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Uncached LRGB->RGB conversion

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The new LRGB->RGB conversion is in speed comparable to array lookup,
so instead of precomputing the palette and then looking up values, just
recompute the conversion for each pixel.
This commit is contained in:
Ilari Liusvaara 2021-02-16 08:50:54 +02:00
parent b0809e58ed
commit aa190c9f92
1 changed files with 2 additions and 10 deletions
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12
src/library/framebuffer-pixfmt-lrgb.cpp
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@ -46,7 +46,7 @@ void _pixfmt_lrgb::decode(uint32_t* target, const uint8_t* src, size_t width,
{
const uint32_t* _src = reinterpret_cast<const uint32_t*>(src);
for(size_t i = 0; i < width; i++)
target[i] = auxp.pcache[_src[i] & 0x7FFFF];
target[i] = convert_lowcolor(_src[i], auxp.rshift, auxp.gshift, auxp.bshift);
}
void _pixfmt_lrgb::decode(uint64_t* target, const uint8_t* src, size_t width,
@ -54,16 +54,12 @@ void _pixfmt_lrgb::decode(uint64_t* target, const uint8_t* src, size_t width,
{
const uint32_t* _src = reinterpret_cast<const uint32_t*>(src);
for(size_t i = 0; i < width; i++)
target[i] = auxp.pcache[_src[i] & 0x7FFFF];
target[i] = convert_hicolor(_src[i], auxp.rshift, auxp.gshift, auxp.bshift);
}
void _pixfmt_lrgb::set_palette(auxpalette<false>& auxp, uint8_t rshift, uint8_t gshift,
uint8_t bshift)
{
auxp.pcache.resize(0x80000);
for(size_t i = 0; i < 0x80000; i++) {
auxp.pcache[i] = convert_lowcolor(i, rshift, gshift, bshift);
}
auxp.rshift = rshift;
auxp.gshift = gshift;
auxp.bshift = bshift;
@ -72,10 +68,6 @@ void _pixfmt_lrgb::set_palette(auxpalette<false>& auxp, uint8_t rshift, uint8_t
void _pixfmt_lrgb::set_palette(auxpalette<true>& auxp, uint8_t rshift, uint8_t gshift,
uint8_t bshift)
{
auxp.pcache.resize(0x80000);
for(size_t i = 0; i < 0x80000; i++) {
auxp.pcache[i] = convert_hicolor(i, rshift, gshift, bshift);
}
auxp.rshift = rshift;
auxp.gshift = gshift;
auxp.bshift = bshift;