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RetroArch/gfx/drivers_font/d3d12_font.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2014-2018 - Ali Bouhlel
*
* 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/>.
*/
#define CINTERFACE
#include <string.h>
#include <malloc.h>
#include <math.h>
#include <encodings/utf.h>
#include "../font_driver.h"
#include "../common/d3d12_common.h"
#include "../../configuration.h"
typedef struct
{
d3d12_texture_t texture;
const font_renderer_driver_t* font_driver;
void* font_data;
struct font_atlas* atlas;
} d3d12_font_t;
static void * d3d12_font_init(void* data, const char* font_path,
float font_size, bool is_threaded)
{
d3d12_video_t* d3d12 = (d3d12_video_t*)data;
d3d12_font_t* font = (d3d12_font_t*)calloc(1, sizeof(*font));
if (!font)
return NULL;
if (!font_renderer_create_default(
&font->font_driver,
&font->font_data, font_path, font_size))
{
free(font);
return NULL;
}
font->atlas = font->font_driver->get_atlas(font->font_data);
font->texture.sampler = d3d12->samplers[RARCH_FILTER_LINEAR][RARCH_WRAP_BORDER];
font->texture.desc.Width = font->atlas->width;
font->texture.desc.Height = font->atlas->height;
font->texture.desc.Format = DXGI_FORMAT_A8_UNORM;
font->texture.srv_heap = &d3d12->desc.srv_heap;
d3d12_release_texture(&font->texture);
d3d12_init_texture(d3d12->device, &font->texture);
d3d12_update_texture(
font->atlas->width, font->atlas->height,
font->atlas->width, DXGI_FORMAT_A8_UNORM,
font->atlas->buffer, &font->texture);
font->atlas->dirty = false;
return font;
}
static void d3d12_font_free(void* data, bool is_threaded)
{
d3d12_font_t* font = (d3d12_font_t*)data;
if (!font)
return;
if (font->font_driver && font->font_data && font->font_driver->free)
font->font_driver->free(font->font_data);
d3d12_release_texture(&font->texture);
free(font);
}
static int d3d12_font_get_message_width(void* data,
const char* msg, size_t msg_len, float scale)
{
int i, delta_x = 0;
const struct font_glyph* glyph_q = NULL;
d3d12_font_t* font = (d3d12_font_t*)data;
if (!font)
return 0;
glyph_q = font->font_driver->get_glyph(font->font_data, '?');
for (i = 0; i < msg_len; i++)
{
const struct font_glyph* glyph;
const char *msg_tmp = &msg[i];
unsigned code = utf8_walk(&msg_tmp);
unsigned skip = msg_tmp - &msg[i];
if (skip > 1)
i += skip - 1;
/* Do something smarter here ... */
if (!(glyph = font->font_driver->get_glyph(font->font_data, code)))
if (!(glyph = glyph_q))
continue;
delta_x += glyph->advance_x;
}
return delta_x * scale;
}
static void d3d12_font_render_line(
d3d12_video_t *d3d12,
d3d12_font_t* font,
const char* msg,
size_t msg_len,
float scale,
const unsigned int color,
float pos_x,
float pos_y,
unsigned width,
unsigned height,
unsigned text_align)
{
int i;
D3D12_RANGE range;
unsigned count;
const struct font_glyph* glyph_q = NULL;
void* mapped_vbo = NULL;
d3d12_sprite_t* v = NULL;
d3d12_sprite_t* vbo_start = NULL;
int x = roundf(pos_x * width);
int y = roundf((1.0 - pos_y) * height);
if (d3d12->sprites.offset + msg_len > (unsigned)d3d12->sprites.capacity)
d3d12->sprites.offset = 0;
switch (text_align)
{
case TEXT_ALIGN_RIGHT:
x -= d3d12_font_get_message_width(font, msg, msg_len, scale);
break;
case TEXT_ALIGN_CENTER:
x -= d3d12_font_get_message_width(font, msg, msg_len, scale) / 2;
break;
}
range.Begin = 0;
range.End = 0;
D3D12Map(d3d12->sprites.vbo, 0, &range, (void**)&vbo_start);
v = vbo_start + d3d12->sprites.offset;
range.Begin = (uintptr_t)v - (uintptr_t)vbo_start;
glyph_q = font->font_driver->get_glyph(font->font_data, '?');
for (i = 0; i < msg_len; i++)
{
const struct font_glyph* glyph;
const char *msg_tmp= &msg[i];
unsigned code = utf8_walk(&msg_tmp);
unsigned skip = msg_tmp - &msg[i];
if (skip > 1)
i += skip - 1;
/* Do something smarter here ... */
if (!(glyph = font->font_driver->get_glyph(font->font_data, code)))
if (!(glyph = glyph_q))
continue;
v->pos.x = (x + (glyph->draw_offset_x * scale)) / (float)d3d12->chain.viewport.Width;
v->pos.y = (y + (glyph->draw_offset_y * scale)) / (float)d3d12->chain.viewport.Height;
v->pos.w = glyph->width * scale / (float)d3d12->chain.viewport.Width;
v->pos.h = glyph->height * scale / (float)d3d12->chain.viewport.Height;
v->coords.u = glyph->atlas_offset_x / (float)font->texture.desc.Width;
v->coords.v = glyph->atlas_offset_y / (float)font->texture.desc.Height;
v->coords.w = glyph->width / (float)font->texture.desc.Width;
v->coords.h = glyph->height / (float)font->texture.desc.Height;
v->params.scaling = 1;
v->params.rotation = 0;
v->colors[0] = color;
v->colors[1] = color;
v->colors[2] = color;
v->colors[3] = color;
v++;
x += glyph->advance_x * scale;
y += glyph->advance_y * scale;
}
range.End = (uintptr_t)v - (uintptr_t)vbo_start;
D3D12Unmap(d3d12->sprites.vbo, 0, &range);
count = v - vbo_start - d3d12->sprites.offset;
if (!count)
return;
if (font->atlas->dirty)
{
d3d12_update_texture(
font->atlas->width, font->atlas->height,
font->atlas->width, DXGI_FORMAT_A8_UNORM,
font->atlas->buffer, &font->texture);
font->atlas->dirty = false;
}
if (font->texture.dirty)
d3d12_upload_texture(d3d12->queue.cmd, &font->texture,
d3d12);
D3D12SetPipelineState(d3d12->queue.cmd, d3d12->sprites.pipe_font);
D3D12SetGraphicsRootDescriptorTable(d3d12->queue.cmd,
ROOT_ID_TEXTURE_T, font->texture.gpu_descriptor[0]);
D3D12SetGraphicsRootDescriptorTable(d3d12->queue.cmd,
ROOT_ID_SAMPLER_T, font->texture.sampler);
D3D12DrawInstanced(d3d12->queue.cmd, count, 1, d3d12->sprites.offset, 0);
D3D12SetPipelineState(d3d12->queue.cmd, d3d12->sprites.pipe);
d3d12->sprites.offset += count;
}
static void d3d12_font_render_message(
d3d12_video_t *d3d12,
d3d12_font_t* font,
const char* msg,
float scale,
const unsigned int color,
float pos_x,
float pos_y,
unsigned width,
unsigned height,
unsigned text_align)
{
struct font_line_metrics *line_metrics = NULL;
int lines = 0;
float line_height;
if (!msg || !*msg)
return;
if (!d3d12 || (!(d3d12->flags & D3D12_ST_FLAG_SPRITES_ENABLE)))
return;
/* If font line metrics are not supported just draw as usual */
if (!font->font_driver->get_line_metrics ||
!font->font_driver->get_line_metrics(font->font_data, &line_metrics))
{
size_t msg_len = strlen(msg);
if (msg_len <= d3d12->sprites.capacity)
d3d12_font_render_line(d3d12,
font, msg, msg_len,
scale, color, pos_x, pos_y, width, height, text_align);
return;
}
line_height = line_metrics->height * scale / height;
for (;;)
{
const char* delim = strchr(msg, '\n');
size_t msg_len = delim ?
(delim - msg) : strlen(msg);
/* Draw the line */
if (msg_len <= d3d12->sprites.capacity)
d3d12_font_render_line(d3d12,
font, msg, msg_len, scale, color, pos_x,
pos_y - (float)lines * line_height, width, height, text_align);
if (!delim)
break;
msg += msg_len + 1;
lines++;
}
}
static void d3d12_font_render_msg(
void *userdata,
void* data,
const char* msg,
const struct font_params *params)
{
float x, y, scale, drop_mod, drop_alpha;
int drop_x, drop_y;
enum text_alignment text_align;
unsigned color, r, g, b, alpha;
d3d12_video_t *d3d12 = (d3d12_video_t*)userdata;
d3d12_font_t* font = (d3d12_font_t*)data;
unsigned width = d3d12->vp.full_width;
unsigned height = d3d12->vp.full_height;
if (!font || !msg || !*msg)
return;
if (params)
{
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 = DXGI_COLOR_RGBA(r, g, b, alpha);
}
else
{
settings_t *settings = config_get_ptr();
float video_msg_pos_x = settings->floats.video_msg_pos_x;
float video_msg_pos_y = settings->floats.video_msg_pos_y;
float video_msg_color_r = settings->floats.video_msg_color_r;
float video_msg_color_g = settings->floats.video_msg_color_g;
float video_msg_color_b = settings->floats.video_msg_color_b;
x = video_msg_pos_x;
y = video_msg_pos_y;
scale = 1.0f;
text_align = TEXT_ALIGN_LEFT;
r = (video_msg_color_r * 255);
g = (video_msg_color_g * 255);
b = (video_msg_color_b * 255);
alpha = 255;
color = DXGI_COLOR_RGBA(r, g, b, alpha);
drop_x = -2;
drop_y = -2;
drop_mod = 0.3f;
drop_alpha = 1.0f;
}
if (drop_x || drop_y)
{
unsigned r_dark = r * drop_mod;
unsigned g_dark = g * drop_mod;
unsigned b_dark = b * drop_mod;
unsigned alpha_dark = alpha * drop_alpha;
unsigned color_dark = DXGI_COLOR_RGBA(r_dark, g_dark, b_dark, alpha_dark);
d3d12_font_render_message(d3d12,
font, msg, scale, color_dark,
x + scale * drop_x / width,
y + scale * drop_y / height,
width, height, text_align);
}
d3d12_font_render_message(d3d12, font,
msg, scale, color, x, y,
width, height, text_align);
}
static const struct font_glyph* d3d12_font_get_glyph(
void* data, uint32_t code)
{
d3d12_font_t* font = (d3d12_font_t*)data;
if (font && font->font_driver && font->font_driver->ident)
return font->font_driver->get_glyph((void*)font->font_driver, code);
return NULL;
}
static bool d3d12_font_get_line_metrics(void* data, struct font_line_metrics **metrics)
{
d3d12_font_t* font = (d3d12_font_t*)data;
if (font && font->font_driver && font->font_data)
return font->font_driver->get_line_metrics(font->font_data, metrics);
return false;
}
font_renderer_t d3d12_font = {
d3d12_font_init,
d3d12_font_free,
d3d12_font_render_msg,
"d3d12_font",
d3d12_font_get_glyph,
NULL, /* bind_block */
NULL, /* flush */
d3d12_font_get_message_width,
d3d12_font_get_line_metrics
};
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