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Minor perf improvements

This commit is contained in:
David Guillen Fandos 2023-08-05 00:39:44 +02:00
parent 195e82b615
commit d6f5d72a97
1 changed files with 6 additions and 4 deletions
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10
video.cc
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@ -181,6 +181,7 @@ static inline void render_part_tile_Nbpp(u32 bg_comb, u32 px_comb,
} else {
// In 4bpp mode, the tile[15..12] bits contain the sub-palette number.
u16 tilepal = (tile >> 12) << 4;
u16 pxflg = px_comb | tilepal;
// Only 32 bits (8 pixels * 4 bits)
for (u32 i = start; i < end; i++, dest_ptr++) {
u32 selb = hflip ? (3-i/2) : i/2;
@ -190,9 +191,9 @@ static inline void render_part_tile_Nbpp(u32 bg_comb, u32 px_comb,
if (rdtype == FULLCOLOR)
*dest_ptr = paltbl[tilepal | pval];
else if (rdtype == INDXCOLOR)
*dest_ptr = px_comb | tilepal | pval;
*dest_ptr = pxflg | pval;
else if (rdtype == STCKCOLOR)
*dest_ptr = px_comb | tilepal | pval | ((isbase ? bg_comb : *dest_ptr) << 16); // Stack pixels
*dest_ptr = pxflg | pval | ((isbase ? bg_comb : *dest_ptr) << 16); // Stack pixels
}
else if (isbase) {
if (rdtype == FULLCOLOR)
@ -239,6 +240,7 @@ static inline void render_tile_Nbpp(
}
} else {
u16 tilepal = (tile >> 12) << 4;
u16 pxflg = px_comb | tilepal;
const u16 *subpal = &paltbl[tilepal];
u32 tilepix = eswap32(*(u32*)tile_ptr);
for (u32 i = 0; i < 8; i++, dest_ptr++) {
@ -247,9 +249,9 @@ static inline void render_tile_Nbpp(
if (rdtype == FULLCOLOR)
*dest_ptr = subpal[pval];
else if (rdtype == INDXCOLOR)
*dest_ptr = px_comb | tilepal | pval;
*dest_ptr = pxflg | pval;
else if (rdtype == STCKCOLOR)
*dest_ptr = px_comb | tilepal | pval | ((isbase ? bg_comb : *dest_ptr) << 16); // Stack pixels
*dest_ptr = pxflg | pval | ((isbase ? bg_comb : *dest_ptr) << 16); // Stack pixels
}
else if (isbase) {
if (rdtype == FULLCOLOR)