mirror of
https://github.com/libretro/RetroArch.git
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97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2015 - 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 <string.h>
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#include <retro_log.h>
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#include "video_shader_driver.h"
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static const shader_backend_t *shader_ctx_drivers[] = {
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#ifdef HAVE_GLSL
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&gl_glsl_backend,
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#endif
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#ifdef HAVE_CG
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&gl_cg_backend,
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#endif
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#ifdef HAVE_HLSL
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&hlsl_backend,
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#endif
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&shader_null_backend,
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NULL
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};
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/**
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* shader_ctx_find_driver:
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* @ident : Identifier of shader context driver to find.
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*
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* Finds shader context driver and initializes.
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*
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* Returns: shader context driver if found, otherwise NULL.
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**/
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const shader_backend_t *shader_ctx_find_driver(const char *ident)
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{
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unsigned i;
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for (i = 0; shader_ctx_drivers[i]; i++)
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{
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if (!strcmp(shader_ctx_drivers[i]->ident, ident))
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return shader_ctx_drivers[i];
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}
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return NULL;
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}
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/**
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* shader_ctx_init_first:
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*
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* Finds first suitable shader context driver and initializes.
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*
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* Returns: shader context driver if found, otherwise NULL.
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**/
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const shader_backend_t *shader_ctx_init_first(void)
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{
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unsigned i;
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for (i = 0; shader_ctx_drivers[i]; i++)
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return shader_ctx_drivers[i];
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return NULL;
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}
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struct video_shader *video_shader_driver_get_current_shader(void)
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{
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driver_t *driver = driver_get_ptr();
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if (!driver->video_poke)
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return NULL;
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if (!driver->video_data)
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return NULL;
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if (!driver->video_poke->get_current_shader)
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return NULL;
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return driver->video_poke->get_current_shader(driver->video_data);
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}
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void video_shader_scale(unsigned idx,
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const shader_backend_t *shader, struct gfx_fbo_scale *scale)
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{
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if (!scale || !shader)
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return;
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scale->valid = false;
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if (shader->shader_scale)
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shader->shader_scale(idx, scale);
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}
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