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accelerated software cursor drawing 11 times

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15531 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus 2005-12-13 19:28:52 +00:00
parent 040ce75726
commit 2a867ee674
1 changed files with 10 additions and 23 deletions
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33
src/servers/app/drawing/HWInterface.cpp
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@ -217,8 +217,6 @@ HWInterface::HideSoftwareCursor(const BRect& area)
fCursorAreaBackup->right,
fCursorAreaBackup->bottom);
if (area.Intersects(backupArea)) {
//printf("HideSoftwareCursor(BRect(%.1f, %.1f, %.1f, %.1f))\n", area.left, area.top, area.right, area.bottom);
//backupArea.PrintToStream();
_RestoreCursorArea();
}
}
@ -228,7 +226,6 @@ HWInterface::HideSoftwareCursor(const BRect& area)
void
HWInterface::HideSoftwareCursor()
{
//printf("HideSoftwareCursor()\n");
_RestoreCursorArea();
}
@ -237,7 +234,6 @@ void
HWInterface::ShowSoftwareCursor()
{
if (fCursorAreaBackup && fCursorAreaBackup->cursor_hidden) {
//printf("ShowSoftwareCursor()\n");
_DrawCursor(_CursorFrame());
}
}
@ -294,7 +290,6 @@ HWInterface::_DrawCursor(BRect area) const
uint8* dst = buffer;
if (fCursorAreaBackup && fCursorAreaBackup->buffer) {
//printf("backup: BRect(%ld, %ld, %ld, %ld)\n", left, top, right, bottom);
fCursorAreaBackup->cursor_hidden = false;
// remember which area the backup contains
fCursorAreaBackup->left = left;
@ -303,6 +298,7 @@ HWInterface::_DrawCursor(BRect area) const
fCursorAreaBackup->bottom = bottom;
uint8* bup = fCursorAreaBackup->buffer;
uint32 bupBPR = fCursorAreaBackup->bpr;
// blending and backup of drawing buffer
for (int32 y = top; y <= bottom; y++) {
uint8* s = src;
@ -310,18 +306,12 @@ HWInterface::_DrawCursor(BRect area) const
uint8* d = dst;
uint8* b = bup;
for (int32 x = left; x <= right; x++) {
*(uint32*)b = *(uint32*)s;
// assumes backbuffer alpha = 255
// TODO: it appears alpha in cursor is upside down
uint8 a = 255 - c[3];
b[0] = s[0];
b[1] = s[1];
b[2] = s[2];
// TODO: unnecessary?
b[3] = 255;
d[0] = (((s[0] - c[0]) * a) + (c[0] << 8)) >> 8;
d[1] = (((s[1] - c[1]) * a) + (c[1] << 8)) >> 8;
d[2] = (((s[2] - c[2]) * a) + (c[2] << 8)) >> 8;
d[3] = 255;
uint8 a = c[3];
d[0] = (((c[0] - b[0]) * a) + (b[0] << 8)) >> 8;
d[1] = (((c[1] - b[1]) * a) + (b[1] << 8)) >> 8;
d[2] = (((c[2] - b[2]) * a) + (b[2] << 8)) >> 8;
s += 4;
c += 4;
d += 4;
@ -340,12 +330,10 @@ HWInterface::_DrawCursor(BRect area) const
uint8* d = dst;
for (int32 x = left; x <= right; x++) {
// assumes backbuffer alpha = 255
// TODO: it appears alpha in cursor is upside down
uint8 a = 255 - c[3];
d[0] = (((s[0] - c[0]) * a) + (c[0] << 8)) >> 8;
d[1] = (((s[1] - c[1]) * a) + (c[1] << 8)) >> 8;
d[2] = (((s[2] - c[2]) * a) + (c[2] << 8)) >> 8;
d[3] = 255;
uint8 a = c[3];
d[0] = (((c[0] - s[0]) * a) + (s[0] << 8)) >> 8;
d[1] = (((c[1] - s[1]) * a) + (s[1] << 8)) >> 8;
d[2] = (((c[2] - s[2]) * a) + (s[2] << 8)) >> 8;
s += 4;
c += 4;
d += 4;
@ -614,7 +602,6 @@ void
HWInterface::_RestoreCursorArea() const
{
if (fCursorAreaBackup && !fCursorAreaBackup->cursor_hidden) {
//printf("restore\n");
_CopyToFront(fCursorAreaBackup->buffer,
fCursorAreaBackup->bpr,
fCursorAreaBackup->left,