RetroArch/gfx/font_driver.c

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/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2016 - 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-
* ation, either version 3 of the License, or (at your option) any later version.
*
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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
* PURPOSE. See the GNU General Public License for more details.
*
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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/>.
*/
#include "font_driver.h"
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#include "video_thread_wrapper.h"
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#include "../configuration.h"
#include "../verbosity.h"
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#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
static const font_renderer_driver_t *font_backends[] = {
#ifdef HAVE_FREETYPE
&freetype_font_renderer,
#endif
#if defined(__APPLE__) && defined(HAVE_CORETEXT)
&coretext_font_renderer,
#endif
#ifdef HAVE_STB_FONT
&stb_font_renderer,
#endif
&bitmap_font_renderer,
NULL
};
static const struct font_renderer *font_osd_driver;
static void *font_osd_data;
int font_renderer_create_default(const void **data, void **handle,
const char *font_path, unsigned font_size)
{
unsigned i;
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const font_renderer_driver_t **drv =
(const font_renderer_driver_t**)data;
for (i = 0; font_backends[i]; i++)
{
const char *path = font_path;
if (!path)
path = font_backends[i]->get_default_font();
if (!path)
continue;
*handle = font_backends[i]->init(path, font_size);
if (*handle)
{
RARCH_LOG("Using font rendering backend: %s.\n",
font_backends[i]->ident);
*drv = font_backends[i];
return 1;
}
else
RARCH_ERR("Failed to create rendering backend: %s.\n",
font_backends[i]->ident);
}
*drv = NULL;
*handle = NULL;
return 0;
}
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#ifdef HAVE_D3D
static const font_renderer_t *d3d_font_backends[] = {
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#if defined(_XBOX1)
&d3d_xdk1_font,
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#elif defined(_XBOX360)
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&d3d_xbox360_font,
#elif defined(_WIN32)
&d3d_win32_font,
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#endif
};
static bool d3d_font_init_first(
const void **font_driver, void **font_handle,
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void *video_data, const char *font_path, float font_size)
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{
unsigned i;
for (i = 0; i < ARRAY_SIZE(d3d_font_backends); i++)
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{
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void *data = d3d_font_backends[i]->init(
video_data, font_path, font_size);
if (!data)
continue;
*font_driver = d3d_font_backends[i];
*font_handle = data;
return true;
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}
return false;
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}
#endif
#ifdef HAVE_OPENGL
static const font_renderer_t *gl_font_backends[] = {
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&gl_raster_font,
#if defined(HAVE_LIBDBGFONT)
&libdbg_font,
#endif
NULL,
};
static bool gl_font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size)
{
unsigned i;
for (i = 0; gl_font_backends[i]; i++)
{
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void *data = gl_font_backends[i]->init(
video_data, font_path, font_size);
if (!data)
continue;
*font_driver = gl_font_backends[i];
*font_handle = data;
return true;
}
return false;
}
#endif
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#ifdef HAVE_VULKAN
static const font_renderer_t *vulkan_font_backends[] = {
&vulkan_raster_font,
NULL,
};
static bool vulkan_font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size)
{
unsigned i;
for (i = 0; vulkan_font_backends[i]; i++)
{
void *data = vulkan_font_backends[i]->init(video_data, font_path, font_size);
if (!data)
continue;
*font_driver = vulkan_font_backends[i];
*font_handle = data;
return true;
}
return false;
}
#endif
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#ifdef HAVE_VITA2D
static const font_renderer_t *vita2d_font_backends[] = {
&vita2d_vita_font
};
static bool vita2d_font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size)
{
unsigned i;
for (i = 0; vita2d_font_backends[i]; i++)
{
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void *data = vita2d_font_backends[i]->init(
video_data, font_path, font_size);
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if (!data)
continue;
*font_driver = vita2d_font_backends[i];
*font_handle = data;
return true;
}
return false;
}
#endif
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static bool font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path, float font_size,
enum font_driver_render_api api)
{
if (font_path && !font_path[0])
font_path = NULL;
switch (api)
{
#ifdef HAVE_D3D
case FONT_DRIVER_RENDER_DIRECT3D_API:
return d3d_font_init_first(font_driver, font_handle,
video_data, font_path, font_size);
#endif
#ifdef HAVE_OPENGL
case FONT_DRIVER_RENDER_OPENGL_API:
return gl_font_init_first(font_driver, font_handle,
video_data, font_path, font_size);
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#endif
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#ifdef HAVE_VULKAN
case FONT_DRIVER_RENDER_VULKAN_API:
return vulkan_font_init_first(font_driver, font_handle,
video_data, font_path, font_size);
#endif
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#ifdef HAVE_VITA2D
case FONT_DRIVER_RENDER_VITA2D:
return vita2d_font_init_first(font_driver, font_handle,
video_data, font_path, font_size);
#endif
case FONT_DRIVER_RENDER_DONT_CARE:
/* TODO/FIXME - lookup graphics driver's 'API' */
break;
default:
break;
}
return false;
}
bool font_driver_has_render_msg(void)
{
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if (!font_osd_driver || !font_osd_driver->render_msg)
return false;
return true;
}
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void font_driver_render_msg(void *font_data,
const char *msg, const struct font_params *params)
{
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if (font_osd_driver && font_osd_driver->render_msg)
font_osd_driver->render_msg(font_data
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? font_data : font_osd_data, msg, params);
}
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void font_driver_bind_block(void *font_data, void *block)
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{
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void *new_font_data = font_data
? font_data : font_osd_data;
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if (font_osd_driver && font_osd_driver->bind_block)
font_osd_driver->bind_block(new_font_data, block);
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}
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void font_driver_flush(void *data)
{
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if (font_osd_driver && font_osd_driver->flush)
font_osd_driver->flush(data);
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}
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int font_driver_get_message_width(void *data,
const char *msg, unsigned len, float scale)
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{
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if (!font_osd_driver || !font_osd_driver->get_message_width)
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return -1;
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return font_osd_driver->get_message_width(data, msg, len, scale);
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}
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void font_driver_free(void *data)
{
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if (font_osd_driver && font_osd_driver->free)
font_osd_driver->free(data ? data : font_osd_data);
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if (data)
return;
font_osd_data = NULL;
font_osd_driver = NULL;
}
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bool font_driver_init_first(
const void **font_driver, void **font_handle,
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void *data, const char *font_path, float font_size,
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bool threading_hint,
enum font_driver_render_api api)
{
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const void **new_font_driver = font_driver ? font_driver
: (const void**)&font_osd_driver;
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void **new_font_handle = font_handle ? font_handle
: (void**)&font_osd_data;
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#ifdef HAVE_THREADS
settings_t *settings = config_get_ptr();
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if (threading_hint
&& settings->video.threaded
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&& !video_driver_is_hw_context())
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return video_thread_font_init(new_font_driver, new_font_handle,
data, font_path, font_size, api, font_init_first);
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#endif
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return font_init_first(new_font_driver, new_font_handle,
data, font_path, font_size, api);
}
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