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LibAccelGfx+LibWeb: Add texture cache for immutable bitmaps
This change introduces a texture cache for immutable bitmaps in the GPU painter. The cache is persisted across page repaints, so now, on page scroll repaint, in many cases, we won't need to upload any new textures. Also, if the same image is painted more than once on a page, its texture will only be uploaded once. Generally, the GPU painter works much faster with this change on all pages that have images.
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7 changed files with 65 additions and 1 deletions
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@ -57,6 +57,9 @@ public:
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void draw_scaled_bitmap(Gfx::FloatRect const& dst_rect, Gfx::Bitmap const&, Gfx::FloatRect const& src_rect, ScalingMode = ScalingMode::NearestNeighbor);
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void draw_scaled_bitmap(Gfx::IntRect const& dst_rect, Gfx::Bitmap const&, Gfx::IntRect const& src_rect, ScalingMode = ScalingMode::NearestNeighbor);
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void draw_scaled_immutable_bitmap(Gfx::IntRect const& dst_rect, Gfx::ImmutableBitmap const&, Gfx::IntRect const& src_rect, ScalingMode = ScalingMode::NearestNeighbor);
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void draw_scaled_immutable_bitmap(Gfx::FloatRect const& dst_rect, Gfx::ImmutableBitmap const&, Gfx::FloatRect const& src_rect, ScalingMode = ScalingMode::NearestNeighbor);
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void prepare_glyph_texture(HashMap<Gfx::Font const*, HashTable<u32>> const& unique_glyphs);
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struct GlyphsTextureKey {
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@ -90,6 +93,8 @@ public:
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void blit_canvas(Gfx::IntRect const& dst_rect, Canvas const&, float opacity = 1.0f);
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void blit_canvas(Gfx::FloatRect const& dst_rect, Canvas const&, float opacity = 1.0f);
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void update_immutable_bitmap_texture_cache(HashMap<u32, Gfx::ImmutableBitmap const*>&);
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private:
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Context& m_context;
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