 API for this. --ryan. #ifndef WIN32 @@ -697,15 +668,13 @@ int main(int argc, char **argv) { newGame(); - //ofstream os("error.txt"); - //os.close(); - //ofstream os("log.txt"); - //os.close(); - if (!SetUp ()) return 42; - while (!gDone && !tryquit) { + bool gameDone = false; + bool gameFocused = true; + + while (!gameDone && !tryquit) { if (IsFocused()) { gameFocused = true; @@ -717,11 +686,10 @@ int main(int argc, char **argv) if (!waiting) { // message pump while ( SDL_PollEvent( &e ) ) { - if ( e.type == SDL_QUIT ) { - gDone = true; + if (!sdlEventProc(e)) { + gameDone = true; break; } - sdlEventProc(e); } } @@ -735,12 +703,7 @@ int main(int argc, char **argv) } // game is not in focus, give CPU time to other apps by waiting for messages instead of 'peeking' - SDL_ActiveEvent evt; - SDL_WaitEvent((SDL_Event*)&evt); - if (evt.type == SDL_ACTIVEEVENT && evt.gain == 1) - gameFocused = true; - else if (evt.type == SDL_QUIT) - gDone = true; + SDL_WaitEvent(0); } } @@ -759,278 +722,7 @@ int main(int argc, char **argv) LOG(e); MessageBox(g_windowHandle, error.what(), "ERROR", MB_OK | MB_ICONEXCLAMATION); - } - CleanUp(); - - return -1; -} - - - -// -------------------------------------------------------------------------- - - -bool LoadImage(const char * fname, TGAImageRec & tex) -{ - if ( tex.data == NULL ) - return false; - else - return load_image(fname, tex); -} - -void ScreenShot(const char * fname) -{ - -} - - - -static bool load_image(const char *file_name, TGAImageRec &tex) -{ - const char *ptr = strrchr((char *)file_name, '.'); - if (ptr) { - if (strcasecmp(ptr + 1, "png") == 0) - return load_png(file_name, tex); - else if (strcasecmp(ptr + 1, "jpg") == 0) - return load_jpg(file_name, tex); - } - - STUBBED("Unsupported image type"); - return false; -} - - -struct my_error_mgr { - struct jpeg_error_mgr pub; /* "public" fields */ - jmp_buf setjmp_buffer; /* for return to caller */ -}; -typedef struct my_error_mgr * my_error_ptr; - - -static void my_error_exit(j_common_ptr cinfo) -{ - struct my_error_mgr *err = (struct my_error_mgr *)cinfo->err; - longjmp(err->setjmp_buffer, 1); -} - -/* stolen from public domain example.c code in libjpg distribution. */ -static bool load_jpg(const char *file_name, TGAImageRec &tex) -{ - struct jpeg_decompress_struct cinfo; - struct my_error_mgr jerr; - JSAMPROW buffer[1]; /* Output row buffer */ - int row_stride; /* physical row width in output buffer */ - FILE *infile = fopen(file_name, "rb"); - - if (infile == NULL) - return false; - - cinfo.err = jpeg_std_error(&jerr.pub); - jerr.pub.error_exit = my_error_exit; - if (setjmp(jerr.setjmp_buffer)) { - jpeg_destroy_decompress(&cinfo); - fclose(infile); - return false; + return -1; } - - jpeg_create_decompress(&cinfo); - jpeg_stdio_src(&cinfo, infile); - (void) jpeg_read_header(&cinfo, TRUE); - - cinfo.out_color_space = JCS_RGB; - cinfo.quantize_colors = 0; - (void) jpeg_calc_output_dimensions(&cinfo); - (void) jpeg_start_decompress(&cinfo); - - row_stride = cinfo.output_width * cinfo.output_components; - tex.sizeX = cinfo.output_width; - tex.sizeY = cinfo.output_height; - tex.bpp = 24; - - while (cinfo.output_scanline < cinfo.output_height) { - buffer[0] = (JSAMPROW)(char *)tex.data + - ((cinfo.output_height - 1) - cinfo.output_scanline) * row_stride; - (void) jpeg_read_scanlines(&cinfo, buffer, 1); - } - - (void) jpeg_finish_decompress(&cinfo); - jpeg_destroy_decompress(&cinfo); - fclose(infile); - - return true; } - - -/* stolen from public domain example.c code in libpng distribution. */ -static bool load_png(const char *file_name, TGAImageRec &tex) -{ - bool hasalpha = false; - png_structp png_ptr = NULL; - png_infop info_ptr = NULL; - png_uint_32 width, height; - int bit_depth, color_type, interlace_type; - png_byte **rows = NULL; - bool retval = false; - png_byte **row_pointers = NULL; - FILE *fp = fopen(file_name, "rb"); - - if (fp == NULL) { - cerr << file_name << " not found" << endl; - return(NULL); - } - - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (png_ptr == NULL) - goto png_done; - - info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) - goto png_done; - - if (setjmp(png_jmpbuf(png_ptr))) - goto png_done; - - png_init_io(png_ptr, fp); - png_read_png(png_ptr, info_ptr, - PNG_TRANSFORM_STRIP_16 | PNG_TRANSFORM_PACKING, - NULL); - png_get_IHDR(png_ptr, info_ptr, &width, &height, - &bit_depth, &color_type, &interlace_type, NULL, NULL); - - if (bit_depth != 8) // transform SHOULD handle this... - goto png_done; - - if (color_type & PNG_COLOR_MASK_PALETTE) // !!! FIXME? - goto png_done; - - if ((color_type & PNG_COLOR_MASK_COLOR) == 0) // !!! FIXME? - goto png_done; - - hasalpha = ((color_type & PNG_COLOR_MASK_ALPHA) != 0); - row_pointers = png_get_rows(png_ptr, info_ptr); - if (!row_pointers) - goto png_done; - - if (!hasalpha) { - png_byte *dst = tex.data; - for (int i = height - 1; i >= 0; i--) { - png_byte *src = row_pointers[i]; - for (int j = 0; j < width; j++) { - dst[0] = src[0]; - dst[1] = src[1]; - dst[2] = src[2]; - dst[3] = 0xFF; - src += 3; - dst += 4; - } - } - } - - else { - png_byte *dst = tex.data; - int pitch = width * 4; - for (int i = height - 1; i >= 0; i--, dst += pitch) - memcpy(dst, row_pointers[i], pitch); - } - - tex.sizeX = width; - tex.sizeY = height; - tex.bpp = 32; - retval = true; - -png_done: - if (!retval) { - cerr << "There was a problem loading " << file_name << endl; - } - png_destroy_read_struct(&png_ptr, &info_ptr, NULL); - if (fp) - fclose(fp); - return (retval); -} - - -bool save_image(const char *file_name) -{ - const char *ptr = strrchr((char *)file_name, '.'); - if (ptr) { - if (strcasecmp(ptr + 1, "png") == 0) - return save_png(file_name); - } - - STUBBED("Unsupported image type"); - return false; -} - - -static bool save_png(const char *file_name) -{ - FILE *fp = NULL; - png_structp png_ptr = NULL; - png_infop info_ptr = NULL; - bool retval = false; - - fp = fopen(file_name, "wb"); - if (fp == NULL) - return false; - - png_bytep *row_pointers = new png_bytep[kContextHeight]; - png_bytep screenshot = new png_byte[kContextWidth * kContextHeight * 3]; - if ((!screenshot) || (!row_pointers)) - goto save_png_done; - - glGetError(); - glReadPixels(0, 0, kContextWidth, kContextHeight, - GL_RGB, GL_UNSIGNED_BYTE, screenshot); - if (glGetError() != GL_NO_ERROR) - goto save_png_done; - - for (int i = 0; i < kContextHeight; i++) - row_pointers[i] = screenshot + ((kContextWidth * ((kContextHeight - 1) - i)) * 3); - - png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (png_ptr == NULL) - goto save_png_done; - - info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) - goto save_png_done; - - if (setjmp(png_jmpbuf(png_ptr))) - goto save_png_done; - - png_init_io(png_ptr, fp); - - if (setjmp(png_jmpbuf(png_ptr))) - goto save_png_done; - - png_set_IHDR(png_ptr, info_ptr, kContextWidth, kContextHeight, - 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, - PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - png_write_info(png_ptr, info_ptr); - - if (setjmp(png_jmpbuf(png_ptr))) - goto save_png_done; - - png_write_image(png_ptr, row_pointers); - - if (setjmp(png_jmpbuf(png_ptr))) - goto save_png_done; - - png_write_end(png_ptr, NULL); - retval = true; - -save_png_done: - png_destroy_write_struct(&png_ptr, &info_ptr); - delete[] screenshot; - delete[] row_pointers; - if (fp) - fclose(fp); - if (!retval) - unlink(ConvertFileName(file_name)); - return retval; -} - - -