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RetroArch/gfx/video_shader_parse.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
#include <libretro.h>
#include <compat/posix_string.h>
#include <compat/msvc.h>
#include <compat/strl.h>
#include <file/file_path.h>
#include <rhash.h>
#include <string/stdstring.h>
#include <streams/file_stream.h>
#include <lists/string_list.h>
#include "../configuration.h"
#include "../retroarch.h"
#include "../verbosity.h"
#include "../frontend/frontend_driver.h"
#include "../command.h"
#include "../file_path_special.h"
#include "video_shader_parse.h"
#if defined(HAVE_SLANG) && defined(HAVE_SPIRV_CROSS)
#include "drivers_shader/slang_process.h"
#endif
static path_change_data_t *file_change_data = NULL;
/**
* wrap_mode_to_str:
* @type : Wrap type.
*
* Translates wrap mode to human-readable string identifier.
*
* Returns: human-readable string identifier of wrap mode.
**/
static const char *wrap_mode_to_str(enum gfx_wrap_type type)
{
switch (type)
{
case RARCH_WRAP_BORDER:
return "clamp_to_border";
case RARCH_WRAP_EDGE:
return "clamp_to_edge";
case RARCH_WRAP_REPEAT:
return "repeat";
case RARCH_WRAP_MIRRORED_REPEAT:
return "mirrored_repeat";
default:
break;
}
return "???";
}
/**
* wrap_str_to_mode:
* @type : Wrap type in human-readable string format.
*
* Translates wrap mode from human-readable string to enum mode value.
*
* Returns: enum mode value of wrap type.
**/
static enum gfx_wrap_type wrap_str_to_mode(const char *wrap_mode)
{
if (string_is_equal(wrap_mode, "clamp_to_border"))
return RARCH_WRAP_BORDER;
else if (string_is_equal(wrap_mode, "clamp_to_edge"))
return RARCH_WRAP_EDGE;
else if (string_is_equal(wrap_mode, "repeat"))
return RARCH_WRAP_REPEAT;
else if (string_is_equal(wrap_mode, "mirrored_repeat"))
return RARCH_WRAP_MIRRORED_REPEAT;
RARCH_WARN("Invalid wrapping type %s. Valid ones are: clamp_to_border"
" (default), clamp_to_edge, repeat and mirrored_repeat. Falling back to default.\n",
wrap_mode);
return RARCH_WRAP_DEFAULT;
}
/**
* video_shader_parse_pass:
* @conf : Preset file to read from.
* @pass : Shader passes handle.
* @i : Index of shader pass.
*
* Parses shader pass from preset file.
*
* Returns: true (1) if successful, otherwise false (0).
**/
static bool video_shader_parse_pass(config_file_t *conf,
struct video_shader_pass *pass, unsigned i)
{
char shader_name[64];
char filter_name_buf[64];
char wrap_name_buf[64];
char wrap_mode[64];
char frame_count_mod_buf[64];
char srgb_output_buf[64];
char fp_fbo_buf[64];
char mipmap_buf[64];
char alias_buf[64];
char scale_name_buf[64];
char attr_name_buf[64];
char scale_type[64];
char scale_type_x[64];
char scale_type_y[64];
char frame_count_mod[64];
size_t path_size = PATH_MAX_LENGTH;
char *tmp_path = (char*)malloc(path_size);
struct gfx_fbo_scale *scale = NULL;
bool tmp_bool = false;
float fattr = 0.0f;
int iattr = 0;
if (!tmp_path)
return false;
fp_fbo_buf[0] = mipmap_buf[0] = alias_buf[0] =
scale_name_buf[0] = attr_name_buf[0] = scale_type[0] =
scale_type_x[0] = scale_type_y[0] = frame_count_mod[0] =
shader_name[0] = filter_name_buf[0] = wrap_name_buf[0] =
wrap_mode[0] = frame_count_mod_buf[0] = srgb_output_buf[0] = '\0';
/* Source */
snprintf(shader_name, sizeof(shader_name), "shader%u", i);
if (!config_get_path(conf, shader_name, tmp_path, path_size))
{
RARCH_ERR("Couldn't parse shader source (%s).\n", shader_name);
free(tmp_path);
return false;
}
fill_pathname_resolve_relative(pass->source.path,
conf->path, tmp_path, sizeof(pass->source.path));
free(tmp_path);
/* Smooth */
snprintf(filter_name_buf, sizeof(filter_name_buf), "filter_linear%u", i);
if (config_get_bool(conf, filter_name_buf, &tmp_bool))
{
bool smooth = tmp_bool;
pass->filter = smooth ? RARCH_FILTER_LINEAR : RARCH_FILTER_NEAREST;
}
else
pass->filter = RARCH_FILTER_UNSPEC;
/* Wrapping mode */
snprintf(wrap_name_buf, sizeof(wrap_name_buf), "wrap_mode%u", i);
if (config_get_array(conf, wrap_name_buf, wrap_mode, sizeof(wrap_mode)))
pass->wrap = wrap_str_to_mode(wrap_mode);
/* Frame count mod */
snprintf(frame_count_mod_buf, sizeof(frame_count_mod_buf), "frame_count_mod%u", i);
if (config_get_array(conf, frame_count_mod_buf,
frame_count_mod, sizeof(frame_count_mod)))
pass->frame_count_mod = (unsigned)strtoul(frame_count_mod, NULL, 0);
/* FBO types and mipmapping */
snprintf(srgb_output_buf, sizeof(srgb_output_buf), "srgb_framebuffer%u", i);
if (config_get_bool(conf, srgb_output_buf, &tmp_bool))
pass->fbo.srgb_fbo = tmp_bool;
snprintf(fp_fbo_buf, sizeof(fp_fbo_buf), "float_framebuffer%u", i);
if (config_get_bool(conf, fp_fbo_buf, &tmp_bool))
pass->fbo.fp_fbo = tmp_bool;
snprintf(mipmap_buf, sizeof(mipmap_buf), "mipmap_input%u", i);
if (config_get_bool(conf, mipmap_buf, &tmp_bool))
pass->mipmap = tmp_bool;
snprintf(alias_buf, sizeof(alias_buf), "alias%u", i);
if (!config_get_array(conf, alias_buf, pass->alias, sizeof(pass->alias)))
*pass->alias = '\0';
/* Scale */
scale = &pass->fbo;
snprintf(scale_name_buf, sizeof(scale_name_buf), "scale_type%u", i);
config_get_array(conf, scale_name_buf, scale_type, sizeof(scale_type));
snprintf(scale_name_buf, sizeof(scale_name_buf), "scale_type_x%u", i);
config_get_array(conf, scale_name_buf, scale_type_x, sizeof(scale_type_x));
snprintf(scale_name_buf, sizeof(scale_name_buf), "scale_type_y%u", i);
config_get_array(conf, scale_name_buf, scale_type_y, sizeof(scale_type_y));
if (!*scale_type && !*scale_type_x && !*scale_type_y)
return true;
if (*scale_type)
{
strlcpy(scale_type_x, scale_type, sizeof(scale_type_x));
strlcpy(scale_type_y, scale_type, sizeof(scale_type_y));
}
scale->valid = true;
scale->type_x = RARCH_SCALE_INPUT;
scale->type_y = RARCH_SCALE_INPUT;
scale->scale_x = 1.0;
scale->scale_y = 1.0;
if (*scale_type_x)
{
if (string_is_equal(scale_type_x, "source"))
scale->type_x = RARCH_SCALE_INPUT;
else if (string_is_equal(scale_type_x, "viewport"))
scale->type_x = RARCH_SCALE_VIEWPORT;
else if (string_is_equal(scale_type_x, "absolute"))
scale->type_x = RARCH_SCALE_ABSOLUTE;
else
{
RARCH_ERR("Invalid attribute.\n");
return false;
}
}
if (*scale_type_y)
{
if (string_is_equal(scale_type_y, "source"))
scale->type_y = RARCH_SCALE_INPUT;
else if (string_is_equal(scale_type_y, "viewport"))
scale->type_y = RARCH_SCALE_VIEWPORT;
else if (string_is_equal(scale_type_y, "absolute"))
scale->type_y = RARCH_SCALE_ABSOLUTE;
else
{
RARCH_ERR("Invalid attribute.\n");
return false;
}
}
snprintf(attr_name_buf, sizeof(attr_name_buf), "scale%u", i);
if (scale->type_x == RARCH_SCALE_ABSOLUTE)
{
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_x = iattr;
else
{
snprintf(attr_name_buf, sizeof(attr_name_buf), "scale_x%u", i);
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_x = iattr;
}
}
else
{
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_x = fattr;
else
{
snprintf(attr_name_buf, sizeof(attr_name_buf), "scale_x%u", i);
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_x = fattr;
}
}
snprintf(attr_name_buf, sizeof(attr_name_buf), "scale%u", i);
if (scale->type_y == RARCH_SCALE_ABSOLUTE)
{
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_y = iattr;
else
{
snprintf(attr_name_buf, sizeof(attr_name_buf), "scale_y%u", i);
if (config_get_int(conf, attr_name_buf, &iattr))
scale->abs_y = iattr;
}
}
else
{
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_y = fattr;
else
{
snprintf(attr_name_buf, sizeof(attr_name_buf), "scale_y%u", i);
if (config_get_float(conf, attr_name_buf, &fattr))
scale->scale_y = fattr;
}
}
return true;
}
/**
* video_shader_parse_textures:
* @conf : Preset file to read from.
* @shader : Shader pass handle.
*
* Parses shader textures.
*
* Returns: true (1) if successful, otherwise false (0).
**/
static bool video_shader_parse_textures(config_file_t *conf,
struct video_shader *shader)
{
size_t path_size = PATH_MAX_LENGTH;
const char *id = NULL;
char *save = NULL;
char *textures = (char*)malloc(1024 + path_size);
char *tmp_path = textures + 1024;
if (!textures)
return false;
textures[0] = '\0';
if (!config_get_array(conf, "textures", textures, 1024))
{
free(textures);
return true;
}
for (id = strtok_r(textures, ";", &save);
id && shader->luts < GFX_MAX_TEXTURES;
shader->luts++, id = strtok_r(NULL, ";", &save))
{
char id_filter[64];
char id_wrap[64];
char wrap_mode[64];
char id_mipmap[64];
bool mipmap = false;
bool smooth = false;
id_filter[0] = id_wrap[0] = wrap_mode[0] = id_mipmap[0] = '\0';
if (!config_get_array(conf, id, tmp_path, path_size))
{
RARCH_ERR("Cannot find path to texture \"%s\" ...\n", id);
free(textures);
return false;
}
fill_pathname_resolve_relative(shader->lut[shader->luts].path,
conf->path, tmp_path, sizeof(shader->lut[shader->luts].path));
strlcpy(shader->lut[shader->luts].id, id,
sizeof(shader->lut[shader->luts].id));
strlcpy(id_filter, id, sizeof(id_filter));
strlcat(id_filter, "_linear", sizeof(id_filter));
if (config_get_bool(conf, id_filter, &smooth))
shader->lut[shader->luts].filter = smooth ?
RARCH_FILTER_LINEAR : RARCH_FILTER_NEAREST;
else
shader->lut[shader->luts].filter = RARCH_FILTER_UNSPEC;
strlcpy(id_wrap, id, sizeof(id_wrap));
strlcat(id_wrap, "_wrap_mode", sizeof(id_wrap));
if (config_get_array(conf, id_wrap, wrap_mode, sizeof(wrap_mode)))
shader->lut[shader->luts].wrap = wrap_str_to_mode(wrap_mode);
strlcpy(id_mipmap, id, sizeof(id_mipmap));
strlcat(id_mipmap, "_mipmap", sizeof(id_mipmap));
if (config_get_bool(conf, id_mipmap, &mipmap))
shader->lut[shader->luts].mipmap = mipmap;
else
shader->lut[shader->luts].mipmap = false;
}
free(textures);
return true;
}
/**
* video_shader_parse_find_parameter:
* @params : Shader parameter handle.
* @num_params : Number of shader params in @params.
* @id : Identifier to search for.
*
* Finds a shader parameter with identifier @id in @params..
*
* Returns: handle to shader parameter if successful, otherwise NULL.
**/
static struct video_shader_parameter *video_shader_parse_find_parameter(
struct video_shader_parameter *params,
unsigned num_params, const char *id)
{
unsigned i;
for (i = 0; i < num_params; i++)
{
if (string_is_equal(params[i].id, id))
return &params[i];
}
return NULL;
}
/**
* video_shader_set_current_parameters:
* @conf : Preset file to read from.
* @shader : Shader passes handle.
*
* Reads the current value for all parameters from config file.
*
* Returns: true (1) if successful, otherwise false (0).
**/
bool video_shader_resolve_current_parameters(config_file_t *conf,
struct video_shader *shader)
{
size_t param_size = 4096 * sizeof(char);
const char *id = NULL;
char *parameters = NULL;
char *save = NULL;
if (!conf)
return false;
parameters = (char*)malloc(param_size);
if (!parameters)
return false;
parameters[0] = '\0';
/* Read in parameters which override the defaults. */
if (!config_get_array(conf, "parameters",
parameters, param_size))
{
free(parameters);
return true;
}
for (id = strtok_r(parameters, ";", &save); id;
id = strtok_r(NULL, ";", &save))
{
struct video_shader_parameter *parameter =
(struct video_shader_parameter*)
video_shader_parse_find_parameter(
shader->parameters, shader->num_parameters, id);
if (!parameter)
{
RARCH_WARN("[CGP/GLSLP]: Parameter %s is set in the preset,"
" but no shader uses this parameter, ignoring.\n", id);
continue;
}
if (!config_get_float(conf, id, &parameter->current))
RARCH_WARN("[CGP/GLSLP]: Parameter %s is not set in preset.\n", id);
}
free(parameters);
return true;
}
/**
* video_shader_resolve_parameters:
* @conf : Preset file to read from.
* @shader : Shader passes handle.
*
* Resolves all shader parameters belonging to shaders.
*
* Returns: true (1) if successful, otherwise false (0).
**/
bool video_shader_resolve_parameters(config_file_t *conf,
struct video_shader *shader)
{
unsigned i;
struct video_shader_parameter *param = &shader->parameters[0];
shader->num_parameters = 0;
/* Find all parameters in our shaders. */
for (i = 0; i < shader->passes; i++)
{
const char *path = shader->pass[i].source.path;
uint8_t *buf = NULL;
int64_t buf_len = 0;
struct string_list *lines = NULL;
size_t line_index = 0;
if (string_is_empty(path))
continue;
if (!path_is_valid(path))
continue;
#if defined(HAVE_SLANG) && defined(HAVE_SPIRV_CROSS)
/* First try to use the more robust slang
* implementation to support #includes. */
/* FIXME: The check for slang can be removed
* if it's sufficiently tested for
* GLSL/Cg as well, it should be the same implementation. */
if (string_is_equal(path_get_extension(path), "slang") &&
slang_preprocess_parse_parameters(path, shader))
continue;
/* If that doesn't work, fallback to the old path.
* Ideally, we'd get rid of this path sooner or later. */
#endif
/* Read file contents */
if (!filestream_read_file(path, (void**)&buf, &buf_len))
continue;
/* Split into lines */
if (buf_len > 0)
lines = string_split((const char*)buf, "\n");
/* Buffer is no longer required - clean up */
if ((void*)buf)
free((void*)buf);
if (!lines)
continue;
/* even though the pass is set in the loop too, not all passes have parameters */
param->pass = i;
while ((shader->num_parameters < ARRAY_SIZE(shader->parameters)) &&
(line_index < lines->size))
{
int ret;
const char *line = lines->elems[line_index].data;
line_index++;
/* Check if this is a '#pragma parameter' line */
if (strncmp("#pragma parameter", line,
STRLEN_CONST("#pragma parameter")))
continue;
/* Parse line */
ret = sscanf(line, "#pragma parameter %63s \"%63[^\"]\" %f %f %f %f",
param->id, param->desc, &param->initial,
&param->minimum, &param->maximum, &param->step);
if (ret < 5)
continue;
param->id[63] = '\0';
param->desc[63] = '\0';
if (ret == 5)
param->step = 0.1f * (param->maximum - param->minimum);
param->pass = i;
RARCH_LOG("Found #pragma parameter %s (%s) %f %f %f %f in pass %d\n",
param->desc, param->id, param->initial,
param->minimum, param->maximum, param->step, param->pass);
param->current = param->initial;
shader->num_parameters++;
param++;
}
string_list_free(lines);
}
return video_shader_resolve_current_parameters(conf, shader);
}
/**
* video_shader_write_preset:
* @path : File to write to
* @shader : Shader preset to write
* @reference : Whether a reference preset should be written
*
* Writes a preset to disk. Can be written as a reference preset.
* See: video_shader_read_preset
**/
bool video_shader_write_preset(const char *path,
const struct video_shader *shader, bool reference)
{
/* We need to clean up paths to be able to properly process them
* path and shader->path can use '/' on Windows due to Qt being Qt */
char clean_path[PATH_MAX_LENGTH];
char clean_shader_path[PATH_MAX_LENGTH];
char preset_dir[PATH_MAX_LENGTH];
if (!shader || string_is_empty(path))
return false;
fill_pathname_join(
preset_dir,
config_get_ptr()->paths.directory_video_shader,
"presets",
sizeof(preset_dir));
strlcpy(clean_shader_path, shader->path, PATH_MAX_LENGTH);
path_resolve_realpath(clean_shader_path, PATH_MAX_LENGTH, false);
if (string_is_empty(shader->path))
reference = false;
/* Auto-shaders can be written as copies or references.
* If we write a reference to a copy, we could then overwrite the copy
* with any reference, thus creating a reference to a reference.
* To prevent this, we disallow saving references to auto-shaders. */
if (reference && !strncmp(preset_dir, clean_shader_path, strlen(preset_dir)))
reference = false;
/* Don't ever create a reference to the ever-changing retroarch preset
* TODO remove once we don't write this preset anymore */
if (reference && !strncmp(path_basename(clean_shader_path), "retroarch", STRLEN_CONST("retroarch")))
reference = false;
if (reference)
{
/* write a reference preset */
char buf[STRLEN_CONST("#reference \"") + PATH_MAX_LENGTH + 1] = "#reference \"";
size_t len = STRLEN_CONST("#reference \"");
char *preset_ref = buf + len;
strlcpy(clean_path, path, PATH_MAX_LENGTH);
path_resolve_realpath(clean_path, PATH_MAX_LENGTH, false);
path_relative_to(preset_ref, clean_shader_path, clean_path, PATH_MAX_LENGTH);
len += strlen(preset_ref);
buf[len++] = '\"';
return filestream_write_file(clean_path, (void *)buf, len);
}
else
{
/* regular saving function */
config_file_t *conf;
bool ret;
if (!(conf = config_file_new_alloc()))
return false;
video_shader_write_conf_preset(conf, shader, path);
ret = config_file_write(conf, path, false);
config_file_free(conf);
return ret;
}
}
/**
* video_shader_read_reference_path:
* @path : File to read
*
* Returns: the reference path of a preset if it exists,
* otherwise returns NULL.
*
* The returned string needs to be freed.
*/
char *video_shader_read_reference_path(const char *path)
{
/* We want shader presets that point to other presets.
*
* While config_file_new_from_path_to_string() does support the
* #include directive, it will not rebase relative paths on
* the include path.
*
* There's a plethora of reasons why a general solution is hard:
* - it's impossible to distinguish a generic string from a (relative) path
* - config_file_new_from_path_to_string() doesn't return the include path,
* so we cannot rebase afterwards
* - #include is recursive, so we'd actually need to track the include path
* for every setting
*
* So instead, we use a custom #reference directive, which is just a
* one-time/non-recursive redirection, e.g.
*
* #reference "<path to config>"
* or
* #reference <path to config>
*
* which we will load as config_file_new_from_path_to_string(<path to config>).
*/
char *reference = NULL;
RFILE *file = NULL;
char *line = NULL;
if (string_is_empty(path))
goto end;
if (!path_is_valid(path))
goto end;
file = filestream_open(path, RETRO_VFS_FILE_ACCESS_READ, RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!file)
goto end;
line = filestream_getline(file);
filestream_close(file);
if (line && !strncmp("#reference", line, STRLEN_CONST("#reference")))
{
char *ref_path = line + STRLEN_CONST("#reference");
/* have at least 1 whitespace */
if (!isspace(*ref_path))
goto end;
ref_path++;
while (isspace(*ref_path))
ref_path++;
if (*ref_path == '\"')
{
/* remove "" */
char *p;
ref_path++;
p = ref_path;
while (*p != '\0' && *p != '\"')
p++;
if (*p == '\"')
{
*p = '\0';
}
else
{
/* if there's no second ", remove whitespace at the end */
p--;
while (isspace(*p))
*p-- = '\0';
}
}
else
{
/* remove whitespace at the end (e.g. carriage return) */
char *end = ref_path + strlen(ref_path) - 1;
while (isspace(*end))
*end-- = '\0';
}
if (string_is_empty(ref_path))
goto end;
reference = (char *)malloc(PATH_MAX_LENGTH);
if (!reference)
goto end;
/* rebase relative reference path */
if (!path_is_absolute(ref_path))
{
fill_pathname_resolve_relative(reference,
path, ref_path, PATH_MAX_LENGTH);
}
else
strlcpy(reference, ref_path, PATH_MAX_LENGTH);
}
end:
if (line)
free(line);
return reference;
}
/**
* video_shader_read_preset:
* @path : File to read
*
* Reads a preset from disk.
* If the preset is a reference preset, the referenced preset
* is loaded instead.
*
* Returns the read preset as a config object.
*
* The returned config object needs to be freed.
**/
config_file_t *video_shader_read_preset(const char *path)
{
config_file_t *conf;
char *reference = video_shader_read_reference_path(path);
if (reference)
{
conf = config_file_new_from_path_to_string(reference);
free(reference);
}
else
conf = config_file_new_from_path_to_string(path);
return conf;
}
/**
* video_shader_read_conf_preset:
* @conf : Preset file to read from.
* @shader : Shader passes handle.
*
* Loads preset file and all associated state (passes,
* textures, imports, etc).
*
* Returns: true (1) if successful, otherwise false (0).
**/
bool video_shader_read_conf_preset(config_file_t *conf,
struct video_shader *shader)
{
unsigned i;
union string_list_elem_attr attr;
unsigned shaders = 0;
settings_t *settings = config_get_ptr();
struct string_list *file_list = NULL;
bool watch_files = settings->bools.video_shader_watch_files;
memset(shader, 0, sizeof(*shader));
if (!config_get_uint(conf, "shaders", &shaders))
{
RARCH_ERR("Cannot find \"shaders\" param.\n");
return false;
}
if (!shaders)
{
RARCH_ERR("Need to define at least 1 shader.\n");
return false;
}
if (!config_get_int(conf, "feedback_pass",
&shader->feedback_pass))
shader->feedback_pass = -1;
shader->passes = MIN(shaders, GFX_MAX_SHADERS);
attr.i = 0;
strlcpy(shader->path, conf->path, sizeof(shader->path));
if (watch_files)
{
if (file_change_data)
frontend_driver_watch_path_for_changes(NULL,
0, &file_change_data);
file_change_data = NULL;
file_list = string_list_new();
string_list_append(file_list, conf->path, attr);
}
for (i = 0; i < shader->passes; i++)
{
if (!video_shader_parse_pass(conf, &shader->pass[i], i))
{
if (file_list)
{
string_list_free(file_list);
file_list = NULL;
}
return false;
}
if (watch_files && file_list)
string_list_append(file_list,
shader->pass[i].source.path, attr);
}
if (watch_files)
{
int flags = PATH_CHANGE_TYPE_MODIFIED |
PATH_CHANGE_TYPE_WRITE_FILE_CLOSED |
PATH_CHANGE_TYPE_FILE_MOVED |
PATH_CHANGE_TYPE_FILE_DELETED;
frontend_driver_watch_path_for_changes(file_list,
flags, &file_change_data);
if (file_list)
string_list_free(file_list);
}
if (!video_shader_parse_textures(conf, shader))
return false;
return true;
}
/* CGP store */
static const char *scale_type_to_str(enum gfx_scale_type type)
{
switch (type)
{
case RARCH_SCALE_INPUT:
return "source";
case RARCH_SCALE_VIEWPORT:
return "viewport";
case RARCH_SCALE_ABSOLUTE:
return "absolute";
default:
break;
}
return "?";
}
static void shader_write_scale_dim(config_file_t *conf,
const char *dim,
enum gfx_scale_type type, float scale,
unsigned absolute, unsigned i)
{
char key[64];
key[0] = '\0';
snprintf(key, sizeof(key), "scale_type_%s%u", dim, i);
config_set_string(conf, key, scale_type_to_str(type));
snprintf(key, sizeof(key), "scale_%s%u", dim, i);
if (type == RARCH_SCALE_ABSOLUTE)
config_set_int(conf, key, absolute);
else
config_set_float(conf, key, scale);
}
static void shader_write_fbo(config_file_t *conf,
const struct gfx_fbo_scale *fbo, unsigned i)
{
char key[64];
key[0] = '\0';
snprintf(key, sizeof(key), "float_framebuffer%u", i);
config_set_bool(conf, key, fbo->fp_fbo);
snprintf(key, sizeof(key), "srgb_framebuffer%u", i);
config_set_bool(conf, key, fbo->srgb_fbo);
if (!fbo->valid)
return;
shader_write_scale_dim(conf, "x", fbo->type_x,
fbo->scale_x, fbo->abs_x, i);
shader_write_scale_dim(conf, "y", fbo->type_y,
fbo->scale_y, fbo->abs_y, i);
}
static void make_relative_path_portable(char *path)
{
#ifdef _WIN32
/* use '/' instead of '\' for maximum portability */
if (!path_is_absolute(path))
{
char *p;
for (p = path; *p; p++)
if (*p == '\\')
*p = '/';
}
#endif
}
/**
* video_shader_write_conf_preset:
* @conf : Preset file to write to.
* @shader : Shader passes handle.
* @preset_path : Optional path to where the preset will be written.
*
* Writes preset and all associated state (passes,
* textures, imports, etc) into @conf.
* If @preset_path is not NULL, shader paths are saved
* relative to it.
**/
void video_shader_write_conf_preset(config_file_t *conf,
const struct video_shader *shader, const char *preset_path)
{
unsigned i;
char key[64];
size_t tmp_size = PATH_MAX_LENGTH;
char *tmp = (char*)malloc(3*tmp_size);
char *tmp_rel = tmp + tmp_size;
char *tmp_base = tmp + 2*tmp_size;
if (!tmp)
return;
config_set_int(conf, "shaders", shader->passes);
if (shader->feedback_pass >= 0)
config_set_int(conf, "feedback_pass", shader->feedback_pass);
if (preset_path)
{
strlcpy(tmp_base, preset_path, tmp_size);
/* ensure we use a clean base like the shader passes and texture paths do */
path_resolve_realpath(tmp_base, tmp_size, false);
path_basedir(tmp_base);
}
for (i = 0; i < shader->passes; i++)
{
const struct video_shader_pass *pass = &shader->pass[i];
snprintf(key, sizeof(key), "shader%u", i);
if (preset_path)
{
strlcpy(tmp, pass->source.path, tmp_size);
path_relative_to(tmp_rel, tmp, tmp_base, tmp_size);
make_relative_path_portable(tmp_rel);
config_set_path(conf, key, tmp_rel);
}
else
config_set_path(conf, key, pass->source.path);
if (pass->filter != RARCH_FILTER_UNSPEC)
{
snprintf(key, sizeof(key), "filter_linear%u", i);
config_set_bool(conf, key, pass->filter == RARCH_FILTER_LINEAR);
}
snprintf(key, sizeof(key), "wrap_mode%u", i);
config_set_string(conf, key, wrap_mode_to_str(pass->wrap));
if (pass->frame_count_mod)
{
snprintf(key, sizeof(key), "frame_count_mod%u", i);
config_set_int(conf, key, pass->frame_count_mod);
}
snprintf(key, sizeof(key), "mipmap_input%u", i);
config_set_bool(conf, key, pass->mipmap);
snprintf(key, sizeof(key), "alias%u", i);
config_set_string(conf, key, pass->alias);
shader_write_fbo(conf, &pass->fbo, i);
}
if (shader->num_parameters)
{
size_t param_size = 4096 * sizeof(char);
char *parameters = (char*)malloc(param_size);
if (parameters)
{
parameters[0] = '\0';
strlcpy(parameters, shader->parameters[0].id, param_size);
for (i = 1; i < shader->num_parameters; i++)
{
/* O(n^2), but number of parameters is very limited. */
strlcat(parameters, ";", param_size);
strlcat(parameters, shader->parameters[i].id, param_size);
}
config_set_string(conf, "parameters", parameters);
for (i = 0; i < shader->num_parameters; i++)
config_set_float(conf, shader->parameters[i].id,
shader->parameters[i].current);
free(parameters);
}
}
if (shader->luts)
{
size_t tex_size = 4096 * sizeof(char);
char *textures = (char*)malloc(tex_size);
if (textures)
{
textures[0] = '\0';
strlcpy(textures, shader->lut[0].id, tex_size);
for (i = 1; i < shader->luts; i++)
{
/* O(n^2), but number of textures is very limited. */
strlcat(textures, ";", tex_size);
strlcat(textures, shader->lut[i].id, tex_size);
}
config_set_string(conf, "textures", textures);
free(textures);
for (i = 0; i < shader->luts; i++)
{
if (preset_path)
{
strlcpy(tmp, shader->lut[i].path, tmp_size);
path_relative_to(tmp_rel, tmp, tmp_base, tmp_size);
make_relative_path_portable(tmp_rel);
config_set_path(conf, shader->lut[i].id, tmp_rel);
}
else
config_set_path(conf, shader->lut[i].id, shader->lut[i].path);
if (shader->lut[i].filter != RARCH_FILTER_UNSPEC)
{
char key[128];
key[0] = '\0';
strlcpy(key, shader->lut[i].id, sizeof(key));
strlcat(key, "_linear", sizeof(key));
config_set_bool(conf, key,
shader->lut[i].filter == RARCH_FILTER_LINEAR);
}
{
char key[128];
key[0] = '\0';
strlcpy(key, shader->lut[i].id, sizeof(key));
strlcat(key, "_wrap_mode", sizeof(key));
config_set_string(conf, key,
wrap_mode_to_str(shader->lut[i].wrap));
}
{
char key[128];
key[0] = '\0';
strlcpy(key, shader->lut[i].id, sizeof(key));
strlcat(key, "_mipmap", sizeof(key));
config_set_bool(conf, key,
shader->lut[i].mipmap);
}
}
}
}
free(tmp);
}
const char *video_shader_to_str(enum rarch_shader_type type)
{
switch (type)
{
case RARCH_SHADER_CG:
return "Cg";
case RARCH_SHADER_HLSL:
return "HLSL";
case RARCH_SHADER_GLSL:
return "GLSL";
case RARCH_SHADER_SLANG:
return "Slang";
case RARCH_SHADER_METAL:
return "Metal";
case RARCH_SHADER_NONE:
return "none";
default:
break;
}
return "???";
}
/**
* video_shader_is_supported:
* Tests if a shader type is supported.
* This is only accurate once the context driver was initialized.
**/
bool video_shader_is_supported(enum rarch_shader_type type)
{
gfx_ctx_flags_t flags;
enum display_flags testflag = GFX_CTX_FLAGS_NONE;
flags.flags = 0;
switch (type)
{
case RARCH_SHADER_SLANG:
testflag = GFX_CTX_FLAGS_SHADERS_SLANG;
break;
case RARCH_SHADER_GLSL:
testflag = GFX_CTX_FLAGS_SHADERS_GLSL;
break;
case RARCH_SHADER_CG:
testflag = GFX_CTX_FLAGS_SHADERS_CG;
break;
case RARCH_SHADER_HLSL:
testflag = GFX_CTX_FLAGS_SHADERS_HLSL;
break;
case RARCH_SHADER_NONE:
default:
return false;
}
video_context_driver_get_flags(&flags);
return BIT32_GET(flags.flags, testflag);
}
const char *video_shader_get_preset_extension(enum rarch_shader_type type)
{
switch (type)
{
case RARCH_SHADER_GLSL:
return ".glslp";
case RARCH_SHADER_SLANG:
return ".slangp";
case RARCH_SHADER_HLSL:
case RARCH_SHADER_CG:
return ".cgp";
default:
break;
}
return NULL;
}
bool video_shader_any_supported(void)
{
gfx_ctx_flags_t flags;
flags.flags = 0;
video_context_driver_get_flags(&flags);
return
BIT32_GET(flags.flags, GFX_CTX_FLAGS_SHADERS_SLANG) ||
BIT32_GET(flags.flags, GFX_CTX_FLAGS_SHADERS_GLSL) ||
BIT32_GET(flags.flags, GFX_CTX_FLAGS_SHADERS_CG) ||
BIT32_GET(flags.flags, GFX_CTX_FLAGS_SHADERS_HLSL);
}
enum rarch_shader_type video_shader_get_type_from_ext(const char *ext,
bool *is_preset)
{
if (string_is_empty(ext))
return RARCH_SHADER_NONE;
if (strlen(ext) > 1 && ext[0] == '.')
ext++;
if (is_preset)
*is_preset =
string_is_equal_case_insensitive(ext, "cgp") ||
string_is_equal_case_insensitive(ext, "glslp") ||
string_is_equal_case_insensitive(ext, "slangp");
if (string_is_equal_case_insensitive(ext, "cgp") ||
string_is_equal_case_insensitive(ext, "cg")
)
return RARCH_SHADER_CG;
if (string_is_equal_case_insensitive(ext, "glslp") ||
string_is_equal_case_insensitive(ext, "glsl")
)
return RARCH_SHADER_GLSL;
if (string_is_equal_case_insensitive(ext, "slangp") ||
string_is_equal_case_insensitive(ext, "slang")
)
return RARCH_SHADER_SLANG;
return RARCH_SHADER_NONE;
}
/**
* video_shader_parse_type:
* @path : Shader path.
*
* Parses type of shader.
*
* Returns: value of shader type if it could be determined,
* otherwise RARCH_SHADER_NONE.
**/
enum rarch_shader_type video_shader_parse_type(const char *path)
{
return video_shader_get_type_from_ext(path_get_extension(path), NULL);
}
bool video_shader_check_for_changes(void)
{
if (!file_change_data)
return false;
return frontend_driver_check_for_path_changes(file_change_data);
}
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