…nto our ImTextureData to keep the indirection, clear TexIsBuilt.

The idea is that a legacy backend can somehow add a if (!atlas->IsBuilt()) ImGui_ImplXXXXX_CreateFontsTexture() call _after_ Render() and some features are supported.

…s not required caching.

…takes size instead of scale as this will be needed.

# Conflicts:
#	imgui_internal.h

… to PushFont() as well.

Fonts: Fixed PopFont() recovery.

(To squash into "Added PushFontSize(), PopFontSize() api."

…yphMaxAdvanceX by scaling from ref value.

Overwriting cfg->PixelSnapH = true; in imgui_freetype is weird.

…d compat design)

…alized drawlists.

…ts with no fallback)

…kedSizes

…trics.

…mpatible with baked system, lazily baked.

…ing custom backend per font source. Backend BakedInit/Destroy/AddGlyph process a single source.

… metrics. Actual glyphs are renderer+packed when used by drawing functions. (ocornut#8758, ocornut#8465)

(Breaking) breaks signature of ImFontLoader::FontBakedLoadGlyph, sorry.

When used with FreeType this value is passed as `face_index` which needs to be 32-bits.

# Conflicts:
#	docs/CHANGELOG.txt

(Untested)

…t#8764)

…re ALLEGRO_LOCK_WRITEONLY needed all texels to be rewritten. (ocornut#8770)

…d Ellipsis glyphs. (ocornut#8763)

Only the call to ImFontAtlasBuildSetupFontLoader() is the notable change. The change in ImFontAtlasFontInitOutput() is merely to use an existing helper function.

…f on emscripten / apple / android (ocornut#8742, ocornut#8733)

We can divide platforms into two cases based on how they report screen geometry:
- Case 1: Platforms which report screen size in "physical pixels": Windows (for "Dpi aware" apps), Linux (with Wayland)
- Case 2: Platforms which report screen size in "density-independent pixels": macOS, iOS, Android, emscripten

As a consequence, there are two important things we need to know:
- FramebufferScale: The scaling factor FrameBufferSize / ScreenSize
  - In case 1, the framebuffer size is equal to the screen size and DisplayFramebufferScale=1.
  - In case 2, the framebuffer size is equal to the screen size multiplied by a factor, for example DisplayFramebufferScale=2.
- ContentScale The scaling factor for the content that we will display
  - In case 1, the content scale will often need to be > 1 (e.g., 2), because we will need to display bigger elements so that they show with a correct physical size on the screen.
  - In case 2, the content scale is equal to 1
This commit fixes ContentScale for platforms in case 2.

…trib.glfw3 (ocornut#8742)

This unofficial port offers a better support for HighDPI.
See
- https://emscripten.org/docs/compiling/Contrib-Ports.html
- https://github.com/pongasoft/emscripten-glfw

…entire chunks of internal widgets to create their own.

, ocornut#7961, ocornut#7669)

…re identical). (ocornut#8786)

…8783)

…increases RefCount. Added comments about ImTextureData::GetTexRef(). (ocornut#8789)

… no table (matching most other table getters). TableSetBgColor() uses IM_ASSERT_USER_ERROR.

…ing textures. (ocornut#8802)

…at doesn't require a CPU copy. (ocornut#8802, ocornut#8465)

Amend/fix dbb91a5