2 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #include "video/sdl/sdl_lightmap.hpp"
20 #include "video/sdl/sdl_surface_data.hpp"
21 #include "video/sdl/sdl_texture.hpp"
22 #include "video/sdl/sdl_renderer.hpp"
23 #include "video/sdl/sdl_painter.hpp"
25 SDLLightmap::SDLLightmap() :
26 renderer(static_cast<SDLRenderer*>(Renderer::instance())->get_sdl_renderer()),
35 height = SCREEN_HEIGHT;
37 SDL_Renderer* renderer = static_cast<SDLRenderer*>(Renderer::instance())->get_sdl_renderer();
38 texture = SDL_CreateTexture(renderer,
39 SDL_PIXELFORMAT_RGB888,
40 SDL_TEXTUREACCESS_TARGET,
44 std::stringstream msg;
45 msg << "Couldn't create lightmap texture: " << SDL_GetError();
46 throw std::runtime_error(msg.str());
50 SDLLightmap::~SDLLightmap()
52 SDL_DestroyTexture(texture);
56 SDLLightmap::start_draw(const Color &ambient_color)
58 SDL_SetRenderTarget(renderer, texture);
60 Uint8 r = static_cast<Uint8>(ambient_color.red * 255);
61 Uint8 g = static_cast<Uint8>(ambient_color.green * 255);
62 Uint8 b = static_cast<Uint8>(ambient_color.blue * 255);
64 SDL_SetRenderDrawColor(renderer, r, g, b, 255);
65 SDL_RenderClear(renderer);
69 SDLLightmap::end_draw()
71 SDL_SetRenderTarget(renderer, NULL);
75 SDLLightmap::do_draw()
77 SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_MOD);
85 SDL_RenderCopy(renderer, texture, NULL, &dst_rect);
89 SDLLightmap::draw_surface(const DrawingRequest& request)
91 SDLPainter::draw_surface(renderer, request);
95 SDLLightmap::draw_surface_part(const DrawingRequest& request)
97 SDLPainter::draw_surface_part(renderer, request);
101 SDLLightmap::draw_gradient(const DrawingRequest& request)
103 SDLPainter::draw_gradient(renderer, request);
107 SDLLightmap::draw_filled_rect(const DrawingRequest& request)
109 SDLPainter::draw_filled_rect(renderer, request);
113 SDLLightmap::get_light(const DrawingRequest& request) const
115 const GetLightRequest* getlightrequest
116 = (GetLightRequest*) request.request_data;
119 rect.x = static_cast<int>(request.pos.x * width / SCREEN_WIDTH);
120 rect.y = static_cast<int>(request.pos.y * height / SCREEN_HEIGHT);
124 SDL_SetRenderTarget(renderer, texture);
126 int ret = SDL_RenderReadPixels(renderer, &rect,
127 SDL_PIXELFORMAT_RGB888,
132 log_warning << "failed to read pixels: " << SDL_GetError() << std::endl;
134 SDL_SetRenderTarget(renderer, 0);
136 *(getlightrequest->color_ptr) = Color(pixel[2] / 255.0f,