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RetroArch/gfx/video_shader_parse.c
aliaspider 5bc78d3ad5 (D3D11) Implement slang shader specification using Spirv-Cross. 
(incomplete)
2018-01-31 01:08:36 +01:00

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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>
#include <libretro.h>
#include <compat/posix_string.h>
#include <compat/msvc.h>
#include <compat/strl.h>
#include <file/file_path.h>
#include "video_driver.h" /* video_context_driver_get_api */
#include <rhash.h>
#include <string/stdstring.h>
#include <streams/interface_stream.h>
#include <streams/file_stream.h>
#include <lists/string_list.h>
#include "../msg_hash.h"
#include "../verbosity.h"
#include "../configuration.h"
#include "../frontend/frontend_driver.h"
#include "video_shader_parse.h"
#ifdef HAVE_SLANG
#include "drivers_shader/slang_preprocess.h"
#endif
#define WRAP_MODE_CLAMP_TO_BORDER 0x3676ed11U
#define WRAP_MODE_CLAMP_TO_EDGE 0x9427a608U
#define WRAP_MODE_REPEAT 0x192dec66U
#define WRAP_MODE_MIRRORED_REPEAT 0x117ac9a9U
#define SCALE_TYPE_SOURCE 0x1c3aff76U
#define SCALE_TYPE_VIEWPORT 0xe8f01225U
#define SCALE_TYPE_ABSOLUTE 0x8cc74f64U
#define SEMANTIC_CAPTURE 0xb2f5d639U
#define SEMANTIC_CAPTURE_PREVIOUS 0x64d6d495U
#define SEMANTIC_TRANSITION 0x96486f70U
#define SEMANTIC_TRANSITION_PREVIOUS 0x536abbacU
#define SEMANTIC_TRANSITION_COUNT 0x3ef2af78U
#define SEMANTIC_PYTHON 0x15efc547U
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)
{
uint32_t wrap_mode_hash = djb2_calculate(wrap_mode);
switch (wrap_mode_hash)
{
case WRAP_MODE_CLAMP_TO_BORDER:
return RARCH_WRAP_BORDER;
case WRAP_MODE_CLAMP_TO_EDGE:
return RARCH_WRAP_EDGE;
case WRAP_MODE_REPEAT:
return RARCH_WRAP_REPEAT;
case 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 * sizeof(char);
char *tmp_str = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
char *tmp_path = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
struct gfx_fbo_scale *scale = NULL;
bool tmp_bool = false;
float fattr = 0.0f;
int iattr = 0;
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] =
tmp_str[0] = shader_name[0] = filter_name_buf[0] =
wrap_name_buf[0] = wrap_mode[0] = frame_count_mod_buf[0] = '\0';
srgb_output_buf[0] = '\0';
/* Source */
snprintf(shader_name, sizeof(shader_name), "shader%u", i);
if (!config_get_path(conf, shader_name, tmp_str, path_size))
{
RARCH_ERR("Couldn't parse shader source (%s).\n", shader_name);
goto error;
}
strlcpy(tmp_path, tmp_str, path_size);
path_resolve_realpath(tmp_path, path_size);
if (!filestream_exists(tmp_path))
strlcpy(pass->source.path, tmp_str, sizeof(pass->source.path));
else
strlcpy(pass->source.path, tmp_path, sizeof(pass->source.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)
{
uint32_t scale_type_x_hash = djb2_calculate(scale_type_x);
switch (scale_type_x_hash)
{
case SCALE_TYPE_SOURCE:
scale->type_x = RARCH_SCALE_INPUT;
break;
case SCALE_TYPE_VIEWPORT:
scale->type_x = RARCH_SCALE_VIEWPORT;
break;
case SCALE_TYPE_ABSOLUTE:
scale->type_x = RARCH_SCALE_ABSOLUTE;
break;
default:
RARCH_ERR("Invalid attribute.\n");
goto error;
}
}
if (*scale_type_y)
{
uint32_t scale_type_y_hash = djb2_calculate(scale_type_y);
switch (scale_type_y_hash)
{
case SCALE_TYPE_SOURCE:
scale->type_y = RARCH_SCALE_INPUT;
break;
case SCALE_TYPE_VIEWPORT:
scale->type_y = RARCH_SCALE_VIEWPORT;
break;
case SCALE_TYPE_ABSOLUTE:
scale->type_y = RARCH_SCALE_ABSOLUTE;
break;
default:
RARCH_ERR("Invalid attribute.\n");
goto error;
}
}
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;
}
}
free(tmp_str);
free(tmp_path);
return true;
error:
free(tmp_str);
free(tmp_path);
return false;
}
/**
* 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 * sizeof(char);
const char *id = NULL;
char *save = NULL;
char *textures = (char*)malloc(1024 * sizeof(char));
char *tmp_path = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
textures[0] = '\0';
if (!config_get_array(conf, "textures", textures, 1024 * sizeof(char)))
{
free(textures);
free(tmp_path);
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, shader->lut[shader->luts].path,
sizeof(shader->lut[shader->luts].path)))
{
RARCH_ERR("Cannot find path to texture \"%s\" ...\n", id);
goto error;
}
strlcpy(tmp_path, shader->lut[shader->luts].path,
path_size);
path_resolve_realpath(tmp_path, path_size);
if (filestream_exists(tmp_path))
{
strlcpy(shader->lut[shader->luts].path,
tmp_path, sizeof(shader->lut[shader->luts].path));
}
strlcpy(shader->lut[shader->luts].id, id,
sizeof(shader->lut[shader->luts].id));
snprintf(id_filter, sizeof(id_filter), "%s_linear", id);
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;
snprintf(id_wrap, sizeof(id_wrap), "%s_wrap_mode", id);
if (config_get_array(conf, id_wrap, wrap_mode, sizeof(wrap_mode)))
shader->lut[shader->luts].wrap = wrap_str_to_mode(wrap_mode);
snprintf(id_mipmap, sizeof(id_mipmap), "%s_mipmap", id);
if (config_get_bool(conf, id_mipmap, &mipmap))
shader->lut[shader->luts].mipmap = mipmap;
else
shader->lut[shader->luts].mipmap = false;
}
free(textures);
free(tmp_path);
return true;
error:
free(textures);
free(tmp_path);
return false;
}
/**
* 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);
char *parameters = (char*)malloc(4096 * sizeof(char));
const char *id = NULL;
char *save = NULL;
if (!conf)
{
free(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++)
{
intfstream_t *file = NULL;
size_t line_size = 4096 * sizeof(char);
char *line = (char*)malloc(4096 * sizeof(char));
const char *path = shader->pass[i].source.path;
if (string_is_empty(path))
{
free(line);
continue;
}
#ifdef HAVE_SLANG
/* 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(shader->pass[i].source.path, shader))
{
free(line);
continue;
}
/* If that doesn't work, fallback to the old path.
* Ideally, we'd get rid of this path sooner or later. */
#endif
file = intfstream_open_file(path,
RETRO_VFS_FILE_ACCESS_READ,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!file)
{
free(line);
continue;
}
line[0] = '\0';
while (shader->num_parameters < ARRAY_SIZE(shader->parameters)
&& intfstream_gets(file, line, line_size))
{
int 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);
RARCH_LOG("Found #pragma parameter %s (%s) %f %f %f %f\n",
param->desc, param->id, param->initial,
param->minimum, param->maximum, param->step);
param->current = param->initial;
shader->num_parameters++;
param++;
}
free(line);
intfstream_close(file);
free(file);
}
if (conf && !video_shader_resolve_current_parameters(conf, shader))
return false;
return true;
}
/**
* video_shader_parse_imports:
* @conf : Preset file to read from.
* @shader : Shader passes handle.
*
* Resolves import parameters belonging to shaders.
*
* Returns: true (1) if successful, otherwise false (0).
**/
static bool video_shader_parse_imports(config_file_t *conf,
struct video_shader *shader)
{
size_t path_size = PATH_MAX_LENGTH * sizeof(char);
char *imports = (char*)malloc(1024 * sizeof(char));
char *tmp_str = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
const char *id = NULL;
char *save = NULL;
imports[0] = tmp_str[0] = '\0';
if (!config_get_array(conf, "imports", imports,
1024 * sizeof(char)))
{
free(imports);
free(tmp_str);
return true;
}
for (id = strtok_r(imports, ";", &save);
id && shader->variables < GFX_MAX_VARIABLES;
shader->variables++, id = strtok_r(NULL, ";", &save))
{
uint32_t semantic_hash;
char semantic_buf[64];
char wram_buf[64];
char input_slot_buf[64];
char mask_buf[64];
char equal_buf[64];
char semantic[64];
unsigned addr = 0;
unsigned mask = 0;
unsigned equal = 0;
struct state_tracker_uniform_info *var =
&shader->variable[shader->variables];
semantic_buf[0] = wram_buf[0] = input_slot_buf[0] =
mask_buf[0] = equal_buf[0] = semantic[0] = '\0';
strlcpy(var->id, id, sizeof(var->id));
snprintf(semantic_buf, sizeof(semantic_buf), "%s_semantic", id);
snprintf(wram_buf, sizeof(wram_buf), "%s_wram", id);
snprintf(input_slot_buf, sizeof(input_slot_buf), "%s_input_slot", id);
snprintf(mask_buf, sizeof(mask_buf), "%s_mask", id);
snprintf(equal_buf, sizeof(equal_buf), "%s_equal", id);
if (!config_get_array(conf, semantic_buf, semantic, sizeof(semantic)))
{
RARCH_ERR("No semantic for import variable.\n");
goto error;
}
semantic_hash = djb2_calculate(semantic);
switch (semantic_hash)
{
case SEMANTIC_CAPTURE:
var->type = RARCH_STATE_CAPTURE;
break;
case SEMANTIC_TRANSITION:
var->type = RARCH_STATE_TRANSITION;
break;
case SEMANTIC_TRANSITION_COUNT:
var->type = RARCH_STATE_TRANSITION_COUNT;
break;
case SEMANTIC_CAPTURE_PREVIOUS:
var->type = RARCH_STATE_CAPTURE_PREV;
break;
case SEMANTIC_TRANSITION_PREVIOUS:
var->type = RARCH_STATE_TRANSITION_PREV;
break;
case SEMANTIC_PYTHON:
var->type = RARCH_STATE_PYTHON;
break;
default:
RARCH_ERR("Invalid semantic.\n");
goto error;
}
if (var->type != RARCH_STATE_PYTHON)
{
unsigned input_slot = 0;
if (config_get_uint(conf, input_slot_buf, &input_slot))
{
switch (input_slot)
{
case 1:
var->ram_type = RARCH_STATE_INPUT_SLOT1;
break;
case 2:
var->ram_type = RARCH_STATE_INPUT_SLOT2;
break;
default:
RARCH_ERR("Invalid input slot for import.\n");
goto error;
}
}
else if (config_get_hex(conf, wram_buf, &addr))
{
var->ram_type = RARCH_STATE_WRAM;
var->addr = addr;
}
else
{
RARCH_ERR("No address assigned to semantic.\n");
goto error;
}
}
if (config_get_hex(conf, mask_buf, &mask))
var->mask = mask;
if (config_get_hex(conf, equal_buf, &equal))
var->equal = equal;
}
if (config_get_path(conf, "import_script", tmp_str, path_size))
strlcpy(shader->script_path, tmp_str, sizeof(shader->script_path));
config_get_array(conf, "import_script_class",
shader->script_class, sizeof(shader->script_class));
free(imports);
free(tmp_str);
return true;
error:
free(imports);
free(tmp_str);
return false;
}
/**
* video_shader_read_conf_cgp:
* @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_cgp(config_file_t *conf,
struct video_shader *shader)
{
unsigned i;
unsigned shaders = 0;
settings_t *settings = config_get_ptr();
struct string_list *file_list = NULL;
union string_list_elem_attr attr = {0};
(void)file_list;
memset(shader, 0, sizeof(*shader));
shader->type = RARCH_SHADER_CG;
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);
if (settings->bools.video_shader_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);
return false;
}
if (settings->bools.video_shader_watch_files)
{
string_list_append(file_list, shader->pass[i].source.path, attr);
}
}
if (settings->bools.video_shader_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);
string_list_free(file_list);
}
if (!video_shader_parse_textures(conf, shader))
return false;
if (!video_shader_parse_imports(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);
}
/**
* import_semantic_to_string:
* @type : Import semantic type from state tracker.
*
* Translates import semantic to human-readable string identifier.
*
* Returns: human-readable string identifier of import semantic.
**/
static const char *import_semantic_to_str(enum state_tracker_type type)
{
switch (type)
{
case RARCH_STATE_CAPTURE:
return "capture";
case RARCH_STATE_TRANSITION:
return "transition";
case RARCH_STATE_TRANSITION_COUNT:
return "transition_count";
case RARCH_STATE_CAPTURE_PREV:
return "capture_previous";
case RARCH_STATE_TRANSITION_PREV:
return "transition_previous";
case RARCH_STATE_PYTHON:
return "python";
default:
break;
}
return "?";
}
/**
* shader_write_variable:
* @conf : Preset file to read from.
* @info : State tracker uniform info handle.
*
* Writes variable to shader preset file.
**/
static void shader_write_variable(config_file_t *conf,
const struct state_tracker_uniform_info *info)
{
char semantic_buf[64];
char wram_buf[64];
char input_slot_buf[64];
char mask_buf[64];
char equal_buf[64];
const char *id = info->id;
semantic_buf[0] = wram_buf[0] = input_slot_buf[0] =
mask_buf[0] = equal_buf[0] = '\0';
snprintf(semantic_buf, sizeof(semantic_buf), "%s_semantic", id);
snprintf(wram_buf, sizeof(wram_buf), "%s_wram", id);
snprintf(input_slot_buf, sizeof(input_slot_buf), "%s_input_slot", id);
snprintf(mask_buf, sizeof(mask_buf), "%s_mask", id);
snprintf(equal_buf, sizeof(equal_buf), "%s_equal", id);
config_set_string(conf, semantic_buf,
import_semantic_to_str(info->type));
config_set_hex(conf, mask_buf, info->mask);
config_set_hex(conf, equal_buf, info->equal);
switch (info->ram_type)
{
case RARCH_STATE_INPUT_SLOT1:
config_set_int(conf, input_slot_buf, 1);
break;
case RARCH_STATE_INPUT_SLOT2:
config_set_int(conf, input_slot_buf, 2);
break;
case RARCH_STATE_WRAM:
config_set_hex(conf, wram_buf, info->addr);
break;
case RARCH_STATE_NONE:
break;
}
}
/**
* video_shader_write_conf_cgp:
* @conf : Preset file to read from.
* @shader : Shader passes handle.
*
* Saves preset and all associated state (passes,
* textures, imports, etc) to disk.
**/
void video_shader_write_conf_cgp(config_file_t *conf,
struct video_shader *shader)
{
unsigned i;
config_set_int(conf, "shaders", shader->passes);
if (shader->feedback_pass >= 0)
config_set_int(conf, "feedback_pass", shader->feedback_pass);
for (i = 0; i < shader->passes; i++)
{
char key[64];
size_t tmp_size = PATH_MAX_LENGTH * sizeof(char);
char *tmp = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
const struct video_shader_pass *pass = &shader->pass[i];
key[0] = '\0';
snprintf(key, sizeof(key), "shader%u", i);
strlcpy(tmp, pass->source.path, tmp_size);
if (!path_is_absolute(tmp))
path_resolve_realpath(tmp, tmp_size);
config_set_string(conf, key, tmp);
free(tmp);
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(4096 * sizeof(char));
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(4096 * sizeof(char));
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++)
{
char key[64];
key[0] = '\0';
config_set_string(conf, shader->lut[i].id, shader->lut[i].path);
if (shader->lut[i].filter != RARCH_FILTER_UNSPEC)
{
snprintf(key, sizeof(key), "%s_linear", shader->lut[i].id);
config_set_bool(conf, key,
shader->lut[i].filter == RARCH_FILTER_LINEAR);
}
snprintf(key, sizeof(key), "%s_wrap_mode", shader->lut[i].id);
config_set_string(conf, key, wrap_mode_to_str(shader->lut[i].wrap));
snprintf(key, sizeof(key), "%s_mipmap", shader->lut[i].id);
config_set_bool(conf, key, shader->lut[i].mipmap);
}
}
if (*shader->script_path)
config_set_string(conf, "import_script", shader->script_path);
if (*shader->script_class)
config_set_string(conf, "import_script_class", shader->script_class);
if (shader->variables)
{
size_t var_tmp = 4096 * sizeof(char);
char *variables = (char*)malloc(4096 * sizeof(char));
variables[0] = '\0';
strlcpy(variables, shader->variable[0].id, var_tmp);
for (i = 1; i < shader->variables; i++)
{
strlcat(variables, ";", var_tmp);
strlcat(variables, shader->variable[i].id, var_tmp);
}
config_set_string(conf, "imports", variables);
for (i = 0; i < shader->variables; i++)
shader_write_variable(conf, &shader->variable[i]);
free(variables);
}
}
/**
* video_shader_parse_type:
* @path : Shader path.
* @fallback : Fallback shader type in case no
* type could be found.
*
* Parses type of shader.
*
* Returns: value of shader type on success, otherwise will return
* user-supplied @fallback value.
**/
enum rarch_shader_type video_shader_parse_type(const char *path,
enum rarch_shader_type fallback)
{
enum rarch_shader_type shader_type = RARCH_SHADER_NONE;
enum gfx_ctx_api api = video_context_driver_get_api();
#ifdef HAVE_CG
bool cg_supported = true;
#else
bool cg_supported = false;
#endif
if (!path)
return fallback;
switch (msg_hash_to_file_type(
msg_hash_calculate(path_get_extension(path))))
{
case FILE_TYPE_SHADER_CG:
case FILE_TYPE_SHADER_PRESET_CGP:
shader_type = RARCH_SHADER_CG;
break;
case FILE_TYPE_SHADER_GLSL:
case FILE_TYPE_SHADER_PRESET_GLSLP:
shader_type = RARCH_SHADER_GLSL;
break;
case FILE_TYPE_SHADER_SLANG:
case FILE_TYPE_SHADER_PRESET_SLANGP:
shader_type = RARCH_SHADER_SLANG;
break;
default:
break;
}
switch (api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
if (shader_type == RARCH_SHADER_GLSL
|| (cg_supported && shader_type == RARCH_SHADER_CG))
return shader_type;
break;
case GFX_CTX_DIRECT3D9_API:
if (cg_supported && shader_type == RARCH_SHADER_CG)
return shader_type;
break;
case GFX_CTX_DIRECT3D11_API:
case GFX_CTX_VULKAN_API:
case GFX_CTX_GX2_API:
if (shader_type == RARCH_SHADER_SLANG)
return shader_type;
break;
case GFX_CTX_GDI_API:
case GFX_CTX_OPENVG_API:
case GFX_CTX_DIRECT3D8_API:
case GFX_CTX_NONE:
default:
break;
}
RARCH_WARN("Rendering context is incompatible with shader type: %s\n", path);
return fallback;
}
/**
* video_shader_resolve_relative:
* @shader : Shader pass handle.
* @ref_path : Relative shader path.
*
* Resolves relative shader path (@ref_path) into absolute
* shader paths.
**/
void video_shader_resolve_relative(struct video_shader *shader,
const char *ref_path)
{
unsigned i;
size_t tmp_path_size = 4096 * sizeof(char);
char *tmp_path = (char*)malloc(4096 * sizeof(char));
tmp_path[0] = '\0';
for (i = 0; i < shader->passes; i++)
{
if (!*shader->pass[i].source.path)
continue;
strlcpy(tmp_path, shader->pass[i].source.path, tmp_path_size);
fill_pathname_resolve_relative(shader->pass[i].source.path,
ref_path, tmp_path, sizeof(shader->pass[i].source.path));
}
for (i = 0; i < shader->luts; i++)
{
strlcpy(tmp_path, shader->lut[i].path, tmp_path_size);
fill_pathname_resolve_relative(shader->lut[i].path,
ref_path, tmp_path, sizeof(shader->lut[i].path));
}
if (*shader->script_path)
{
strlcpy(tmp_path, shader->script_path, tmp_path_size);
fill_pathname_resolve_relative(shader->script_path,
ref_path, tmp_path, sizeof(shader->script_path));
}
free(tmp_path);
}
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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