starfighter/src/renderer.c

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/*
Copyright (C) 2003 Parallel Realities
Copyright (C) 2011, 2012, 2013 Guus Sliepen
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Copyright (C) 2015-2019 Julie Marchant <onpon4@riseup.net>
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This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "SDL.h"
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#include "defs.h"
#include "structs.h"
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#include "screen.h"
SDL_Renderer *renderer;
SDL_Texture *renderer_texture;
void renderer_update()
{
// XXX: The SDL wiki says that SDL_UpdateTexture is slow and shouldn't
// be used for textures that are updated often. This should be looked
// into.
SDL_UpdateTexture(renderer_texture, NULL, screen->pixels, screen->w * 4);
SDL_RenderCopy(renderer, renderer_texture, NULL, NULL);
SDL_RenderPresent(renderer);
}