Mercurial > molko
changeset 3:c013f41a72a5
core: implement basic textures, closes #2442
author | David Demelier <markand@malikania.fr> |
---|---|
date | Mon, 06 Jan 2020 20:20:58 +0100 |
parents | 832c20d6cce9 |
children | cd58eabb7fb4 |
files | src/texture.c src/texture.h src/texture_p.h |
diffstat | 3 files changed, 198 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/texture.c Mon Jan 06 20:20:58 2020 +0100 @@ -0,0 +1,94 @@ +/* + * texture.c -- basic texture management + * + * Copyright (c) 2020 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <assert.h> + +#include "texture.h" +#include "texture_p.h" +#include "window_p.h" + +void +texture_draw(struct texture *tex, int x, int y) +{ + SDL_Rect dst = { + .x = x, + .y = y, + .w = 0, + .h = 0 + }; + + assert(tex); + + /* We need to determine size */ + SDL_QueryTexture(tex->handle, NULL, NULL, &dst.w, &dst.h); + SDL_RenderCopy(win.renderer, tex->handle, NULL, &dst); +} + +void +texture_draw_ex(struct texture *tex, + int src_x, + int src_y, + unsigned src_w, + unsigned src_h, + int dst_x, + int dst_y, + unsigned dst_w, + unsigned dst_h, + double angle) +{ + const SDL_Rect src = { + .x = src_x, + .y = src_y, + .w = src_w, + .h = src_h + }; + const SDL_Rect dst = { + .x = dst_x, + .y = dst_y, + .w = dst_w, + .h = dst_h + }; + + SDL_RenderCopyEx(win.renderer, tex->handle, &src, &dst, angle, NULL, SDL_FLIP_NONE); +} + +void +texture_close(struct texture *tex) +{ + assert(tex); + + SDL_DestroyTexture(tex->handle); + free(tex); +} + +/* private */ + +struct texture * +texture_from_surface(SDL_Surface *surface) +{ + struct texture *texture; + + if (!(texture = calloc(1, sizeof (struct texture)))) + return NULL; + if (!(texture->handle = SDL_CreateTextureFromSurface(win.renderer, surface))) { + free(texture); + return NULL; + } + + return texture; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/texture.h Mon Jan 06 20:20:58 2020 +0100 @@ -0,0 +1,73 @@ +/* + * texture.h -- basic texture management + * + * Copyright (c) 2020 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +struct texture; + +/** + * \file texture.h + * \brief Basic texture management. + * + * See also \a image.h for usage of textures. + */ + +/** + * Simple texture drawing. + * + * \pre tex != NULL + * \param tex the texture + * \param x the X coordinate + * \param y the Y coordinate + */ +void +texture_draw(struct texture *tex, int x, int y); + +/** + * Advanced texture drawing. + * + * \pre tex != NULL + * \param tex the texture + * \param src_x the source rectangle X coordinate + * \param src_y the source rectangle Y coordinate + * \param src_width the source rectangle width + * \param src_height the source rectangle height + * \param dst_x the destination rectangle X coordinate + * \param dst_y the destination rectangle Y coordinate + * \param dst_width the destination rectangle width + * \param dst_height the destination rectangle height + * \param angle the angle + */ +void +texture_draw_ex(struct texture *tex, + int src_x, + int src_y, + unsigned src_w, + unsigned src_h, + int dst_x, + int dst_y, + unsigned dst_w, + unsigned dst_h, + double angle); + +/** + * Close the texture, do not use afterwards. + * + * \pre tex != NULL + * \param tex the texture + */ +void +texture_close(struct texture *tex);
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/texture_p.h Mon Jan 06 20:20:58 2020 +0100 @@ -0,0 +1,31 @@ +/* + * texture_p.h -- (PRIVATE) basic texture management + * + * Copyright (c) 2020 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef MOLKO_TEXTURE_P_H +#define MOLKO_TEXTURE_P_H + +#include <SDL.h> + +struct texture { + SDL_Texture *handle; +}; + +struct texture * +texture_from_surface(SDL_Surface *surface); + +#endif /* !MOLKO_TEXTURE_P_H */