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>
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>
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>
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>
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>
-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>
-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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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>
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>
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>
