Commit Graph

1515 Commits

Author SHA1 Message Date
Neil Roberts
39c6bf59cb texture: Handle premult conversions when getting texture data
cogl_texture_get_data uses find_best_gl_get_data_format from the
texture driver which returns the closest format to use for retrieving
pixel data given an intended format. However this function doesn't
know about the texture we are reading data from so it doesn't know
that the data we will actually receive will have the same premult
status as the texture's format. With the GL driver, this function ends
up returning exactly the same format as passed in which means it will
never do a premult conversion. Under GLES it always returns
COGL_PIXEL_FORMAT_RGBA_8888 so it will always make the data unpremult
even if the final requested format is premultiplied.

This patch fixes it so that it copies the premult status of the
closest_format from the format of the underlying texture. That way it
will later convert or not depending on the requested target format.

Note this patch breaks test-sub-texture with the GL driver because
that is incorrectly trying to read the texture data back as RGBA_8888
even though it depends on it not doing a premult conversion. The test
was already broken with GLES2 and remains broken.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-23 18:08:45 +00:00
Neil Roberts
31bd4cb22c Use GL_OES_packed_depth_stencil on GLES2
If the GL_OES_packed_depth_stencil extension is available then we can
try creating a combined depth-stencil buffer with the
GL_DEPTH24_STENCIL8 format. This adds a private flag for the feature.

https://bugzilla.gnome.org/show_bug.cgi?id=666184

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-22 17:17:50 +00:00
Neil Roberts
b52d24c933 Check for GL_EXT_packed_depth_stencil
The GL_DEPTH_STENCIL format for renderbuffers is defined in a separate
extension from GL_EXT_framebuffer_object so we probably shouldn't
being trying to use it unless that extension is advertised. This just
replaces the check for whether the driver is GL for a check for a
private feature flag before trying GL_DEPTH_STENCIL. The private
feature flag is set if the extension is available on GL.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-22 17:17:50 +00:00
Neil Roberts
d3e6f2bc83 cogl-attribute: Fix binding an attribute to cogl_tex_coord_in
If an application tries to bind an attribute to cogl_tex_coord_in then
on GLES2 it would try to directly use that as the name of the GL
attribute. However in the generated shader that is actually #defined
to cogl_tex_coord0_in so we need to remap the name. This adds a
parameter to validate_cogl_attribute_name so that it can optionally
return a real_attribute_name. If it doesn't set this then the calling
function will default to the Cogl attribute name.

This fixes test-texture-3d with the GLES2 driver.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-22 17:17:50 +00:00
Chun-wei Fan
2fdb7fc743 cogl-pipeline-payer-state.c: Include cogl-texture-private.h
Needed for _cogl_texture_get_type so that C4013 warnings/implicit
declaration of ... warnings can be avoided.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-22 21:32:52 +08:00
Chun-wei Fan
4eb923a68b Another update to cogl.symbols
The previous update missed renames of certain cogl_framebuffer_* functions
to cogl_onscreen_*, and were not updated as the glib-mkenums-generated
header no longer included experimental headers

Also, all comments in cogl.symbols are now done in C-style so that the
preprocessor will filter them out when processing cogl.symbols instead of
using ';' for commments, which could be MSVC-only

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-22 21:32:42 +08:00
Chun-wei Fan
3d8972342d Revert "Another update to cogl.symbols"
This reverts commit b70af4a104.

Sorry, I missed a comment line in this part :|
2012-02-22 21:31:42 +08:00
Chun-wei Fan
b70af4a104 Another update to cogl.symbols
The previous update missed renames of certain cogl_framebuffer_* functions
to cogl_onscreen_*, and were not updated as the glib-mkenums-generated
header no longer included experimental headers

Also, all comments in cogl.symbols are now done in C-style so that the
preprocessor will filter them out when processing cogl.symbols instead of
using ';' for commments, which could be MSVC-only
2012-02-22 21:30:48 +08:00
Chun-wei Fan
021f4f2624 Update cogl/cogl.symbols
-Make up for the missed cogl_texture_pixmap_x11_* symbols
-Removed texture_3d _EXP suffixes
-For newly-exposed public cogl_pipeline_get_layer_*_filter APIs

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-22 20:30:16 +08:00
Robert Bragg
336c330d11 cogl.h: Exclude 1.x headers if 2.0 api requested
Now if COGL_ENABLE_EXPERIMENTAL_2_0_API has been defined when including
cogl.h then headers that correspond to 1.x only apis that we plan to
drop won't be included any more.

If COGL_ENABLE_EXPERIMENTAL_API is defined then you can still mix and
match 2.0 api with 1.x api in a single compilation unit.

Note: it's still possible that some 1.x symbols will still be available
when COGL_ENABLE_EXPERIMENTAL_2_0_API is defined since this patch
doesn't go through the shared headers adding guards around deprecated
functions.

This only affects people playing with the experimental api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-21 13:26:14 +00:00
Robert Bragg
4e3f9d0fc2 tex-pixmap-x11: remove CoglHandle use + pass context
This also replaces use of CoglHandle with a CoglTexturePixmapX11 type
instead.

This patch also ensures the CoglTexturePixmapX11 constructor take an
explicit CoglContext pointer and can return a GError consistent with
other CoglTexture constructors.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-21 13:26:14 +00:00
Robert Bragg
479c5fd2c9 onscreen: move swap_buffer apis to onscreen namespace
This moves all the cogl_framebuffer_ apis relating to swap buffer
requests into the cogl_onscreen_ namespace since on CoglOnscreen
framebuffers have back buffers that can be swapped.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-21 13:26:14 +00:00
Robert Bragg
785e6375eb Adds a context arg to cogl_pipeline_new()
As we move towards Cogl 2.0 we are aiming to remove the need for a
default global CoglContext and so everything should be explicitly
related to a context somehow. CoglPipelines are top level objects and
so this patch adds a context argument to cogl_pipeline_new().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-21 12:38:24 +00:00
Robert Bragg
13c36fff0d offscreen: Replace use of CoglHandle with CoglOffscreen
This updates cogl_offscreen_new_to_texture to return a CoglOffscreen
pointer instead of a CoglHandle.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-21 12:38:10 +00:00
Robert Bragg
0a2a3d7c80 context: removes some uses of CoglHandle
There were several members of the CoglContext struct using the
CoglHandle type for things that now have replacement typedefs which
this patch fixes.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-21 12:37:55 +00:00
Robert Bragg
47868e1f3e texture-3d: remove _EXP defines + CoglHandle and pass context
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the cogl-texture-3d
api symbols.

This patch also replaces use of CoglHandle with a CoglTexture3D type
instead.

Finally this patch also ensures the CoglTexture3D constructors take an
explicit CoglContext pointer but not a CoglTextureFlags argument,
consistent with other CoglTexture constructors.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-21 12:37:44 +00:00
Robert Bragg
80ccf06b84 debug: support wireframe mode with vertex shaders
Previously for the wireframe debug mode we identified the users
"cogl_position_in" attribute, mapped that, created a replacement
attribute with a LINE_LIST topology and then drew the attribute with a
simple pipeline with a green colour. This meant we completely discarded
the users original pipeline which may have involved vertex processing
that would be useful to visualize in the wireframe.

The new approach instead keeps the users attributes and instead
generates CoglIndices that can be used to refererence the original
attributes in LINE_LIST topology and instead of scrapping the user's
pipeline we now create a weak copy of the original pipeline and just
replace the fragment processing with a snippet to force the output color
to be green.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:32:25 +00:00
Robert Bragg
1bba0f5d99 pipeline: make _equal() cost scale by n bits in differences
This improves the implementation of _cogl_pipeline_equal() to ensure
that the cost of the function scales by the number of bits set in the
pipelines_difference variable set after calling
_cogl_pipeline_compare_differences() instead of scaling by the number of
state groups cogl tracks.

As Cogl tracks more and more state groups we don't want
_cogl_pipeline_equal() to get slower.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:16:37 +00:00
Robert Bragg
ed06d0ca01 object: avoid creating a new entry for NULL data
If setting NULL user data via cogl_object_set_user_data() and we fail to
find an entry for the given key then bail out before potentially
allocating a new entry since setting NULL data is documented to
effectively delete an entry.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:16:37 +00:00
Robert Bragg
31097c0488 pipeline: Expose min/mag filter getters
This exposes cogl_pipeline_get_layer_{min,max}_filter functions so that
applications can query back the filters set using
cogl_pipeline_set_layer_filters().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:16:37 +00:00
Robert Bragg
680f63a48c Remove all internal includes of cogl.h
The cogl.h header is meant to be the public header for including the 1.x
api used by Clutter so we should stop using that as a convenient way to
include all likely prototypes and typedefs. Actually we already do a
good job of listing the specific headers we depend on in each of the .c
files we have so mostly this patch just strip out the redundant
includes for cogl.h with a few fixups where that broke the build.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Robert Bragg
cc4aa97579 Handle all formats in _cogl_texture_driver_pixel_format_to_gl
The _cogl_texture_driver_pixel_format_to_gl functions for OpenGL and
OpenGLES convert CoglPixelFormats into corresponding gl enums that can
be used to upload texture data. Previously we were only handling a few
specific formats but this patch updates the functions to handle all the
formats we know about. The functions now also switch() on the format so
that we will get build time warnings if we forget to handle new formats
in these functions.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Damien Leone
c8674ef2bc Add support for X101010 and 2101010 pixel formats to fallback OpenGL rendering
https://bugzilla.gnome.org/show_bug.cgi?id=660188

edit: tweaked the internal format returned by pixel_format_to_gl();
handled 1010102 formats and rebased -- Robert Bragg

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Damien Leone
8b70468598 Improve pixel format detection for fallback OpenGL rendering
The previous detection was based on bits per pixel only and would
consider bpp >= 24 as X888 or 8888 24-bit color depth formats.

This commit ensures we now use the newly added
_cogl_util_pixel_format_from_masks() api that returns a CoglPixelFormat
according to channel masks and color depth. This helps to add support
for more pixel formats.

https://bugzilla.gnome.org/show_bug.cgi?id=660188

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Robert Bragg
e3c4522a86 Adds a _cogl_util_pixel_format_from_masks API
This adds a utility function for inferring a CoglPixelFormat from a
set of channel masks, a bits-per-pixel value, a pixel-depth value and
pixel byte order.

This plan is to use this to improve how we map X visuals to Cogl pixel
formats.

This patch was based on some ideas from Damien Leone <dleone@nvidia.com>

https://bugzilla.gnome.org/show_bug.cgi?id=660188

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Robert Bragg
fcb8b18d39 pixel formats: Documents the internal representation
This adds a comment to cogl-types.h where we define all the
CoglPixelFormat enums to give lots of information about the internal
representation of the format and to explain how new formats should be
allocated.

This information came from the discussion in bug #660188

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Damien Leone
f3fa86b482 Add 30-bit color depth pixel formats X101010 and 2101010
30-bit color depth formats are defined by using value 13 in the least
significant nibble of the pixel format enumeration. This nibble
encodes bytes-per-pixel and byte alignment.

The _cogl_pixel_format_get_bytes_per_pixl() function is updated
accordingly to support these new formats.

https://bugzilla.gnome.org/show_bug.cgi?id=660188

edit: dropped the X101010 formats but also added 1010102 formats since
Cogl avoids exposing any padded formats and leaves it to applications to
consider the A component to be padding as needed. -- Robert Bragg

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Robert Bragg
5cdc9af18a Removes the COGL_PIXEL_FORMAT_{24,32} defines
Although these are in the public headers we should assume that no one is
using them since they were never documented so no could know what they
are useful for.

If you were to guess you'd be forgiven for thinking they were bitmasks
for checking some flags to see if a format is 24 or 32 bits. If you
looked further you might instead be forgiven for thinking that if you
masked of the least significant nibble of a pixel-format then you could
check the value against these defines. Neither of the previous
operations are reliable ways to check if a format is 24 or 32bit and
instead code must use then internal
_cogl_pixel_format_get_bytes_per_pixel() api if they want to know the
pixel size for a given format which relies on a 16 entry lookup table
using the least significant nibble of a pixel-format.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:45 +00:00
Robert Bragg
e43246fe1c Remove COGL_UNORDERED_MASK define
Although it's in a public header nothing should be using this define
since it's not documented what it could be used for. The cases where we
were using it internally were quite fragile because they were trying to
mask information from the least significant nibble of CoglPixelFormat
but really that nibble just has to be dealt with using lookup tables.
The least significant nibble of a pixel format gives information about
the bytes per pixel and whether the components are byte aligned but the
information needs to be accessed using
_cogl_pixel_format_get_byes_per_pixel() and
_cogl_pixel_format_is_endian_dependant().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Robert Bragg
a203a5e396 Remove COGL_UNPREMULT_MASK define
Since (A & ~COGL_PREMULT_BIT) is basically as readable as (A &
COGL_UNPREMULT_MASK) this patch removes the mask define. Without the
mask the code is slightly more explicit and there's less risk in error
caused by us forgetting to update the COGL_UNPREMULT_MASK if the way
CoglPixelFormat is defined evolves.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Robert Bragg
07e972505c Adds _cogl_pixel_format_is_endian_dependant api
This adds an internal utility function
_cogl_pixel_format_is_endian_dependant() that can query whether
accessing the components of a given format depends on the endianness of
the current host CPU or whether a pixel can be loaded as a word and
channels accessed using bit masking and shifting.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Robert Bragg
fbec2a5ad7 moves and renames _cogl_get_format_bpp
This moves _cogl_get_format_bpp from cogl-bitmap.c to cogl.c and renames
it to _cogl_pixel_format_get_bytes_per_pixel. This makes it clearer that
it doesn't return bits per pixel and makes the naming consistent with
other cogl api. The prototype has been moved to cogl-private.h since it
seems we should be aiming to get rid of cogl-internal.h at some point.

The patch also adds a simple gtk-doc comment since we might want to make
this api public.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Robert Bragg
e376058533 cogl-private.h: include cogl-context.h
cogl-private.h contains prototypes depending on CoglContext so
explicitly include cogl-context.h

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Robert Bragg
ee940a3d0d Move all types/prototypes from cogl.h -> cogl[1]-context.h
So we can get to the point where cogl.h is merely an aggregation of
header includes for the 1.x api this moves all the function prototypes
and type definitions into a cogl-context.h and a new cogl1-context.h.

Ideally no code internally should ever need to include cogl.h as it just
represents the public facing header for accessing the 1.x api which
should only be used by Clutter.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Robert Bragg
1022c285c6 texture-pixmap-x11.h: define __COGL_H_INSIDE__
Ideally we wouldn't have exposed cogl-texture-pixmap-x11.h as a
top level header and would have just automatically included it in cogl.h
but we already have code that assumes it can be directly included.

This ensures we define __COGL_H_INSIDE__ as a reminder that it is a top
level header in case we later need to include other cogl internal cogl
headers which would cause a build time error without this defined.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Robert Bragg
9c58d6c4e7 Clean up cogl 1.x/2.0 header separation
The cogl_public_h variable in cogl/Makefile.am was a mixture of 1.x
headers and experimental headers which meant that glib-mkenums was
processing lots of experimental api headers. This patch lists
experimental api headers under the cogl_experimental_h variable instead.
This patch also ensures we undef the COGL_ENABLE_EXPERIMENTAL_* defines
when running the gobject introspection scanner for Cogl-1.0.gir

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-20 23:12:44 +00:00
Emmanuele Bassi
3f561b1fbe Fix build on OSX
A missing include prevents Cogl from building on OSX.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-15 14:57:59 +00:00
Chun-wei Fan
2059d2dee0 Update cogl.symbols
Add cogl_pipline_set_layer_null_texture... which was just added to the COGL
API

Checked with Neil Roberts <neil@linux.intel.com> on IRC.
2012-02-15 22:50:09 +08:00
Jasper St. Pierre
e98f279712 Fix some doc issues
Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-14 20:42:10 +00:00
Neil Roberts
f84839e87c pipeline-state: Fix crash in the get_all_uniform_values function
The get_all_uniform_values function tries to walk the parent hierarchy
of pipelines to find pipelines overriding the uniforms state and then
grabs the values from the override. However it was accessing data
inside the ‘big state’ even if the pipeline didn't override the
uniforms state so it would crash if it encountered a parent pipeline
with no big state.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 18:48:17 +00:00
Neil Roberts
6ddf81c8dc Pass the sampler object to snippet hooks on the texture_hookup
The snippet hook COGL_SNIPPET_HOOK_TEXTURE_LOOKUP now gets passed an
extra variable called cogl_sampler which is the sampler attached to
this layer. For example this will be useful when implementing the blur
effect in Clutter so that it can make the texture hook for that layer
sample the texture multiple times.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:29:28 +00:00
Robert Bragg
2caf9e0f59 glsl: always emit sampler uniforms for non NULL layers
There might be custom hooks that want to sample arbitrary layers
even though they aren't referenced as part of the auto generated layer
combine code. This ensures the sampler uniforms are always output for
non-null layers so at least these can be used.

We may consider changing this later to always emit a wrapper
cogl_sampleX() function for each layer so all samples of a layer can
consistently be modified by a COGL_SNIPPET_HOOK_TEXTURE_LOOKUP hook.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-13 17:29:20 +00:00
Neil Roberts
aa9c293502 glsl: Use layer numbers not unit numbers for builtin uniforms
When generating GLSL code, the names of the builtin uniforms for the
sampler and the layer constant have been renamed to use the layer
number not the unit number. This will make it easier if we ever want
to make them public.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:15:35 +00:00
Neil Roberts
e6b3bfa41a pipeline: Use layer numbers not unit numbers in the combine strings
In a combine string the application can specify TEXTURE_? as a source
to sample from the texture attached to a particular unit. The number
specified here was being interpreted as a unit index. This is not
helpful to applications because theoretically the unit index is an
internal implementation detail so they can't reliably determine what
it is. This patch changes them to be interpreted as layer indices
instead.

To make this work the enums in CoglPipelineCombineSource are no longer
directly mapped to GLenums. Otherwise it implies a low limit on the
number of layer indices because there are only 32 reserved numbers
between GL_TEXTURE0 and GL_ACTIVE_TEXTURE.

This also fixes a bug in the ARBfp fragend where it was generating
code using the texture type of the layer doing the referencing rather
than the layer that was being referenced.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:15:35 +00:00
Neil Roberts
740bd12f2d Add a version of _cogl_pipeline_get_layer which does not create it
This adds _cogl_pipeline_get_layer_with_flags which takes a set of
flags to modify the behaviour. The only flag currently available is
one to disable creating the layer if the layer index does not already
exist.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:15:35 +00:00
Neil Roberts
fdc07c865f Add cogl_pipeline_set_layer_null_texture()
This adds a public function to replace the texture for a layer with
the default white texture. It is equivalent to calling
cogl_pipeline_set_layer_texture with NULL for the texture object
except that it also lets you choose a type for the texture. The idea
is that applications using a base pipeline to make multiple copies
that can share the generated shaders can use this function to make the
layer come into existence with the right texture type. Previously the
idiom would be to create a 1x1 dummy texture of the right type but
this ends up creating lots of redundant little textures.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:15:08 +00:00
Neil Roberts
d2a35a1e22 cogl-pipeline: Fix comparing the texture data state for NULL textures
When comparing the texture data for a pipeline layer it tries to get
the GL texture handle out of the texture object. However it's valid
for a layer to have a NULL texture object but in that case the code
would just crash. This patch fixes it to compare the texture types
when the texture object is NULL.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:10:18 +00:00
Neil Roberts
b96e6900f5 cogl-pipeline-layer: Use CoglTextureType instead of GL target enum
Instead of storing the GLenum for the target of the last used texture
for a layer it now stores the CoglTextureType instead. The state name
has been renamed to 'texture type' instead of 'texture target'.
Previously the default pipeline layer would store 0 here to represent
that there is no texture. This has been changed to store
COGL_TEXTURE_TYPE_2D instead which means that all pipeline layers
always have a valid value for the texture type. Any places that were
previously fetching the texture from a layer to determine the target
(for example when generating shaders or when enabling a particular
texture target) now use the texture type instead. This means they will
work even for layers that don't have a texture.

This also changes it so that when binding a fallback texture instead
of always using a 2D texture it will now use the default texture
corresponding to the texture type of the layer. That way when the
generated shader tries to do a texture lookup for that type of texture
it will get a valid texture object. To make this work the patch adds a
default texture for 3D textures to the context and also makes the
default rectangle texture actually be a rectangle texture instead of
using a 2D texture.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:09:34 +00:00
Neil Roberts
8012eee31f Add _cogl_texture_get_type()
This adds an internal function to get the type of the underlying
hardware texture for any CoglTexture. It can return one of three
values to represent 2D textures, 3D textures or rectangle textures.
The idea is that this can be used as a replacement for
cogl_texture_get_gl_texture when only the target is required to make
it a bit less GL-centric. The implementation adds a new virtual
function which all of the texture backends now implement.

The enum is in a public header because a later patch will want to use
it from the CoglPipeline API. We may want to consider making the
function public too later.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-13 17:02:46 +00:00
Chun-wei Fan
9b87e8602c cogl/Makefile.am: Filter out SDL winsys for Visual C++ builds
Just being a bit paranoid here, as the SDL winsys sources are dealt in the
projects as they are not built for all configurations to avoid them
included more than once in the projects, which can cause trouble.

https://bugzilla.gnome.org/show_bug.cgi?id=669785

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-13 12:22:19 +00:00
Chun-wei Fan
596ff72dc9 Update cogl.symbols
-Adapt to the removal of _EXP mangling from many of the experimental
 functions
-Adapt to newly added/replaced APIs
-_cogl_handle_atlas_texture_get_type is gone

https://bugzilla.gnome.org/show_bug.cgi?id=669785

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-13 12:22:18 +00:00
Chun-wei Fan
2c463c56b1 cogl-in-gles-core-functions.h: Remove stray ';'
There is a stray ';' which some compilers are not fond of.

https://bugzilla.gnome.org/show_bug.cgi?id=669785

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-13 12:22:18 +00:00
Chun-wei Fan
356e134ffb Win32: Update predefined cogl-defines.h's
-Add a define for COGL_HAS_GLIB_SUPPORT, the Visual C++ projects will build
 GLib support for COGL for all builds at this time, unless there is a
 significant call for the need of a COGL Visual C++ build with no
 dependency on GLib
-Pre-define COGL_SYSDEF_POLL* as listed in the default values in commit
 74974752 since Windows does not have poll.h and thus does not have special
 values for these.

https://bugzilla.gnome.org/show_bug.cgi?id=669785

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-13 12:22:17 +00:00
Robert Bragg
3ea6acc072 buffer: explicitly relate buffers to a context
All CoglBuffer constructors now take an explicit CoglContext
constructor. This is part of the on going effort to adapt to Cogl API so
it no longer depends on a global, default context.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-09 14:28:02 +00:00
Robert Bragg
269878217f debug: don't overlay wireframe
When using COGL_DEBUG=wireframe we were overlaying a wireframe of the
users geometry over the top of what was drawn for each primitive. It
seems to be more useful though that if the wireframe debug option has
been enabled then we should draw only the wireframes instead of
overlaying them.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-09 13:22:33 +00:00
Robert Bragg
b168ff8ef6 journal: use pipeline term instead of source
Since we are adapting the Cogl api to be less stateful one of the things
we no longer require is the cogl_set_source() api since a pipeline can
be explicitly passed as an argument when drawing. This means the term
"source" has been deprecated and internally we should aim to
consistently use the term "pipeline" instead. This patch updates the
journal code to use the term pipeline instead of source.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-09 13:13:07 +00:00
Robert Bragg
9a254d8292 debug: Adds COGL_DEBUG=winsys option
Although we internally had a COGL_DEBUG_WINSYS enum we weren't providing
a way to enable that via the COGL_DEBUG environment variable. This adds
a "winsys" option that can be used to enable printing of winsys debug
notes.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-09 13:10:14 +00:00
Robert Bragg
379fa8b435 display: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the display api
symbols.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-09 13:09:15 +00:00
Robert Bragg
92c3063014 framebuffer: Add cogl_framebuffer draw methods
This adds cogl_framebuffer_ apis for drawing attributes and primitives
that replace corresponding apis that depend on the default CoglContext.
This is part of the on going effort to adapt the Cogl api so it no
longer depends on a global context variable.

All the new drawing functions also take an explicit pipeline argument
since we are also aiming to avoid being a stateful api like Cairo and
OpenGL. Being stateless makes it easier for orthogonal components to
share access to the GPU. Being stateless should also minimize any
impedance miss-match for those wanting to build higher level stateless
apis on top of Cogl.

Note: none of the legacy, global state options such as
cogl_set_depth_test_enabled(), cogl_set_backface_culling_enabled() or
cogl_program_use() are supported by these new drawing apis and if set
will simply be silently ignored.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-09 13:09:15 +00:00
Neil Roberts
88f8780367 cogl-primitives: Copy across the texture coordinates if no texture
Previously when using the cogl_rectangle_* family of functions with a
pipeline that doesn't have a texture for a particular layer then
validate_tex_coords_cb would bail out immediately leaving the texture
coords for that layer uninitialised. This patch changes it so that it
bails out after copying in the texture coordinates instead. This was
causing problems for pipelines that were trying to completely generate
the texture values in a CoglSnippet because they wouldn't get any
texture coordinates.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-08 19:25:19 +00:00
Robert Bragg
15d43bb697 glx: Only call swap_buffer callbacks @ dispatch time
This ensures we don't call swap buffer notify callback functions
immediately when they are received since it could be awkward for
applications to ensure they have dropped all necessary locks if they
don't know when callbacks might be invoked.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-08 18:58:06 +00:00
Robert Bragg
0f33c942f2 kms: gracefully handle NULL save_state at cleanup
If we failed to save any crtc state then we skip trying to restore the
old state at cleanup.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-08 17:00:25 +00:00
Robert Bragg
1a638b6fd6 kms: Adds api to get at the kms file descriptor
This adds a cogl_kms_renderer_get_kms_fd() function that lets developers
access the kms file descriptor being used for controlling the kernel
mode setting.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-08 17:00:25 +00:00
Robert Bragg
6b7af18313 renderer: fix s/contraint/constraint/ typo
The recent patch to add an api for explicitly constraining how a
renderer backend is chosen had a typo which this patch fixes.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-08 17:00:25 +00:00
Robert Bragg
161fad2860 texture-2d/wayland: destroy transient EGLImages
When creating a texture from a wayland buffer we create an intermediate
EGLImage that we then create a GL texture from, but we were never
destroying that EGLImage. This patch ensures we destroy the image right
after we've created the texture so we don't leak a reference to the
underlying buffer.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-08 17:00:25 +00:00
Neil Roberts
99c651d2b4 Move the add_swap_buffers_callback functions out of the winsys
Instead of having each winsys implement its own list of callbacks the
list is now just attached directly to the CoglOnscreen using code in
cogl-onscreen.c. The winsys's can invoke this list of callbacks by
calling _cogl_onscreen_notify_swap_buffers(). All of the winsys's
would probably have a very similar implementation for this anyway and
I don't think it makes much sense to try and save the cost of a list
pointer in the CoglOnscreen struct.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-08 17:00:25 +00:00
Neil Roberts
77c3b1b905 Add cogl_primitive_get_indices()
This adds a public getter for the indices property of CoglPrimitive.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-07 15:25:36 +00:00
Neil Roberts
354e923cbf Add cogl_primitive_foreach_attribute()
This adds a public function to iterate the attributes of a
CoglPrimitive. Previously there was no way to query back the
attributes but there was methods to query back all of the other
properties.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-07 15:25:36 +00:00
Neil Roberts
146803c191 Add cogl_primitive_copy()
This adds a public function to make a copy of a primitive. The copy is
shallow which means it will share the same attributes and attribute
buffers. This could be useful for code that wants to have multiple
similar primitives with slightly modified properties.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-07 15:25:35 +00:00
Neil Roberts
55427a18a6 Make _cogl_pipeline_get_layer_texture public
There was no other way to get a pointer to the texture attached to a
pipeline layer apart from the using the CoglMaterial API but I think
this was just an oversight so we should add this in. It is already
maked in the sections file for the gtk-doc.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-07 15:25:35 +00:00
Neil Roberts
ec1bb4ce39 When internally using an FBO, check for allocation errors
Both the cogl_texture_get_data and _cogl_blit_begin implementations
will internally try to create an FBO for a texture and have fallbacks
if the FBO fails. However neither of them were catching errors when
allocating the framebuffer so the fallback wouldn't work properly.
This patch just adds an explicit call to cogl_framebuffer_allocate for
these uses and causes it to use the next fallback if it fails.

Based on a patch by Adel Gadllah.

https://bugzilla.gnome.org/show_bug.cgi?id=669368

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-07 15:13:11 +00:00
Neil Roberts
43bc0a4b0d texture: Flush the dependent journals on get_data
When calling cogl_texture_get_data we need to ensure that any
framebuffers rendering to the texture have flushed their journals.

https://bugzilla.gnome.org/show_bug.cgi?id=668913

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-31 12:01:20 +00:00
Neil Roberts
d42f1873fc framebuffer: Flush the journal on destruction
Instead of flushing the journal whenever the current framebuffer on a
context is changed it is now flushed whenever the framebuffer is about
to be destroyed instead. To do this it implements a custom unref
function which detects when there is going to be exactly one reference
on the framebuffer and then flushes its journal. The journal now
always has a reference on the framebuffer whenever it is non-empty.
That means the unref will only cause a flush if the only thing keeping
the framebuffer alive is the entries in the journal.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-27 17:23:03 +00:00
Neil Roberts
688a3e196b object: Add a virtual pointer for the unref function
The virtual function gets called in cogl_object_unref. Any definition
of a CoglObject type can replace the default unref function by using
COGL_OBJECT_DEFINE_WITH_CODE to directly manipulate the
CoglObjectClass struct. The generated object constructors set the
pointer to the default implementation. The default implementation is
exported in the private header so that any overriding implementations
can chain up to it.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-27 17:22:57 +00:00
Neil Roberts
139421de19 object: Remove the type member of CoglObjectClass
Unlike in GObject the type number for a CoglObject is entirely an
internal implementation detail so there is no need to make a GQuark to
make it safe to export out of the library. Instead we can just
directly use a fixed pointer address as the identifier for the type.
This patch makes it use the address of the class struct of the
identifier. This should make it faster to do type checks because it
does not need to call a function every time it wants to get the type
number.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-27 17:18:32 +00:00
Neil Roberts
c39333a2c6 object: Reorder the CoglObject members by size
This moves the pointer members of CoglObject to the top and the int
members to the bottom so that there won't be any padding inserted on
64-bit machines. This reduces the size of the struct from 80 bytes to
72.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-27 17:18:32 +00:00
Emmanuele Bassi
417878538b Move GLES2 prototypes to their header
Some GLSL-related function prototypes are GLES2-only: GL implementations
are not required to provide them.

While Mesa is perfectly happy to return a dummy function pointer for
functions it doesn't support, other platforms are more picky, and will
return NULL.

In this particular case, this commit fixes GLSL support on OSX.

https://bugzilla.gnome.org/show_bug.cgi?id=668856

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-27 16:37:55 +00:00
Neil Roberts
5936bfb395 cogl-poll: Add a missing G_END_DECLS to the header
I accidentally left this out so I guess that would break apps using
C++.

https://bugzilla.gnome.org/show_bug.cgi?id=668385
2012-01-24 14:04:26 +00:00
Robert Bragg
b2d05f32c2 profile: use atexit not g_atexit
g_atexit has been deprecated so we simply use atexit instead now.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-16 23:27:36 +00:00
Robert Bragg
87ce1b21f9 wayland: perform buffer resizes lazily at swap buffers
Resizing a wayland client framebuffer should not affect the viewport
of additional primitives drawn to that framebuffer before the next swap
buffers request nor should querying the framebuffer's width and height
be affected until the next swap buffers request completes.

This patch changes cogl_wayland_onscreen_resize() so it only saves the
new geometry as "pending" state internal to the given CoglOnscreen. Only
when cogl_framebuffer_swap_buffers() is next called will the pending
size be flushed to the wayland egl api.
2012-01-16 18:27:20 +00:00
Robert Bragg
e1bd0b2090 Swaps a few uses of gint for int
We've avoiding using the redundant glib typedefs such as guint, gint
gpointer etc and prefer to use the equivalent C types so this patch
removes a few uses of gint that slipped past review.
2012-01-16 18:27:20 +00:00
Robert Bragg
3161f1b0e6 template: Allow configuration of swap throttle
This adds cogl_onscreen_template_set_swap_throttled() api that allows
developers to specify their preference for swap buffer throttling
up-front as part of the onscreen template that is used to create a
CoglDisplay when initializing Cogl. This is desirable because some
platforms may not support configuring swap throttling on a per
framebuffer basis and also since applications often want to apply the
same policy to all onscreen framebuffers anyway.
2012-01-16 18:27:20 +00:00
Robert Bragg
1e03780510 matrix: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the matrix api
symbols.
2012-01-16 18:27:20 +00:00
Robert Bragg
ec8591535c snippets: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the snippet api
symbols.
2012-01-16 18:27:20 +00:00
Robert Bragg
60ab0c0a6c framebuffer: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the cogl framebuffer
symbols.
2012-01-16 18:27:20 +00:00
Robert Bragg
2d70f5eb73 cogl.h: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the cogl.h symbols.
2012-01-16 18:27:20 +00:00
Robert Bragg
75b687a9eb onscreen: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the onscreen
framebuffer api symbols.
2012-01-16 18:27:20 +00:00
Robert Bragg
54b1fb0b5e renderer: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the cogl-pipeline
symbols.
2012-01-16 18:27:20 +00:00
Robert Bragg
e163f1ca1a Remove CoglVector3 type and use float * instead
It proved to be inconvenient that we had a special CoglVector3 typedef
for vectors instead of just accepting pointers to float arrays because
you'd so often end up having to make awkward casts from another vector
type into a CoglVector3 and then cast back again. We're hoping that
taking float pointers instead will lead to less unnecessary casting.
2012-01-16 18:27:19 +00:00
Robert Bragg
2b351af46a renderer: Remove _EXP symbol mangling and add gtk-doc
We are in the process of removing all _EXP suffix mangling for
experimental APIs (Ref: c6528c4b6c) and adding missing gtk-doc
comments so that we can instead rely on the "Stability: unstable"
markers in the gtk-doc comments. This patch tackles the symbols in
cogl-renderer.h.
2012-01-16 18:27:19 +00:00
Robert Bragg
a8513c1d77 renderer: Adds api to add/remove selection constraints
This allows applications to specify certain constraints that feed into
the process of selecting a CoglRenderer backend. For example
applications might depend on x11 for handling input and so they require
a backend that's also based on x11.
2012-01-16 18:27:19 +00:00
Robert Bragg
50d1285ba1 Updates in line with latest wayland protocol
The shm buffer format enum values were renamed and the explicitly
premultiplied format was dropped since it's now assumed if the buffer
has an alpha component then it's premultiplied.
2012-01-16 18:27:19 +00:00
Rob Bradford
8632c65e79 wayland: Add a cogl_wayland_onscreen_resize function
This function will call into the Wayland EGL platform API and resize the
surface that the window is using and update the internal dimensions for
framebuffer and viewport to reflect the change.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-13 13:56:12 +00:00
Neil Roberts
cbbac5a2f5 Add a feature ID for the swap event notification
Previously the swap event notification feature was only accessible as
a winsys feature using the semi-internal
cogl_clutter_winsys_has_feature. This just adds a feature ID for it so
it can also be accessed via cogl_has_feature.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-09 18:59:59 +00:00
Robert Bragg
c6528c4b6c Start removing _EXP defines and improves some docs
Originally we decided to use #define tricks to rename all experimental
symbols so that they had an _EXP suffix so it would be a bit clearer for
those wanting to check for ABI changes that they shouldn't worry about
these experimental symbols.

We feel now though that the defines are a bit more hassle than they are
really worth, since they are one extra thing to remember when coding,
they make using gdb slightly more awkward since you have to use the real
symbol name to set breakpoints and we already have a mechanism for
declaring symbols as experimental via gtk-doc that can be used by anyone
wanting to check for ABI changes.

Instead of just using a script to remove all the #defines we are going
to go through them manually because we need to make sure the symbols
are marked as unstable via gtk-doc. This patch does a first batch of
define removals and in fact some of the symbols didn't have any
documentation at all so that needed to be added too.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-05 21:00:17 +00:00
Robert Bragg
fc88e166f0 sub-texture: Exposes a getter for parent texture
This adds a cogl_sub_texture_get_parent getter for the parent of a
CoglSubTexture.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-05 20:57:52 +00:00
Robert Bragg
3bc70687ac Remove old fallback for vblank wait via manual drm ioctl
This workaround code has just been incrementally carried forward since
Cogl was integrated with Clutter but really we have no idea when this
code path was ever tested. Since the work around is from before the time
of the current Cogl developers we don't know anything about the
circumstances which led to this extreme workaround instead of pushing to
fix a driver.

It seems pretty likely we can push to fix any drm based drivers so
we're removing the workaround.

https://bugzilla.gnome.org/show_bug.cgi?id=667009

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-05 20:31:09 +00:00
Joshua Lock
20f2d51392 build: Fix building clutter on armv4t devices
GCC will define __ARM_ARCH_4T__ when building with "-march=armv4t" so we
can check this to turn off the use of 'clz' instructions, which
otherwise would cause compile errors like "selected processor does not
support ARM mode `clz r3,r0'".

Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Joshua Lock <josh@linux.intel.com>
Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
2012-01-05 20:13:41 +00:00
Neil Roberts
85d79ab4fa Add a utility to make a GSource out of a CoglContext
The GSource is created using cogl_glib_source_new which takes a
pointer to a CoglContext. The source calls cogl_poll_get_info() in its
prepare function and cogl_poll_dispatch() in its dispatch
function. The poll FDs on the source are updated according to what
Cogl reports.

The header is only included and the source only compiled if Cogl is
configured with GLib support.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-05 13:40:59 +00:00
Neil Roberts
181b875a3d xlib: Internally retrieve XEvents
Previously we relied on the application to send all X events through
Cogl using cogl_xlib_renderer_handle_event. This breaks the
abstraction that an application shouldn't need to know what winsys
Cogl is using. Now that we have main loop integreation in Cogl, the
Xlib-based winsys's can report that Cogl needs to block on the file
descriptor of the X connection and it can manually handle the
events.

The event retrieval can be disabled by an application if it calls the
new cogl_xlib_renderer_set_event_retrieval_enabled() function. The
event retrieval will also automatically be disabled if the application
sets a foreign display.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-05 13:40:24 +00:00
Neil Roberts
7497475295 Add support for main loop integration
This adds two new functions:

void
cogl_poll_get_info (CoglContext *context,
                    CoglPollFD **poll_fds,
                    int *n_poll_fds,
                    gint64 *timeout);

void
cogl_poll_dispatch (CoglContext *context,
                    const CoglPollFD *poll_fds,
                    int n_poll_fds);

The application is expected to call the first function whenever it is
about to block to go idle, and the second function whenever it comes
out of idle. This gives Cogl winsys's the ability poll file
descriptors for events. For example when handing swap complete
notifications, it can report that it needs to block on a file
descriptor.

The two functions are backed by winsys virtual functions. There are
currently no implementations. The default handler for get_info just
reports no file descriptors and an infinite timeout.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-05 13:40:10 +00:00
Neil Roberts
55344ff2c4 Add the missing cogl_is_context() function
This was missing from the CoglContext header.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-01-05 12:58:41 +00:00
Robert Bragg
9a82b9d21b build: removes unused variable
Simply removes an unused variable to avoid a compile time warning
2012-01-04 19:32:41 +00:00
Robert Bragg
def67a39fe gl-prototypes: split up cogl-ext-functions.h
This splits up cogl-ext-functions.h in to sets of prototypes that
can be included separately so that we can include just core
gles1 or gles2 functions without any extensions.

Since eglGetProcAddress can not be used to query core client APIs
and some implementations (notably on Android) can return a garbage
pointer instead of NULL this will allow us to explicitly check
when to use eglGetProcAddress and when to use dlsym().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-04 19:27:20 +00:00
Robert Bragg
04a71afab5 pipeline: fix realloc of uniform overrides array
If we need to realloc the uniforms overrides array for a pipeline to
insert a new override then we copy the old state into the new allocation
for the entries surrounding the inserted entry.

This patch fixes a mistake in how we copied the old entries that follow
the inserted entry since we were actually copying to begining of the new
allocation and potentially reading from beyond the extents of the old
allocation.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-04 19:27:20 +00:00
Chun-wei Fan
e215902110 Bug 666349: Dist files needed by MSVC for SDL winsys
Distribute the new VS2008/2010 project/solution files and the
pre-configured cogl-defines.h(.win32_SDL) needed for the build with MSVC.
2011-12-20 22:41:55 +08:00
Chun-wei Fan
5b53a1e4e8 Bug 666349: SDL/MSVC-Add a pre-configured cogl-defines.h
Create a pre-configured cogl-defines.h for use during Visual C++
compilation of the SDL winsys (this is in addition to the Win32/WGL
winsys).
2011-12-20 22:30:42 +08:00
Neil Roberts
24fe7c300c cogl-texture-pixmap-x11: Fix the foreach_sub_texture_in_region impl
The foreach_sub_texture_in_region implementation tries to forward the
function on to its child texture but it was mistakenly forwarding back
on to itself so it would just recurse endlessly and crash.
2011-12-20 12:46:50 +00:00
Chun-wei Fan
330146557d Bug 664827: Autotools changes for Windows .rc files
This will make autotools fill in the versioning info for the COGL/
COGL-Pango .rc files and distribute the resulting .rc files
2011-12-15 20:31:31 +08:00
Chun-wei Fan
090527f32d Add Windows Resource Files templates
This tells people on the versioning info and copyright info of the
COGL/COGL-Pango DLLs.  The versioning values are inserted during the
autogen stage.
2011-12-15 20:31:30 +08:00
Neil Roberts
bdcbb8af4d Update the SDL winsys
The SDL winsys was missing a few minor features, such as the
implementation. This patch adds that in.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-14 16:45:17 +00:00
Neil Roberts
616d27f169 cogl-texture-2d: Fix checking for the EGL winsys
CoglTexture2D had an assert to verify that the EGL winsys was being
used. This doesn't make any sense any more because the EGL winsys
can't be used directly but instead it is just a base winsys for the
platform winsys's. To fix this this patch adds a set of 'criteria'
flags to each winsys, one of which is 'uses EGL'. CoglTexture2D can
use this to determine if the winsys is supported.

Eventually we might want to expose these flags publically so that an
application can select a winsys based on certain conditions. For
example, an application may need a winsys that uses X or EGL but
doesn't care exactly which one it is.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-14 16:41:16 +00:00
Neil Roberts
ff5bfc4a86 Rename the EGL_X11 winsys to EGL_XLIB
Eventually we might want to have an XCB-based EGL winsys. We already
have xlib-specific API in CoglRenderer (eg, to set a foreign display)
so the application needs to be able to specifically select between XCB
and XLIB.

This also removes the POWERVR part while renaming
COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT to
COGL_HAS_EGL_PLATFORM_XLIB_SUPPORT because the winsys is equally
applicable to Mesa.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-14 16:40:26 +00:00
Neil Roberts
3a4dce0c53 Move the EGL Android winsys out of cogl-winsys-egl
This moves all of the code specific to the Android platform out of
cogl-winsys-egl. It is completely untested apart from that it
compiles using a dummy android/native_window.h header.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-13 16:08:37 +00:00
Neil Roberts
d70c764da6 Move the EGL GDL winsys out of cogl-winsys-egl
This moves all of the code specific to the gdl winsys out of
cogl-winsys-egl. It is completely untested apart from that it
compiles.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-13 16:08:37 +00:00
Neil Roberts
f1d831d644 Move the EGL null winsys out of cogl-winsys-egl
This moves all of the code specific to the null winsys out of
cogl-winsys-egl.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-13 13:12:17 +00:00
Neil Roberts
a6b1f55546 kms: Don't use egl_surface_width/height
The egl_surface_width/height properties in CoglDisplayEGL were
accidentally being conditionally defined depending on KMS
support. They are not necessary because CoglDisplayKMS also already
stores the width/height and this was just copied over to the EGL
dipslay.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-13 13:12:16 +00:00
Neil Roberts
4dbef01ec3 winsys: Move Wayland-specific code out of the EGL winsys
All of the Wayland-specific code now lives in the EGL_WAYLAND winsys.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-12 17:41:43 +00:00
Neil Roberts
613a3390da winsys: Move X11/Xlib-specific code out of the EGL winsys
All of the X11/Xlib-specific code now lives in the EGL_X11 winsys.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-12 16:14:19 +00:00
Neil Roberts
a72a2c99fe Don't bother trying to accept NULL in _cogl_winsys_onscreen_bind
The GLX and EGL winsys backends had a check for when onscreen==NULL
in which case they would instead try to bind the dummy surface. This
wouldn't work however because it would have already crashed by that
point when it tried to get the Cogl context out of the onscreen. The
function needs a bit of refactoring before it could support this but
presumably nothing is relying on this anyway because it wouldn't work
so for now we can just remove it.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-12 16:14:18 +00:00
Neil Roberts
7f74712a79 Remove CoglXlibDisplay
CoglXlibDisplay just contained one member called dummy_xwin. This was
not shared outside of the respective winsys's so I don't think it
really makes sense to have a separate shared struct for it. It seems
more like an implementation detail that is specific to the winsys
because for example it may be that the EGL winsys could use the
surfaceless extension and not bother with a dummy window. This will
also make it easier to factor out the Xlib-specific data in
CoglDisplayEGL to the platform data.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-12 16:14:18 +00:00
Neil Roberts
a8f84af776 cogl-xlib-renderer: Move private data to cogl_object_set_user_data
Previously the Xlib renderer data was meant to be the first member of
whatever the winsys data is. This doesn't work well for the EGL winsys
because it only needs the Xlib data if the X11 platform is used. The
Xlib renderer data is now instead created on demand and connected to
the object using cogl_object_set_user_data. There is a new function to
get access to it.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-12 16:13:57 +00:00
Rob Bradford
e723b3b479 debug: Accept HELP for the COGL_DEBUG environment variable.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-09 17:57:10 +00:00
Rob Bradford
6e37cebc7a renderer: Make COGL_RENDERER / COGL_DRIVER env. variables case insensitive
This will make it much more user friendly :-)

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-09 17:57:10 +00:00
Neil Roberts
dd75926c1a egl: Split out the KMS winsys as overrides of the EGL winsys
Instead of having #ifdefs to hook into the normal EGL winsys, the KMS
winsys now overrides any winsys functions that it wants. Where the
winsys wants to hook into a point within a function provided by the
EGL winsys there is a EGL-platform vtable which gets set on the EGL
renderer data during renderer_connect. The KMS-specific data on all of
the structures is now allocated separately by the KMS winsys and is
pointed to by a new 'platform' pointer in the EGL data.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-09 17:29:49 +00:00
Neil Roberts
93e6e2051f egl: Allow multiple EGL platforms
The #ifdefs in cogl-winsys-egl have been changed so that they
additionally check renderer->winsys_vtable->id for the corresponding
winsys ID so that multiple EGL platforms can be enabled.

The is a stop-gap solution until we can move all of the EGL platforms
into their own winsys files with overrides of the EGL vtable. However
with this approach we can move one platform at a time which will make
it easier.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-08 19:16:41 +00:00
Neil Roberts
a1e1527b69 Add a separate winsys vtable for each EGL platform
Instead of just having an "EGL" renderer, there is now a separate
winsys for each platform. Currently they just directly copy the vtable
for the EGL platform so it is still only possible to have one EGL
platform compiled into Cogl. However the intention is that the
winsys-specific code for each platform will be moved into override
functions in the corresponding platform winsys.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-08 17:38:25 +00:00
Rob Bradford
590e1c46f0 wayland: Add API to access the shell surface for the onscreen
Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-08 16:21:57 +00:00
Rob Bradford
4928ca5a90 wayland: Port to latest Wayland API (to wl_surface_shell)
Requests for the shell to manipulate it's state for the surface are now
abstracted through a wl_shell_surface object rather through wl_shell as
before.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-08 16:19:50 +00:00
Neil Roberts
889e4aba9c kms: Check for the right surfaceless extension depending on driver
There are three separate EGL_KHR_surfaceless_* extensions depending on
which GL API is being used so we should probably check the right one
depending on which driver Cogl has selected.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-08 12:48:59 +00:00
Neil Roberts
7adf7c5e38 kms: Fix GLES2 support
There were two problems stopping the KMS winsys from working with a
GLES2 driver:

• When creating the EGL context, it was missing the attribute to
  select the client version so it would end up with the GLES1 API.

• When creating the depth buffer for the framebuffer it was using
  GL_DEPTH_COMPONENT but only GL_DEPTH_COMPONENT16 is supported on
  GLES. cogl-framebuffer already unconditionally uses this so it
  probably makes sense to do the same here.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-08 12:48:59 +00:00
Chun-wei Fan
1e7f536c40 cogl/Makefile.am VS Support Update
Should be one %, not two (%%) for echoing...
2011-12-08 16:30:37 +08:00
Chun-wei Fan
7069825cb5 cogl/Makefile.am: VS support-Create a .bat to gen enums
Pre-generate a .bat file to be used to generate the cogl-enum-types.[ch]
for the build process.  This will greatly simplify the maintenace process
as the listing of headers to be parsed by glib-mkenums can be manifested
automatically during 'make dist', and this list changes quite a bit during
the development cycle.
2011-12-08 16:16:58 +08:00
Chun-wei Fan
9cff9236ca cogl/Makefile.am: Visual C++ support updates
Filter out the kms winsys sources... these aren't for Windows.
2011-12-08 12:51:05 +08:00
Neil Roberts
39203cb8f1 attribute: Fix including progend-glsl-private.h on GL2
Previously this header was only included on GLES2 but since 7283e0a4
the progend is used on any driver where GLSL is available. This
changes the #ifdef to check for the presence of the GLSL progend.

Based on a patch by Fan, Chun-wei

https://bugzilla.gnome.org/show_bug.cgi?id=665722

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-07 19:01:29 +00:00
Robert Bragg
09520a7d61 renderer: don't re-connect for display check
This ensure that cogl_renderer_check_onscreen_template() doesn't call
winsys->renderer_connect() if the renderer has already been connected
as that can fail with some backends.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-07 15:53:05 +00:00
Robert Bragg
79f20d08b6 wayland: Updates the wayland compositor side support
The compositor side wayland support enabling us to create textures from
wayland buffers needed updating since visuals were removed from the
wayland protocol.

This also fixes the #ifdef guards for the bind_wayland_display extension
in cogl-winsys-egl-feature-functions.h since it was mistakenly checking
that client-side wayland support had been enabled which won't be the
case.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-07 15:53:05 +00:00
Robert Bragg
14ddbd980b wayland: Add api to set a foreign shell
Since the wayland protocol doesn't currently provide a way to
retrospectively query the interfaces that get notified when a client
first connects then when using a foreign display with Cogl then we also
need api for telling cogl what compositor and shell objects to use. We
already had api for setting a foreign compositor so this patch just adds
api for setting a foreign shell.

This patch also adds documentation for all the wayland specific apis.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-07 15:53:05 +00:00
Neil Roberts
fb8c48108b attribute: Add a missing 'else'
The handler for the normal attribute was missing an else so presumably
it would have crashed on GLES2.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-07 14:52:52 +00:00
Neil Roberts
5f0a57ffdb snippet: Add some more documentation
This adds a documentation section for CoglSnippet which gives an
overview of how to use them. It also fixes some syntax errors in the
existing documentation and adds the missing pipeline functions for
adding snippets to the documentation sections file.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-07 14:52:48 +00:00
Chun-wei Fan
1be2cdab21 cogl-bitmask.h: Eliminate compiler warning
Both _cogl_bitmask_set_flags and _cogl_bitmask_set_flags_array have void
return types, so just execute _cogl_bitmask_set_flags_array without
returning that to elimate a compiler warning.

https://bugzilla.gnome.org/show_bug.cgi?id=665722

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-07 12:08:15 +00:00
Neil Roberts
dba42715d4 egl-winsys: Bind the framebuffer before swapping
For some reason the EGL spec says that the surface passed to
eglSwapBuffers must be bound as the current surface for the swap to
work. Mesa validates that this is the case and returns an error from
the swap buffers call if not.

https://bugzilla.gnome.org/show_bug.cgi?id=665604

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-07 12:08:15 +00:00
Chun-wei Fan
364dae7e1f Update cogl.symbols
-For the snippets APIs.
-For the introduction of the cogl_matrix_orthographic(_EXP) API.
-Also for the new attribute and framebuffer APIs
2011-12-07 16:54:04 +08:00
Chun-wei Fan
a540245489 cogl-snippets.h: Fix typo 2011-12-07 16:52:12 +08:00
Neil Roberts
3f28168f1e attribute: Add the buffer and normalized property APIs to the header
The header was missing declarations for
cogl_attribute_{get,set}_{buffer,normalized}.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
f005f517fe Flush matrices in the progend and flip with a vector
Previously flushing the matrices was performed as part of the
framebuffer state. When on GLES2 this matrix flushing is actually
diverted so that it only keeps a reference to the intended matrix
stack. This is necessary because on GLES2 there are no builtin
uniforms so it can't actually flush the matrices until the program for
the pipeline is generated. When the matrices are flushed it would
store the age of modifications on the matrix stack so that it could
detect when the matrix hasn't changed and avoid flushing it.

This patch changes it so that the pipeline is responsible for flushing
the matrices even when we are using the GL builtins. The same
mechanism for detecting unmodified matrix stacks is used in all
cases. There is a new CoglMatrixStackCache type which is used to store
a reference to the intended matrix stack along with its last flushed
age. There are now two of these attached to the CoglContext to track
the flushed state for the global matrix builtins and also two for each
glsl progend program state to track the flushed state for a
program. The framebuffer matrix flush now just updates the intended
matrix stacks without actually trying to flush.

When a vertex snippet is attached to the pipeline, the GLSL vertend
will now avoid using the projection matrix to flip the rendering. This
is necessary because any vertex snippet may cause the projection
matrix not to be used. Instead the flip is done as a forced final step
by multiplying cogl_position_out by a vec4 uniform. This uniform is
updated as part of the progend pre_paint depending on whether the
framebuffer is offscreen or not.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
7590fc3ec3 snippet: Add a hook for the vertex transform
This adds a hook to wrap or replace the vertex transform stage.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
68b3643b25 snippet: Add a hook for the layer texture coordinate transformation
This adds a hook called COGL_SNIPPET_HOOK_TEXTURE_COORD_TRANSFORM.
This can be used to alter the application of the layer user matrix to
a texture coordinate or it can bypass it altogether.

This is the first per-layer hook that affects the vertex shader state
so the patch includes the boilerplate needed to get that to work.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
b7e15929b6 snippet: Add a hook for the layer fragment processing
This adds a hook to replace or wrap the fragment processing for a
particular layer.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
4581ce5f15 fragend-glsl: Don't generate the default texture lookup if replaced
Previously the function containing the default texture lookup is
always generated regardless of whether there is a snippet with a
replace string which would cause it not be used. Now this snippets are
all scanned to check for replace strings before generating the texture
lookup.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
272c6567fa glsl-fragend: Store the cached variables in global variables
The variables caching the result of texture lookups and layer
calculations are now stored in global variables so that when a hook
for the layer processing is added the variables can still be accessed
even if the generated code is within a separate function.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
a0903e0cfb snippet: Don't generate code for snippets that are replaced
The loop that generates code for a list of snippets now starts from
the first snippet that has a replace string. Any snippets before that
would be ignored so there's no point in generating code for them.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
cdc4bd6361 snippet: Fix detecting the last snippet
The function for generating the GLSL for a list of snippets was trying
to detect the last snippet so that it could use a different function
name. However this wouldn't work if the last snippet has a different
hook. To fix this it now just counts the snippets that have the same
hook beforehand and detects the last one using the count.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
09c2e4abe7 snippet: Move the hook to be a property of the snippet
Instead of specifying the hook point when adding to the pipeline using
a separate function for each hook, the hook is now a property of the
snippet. The hook is set on construction and is then read-only.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
5be5a03343 pipeline: Assume blend enabled when there are snippets
Whenever snippets are enabled we can't determine whether the final
color will be fully opaque so we just have to assume blending should
be enabled.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
df0f9a862f pipeline: Add a snippet hook for the texture lookup
This adds a per-layer snippet hook for the texure lookup. Here the
snippet can modify the texture coordinates used for the lookup or
modify the texel resulting from the lookup. This is the first
per-layer hook so this also adds the
COGL_PIPELINE_LAYER_STATE_FRAGMENT_SNIPPETS state and all of the
boilerplate needed to make that work.

Most of the functions used by the pipeline state to manage the snippet
list has been moved into cogl-pipeline-snippet.c so that it can be
shared with the layer state.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
4cdf66f89b pipeline: Move the snippet source loop into a common function
The two loops that generate the functions for the snippets in the
fragend and vertend are very similar so to avoid code duplication this
patch moves the logic to its own function in a new
cogl-pipeline-snippet.c file.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:06 +00:00
Neil Roberts
717e96b304 snippet: Add a 'replace' string
If present, the 'replace' string will be used instead of whatever code
would normally be invoked for that hook point. It will also replace
any previous snippets.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:05 +00:00
Neil Roberts
0fdd5690c6 pipeline: Wrap each snippet in its own function
Each snippet is now given its own function which contains the pre and
post strings. Between these strings the function will chain on to
another function. The generated cogl source is now stored in a
function called cogl_generated_source() which the last snippet will
chain on to. This should make it so that each snippet has its own
namespace for local variables and it can share variables declared in
the pre string in the post string. Hopefully the GLSL compiler will
just inline all of the functions so it shouldn't make much difference
to the compiled output.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:05 +00:00
Neil Roberts
d38ae0284b cogl-pipeline: Add two hook points for adding shader snippets
This adds two new public experimental functions for attaching
CoglSnippets to two hook points on a CoglPipeline:

void cogl_pipeline_add_vertex_hook (CoglPipeline *, CoglSnippet *)
void cogl_pipeline_add_fragment_hook (CoglPipeline *, CoglSnippet *)

The hooks are intended to be around the entire vertex or fragment
processing. That means the pre string in the snippet will be inserted
at the very top of the main function and the post function will be
inserted at the very end. The declarations get inserted in the global
scope.

The snippets are stored in two separate linked lists with a structure
containing an enum representing the hook point and a pointer to the
snippet. The lists are meant to be for hooks that affect the vertex
shader and fragment shader respectively. Although there are currently
only two hooks and the names match these two lists, the intention is
*not* that each new hook will be in a separate list. The separation of
the lists is just to make it easier to determine which shader needs to
be regenerated when a new snippet is added.

When a pipeline becomes the authority for either the vertex or
fragment snipper state, it simply copies the entire list from the
previous authority (although of course the shader snippet objects are
referenced instead of copied so it doesn't duplicate the source
strings).

Each string is inserted into its own block in the shader. This means
that each string has its own scope so it doesn't need to worry about
name collisions with variables in other snippets. However it does mean
that the pre and post strings can't share variables. It could be
possible to wrap both parts in one block and then wrap the actual
inner hook code in another block, however this would mean that any
further snippets within the outer snippet would be able to see those
variables. Perhaps something to consider would be to put each snippet
into its own function which calls another function between the pre and
post strings to do further processing.

The pipeline cache for generated programs was previously shared with
the fragment shader cache because the state that affects vertex
shaders was a subset of the state that affects fragment shaders. This
is no longer the case because there is a separate state mask for
vertex snippets so the program cache now has its own hash table.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:05 +00:00
Neil Roberts
f37738453e Add a CoglSnippet type
This adds a CoglObject called CoglSnippet which will be used to store
strings used as GLSL snippets to be attached at hook points to a
CoglPipeline. The snippets can currently contain three strings:

declarations - This will be placed in the global scope and is intended
               to be used to declare uniforms, attributes and
               functions.

pre           - This will be inserted before the hook point.

post          - This will be inserted after the hook point.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:05 +00:00
Neil Roberts
0c82c296bf framebuffer: Handle a NULL previous framebuffer when flushing
_cogl_framebuffer_flush_state needs to handle the case where
ctx->current_draw_buffer is NULL because this will be set in the
destructor for CoglFramebuffer if the framebuffer being destroyed is
the current framebuffer. This patch just makes it assume all state has
changed in that case.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-12-06 19:02:05 +00:00
Robert Bragg
7283e0a49c rework enabling of attributes, removing _cogl_enable()
This removes the limited caching of enabled attributes done by
_cogl_enable() and replaces it with a more generalized set of bitmasks
associated with the context that allow us to efficiently compare the set
of attribute locations that are currently enabled vs the new locations
that need enabling so we only have to inform OpenGL of the changes in
which locations are enabled/disabled.

This also adds a per-context hash table for mapping attribute names to
global name-state structs which includes a unique name-index for any
name as well as pre-validated information about builtin "cogl_"
attribute names including whether the attribute is normalized and what
texture unit a texture attribute corresponds too.

The name-state hash table means that cogl_attribute_new() now only needs
to validate names the first time they are seen.

CoglAttributes now reference a name-state structure instead of just the
attribute name, so now we can efficiently get the name-index for any
attribute and we can use that to index into a per-glsl-program cache
that maps name indices to real GL attribute locations so when we get
asked to draw a set of attributes we can very quickly determine what GL
attributes need to be setup and enabled. If we don't have a cached
location though we can still quickly access the string name so we can
query OpenGL.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
2112af0bc5 framebuffer: deal with winding state like other state
We should not be deciding whether we need to really update the GL face
winding state at the point where a new framebuffer has been pushed, we
should be waiting until we have really been asked to flush some
framebuffer state otherwise we may do redundant work if multiple
framebuffers are pushed/popped before something is really drawn.

This integrates the face winding state tracking with the design we have
for handling most of the other framebuffer state so we benefit from the
optimizations for minimizing the cost of _cogl_framebuffer_flush_state()

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
cf4b228fc0 framebuffer: track fb color mask like other fb state
We should not be deciding whether we need to really update the GL color
mask state at the point where a new framebuffer has been pushed, we
should be waiting until we have really been asked to flush some
framebuffer state otherwise we may do redundant work if multiple
framebuffers are pushed/popped before something is really drawn.

This integrates the color mask state tracking with the design we have
for handling most of the other framebuffer state so we benefit from the
optimizations for minimizing the cost of _cogl_framebuffer_flush_state()

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
042dc7c8cd framebuffer: Optimize _cogl_framebuffer_flush_state()
Previously the cost of _cogl_framebuffer_state_flush() would always
scale by the total amount of state tracked by CoglFramebuffer even in
cases where we knew up-front that we only wanted to flush a subset of
the state or in cases where we requested to flush the same framebuffer
multiple times with no changes being made to the framebuffer.

We now track a set of state changed flags with each framebuffer and
track the current read/draw buffers as part of the CoglContext so that
we can quickly bail out when asked to flush the same framebuffer
multiple times with no changes.

_cogl_framebuffer_flush_state() now takes a mask of the state that we
want to flush and the implementation has been redesigned so that the
cost of checking what needs to be flushed and flushing those changes
now scales by how much state we actually plan to update.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
6ab371d587 clip-state: remove redundant _cogl_clip_state_flush() api
There was only one place where we called _cogl_clip_state_flush() in
_cogl_framebuffer_flush_state() and we can just as well use
_cogl_clip_state_get_stack() and _cogl_clip_stack_flush() directly
instead.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
6d1bf9a0d4 remove redundant _cogl_clip_stack_dirty() api
The only place we were calling _cogl_clip_stack_dirty() was when
changing the current draw_buffer which also implies a change in
the current clip stack. _cogl_clip_stack_flush() would already
be able to quickly determine that the clip stack has changed by
checking ctx->current_clip_stack so there isn't really any need
to explicitly mark the clip_stack state as dirty.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
104a6be84c cogl-matrix-stack: remove flush avoidance checks
The aim is to make cogl-framebuffer.c responsible for avoiding redundant
flushing of its matrix stacks so this removes the checks done directly
within cogl-matrix-stack.c.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
ff4921cef9 docs: updates cogl-matrix.h docs to be consistent
This update some of the cogl-matrix.h documentation to be consistent
with the corresponding documentation for framebuffer matrix-stack
methods in cogl-framebuffer.h

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:57 +00:00
Robert Bragg
39a7bcff67 matrix-stack: Avoid referencing the default CoglContext
This removes the use of _COGL_GET_CONTEXT() from cogl-matrix-stack.c
as part of the ongoing effort to evolve cogl to get rid of the need for
a default context.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
5156365eae path: use cogl_framebuffer_push_path_clip in cogl2-path.c
_cogl_path_fill_nodes_with_clipped_rectangle() sometimes falls back to
pushing a framebuffer clip region and filling the region using
cogl_rectangle(). Since we aim to eventually deprecate
cogl_clip_push_from_path() as it relies on the default CoglContext we
would rather this internal code update a framebuffer's clip-state using
the cogl_framebuffer clip stack api instead.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
36575502e8 docs: make cogl2-clip-state.h docs consistent
This updates some of the cogl2-clip-state.h cogl_clip_ API documentation
to make it consistent with the documentation for corresponding
framebuffer clip stack API in cogl-framebuffer.h

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
de04a58f30 docs: make cogl.h clip stack docs consistent
This updates some of the cogl.h cogl_clip_ API documentation to make it
consistent with the documentation for corresponding framebuffer clip
stack API in cogl-framebuffer.h

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
6bb409e996 framebuffer: Add CoglFramebuffer clip stack methods
This adds CoglFramebuffer methods for accessing the clip stack. We plan
on making some optimizations to how framebuffer state is flushed which
will require us to track when a framebuffer's clip state has changed.

This api also ties in to the longer term goal of removing the need for a
default global CoglContext since these methods are all implicitly
related to a specific context via their framebuffer argument.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
652c8c31cf avoid touching fb matrix stack directly
This ensures we don't touch a framebuffer's matrix stack directly if we
are also relying on _cogl_framebuffer_flush_state(). We want to get to
the point where we can set dirty flags against framebuffer state at the
point it changes but that means we can't allow direct access to the
matrix stack. _cogl_texture_draw_and_read() has now been changed so it
uses cogl_framebuffer_ methods to update the matrix stacks including
adding new internal _cogl_framebuffer_push/pop_projection() functions
that allow us to set transient projections.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
5ca78668af Adds cogl_framebuffer_identity_matrix
This adds a cogl_framebuffer_identity_matrix() method that can be used
to reset the current modelview matrix to the identity matrix.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
a81458f5b9 docs: make cogl.h matrix stack documentation consistent
This updates the cogl.h matrix stack documentation consistent with the
corresponding documentation in cogl-framebuffer.h for the framebuffer
matrix stack methods.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
ccde191191 framebuffer: Add CoglFramebuffer matrix stack methods
This adds cogl_framebuffer_ methods to update the modelview and
projection matrix stacks to replace functions like cogl_translate(),
cogl_rotate() and cogl_scale() etc.

This is part of the on-going effort to get rid of the global CoglContext
pointer since the existing methods don't take an explicit pointer to a
CoglContext. All the methods are now related to a context via the
framebuffer.

We added framebuffer methods instead of direct context methods because
the matrix stacks are per-framebuffer and as well as removing the global
CoglContext we would rather aim for a more direct state access API
design than, say, cairo or OpenGL, so we'd like to avoid needing the
cogl_push/pop_framebuffer(). We anticipate that Cogl will mostly be
consumed by middleware graphics layers such as toolkits or game engines
and feel that a more stateless model will avoid impedance mismatches if
higher levels want to expose a stateless model to their developers and
statefullness can still be added by higher levels if really desired.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
595311ba55 cogl-matrix-stack: Adds _cogl_matrix_stack_equal
Adds a function for comparing the top matrix entries of two matrix
stacks.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
a4f3d0d18b matrix: Add cogl_matrix_orthographic
This adds an experimental cogl_matrix_orthographic() function that is
more consistent with other Cogl api by taking x_1, y_1, x_2, y_2
arguments to define the top-left and bottom-right coordinates of the
orthographic coordinates instead of OpenGL style left, right, bottom and
top values.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
ba02f70961 texture: assert set_region size <= src size
This improves the documentation for cogl_texture_set_region() and
cogl_texture_set_region_from_bitmap() to explain that the region can't
be larger than the source data and also adds runtime assertions that
such a request isn't made.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Robert Bragg
aa59dc5e8d docs: Fix a s/called/culled/ typo
The documentation for CoglPipelineCullFaceMode had a repeated typo with
"called" being used instead of "culled" which this fixes.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-12-06 18:51:56 +00:00
Tomeu Vizoso
1de6575ca2 build: Add missing include in cogl-winsys-egl-private.h
We were missing APIENTRY.
2011-12-06 19:49:00 +01:00
Rob Bradford
7f2a896351 kms: Avoid using struct member before it is set
When saving the CRTC we were trying to use a struct member for the encoder
that wasn't valid at that point in time - instead use the local variable.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-30 15:37:09 +00:00
Neil Roberts
da154b9a3b pipeline: Add a missing break for the uniforms state
_cogl_pipeline_init_multi_property_sparse_state was missing a break in
the case statement handling uniforms. This doesn't yet matter because
it is the last one handled anyway but it will bite someone later.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-29 13:03:25 +00:00
Robert Bragg
be40cbb8c3 build: include missing headers in cogl-winsys-egl-private.h
We were missing various platform header includes in
cogl-winsys-egl-private.h when building support for non KMS egl
platforms.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 23:19:45 +00:00
Robert Bragg
c2729e4ea8 build: don't inc egl headers for non EGL builds
For example when building on windows we don't want to require EGL
headers when compiling cogl-renderer.c or cogl-texture-2d.c so we make
sure not to include cogl-winsys-egl-private.h if we aren't supporting
EGL.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 23:19:35 +00:00
Robert Bragg
40b14c6084 kms: avoid using redundant g* and GL* types
A small, pedantic change to remove the use of redundant gint and GLuint
types instead of int and unsigned int.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 22:43:15 +00:00
Robert Bragg
056daad850 build: only include cogl-winsys-kms.h if KMS enabled
Only include cogl-winsys-kms.h in cogl-winsys-egl-private.h if KMS
support has been enabled.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-28 22:39:19 +00:00
Robert Bragg
aa6433d8c5 kms: Check for EGL_KHR_surfaceless_opengl extension
This adds a check for the EGL_KHR_surfaceless_opengl extension which we
depend on for being able to MakeCurrent (NO_SURFACE) as well as create a
context without and EGLConfig.

Reviewed-by: Rob Bradford <rob@linux.intel.com>
2011-11-28 17:38:17 +00:00
Robert Bragg
7a91c91994 kms: flatten setup_kms into _cogl_winsys_kms_display_setup
Since _cogl_winsys_kms_display_setup was basically just calling
setup_kms() it made sense to fold the code of setup_kms() back into the
_cogl_winsys_kms_display_setup() function.

Reviewed-by: Rob Bradford <rob@linux.intel.com>
2011-11-28 17:38:15 +00:00
Robert Bragg
607bfec48d kms: move Cogl*EGL typedefs to cogl-winsys-egl-private.h
So that the various internal Cogl*EGL typedefs can be available to
cogl-winsys-kms.c this moves them into cogl-winsys-egl-private.h

Reviewed-by: Rob Bradford <rob@linux.intel.com>
2011-11-28 17:37:31 +00:00
Rob Bradford
1b54c8023e kms: Add first version of "baremetal" backend for EGL on KMS
To start with this backend only supports creating a single CoglOnscreen
framebuffer and will automatically set is up to display fullscreen on
the first suitable crtc it can find.

To compile this backend - get some dribbly black candles, sacrifice a
goat and configure with: --enable-kms-egl-platform

Note: There is currently a problem with using GLES2 with this winsys
so you need to run with EGL_DRIVER=gl
Note: If you have problems with mesa crashing in XCB during
eglInitialize then you may need to explicitly run with EGL_PLATFORM=gbm

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-28 17:37:28 +00:00
Neil Roberts
d44e548715 cogl-debug: Mark _cogl_debug_flags with dllexport for MSVC
When building with MSVC, symbols to be exported that point to data
need to be marked with dllimport to be successfully imported. The
_cogl_debug_flags variable is currently exported because it is used
from cogl-pango. This patch adds a COGL_EXPORT macro to cogl-util.h
which is used in cogl-debug.h

Based on a patch by Chun-wei Fan

https://bugzilla.gnome.org/show_bug.cgi?id=650020

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-25 13:14:10 +00:00
Chun-wei Fan
2055f6ba91 VS 2008/2010 project files to build Cogl
These are the VS 2008/2010 project files to build Cogl, with a README.txt
to explain the process involved.

Note that the Cogl and Cogl-Pango projects (and filters for VS2010) are
expanded with the correct source file listings during "make dist", which
is done to simplify maintenance of these project files.

-added preconfigured config.h(.win32.in), which is expanded with the
 correct versioining info during autogen
-added preconfigued cogl/cogl-defines.h.win32
-added symbols files for cogl and cogl-pango
-Have configure.ac expand the config.h.win32.in into config.h.win32
 with the correct versioning info, etc, and to include the Visual C++
 project files for distribution
-Added rules in cogl/Makefile.am to expand the cogl VS 2008/2010 projects
 and filters from the templates with up-to-date source file listings, to
 distribute cogl-enum-types.c, cogl-enum-types.h to ease compilation and
 to avoid depending on PERL on Windows installations.
-Added rules in cogl-pango/Makefile.am to expand the cogl-pango VS2008/
 2010 projects and filters from the templates with up-to-date source file
 listings.
-Added/edited various Makefile.am's in build to distribute the VS2008/2010
 project files and associated items required for the build.
-Update .gitignore. There needs to be a pre-configured
 config.h(.win32) and its template, config.h.win32.in for Visual C++
 builds

https://bugzilla.gnome.org/show_bug.cgi?id=650020

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-25 13:12:45 +00:00
Neil Roberts
9e52b4d714 Fix comparing the uniforms state
When comparing uniform values, it was not correctly handling the case
where pipeline0 has the value set but pipeline1 does not (only the
other way around) so it would crash.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-24 13:23:00 +00:00
Chun-wei Fan
80a9c3bb32 Update cogl/winsys/cogl-winsys-stub.c
Deal with c99ism... I know it's not pretty, but it is the way
to go with non-c99 compilers.  That's life...

Reviewed-by: Neil Roberts <neil@linux.intel.com>
Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-23 12:16:45 +00:00
Neil Roberts
61d71c0926 cogl-flags: Fix iterating flag when the most-significant bit is set
When the flags contain a value that only has the most-significant bit
set then ffsl will return the size of an unsigned long. According to
the C spec it is undefined what happens when shifting by a number
greater than or equal to the size of the left operand. On Intel (and
probably others) this seems to end up being a no-op so the iteration
breaks. To fix this we can split the shift into two separate
shifts. We always need to shift by at least one bit so we can put this
one bit shift into a separate operator.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-22 16:07:21 +00:00
Neil Roberts
c269817edd cogl-pipeline: Use a hash table for faster uniform name lookup
The uniform names are now stored in a GPtrArray instead of a linked
list. There is also a hash table to speed up converting names to
locations.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
4a7cd0d2ac cogl-pipeline: Store the uniform overrides in an array instead of list
Previously the uniform overrides were stored in a linked list. Now
they are stored in a g_malloc'd array. The values are still tightly
packed so that there is only a value for each uniform that has a
corresponding bit in override_mask. The allocated size of the array
always exactly corresponds to the number of bits set in the
override_mask. This means that when a new uniform value is set on a
pipeline it will have to grow the array and copy the old values
in. The assumption is that setting a value for a new uniform is much
less frequent then setting a value for an existing uniform so it makes
more sense to optimise the latter.

The advantage of using an array is that we can quickly jump to right
boxed value given a uniform location by doing a population count in
the bitmask for the number of bits less than the given uniform
location. This can be done in O(1) time whereas the old approach using
a list would scale by the number of bits set.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
f23b12a886 cogl-bitmask: Add _cogl_bitmask_popcount
This returns a population count of all the bits that are set in the
bitmask.

There is now also a _cogl_bitmask_popcount_upto which counts the
number of bits set up to but not including the given bit index. This
will be useful to determine the number of uniform overrides to skip if
we tightly pack the values in an array.

The test-bitmask test has been modified to check these two functions.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
4553ca0695 cogl-pipeline: Add support for setting uniform values
This adds the following new public experimental functions to set
uniform values on a CoglPipeline:

void
cogl_pipeline_set_uniform_1f (CoglPipeline *pipeline,
                              int uniform_location,
                              float value);
void
cogl_pipeline_set_uniform_1i (CoglPipeline *pipeline,
                              int uniform_location,
                              int value);
void
cogl_pipeline_set_uniform_float (CoglPipeline *pipeline,
                                 int uniform_location,
                                 int n_components,
                                 int count,
                                 const float *value);
void
cogl_pipeline_set_uniform_int (CoglPipeline *pipeline,
                               int uniform_location,
                               int n_components,
                               int count,
                               const int *value);
void
cogl_pipeline_set_uniform_matrix (CoglPipeline *pipeline,
                                  int uniform_location,
                                  int dimensions,
                                  int count,
                                  gboolean transpose,
                                  const float *value);

These are similar to the old functions used to set uniforms on a
CoglProgram. To get a value to pass in as the uniform_location there
is also:

int
cogl_pipeline_get_uniform_location (CoglPipeline *pipeline,
                                    const char *uniform_name);

Conceptually the uniform locations are tied to the pipeline so that
whenever setting a value for a new pipeline the application is
expected to call this function. However in practice the uniform
locations are global to the CoglContext. The names are stored in a
linked list where the position in the list is the uniform location.

The global indices are used so that each pipeline can store a mask of
which uniforms it overrides. That way it is quicker to detect which
uniforms are different from the last pipeline that used the same
CoglProgramState so it can avoid flushing uniforms that haven't
changed. Currently the values are not actually compared which means
that it will only avoid flushing a uniform if there is a common
ancestor that sets the value (or if the same pipeline is being flushed
again - in which case the pipeline and its common ancestor are the
same thing).

The uniform values are stored in the big state of the pipeline as a
sparse linked list. A bitmask stores which values have been overridden
and only overridden values are stored in the linked list.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
4e760d51f1 cogl-bitmask: Add _cogl_bitmask_set_flags
This adds a _cogl_bitmask_set_flags function which can be used to copy
the values from a CoglBitmask to an array of unsigned longs which can
be used with the COGL_FLAGS_* macros. The values are or'd in so that
in can be used multiple times to combine multiple bitmasks.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
d2fd168351 cogl-matrix: Add a public cogl_matrix_transpose()
This function takes a single matrix argument and replaces the matrix
with its transpose.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
037c0aa88c Move POPCOUNTL to cogl-util
This moves the POPCOUNTL macro from cogl-winsys-glx to cogl-util and
renames it to _cogl_util_popcountl so that it can be used in more
places. The fallback function for when the GCC builtin is not
available has been replaced with an 8-bit lookup table because the
HAKMEM implementation doesn't look like it would work when longs are
64-bit so it's not suitable for a general purpose function on 64-bit
architectures. Some of the pages regarding population counts seem to
suggest that using a lookup table is the fastest method anyway.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
436a7a45da cogl-boxed-value: Add _cogl_boxed_value_copy
This adds a function to copy one boxed value to another. It is assumed
that the destination boxed value is totally initialised (so it won't
try to free any memory in it).

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
7068849ae6 cogl-boxed-value: Wrap the GL calls in the GE() macro
This wraps all of the calls to glUniform* in the GE() macro so that it
will detect GL errors in the right place.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:11 +00:00
Neil Roberts
256f5791fd cogl-program: Move the code for CoglBoxedValue to its own file
The code for manipulating CoglBoxedValues is now separated from
cogl-program.c into its own file. That way when we add support for
setting uniform values on a CoglPipeline the code for storing the
values can be shared.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:10 +00:00
Neil Roberts
d706991579 cogl-flags: Add some macros to help iterate the bits
This adds some macros to iterate over all the bits set in an array of
flags. The macros are a bit awkward because it tries to avoid using a
callback pointer so that the code is inlined.

cogl_bitmask is now using these macros as well so that the logic can
be shared.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:32:00 +00:00
Neil Roberts
dbc31b70cc cogl-bitmask: Add a return value for the foreach callback
The foreach callback can now return FALSE to stop the iteration.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
f4c1ba9ed9 cogl-flags: Use longs instead of ints
Previously cogl-flags was using an array of ints to store the
flags. There was a comment saying that it would be nice to use longs
but this is awkward because g_parse_debug_flags can only work in
ints. This is a silly reason not to use longs because we can just
parse multiple sets of flags per long. This patch therefore changes
cogl-flags to use longs and tweaks the debug key parsing code.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
2ba4fe417a cogl-bitmask: Use ffsl to speedup bitmask iteration
Instead of testing each bit when iterating a bitmask, we can use ffsl
to skip over unset bits in single instruction. That way it will scale
by the number of bits set, not the total number of bits.

ffsl is a non-standard function which glibc only provides by defining
GNUC_SOURCE. However if we are compiling with GCC we can avoid that
mess and just use the equivalent builtin. When not compiling for GCC
it will fall back to _cogl_util_ffs if the size of ints and longs are
the same (which is the case on i686). Otherwise it fallbacks to a slow
function implementation.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
f0f9493f5c cogl-fixed: Move the GType defs from cogl-util.c to cogl-fixed.c
The boilerplate for defining a GType for CoglFixed lived in
cogl-util.c but this didn't seem to make much sense seeing as nothing
in the cogl-util.h header file relates to CoglFixed and there is
already a separate C file for CoglFixed code. This also removes some
redundant header includes from cogl-util.c

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 16:21:31 +00:00
Neil Roberts
93321d9b89 cogl-bitmask: Use longs instead of ints
Instead of storing only 31 bits in the pointer for a CoglBitmask, it
now assumes it can store a whole unsigned long minus the one bit used
to mark whether it has been converted to a GArray or not. This works
on the assumption that we can cast an unsigned long to a pointer and
back without losing information which I think should be true for any
platforms that Cogl is interested in. This has the advantage that on
64-bit architectures we can store 63 bits before we have to resort to
using a GArray at no extra cost. The values in the GArray are now
stored as unsigned longs as well on the assumption that it is more
efficient to load and store data in chunks of longs rather than ints.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-16 15:43:25 +00:00
Neil Roberts
39ca3e51df Don't take a reference to the last used onscreen framebuffer
Cogl keeps a pointer to the last used onscreen framebuffer from the
context to implement the deprecated cogl_set_draw_buffer function
which can take COGL_WINDOW_BUFFER as the target to use the last
onscreen buffer. Previously this would also take a reference to that
pointer. However that was causing a circular reference between the
framebuffer and the context which makes it impossible to clean up
resources properly when onscreen buffers are used. This patch instead
changes it to just store the pointer and then clear the pointer during
_cogl_onscreen_free as a kind of cheap weak reference.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-14 18:40:28 +00:00
Neil Roberts
5369b3c601 pipeline: Make the backface culling experimental public
This adds two new experimental public functions to replace the old
internal _cogl_pipeline_set_cull_face_state function:

void
cogl_pipeline_set_cull_face_mode (CoglPipeline *pipeline,
                                  CoglPipelineCullFaceMode cull_face_mode);

void
cogl_pipeline_set_front_face_winding (CoglPipeline *pipeline,
                                      CoglWinding front_winding);

There are also the corresponding getters.

https://bugzilla.gnome.org/show_bug.cgi?id=663628

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-14 18:40:27 +00:00
Neil Roberts
8be44f9876 cogl-utils: Include cogl-defines.h
cogl-utils.h needs to include cogl-defines.h so that it knows whether
COGL_HAS_GLIB_SUPPORT is defined.

https://bugzilla.gnome.org/show_bug.cgi?id=663578

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
2011-11-14 18:40:27 +00:00
Chun-wei Fan
91f91dc678 cogl-renderer.c: Fix includes
Only include cogl-xlib-renderer.h when XLIB support is available

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-14 18:37:57 +00:00
Neil Roberts
1566941c2f cogl-context: Destroy texture units later on
This patch moves the call to _cogl_destroy_texture_units() from
_cogl_context_free() to later on. When destroying a GL texture the
texture units are checked. This would end up accessing invalid memory
so we need to try to destroy the texture units only after everything
that might be referencing a texture has been destroyed.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-04 13:03:01 +00:00
Neil Roberts
c637324663 cogl-program: Don't ignore the transpose property of matrix uniforms
When setting a matrix uniform value the transpose property was getting
lost and left uninitialized.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-03 15:50:02 +00:00
Robert Bragg
89731d160e Skip clip flush in _texture_2d_copy_from_framebuffer
Although there was a comment in cogl_texture_2d_copy_from_framebuffer
explaining that we shouldn't flush the clip state, the comment was a bit
miss-leading implying we were going to explicitly set a NULL clip. Also
we weren't actually avoiding flushing the clip state since we were
passing 0 for the CoglDrawFlags.

We now pass COGL_FRAMEBUFFER_FLUSH_SKIP_CLIP_STATE in to the flags when
flushing the framebuffer state and the comment has be updated to explain
that clipping won't affect reading from the framebuffer so we don't need
to flush it.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-03 13:57:06 +00:00
Robert Bragg
e2c758c105 clip: make cogl_clip_ensure a NOP
This api is deprecated and documented to be a NOP which wasn't actually
true. This patch actually updates the function to be a NOP. Its nice
that this gets rid of a point where we flush framebuffer state because
we are looking to add a new VirtualFramebuffer interface which will need
special consideration at each of the points we flush framebuffer state.

It was a mistake that this API was ever published, we don't believe
anyone is using the api but until we break api we have to keep the
symbol. The documented semantics are vague enough that a NOP is ok since
we never explicitly documented how the state would be flushed to GL so
there would be no way to reliably use that state anyway.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-03 13:57:06 +00:00
Rob Bradford
11d38e7ce8 wayland: Port to current Wayland
This change is one logical update to update the Wayland support. This
comprises of the following parts:

* Binding to both the shell and compositor global objects - necessary since
the API for setting top level status moved to the wl_shell interface
* The Wayland visual API went away and instead you setup the EGL surface
appropriately
* The message handling was refined to reflect the current behaviour - now
obsolete comments were removed and new comments updated

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-03 13:57:01 +00:00
Rob Bradford
00ca539845 wayland: Remove unused function
The function force_roundtrip was unused and required API that was
removed from Wayland.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-03 13:52:37 +00:00
Robert Bragg
061ef6ed06 glx: remove miss leading comment
There was a comment implying that if a rgba config has been requested
but no suitable config was found then we would automatically fall back
to an rgb config instead. Actually if no rgba visual is found we simply
fail without any automatic fall back because Cogl is not in a good
position to judge if automatic fall backs are acceptable for higher
level apis such as clutter.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-03 13:52:30 +00:00
Neil Roberts
00f0a66ec9 Use the same number for n_tex_coord_attribs in all linked shaders
On GLES2, we need to specify an array size for the texture coord
varying array. Previously this size would be decided in one of the
following ways:

- For generated vertex shaders it is always the number of layers in
  the pipeline.

- For generated fragment shaders it is the highest sampled texture
  unit in the pipeline or the number of attributes supplied by the
  primitive, whichever is higher.

- For user shaders it is usually the number of attributes supplied by
  the primitive. However, if the application tries to compile the
  shader and query the result before using it, it will always be at
  least 4.

These shaders can quite easily end up with different values for the
declaration which makes it fail to link. This patch changes it so that
all of the shaders are generated with the maximum of the number of
texture attributes supplied by the primitive and the number of layers
in the pipeline. If this value changes then the shaders are
regenerated, including user shaders. That way all of the shaders will
always have the same value.

https://bugzilla.gnome.org/show_bug.cgi?id=662184

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-02 13:50:28 +00:00
Robert Bragg
757916f17a doc: deprecate cogl_texture_get_rowstride()
This documents that cogl_texture_get_rowstride() is deprecated (or
rather it was a mistake that the api was ever published) and also
clarifies the rowstride argument documentation for
cogl_texture_get_data() to explain how it's automatically calculated
when 0 is passed to help avoid misleading people into thinking that
cogl_texture_get_rowstride() is an appropriate way to get a valid
rowstride for that.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-02 13:34:14 +00:00
Rico Tzschichholz
567661ccf3 build: add missing header to fix make dist 2011-11-02 07:34:26 -04:00
Zan Dobersek
d8c47e25f2 Remove inclusion of Xlib headers in Cogl headers
Xlib headers define many trivially named objects which can later cause
name collision problems when only cogl.h header is included in a program
or library. Xlib headers are now only included through including the
standalone header cogl-xlib.h.

https://bugzilla.gnome.org/show_bug.cgi?id=661174

Reviewed-by: Robert Bragg <robert@linux.intel.com>
2011-11-01 15:55:53 +00:00
Robert Bragg
e0344468d8 docs: Adds various missing 2.0 sections and symbols
This adds a number of missing sections and symbols to the experimental
2.0 reference manual.
2011-11-01 12:03:04 +00:00
Robert Bragg
e9075931e3 rectangles: rely on meta-texture api for clamping
Instead of emulating _CLAMP_TO_EDGE in cogl-primitives.c we now defer to
cogl_meta_texture_foreach_in_region() to support _CLAMP_TO_EDGE for us.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
4c49f83056 meta-texture: Support CLAMP_TO_EDGE
cogl_meta_texture_foreach_in_region() now directly supports
CLAMP_TO_EDGE wrap modes. This means the cogl_rectangle code will be
able to build on this and makes the logic accessible to anyone
developing custom primitives that need to support meta textures.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
8cf76ee36b primitive: Add n_indices arg to _set_indices function
When associating indices with a CoglPrimitive you are now forced to
specify the number of indices that should be read when drawing.

It's easy to forget to call cogl_primitive_set_n_vertices() after
associating indices with a primitive (and anyway you can see that someone
could be led to believe Cogl can determine that implicitly somewhow) so
this should avoid a lot of mistakes with using the API.

We'd expect that setting indices and updating the n_vertices property
would go hand in hand 99% of the time anyway so this change should
be more convenient as well as less error prone.

This patch adds some documentation for cogl_primitive_set_indices and
cogl_primitive_get/set_n_vertices. It also tries to clarify how the
CoglPrimitive:n_vertices property is updated and what that property
means in relation to other functions too.

https://bugzilla.gnome.org/show_bug.cgi?id=661019

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
a8fbde4710 doc: Adds some documentation for CoglIndices
This adds just some basic documentation to try and explain what
CoglIndices are useful for.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
98dc73a8f7 spans: avoid normalize with normalize_factor of 1
if a normalize factor of 1 is passed then we don't need to normalize the
starting point to find the closest point equivalent to 0.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
18fb1ffab5 texture: Make CoglSubTexture experimental public api
This exposes cogl_sub_texture_new() and cogl_is_sub_texture() as
experimental public API. Previously sub-textures were only exposed via
cogl_texture_new_from_sub_texture() so there wasn't a corresponding
CoglSubTexture type. A CoglSubTexture is a high-level texture defined as
a sub-region of some other parent texture. CoglSubTextures are high
level textures that implement the CoglMetaTexture interface which can
be used to manually handle texture repeating.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
1ee861a82c framebuffer: adds cogl_framebuffer_get_samples_per_pixel
It's useful to be able to query back the number of
point_samples_per_pixel that may have previously be chosen using
cogl_framebuffer_set_samples_per_pixel().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:03 +00:00
Robert Bragg
90f106117f texture: Make CoglTextureRectangle experimentally public
This exposes CoglTextureRectangle in the experimental cogl 2.0 api. For
now we just expose a single constructor;
cogl_texture_rectangle_new_with_size() but we can add more later.

This is part of going work to improve our texture apis with more
emphasis on providing low-level access to the varying semantics of
different texture types understood by the gpu instead of only trying to
present a lowest common denominator api.

CoglTextureRectangle is notably useful for never being restricted to
power of two sizes and for being sampled with non-normalized texture
coordinates which can be convenient for use a lookup tables in glsl due
to not needing separate uniforms for mapping normalized coordinates to
texels. Unlike CoglTexture2D though rectangle textures can't have a
mipmap and they only support the _CLAMP_TO_EDGE wrap mode.

Applications wanting to use CoglTextureRectangle should first check
cogl_has_feature (COGL_FEATURE_ID_TEXTURE_RECTANGLE).

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
b72f255c0a Start to reduce dependence on glib
Since we've had several developers from admirable projects say they
would like to use Cogl but would really prefer not to pull in
gobject,gmodule and glib as extra dependencies we are investigating if
we can get to the point where glib is only an optional dependency.
Actually we feel like we only make minimal use of glib anyway, so it may
well be quite straightforward to achieve this.

This adds a --disable-glib configure option that can be used to disable
features that depend on glib.

Actually --disable-glib doesn't strictly disable glib at this point
because it's more helpful if cogl continues to build as we make
incremental progress towards this.

The first use of glib that this patch tackles is the use of
g_return_val_if_fail and g_return_if_fail which have been replaced with
equivalent _COGL_RETURN_VAL_IF_FAIL and _COGL_RETURN_IF_FAIL macros.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
fd67ddd56e matrix: check DIRTY_TYPE flag in _cogl_matrix_print
when printing a matrix we aim to print out the matrix type but we
weren't checking the flags first to see if the type is valid. We now
check for the DIRTY_TYPE flag and if not set we also validate the matrix
type isn't out of range.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
a054b53891 matrix: init flags before tmp _translate in _look_at
In cogl_matrix_look_at we have a tmp CoglMatrix allocated on the stack
but we weren't initializing its flags before passing it to
cogl_matrix_translate which meant if we were using COGL_DEBUG=matrices
we would end up trying to print out an invalid matrix type resulting in
a crash when overrunning an array of type names.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
79719347c8 framebuffer: split out CoglOnscreen code
This factors out the CoglOnscreen code from cogl-framebuffer.c so we now
have cogl-onscreen.c, cogl-onscreen.h and cogl-onscreen-private.h.
Notably some of the functions pulled out are currently namespaced as
cogl_framebuffer but we know we are planning on renaming them to be in
the cogl_onscreen namespace; such as cogl_framebuffer_swap_buffers().

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
1a30f4fb15 Adds support for a mirrored repeat wrap mode
This adds COGL_PIPELINE_WRAP_MODE_MIRRORED_REPEAT enum so that mirrored
texture repeating can be used. This also adds support for emulating the
MIRRORED_REPEAT mode via the cogl-spans API so it can also be used with
meta textures such as sliced and atlas textures.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:02 +00:00
Robert Bragg
1d8fd64e1c meta-texture: This publicly exposes CoglMetaTexture
CoglMetaTexture is an interface for dealing with high level textures
that may be comprised of one or more low-level textures internally. The
interface allows the development of primitive drawing APIs that can draw
with high-level textures (such as atlas textures) even though the
GPU doesn't natively understand these texture types.

There is currently just one function that's part of this interface:
cogl_meta_texture_foreach_in_region() which allows an application to
resolve the internal, low-level textures of a high-level texture.
cogl_rectangle() uses this API for example so that it can easily emulate
the _REPEAT wrap mode for textures that the hardware can't natively
handle repeating of.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
c11036cd13 spans: Represent spans with floating point precision
Instead of using integers to represent spans we now use floats instead.
This means we are no longer forced to iterate using non-normalized
coordinates so we should hopefully be able to avoid numerous redundant
unnormalize/normalize steps when using the spans api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
c7098e417d texture-2d-sliced: simplify _foreach_sub_texture_in_region
Since we can assume that all slices are CoglTexture2D textures we don't
need to chain on our implementation of _foreach_sub_texture_in_region
by calling _cogl_texture_foreach_sub_texture_in_region() for each slice.

We now simply determine the normalized virtual coordinates for the
current span inline and call the given callback inline too.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
426c8b8f41 features: Support more than 32 features!
Currently features are represented as bits in a 32bit mask so we
obviously can't have more than 32 features with that approach. The new
approach is to use the COGL_FLAGS_ macros which lets us handle bitmasks
without a size limit and we change the public api to accept individual
feature enums instead of a mask. This way there is no limit on the
number of features we can add to Cogl.

Instead of using cogl_features_available() there is a new
cogl_has_feature() function and for checking multiple features there is
cogl_has_features() which takes a zero terminated vararg list of
features.

In addition to being able to check for individual features this also
adds a way to query all the features currently available via
cogl_foreach_feature() which will call a callback for each feature.

Since the new functions take an explicit context pointer there is also
no longer any ambiguity over when users can first start to query
features.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
c86f698eb9 make COGL_FEATURE_VBOS a private feature
Cogl provides a consistent public interface regardless of whether the
underlying GL driver supports VBOs so it doesn't make much sense to have
this feature as part of the public api.  We can't break the api by
removing the enum but at least we no longer ever set the feature flag.

We now have a replacement private feature flag COGL_PRIVATE_FEATURE_VBOS
which cogl now checks for internally.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00
Robert Bragg
69b44ac86d make COGL_FEATURE_PBOS a private feature
Cogl provides a consistent public interface regardless of whether the
underlying GL driver supports PBOs so it doesn't make much sense to have
this feature as part of the public api.  We can't break the api by
removing the enum but at least we no longer ever set the feature flag.

We now have a replacement private feature flag COGL_PRIVATE_FEATURE_PBOS
which cogl now checks for internally.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-01 12:03:01 +00:00