mirror of
https://github.com/obsproject/obs-studio.git
synced 2024-07-07 03:53:38 +00:00
cfb10ece79
We used to swap in a buffer with (0,0,0,1) for all vertex colors for drop shadows and outlines. However, this vertex buffer couldn't be uploaded separately from the vertex data in OBS, so we were reuploading the text vertices every frame. Instead, let's use a uniform for this uniform data and save 500us (or more when handles are visible), a significant portion of my test scenes render time.
105 lines
3 KiB
C
105 lines
3 KiB
C
/******************************************************************************
|
|
Copyright (C) 2014 by Nibbles
|
|
|
|
This program 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 Foundation, either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
******************************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include <obs-module.h>
|
|
#include <ft2build.h>
|
|
|
|
#define num_cache_slots 65535
|
|
#define src_glyph srcdata->cacheglyphs[glyph_index]
|
|
|
|
struct glyph_info {
|
|
float u, v, u2, v2;
|
|
int32_t w, h, xoff, yoff;
|
|
FT_Pos xadv;
|
|
};
|
|
|
|
struct ft2_source {
|
|
char *font_name;
|
|
char *font_style;
|
|
uint16_t font_size;
|
|
uint32_t font_flags;
|
|
|
|
bool file_load_failed;
|
|
bool from_file;
|
|
bool antialiasing;
|
|
char *text_file;
|
|
wchar_t *text;
|
|
time_t m_timestamp;
|
|
bool update_file;
|
|
uint64_t last_checked;
|
|
|
|
uint32_t cx, cy, max_h, custom_width;
|
|
uint32_t outline_width;
|
|
uint32_t texbuf_x, texbuf_y;
|
|
uint32_t color[2];
|
|
|
|
int32_t cur_scroll, scroll_speed;
|
|
|
|
gs_texture_t *tex;
|
|
|
|
struct glyph_info *cacheglyphs[num_cache_slots];
|
|
|
|
FT_Face font_face;
|
|
|
|
uint8_t *texbuf;
|
|
gs_vertbuffer_t *vbuf;
|
|
|
|
gs_effect_t *draw_effect;
|
|
bool outline_text, drop_shadow;
|
|
bool log_mode, word_wrap;
|
|
uint32_t log_lines;
|
|
|
|
obs_source_t *src;
|
|
};
|
|
|
|
extern FT_Library ft2_lib;
|
|
|
|
static void *ft2_source_create(obs_data_t *settings, obs_source_t *source);
|
|
static void ft2_source_destroy(void *data);
|
|
static void ft2_source_update(void *data, obs_data_t *settings);
|
|
static void ft2_source_render(void *data, gs_effect_t *effect);
|
|
static void ft2_video_tick(void *data, float seconds);
|
|
|
|
void draw_outlines(struct ft2_source *srcdata);
|
|
void draw_drop_shadow(struct ft2_source *srcdata);
|
|
|
|
static uint32_t ft2_source_get_width(void *data);
|
|
static uint32_t ft2_source_get_height(void *data);
|
|
|
|
static void ft2_source_defaults_v1(obs_data_t *settings);
|
|
static void ft2_source_defaults_v2(obs_data_t *settings);
|
|
|
|
static obs_properties_t *ft2_source_properties(void *unused);
|
|
|
|
static const char *ft2_source_get_name(void *unused);
|
|
|
|
static obs_missing_files_t *ft2_missing_files(void *data);
|
|
|
|
uint32_t get_ft2_text_width(wchar_t *text, struct ft2_source *srcdata);
|
|
|
|
time_t get_modified_timestamp(char *filename);
|
|
void load_text_from_file(struct ft2_source *srcdata, const char *filename);
|
|
void read_from_end(struct ft2_source *srcdata, const char *filename);
|
|
|
|
void cache_standard_glyphs(struct ft2_source *srcdata);
|
|
void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs);
|
|
|
|
void set_up_vertex_buffer(struct ft2_source *srcdata);
|
|
void fill_vertex_buffer(struct ft2_source *srcdata);
|