Mercurial > repos > blastem
changeset 1875:3457d338ae25
Small optimization to render_map in VDP code
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Mon, 19 Aug 2019 19:06:22 -0700 |
parents | cae2b55d683f |
children | 96971b673f51 |
files | vdp.c |
diffstat | 1 files changed, 5 insertions(+), 8 deletions(-) [+] |
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line diff
--- a/vdp.c Sat Aug 17 18:44:15 2019 -0700 +++ b/vdp.c Mon Aug 19 19:06:22 2019 -0700 @@ -1197,28 +1197,25 @@ } uint8_t pal_priority = (col >> 9) & 0x70; uint32_t bits = *((uint32_t *)(&context->vdpmem[address])); + tmp_buf += offset; if (col & MAP_BIT_H_FLIP) { uint32_t shift = 28; for (int i = 0; i < 4; i++) { uint8_t right = pal_priority | ((bits >> shift) & 0xF); shift -= 4; - tmp_buf[offset++] = pal_priority | ((bits >> shift) & 0xF); + *(tmp_buf++) = pal_priority | ((bits >> shift) & 0xF); shift -= 4; - offset &= SCROLL_BUFFER_MASK; - tmp_buf[offset++] = right; - offset &= SCROLL_BUFFER_MASK; + *(tmp_buf++) = right; } } else { for (int i = 0; i < 4; i++) { uint8_t right = pal_priority | (bits & 0xF); bits >>= 4; - tmp_buf[offset++] = pal_priority | (bits & 0xF); - offset &= SCROLL_BUFFER_MASK; + *(tmp_buf++) = pal_priority | (bits & 0xF); bits >>= 4; - tmp_buf[offset++] = right; - offset &= SCROLL_BUFFER_MASK; + *(tmp_buf++) = right; } } }