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RetroArch/gfx/drivers_font/ctr_font.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2016 - 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 <stdio.h>
#include <string.h>
#include <malloc.h>
#include <math.h>
#include <encodings/utf.h>
#include <3ds.h>
#include "../font_driver.h"
#include "../video_driver.h"
#include "../common/ctr_common.h"
#include "../drivers/ctr_gu.h"
#include "../../ctr/gpu_old.h"
#include "../../configuration.h"
#include "../../verbosity.h"
/* FIXME: this is just a workaround to avoid
* using ctrGuCopyImage, since it seems to cause
* a freeze/blackscreen when used here. */
//#define FONT_TEXTURE_IN_VRAM
typedef struct
{
ctr_texture_t texture;
ctr_scale_vector_t scale_vector;
const font_renderer_driver_t* font_driver;
void* font_data;
} ctr_font_t;
static void* ctr_font_init_font(void* data, const char* font_path, float font_size)
{
const struct font_atlas* atlas = NULL;
ctr_font_t* font = (ctr_font_t*)calloc(1, sizeof(*font));
ctr_video_t* ctr = (ctr_video_t*)data;
if (!font)
return NULL;
font_size = 10;
if (!font_renderer_create_default((const void**)&font->font_driver,
&font->font_data, font_path, font_size))
{
RARCH_WARN("Couldn't initialize font renderer.\n");
free(font);
return NULL;
}
atlas = font->font_driver->get_atlas(font->font_data);
font->texture.width = next_pow2(atlas->width);
font->texture.height = next_pow2(atlas->height);
#if FONT_TEXTURE_IN_VRAM
font->texture.data = vramAlloc(font->texture.width * font->texture.height);
uint8_t* tmp = linearAlloc(font->texture.width * font->texture.height);
#else
font->texture.data = linearAlloc(font->texture.width * font->texture.height);
uint8_t* tmp = font->texture.data;
#endif
int i, j;
const uint8_t* src = atlas->buffer;
for (j = 0; (j < atlas->height) && (j < font->texture.height); j++)
for (i = 0; (i < atlas->width) && (i < font->texture.width); i++)
tmp[ctrgu_swizzle_coords(i, j, font->texture.width)] = src[i + j * atlas->width];
GSPGPU_FlushDataCache(tmp, font->texture.width * font->texture.height);
#if FONT_TEXTURE_IN_VRAM
ctrGuCopyImage(true, tmp, font->texture.width >> 2, font->texture.height, CTRGU_RGBA8, true,
font->texture.data, font->texture.width >> 2, CTRGU_RGBA8, true);
linearFree(tmp);
#endif
ctr_set_scale_vector(&font->scale_vector, 400, 240, font->texture.width, font->texture.height);
return font;
}
static void ctr_font_free_font(void* data)
{
ctr_font_t* font = (ctr_font_t*)data;
if (!font)
return;
if (font->font_driver && font->font_data)
font->font_driver->free(font->font_data);
#ifdef FONT_TEXTURE_IN_VRAM
vramFree(font->texture.data);
#else
linearFree(font->texture.data);
#endif
free(font);
}
static int ctr_font_get_message_width(void* data, const char* msg,
unsigned msg_len, float scale)
{
ctr_font_t* font = (ctr_font_t*)data;
unsigned i;
int delta_x = 0;
if (!font)
return 0;
for (i = 0; i < msg_len; i++)
{
const char* msg_tmp = &msg[i];
unsigned code = utf8_walk(&msg_tmp);
unsigned skip = msg_tmp - &msg[i];
if (skip > 1)
i += skip - 1;
const struct font_glyph* glyph =
font->font_driver->get_glyph(font->font_data, code);
if (!glyph) /* Do something smarter here ... */
glyph = font->font_driver->get_glyph(font->font_data, '?');
if (!glyph)
continue;
delta_x += glyph->advance_x;
}
return delta_x * scale;
}
static void ctr_font_render_line(
ctr_font_t* font, const char* msg, unsigned msg_len,
float scale, const unsigned int color, float pos_x,
float pos_y, unsigned text_align)
{
int x, y, delta_x, delta_y;
unsigned width, height;
unsigned i;
ctr_video_t* ctr = (ctr_video_t*)video_driver_get_ptr(false);
ctr_vertex_t* v;
video_driver_get_size(&width, &height);
x = roundf(pos_x * width);
y = roundf((1.0f - pos_y) * height);
delta_x = 0;
delta_y = 0;
switch (text_align)
{
case TEXT_ALIGN_RIGHT:
x -= ctr_font_get_message_width(font, msg, msg_len, scale);
break;
case TEXT_ALIGN_CENTER:
x -= ctr_font_get_message_width(font, msg, msg_len, scale) / 2;
break;
}
if ((ctr->vertex_cache.size - (ctr->vertex_cache.current - ctr->vertex_cache.buffer)) < msg_len)
ctr->vertex_cache.current = ctr->vertex_cache.buffer;
v = ctr->vertex_cache.current;
for (i = 0; i < msg_len; i++)
{
int off_x, off_y, tex_x, tex_y, width, height;
const char* msg_tmp = &msg[i];
unsigned code = utf8_walk(&msg_tmp);
unsigned skip = msg_tmp - &msg[i];
if (skip > 1)
i += skip - 1;
const struct font_glyph* glyph =
font->font_driver->get_glyph(font->font_data, code);
if (!glyph) /* Do something smarter here ... */
glyph = font->font_driver->get_glyph(font->font_data, '?');
if (!glyph)
continue;
off_x = glyph->draw_offset_x;
off_y = glyph->draw_offset_y;
tex_x = glyph->atlas_offset_x;
tex_y = glyph->atlas_offset_y;
width = glyph->width;
height = glyph->height;
v->x0 = x + off_x + delta_x * scale;
v->y0 = y + off_y + delta_y * scale;
v->u0 = tex_x;
v->v0 = tex_y;
v->x1 = v->x0 + width * scale;
v->y1 = v->y0 + height * scale;
v->u1 = v->u0 + width;
v->v1 = v->v0 + height;
v++;
delta_x += glyph->advance_x;
delta_y += glyph->advance_y;
}
if (v == ctr->vertex_cache.current)
return;
ctrGuSetVertexShaderFloatUniform(0, (float*)&font->scale_vector, 1);
GSPGPU_FlushDataCache(ctr->vertex_cache.current, (v - ctr->vertex_cache.current) * sizeof(ctr_vertex_t));
ctrGuSetAttributeBuffers(2,
VIRT_TO_PHYS(ctr->vertex_cache.current),
CTRGU_ATTRIBFMT(GPU_SHORT, 4) << 0 |
CTRGU_ATTRIBFMT(GPU_SHORT, 4) << 4,
sizeof(ctr_vertex_t));
GPU_SetTexEnv(0,
GPU_TEVSOURCES(GPU_TEXTURE0, GPU_CONSTANT, 0),
GPU_TEVSOURCES(GPU_TEXTURE0, GPU_CONSTANT, 0),
0,
GPU_TEVOPERANDS(GPU_TEVOP_RGB_SRC_R, GPU_TEVOP_RGB_SRC_ALPHA, 0),
GPU_MODULATE, GPU_MODULATE,
color);
// printf("%s\n", msg);
// DEBUG_VAR(color);
// GPU_SetTexEnv(0, GPU_TEXTURE0, GPU_TEXTURE0, 0, GPU_TEVOPERANDS(GPU_TEVOP_RGB_SRC_R, 0, 0), GPU_REPLACE, GPU_REPLACE, 0);
ctrGuSetTexture(GPU_TEXUNIT0, VIRT_TO_PHYS(font->texture.data), font->texture.width, font->texture.height,
GPU_TEXTURE_MAG_FILTER(GPU_NEAREST) | GPU_TEXTURE_MIN_FILTER(GPU_NEAREST) |
GPU_TEXTURE_WRAP_S(GPU_CLAMP_TO_EDGE) | GPU_TEXTURE_WRAP_T(GPU_CLAMP_TO_EDGE),
GPU_L8);
GPU_SetViewport(NULL,
VIRT_TO_PHYS(ctr->drawbuffers.top.left),
0, 0, CTR_TOP_FRAMEBUFFER_HEIGHT,
ctr->video_mode == CTR_VIDEO_MODE_800x240 ? CTR_TOP_FRAMEBUFFER_WIDTH * 2 : CTR_TOP_FRAMEBUFFER_WIDTH);
GPU_DrawArray(GPU_GEOMETRY_PRIM, 0, v - ctr->vertex_cache.current);
if (ctr->video_mode == CTR_VIDEO_MODE_3D)
{
GPU_SetViewport(NULL,
VIRT_TO_PHYS(ctr->drawbuffers.top.right),
0, 0, CTR_TOP_FRAMEBUFFER_HEIGHT,
CTR_TOP_FRAMEBUFFER_WIDTH);
GPU_DrawArray(GPU_GEOMETRY_PRIM, 0, v - ctr->vertex_cache.current);
}
// v = font->vertices;
// v->x0 = 0;
// v->y0 = 0;
// v->u0 = 0;
// v->v0 = 0;
// v->x1 = font->texture.width;
// v->y1 = font->texture.height;
// v->u1 = font->texture.width;
// v->v1 = font->texture.height;
// GPU_DrawArray(GPU_GEOMETRY_PRIM, 0, 1);
GPU_SetTexEnv(0, GPU_TEXTURE0, GPU_TEXTURE0, 0, 0, GPU_REPLACE, GPU_REPLACE, 0);
// DEBUG_VAR(v - font->vertices);
// v = font->vertices;
// printf("OSDMSG: %s\n", msg);
// printf("vertex : (%i,%i,%i,%i) - (%i,%i,%i,%i)\n",
// v->x0, v->y0, v->x1, v->y1,
// v->u0, v->v0, v->u1, v->v1);
// printf("%s\n", msg);
ctr->vertex_cache.current = v;
}
static void ctr_font_render_message(
ctr_font_t* font, const char* msg, float scale,
const unsigned int color, float pos_x, float pos_y,
unsigned text_align)
{
int lines = 0;
float line_height;
if (!msg || !*msg)
return;
/* If the font height is not supported just draw as usual */
if (!font->font_driver->get_line_height)
{
ctr_font_render_line(font, msg, strlen(msg),
scale, color, pos_x, pos_y, text_align);
return;
}
line_height = scale / font->font_driver->get_line_height(font->font_data);
for (;;)
{
const char* delim = strchr(msg, '\n');
/* Draw the line */
if (delim)
{
unsigned msg_len = delim - msg;
ctr_font_render_line(font, msg, msg_len,
scale, color, pos_x, pos_y - (float)lines * line_height,
text_align);
msg += msg_len + 1;
lines++;
}
else
{
unsigned msg_len = strlen(msg);
ctr_font_render_line(font, msg, msg_len,
scale, color, pos_x, pos_y - (float)lines * line_height,
text_align);
break;
}
}
}
static void ctr_font_render_msg(void* data, const char* msg,
const void* userdata)
{
float x, y, scale, drop_mod, drop_alpha;
unsigned color, color_dark, r, g, b, alpha, r_dark, g_dark, b_dark, alpha_dark;
unsigned width, height;
int drop_x, drop_y;
unsigned max_glyphs;
enum text_alignment text_align;
settings_t* settings = config_get_ptr();
ctr_font_t* font = (ctr_font_t*)data;
const struct font_params* params = (const struct font_params*)userdata;
if (!font || !msg || !*msg)
return;
video_driver_get_size(&width, &height);
if (params)
{
// printf("%s\n", msg);
x = params->x;
y = params->y;
scale = params->scale;
text_align = params->text_align;
drop_x = params->drop_x;
drop_y = params->drop_y;
drop_mod = params->drop_mod;
drop_alpha = params->drop_alpha;
r = FONT_COLOR_GET_RED(params->color);
g = FONT_COLOR_GET_GREEN(params->color);
b = FONT_COLOR_GET_BLUE(params->color);
alpha = FONT_COLOR_GET_ALPHA(params->color);
color = params->color;
// color = COLOR_ABGR(r, g, b, alpha);
}
else
{
x = settings->video.msg_pos_x;
y = settings->video.msg_pos_y;
scale = 1.0f;
text_align = TEXT_ALIGN_LEFT;
r = (settings->video.msg_color_r * 255);
g = (settings->video.msg_color_g * 255);
b = (settings->video.msg_color_b * 255);
alpha = 255;
color = COLOR_ABGR(r, g, b, alpha);
drop_x = -2;
drop_y = -2;
drop_mod = 0.3f;
drop_alpha = 1.0f;
}
max_glyphs = strlen(msg);
if (drop_x || drop_y)
max_glyphs *= 2;
if (drop_x || drop_y)
{
r_dark = r * drop_mod;
g_dark = g * drop_mod;
b_dark = b * drop_mod;
alpha_dark = alpha * drop_alpha;
color_dark = COLOR_ABGR(r_dark, g_dark, b_dark, alpha_dark);
ctr_font_render_message(font, msg, scale, color_dark,
x + scale * drop_x / width, y +
scale * drop_y / height, text_align);
}
ctr_font_render_message(font, msg, scale,
color, x, y, text_align);
}
static const struct font_glyph* ctr_font_get_glyph(
void* data, uint32_t code)
{
ctr_font_t* font = (ctr_font_t*)data;
if (!font || !font->font_driver)
return NULL;
if (!font->font_driver->ident)
return NULL;
return font->font_driver->get_glyph((void*)font->font_driver, code);
}
static void ctr_font_flush_block(void* data)
{
(void)data;
}
static void ctr_font_bind_block(void* data, void* userdata)
{
(void)data;
}
font_renderer_t ctr_font =
{
ctr_font_init_font,
ctr_font_free_font,
ctr_font_render_msg,
"ctrfont",
ctr_font_get_glyph,
ctr_font_bind_block,
ctr_font_flush_block,
ctr_font_get_message_width,
};
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