diff options
author | Sergey Sharybin <sergey.vfx@gmail.com> | 2012-09-15 14:05:07 +0400 |
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committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2012-09-15 14:05:07 +0400 |
commit | a73dd3476e7d180d3320afc04d218ce22f2f3bfc (patch) | |
tree | a540f5657bc9e8692eb0d3417de71393bad6bece /source/blender/blenloader | |
parent | b93da9b01e163158a830872d29f8bd874f63d54d (diff) |
Color Management, Stage 2: Switch color pipeline to use OpenColorIO
Replace old color pipeline which was supporting linear/sRGB color spaces
only with OpenColorIO-based pipeline.
This introduces two configurable color spaces:
- Input color space for images and movie clips. This space is used to convert
images/movies from color space in which file is saved to Blender's linear
space (for float images, byte images are not internally converted, only input
space is stored for such images and used later).
This setting could be found in image/clip data block settings.
- Display color space which defines space in which particular display is working.
This settings could be found in scene's Color Management panel.
When render result is being displayed on the screen, apart from converting image
to display space, some additional conversions could happen.
This conversions are:
- View, which defines tone curve applying before display transformation.
These are different ways to view the image on the same display device.
For example it could be used to emulate film view on sRGB display.
- Exposure affects on image exposure before tone map is applied.
- Gamma is post-display gamma correction, could be used to match particular
display gamma.
- RGB curves are user-defined curves which are applying before display
transformation, could be used for different purposes.
All this settings by default are only applying on render result and does not
affect on other images. If some particular image needs to be affected by this
transformation, "View as Render" setting of image data block should be set to
truth. Movie clips are always affected by all display transformations.
This commit also introduces configurable color space in which sequencer is
working. This setting could be found in scene's Color Management panel and
it should be used if such stuff as grading needs to be done in color space
different from sRGB (i.e. when Film view on sRGB display is use, using VD16
space as sequencer's internal space would make grading working in space
which is close to the space using for display).
Some technical notes:
- Image buffer's float buffer is now always in linear space, even if it was
created from 16bit byte images.
- Space of byte buffer is stored in image buffer's rect_colorspace property.
- Profile of image buffer was removed since it's not longer meaningful.
- OpenGL and GLSL is supposed to always work in sRGB space. It is possible
to support other spaces, but it's quite large project which isn't so
much important.
- Legacy Color Management option disabled is emulated by using None display.
It could have some regressions, but there's no clear way to avoid them.
- If OpenColorIO is disabled on build time, it should make blender behaving
in the same way as previous release with color management enabled.
More details could be found at this page (more details would be added soon):
http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.64/Color_Management
--
Thanks to Xavier Thomas, Lukas Toene for initial work on OpenColorIO
integration and to Brecht van Lommel for some further development and code/
usecase review!
Diffstat (limited to 'source/blender/blenloader')
-rw-r--r-- | source/blender/blenloader/intern/readfile.c | 58 | ||||
-rw-r--r-- | source/blender/blenloader/intern/writefile.c | 11 |
2 files changed, 68 insertions, 1 deletions
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c index a7f8026ad5d..c6483442b00 100644 --- a/source/blender/blenloader/intern/readfile.c +++ b/source/blender/blenloader/intern/readfile.c @@ -4900,6 +4900,14 @@ static void direct_link_sequence_modifiers(FileData *fd, ListBase *lb) } } +static void direct_link_view_settings(FileData *fd, ColorManagedViewSettings *view_settings) +{ + view_settings->curve_mapping = newdataadr(fd, view_settings->curve_mapping); + + if (view_settings->curve_mapping) + direct_link_curvemapping(fd, view_settings->curve_mapping); +} + static void direct_link_scene(FileData *fd, Scene *sce) { Editing *ed; @@ -5077,6 +5085,8 @@ static void direct_link_scene(FileData *fd, Scene *sce) sce->nodetree = newdataadr(fd, sce->nodetree); if (sce->nodetree) direct_link_nodetree(fd, sce->nodetree); + + direct_link_view_settings(fd, &sce->view_settings); } /* ************ READ WM ***************** */ @@ -5290,6 +5300,13 @@ static void lib_link_screen(FileData *fd, Main *main) * so fingers crossed this works fine! */ sseq->gpd = newlibadr_us(fd, sc->id.lib, sseq->gpd); + + sseq->scopes.reference_ibuf = NULL; + sseq->scopes.zebra_ibuf = NULL; + sseq->scopes.waveform_ibuf = NULL; + sseq->scopes.sep_waveform_ibuf = NULL; + sseq->scopes.vector_ibuf = NULL; + sseq->scopes.histogram_ibuf = NULL; } else if (sl->spacetype == SPACE_NLA) { SpaceNla *snla= (SpaceNla *)sl; @@ -7902,6 +7919,47 @@ static void do_versions(FileData *fd, Library *lib, Main *main) } } + /* color management pipeline changes compatibility code */ + if (main->versionfile < 263 || (main->versionfile == 263 && main->subversionfile < 19)) { + Scene *scene; + Image *ima; + int colormanagement_disabled = FALSE; + + /* make scenes which are not using color management have got None as display device, + * so they wouldn't perform linear-to-sRGB conversion on display + */ + for (scene = main->scene.first; scene; scene = scene->id.next) { + if ((scene->r.color_mgt_flag & R_COLOR_MANAGEMENT) == 0) { + ColorManagedDisplaySettings *display_settings = &scene->display_settings; + + if (display_settings->display_device[0] == 0) { + BKE_scene_disable_color_management(scene); + + } + + colormanagement_disabled = TRUE; + } + } + + for (ima = main->image.first; ima; ima = ima->id.next) { + if (ima->source == IMA_SRC_VIEWER) { + ima->flag |= IMA_VIEW_AS_RENDER; + } + else if (colormanagement_disabled) { + /* if colormanagement not used, set image's color space to raw, so no sRGB->linear conversion + * would happen on display and render + * there's no clear way to check whether color management is enabled or not in render engine + * so set all images to raw if there's at least one scene with color management disabled + * this would still behave incorrect in cases when color management was used for only some + * of scenes, but such a setup is crazy anyway and think it's fair enough to break compatibility + * in that cases + */ + + BLI_strncpy(ima->colorspace_settings.name, "Raw", sizeof(ima->colorspace_settings.name)); + } + } + } + /* WATCH IT!!!: pointers from libdata have not been converted yet here! */ /* WATCH IT 2!: Userdef struct init has to be in editors/interface/resources.c! */ diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c index 109a844352f..b8d63b3c5d5 100644 --- a/source/blender/blenloader/intern/writefile.c +++ b/source/blender/blenloader/intern/writefile.c @@ -2119,6 +2119,13 @@ static void write_sequence_modifiers(WriteData *wd, ListBase *modbase) } } +static void write_view_settings(WriteData *wd, ColorManagedViewSettings *view_settings) +{ + if (view_settings->curve_mapping) { + write_curvemapping(wd, view_settings->curve_mapping); + } +} + static void write_scenes(WriteData *wd, ListBase *scebase) { Scene *sce; @@ -2261,7 +2268,9 @@ static void write_scenes(WriteData *wd, ListBase *scebase) writestruct(wd, DATA, "bNodeTree", 1, sce->nodetree); write_nodetree(wd, sce->nodetree); } - + + write_view_settings(wd, &sce->view_settings); + sce= sce->id.next; } /* flush helps the compression for undo-save */ |