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Speedup drawTile.

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This commit is contained in:
František Jahoda
2017-11-22 22:16:22 +01:00
parent cfc8fa2030
commit 069e7a5445
1 changed files with 40 additions and 39 deletions
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79
src/tic.c
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@@ -200,62 +200,63 @@ static void drawRectBorder(tic_machine* machine, s32 x, s32 y, s32 width, s32 he
drawVLine(machine, x + width - 1, y, height, color);
}
static void drawRectRev(tic_machine* machine, s32 y, s32 x, s32 height, s32 width, u8 color)
{
drawRect(machine, x, y, width, height, color);
}
static void drawTile(tic_machine* machine, const tic_tile* buffer, s32 x, s32 y, u8* colors, s32 count, s32 scale, tic_flip flip, tic_rotate rotate)
{
u8 transparent[16];
memset(transparent, 0, sizeof(transparent));
for (s32 i = 0; i < count; i++) transparent[colors[i]] = 1;
flip &= 0b11;
rotate &= 0b11;
s32 a = flip & tic_horz_flip ? -scale : scale;
s32 b = flip & tic_vert_flip ? -scale : scale;
if (flip == 0 && rotate == 0 && scale == 1) {
// most common path
s32 i = 0;
for(s32 py=0; py < TIC_SPRITESIZE; py++, y+=1)
{
s32 xx = x;
for(s32 px=0; px < TIC_SPRITESIZE; px++, xx+=1)
{
u8 color = tic_tool_peek4(buffer, i++);
if(!transparent[color]) setPixel(machine, xx, y, color);
}
}
return;
}
void(*drawRectFunc)(tic_machine*, s32, s32, s32, s32, u8) = drawRect;
s32 a = flip & tic_horz_flip ? -1 : 1;
s32 b = flip & tic_vert_flip ? -1 : 1;
if(rotate == tic_90_rotate) a = -a;
else if(rotate == tic_180_rotate) a = -a, b = -b;
else if(rotate == tic_270_rotate) b = -b;
x += (scale - a) * (TIC_SPRITESIZE - 1) >> 1;
y += (scale - b) * (TIC_SPRITESIZE - 1) >> 1;
bool swap_axis = (rotate == tic_90_rotate || rotate == tic_270_rotate);
if(rotate == tic_90_rotate || rotate == tic_270_rotate)
for(s32 py=0; py < TIC_SPRITESIZE; py++, y+=scale)
{
s32 t = a; a = b; b = t;
t = x; x = y; y = t;
drawRectFunc = drawRectRev;
}
for(s32 i = 0, px = 0, xx = x; i < TIC_SPRITESIZE * TIC_SPRITESIZE; px++, xx += a, i++)
{
if(px == TIC_SPRITESIZE) px = 0, xx = x, y += b;
u8 color = tic_tool_peek4(buffer, i);
if(count == 1)
s32 xx = x;
for(s32 px=0; px < TIC_SPRITESIZE; px++, xx+=scale)
{
if(*colors != color)
drawRectFunc(machine, xx, y, scale, scale, color);
}
else
{
bool draw = true;
for(s32 i = 0; i < count; i++)
{
if(color == colors[i])
{
draw = false;
break;
s32 i;
s32 ix, iy;
ix = a == 1?px:TIC_SPRITESIZE-px;
iy = b == 1?py:TIC_SPRITESIZE-py;
if(swap_axis) {
i = ix * TIC_SPRITESIZE + iy;
} else {
i = iy * TIC_SPRITESIZE + ix;
}
u8 color = tic_tool_peek4(buffer, i);
if(!transparent[color]) {
if (scale == 1) {
setPixel(machine, xx, y, color);
} else {
drawRect(machine, xx, y, scale, scale, color);
}
}
if(draw)
drawRectFunc(machine, xx, y, scale, scale, color);
}
}
}
}
static void drawMap(tic_machine* machine, const tic_gfx* src, s32 x, s32 y, s32 width, s32 height, s32 sx, s32 sy, u8 chromakey, s32 scale, RemapFunc remap, void* data)