evas: font glyphs texture garbage collector

Summary:
Introduce two public APIS
```
#define EVAS_FONT_DATA_CACHE_TEXTURE 0x01

/**
 * Set the limit in bytes for memory allocated by font glyphs in evas.
 * @param[in] bytes cache size in bytes, pass negative value to ignore the limit.
 * @param[in] options for caching, pass 0x1 to set the texture cache (in case of accelerated rendering).
 *
 * @since 1.24
 */
EAPI void                    evas_font_data_cache_set(signed long long int byte, int options);

/**
 * @}
 */

/**
 * Get the limit in bytes for memory allocated by font glyphs in evas.
 * @param[in] options for caching, pass 0x1 to get the texture cache (in case of accelerated rendering).
 * @return Returns font allocated memory cache limit, if value is negative this means no limit.
 * @since 1.24
 */
EAPI signed long long int    evas_font_data_cache_get(int options);
```

Test Plan:
elementary_test => Text Memory
You need a tool to observe Video memory allocation.
1- If you have detected Graphics card then use **radiontop** or  **nvidia-smi** ).
2- If you have Integrated Graphics card, then you can detect memory allocation on RAM use.

----------------------------------------------

this example allows only 50 MByte Video memory texture allocated by font glyphs
```
#include <Elementary.h>

typedef struct _APP
{
  Evas_Object *tb1;
  Evas_Object *btnLoad;
} APP;

char *text = "<align=center><color=#4DE0FFFF underline=on underline_color=#4DE0FFFF><a href='tel:1234567890'>1234567890</a></color>😀😁😂🤣😃😄😅😆😉😊😋😎😍😘😗😙😚☺🙂🤗🤔😐😑😶🙄😏😣😥😮🤐😯😪😫😴😌🤓😛😜😝🤤😒😓😔😕🙃🤑😲☹🙁😖😞😟😤😢😭😦😧😨😩😬😰😱😳😵😡😠😇🤠🤡🤥😷🤒🤕🤢🤧☻😈👿👹👺💀☠👻👽👾🤖💩😺😸😹😻😼😽🙀😿😾🙈🙉🙊👦👧👨👩👵👶👼👨‍⚕️👩‍⚕️👨‍🎓👩‍🎓👨‍🏫👩‍🏫👨‍⚖👩‍⚖👨‍🌾👩‍🌾👨‍🍳👩‍🍳👨‍🔧👩‍🔧👨‍🏭👩‍🏭👨‍💼👩‍💼👨‍🔬👩‍🔬👨‍💻👩‍💻👨‍🎤👩‍🎤👨‍🎨👩‍🎨👨‍✈️👩‍✈️👨‍🚀👩‍🚀👨‍🚒👩‍🚒👮‍♂️👮‍♀️🕵️‍♂️🕵️‍♀️💂‍♂️💂‍♀️👷‍♂️👷‍♀️👳‍♂️👳‍♀️👱‍♂️👱‍♀️🎅🤶👸🤴👰🤵🤰👲🙍‍♂️🙍‍♀️🙎‍♂️🙎‍♀️🙅‍♂️🙅‍♀️🙆‍♂️🙆‍♀️💁‍♂️💁‍♀️🙋‍♂️🙋‍♀️🙇‍♂️🙇‍♀️🤦‍♂️🤦‍♀️🤷‍♂️🤷‍♀️💆‍♂️💆‍♀️💇‍♂️💇‍♀️🚶‍♂️🚶‍♀️🏃‍♂️🏃‍♀️💃🕺👯‍♂️👯‍♀️🕴🗣👤👥👫👬👭💏💑👪👨‍👩‍👧👨‍👩‍👧‍👦👨‍👩‍👦‍👦👨‍👩‍👧‍👧👨‍👦👨‍👦‍👦👨‍👧👨‍👧‍👦👨‍👧‍👧👩‍👦👩‍👦‍👦👩‍👧👩‍👧‍👦👩‍👧‍👧💪🤳👈👉☝️👆🖕👇✌🤞🖖🤘👊🖐✋👌👍👎✊👊🤛🤜🤚👋👏✍👐🙌🙏🤝💅👂👃👣👀👁👅👄💋💘❤💓💔💕💖💗💙💚💛💜🖤💝💞💟❣💌💤💢💣💥💦💨💫💬🗨🗯💭🕳👓🕶👔👕👖👗👘👙👚👛👜👝🛍🎒👞👟👠👡👢👑👒🎩🎓⛑📿💄💍💎🐵🐒🦍🐶🐕🐩🐺🦊🐱🐈🦁🐯🐅🐆🐴🐎🦌🦄🐮🐂🐃🐄🐷🐖🐗🐽🐏🐑🐐🐪🐫🐘🦏🐭🐁🐀🐹🐰🐇🐿🦇🐻🐨🐼🐾🦃🐔🐓🐣🐤🐥🐦🐧🕊🦅🦆🦉🐸🐊🐢🦎🐍🐲🐉🐳🐋🐬🐟🐠🐡🦈🐙🐚🦀🦐🦑🦋🐌🐛🐜🐝🐞🕷🕸🦂💐🌸💮🏵🌹🥀🌺🌻🌼🌷⚘🌱🌲🌳🌴🌵🌾🌿☘🍀🍁🍂🍃🍇🍈🍉🍊🍋🍌🍍🍎🍏🍐🍑🍒🍓🍅🥝🥑🍆🥔🥕🌽🌶🥒🍄🥜🌰🍞🥐🥖🥞🧀🍖🍗🥓🍔🍟🍕🌭🌮🌯🥙🥚🍳🥘🍲🥗🍿🍱🍘🍙🍚🍛🍜🍝🍠🍢🍣🍤🍥🍡🍦🍧🍨🍩🍪🎂🍰🍫🍬🍭🍮🍯🍼🥛☕🍵🍶🍾🍷🍸🍹🍺🍻🥂🍽🍴🥄🔪🏺🎃🎄🎆🎇✨🎈🎉🎊🎋🎍🎎🎏🎐🎑🎀🎁🎗🎟🎫🎖🏆🏅🥇🥈🥉⚽️⚾️🏀🏐🏈🏉🎾🎱🎳🏏🏑🏒🏓🏸🥊🥋🥅🎯⛳🏌️‍♂️🏌️‍♀️⛸🎣🎽🎿⛷🏂🏄‍♂️🏄‍♀️🏇🏊‍♂️🏊‍♀️⛹️‍♂️⛹️‍♀️🏋️‍♂️🏋️‍♀️🚴‍♂️🚴‍♀️🚵‍♂️🚵‍♀️🏎🏍🤸‍♂️🤸‍♀️🤼‍♂️🤼‍♀️🤽‍♂️🤽‍♀️🤾‍♂️🤾‍♀️🤺🤹‍♂️🤹‍♀️🎮🕹🎲♠️♥️♦️♣️🃏🀄🎴🌍🌎🌏🌐🗺🏔⛰🌋🗻🏕🏖🏜🏝🏞🏟🏛🏗🏘🏙🏚🏠🏡🏢🏣🏤🏥🏦🏨🏩🏪🏫🏬🏭🏯🏰💒🗼🗽⛪🕌🕍⛩🕋⛲⛺🌁🌃🌄🌅🌆🌇🌉⛼♨️🌌🎠🎡🎢💈🎪🎭🖼🎨🎰🚂🚃🚄🚅🚆🚇🚈🚉🚊🚝🚞🚋🚌🚍🚎🚐🚑🚒🚓🚔🚕🚖🚗🚘🚙🚚🚛⛟🚜🚲🛴🛵🚏🛣🛤⛽🚨🚥🚦🚧🛑⚓⛵🚣‍♂️🚣‍♀️🛶🚤🛳⛴🛥🚢✈🛩🛫🛬💺🚁🚟🚠🚡🚀🛰🛎🚪🛌🛏🛋🚽🚿🛀🛁⌛⏳⌚⏰⏱⏲🕰🕛🕧🕐🕜🕑🕝🕒🕞🕓🕟🕔🕠🕕🕡🕖🕢🕗🕣🕘🕤🕙🕥🕚🕦🌑🌒🌓🌔🌕🌖🌗🌘🌙🌚🌛🌜🌡☀️🌝🌞⭐🌟🌠☁️⛅⛈🌤🌥🌦🌧🌨🌩🌪🌫🌬🌀🌈🌂☂️☔⛱⚡❄☃️⛄☄🔥💧🌊🔇🔈🔉🔊📢📣📯🔔🔕🎼🎵🎶🎙🎚🎛🎤🎧📻🎷🎸🎹🎺🎻🥁📱📲☎️📞📟📠🔋🔌💻🖥🖨⌨🖱🖲💽💾💿📀🎥🎞📽🎬📺📷📸📹📼🔍🔎🔬🔭📡🕯💡🔦🏮📔📕📖📗📘📙📚📓📒📃📜📄📰🗞📑🔖🏷💰💴💵💶💷💸💳💱💲✉📧📨📩📤📥📦📫📪📬📭📮🗳✏✒🖋🖊🖌🖍📝💼📁📂🗂📅📆🗒🗓📇📈📉📊📋📌📍📎🖇📏📐✂️🗃🗄🗑🔒🔓🔏🔐🔑🗝🔨⛏⚒🛠🗡⚔🔫🏹🛡🔧🔩⚙🗜⚗⚖🔗⛓💉💊🚬⚰⚱🗿🛢🔮🔮🏧🚮🚰♿🚹🚺🚻🚼🚾🛂🛃🛄🛅⚠️🚸⛔🚫🚳🚭🚯🚱🚷📵🔞☢☣⬆️↗️➡️↘️⬇️↙️⬅️↖️↕️↔️↩↪⤴️⤵️🔃🔄🔙🔚🔛🔜🔝🛐⚛🕉✡☸☯️☦☮🕎🔯♈♉♊♋♌♍♎♏♐♑♒♓⛎🔀🔁🔂▶️⏩⏭⏯◀️⏪⏮🔼⏫🔽⏬⏸⏹⏺⏏🎦🔅🔆📶📳📴♻️📛⚜🔰🔱⭕✅☑✔✖❌❎➕♀️♂️⚕➖➗➰➿〽✳✴❇⁉️❓❔❕❗〰🔟💯🔠🔡🔢🔣🔤🅰️🆎️🅱️🆑️🆒️🆓️ℹ🆔️Ⓜ️🆕️🆖️🅾️🆗️🅿️🆘️🆙️🆚️🈁🈂🈷🈶🈯🉐🈹🈚🈲🉑🈸🈴🈳㊗㊙🈺🈵▫️◻◼◽◾⬛⬜🔶️🔷️🔸️🔹️🔺️🔻💠🔘🔲🔳⚪⚫🔴🔵🏁🚩🏴🏳🏳️‍🌈⚀⚁⚂⚃⚄⚅⛾♾🇦🇨🇦🇩🇦🇪🇦🇫🇦🇬🇦🇮🇦🇱🇦🇲🇦🇴🇦🇶🇦🇷🇦🇸🇦🇹🇦🇺🇦🇼🇦🇽🇦🇿🇧🇦🇧🇧🇧🇩🇧🇪🇧🇫🇧🇬🇧🇭🇧🇮🇧🇯🇧🇱🇧🇲🇧🇳🇧🇴🇧🇶🇧🇷🇧🇸🇧🇹🇧🇼🇧🇾🇧🇿🇨🇦🇨🇨🇨🇩🇨🇫🇨🇬🇨🇭🇨🇮🇨🇰🇨🇱🇨🇲🇨🇳🇨🇴🇨🇷🇨🇺🇨🇻🇨🇼🇨🇽🇨🇾🇨🇿🇩🇪🇩🇯🇩🇰🇩🇲🇩🇴🇩🇿🇪🇨🇪🇪🇪🇬🇪🇭🇪🇷🇪🇸🇪🇹🇪🇺🇫🇮🇫🇯🇫🇰🇫🇲🇫🇴🇫🇷🇬🇦🇬🇧🇬🇩🇬🇪🇬🇫🇬🇬🇬🇭🇬🇮🇬🇱🇬🇲🇬🇳🇬🇵🇬🇶🇬🇷🇬🇸🇬🇹🇬🇺🇬🇼🇬🇾🇭🇰🇭🇲🇭🇳🇭🇷🇭🇹🇭🇺🇮🇨🇮🇩🇮🇪🇮🇱🇮🇲🇮🇳🇮🇴🇮🇶🇮🇷🇮🇸🇮🇹🇯🇪🇯🇲🇯🇴🇯🇵🇰🇪🇰🇬🇰🇭🇰🇮🇰🇲🇰🇳🇰🇵🇰🇷🇰🇼🇰🇾🇰🇿🇱🇦🇱🇧🇱🇨🇱🇮🇱🇰🇱🇷🇱🇸🇱🇹🇱🇺🇱🇻🇱🇾🇲🇦🇲🇨🇲🇩🇲🇪🇲🇬🇲🇭🇲🇰🇲🇱🇲🇲🇲🇳🇲🇴🇲🇵🇲🇶🇲🇷🇲🇸🇲🇹🇲🇺🇲🇻🇲🇼🇲🇽🇲🇾🇲🇿🇳🇦🇳🇨🇳🇪🇳🇫🇳🇬🇳🇮🇳🇱🇳🇴🇳🇵🇳🇷🇳🇺🇳🇿🇴🇲🇵🇦🇵🇪🇵🇫🇵🇬🇵🇭🇵🇰🇵🇱🇵🇲🇵🇳🇵🇷🇵🇸🇵🇹🇵🇼🇵🇾🇶🇦🇷🇪🇷🇴🇷🇸🇷🇺🇷🇼🇸🇦🇸🇧🇸🇨🇸🇩🇸🇪🇸🇬🇸🇭🇸🇮🇸🇰🇸🇱🇸🇲🇸🇳🇸🇴🇸🇷🇸🇸🇸🇹🇸🇻🇸🇽🇸🇾🇸🇿🇹🇦🇹🇨🇹🇩🇹🇫🇹🇬🇹🇭🇹🇯🇹🇰🇹🇱🇹🇲🇹🇳🇹🇴🇹🇷🇹🇹🇹🇻🇹🇼🇹🇿🇺🇦🇺🇬🇺🇳🇺🇸🇺🇾🇺🇿🇻🇦🇻🇨🇻🇪🇻🇬🇻🇮🇻🇳🇻🇺🇼🇫🇼🇸🇽🇰🇾🇪🇾🇹🇿🇦🇿🇲🇿🇼8<br/><br/><br/><br/>Sent from my Samsung Galaxy smartphone.</align>";
int font_size = 200;

int counter = 0;
void _button_clicked(void *data, Evas_Object *obj, void *event_info)
{
   APP *app = data;

  font_size -= 5;
  Evas_Textblock_Style *style = evas_textblock_style_new();
  char buffer[100] = {0};
  sprintf(buffer, "DEFAULT='font=NotoColorEmoji font_size=%i color=red ellipsis=-1.0 wrap=mixed'", font_size);
  evas_textblock_style_set(style, buffer);
  evas_object_textblock_style_set(app->tb1, style);
  evas_textblock_style_free(style);
  style = NULL;
}

EAPI_MAIN int
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
  APP *app = calloc(1, sizeof(APP));
  Evas_Object *win, *scroller1, *scroller2, *box;

  elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);

  win = elm_win_util_standard_add("", "");
  elm_win_autodel_set(win, EINA_TRUE);

  box = elm_box_add(win);
  evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  evas_object_size_hint_align_set(box, EVAS_HINT_FILL, EVAS_HINT_FILL);
  scroller1 = elm_scroller_add(win);
  evas_object_size_hint_weight_set(scroller1, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  evas_object_size_hint_align_set(scroller1, EVAS_HINT_FILL, EVAS_HINT_FILL);

  evas_font_data_cache_set(50 * 1024* 1024, EVAS_FONT_DATA_CACHE_TEXTURE );

  app->tb1 = evas_object_textblock_add(win);
  Evas_Textblock_Style *style = evas_textblock_style_new();
  char buffer[100] = {0};
  sprintf(buffer, "DEFAULT='font=NotoColorEmoji font_size=%i color=red ellipsis=-1.0 wrap=mixed'", font_size);
  evas_textblock_style_set(style, buffer);
  evas_object_textblock_style_set(app->tb1, style);
  evas_textblock_style_free(style);
  style = NULL;

  evas_font_cache_set(evas_object_evas_get(app->tb1), 0);

  int w,h;
  evas_object_textblock_text_markup_set(app->tb1, "");
  evas_object_size_hint_min_set(app->tb1, 400, 400);
  elm_object_content_set(scroller1, app->tb1);
  elm_box_pack_end(box, scroller1);
  elm_object_content_set(win, box);

  app->btnLoad = elm_button_add(win);
  elm_object_text_set(app->btnLoad, "Scale Font");
  evas_object_smart_callback_add(app->btnLoad, "clicked", _button_clicked, app);
  evas_object_show(app->btnLoad);
  evas_object_move(app->btnLoad, 0, 20);
  evas_object_resize(app->btnLoad, 150, 20);

  evas_object_textblock_text_markup_set(app->tb1, text);
  evas_object_textblock_size_formatted_get(app->tb1, &w, &h);
  evas_object_size_hint_min_set(app->tb1, 400, w/400 + h + 150);

  evas_object_resize(win, 400, 400);
  evas_object_show(box);
  evas_object_show(scroller1);
  evas_object_show(scroller2);
  evas_object_show(win);
  elm_run();

  return 0;
}
ELM_MAIN()

```

Reviewers: raster, woohyun, zmike, cedric, bu5hm4n, Hermet

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T8737

Differential Revision: https://phab.enlightenment.org/D11943

5 files changed, 77 insertions, 1 deletions

diff --git a/src/modules/evas/engines/gl_common/evas_gl_common.h b/src/modules/evas/engines/gl_common/evas_gl_common.h
index 5873b93fb6..c7b4d22150 100644
--- a/src/modules/evas/engines/gl_common/evas_gl_common.h
+++ b/src/modules/evas/engines/gl_common/evas_gl_common.h
@@ -368,6 +368,9 @@ struct _Evas_Engine_GL_Context
    Eina_List     *font_glyph_images;
    Evas_GL_Image *def_surface;
    RGBA_Image    *font_surface;
+   int            font_glyph_textures_size;
+   int            font_glyph_atlas_size;
+   Eina_Bool      font_glyph_gc_requested    :1;
 
 #ifdef GL_GLES
    // FIXME: hack. expose egl display to gl core for egl image sec extn.
diff --git a/src/modules/evas/engines/gl_common/evas_gl_font.c b/src/modules/evas/engines/gl_common/evas_gl_font.c
index 53260d971d..4a5f428487 100644
--- a/src/modules/evas/engines/gl_common/evas_gl_font.c
+++ b/src/modules/evas/engines/gl_common/evas_gl_font.c
@@ -218,13 +218,37 @@ void
 evas_gl_font_image_draw(void *gc, void *gl_image, int dx, int dy, int dw, int dh, int smooth)
 {
    Evas_GL_Image *im = (Evas_GL_Image *)gl_image;
+   Evas_Engine_GL_Context *gl_context = gc;
+   Eina_Bool is_cached = EINA_FALSE;
+   Eina_Bool is_new_atlas = EINA_FALSE;
 
    if (!im || !im->fglyph) return;
 
-   evas_gl_common_image_draw((Evas_Engine_GL_Context *)gc,
+   is_cached = (im->tex != NULL) && (im->tex->pt != NULL);
+
+   evas_gl_common_image_draw(gl_context,
                              im, 0, 0,
                              (unsigned int)im->fglyph->glyph_out->bitmap.width,
                              (unsigned int)im->fglyph->glyph_out->bitmap.rows,
                              dx, dy, dw, dh,
                              smooth);
+
+   // Move latest used glyph image to the back, because GC will start freeing from the beginning
+   gl_context->font_glyph_images = eina_list_remove(gl_context->font_glyph_images, im);
+   gl_context->font_glyph_images = eina_list_append(gl_context->font_glyph_images, im);
+
+   if (!is_cached)
+     {
+        gl_context->font_glyph_textures_size += im->w * im->h * 4;
+     }
+
+   is_new_atlas = (!is_cached) && (im->tex != NULL) && (im->tex->pt) && (im->tex->pt->references == 1);
+   if (is_new_atlas)
+     {
+        int size = (im->tex->pt->w * im->tex->pt->h * 4);
+        gl_context->font_glyph_atlas_size += size;
+        if ((evas_font_data_cache_get(EVAS_FONT_DATA_CACHE_TEXTURE) >= 0) &&
+            (evas_font_data_cache_get(EVAS_FONT_DATA_CACHE_TEXTURE) * 0.95 < gl_context->font_glyph_atlas_size))
+          gl_context->font_glyph_gc_requested = EINA_TRUE;
+     }
 }
diff --git a/src/modules/evas/engines/gl_common/evas_gl_texture.c b/src/modules/evas/engines/gl_common/evas_gl_texture.c
index 1aa9d3ccb0..47dd8305a8 100644
--- a/src/modules/evas/engines/gl_common/evas_gl_texture.c
+++ b/src/modules/evas/engines/gl_common/evas_gl_texture.c
@@ -1565,6 +1565,7 @@ evas_gl_common_texture_free(Evas_GL_Texture *tex, Eina_Bool force)
    if (tex->references != 0) return;
    if (tex->fglyph)
      {
+        tex->gc->font_glyph_textures_size -= tex->w * tex->h * 4;
         tex->gc->font_glyph_textures = eina_list_remove(tex->gc->font_glyph_textures, tex);
         tex->fglyph->ext_dat = NULL;
         tex->fglyph->ext_dat_free = NULL;
@@ -1575,6 +1576,10 @@ evas_gl_common_texture_free(Evas_GL_Texture *tex, Eina_Bool force)
         tex->pt->allocations = eina_list_remove(tex->pt->allocations, tex->apt);
         if (tex->apt) eina_rectangle_pool_release(tex->apt);
         tex->apt = NULL;
+        if (tex->fglyph && (tex->pt->references == 1))
+          {
+            tex->gc->font_glyph_atlas_size -= tex->pt->w * tex->pt->h * 4;
+          }
         pt_unref(tex->pt);
         tex->pt = NULL;
      }
diff --git a/src/modules/evas/engines/gl_generic/evas_engine.c b/src/modules/evas/engines/gl_generic/evas_engine.c
index 0fc241643d..a051f00242 100644
--- a/src/modules/evas/engines/gl_generic/evas_engine.c
+++ b/src/modules/evas/engines/gl_generic/evas_engine.c
@@ -3023,6 +3023,42 @@ eng_gfx_filter_process(void *engine, Evas_Filter_Command *cmd)
      return pfunc.gfx_filter_process(&re->software, cmd);
 }
 
+static void
+eng_font_glyphs_gc_collect(void *data EINA_UNUSED, float ratio EINA_UNUSED, int *texture_size EINA_UNUSED, int *atlas_size EINA_UNUSED, Eina_Bool only_when_requested EINA_UNUSED)
+{
+   Evas_Engine_GL_Context *gl_context;
+   gl_context = gl_generic_context_find(data, 1);
+
+   if ((only_when_requested && gl_context->font_glyph_gc_requested) || (!only_when_requested))
+     {
+        if (ratio > 0.0)
+          {
+             int requested_size = ratio * gl_context->font_glyph_textures_size;
+
+             Eina_List *l;
+             Eina_List *ll;
+             Evas_GL_Image *im;
+             EINA_LIST_FOREACH_SAFE(gl_context->font_glyph_images, l, ll, im)
+               {
+                  int size = im->w * im->h * 4;
+                  gl_context->font_glyph_textures_size -= size;
+                  requested_size -= size;
+                  if ((im->tex != NULL) && (im->tex->pt) && (im->tex->pt->references == 1))
+                    {
+                       gl_context->font_glyph_atlas_size -= im->tex->pt->w * im->tex->pt->h * 4;
+                    }
+                  evas_gl_common_image_free(im);
+                  if (requested_size <= 0)
+                    break;
+               }
+          }
+
+         gl_context->font_glyph_gc_requested = EINA_FALSE;
+     }
+   if (texture_size) *texture_size = gl_context->font_glyph_textures_size;
+   if (atlas_size) *atlas_size = gl_context->font_glyph_atlas_size;
+}
+
 //------------------------------------------------//
 
 static int
@@ -3178,6 +3214,7 @@ module_open(Evas_Module *em)
    ORD(ector_surface_cache_drop);
    ORD(gfx_filter_supports);
    ORD(gfx_filter_process);
+   ORD(font_glyphs_gc_collect);
 
    /* now advertise out own api */
    em->functions = (void *)(&func);
diff --git a/src/modules/evas/engines/software_generic/evas_engine.c b/src/modules/evas/engines/software_generic/evas_engine.c
index a942a96f02..aca24c4936 100644
--- a/src/modules/evas/engines/software_generic/evas_engine.c
+++ b/src/modules/evas/engines/software_generic/evas_engine.c
@@ -4645,6 +4645,12 @@ eng_gfx_filter_supports(void *data EINA_UNUSED, Evas_Filter_Command *cmd)
    return EVAS_FILTER_SUPPORT_CPU;
 }
 
+static void
+eng_font_glyphs_gc_collect(void *data EINA_UNUSED, float ratio EINA_UNUSED, int *texture_size EINA_UNUSED, int *atlas_size EINA_UNUSED, Eina_Bool only_when_requested EINA_UNUSED)
+{
+   return;
+}
+
 static Eina_Bool
 eng_gfx_filter_process(void *data EINA_UNUSED, Evas_Filter_Command *cmd)
 {
@@ -4851,6 +4857,7 @@ static Evas_Func func =
      eng_gfx_filter_supports,
      eng_gfx_filter_process,
    /* FUTURE software generic calls go here */
+     eng_font_glyphs_gc_collect,
      0 // sizeof (Info)
 };