mirror of
https://github.com/libretro/RetroArch
synced 2025-02-01 09:32:58 +00:00
104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2017 - Hans-Kristian Arntzen
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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 "slang_preprocess.h"
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#include "glslang_util.h"
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#include <vector>
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#include <string>
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#include <algorithm>
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#include <compat/strl.h>
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#include "../../verbosity.h"
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using namespace std;
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bool slang_preprocess_parse_parameters(glslang_meta& meta,
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struct video_shader *shader)
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{
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unsigned i;
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unsigned old_num_parameters = shader->num_parameters;
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/* Assumes num_parameters is
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* initialized to something sane. */
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for (i = 0; i < meta.parameters.size(); i++)
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{
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bool mismatch_dup = false;
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bool dup = false;
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auto itr = find_if(shader->parameters,
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shader->parameters + shader->num_parameters,
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[&](const video_shader_parameter &parsed_param)
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{
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return meta.parameters[i].id == parsed_param.id;
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});
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if (itr != shader->parameters + shader->num_parameters)
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{
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dup = true;
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/* Allow duplicate #pragma parameter, but only
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* if they are exactly the same. */
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if ( meta.parameters[i].desc != itr->desc ||
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meta.parameters[i].initial != itr->initial ||
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meta.parameters[i].minimum != itr->minimum ||
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meta.parameters[i].maximum != itr->maximum ||
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meta.parameters[i].step != itr->step)
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{
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RARCH_ERR("[slang]: Duplicate parameters"
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" found for \"%s\", but arguments do not match.\n",
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itr->id);
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mismatch_dup = true;
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}
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}
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if (dup && !mismatch_dup)
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continue;
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if (mismatch_dup || shader->num_parameters == GFX_MAX_PARAMETERS)
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{
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shader->num_parameters = old_num_parameters;
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return false;
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}
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struct video_shader_parameter *p = (struct video_shader_parameter*)
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&shader->parameters[shader->num_parameters++];
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if (!p)
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continue;
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strlcpy(p->id, meta.parameters[i].id.c_str(), sizeof(p->id));
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strlcpy(p->desc, meta.parameters[i].desc.c_str(), sizeof(p->desc));
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p->initial = meta.parameters[i].initial;
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p->minimum = meta.parameters[i].minimum;
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p->maximum = meta.parameters[i].maximum;
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p->step = meta.parameters[i].step;
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p->current = meta.parameters[i].initial;
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}
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return true;
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}
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bool slang_preprocess_parse_parameters(const char *shader_path,
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struct video_shader *shader)
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{
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glslang_meta meta;
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vector<string> lines;
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if (!glslang_read_shader_file(shader_path, &lines, true))
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return false;
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if (!glslang_parse_meta(lines, &meta))
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return false;
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return slang_preprocess_parse_parameters(meta, shader);
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}
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