Mercurial > hg > ascension / file revision

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * Copyright 2024 Mike Becker. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ASCENSION_TEXTURE_H
#define ASCENSION_TEXTURE_H

#include <SDL2/SDL_surface.h>

typedef struct AscTexture AscTexture;

struct AscTexture {
    unsigned target;
    unsigned tex_id;
};

#define asc_texture_uninitialized(tex) ((tex)->tex_id == 0)

enum asc_texture_target {
    ASC_TEXTURE_RECTANGLE
};

enum asc_texture_min_filter {
    ASC_TEXTURE_MIN_FILTER_NEAREST,
    ASC_TEXTURE_MIN_FILTER_LINEAR,
    ASC_TEXTURE_MIN_FILTER_NEAREST_MIPMAP_NEAREST,
    ASC_TEXTURE_MIN_FILTER_LINEAR_MIPMAP_NEAREST,
    ASC_TEXTURE_MIN_FILTER_NEAREST_MIPMAP_LINEAR,
    ASC_TEXTURE_MIN_FILTER_LINEAR_MIPMAP_LINEAR
};

enum asc_texture_mag_filter {
    ASC_TEXTURE_MAG_FILTER_NEAREST,
    ASC_TEXTURE_MAG_FILTER_LINEAR
};

__attribute__((__nonnull__))
void asc_texture_init(
        AscTexture *tex,
        enum asc_texture_target target,
        enum asc_texture_min_filter min_filter,
        enum asc_texture_mag_filter mag_filter
);

__attribute__((__nonnull__))
void asc_texture_destroy(AscTexture *tex);

#define asc_texture_init_rectangle(tex) \
    asc_texture_init(tex, ASC_TEXTURE_RECTANGLE, \
        ASC_TEXTURE_MIN_FILTER_LINEAR, ASC_TEXTURE_MAG_FILTER_LINEAR)

__attribute__((__nonnull__))
void asc_texture_bind(AscTexture const *tex, int uniform_location, int unit);

__attribute__((__nonnull__))
void asc_texture_from_surface(AscTexture *tex, SDL_Surface const *surface);

#endif //ASCENSION_TEXTURE_H