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Merge pull request #2593 from elyosh/svgaoptim001

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SVGA rendering optimizations
This commit is contained in:
Miran Grča
2022-08-09 01:52:59 +02:00
committed by GitHub
parent e2e14cf31f d3e6d13a84
commit fa4bf124bd
1 changed files with 29 additions and 29 deletions
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58
src/video/vid_svga_render.c
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@@ -43,35 +43,33 @@ svga_render_null(svga_t *svga)
void void
svga_render_blank(svga_t *svga) svga_render_blank(svga_t *svga)
{ {
int x, xx;
if ((svga->displine + svga->y_add) < 0) if ((svga->displine + svga->y_add) < 0)
return; return;
if (svga->firstline_draw == 2000) if (svga->firstline_draw == 2000)
svga->firstline_draw = svga->displine; svga->firstline_draw = svga->displine;
svga->lastline_draw = svga->displine; svga->lastline_draw = svga->displine;
for (x = 0; x < (svga->hdisp + svga->scrollcache); x++) { uint32_t char_width = 0;
switch (svga->seqregs[1] & 9) {
case 0: switch (svga->seqregs[1] & 9) {
for (xx = 0; xx < 9; xx++) case 0:
buffer32->line[svga->displine + svga->y_add][svga->x_add + (x * 9) + xx] = 0x00000000; char_width = 9;
break; break;
case 1: case 1:
for (xx = 0; xx < 8; xx++) char_width = 8;
buffer32->line[svga->displine + svga->y_add][svga->x_add + (x * 8) + xx] = 0x00000000; break;
break; case 8:
case 8: char_width = 18;
for (xx = 0; xx < 18; xx++) break;
buffer32->line[svga->displine + svga->y_add][svga->x_add + (x * 18) + xx] = 0x00000000; case 9:
break; char_width = 16;
case 9: break;
for (xx = 0; xx < 16; xx++)
buffer32->line[svga->displine + svga->y_add][svga->x_add + (x * 16) + xx] = 0x00000000;
break;
}
} }
uint32_t *line_ptr = &buffer32->line[svga->displine + svga->y_add][svga->x_add];
uint32_t line_width = (svga->hdisp + svga->scrollcache) * char_width * sizeof(uint32_t);
memset(line_ptr, 0, line_width);
} }
@@ -81,13 +79,14 @@ svga_render_overscan_left(svga_t *svga)
int i; int i;
if ((svga->displine + svga->y_add) < 0) if ((svga->displine + svga->y_add) < 0)
return; return;
if (svga->scrblank || (svga->hdisp == 0)) if (svga->scrblank || (svga->hdisp == 0))
return; return;
uint32_t *line_ptr = buffer32->line[svga->displine + svga->y_add];
for (i = 0; i < svga->x_add; i++) for (i = 0; i < svga->x_add; i++)
buffer32->line[svga->displine + svga->y_add][i] = svga->overscan_color; *line_ptr++ = svga->overscan_color;
} }
@@ -97,14 +96,15 @@ svga_render_overscan_right(svga_t *svga)
int i, right; int i, right;
if ((svga->displine + svga->y_add) < 0) if ((svga->displine + svga->y_add) < 0)
return; return;
if (svga->scrblank || (svga->hdisp == 0)) if (svga->scrblank || (svga->hdisp == 0))
return; return;
uint32_t *line_ptr = &buffer32->line[svga->displine + svga->y_add][svga->x_add + svga->hdisp];
right = (overscan_x >> 1); right = (overscan_x >> 1);
for (i = 0; i < right; i++) for (i = 0; i < right; i++)
buffer32->line[svga->displine + svga->y_add][svga->x_add + svga->hdisp + i] = svga->overscan_color; *line_ptr++ = svga->overscan_color;
} }