When running in a purely swrast environment (such as with
LIBGL_ALWAYS_SOFTWARE), the extension is not exposed by mesa,
but wayland is still possible with wl_shm.
https://bugzilla.gnome.org/show_bug.cgi?id=704750
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 8d4e4b0e8062708cece4d4c929abccc492ee21cc)
It was an oversight when making the CoglAtlasTexture api public that we
continued to use the COGL_TEXTURE_INTERNAL_DEFINE macro. This updates
the code to now use COGL_TEXTURE_DEFINE which means the
cogl_is_atlas_texture() function will now be exported in the public api.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
Reviewed-by: Lionel Landwerlin <llandwerlin@gmail.com>
(cherry picked from commit ecbe209f48be80fe45b48f92b277a2aee08d5704)
The recommended usage model for rendering pipelines with minor changes
is to make a copy of a base pipeline just before rendering and then
modify that. The new pipeline can then be used as the base pipeline
for the next paint. Currently this has a known problem when modifying
uniform values in that Cogl won't prune the redundant ancestry and
instead it will end up with an ever-growing chain of pipelines. This
is particularly bad for something like CoglGST where it could also end
up leaking textures for the video frames if the pipelines are used to
render video.
The patch adds a test case for that situation so that we won't forget
about the problem. The test is maked as a known failure. Additionally
the patch adds a similar test for setting the blend constant to
constrast the test with some state that does work correctly.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 2550181543389d6e9e1cb9618d17cd352a0cf9b6)
This reverts the change in semantics for cogl_texture_new_with_size so
that it goes back to allocating textures synchronously and returning
NULL if there was a failure to allocate. Only the new/2.0 texture apis
will have the lazy allocation behaviour so we avoid breaking existing
code. This also fixes a potential crasher by removing a code path
that was passing NULL to cogl_texture_allocate() that would have caused
and abort if there were an error.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
This adds a #define for gl_PointCoord to all shaders so that it can be
accessed with a name in the Cogl namespace.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit c28fc054788e88627bcc2346f4c4c368870ff777)
Previously we would only add the #version pragma to shaders when
point sprite texture coordinates are enabled for a layer so that we
can access the gl_PointCoord builtin. However I don't think there's
any good reason not to just always request GLSL version 1.2 if it's
available. That way applications can always use gl_PointCoord without
having to enable point sprite texture coordinates.
This adds a glsl_version_to_use member to CoglContext which is used to
generate the #version pragma as part of the shader boilerplate. On
desktop GL this is set to 120 if version 1.2 is available, otherwise
it is left at 110. On GLES it is always left as 100.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit e4dfe8b07e8af111ecbcb0da20ff2a2875a2b5d0)
Conflicts:
cogl/driver/gl/gl/cogl-driver-gl.c
The documentation for the builtin varyings for the texture coordinates
was wrongly claiming that the varyings are stored in an array. This
was changed in e55b64a9cdc9 so that each layer gets its own
independent varying.
The documentation was also referring to texture units instead of layer
numbers. The texture units are no longer publicly exposed in the
shaders and instead everything should in theory be expressed in terms
of layer numbers.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit bf6b509c340bdc3be30e1a81fb96710b3176e9dc)
The deprecation macros need to be before the function prototype on
Visual Studio, and is also accepted by GCC.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
Add the symbols that were added to the public Cogl API, and remove the
export of an internal API that was also removed. Unfortunately
_cogl_system_error_quark needs to be exported for the conformance test
programs.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
Cogl-Path was split out from the main Cogl library to become a standalone
library, but many libraries/appplications using Cogl (such as Clutter)
expects that Cogl-Path is still in Cogl. Define
COGL_HAS_COGL_PATH_SUPPORT here, as it will always be needed, at least for
the 1.16 release series, so that builds of items using Cogl would not
break, such as Clutter.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
The autotools variables to substitute for versioning in 1.16 is wrong, so we
have incorrect versioning info during a release as the variables are for
Cogl-2.x. Fix this so we can have the correct versioning info for the
Cogl/Cogl-Pango DLLs during a release.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
The cogl-texture-private.h needs to be included as
_cogl_texture_needs_premult_conversion, so that we can avoid implicit
declaration warnings of that symbol (aka C4013 on MSVC).
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 4afe9dc1fea646e2a9576f9a0dbd1ffafa40485b)
So we don't read an initializes value later on. Caught by valgrind:
Conditional jump or move depends on uninitialised value(s)
_cogl_object_texture_rectangle_indirect_free (cogl-texture-rectangle.c:105)
_cogl_object_context_indirect_free (cogl-context.c:453)
...
main (text.c:149)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 90415aae9495749a2a9e85fb17425a3c7f6a08c8)
Mesa has started getting picky about specifying the precision for
floating types in the fragment shader. We already have a default
precision specifier in all the fragment shaders but apparently this
wasn't working because it is only used when the __VERSION__ define is
100 and Mesa is reporting 110. Regardless of whether Mesa is doing the
right thing or not I think it makes sense to use GL_ES instead of
__VERSION__ because we will also need the precision specifier if we
start requesting GLSL 3.0. The GLES specification explictly states
that GL_ES will only be defined for GLES and this is similar to what
the internal meta shaders do in Mesa.
http://cgit.freedesktop.org/mesa/mesa/commit/?id=cabd45773b58d6aa482
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 37f5205739cfb0745ea74dedaec117081ba0088b)
Since e07d0fc7441 the COGL_DRIVER environment variable was able to
override the application's driver selection. This doesn't seem like a
good idea because if the application is specifying a driver explicitly
then presumably it can not work with any other driver. This patch
changes it so that if a driver is selected in the configuration and by
the application then they must match, otherwise it will fail with a
CoglError.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 4e0942d74c8d69aa48e0176bfecf27f64a950d0f)
Only COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2 affects the driver
selection and all of the the other constraints are only relevant to
the winsys selection. However Cogl was trying to apply all of the
constraints to the driver selection which meant that if any other
constraint was specified then it would always fail. This patch makes
the driver selection filter out all other constraints based on a mask
defined in cogl-renderer-private.h.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit f07febc8913b97fb828e7f2cc2857813af2d3657)
Currently it's only possible to set an onscreen template on a
CoglDisplay by passing a template to cogl_display_new(). For
applications that want to deal with fallbacks then they may want to
replace the onscreen template so this adds a
cogl_display_set_onscreen_template() function.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit f307c9545791dae5472a9568fef6b31b3bf52854)
This updates the static assertion in cogl-renderer.c to only check that
the flags will fit in 32 bits instead of asserting the type has the same
size as an unsigned long.
(cherry picked from commit c6893fa3c9eda0f13b79d3a1fc03f8b79c42a8f6)
WebGL doesn't allow you to separately attach buffers to the
STENCIL_ATTACHMENT and DEPTH_ATTACHMENT framebuffer attachment points
and instead requires you to use the DEPTH_STENCIL_ATTACHMENT whenever
you want a depth and stencil buffer.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit ec7b6360c9c4e45e0b113f9dca7bb1502e7e93be)
This adds a COGL_DRIVER_WEBGL enum and a new driver description for
webgl in cogl-renderer.c. This also adds a COGL_DRIVER_FLAG_OPENGL_WEB
driver flag and a HAVE_COGL_WEBGL define which we can start to use to
handle special cases where webgl differs from gles2.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 2c167b7a4ee56241827322bbe7cb287b0628437c)
This adds a table of driver descriptions to cogl-renderer.c in order of
preference and when choosing what driver to use we now iterate the table
instead of repeating boilerplate checks. For handling the "default driver"
that can be specified when building cogl and handling driver overrides
there is a foreach_driver_description() that will make sure to iterate
the default driver first or if an override has been set then nothing but
the override will be considered.
This patch introduces some driver flags that let us broadly categorize
what kind of GL driver we are currently running on. Since there are
numerous OpenGL apis with different broad feature sets and new apis
may be introduced in the future by Khronos then we should tend to
avoid using the driver id to do runtime feature checking. These flags
provide a more stable quantity for broad feature checks.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit e07d0fc7441dddc3f0a2bc33a6a37d62ddc3efc0)
Add API to allow complex applications using the KMS backend
to go almost straight to direct configuration (which is not possible
because Cogl needs to be in charge of buffers and FB objects).
https://bugzilla.gnome.org/show_bug.cgi?id=705837
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 52fb8e1c33d8c83c731c05cee767928fdd5991d7)
This now updates the guard to ignore whether
COGL_ENABLE_EXPERIMENTAL_2_0_API is defined since we need to work for
clutter which does define that, as well as clutter users that don't.
cogl.h was meant to include cogl-path.h so long as
COGL_ENABLE_EXPERIMENTAL_2_0_API is not defined but it was actually
requiring it to be defined which was breaking clutter applications.
The eglTerminate code in Mesa will try to destroy the wl_drm object
which involves using data structures in the wl_display. Cogl was
disconnecting the display before calling eglTerminate which meant that
this would end up accessing potentially garbage data.
https://bugzilla.gnome.org/show_bug.cgi?id=705591
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 358d85f35d0fe36698b758163729c4551fe5fd25)
The deprecation macros, which expand to __declspec (deprecated) on Visual
Studio, is expected to be before the return type of the function which
is annotated by them, and having the deprecation macros there is also
accepted by GCC as well.
This will fix the builds of all applications/libraries using Cogl under
Visual Studio,
Reviewed-by: Robert Bragg <robert@linux.intel.com>
Add and rename the symbols that have been added/renamed during the
development cycle, and also remove those that have been dropped during the
process.
Also continue the quest of purging from the exports lists of the internal
APIs as some of those are no longer referenced by other Cogl components.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
Unfortunately named initializers is a feature that is not supported by
all compilers (such as pre-2013 Visual Studio) so avoid using that.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 5a5659f9861dfe7a4808f2a5284de8fe6175bec2)
Use the HAVE_STRINGS_H check before we include strings.h, as it is not
universally available.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit ff65144c84a16f9470d3f3931dc91cc9a6ef5938)
...For both the regular WGL winsys and SDL winsys builds, that
COGL_HAS_GTYPE_SUPPORT is defined, so that the builds won't break as
Visual Studio builds do assume an existing installation of GLib.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit ef41aea2796315a47693bf278f08b41ca6703566)
Full GL treats the position attribute specially and requires that it
must be bound to generic attribute location 0 unlike GLES 2.0 or
GL 3.2 core. We now make sure to unconditionally bind the
cogl_position_in attribute to location 0 before linking any glsl program
in cogl.
For reference the relevant part of the GL 3.0 spec that covers these
semantics is Section 2.7 "Vertex Specification" pg 27
After this change there was one remaining problem in
test-custom-attributes where the test_short_verts() test was using its
own "pos" attribute instead of cogl_position_in and so cogl wasn't able
to ensure it would be bound to location 0.
This updates the test to use cogl_position_in but to work around the
fact that glVertexPointer doesn't support UNSIGNED_SHORT components we
force the test to use the glsl backend by setting a shader snippet on
the pipeline.
https://bugs.freedesktop.org/show_bug.cgi?id=67548
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 992ef7b3b49ebb56adde2133bb36330c04133a3f)
This renames cogl_offscreen_new_to_texture to
cogl_offscreen_new_with_texture. The intention is to then cherry-pick
this back to the cogl-1.16 branch so we can maintain a parallel
cogl_offscreen_new_to_texture() function which keeps the synchronous
allocation semantics that some clutter applications are currently
relying on.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit ecc6d2f64481626992b2fe6cdfa7b999270b28f5)
Note: Since we can't break the 1.x api on this branch this keeps a
thin shim around cogl_offscreen_new_with_texture to implement
cogl_offscreen_new_to_texture with its synchronous allocation
semantics.
The API says that it should return NULL on failure but it does not do that
due to the lazy allocation.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=703174
This splits out the cogl_path_ api into a separate cogl-path sub-library
like cogl-pango and cogl-gst. This enables developers to build Cogl with
this sub-library disabled if they don't need it which can be useful when
its important to keep the size of an application and its dependencies
down to a minimum. The functions cogl_framebuffer_{fill,stroke}_path
have been renamed to cogl_path_{fill,stroke}.
There were a few places in core cogl and cogl-gst that referenced the
CoglPath api and these have been decoupled by using the CoglPrimitive
api instead. In the case of cogl_framebuffer_push_path_clip() the core
clip stack no longer accepts path clips directly but it's now possible
to get a CoglPrimitive for the fill of a path and so the implementation
of cogl_framebuffer_push_path_clip() now lives in cogl-path and works as
a shim that first gets a CoglPrimitive and uses
cogl_framebuffer_push_primitive_clip instead.
We may want to consider renaming cogl_framebuffer_push_path_clip to
put it in the cogl_path_ namespace.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 8aadfd829239534fb4ec8255cdea813d698c5a3f)
So as to avoid breaking the 1.x API or even the ABI since we are quite
late in the 1.16 development cycle the patch was modified to build
cogl-path as a noinst_LTLIBRARY before building cogl and link the code
directly into libcogl.so as it was previously. This way we can wait
until the start of the 1.18 cycle before splitting the code into a
separate libcogl-path.so.
This also adds shims for cogl_framebuffer_fill/stroke_path() to avoid
breaking the 1.x API/ABI.
Otherwise, if we try egl-wayland first, we get the environment
variable from that, which crashes mesa trying to open the gbm device
as a wayland display.
https://bugzilla.gnome.org/show_bug.cgi?id=705836
