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"
30 #include "SDL2/SDL_video.h"
32 SDLRenderer::SDLRenderer() :
36 Renderer::instance_ = this;
38 log_info << "creating SDLRenderer" << std::endl;
39 int width = g_config->window_size.width;
40 int height = g_config->window_size.height;
43 if(g_config->use_fullscreen)
45 flags |= SDL_WINDOW_FULLSCREEN;
46 width = g_config->fullscreen_size.width;
47 height = g_config->fullscreen_size.height;
50 int ret = SDL_CreateWindowAndRenderer(width, height, flags,
54 std::stringstream msg;
55 msg << "Couldn't set video mode (" << width << "x" << height
56 << "): " << SDL_GetError();
57 throw std::runtime_error(msg.str());
60 SDL_RendererInfo info;
61 if (SDL_GetRendererInfo(renderer, &info) != 0)
63 log_warning << "Couldn't get RendererInfo: " << SDL_GetError() << std::endl;
67 log_info << "SDL_Renderer: " << info.name << std::endl;
68 log_info << "SDL_RendererFlags: " << std::endl;
69 if (info.flags & SDL_RENDERER_SOFTWARE) log_info << " SDL_RENDERER_SOFTWARE" << std::endl;
70 if (info.flags & SDL_RENDERER_ACCELERATED) log_info << " SDL_RENDERER_ACCELERATED" << std::endl;
71 if (info.flags & SDL_RENDERER_PRESENTVSYNC) log_info << " SDL_RENDERER_PRESENTVSYNC" << std::endl;
72 if (info.flags & SDL_RENDERER_TARGETTEXTURE) log_info << " SDL_RENDERER_TARGETTEXTURE" << std::endl;
73 log_info << "Texture Formats: " << std::endl;
74 for(size_t i = 0; i < info.num_texture_formats; ++i)
76 log_info << " " << SDL_GetPixelFormatName(info.texture_formats[i]) << std::endl;
78 log_info << "Max Texture Width: " << info.max_texture_width << std::endl;
79 log_info << "Max Texture Height: " << info.max_texture_height << std::endl;
82 if(texture_manager == 0)
83 texture_manager = new TextureManager();
86 SDLRenderer::~SDLRenderer()
88 SDL_DestroyRenderer(renderer);
89 SDL_DestroyWindow(window);
93 SDLRenderer::draw_surface(const DrawingRequest& request)
95 //FIXME: support parameters request.angle, request.blend
96 const Surface* surface = (const Surface*) request.request_data;
97 boost::shared_ptr<SDLTexture> sdltexture = boost::dynamic_pointer_cast<SDLTexture>(surface->get_texture());
100 dst_rect.x = request.pos.x;
101 dst_rect.y = request.pos.y;
102 dst_rect.w = sdltexture->get_image_width();
103 dst_rect.h = sdltexture->get_image_height();
105 Uint8 r = static_cast<Uint8>(request.color.red * 255);
106 Uint8 g = static_cast<Uint8>(request.color.green * 255);
107 Uint8 b = static_cast<Uint8>(request.color.blue * 255);
108 Uint8 a = static_cast<Uint8>(request.color.alpha * request.alpha * 255);
109 SDL_SetTextureColorMod(sdltexture->get_texture(), r, g, b);
110 SDL_SetTextureAlphaMod(sdltexture->get_texture(), a);
112 if (surface->get_flipx())
114 SDL_RenderCopyEx(renderer, sdltexture->get_texture(), NULL, &dst_rect, 0, NULL, SDL_FLIP_HORIZONTAL);
118 switch(request.drawing_effect)
121 SDL_RenderCopyEx(renderer, sdltexture->get_texture(), NULL, &dst_rect, 0, NULL, SDL_FLIP_VERTICAL);
124 case HORIZONTAL_FLIP:
125 SDL_RenderCopyEx(renderer, sdltexture->get_texture(), NULL, &dst_rect, 0, NULL, SDL_FLIP_HORIZONTAL);
130 SDL_RenderCopy(renderer, sdltexture->get_texture(), NULL, &dst_rect);
137 SDLRenderer::draw_surface_part(const DrawingRequest& request)
139 //FIXME: support parameters request.angle, request.blend
140 const SurfacePartRequest* surface = (const SurfacePartRequest*) request.request_data;
141 const SurfacePartRequest* surfacepartrequest = (SurfacePartRequest*) request.request_data;
143 boost::shared_ptr<SDLTexture> sdltexture = boost::dynamic_pointer_cast<SDLTexture>(surface->surface->get_texture());
146 src_rect.x = surfacepartrequest->source.x;
147 src_rect.y = surfacepartrequest->source.y;
148 src_rect.w = surfacepartrequest->size.x;
149 src_rect.h = surfacepartrequest->size.y;
152 dst_rect.x = request.pos.x;
153 dst_rect.y = request.pos.y;
154 dst_rect.w = surfacepartrequest->size.x;
155 dst_rect.h = surfacepartrequest->size.y;
157 Uint8 r = static_cast<Uint8>(request.color.red * 255);
158 Uint8 g = static_cast<Uint8>(request.color.green * 255);
159 Uint8 b = static_cast<Uint8>(request.color.blue * 255);
160 Uint8 a = static_cast<Uint8>(request.color.alpha * request.alpha * 255);
161 SDL_SetTextureColorMod(sdltexture->get_texture(), r, g, b);
162 SDL_SetTextureAlphaMod(sdltexture->get_texture(), a);
164 if (surface->surface->get_flipx())
166 SDL_RenderCopyEx(renderer, sdltexture->get_texture(), &src_rect, &dst_rect, 0, NULL, SDL_FLIP_HORIZONTAL);
170 switch(request.drawing_effect)
173 SDL_RenderCopyEx(renderer, sdltexture->get_texture(), &src_rect, &dst_rect, 0, NULL, SDL_FLIP_VERTICAL);
176 case HORIZONTAL_FLIP:
177 SDL_RenderCopyEx(renderer, sdltexture->get_texture(), &src_rect, &dst_rect, 0, NULL, SDL_FLIP_HORIZONTAL);
182 SDL_RenderCopy(renderer, sdltexture->get_texture(), &src_rect, &dst_rect);
189 SDLRenderer::draw_gradient(const DrawingRequest& request)
191 const GradientRequest* gradientrequest
192 = (GradientRequest*) request.request_data;
193 const Color& top = gradientrequest->top;
194 const Color& bottom = gradientrequest->bottom;
198 SDL_GetWindowSize(window, &w, &h);
200 // calculate the maximum number of steps needed for the gradient
201 int n = static_cast<int>(std::max(std::max(fabsf(top.red - bottom.red),
202 fabsf(top.green - bottom.green)),
203 std::max(fabsf(top.blue - bottom.blue),
204 fabsf(top.alpha - bottom.alpha))) * 255);
205 for(int i = 0; i < n; ++i)
211 rect.h = (h * (i+1) / n) - rect.y;
213 float p = static_cast<float>(i+1) / static_cast<float>(n);
214 Uint8 r = static_cast<Uint8>(((1.0f - p) * top.red + p * bottom.red) * 255);
215 Uint8 g = static_cast<Uint8>(((1.0f - p) * top.green + p * bottom.green) * 255);
216 Uint8 b = static_cast<Uint8>(((1.0f - p) * top.blue + p * bottom.blue) * 255);
217 Uint8 a = static_cast<Uint8>(((1.0f - p) * top.alpha + p * bottom.alpha) * 255);
219 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
220 SDL_SetRenderDrawColor(renderer, r, g, b, a);
221 SDL_RenderFillRect(renderer, &rect);
226 SDLRenderer::draw_filled_rect(const DrawingRequest& request)
228 const FillRectRequest* fillrectrequest
229 = (FillRectRequest*) request.request_data;
232 rect.x = request.pos.x;
233 rect.y = request.pos.y;
234 rect.w = fillrectrequest->size.x;
235 rect.h = fillrectrequest->size.y;
237 Uint8 r = static_cast<Uint8>(fillrectrequest->color.red * 255);
238 Uint8 g = static_cast<Uint8>(fillrectrequest->color.green * 255);
239 Uint8 b = static_cast<Uint8>(fillrectrequest->color.blue * 255);
240 Uint8 a = static_cast<Uint8>(fillrectrequest->color.alpha * 255);
242 int radius = std::min(std::min(rect.h / 2, rect.w / 2),
243 static_cast<int>(fillrectrequest->radius));
249 // rounded top and bottom parts
250 std::vector<SDL_Rect> rects;
251 rects.reserve(2*slices + 1);
252 for(int i = 0; i < slices; ++i)
254 float p = (static_cast<float>(i) + 0.5f) / static_cast<float>(slices);
255 int xoff = radius - static_cast<int>(sqrtf(1.0f - p*p) * radius);
258 tmp.x = rect.x + xoff;
259 tmp.y = rect.y + (radius - i);
260 tmp.w = rect.w - 2*(xoff);
262 rects.push_back(tmp);
265 tmp2.x = rect.x + xoff;
266 tmp2.y = rect.y + rect.h - radius + i;
267 tmp2.w = rect.w - 2*xoff;
272 rects.push_back(tmp2);
276 if (2*radius < rect.h)
281 tmp.y = rect.y + radius + 1;
283 tmp.h = rect.h - 2*radius - 1;
284 rects.push_back(tmp);
287 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
288 SDL_SetRenderDrawColor(renderer, r, g, b, a);
289 SDL_RenderFillRects(renderer, &*rects.begin(), rects.size());
293 if((rect.w != 0) && (rect.h != 0))
295 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
296 SDL_SetRenderDrawColor(renderer, r, g, b, a);
297 SDL_RenderFillRect(renderer, &rect);
303 SDLRenderer::draw_inverse_ellipse(const DrawingRequest& request)
305 const InverseEllipseRequest* ellipse = (InverseEllipseRequest*)request.request_data;
309 SDL_GetWindowSize(window, &window_w, &window_h);
311 float x = request.pos.x;
312 float w = ellipse->size.x;
313 float h = ellipse->size.y;
315 int top = request.pos.y - (h / 2);
317 const int max_slices = 256;
318 SDL_Rect rects[2*max_slices+2];
319 int slices = std::min(static_cast<int>(ellipse->size.y), max_slices);
320 for(int i = 0; i < slices; ++i)
322 float p = ((static_cast<float>(i) + 0.5f) / static_cast<float>(slices)) * 2.0f - 1.0f;
323 int xoff = static_cast<int>(sqrtf(1.0f - p*p) * w / 2);
325 SDL_Rect& left = rects[2*i+0];
326 SDL_Rect& right = rects[2*i+1];
329 left.y = top + (i * h / slices);
331 left.h = (top + ((i+1) * h / slices)) - left.y;
335 right.w = window_w - right.x;
339 SDL_Rect& top_rect = rects[2*slices+0];
340 SDL_Rect& bottom_rect = rects[2*slices+1];
344 top_rect.w = window_w;
348 bottom_rect.y = top + h;
349 bottom_rect.w = window_w;
350 bottom_rect.h = window_h - bottom_rect.y;
352 Uint8 r = static_cast<Uint8>(ellipse->color.red * 255);
353 Uint8 g = static_cast<Uint8>(ellipse->color.green * 255);
354 Uint8 b = static_cast<Uint8>(ellipse->color.blue * 255);
355 Uint8 a = static_cast<Uint8>(ellipse->color.alpha * 255);
357 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
358 SDL_SetRenderDrawColor(renderer, r, g, b, a);
359 SDL_RenderFillRects(renderer, rects, 2*slices+2);
363 SDLRenderer::do_take_screenshot()
365 // [Christoph] TODO: Yes, this method also takes care of the actual disk I/O. Split it?
368 if (SDL_GetRendererOutputSize(renderer, &width, &height) != 0)
370 log_warning << "SDL_GetRenderOutputSize failed: " << SDL_GetError() << std::endl;
374 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
375 Uint32 rmask = 0xff000000;
376 Uint32 gmask = 0x00ff0000;
377 Uint32 bmask = 0x0000ff00;
378 Uint32 amask = 0x000000ff;
380 Uint32 rmask = 0x000000ff;
381 Uint32 gmask = 0x0000ff00;
382 Uint32 bmask = 0x00ff0000;
383 Uint32 amask = 0xff000000;
385 SDL_Surface* surface = SDL_CreateRGBSurface(0, width, height, 32,
386 rmask, gmask, bmask, amask);
389 log_warning << "SDL_CreateRGBSurface failed: " << SDL_GetError() << std::endl;
393 int ret = SDL_RenderReadPixels(renderer, NULL,
394 SDL_PIXELFORMAT_ABGR8888,
399 log_warning << "SDL_RenderReadPixels failed: " << SDL_GetError() << std::endl;
404 static const std::string writeDir = PHYSFS_getWriteDir();
405 static const std::string dirSep = PHYSFS_getDirSeparator();
406 static const std::string baseName = "screenshot";
407 static const std::string fileExt = ".bmp";
408 std::string fullFilename;
409 for (int num = 0; num < 1000; num++) {
410 std::ostringstream oss;
412 oss << std::setw(3) << std::setfill('0') << num;
414 std::string fileName = oss.str();
415 fullFilename = writeDir + dirSep + fileName;
416 if (!PHYSFS_exists(fileName.c_str())) {
417 SDL_SaveBMP(surface, fullFilename.c_str());
418 log_debug << "Wrote screenshot to \"" << fullFilename << "\"" << std::endl;
422 log_warning << "Did not save screenshot, because all files up to \"" << fullFilename << "\" already existed" << std::endl;
431 SDL_RenderPresent(renderer);
435 SDLRenderer::resize(int, int)
441 SDLRenderer::set_gamma(float gamma)
444 SDL_CalculateGammaRamp(gamma, ramp);
445 SDL_SetWindowGammaRamp(window, ramp, ramp, ramp);