Skip to content

GitLab

Commit 5953d527 authored by Sven Neumann's avatar Sven Neumann Committed by Sven Neumann
Browse files

spare a few CPU cycles. 

2005-04-28  Sven Neumann  <sven@gimp.org>

	* app/display/gimpdisplayshell-render.c: spare a few CPU cycles.
parent d02dd977
Hide whitespace changes
Inline Side-by-side
Showing with 88 additions and 46 deletions
ChangeLog
View file @ 5953d527
2005-04-28 Sven Neumann <sven@gimp.org>
* app/display/gimpdisplayshell-render.c: spare a few CPU cycles.
2005-04-27 Sven Neumann <sven@gimp.org>
* app/base/tile-manager.c (tile_manager_get_tile): removed
......
app/display/gimpdisplayshell-render.c
View file @ 5953d527
......@@ -322,6 +322,8 @@ gimp_display_shell_render (GimpDisplayShell *shell,
RenderInfo info;
GimpImageType type;
g_return_if_fail (w > 0 && h > 0);
render_image_init_info (&info, shell, x, y, w, h);
type = gimp_projection_get_image_type (shell->gdisp->gimage->projection);
......@@ -448,7 +450,7 @@ render_image_indexed (RenderInfo *info)
info->src = render_image_tile_fault (info);
for (; y < ye; y++)
while (TRUE)
{
gint error =
RINT (floor ((y + 1) / info->scaley) - floor (y / info->scaley));
......@@ -462,8 +464,6 @@ render_image_indexed (RenderInfo *info)
const guchar *src = info->src;
guchar *dest = info->dest;
g_return_if_fail (src != NULL);
for (x = info->x; x < xe; x++)
{
guint val = src[INDEXED_PIX] * 3;
......@@ -477,16 +477,22 @@ render_image_indexed (RenderInfo *info)
}
}
info->dest += info->dest_bpl;
if (++y == ye)
break;
initial = FALSE;
info->dest += info->dest_bpl;
if (error >= 1 && y + 1 < ye)
if (error)
{
info->src_y += error;
info->src = render_image_tile_fault (info);
initial = TRUE;
}
else
{
initial = FALSE;
}
}
}
......@@ -508,7 +514,7 @@ render_image_indexed_a (RenderInfo *info)
info->src = render_image_tile_fault (info);
for (; y < ye; y++)
while (TRUE)
{
gint error =
RINT (floor ((y + 1) / info->scaley) - floor (y / info->scaley));
......@@ -525,8 +531,6 @@ render_image_indexed_a (RenderInfo *info)
dark_light = (y >> check_shift) + (info->x >> check_shift);
g_return_if_fail (src != NULL);
for (x = info->x; x < xe; x++)
{
guint r, g, b, a = alpha[src[ALPHA_I_PIX]];
......@@ -557,16 +561,22 @@ render_image_indexed_a (RenderInfo *info)
}
}
info->dest += info->dest_bpl;
if (++y == ye)
break;
initial = FALSE;
info->dest += info->dest_bpl;
if (error >= 1 && y + 1 < ye)
if (error)
{
info->src_y += error;
info->src = render_image_tile_fault (info);
initial = TRUE;
}
else
{
initial = FALSE;
}
}
}
......@@ -583,7 +593,7 @@ render_image_gray (RenderInfo *info)
info->src = render_image_tile_fault (info);
for (; y < ye; y++)
while (TRUE)
{
gint error =
RINT (floor ((y + 1) / info->scaley) - floor (y / info->scaley));
......@@ -597,8 +607,6 @@ render_image_gray (RenderInfo *info)
const guchar *src = info->src;
guchar *dest = info->dest;
g_return_if_fail (src != NULL);
for (x = info->x; x < xe; x++)
{
guint val = src[GRAY_PIX];
......@@ -612,16 +620,22 @@ render_image_gray (RenderInfo *info)
}
}
info->dest += info->dest_bpl;
if (++y == ye)
break;
initial = FALSE;
info->dest += info->dest_bpl;
if (error >= 1 && y + 1 < ye)
if (error)
{
info->src_y += error;
info->src = render_image_tile_fault (info);
initial = TRUE;
}
else
{
initial = FALSE;
}
}
}
......@@ -639,7 +653,7 @@ render_image_gray_a (RenderInfo *info)
info->src = render_image_tile_fault (info);
for (; y < ye; y++)
while (TRUE)
{
gint error =
RINT (floor ((y + 1) / info->scaley) - floor (y / info->scaley));
......@@ -656,8 +670,6 @@ render_image_gray_a (RenderInfo *info)
dark_light = (y >> check_shift) + (info->x >> check_shift);
g_return_if_fail (src != NULL);
for (x = info->x; x < xe; x++)
{
guint a = alpha[src[ALPHA_G_PIX]];
......@@ -680,16 +692,22 @@ render_image_gray_a (RenderInfo *info)
}
}
info->dest += info->dest_bpl;
if (++y == ye)
break;
initial = FALSE;
info->dest += info->dest_bpl;
if (error >= 1 && y + 1 < ye)
if (error)
{
info->src_y += error;
info->src = render_image_tile_fault (info);
initial = TRUE;
}
else
{
initial = FALSE;
}
}
}
......@@ -706,7 +724,7 @@ render_image_rgb (RenderInfo *info)
info->src = render_image_tile_fault (info);
for (; y < ye; y++)
while (TRUE)
{
gint error =
RINT (floor ((y + 1) / info->scaley) - floor (y / info->scaley));
......@@ -717,21 +735,25 @@ render_image_rgb (RenderInfo *info)
}
else
{
g_return_if_fail (info->src != NULL);
memcpy (info->dest, info->src, 3 * info->w);
}
info->dest += info->dest_bpl;
if (++y == ye)
break;
initial = FALSE;
info->dest += info->dest_bpl;
if (error >= 1 && y + 1 < ye)
if (error && y + 1 < ye)
{
info->src_y += error;
info->src = render_image_tile_fault (info);
initial = TRUE;
}
else
{
initial = FALSE;
}
}
}
......@@ -749,7 +771,7 @@ render_image_rgb_a (RenderInfo *info)
info->src = render_image_tile_fault (info);
for (; y < ye; y++)
while (TRUE)
{
gint error =
RINT (floor ((y + 1) / info->scaley) - floor (y / info->scaley));
......@@ -766,8 +788,6 @@ render_image_rgb_a (RenderInfo *info)
dark_light = (y >> check_shift) + (info->x >> check_shift);
g_return_if_fail (src != NULL);
for (x = info->x; x < xe; x++)
{
guint r, g, b, a = alpha[src[ALPHA_PIX]];
......@@ -797,16 +817,22 @@ render_image_rgb_a (RenderInfo *info)
}
}
info->dest += info->dest_bpl;
if (++y == ye)
break;
initial = FALSE;
info->dest += info->dest_bpl;
if (error >= 1 && y + 1 < ye)
if (error)
{
info->src_y += error;
info->src = render_image_tile_fault (info);
initial = TRUE;
}
else
{
initial = FALSE;
}
}
}
......@@ -892,23 +918,23 @@ static guchar *
render_image_tile_fault (RenderInfo *info)
{
Tile *tile;
const guchar *data;
const guchar *src;
const guchar *scale;
guchar *dest;
gint width;
gint tilex;
gint step;
gint bpp = info->src_bpp;
gint x, b;
gint x;
tile = tile_manager_get_tile (info->src_tiles,
info->src_x, info->src_y, TRUE, FALSE);
g_return_val_if_fail (tile != NULL, tile_buf);
data = tile_data_pointer (tile,
info->src_x % TILE_WIDTH,
info->src_y % TILE_HEIGHT);
src = tile_data_pointer (tile,
info->src_x % TILE_WIDTH,
info->src_y % TILE_HEIGHT);
scale = info->scale;
dest = tile_buf;
......@@ -917,17 +943,28 @@ render_image_tile_fault (RenderInfo *info)
tilex = info->src_x / TILE_WIDTH;
while (width--)
do
{
for (b = 0; b < bpp; b++)
*dest++ = data[b];
const guchar *s = src;
switch (bpp)
{
case 4:
*dest++ = *s++;
case 3:
*dest++ = *s++;
case 2:
*dest++ = *s++;
case 1:
*dest++ = *s++;
}
step = *scale++;
if (step != 0)
{
x += step;
data += step * bpp;
src += step * bpp;
if ((x >> tile_shift) != tilex)
{
......@@ -939,12 +976,13 @@ render_image_tile_fault (RenderInfo *info)
g_return_val_if_fail (tile != NULL, tile_buf);
data = tile_data_pointer (tile,
src = tile_data_pointer (tile,
x % TILE_WIDTH,
info->src_y % TILE_HEIGHT);
}
}
}
while (--width);
tile_release (tile, FALSE);
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment