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Add fast dword-sized copy and fill to the Painter code.

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This commit is contained in:
Andreas Kling 2019-01-12 20:56:09 +01:00
parent 24b2cadb82
commit f2551c45ab
Notes: sideshowbarker 2024-07-19 16:03:47 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/f2551c45ab6
1 changed files with 51 additions and 12 deletions
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63
Widgets/Painter.cpp
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@ -7,6 +7,36 @@
#define DEBUG_WIDGET_UNDERDRAW
ALWAYS_INLINE void fast_dword_copy(dword* dest, const dword* src, size_t count)
{
#ifdef SERENITY
asm volatile(
"rep movsl\n"
: "=S"(src), "=D"(dest)
: "S"(src), "D"(dest), "c"(count)
: "memory"
);
#else
memcpy(dest, src, count * sizeof(dword));
#endif
}
ALWAYS_INLINE void fast_dword_fill(dword* dest, dword value, size_t count)
{
#ifdef SERENITY
asm volatile(
"rep stosl\n"
: "=D"(dest)
: "D"(dest), "c"(count), "a"(value)
: "memory"
);
#else
for (size_t i = 0; x <= count; ++x) {
dest[i] = value;
}
#endif
}
Painter::Painter(GraphicsBitmap& bitmap)
{
m_font = &Font::defaultFont();
@ -38,11 +68,13 @@ void Painter::fill_rect(const Rect& rect, Color color)
Rect r = rect;
r.moveBy(m_translation);
for (int y = max(r.top(), m_clip_rect.top()); y <= min(r.bottom(), m_clip_rect.bottom()); ++y) {
auto* bits = m_target->scanline(y);
for (int x = max(r.left(), m_clip_rect.left()); x <= min(r.right(), m_clip_rect.right()); ++x) {
bits[x] = color.value();
}
int min_y = max(r.top(), m_clip_rect.top());
int max_y = min(r.bottom(), m_clip_rect.bottom());
int min_x = max(r.left(), m_clip_rect.left());
int max_x = min(r.right(), m_clip_rect.right());
for (int y = min_y; y <= max_y; ++y) {
RGBA32* bits = m_target->scanline(y);
fast_dword_fill(bits + min_x, color.value(), max_x - min_x + 1);
}
}
@ -51,12 +83,15 @@ void Painter::draw_rect(const Rect& rect, Color color)
Rect r = rect;
r.moveBy(m_translation);
for (int y = max(r.top(), m_clip_rect.top()); y <= min(r.bottom(), m_clip_rect.bottom()); ++y) {
int min_y = max(r.top(), m_clip_rect.top());
int max_y = min(r.bottom(), m_clip_rect.bottom());
int min_x = max(r.left(), m_clip_rect.left());
int max_x = min(r.right(), m_clip_rect.right());
for (int y = min_y; y <= max_y; ++y) {
auto* bits = m_target->scanline(y);
if (y == r.top() || y == r.bottom()) {
for (int x = max(r.left(), m_clip_rect.left()); x <= min(r.right(), m_clip_rect.right()); ++x) {
bits[x] = color.value();
}
fast_dword_fill(bits + min_x, color.value(), max_x - min_x + 1);
} else {
if (r.left() >= m_clip_rect.left() && r.left() <= m_clip_rect.right())
bits[r.left()] = color.value();
@ -169,8 +204,12 @@ void Painter::draw_line(const Point& p1, const Point& p2, Color color)
int min_x = max(point1.x(), m_clip_rect.left());
int max_x = min(point2.x(), m_clip_rect.right());
auto* pixels = m_target->scanline(point1.y());
for (int x = min_x; x <= max_x; ++x)
set_pixel_with_draw_op(pixels[x], color);
if (m_draw_op == DrawOp::Copy) {
fast_dword_fill(pixels + min_x, color.value(), max_x - min_x + 1);
} else {
for (int x = min_x; x <= max_x; ++x)
set_pixel_with_draw_op(pixels[x], color);
}
return;
}
@ -213,6 +252,6 @@ void Painter::blit(const Point& position, const GraphicsBitmap& source)
for (int y = 0; y < dst_rect.height(); ++y) {
auto* dst_scanline = m_target->scanline(position.y() + y);
auto* src_scanline = source.scanline(y);
memcpy(dst_scanline + dst_rect.x(), src_scanline + (dst_rect.x() - position.x()), dst_rect.width() * 4);
fast_dword_copy(dst_scanline + dst_rect.x(), src_scanline + (dst_rect.x() - position.x()), dst_rect.width());
}
}