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fix: bare-metal optimizations progress

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GutPuncher 2024-03-30 05:17:13 -04:00
parent 4eaf4f7205
commit de2b050a6f
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GPG key ID: 38CE0A7B6841D1C7
3 changed files with 69 additions and 16 deletions
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15
src/Kernel/KUtils.ZC
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@ -68,7 +68,20 @@ _MEMCOPY::
MOV RDI, U64 SF_ARG1[RBP] // dst
MOV RSI, U64 SF_ARG2[RBP] // src
MOV RCX, U64 SF_ARG3[RBP] // count
@@05: // SSE 128-bit memcopy (count >= 16)
TEST RDI, 0xF // check if dst is 16byte aligned
JNZ @@05 // if not 16byte aligned, jump down to MOVUPS unaligned checks
TEST RSI, 0xF // check if src is 16byte aligned
JNZ @@05 // if not 16byte aligned, jump down to MOVUPS unaligned checks
@@03: // SSE 128-bit ALIGNED memcopy (count >= 16)
CMP RCX, 16 // count <, >, == 16 bytes?
JL @@10 // if count less than 16, jump down
MOVAPS XMM15, [RSI]// move 128 bits, src-->xmm ALIGNED
MOVAPS [RDI], XMM15// move 128 bits, xmm-->dst mem ALIGNED
ADD RSI, 16 // increment src addr by 128 bits
ADD RDI, 16 // increment dst addr by 128 bits
ADD RCX, -16 // decrement count by 128 bits
JMP @@03 // jump back to 16 byte check
@@05: // SSE 128-bit UNALIGNED memcopy (count >= 16)
CMP RCX, 16 // count <, >, == 16 bytes?
JL @@10 // if count less than 16, jump down
MOVUPS XMM15, [RSI]// move 128 bits, src-->xmm

2
src/System/Gr/GrInitB.ZC
View file

@ -187,7 +187,7 @@ U0 GrInit2()
gr.to_8_bits = MAlloc(256 * sizeof(I64));
gr.to_8_colors = MAlloc(256 * sizeof(I64));
gr.screen_cache = MAlloc(sys_framebuffer_width * sys_framebuffer_height);
gr.screen_cache = MAllocAligned(sys_framebuffer_width * sys_framebuffer_height, 16);
gr.text_base = CAlloc(TEXT_ROWS * TEXT_COLS * sizeof(U32));
gr.win_uncovered_bitmap = CAlloc(65536 / 8);

68
src/System/Gr/GrScreen.ZC
View file

@ -344,13 +344,12 @@ U0 GrUpdateTextFG()
U0 DCBlotColor8(CDC *dc, CDC *img)
{
U8 *src = img->body, *b0 = dc->body;
I64 reg j, reg jj, v = 0, k, d0 = img->width_internal * img->height;
U8 *b0 = dc->body;
I64 *src = img->body, reg j, reg jj, v = 0, k, d0 = img->width_internal * img->height;
for (k = 0; k < d0; k += 8)
{
j = *(src(U64 *));
src += 8;
j = *src++;;
do
{
jj = j & 0xFF;
@ -364,10 +363,13 @@ U0 DCBlotColor8(CDC *dc, CDC *img)
}
}
U0 GrCalcScreenUpdates()
//#define GR_CALC_SCREEN_UPDATES_SKIP 2
//#define GR_CALC_SCREEN_UPDATES_CHUNKS 4
$IV,0$U0 GrCalcScreenUpdates()
{
U64 *screen, *last_screen = gr.screen_cache;
U64 i, *src = text.raw_screen, *dst = text.fb_alias, diffs_size = GR_WIDTH * GR_HEIGHT / 8;
U64 reg *screen, reg *last_screen = gr.screen_cache, i, ii, *src = text.raw_screen, *dst = text.fb_alias, reg RDX diffs_size = GR_WIDTH * GR_HEIGHT / 8,
// skip = gr.screen_cache[0], // use 1st U8 of cache as flag to skip cache MemCopy every-other call.
/* reg R9 skip_size64, reg R8 skip_diff, skip_size8*/;
if (gr.screen_zoom == 1)
screen = gr.dc2->body;
@ -376,38 +378,76 @@ U0 GrCalcScreenUpdates()
for (i = 0; i < diffs_size; i++)
if (screen[i] != last_screen[i])
MemCopy(dst + i * 4, src + i * 4, 4 * 64);
{
ii = i * 4;
dst[ii] = src[ii++];
dst[ii] = src[ii++];
dst[ii] = src[ii++];
dst[ii] = src[ii];
}
/*
if (skip < GR_CALC_SCREEN_UPDATES_CHUNKS * GR_CALC_SCREEN_UPDATES_SKIP)
{
if (skip % GR_CALC_SCREEN_UPDATES_SKIP == 0)
{
skip_size64 = skip / GR_CALC_SCREEN_UPDATES_SKIP * text.buffer_size / GR_CALC_SCREEN_UPDATES_CHUNKS / 8;
// skip_diff = diffs_size * 8 / GR_CALC_SCREEN_UPDATES_CHUNKS;
// skip_size8 = skip / GR_CALC_SCREEN_UPDATES_SKIP * skip_diff;
MemCopy(dst + skip_size64,
src + skip_size64,
text.buffer_size / GR_CALC_SCREEN_UPDATES_CHUNKS);
// MemCopy(gr.screen_cache + skip_size8, screen(U8 *) + skip_size8, skip_diff);
}
}
else
skip = -1;
gr.screen_cache[0] = ++skip;
*/
MemCopy(gr.screen_cache, screen, diffs_size * 8);
}
U0 GrUpdateScreen32()
{
U64 size, *dst, reg src64val;
U8 *src, reg a, reg b, c, reg d;
U64 size, *dst, src64val, *src;
U8 a, b, c, d;
PUSHFD
CLI
if (gr.screen_zoom == 1)
{
src = gr.dc2->body;
size = src + gr.dc2->height * gr.dc2->width_internal;
size = src(U8 *) + gr.dc2->height * gr.dc2->width_internal;
}
else
{
GrZoomInScreen;
src = gr.zoomed_dc->body;
size = src + gr.zoomed_dc->height * gr.zoomed_dc->width_internal;
size = src(U8 *) + gr.zoomed_dc->height * gr.zoomed_dc->width_internal;
}
POPFD
dst = text.raw_screen;
while (src < size) // draw 4 pixels at a time
while (src < size) // draw 8 pixels at a time
{
src64val = *(src(U64 *));
a = src64val & 0xFF;
b = (src64val >>= 8) & 0xFF;
c = (src64val >>= 8) & 0xFF;
d = (src64val >>= 8) & 0xFF;
src += 4;
*dst++ = gr_palette[a] | gr_palette[b] << 32;
*dst++ = gr_palette[c] | gr_palette[d] << 32;
a = (src64val >>= 8) & 0xFF;
b = (src64val >>= 8) & 0xFF;
c = (src64val >>= 8) & 0xFF;
d = (src64val >>= 8) & 0xFF;
*dst++ = gr_palette[a] | gr_palette[b] << 32;
*dst++ = gr_palette[c] | gr_palette[d] << 32;
src++;
}
GrCalcScreenUpdates;