#else
// just use libpng and libjpg directly; it's lighter-weight and easier
// to manage the dependencies on Linux...
- #include "png.h"
+ extern "C" {
+ #include "png.h"
+ #include "jpeglib.h"
+ }
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);
+ static bool save_image(const char * fname);
+ static bool save_png(const char * fname);
#endif
// ADDED GWC
#endif
#if USE_SDL
+#define GL_FUNC(ret,fn,params,call,rt) \
+ extern "C" { \
+ static ret GLAPIENTRY (*p##fn) params = NULL; \
+ ret GLAPIENTRY fn params { rt p##fn call; } \
+ }
+#include "glstubs.h"
+#undef GL_FUNC
+
+static bool lookup_glsym(const char *funcname, void **func, const char *libname)
+{
+ *func = SDL_GL_GetProcAddress(funcname);
+ if (*func == NULL)
+ {
+ fprintf(stderr, "Failed to find OpenGL symbol \"%s\" in \"%s\"\n",
+ funcname, libname);
+ return false;
+ }
+ return true;
+}
+
+static bool lookup_all_glsyms(const char *libname)
+{
+ bool retval = true;
+ #define GL_FUNC(ret,fn,params,call,rt) \
+ if (!lookup_glsym(#fn, (void **) &p##fn, libname)) retval = false;
+ #include "glstubs.h"
+ #undef GL_FUNC
+ return retval;
+}
+
+static void GLAPIENTRY glDeleteTextures_doNothing(GLsizei n, const GLuint *textures)
+{
+ // no-op.
+}
+
+
+
void sdlGetCursorPos(POINT *pt)
{
int x, y;
fprintf(stderr, "SDL_Init() failed: %s\n", SDL_GetError());
return false;
}
+
+ const char *libname = "libGL.so.1"; // !!! FIXME: Linux specific!
+ if (SDL_GL_LoadLibrary(libname) == -1)
+ {
+ fprintf(stderr, "SDL_GL_LoadLibrary(\"%s\") failed: %s\n",
+ libname, SDL_GetError());
+ return false;
+ }
+
+ if (!lookup_all_glsyms(libname))
+ return false;
}
- Uint32 sdlflags = SDL_OPENGL;
+ Uint32 sdlflags = SDL_OPENGL; // !!! FIXME: SDL_FULLSCREEN?
SDL_WM_SetCaption("Lugaru", "lugaru");
SDL_ShowCursor(0);
if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
return false;
}
+
+
#elif (defined WIN32)
//------------------------------------------------------------------
// create window
#if USE_SDL
SDL_Quit();
+ #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;
#elif (defined WIN32)
if (hRC)
//ofstream os("log.txt");
//os.close();
- SetUp (game);
+ if (!SetUp (game))
+ return 42;
while (!gDone&&!game.quit&&(!game.tryquit||!game.registered))
{
free(f);
#else
res = load_image(fname, tex);
- if (!res) STUBBED("load_image() failed!");
+ //if (!res) printf("failed to load %s\n", fname);
#endif
return res;
free(f);
#else
- STUBBED("Non-DevIL screenshot");
+ save_image(fname);
#endif
}
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)
{
- // !!! FIXME: write this.
- STUBBED("load_jpg");
- return false;
+ 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;
+ }
+
+ 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)
{
retval = true;
png_done:
- png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
- fclose(fp);
- return (retval);
+ png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
+ if (fp)
+ fclose(fp);
+ return (retval);
}
+
+
+static bool save_image(const char *file_name)
+{
+ char *ptr = strrchr(file_name, '.');
+ if (ptr)
+ {
+ if (stricmp(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;
+}
+
#endif
projects / lugaru.git / blobdiff