* 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
* remove scaling logic from font code
for the time being its been hardcoded to 1 for the non SDL Renderer basewin setup, so nothing is lost for non MacOS users.
will be revisited in the future when scaling is improved with SDL3 and moved into scripts.
* remove unused window_renderer argument from font functions
* move window logic to lua, pass window via argument
* rename window creation functions `*_create`, `*_destroy`, add real init
* Set active window when processing frame
* get size directly from RenWindow, get active window size from renderer
* correct reverted draw calls
* fix window not reappearing on restart
* add simple logic to persist the core window
* fix style
* add renwindow documentation
* make windows hidden by default again
* reorder ren_update_rects execution, add comment to note future work
* 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.
* fix: free-before-init in renwin_init_surface when using sdl renderer
`ren->rensurface.surface` presupposes zero-initialized rensurface.
Rensurface was not actually zero-initialized.
It is now.
* fix: heap buffer overflow in process_env_free
`process_env_free` presupposed that it was null-terminated.
Pass length to free instead.
* use calloc instead of memset for zero-init
Co-authored-by: Guldoman <giulio.lettieri@gmail.com>
---------
Co-authored-by: Guldoman <giulio.lettieri@gmail.com>
* 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.
Jan200101
Takase
Guldoman
Adam Harrison
Chloé Vulquin
Julien Voisin
Aqil Contractor
jgmdev