2 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
3 // Updated by GiBy 2013 for SDL2 <giby_the_kid@yahoo.fr>
5 // This program is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
10 // This program is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "video/sdl/sdl_renderer.hpp"
20 #include "util/log.hpp"
21 #include "video/drawing_request.hpp"
22 #include "video/sdl/sdl_surface_data.hpp"
23 #include "video/sdl/sdl_texture.hpp"
24 #include "video/sdl/sdl_painter.hpp"
31 #include "SDL2/SDL_video.h"
33 #include "video/util.hpp"
35 SDLRenderer::SDLRenderer() :
41 Renderer::instance_ = this;
44 if (SDL_GetDesktopDisplayMode(0, &mode) != 0)
46 log_warning << "Couldn't get desktop display mode: " << SDL_GetError() << std::endl;
50 desktop_size = Size(mode.w, mode.h);
53 log_info << "creating SDLRenderer" << std::endl;
54 int width = g_config->window_size.width;
55 int height = g_config->window_size.height;
57 int flags = SDL_WINDOW_RESIZABLE;
58 if(g_config->use_fullscreen)
60 if (g_config->fullscreen_size == Size(0, 0))
62 flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
63 width = g_config->window_size.width;
64 height = g_config->window_size.height;
68 flags |= SDL_WINDOW_FULLSCREEN;
69 width = g_config->fullscreen_size.width;
70 height = g_config->fullscreen_size.height;
75 SCREEN_HEIGHT = height;
82 SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "2");
84 int ret = SDL_CreateWindowAndRenderer(width, height, flags,
88 std::stringstream msg;
89 msg << "Couldn't set video mode (" << width << "x" << height
90 << "): " << SDL_GetError();
91 throw std::runtime_error(msg.str());
94 SDL_RendererInfo info;
95 if (SDL_GetRendererInfo(renderer, &info) != 0)
97 log_warning << "Couldn't get RendererInfo: " << SDL_GetError() << std::endl;
101 log_info << "SDL_Renderer: " << info.name << std::endl;
102 log_info << "SDL_RendererFlags: " << std::endl;
103 if (info.flags & SDL_RENDERER_SOFTWARE) log_info << " SDL_RENDERER_SOFTWARE" << std::endl;
104 if (info.flags & SDL_RENDERER_ACCELERATED) log_info << " SDL_RENDERER_ACCELERATED" << std::endl;
105 if (info.flags & SDL_RENDERER_PRESENTVSYNC) log_info << " SDL_RENDERER_PRESENTVSYNC" << std::endl;
106 if (info.flags & SDL_RENDERER_TARGETTEXTURE) log_info << " SDL_RENDERER_TARGETTEXTURE" << std::endl;
107 log_info << "Texture Formats: " << std::endl;
108 for(size_t i = 0; i < info.num_texture_formats; ++i)
110 log_info << " " << SDL_GetPixelFormatName(info.texture_formats[i]) << std::endl;
112 log_info << "Max Texture Width: " << info.max_texture_width << std::endl;
113 log_info << "Max Texture Height: " << info.max_texture_height << std::endl;
116 if(texture_manager == 0)
117 texture_manager = new TextureManager();
119 g_config->window_size = Size(width, height);
123 SDLRenderer::~SDLRenderer()
125 SDL_DestroyRenderer(renderer);
126 SDL_DestroyWindow(window);
130 SDLRenderer::draw_surface(const DrawingRequest& request)
132 SDLPainter::draw_surface(renderer, request);
136 SDLRenderer::draw_surface_part(const DrawingRequest& request)
138 SDLPainter::draw_surface_part(renderer, request);
142 SDLRenderer::draw_gradient(const DrawingRequest& request)
144 SDLPainter::draw_gradient(renderer, request);
148 SDLRenderer::draw_filled_rect(const DrawingRequest& request)
150 SDLPainter::draw_filled_rect(renderer, request);
154 SDLRenderer::draw_inverse_ellipse(const DrawingRequest& request)
156 SDLPainter::draw_inverse_ellipse(renderer, request);
160 SDLRenderer::do_take_screenshot()
162 // [Christoph] TODO: Yes, this method also takes care of the actual disk I/O. Split it?
165 if (SDL_GetRendererOutputSize(renderer, &width, &height) != 0)
167 log_warning << "SDL_GetRenderOutputSize failed: " << SDL_GetError() << std::endl;
171 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
172 Uint32 rmask = 0xff000000;
173 Uint32 gmask = 0x00ff0000;
174 Uint32 bmask = 0x0000ff00;
175 Uint32 amask = 0x000000ff;
177 Uint32 rmask = 0x000000ff;
178 Uint32 gmask = 0x0000ff00;
179 Uint32 bmask = 0x00ff0000;
180 Uint32 amask = 0xff000000;
182 SDL_Surface* surface = SDL_CreateRGBSurface(0, width, height, 32,
183 rmask, gmask, bmask, amask);
186 log_warning << "SDL_CreateRGBSurface failed: " << SDL_GetError() << std::endl;
190 int ret = SDL_RenderReadPixels(renderer, NULL,
191 SDL_PIXELFORMAT_ABGR8888,
196 log_warning << "SDL_RenderReadPixels failed: " << SDL_GetError() << std::endl;
201 static const std::string writeDir = PHYSFS_getWriteDir();
202 static const std::string dirSep = PHYSFS_getDirSeparator();
203 static const std::string baseName = "screenshot";
204 static const std::string fileExt = ".bmp";
205 std::string fullFilename;
206 for (int num = 0; num < 1000; num++) {
207 std::ostringstream oss;
209 oss << std::setw(3) << std::setfill('0') << num;
211 std::string fileName = oss.str();
212 fullFilename = writeDir + dirSep + fileName;
213 if (!PHYSFS_exists(fileName.c_str())) {
214 SDL_SaveBMP(surface, fullFilename.c_str());
215 log_debug << "Wrote screenshot to \"" << fullFilename << "\"" << std::endl;
219 log_warning << "Did not save screenshot, because all files up to \"" << fullFilename << "\" already existed" << std::endl;
228 SDL_RenderPresent(renderer);
232 SDLRenderer::resize(int w , int h)
234 g_config->window_size = Size(w, h);
240 SDLRenderer::apply_video_mode()
242 if (!g_config->use_fullscreen)
244 SDL_SetWindowFullscreen(window, 0);
248 if (g_config->fullscreen_size.width == 0 &&
249 g_config->fullscreen_size.height == 0)
251 if (SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP) != 0)
253 log_warning << "failed to switch to desktop fullscreen mode: "
254 << SDL_GetError() << std::endl;
258 log_info << "switched to desktop fullscreen mode" << std::endl;
263 SDL_DisplayMode mode;
264 mode.format = SDL_PIXELFORMAT_RGB888;
265 mode.w = g_config->fullscreen_size.width;
266 mode.h = g_config->fullscreen_size.height;
267 mode.refresh_rate = g_config->fullscreen_refresh_rate;
270 if (SDL_SetWindowDisplayMode(window, &mode) != 0)
272 log_warning << "failed to set display mode: "
273 << mode.w << "x" << mode.h << "@" << mode.refresh_rate << ": "
274 << SDL_GetError() << std::endl;
278 if (SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN) != 0)
280 log_warning << "failed to switch to fullscreen mode: "
281 << mode.w << "x" << mode.h << "@" << mode.refresh_rate << ": "
282 << SDL_GetError() << std::endl;
286 log_info << "switched to fullscreen mode: "
287 << mode.w << "x" << mode.h << "@" << mode.refresh_rate << std::endl;
295 SDLRenderer::apply_viewport()
297 Size target_size = (g_config->use_fullscreen && g_config->fullscreen_size != Size(0, 0)) ?
298 g_config->fullscreen_size :
299 g_config->window_size;
301 float pixel_aspect_ratio = 1.0f;
302 if (g_config->aspect_size != Size(0, 0))
304 pixel_aspect_ratio = calculate_pixel_aspect_ratio(desktop_size,
305 g_config->aspect_size);
307 else if (g_config->use_fullscreen)
309 pixel_aspect_ratio = calculate_pixel_aspect_ratio(desktop_size,
313 // calculate the viewport
314 Size max_size(1280, 800);
315 Size min_size(640, 480);
319 calculate_viewport(min_size, max_size,
322 g_config->magnification,
323 scale, logical_size, viewport);
325 SCREEN_WIDTH = logical_size.width;
326 SCREEN_HEIGHT = logical_size.height;
328 if (viewport.x != 0 || viewport.y != 0)
330 // Clear the screen to avoid garbage in unreachable areas after we
331 // reset the coordinate system
332 SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
333 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
334 SDL_RenderClear(renderer);
335 SDL_RenderPresent(renderer);
336 SDL_RenderClear(renderer);
339 SDL_RenderSetScale(renderer, 1.0f, 1.0f);
340 SDL_RenderSetViewport(renderer, &viewport);
341 SDL_RenderSetScale(renderer, scale.x, scale.y);
345 SDLRenderer::apply_config()
352 SDLRenderer::to_logical(int physical_x, int physical_y)
354 return Vector(static_cast<float>(physical_x - viewport.x) * SCREEN_WIDTH / viewport.w,
355 static_cast<float>(physical_y - viewport.y) * SCREEN_HEIGHT / viewport.h);
359 SDLRenderer::set_gamma(float gamma)
362 SDL_CalculateGammaRamp(gamma, ramp);
363 SDL_SetWindowGammaRamp(window, ramp, ramp, ramp);