forked from len0rd/rockbox
Add optional viewport clipping, can be enabled with HAVE_VIEWPORT_CLIP. A simulator check is also added to set_viewport that will show an error/note when DEBUGF is enabled.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23551 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun
parent
b1783c3c64
commit
765ff0130a
8 changed files with 1100 additions and 174 deletions
|
|
@ -89,6 +89,28 @@ void lcd_set_viewport(struct viewport* vp)
|
|||
|
||||
fg_pattern = 0x55 * (~current_vp->fg_pattern & 3);
|
||||
bg_pattern = 0x55 * (~current_vp->bg_pattern & 3);
|
||||
|
||||
#if defined(SIMULATOR)
|
||||
/* Force the viewport to be within bounds. If this happens it should
|
||||
* be considered an error - the viewport will not draw as it might be
|
||||
* expected.
|
||||
*/
|
||||
if((unsigned) current_vp->x > (unsigned) LCD_WIDTH
|
||||
|| (unsigned) current_vp->y > (unsigned) LCD_HEIGHT
|
||||
|| current_vp->x + current_vp->width > LCD_WIDTH
|
||||
|| current_vp->y + current_vp->height > LCD_HEIGHT)
|
||||
{
|
||||
#if !defined(HAVE_VIEWPORT_CLIP)
|
||||
DEBUGF("ERROR: "
|
||||
#else
|
||||
DEBUGF("NOTE: "
|
||||
#endif
|
||||
"set_viewport out of bounds: x: %d y: %d width: %d height:%d\n",
|
||||
current_vp->x, current_vp->y,
|
||||
current_vp->width, current_vp->height);
|
||||
}
|
||||
|
||||
#endif
|
||||
}
|
||||
|
||||
void lcd_update_viewport(void)
|
||||
|
|
@ -418,8 +440,13 @@ void lcd_clear_viewport(void)
|
|||
/* Set a single pixel */
|
||||
void lcd_drawpixel(int x, int y)
|
||||
{
|
||||
if (((unsigned)x < (unsigned)current_vp->width) &&
|
||||
((unsigned)y < (unsigned)current_vp->height))
|
||||
if ( ((unsigned)x < (unsigned)current_vp->width)
|
||||
&& ((unsigned)y < (unsigned)current_vp->height)
|
||||
#if defined(HAVE_VIEWPORT_CLIP)
|
||||
&& ((unsigned)x < (unsigned)LCD_WIDTH)
|
||||
&& ((unsigned)y < (unsigned)LCD_HEIGHT)
|
||||
#endif
|
||||
)
|
||||
lcd_pixelfuncs[current_vp->drawmode](current_vp->x + x, current_vp->y + y);
|
||||
}
|
||||
|
||||
|
|
@ -488,8 +515,13 @@ void lcd_drawline(int x1, int y1, int x2, int y2)
|
|||
|
||||
for (i = 0; i < numpixels; i++)
|
||||
{
|
||||
if (((unsigned)x < (unsigned)current_vp->width) &&
|
||||
((unsigned)y < (unsigned)current_vp->height))
|
||||
if ( ((unsigned)x < (unsigned)current_vp->width)
|
||||
&& ((unsigned)y < (unsigned)current_vp->height)
|
||||
#if defined(HAVE_VIEWPORT_CLIP)
|
||||
&& ((unsigned)x < (unsigned)LCD_WIDTH)
|
||||
&& ((unsigned)y < (unsigned)LCD_HEIGHT)
|
||||
#endif
|
||||
)
|
||||
pfunc(current_vp->x + x, current_vp->y + y);
|
||||
|
||||
if (d < 0)
|
||||
|
|
@ -524,23 +556,38 @@ void lcd_hline(int x1, int x2, int y)
|
|||
x2 = x;
|
||||
}
|
||||
|
||||
/******************** In viewport clipping **********************/
|
||||
/* nothing to draw? */
|
||||
if (((unsigned)y >= (unsigned)current_vp->height) || (x1 >= current_vp->width)
|
||||
|| (x2 < 0))
|
||||
return;
|
||||
|
||||
if (x1 < 0)
|
||||
x1 = 0;
|
||||
if (x2 >= current_vp->width)
|
||||
x2 = current_vp->width-1;
|
||||
|
||||
/* adjust x1 and y to viewport */
|
||||
x1 += current_vp->x;
|
||||
x2 += current_vp->x;
|
||||
y += current_vp->y;
|
||||
|
||||
#if defined(HAVE_VIEWPORT_CLIP)
|
||||
/********************* Viewport on screen clipping ********************/
|
||||
/* nothing to draw? */
|
||||
if (((unsigned)y >= (unsigned) LCD_HEIGHT) || (x1 >= LCD_WIDTH)
|
||||
|| (x2 < 0))
|
||||
return;
|
||||
|
||||
/* clipping */
|
||||
if (x1 < 0)
|
||||
x1 = 0;
|
||||
if (x2 >= current_vp->width)
|
||||
x2 = current_vp->width-1;
|
||||
if (x2 >= LCD_WIDTH)
|
||||
x2 = LCD_WIDTH-1;
|
||||
#endif
|
||||
|
||||
width = x2 - x1 + 1;
|
||||
|
||||
/* adjust x1 and y to viewport */
|
||||
x1 += current_vp->x;
|
||||
y += current_vp->y;
|
||||
|
||||
bfunc = lcd_blockfuncs[current_vp->drawmode];
|
||||
dst = &lcd_framebuffer[y>>2][x1];
|
||||
mask = pixmask[y & 3];
|
||||
|
|
@ -567,12 +614,12 @@ void lcd_vline(int x, int y1, int y2)
|
|||
y2 = ny;
|
||||
}
|
||||
|
||||
/******************** In viewport clipping **********************/
|
||||
/* nothing to draw? */
|
||||
if (((unsigned)x >= (unsigned)current_vp->width) || (y1 >= current_vp->height)
|
||||
|| (y2 < 0))
|
||||
return;
|
||||
|
||||
/* clipping */
|
||||
|
||||
if (y1 < 0)
|
||||
y1 = 0;
|
||||
if (y2 >= current_vp->height)
|
||||
|
|
@ -582,6 +629,20 @@ void lcd_vline(int x, int y1, int y2)
|
|||
y1 += current_vp->y;
|
||||
y2 += current_vp->y;
|
||||
x += current_vp->x;
|
||||
|
||||
#if defined(HAVE_VIEWPORT_CLIP)
|
||||
/********************* Viewport on screen clipping ********************/
|
||||
/* nothing to draw? */
|
||||
if (( (unsigned) x >= (unsigned)LCD_WIDTH) || (y1 >= LCD_HEIGHT)
|
||||
|| (y2 < 0))
|
||||
return;
|
||||
|
||||
/* clipping */
|
||||
if (y1 < 0)
|
||||
y1 = 0;
|
||||
if (y2 >= LCD_HEIGHT)
|
||||
y2 = LCD_HEIGHT-1;
|
||||
#endif
|
||||
|
||||
bfunc = lcd_blockfuncs[current_vp->drawmode];
|
||||
dst = &lcd_framebuffer[y1>>2][x];
|
||||
|
|
@ -624,12 +685,12 @@ void lcd_fillrect(int x, int y, int width, int height)
|
|||
lcd_blockfunc_type *bfunc;
|
||||
bool fillopt = false;
|
||||
|
||||
/******************** In viewport clipping **********************/
|
||||
/* nothing to draw? */
|
||||
if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
|
||||
|| (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
|
||||
return;
|
||||
|
||||
/* clipping */
|
||||
if (x < 0)
|
||||
{
|
||||
width += x;
|
||||
|
|
@ -648,6 +709,30 @@ void lcd_fillrect(int x, int y, int width, int height)
|
|||
/* adjust for viewport */
|
||||
x += current_vp->x;
|
||||
y += current_vp->y;
|
||||
|
||||
#if defined(HAVE_VIEWPORT_CLIP)
|
||||
/********************* Viewport on screen clipping ********************/
|
||||
/* nothing to draw? */
|
||||
if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
||||
|| (x + width <= 0) || (y + height <= 0))
|
||||
return;
|
||||
|
||||
/* clip image in viewport in screen */
|
||||
if (x < 0)
|
||||
{
|
||||
width += x;
|
||||
x = 0;
|
||||
}
|
||||
if (y < 0)
|
||||
{
|
||||
height += y;
|
||||
y = 0;
|
||||
}
|
||||
if (x + width > LCD_WIDTH)
|
||||
width = LCD_WIDTH - x;
|
||||
if (y + height > LCD_HEIGHT)
|
||||
height = LCD_HEIGHT - y;
|
||||
#endif
|
||||
|
||||
if (current_vp->drawmode & DRMODE_INVERSEVID)
|
||||
{
|
||||
|
|
@ -722,12 +807,12 @@ void ICODE_ATTR lcd_mono_bitmap_part(const unsigned char *src, int src_x,
|
|||
unsigned mask, mask_bottom;
|
||||
lcd_blockfunc_type *bfunc;
|
||||
|
||||
/******************** Image in viewport clipping **********************/
|
||||
/* nothing to draw? */
|
||||
if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
|
||||
(y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
|
||||
return;
|
||||
|
||||
/* clipping */
|
||||
|
||||
if (x < 0)
|
||||
{
|
||||
width += x;
|
||||
|
|
@ -748,6 +833,32 @@ void ICODE_ATTR lcd_mono_bitmap_part(const unsigned char *src, int src_x,
|
|||
/* adjust for viewport */
|
||||
x += current_vp->x;
|
||||
y += current_vp->y;
|
||||
|
||||
#if defined(HAVE_VIEWPORT_CLIP)
|
||||
/********************* Viewport on screen clipping ********************/
|
||||
/* nothing to draw? */
|
||||
if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
||||
|| (x + width <= 0) || (y + height <= 0))
|
||||
return;
|
||||
|
||||
/* clip image in viewport in screen */
|
||||
if (x < 0)
|
||||
{
|
||||
width += x;
|
||||
src_x -= x;
|
||||
x = 0;
|
||||
}
|
||||
if (y < 0)
|
||||
{
|
||||
height += y;
|
||||
src_y -= y;
|
||||
y = 0;
|
||||
}
|
||||
if (x + width > LCD_WIDTH)
|
||||
width = LCD_WIDTH - x;
|
||||
if (y + height > LCD_HEIGHT)
|
||||
height = LCD_HEIGHT - y;
|
||||
#endif
|
||||
|
||||
src += stride * (src_y >> 3) + src_x; /* move starting point */
|
||||
src_y &= 7;
|
||||
|
|
@ -893,12 +1004,12 @@ void ICODE_ATTR lcd_bitmap_part(const fb_data *src, int src_x, int src_y,
|
|||
fb_data *dst, *dst_end;
|
||||
unsigned mask, mask_bottom;
|
||||
|
||||
/******************** Image in viewport clipping **********************/
|
||||
/* nothing to draw? */
|
||||
if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
|
||||
|| (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
|
||||
return;
|
||||
|
||||
/* clipping */
|
||||
if (x < 0)
|
||||
{
|
||||
width += x;
|
||||
|
|
@ -919,6 +1030,32 @@ void ICODE_ATTR lcd_bitmap_part(const fb_data *src, int src_x, int src_y,
|
|||
/* adjust for viewport */
|
||||
x += current_vp->x;
|
||||
y += current_vp->y;
|
||||
|
||||
#if defined(HAVE_VIEWPORT_CLIP)
|
||||
/********************* Viewport on screen clipping ********************/
|
||||
/* nothing to draw? */
|
||||
if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
||||
|| (x + width <= 0) || (y + height <= 0))
|
||||
return;
|
||||
|
||||
/* clip image in viewport in screen */
|
||||
if (x < 0)
|
||||
{
|
||||
width += x;
|
||||
src_x -= x;
|
||||
x = 0;
|
||||
}
|
||||
if (y < 0)
|
||||
{
|
||||
height += y;
|
||||
src_y -= y;
|
||||
y = 0;
|
||||
}
|
||||
if (x + width > LCD_WIDTH)
|
||||
width = LCD_WIDTH - x;
|
||||
if (y + height > LCD_HEIGHT)
|
||||
height = LCD_HEIGHT - y;
|
||||
#endif
|
||||
|
||||
src += stride * (src_y >> 2) + src_x; /* move starting point */
|
||||
src_y &= 3;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue