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Optimize non-native bilinear transforms

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Reading directly from an array instead of calling a function pointer
is much faster.

Change-Id: I833b33448bad064d6f38d2f9ff44138d90206822
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
This commit is contained in:
Allan Sandfeld Jensen 2015-04-13 11:48:00 +02:00 committed by Joerg Bornemann
parent d4bc56cb42
commit 528279febe
1 changed files with 33 additions and 12 deletions
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45
src/gui/painting/qdrawhelper.cpp
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@ -1931,10 +1931,17 @@ static const uint *QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Oper
int x2;
fetchTransformedBilinear_pixelBounds<blendType>(image_width, image_x1, image_x2, x1, x2);
buf1[i * 2 + 0] = fetch(s1, x1);
buf1[i * 2 + 1] = fetch(s1, x2);
buf2[i * 2 + 0] = fetch(s2, x1);
buf2[i * 2 + 1] = fetch(s2, x2);
if (layout->bpp == QPixelLayout::BPP32) {
buf1[i * 2 + 0] = ((const uint*)s1)[x1];
buf1[i * 2 + 1] = ((const uint*)s1)[x2];
buf2[i * 2 + 0] = ((const uint*)s2)[x1];
buf2[i * 2 + 1] = ((const uint*)s2)[x2];
} else {
buf1[i * 2 + 0] = fetch(s1, x1);
buf1[i * 2 + 1] = fetch(s1, x2);
buf2[i * 2 + 0] = fetch(s2, x1);
buf2[i * 2 + 1] = fetch(s2, x2);
}
fx += fdx;
}
@ -1989,10 +1996,17 @@ static const uint *QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Oper
const uchar *s1 = data->texture.scanLine(y1);
const uchar *s2 = data->texture.scanLine(y2);
buf1[i * 2 + 0] = fetch(s1, x1);
buf1[i * 2 + 1] = fetch(s1, x2);
buf2[i * 2 + 0] = fetch(s2, x1);
buf2[i * 2 + 1] = fetch(s2, x2);
if (layout->bpp == QPixelLayout::BPP32) {
buf1[i * 2 + 0] = ((const uint*)s1)[x1];
buf1[i * 2 + 1] = ((const uint*)s1)[x2];
buf2[i * 2 + 0] = ((const uint*)s2)[x1];
buf2[i * 2 + 1] = ((const uint*)s2)[x2];
} else {
buf1[i * 2 + 0] = fetch(s1, x1);
buf1[i * 2 + 1] = fetch(s1, x2);
buf2[i * 2 + 0] = fetch(s2, x1);
buf2[i * 2 + 1] = fetch(s2, x2);
}
fx += fdx;
fy += fdy;
@ -2074,10 +2088,17 @@ static const uint *QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Oper
const uchar *s1 = data->texture.scanLine(y1);
const uchar *s2 = data->texture.scanLine(y2);
buf1[i * 2 + 0] = fetch(s1, x1);
buf1[i * 2 + 1] = fetch(s1, x2);
buf2[i * 2 + 0] = fetch(s2, x1);
buf2[i * 2 + 1] = fetch(s2, x2);
if (layout->bpp == QPixelLayout::BPP32) {
buf1[i * 2 + 0] = ((const uint*)s1)[x1];
buf1[i * 2 + 1] = ((const uint*)s1)[x2];
buf2[i * 2 + 0] = ((const uint*)s2)[x1];
buf2[i * 2 + 1] = ((const uint*)s2)[x2];
} else {
buf1[i * 2 + 0] = fetch(s1, x1);
buf1[i * 2 + 1] = fetch(s1, x2);
buf2[i * 2 + 0] = fetch(s2, x1);
buf2[i * 2 + 1] = fetch(s2, x2);
}
fx += fdx;
fy += fdy;