mirror of
https://github.com/libretro/RetroArch.git
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121 lines
3.2 KiB
C
121 lines
3.2 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2017 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <retro_inline.h>
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#include <retro_miscellaneous.h>
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#include "video_coord_array.h"
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static INLINE bool realloc_checked(void **ptr, size_t size)
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{
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void *nptr = NULL;
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if (*ptr)
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nptr = realloc(*ptr, size);
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else
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nptr = malloc(size);
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if (nptr)
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*ptr = nptr;
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return *ptr == nptr;
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}
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static bool video_coord_array_resize(video_coord_array_t *ca,
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unsigned cap)
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{
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size_t base_size = sizeof(float) * cap;
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if (!realloc_checked((void**)&ca->coords.vertex,
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2 * base_size))
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return false;
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if (!realloc_checked((void**)&ca->coords.color,
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4 * base_size))
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return false;
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if (!realloc_checked((void**)&ca->coords.tex_coord,
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2 * base_size))
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return false;
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if (!realloc_checked((void**)&ca->coords.lut_tex_coord,
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2 * base_size))
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return false;
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ca->allocated = cap;
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return true;
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}
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bool video_coord_array_append(video_coord_array_t *ca,
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const video_coords_t *coords, unsigned count)
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{
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size_t base_size, offset;
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count = MIN(count, coords->vertices);
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if (ca->coords.vertices + count >= ca->allocated)
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{
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unsigned cap = next_pow2(ca->coords.vertices + count);
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if (!video_coord_array_resize(ca, cap))
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return false;
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}
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base_size = count * sizeof(float);
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offset = ca->coords.vertices;
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/* XXX: I wish we used interlaced arrays so
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* we could call memcpy only once. */
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memcpy(ca->coords.vertex + offset * 2,
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coords->vertex, base_size * 2);
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memcpy(ca->coords.color + offset * 4,
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coords->color, base_size * 4);
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memcpy(ca->coords.tex_coord + offset * 2,
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coords->tex_coord, base_size * 2);
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memcpy(ca->coords.lut_tex_coord + offset * 2,
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coords->lut_tex_coord, base_size * 2);
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ca->coords.vertices += count;
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return true;
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}
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void video_coord_array_free(video_coord_array_t *ca)
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{
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if (!ca->allocated)
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return;
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if (ca->coords.vertex)
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free(ca->coords.vertex);
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ca->coords.vertex = NULL;
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if (ca->coords.color)
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free(ca->coords.color);
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ca->coords.color = NULL;
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if (ca->coords.tex_coord)
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free(ca->coords.tex_coord);
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ca->coords.tex_coord = NULL;
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if (ca->coords.lut_tex_coord)
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free(ca->coords.lut_tex_coord);
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ca->coords.lut_tex_coord = NULL;
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ca->coords.vertices = 0;
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ca->allocated = 0;
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}
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