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LibWeb: Skip large stacking context in gpu painter only if it allocates

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Skipping all stacking contexts with a size larger than 10000px in one
dimension was a mistake because it also affects pages that are simply
tall due to having a lot of content. Instead, we only need to skip if
the stacking context requires the allocation of a framebuffer that
could possibly fail.

Fixes https://github.com/SerenityOS/serenity/issues/23397
This commit is contained in:
Aliaksandr Kalenik 2024-03-02 13:32:43 +01:00 • committed by Andreas Kling
parent d8e8293b7e
commit 1bd20a4595
1 changed files with 7 additions and 7 deletions
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14
Userland/Libraries/LibWeb/Painting/CommandExecutorGPU.cpp
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@ -103,13 +103,6 @@ CommandResult CommandExecutorGPU::push_stacking_context(float opacity, bool is_f
if (source_paintable_rect.is_empty())
return CommandResult::SkipStackingContext;
// If, due to layout mistakes, we encounter an excessively large rectangle here, it must be skipped to prevent
// framebuffer allocation failure.
if (source_paintable_rect.width() > 10000 || source_paintable_rect.height() > 10000) {
dbgln("FIXME: Skipping stacking context with excessively large paintable rect: {}", source_paintable_rect);
return CommandResult::SkipStackingContext;
}
m_stacking_contexts.last().stacking_context_depth++;
painter().save();
if (is_fixed_position) {
@ -128,6 +121,13 @@ CommandResult CommandExecutorGPU::push_stacking_context(float opacity, bool is_f
final_transform.multiply(stacking_context_transform);
final_transform.multiply(inverse_origin_translation);
if (opacity < 1 || !stacking_context_transform.is_identity_or_translation()) {
// If, due to layout mistakes, we encounter an excessively large rectangle here, it must be skipped to prevent
// framebuffer allocation failure.
if (source_paintable_rect.width() > 10000 || source_paintable_rect.height() > 10000) {
dbgln("FIXME: Skipping stacking context with excessively large paintable rect: {}", source_paintable_rect);
return CommandResult::SkipStackingContext;
}
auto canvas = AccelGfx::Canvas::create(source_paintable_rect.size());
auto painter = AccelGfx::Painter::create(m_context, canvas);
painter->translate(-source_paintable_rect.location().to_type<float>());