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/*
client/video.cc
This file is part of the Osirion project and is distributed under
the terms and conditions of the GNU General Public License version 2
*/
#include <fstream>
#include <sstream>
#include "client/video.h"
#include "client/view.h"
#include "render/render.h"
#include "render/tga.h"
#include "core/core.h"
#include "filesystem/filesystem.h"
#include "sys/sys.h"
#include <SDL/SDL.h>
using namespace render;
namespace client {
namespace video {
int width = 0;
int height = 0;
int width_prev = 0;
int height_prev = 0;
const int width_default = 1024;
const int height_default = 768;
float aspect = 1;
//--- cvars -------------------------------------------------------
core::Cvar *r_width;
core::Cvar *r_height;
core::Cvar *r_fullscreen;
void reset()
{
// recalculate the video aspect
aspect = (float) width / (float) height;
// settup our viewport.
gl::viewport(0, 0, width, height );
// reset the view
view::reset();
}
bool init()
{
con_print << "Initializing video..." << std::endl;
// initialize cvars
r_width = core::Cvar::get("r_width", width_default, core::Cvar::Archive);
r_height = core::Cvar::get("r_height", height_default, core::Cvar::Archive);
r_fullscreen = core::Cvar::get("r_fullscreen", "0", core::Cvar::Archive);
int bpp = 0;
int flags = 0;
if( SDL_InitSubSystem(SDL_INIT_VIDEO) < 0 ) {
con_error << "SDL_InitSubSystem() failed: " << SDL_GetError() << std::endl;
return false;
}
const SDL_VideoInfo* sdl_videoinfo = SDL_GetVideoInfo();
if( !sdl_videoinfo) {
con_error << "SDL_GetVideoInfo() failed: " << SDL_GetError() << std::endl;
return false;
}
width_prev = width;
height_prev = height;
width = (int) r_width->value();
height = (int) r_height->value();
bpp = sdl_videoinfo->vfmt->BitsPerPixel;
SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 );
SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 );
SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 );
SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 );
SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, 2);
SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
if (r_fullscreen->value()) flags = SDL_OPENGL | SDL_FULLSCREEN;
else flags = SDL_OPENGL;
if(!SDL_SetVideoMode(width, height, bpp, flags )) {
con_warn << "Failed to set video mode " << width << "x" << height << "x" << bpp << "bpp" << std::endl;
if (width_prev && height_prev) {
width = width_prev;
height = height_prev;
if(!SDL_SetVideoMode(width, height, bpp, flags )) {
con_error << "Failed to restore video mode " << width << "x" << height << "x" << bpp << "bpp" << std::endl;
return false;
}
} else
return false;
}
con_print << " video mode " << width << "x" << height << "x" << bpp << "bpp" << std::endl;
aspect = (float) width / (float) height;
(*r_width) = width;
(*r_height) = height;
std::string version(core::name());
version += ' ';
version.append(core::version());
SDL_WM_SetCaption(version.c_str(), 0);
render::init();
video::reset();
view::init();
return true;
}
void frame(float seconds)
{
// render a client frame
view::frame(seconds);
SDL_GL_SwapBuffers();
}
void shutdown()
{
con_print << "Shutting down video..." << std::endl;
view::shutdown();
render::shutdown();
width = 0;
height = 0;
SDL_QuitSubSystem(SDL_INIT_VIDEO);
}
void screenshot()
{
int number = 0;
bool available = false;
std::string shortname;
std::string filename;
// make sure the screenshots folder exists
filename.assign(filesystem::writedir);
filename.append("screenshots/");
sys::mkdir(filename);
// find the first available screenshotxxx.tga
do {
std::stringstream nstr;
nstr << number;
shortname.assign(nstr.str());
while(shortname.size() < 3)
shortname.insert(0, 1, '0');
shortname.insert(0, "screenshots/osirion");
shortname.append(".tga");
filename.assign(filesystem::writedir);
filename.append(shortname);
FILE *handle = fopen(filename.c_str(), "r");
if (handle) {
fclose(handle);
number++;
} else {
available = true;
}
} while (!available);
render::Image image((unsigned int)video::width, (unsigned int)video::height, 3);
glReadPixels(0, 0, (GLsizei) video::width, (GLsizei) video::height,
GL_RGB, GL_UNSIGNED_BYTE, (void *) image.data());
render::TGA::save(filename.c_str(), image);
}
} // namespace video
} // namespace client
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