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[Impeller] Conditionally use A8 or R8 format glyph atlas based on capabilities. #50534

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auto-submit merged 10 commits into from
Feb 14, 2024
Merged

[Impeller] Conditionally use A8 or R8 format glyph atlas based on capabilities. #50534

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58e9329
[Impeller] Use R8 instead of A8 for text atlas.
Feb 10, 2024
b3d9c1e
add case for texturegles.
Feb 10, 2024
f3a608f
++
Feb 11, 2024
fdea14a
wip texture format.
Feb 13, 2024
e06eca8
Add capability check.
Feb 13, 2024
815c2ee
Merge branch 'main' of github.com:flutter/engine into use_r8_everywhere
Feb 13, 2024
f456c76
more updates for capability.
Feb 13, 2024
53116aa
use specialization constant.
Feb 14, 2024
42c7e0f
add missing assignment.
Feb 14, 2024
5d2875d
Merge branch 'main' into use_r8_everywhere
Feb 14, 2024
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jonahwilliams committed Feb 11, 2024
commit f3a608f676379d6b86f5981d3d253f01729cfc7f
4 changes: 2 additions & 2 deletions impeller/typographer/backends/stb/typographer_context_stb.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -516,10 +516,10 @@ std::shared_ptr<GlyphAtlas> TypographerContextSTB::CreateGlyphAtlas(
PixelFormat format;
switch (type) {
case GlyphAtlas::Type::kRedBitmap:
format = PixelFormat::kA8UNormInt;
format = PixelFormat::kR8UNormInt;
break;
case GlyphAtlas::Type::kColorBitmap:
format = DISABLE_COLOR_FONT_SUPPORT ? PixelFormat::kA8UNormInt
format = DISABLE_COLOR_FONT_SUPPORT ? PixelFormat::kR8UNormInt
: PixelFormat::kR8G8B8A8UNormInt;
break;
}
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