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blender-archive/source/blender/imbuf
Sergey Sharybin 07580e71a6 Fix issue with bright frames appearing in clip editor when compositor is open.
Allocate float buffer outside of image buffer,
so work-in-progress color space conversion doesn't
interfere with other parts of blender.

Covers most of cases -- since image buffer wouldn't
have partially-update float buffer all the rest
areas would be happy.

However, if there're places which updates float
buffer from byte buffer, it's still possible
some WIP color space conversion is displayed on
the screen.

But what a heck someone will do such a crappy
conversion anyway!
2013-04-11 14:15:52 +00:00
..
2013-03-26 07:29:01 +00:00
2013-03-20 17:03:20 +00:00
2013-01-08 01:48:14 +00:00

The following 4 steps to adding a new image format to blender, its
probably easiest to look at the png code for a clean clear example,
animation formats are a bit more complicated but very similar:

Step 1:
create a new file named after the format for example lets say we were
creating an openexr read/writer  use openexr.c
It should contain functions to match the following prototypes:

struct ImBuf *imb_loadopenexr(unsigned char *mem,int size,int flags);
/* Use one of the following depending on whats easyer for your file format */
short imb_saveopenexr(struct ImBuf *ibuf, FILE myfile, int flags);
short imb_saveopenexr(struct ImBuf *ibuf, char *myfile, int flags);

/* Used to test if its the correct format
int IMB_is_openexr(void *buf);

Step 2: 
Add your hooks to read and write the image format these go in
	writeimage.c and readimage.c  just look at how the others are done

Step 3: 
Add in IS_openexr to blender/source/blender/imbuf/IMB_imbuf_types.h
Add in R_openexr to source/blender/makesdna/DNA_scene_types.h

Step 4:
Add your hooks to the gui.
source/blender/src/buttons_scene.c
source/blender/src/toets.c
source/blender/src/writeimage.c

Step 5:
edit the following files:
blender/source/blender/imbuf/intern/util.c
blender/source/blender/src/filesel.c
blender/source/blender/src/screendump.c
and add your extension so that your format gets recognized in the thumbnails.

Step 6: 
Alter the build process:
For scons you need to edit blender/source/blender/imbuf/SConscript 
and add in your additional files to source_files.
For msvp you need to edit blender/projectfiles/blender/imbuf/BL_imbuf.dsp
and add in your additional files.
If you have any external library info you will also need to add that 
to the various build processes.

Step 7:
Its also good to add your image format to:
makepicstring in blender/source/blender/blenkernel/intern/image.c