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(svn r23727) -Codechange: speedup the 32bpp palette animation by reducing the amount of compares. This is possible because the function is called with only 2 possible conditions: from 0 to 255 (full palette update, 8bpp only) or from PALETTE_ANIM_START to 255

This commit is contained in:
truebrain 2012-01-03 09:46:37 +00:00
parent 4da7f2b723
commit 8dbb654e39
1 changed files with 7 additions and 7 deletions
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14
src/blitter/32bpp_anim.cpp
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@ -323,7 +323,7 @@ void Blitter_32bppAnim::CopyFromBuffer(void *video, const void *src, int width,
* palette animation, much cheaper though slightly nastier. */
for (int i = 0; i < width; i++) {
uint colour = GB(*anim_pal, 0, 8);
if (IsInsideBS(colour, PALETTE_ANIM_START, PALETTE_ANIM_SIZE)) {
if (colour >= PALETTE_ANIM_START) {
/* Update this pixel */
*dst_pal = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim_pal, 8, 8));
}
@ -417,11 +417,11 @@ void Blitter_32bppAnim::PaletteAnimate(const Palette &palette)
assert(!_screen_disable_anim);
this->palette = palette;
/* Never repaint the transparency pixel */
if (this->palette.first_dirty == 0) {
this->palette.first_dirty++;
this->palette.count_dirty--;
}
/* If first_dirty is 0, it is for 8bpp indication to send the new
* palette. As we dont do that for 32bpp, ignore that request
* completely */
if (this->palette.first_dirty == 0) return;
assert(this->palette.first_dirty == PALETTE_ANIM_START);
const uint16 *anim = this->anim_buf;
uint32 *dst = (uint32 *)_screen.dst_ptr;
@ -430,7 +430,7 @@ void Blitter_32bppAnim::PaletteAnimate(const Palette &palette)
for (int y = this->anim_buf_height; y != 0 ; y--) {
for (int x = this->anim_buf_width; x != 0 ; x--) {
uint colour = GB(*anim, 0, 8);
if (IsInsideBS(colour, this->palette.first_dirty, this->palette.count_dirty)) {
if (colour >= PALETTE_ANIM_START) {
/* Update this pixel */
*dst = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim, 8, 8));
}