Commit graph

19 commits

Author SHA1 Message Date
Thomas Martitz
bd67f3dc6b bitmap drawing: Support alpha blend if image over the framebuffer contents.
If DRMODE_FG now the alpha channel in bitmaps can be used to draw the bitmap
over the framebuffer, so that e.g. a line selector isn't cleared for
for transparent bitmap pixels.

Change-Id: I09d59a09d2f3c90450a0fe2b83c6c59d757b686b
2013-02-12 10:37:13 +01:00
Thomas Martitz
68d3ce2acd bitmap drawing: use temp vars to help gcc opmize loops.
By saving current_vp fields into temp vars just before the loop gcc can
put them into registers. This yields ~15% speedup for drawing anti-aliased fonts.

Change-Id: I4c0c9f5ff7a7f084e2eb08c4ed874176b1f9832c
2013-02-12 10:34:49 +01:00
Thomas Martitz
1430b07894 bitmap drawing: Use extra bit in mask to avoid nested if() in switch-cases.
Speeds up alpha bitmap drawing by up to 10%. mono bitmap drawing is also a tiny bit faster.

Change-Id: I5a9379740c1a0091de9c621aabbe57d767ce2905
2013-02-12 10:34:48 +01:00
Thomas Martitz
ca634a0ac0 bitmap drawing: Negate alpha channel to match alpha information format of font files.
The comment about the format was actually incorrect. The alpha information
is now negated during conversion to native format, according to the
corrected comment.

Change-Id: Ifdb9ffdf9b55e39e64983eec2d9d60339e570bd9
2013-02-12 10:29:25 +01:00
Michael Sevakis
0bda1e1504 Fix a drawing bug where rectangles stop drawing too early.
As far as I can say only one file is affected. The loops needs to
go one more time since the end pointer is on the last pixel, not
beyond it.

Change-Id: Ie629138f8399b927bef7bad3847ef42db37e2fed
2012-05-19 06:05:47 -04:00
Thomas Martitz
04cd1fd99b Remove left-over debug statement (oops).
Change-Id: Ic672ad77bd9e30285f4bd95275a170f8ec75869b
2012-03-20 23:08:37 +01:00
Thomas Martitz
1f83d2c6d2 lcd_fillrect(): Unify 16bit implementations (move to 16bit-common.c)
Change-Id: I457ea9fcb67869fdac7f1201a059a362b087e908
2012-03-20 23:04:43 +01:00
Thomas Martitz
bae2470758 Refactor lcd_clear_viewport().
* Unify 16bit implementaitons (move to 16bit-common.c).
* Add viewport clipping (within #ifdef HAVE_VIEWPORT_CLIP) like other lcd_* functions have.

Change-Id: I4e96b2efdb94d2f7bc5bcdb710554117989579ec
2012-03-20 22:42:31 +01:00
Jonathan Gordon
b37e6bc8c1 lcd drivers: Convert lcd_[remote_]framebuffer to a pointer
Change all lcd drivers to using a pointer to the static framebuffer
instead of directly accessing the static array. This will let us
later do fun things like dynamic framebuffer sizes (RaaA) or
ability to use different buffers for different layers (dynamic
skin backdrops!)

Change-Id: I0a4d58a9d7b55e6c932131b929e5d4c9f9414b06
2012-02-28 11:44:59 +11:00
Thomas Martitz
de1bcfa24f Fix incomplete comment.
Change-Id: I1874b4e64b3ae19689a0230f10ea623a4d0d1dea
2012-01-22 22:45:10 +01:00
Michael Sevakis
302937e586 Coldfire: Fix alpha bitmap drawing from messing up the emac status register.
It failed to restore macsr to the expected default (FRAC/SAT) which caused DSP
functions like tone control filter calculation to fail (resulting in noise).
The FFT plugin was also affected.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31589 a1c6a512-1295-4272-9138-f99709370657
2012-01-05 23:00:14 +00:00
Rafaël Carré
07cfc30e50 lcd_blit_yuv(): don't use weak attribute when building for windows
current gcc/binutils don't support weak attribute correctly
see http://sourceware.org/bugzilla/show_bug.cgi?id=9687

fix FS#12427

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31193 a1c6a512-1295-4272-9138-f99709370657
2011-12-09 20:56:40 +00:00
Rafaël Carré
6b5dff4c7b lcd-16bit: move lcd_bitmap and lcd_bitmap_transparent to common code
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31131 a1c6a512-1295-4272-9138-f99709370657
2011-12-03 22:39:08 +00:00
Rafaël Carré
26851eaaa9 lcd-16bit: move common code to lcd-16bit-common.c
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31130 a1c6a512-1295-4272-9138-f99709370657
2011-12-03 22:19:17 +00:00
Rafaël Carré
1414e83743 lcd_blit_yuv: move to lcd-16bit-common.c
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31129 a1c6a512-1295-4272-9138-f99709370657
2011-12-03 21:48:34 +00:00
Thomas Martitz
312b2a2de7 Document the internal alpha channel format better, and fixes for 32bit alpha bitmaps.
For images, rows need to be even (this is not true for anti-aliased font files).
Fix stride and size calculation. This makes images that have odd pixel rows display properly and fixes buffer overflows.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30966 a1c6a512-1295-4272-9138-f99709370657
2011-11-11 19:05:11 +00:00
Thomas Martitz
f443e7bbf7 Support for transparency in 32bit bitmaps on color targets.
This uses the alpha blending capabilities introduced with anti-aliased fonts
to draw bitmaps with transparency information. The bmp loader is extended to read
this information (pass FORMAT_TRANSPARENT in format). The alpha information will
be used when drawing the bitmap.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30937 a1c6a512-1295-4272-9138-f99709370657
2011-11-08 21:36:49 +00:00
Thomas Martitz
13209604c1 Add new lcd_bmp and lcd_bmp_part APIs.
This new APIs wrap around lcd_[mono|transparent]_bitmap/_part calls and
handle all kinds bitmaps. The intended use is to draw bitmaps that
come from read_bmp_fd/_file.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30936 a1c6a512-1295-4272-9138-f99709370657
2011-11-08 21:34:46 +00:00
Thomas Martitz
cbf889d3e2 Merge lcd_{alpha,mono}_bitmap_part() for both lcd-16bit. Add small loop optimizations too.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29541 a1c6a512-1295-4272-9138-f99709370657
2011-03-08 17:11:56 +00:00