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 m_renderer(static_cast<SDLRenderer&>(VideoSystem::current()->get_renderer()).get_sdl_renderer()),
34 m_width = SCREEN_WIDTH;
35 m_height = SCREEN_HEIGHT;
37 m_texture = SDL_CreateTexture(m_renderer,
38 SDL_PIXELFORMAT_RGB888,
39 SDL_TEXTUREACCESS_TARGET,
40 m_width / m_LIGHTMAP_DIV,
41 m_height / m_LIGHTMAP_DIV);
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(m_texture);
56 SDLLightmap::start_draw(const Color &ambient_color)
58 SDL_SetRenderTarget(m_renderer, m_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(m_renderer, r, g, b, 255);
65 SDL_RenderClear(m_renderer);
66 SDL_RenderSetScale(m_renderer, 1.0f / m_LIGHTMAP_DIV, 1.0f / m_LIGHTMAP_DIV);
70 SDLLightmap::end_draw()
72 SDL_RenderSetScale(m_renderer, 1.0f, 1.0f);
73 SDL_SetRenderTarget(m_renderer, NULL);
77 SDLLightmap::do_draw()
79 SDL_SetTextureBlendMode(m_texture, SDL_BLENDMODE_MOD);
85 dst_rect.h = m_height;
87 SDL_RenderCopy(m_renderer, m_texture, NULL, &dst_rect);
91 SDLLightmap::draw_surface(const DrawingRequest& request)
93 SDLPainter::draw_surface(m_renderer, request);
97 SDLLightmap::draw_surface_part(const DrawingRequest& request)
99 SDLPainter::draw_surface_part(m_renderer, request);
103 SDLLightmap::draw_gradient(const DrawingRequest& request)
105 SDLPainter::draw_gradient(m_renderer, request);
109 SDLLightmap::draw_filled_rect(const DrawingRequest& request)
111 SDLPainter::draw_filled_rect(m_renderer, request);
115 SDLLightmap::draw_inverse_ellipse(const DrawingRequest& request)
117 SDLPainter::draw_inverse_ellipse(m_renderer, request);
121 SDLLightmap::get_light(const DrawingRequest& request) const
123 const GetLightRequest* getlightrequest
124 = static_cast<GetLightRequest*>(request.request_data);
127 rect.x = static_cast<int>(request.pos.x / m_LIGHTMAP_DIV);
128 rect.y = static_cast<int>((m_height - request.pos.y) / m_LIGHTMAP_DIV);
132 SDL_SetRenderTarget(m_renderer, m_texture);
134 int ret = SDL_RenderReadPixels(m_renderer, &rect,
135 SDL_PIXELFORMAT_RGB888,
140 log_warning << "failed to read pixels: " << SDL_GetError() << std::endl;
142 SDL_SetRenderTarget(m_renderer, 0);
144 *(getlightrequest->color_ptr) = Color(pixel[2] / 255.0f,