ren_font_group_get_width() is getting called a lot while not 100% of the
glyphs loaded from this function will be actually rendered. We can defer
the bitmap rendering to ren_draw_text.
(cherry picked from commit 1659f63dfc6fec7893673e7e95bbcd844ec0bda4)
* renderer: rewrite glyph cache
This commit splits the current GlyphSet-based system into 2 caches,
CharMap and GlyphMap, which maps codepoints -> glyph IDs and glyph IDs -> glyphs respectively.
Each GlyphMap contains a number of GlyphAtlas mapped by their width,
and each GlyphAtlas has a list of surfaces with the same width.
Surfaces within the GlyphAtlas acts like a bump allocator, but is flexible
enough to allow older GlyphAtlas surfaces to be recycled.
GlyphMetric now contains atlas_idx and surface_idx, which points to the correct surface.
Since GlyphAtlas supports rudimentary packing & allocation, we no longer render whole
GlyphSets and this speeds up rendering in most cases.
Tab width is no longer set with the hacky "modify the GlyphMetric" hack.
* renderer: set natlas to 0 after freeing
* renderer: fix printf warning
* renderer: fix memory leak
* renderer: better whitespace rendering
* renderer: fix ubsan warning when casting ints
* renderer: fix tab handling
There's a bug with inconsistent tab widths caused by fontgroups.
* renderer: fix glyphs being loaded over and over
* renderer: add glyphmap size
* renderer: store per-surface offset_y and use it to find best-fitting surface
* renderer: fix MSVC compiler error
* renderer: remove return value from ren_font_glyph
* renderer: refactor xadvance calculation
* renderer: fix double free SDL_RWops if FT_Set_Pixel_Size fail
* renderer: always try .notdef before U+25A1
* renderer: disable ren_font_dump yet again
Accidentally commited this change.
* renderer: remove unused imports
* renderer: fix double free with FT_Open_Face
* renderer: return SDL_Surface in font_find_glyph_surface
* renderer: bring back metric flags for future extension
* renderer: refactor xadvance calculation into macro
* renderer: fix comment
* renderer: store GlyphMetric directly in the surface
* renderer: remove duplicated comment
* renderer: rename font_find_glyph_surface to font_allocate_glyph_surface
* renderer: refactor glyphmetric retrieval into an inline function
* renderer: do not render glyphs with bitmap set to null
This is a weird edge case, but at least it shouldn't crash
* renderer: refactor face metric code into its own function
* renderer: actually check if glyph fits in surface
* renderer: rudimentary support for non-scalable faces
At least it won't render nothing on the screen
* renderer: check for font_surface instead of metric directly
This is safe and shorter
* renderer: fix indentation
* renderer: rename GLYPH_PER_ATLAS to GLYPHS_PER_ATLAS
* renderer: rename all GLYPH_PER_ATLAS correctly
* renderer: make utf8_to_codepoint slightly more durable
* renderer: fix compiler unsigned cast warning
* Update font scale on monitor scale change for `RENDERER` backend (macOS)
* fix(renderer): check every font of a fontgroup for scale changes in `update_font_scale`
It is needed because fonts can be reused between groups and outside of them.
So if the first font of a group has already been scaled, we still need to check if the others still needs to be scaled.
* feat(src/renderer): stream fonts with SDL_RWops on all platforms
This fixes#1529 where the font itself carries the font file, which gets copied around.
This commit streams the file, so the file is not entirely in memory.
* style(src/renderer): use standard C types
* refactor(src/renderer): implement FT_Stream.close
* fix(src/renderer): fix SDL_RWops double free
* add missing windows header
* hold the handle until GC so that the file can't be modified in use,
this is a regression when we switched to CreateFile.
* set wpath to NULL to avoid double free
* Added a smoothing option to font loading.
* Added a font strikethrough option to font loading.
* Fixed underline applying incorrectly in cases of non-underlined fallback fonts being used.
Co-authored-by: Guldoman <giulio.lettieri@gmail.com>
* Allow passing font options to renderer.font:copy().
* Added renderer.font:get_path()
* Reintroduced set_size() for more faster font size changes
* Swapped copy wiht set_size on scale plugin for better performance
* Use code_font:copy() instead of renderer.font.load() on language_md to
properly match user font now that font options are supported on copy.
* Added new changes to renderer docs
We color a 1x1 `SDL_Surface` with the desired color. This surface is
then stretched over the area we need to cover using `SDL_BlitScaled`.
This way we avoid having to do the blending ourselves.
* Update meson.build
- add logic to loop over more lua names (in the future more names might be discovered)
- disable warnings and errors on dependencies
* adding missing includes and checks, correct data types, pointer mess […]
- various functions from string.h were used but never defined
- logic was done across multiple different data types with different signedness, got all of them up to snuff
- give 0 sized array size of 1 (array of size 0 is illegal, but rewriting the code is out of the scope of this commit)
- add preprocessor that marks possibly unused argument as such (does not mean they will get optimized out or anything)
- correctly initialize structs with all data needed
All these were found by generating the project using `meson -Dwarning_level=3 -Dwerror=true`
* remove undefined behavior, correct data types
* Comment manual bit manipulation to be investigated
* check for more edge cases, replace multiple cleanups with goto
* remove system specific includes
* Fixed rendering computations for y offset.
* Force monospacing if every ascii character has the same integer advance.
* Added in explanatory comment.
* Fixed issues.
* Made lines less long.
Guldomanandtakase1121
Adamandtakase1121
Jan200101andtakase1121
Julien Voisinandtakase1121
jgmdev