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Fixed ClearWindow & few scroller tweaks

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systematic verification of ClearWindow done ...
This commit is contained in:
philippe44
2020-02-25 23:23:08 -08:00
parent a792a8cd5b
commit a9f1240965
2 changed files with 29 additions and 28 deletions
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47
components/display/core/gds.c
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@@ -60,14 +60,6 @@ void GDS_Clear( struct GDS_Device* Device, int Color ) {
}
void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2, int Color ) {
for (int y = y1; y <= y2; y++) {
for (int x = x1; x <= x2; x++) {
GDS_DrawPixelFast( Device, x, y, Color);
}
}
return;
// driver can provide own optimized clear window
if (Device->ClearWindow) {
Device->ClearWindow( Device, x1, y1, x2, y2, Color );
@@ -79,13 +71,21 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
uint8_t _Color = Color == GDS_COLOR_BLACK ? 0: 0xff;
uint8_t Width = Device->Width;
// try to do byte processing as much as possible
int c;
for (c = x1; c <= x2; c++) {
int r = y1;
while (r & 0x07 && r <= y2) GDS_DrawPixelFast( Device, c, r++, Color);
//for (; (r >> 3) < (y2 >> 3); r++) Device->Framebuffer[(r >> 3) * Width + c] = _Color;
memset(Device->Framebuffer + (r >> 3) * Width + c, _Color, (y2 - r) >> 3);
while (r <= y2) GDS_DrawPixelFast( Device, c, r++, Color);
for (int r = y1; r <= y2;) {
int c = x1;
// for a row that is not on a boundary, no optimization possible
while (r & 0x07 && r <= y2) {
for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color);
r++;
}
// go fast if we have more than 8 lines to write
if (r + 8 < y2) {
memset(Device->Framebuffer + Width * r / 8 + x1, _Color, x2 - x1 + 1);
r += 8;
} else while (r <= y2) {
for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color);
r++;
}
}
}
} if (Device->Depth == 4) {
@@ -96,20 +96,17 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
uint8_t _Color = Color | (Color << 4);
uint8_t Width = Device->Width;
// try to do byte processing as much as possible
int r;
for (r = y1; r <= y2; r++) {
for (int r = y1; r <= y2; r++) {
int c = x1;
if (c & 0x01) GDS_DrawPixelFast( Device, c++, r, Color);
//for (; (c >> 1) < (x2 >> 1); c++) Device->Framebuffer[(r * Width + c) >> 1] = _Color;
memset(Device->Framebuffer + ((r * Width +c) >> 1), _Color, (x2 - c) >> 1);
if (c < x2) GDS_DrawPixelFast( Device, c, r, Color);
int chunk = (x2 - c + 1) >> 1;
memset(Device->Framebuffer + ((r * Width + c) >> 1), _Color, chunk);
if (c + chunk <= x2) GDS_DrawPixelFast( Device, x2, r, Color);
}
}
}
} else {
int y;
for (y = y1; y <= y2; y++) {
int x;
for (x = x1; x <= x2; x++) {
for (int y = y1; y <= y2; y++) {
for (int x = x1; x <= x2; x++) {
GDS_DrawPixelFast( Device, x, y, Color);
}
}