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LibGfx: Cleanup of Painter::do_draw_scaled_bitmap()

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No functional changes.
This commit is contained in:
Jelle Raaijmakers 2023-05-19 00:26:09 +02:00 committed by Andreas Kling
parent 88a7bb5ba7
commit 4944b16bd5
Notes: sideshowbarker 2024-07-17 23:07:41 +09:00 
Author: https://github.com/gmta
Commit: https://github.com/SerenityOS/serenity/commit/4944b16bd5
Pull-request: https://github.com/SerenityOS/serenity/pull/18914
1 changed files with 13 additions and 13 deletions
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26
Userland/Libraries/LibGfx/Painter.cpp
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@ -1188,7 +1188,7 @@ ALWAYS_INLINE static void do_draw_scaled_bitmap(Gfx::Bitmap& target, IntRect con
if (clipped_src_rect.is_empty())
return;
if (scaling_mode == Painter::ScalingMode::NearestFractional) {
if constexpr (scaling_mode == Painter::ScalingMode::NearestFractional) {
int hfactor = (dst_rect.width() + int_src_rect.width() - 1) / int_src_rect.width();
int vfactor = (dst_rect.height() + int_src_rect.height() - 1) / int_src_rect.height();
return do_draw_integer_scaled_bitmap<has_alpha_channel>(target, dst_rect, int_src_rect, source, hfactor, vfactor, get_pixel, opacity);
@ -1208,26 +1208,26 @@ ALWAYS_INLINE static void do_draw_scaled_bitmap(Gfx::Bitmap& target, IntRect con
}
}
bool has_opacity = opacity != 1.0f;
bool has_opacity = opacity != 1.f;
i64 shift = (i64)1 << 32;
i64 fractional_mask = (shift - (u64)1);
i64 fractional_mask = shift - (u64)1;
i64 bilinear_offset_x = (1ll << 31) * (src_rect.width() / dst_rect.width() - 1);
i64 bilinear_offset_y = (1ll << 31) * (src_rect.height() / dst_rect.height() - 1);
i64 hscale = (src_rect.width() * shift) / dst_rect.width();
i64 vscale = (src_rect.height() * shift) / dst_rect.height();
i64 hscale = src_rect.width() * shift / dst_rect.width();
i64 vscale = src_rect.height() * shift / dst_rect.height();
i64 src_left = src_rect.left() * shift;
i64 src_top = src_rect.top() * shift;
i64 clipped_src_bottom_shifted = (clipped_src_rect.y() + clipped_src_rect.height()) * shift;
i64 clipped_src_right_shifted = (clipped_src_rect.x() + clipped_src_rect.width()) * shift;
for (int y = clipped_rect.top(); y <= clipped_rect.bottom(); ++y) {
auto* scanline = (Color*)target.scanline(y);
auto desired_y = ((y - dst_rect.y()) * vscale + src_top);
auto* scanline = reinterpret_cast<Color*>(target.scanline(y));
auto desired_y = (y - dst_rect.y()) * vscale + src_top;
if (desired_y < clipped_src_rect.top() || desired_y > clipped_src_bottom_shifted)
continue;
for (int x = clipped_rect.left(); x <= clipped_rect.right(); ++x) {
auto desired_x = ((x - dst_rect.x()) * hscale + src_left);
auto desired_x = (x - dst_rect.x()) * hscale + src_left;
if (desired_x < clipped_src_rect.left() || desired_x > clipped_src_right_shifted)
continue;
@ -1262,8 +1262,8 @@ ALWAYS_INLINE static void do_draw_scaled_bitmap(Gfx::Bitmap& target, IntRect con
float x_ratio = (desired_x & fractional_mask) / (float)shift;
float y_ratio = (desired_y & fractional_mask) / (float)shift;
float scaled_x_ratio = clamp(x_ratio * dst_rect.width() / (float)src_rect.width(), 0.0f, 1.0f);
float scaled_y_ratio = clamp(y_ratio * dst_rect.height() / (float)src_rect.height(), 0.0f, 1.0f);
float scaled_x_ratio = clamp(x_ratio * dst_rect.width() / (float)src_rect.width(), 0.f, 1.f);
float scaled_y_ratio = clamp(y_ratio * dst_rect.height() / (float)src_rect.height(), 0.f, 1.f);
auto top_left = get_pixel(source, scaled_x0, scaled_y0);
auto top_right = get_pixel(source, scaled_x1, scaled_y0);
@ -1282,11 +1282,11 @@ ALWAYS_INLINE static void do_draw_scaled_bitmap(Gfx::Bitmap& target, IntRect con
if (has_opacity)
src_pixel.set_alpha(src_pixel.alpha() * opacity);
if constexpr (has_alpha_channel) {
if constexpr (has_alpha_channel)
scanline[x] = scanline[x].blend(src_pixel);
} else {
else
scanline[x] = src_pixel;
}
}
}
}