This creates the FP16 shadow framebuffer automatically if the color
transformation from blending space to output space is not identity and
the backend does not claim to implement it on the renderer's behalf.
That makes the weston_output_set_renderer_shadow_buffer() API and
use-renderer-shadow weston.ini option obsolete.
To still cater for the one test that needs to enable the shadow
framebuffer in spite of not needing it for color correct blending, the
quirk it uses now also forces the shadow.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Compile time constants play an important role in keeping the shader
programs fast. Introduce an informal annotation to mark compile time
constants to make the shader code easier to reason with.
This will make much more sense once functions with compile time constant
parameters are added.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Trying to support GL ES 2.0 + extensions along with GL ES 3.0 for better
control is becoming too complicated fast. In this patch you see the
GL_RGBA vs. GL_RBA16F and GL_HALF_FLOAT vs. GL_HALF_FLOAT_OES paths.
More such cases will come, e.g. GL_RED_EXT vs. GL_R32F.
Make things simpler and require GL ES 3.0 +
GL_EXT_color_buffer_half_float for all color management related
functionality. If one doesn't have GL ES 3.0, all you lose is color
management.
Also, all extensions needed by color transformation operations are
gathered under one boolean flag instead of having a flag per extension,
again for simplicity.
This makes the GL ES extension handling much easier.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This reverts commit 36d699a164.
A different way to fix this same issue is the previous commit
"gl-renderer: do not unbind the context on output destroy"
which is needed for other reasons.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
If we make EGL_NO_CONTEXT current, all following GL calls are
no-ops. This will be a problem when gl-renderer introduces
gl_renderer_color_transform containing GL textures and needs to destroy
them when weston_color_transform is destroyed. Mesa would print the the
warning that glDeleteTextures is no-op.
To fix this, keep our GL context current when destroying a GL output.
In case EGL_KHR_surfaceless_context is not available, we must use
dummy_surface.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This creates the color-lcms plugin that in the future will be using
Little CMS as the color matching module, processing ICC profiles, and
producing HDR tone mappings.
Right now, this new plugin is functionally equivalent to the no-op color
manager, except it already links to lcms2 and checks that the renderer
supports color operations.
Color-lcms is a libweston plugin that is loaded with explicit
weston_compositor API. This does not currently allow loading alternative
color manager plugins. External color manager plugins might be
considered in the future when the libweston APIs around color management
stabilize.
This libweston plugin uses the same build option as the old cms-static
Weston plugins, as they both need lcms2. The minimum version for lcms2
was chosen by what Debian Buster provides today and for no other reason.
This plugin intends to support the Wayland CM&HDR protocol extension and
hence sets supports_client_protocol to true. This will expose the
protocol extension to clients when it gets implemented.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This is needed when the compositor produces any content internally:
- the lines in triangle fan debug
- the censoring color fill (unmet HDCP requirements)
Solid color surfaces do not need this special-casing because
weston_surface is supposed to carry color space information, which will
get used in gl_shader_config_init_for_view().
This makes sure the internally produced graphics fit in, e.g on a
monitor in HDR mode.
For now, just ensure there is an identity transformation. Actual
implementations in GL-renderer will follow later.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This is needed when drawing anything internal directly to an output,
like the borders/decorations in a nested compositor setup. This makes
the assumption that the internal stuff starts in sRGB, which should be
safe. As borders are never blended with other content, this should also
be sufficient.
This patch is a reminder that that path exists, rather than a real
implementation. To be implemented when someone needs it.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This is the blending space to monitor space color transform. It needs to
be implemented in the renderers, unless a backend sets
from_blend_to_output_by_backend = true, in which case the backend does
it and the renderer does not.
The intention is that from_blend_to_output_by_backend can be toggled
frame by frame to allow backends to react to dynamic change of output
color profile.
For now, renderers just assert that they don't need to do anything for
output color transform.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
See: https://gitlab.freedesktop.org/wayland/weston/-/issues/467#note_814985
This starts building the framework required for implementing color
management.
The main new interface is struct weston_color_manager. This commit also
adds a no-op color manager implementation, which is used if no other
color manager is loaded. This no-op color manager simply provides
identity color transforms for everything, so that Weston keeps running
exactly like before.
weston_color_manager interface is incomplete and will be extended later.
Colorspace objects are not introduced in this commit. However, when
client content colorspace and output colorspace definitions are
combined, they will produce color transformations from client content to
output blending space and from output blending space to output space.
This commit introduces a placeholder struct for color transforms,
weston_color_transform. Objects of this type are expected to be heavy to
create and store, which is why they are designed to be shared as much as
possible, ideally making their instances unique. As color transform
description is intended to be generic in libweston core, renderers and
backends are expected to derive their own state for each transform
object as necessary. Creating and storing the derived state maybe be
expensive as well, more the reason to re-use these objects as much as
possible. E.g. GL-renderer might upload a 3D LUT into a texture and keep
the texture around. DRM-backend might create a KMS blob for a LUT and
keep that around.
As a color transform depends on both the surface and the output, a
transform object may need to be created for each unique pair of them.
Therefore color transforms are referenced from weston_paint_node. As
paint nodes exist for not just surface+output but surface+view+output
triplets, the code ensures that all paint nodes (having different view)
for the same surface+output have the same color transform state.
As a special case, if weston_color_transform is NULL, it means identity
transform. This short-circuits some checks and memory allocations, but
it does mean we use a separate member on weston_paint_node to know if
the color transform has been initialized or not.
Color transformations are pre-created at the weston_output
paint_node_z_order_list creation step. Currently the z order lists
contain all views globally, which means we populate color transforms we
may never need, e.g. a view is never shown on a particular output.
This problem should get fixed naturally when z order lists are
constructed "pruned" in the future: to contain only those paint nodes
that actually contribute to the output's image.
As nothing actually supports color transforms yet, both renderers and
the DRM-backend assert that they only get identity transforms. This
check has the side-effect that all surface-output pairs actually get a
weston_surface_color_transform_ref even though it points to NULL
weston_color_transform.
This design is inspired by Sebastian Wick's Weston color management
work.
Co-authored-by: Sebastian Wick <sebastian@sebastianwick.net>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
A following patch will need the paint node in
gl_shader_config_init_for_view() for color transformations.
While passing the paint node through, rename the functions to be more
appropriate and get surface/view/output from the paint node.
This is a pure refactoring with no functional change.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
A following patch will need the paint node in draw_view() for color
transformations.
While passing the paint node into draw_paint_node, also use the paint
node. This is a pure refactoring with no functional change.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
When setting a cursor surface, use the surface dimensions, instead of the
weston_surface buffer reference, to check if the surface has any
content. A weston_surface without any buffer reference may in fact
have a buffer which was committed in a previous pointer entry, dropped
by weston_surface and now held only internally by the renderer.
Without this fix, when a pointer enters a surface, the cursor image is
not correctly updated if we set a cursor surface with an already
committed buffer from a previous pointer entry, without recommitting the
cursor buffer for the current entry. This can be seen, for example, in
the experimental Wine Wayland driver which handles the cursor in a way
that leads to the following scenario:
Setup: cursor_surface.attach(buffer) & cursor_surface.commit()
On first wl_pointer.enter: pointer.set_cursor(cursor_surface)
compositor/renderer redraws
wl_pointer.leave
On second wl_pointer.enter: pointer.set_cursor(cursor_surface)
When handling the second pointer.set_cursor() request the current code
doesn't find a buffer attached to the cursor_surface (only the renderer
now has a reference to it), so it doesn't update the respective view for
the cursor.
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Remove all the backend code to support drivers without universal planes.
From[1]:
"The code needed to support kernels where DRM does not support uiniversal
planes makes the DRM-backend a little more complicated, because it needs
to create fake planes for primary and cursor. The lifetimes of the fake
planes does not match the lifetime of "proper" planes, which is surprising."
And since the universal planes left the experimetal flag in 2014[2] it is
safe to remove the support now.
[1] https://gitlab.freedesktop.org/wayland/weston/-/issues/427
[2] https://cgit.freedesktop.org/drm/drm-tip/commit/?id=c7dbc6c9ae5c3baa3be755a228a349374d043b5b
Signed-off-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com>
Fix an issue where the keyboard leds will go out of sync when a new
keyboard is connected.
The issue can be easily reproduced by connecting two keyboards, enabling
caps lock, and reconnecting one of the keyboards. Without the patch the
leds on both keyboards will turn off while the actual caps lock state
will stay enabled.
Signed-off-by: Samu Nuutamo <samu.nuutamo@gmail.com>
Fixes a definitely lost:
== 56 bytes in 1 blocks are definitely lost in loss record 16 of 45
== at 0x48450F8: malloc (vg_replace_malloc.c:309)
== by 0x4B55E93: wl_event_loop_add_timer (event-loop.c:197)
== by 0x4126CF: weston_compositor_create (in /usr/local/bin/weston)
== by 0x409997: main (in /usr/local/bin/weston)
Signed-off-by: Lujin Wang <luwang@nvidia.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Layers did not have a fini sequence before, which means the compositor
layer list might have stale pointers temporarily when shutting down. A
bigger problem might be having views linger after the destruction of the
layer.
These problems were not observed yet, but if they exist, this patch
should help to find them and then fix them.
The check in weston_compositor_shutdown() is not an assert yet, because
it will trigger until all components call weston_layer_fini() correctly.
Some components do not even have a tear-down function to call it from at
all, like fullscreen-shell.
The same with the check in weston_layer_fini().
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
These are all the remaining places that still use the global view_list,
and cannot avoid it. Add a comment to explain why in each.
Now all places that use view_list have been audited for paint node
lists.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Iterate paint nodes instead of the global view list. Right now this does
not change behavior.
This is a step towards using per-output view lists that can then be
optimized for the output in libweston core.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Iterate paint nodes instead of the global view list. Right now this does
not change behavior.
This is a step towards using per-output view lists that can then be
optimized for the output in libweston core.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Iterate paint nodes instead of the global view list. Right now this does
not change behavior.
This is a step towards using per-output view lists that can then be
optimized for the output in libweston core.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Iterate paint nodes instead of the global view list. Right now this does
not change behavior.
This is a step towards using per-output view lists that can then be
optimized for the output in libweston core.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Iterate paint nodes instead of the global view list. Right now this does
not change behavior.
This is a step towards using per-output view lists that can then be
optimized for the output in libweston core.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This patch creates a per-output paint node list in the same z-order as
the global view_list in weston_compositor.
The next step is to switch output repaints and backends to use the
z-order list instead of view_list.
Having a per-output paint node list for repaints allows including only
those paint nodes that actually contribute to the output image, so that
completely occluded and out-of-screen views can be ignored in libweston
core already.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This new object is created for every surface-view-output triplet. As
there is always exactly one surface for a view and it does not change
during a view's lifetime, this is really for a view-output pair or a
surface-output pair.
The object is created on-demand as a part of preparing for an output
repaint, so it applies only to surfaces that are going through repaint.
A prerequisite for that is that the surface is mapped, which means it
has a mapped view.
When any one of surface or view gets destroyed or output gets disabled,
all related paint nodes are destroyed.
In future, paint node will be useful for caching surface-output or
view-output pair dependent data:
- damage regions for overlapping outputs
- color transformations
- backend-specific bookkeeping (e.g. DRM KMS plane assigments)
- per-output repaint lists
- surface geometry transformed into output space
Suggested by Daniel Stone in
https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/582#note_899406
PS. The call in weston_view_destroy() to
weston_compositor_build_view_list() might be so that if the view has
sub-surfaces, rebuilding the view list removes those those too and
automagically deletes their views.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Use the real name of the seat instead of calling each seat 'default'. This makes
it easier to identify the current seat in a multi-seat environment.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
This change fixes the "touch-up" operation to clear "data_source"
by setting "seat" to NULL. This operation is done in the mouse button
release operation, but seems to have been forgotten in the "touch up"
case.
Forgetting this operation causes weston to send a "premature finish
request" error to the client which causes the client to exit.
This issue can be reproduced with the "weston-dnd" program by performing
a drag-and-drop operation with a touch input device. Once the drag
is released, the weston-dnd program will exit with an error.
Signed-off-by: Jonathan Marler <johnnymarler@gmail.com>
If sprites_are_broken, then we will only ever arrive in renderer_only
mode, so this case will be caught by the checks above.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Avoids an user-after-free when destroying the surface, like in the
following ASAN message:
==25180==ERROR: AddressSanitizer: heap-use-after-free on address 0x6060000589d8 at pc 0x7ff70a4f7102 bp 0x7fff8f7e13b0 sp 0x7fff8f7e13a8
READ of size 8 at 0x6060000589d8 thread T0
#0 0x7ff70a4f7101 in weston_schedule_surface_protection_update ../libweston/compositor.c:1163
#1 0x7ff70a4f743b in weston_surface_update_output_mask ../libweston/compositor.c:1212
#2 0x7ff70a4f7a47 in weston_surface_assign_output ../libweston/compositor.c:1298
#3 0x7ff70a4f7f44 in weston_view_assign_output ../libweston/compositor.c:1348
#4 0x7ff70a4fa12f in weston_view_update_transform ../libweston/compositor.c:1589
#5 0x7ff70a4ffc20 in view_list_add ../libweston/compositor.c:2657
#6 0x7ff70a5000ee in weston_compositor_build_view_list ../libweston/compositor.c:2688
#7 0x7ff70a4fd577 in weston_view_destroy ../libweston/compositor.c:2202
#8 0x7ff70a4fd7df in weston_surface_destroy ../libweston/compositor.c:2239
#9 0x7ff70a4fdbb0 in destroy_surface ../libweston/compositor.c:2285
#10 0x7ff70a4a2d3e in destroy_resource ../src/wayland-server.c:723
#11 0x7ff70a4a8940 in for_each_helper ../src/wayland-util.c:372
#12 0x7ff70a4a8e1f in wl_map_for_each ../src/wayland-util.c:385
#13 0x7ff70a4a3748 in wl_client_destroy ../src/wayland-server.c:882
#14 0x7ff6fe04e866 in shell_destroy ../desktop-shell/shell.c:5004
#15 0x7ff70a4ee923 in wl_signal_emit /home/mvlad/install-amd64/include/wayland-server-core.h:481
#16 0x7ff70a51598d in weston_compositor_destroy ../libweston/compositor.c:7903
#17 0x7ff70a903a58 in wet_main ../compositor/main.c:3493
#18 0x560de7b3b179 in main ../compositor/executable.c:33
#19 0x7ff70a73ecc9 in __libc_start_main ../csu/libc-start.c:308
#20 0x560de7b3b099 in _start (/home/mvlad/install-amd64/bin/weston+0x1099)
0x6060000589d8 is located 56 bytes inside of 64-byte region [0x6060000589a0,0x6060000589e0)
freed by thread T0 here:
#0 0x7ff70a9d3b6f in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.6+0xa9b6f)
#1 0x7ff70a5167d2 in cp_destroy_listener ../libweston/content-protection.c:193
#2 0x7ff70a4ee923 in wl_signal_emit /home/mvlad/install-amd64/include/wayland-server-core.h:481
#3 0x7ff70a51598d in weston_compositor_destroy ../libweston/compositor.c:7903
#4 0x7ff70a903a58 in wet_main ../compositor/main.c:3493
#5 0x560de7b3b179 in main ../compositor/executable.c:33
#6 0x7ff70a73ecc9 in __libc_start_main ../csu/libc-start.c:308
previously allocated by thread T0 here:
#0 0x7ff70a9d4037 in calloc (/usr/lib/x86_64-linux-gnu/libasan.so.6+0xaa037)
#1 0x7ff70a5160aa in zalloc ../include/libweston/zalloc.h:38
#2 0x7ff70a516cda in weston_compositor_enable_content_protection ../libweston/content-protection.c:329
#3 0x7ff7070247e0 in drm_backend_create ../libweston/backend-drm/drm.c:3180
#4 0x7ff707024cae in weston_backend_init ../libweston/backend-drm/drm.c:3250
#5 0x7ff70a515d02 in weston_compositor_load_backend ../libweston/compositor.c:7999
#6 0x7ff70a8fbcfb in load_drm_backend ../compositor/main.c:2614
#7 0x7ff70a900b46 in load_backend ../compositor/main.c:3103
#8 0x7ff70a902ecd in wet_main ../compositor/main.c:3380
#9 0x560de7b3b179 in main ../compositor/executable.c:33
#10 0x7ff70a73ecc9 in __libc_start_main ../csu/libc-start.c:308
SUMMARY: AddressSanitizer: heap-use-after-free ../libweston/compositor.c:1163 in weston_schedule_surface_protection_update
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Weston internals and Wayland clients assume that output presentation
clock cannot go backwards. Therefore require unconditionally that KMS
uses the monotonic clock.
The kernel unconditionally supports DRM_CAP_TIMESTAMP_MONOTONIC. See:
commit 25e1a79874eb3821d93310c908cc0a81b47af060
Author: Arnd Bergmann <arnd@arndb.de>
Date: Wed Oct 11 17:20:13 2017 +0200
drm: vblank: remove drm_timestamp_monotonic parameter
That one removed the final possibility of DRM_CAP_TIMESTAMP_MONOTONIC
being false, by removing the module option. But even before that, all
drivers have been supporting monotonic, since
commit c61eef726a78ae77b6ce223d01ea2130f465fe5c
Author: Imre Deak <imre.deak@intel.com>
Date: Tue Oct 23 18:53:26 2012 +0000
drm: add support for monotonic vblank timestamps
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This drops the software presentation clocks that could jump backwards.
See the previous commit "libweston: assert frame times never go
backwards" for the rationale.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Adding this check was prompted by
https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/609
There is no reason to allow frame times jump backwards, and apparently
we already have code that makes that assumption.
DRM KMS uses CLOCK_MONOTONIC as the vblank and page flip timestamps,
which by definition cannot go backwards. Other backends call
weston_compositor_set_presentation_clock_software().
Frame times are also reported directly to Wayland clients via
presentation-time extension, and clients too will not expect that the
timestamp could go backwards.
So make sure time can never go backwards.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
As observed in #420 (Running Weston under Weston's kiosk shell with
multiple outputs causes the scrollback to go nuts), not
being able to cope with (a correct) resize of the parent surface would
cause the client weston instance to spin forever. If dispatching
failed, just exit.
Fixes#420
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
As an in-flight resize call might cause a call to
wayland_output_destroy_shm_buffers() to go over a list of free_buffers
list. Just initialize the lists before attempting to create the parent
surface to avoid it.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
fb->format is *pixel_format_info, whereas fb->format->format is the
actual DRM/wl_shm format code we want to see here. Fix the drm_debug()
call accordingly.
Signed-off-by: Bastian Krause <bst@pengutronix.de>
In "backend-drm: simplify compile time array copy", ARRAY_COPY was
introduced to be used by the DRM-backend.
In this patch we expand its usage to other code where hardcoded arrays
are being copied.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In drm_fb_get_from_dmabuf() we have some compile time array copies, and
multiple static_assert() calls are needed (for safety). This makes the
code unpleasant to read.
Add ARRAY_COPY macro, to simplify the code.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
EGL implementations have no way to tell that implicit modifiers are not
supported. So Weston must consider that implicit modifiers are
supported. Always add DRM_FORMAT_MOD_INVALID to formats that we query
from EGL.
The implication is that clients using dmabuf extension may pick
DRM_FORMAT_MOD_INVALID to allocate their buffers, and so these buffers
will not be directly imported to KMS and placed in planes. See commit
"backend-drm: do not import dmabuf buffers with no modifiers to KMS" for
more details.
But we should not avoid advertising DRM_FORMAT_MOD_INVALID in the dmabuf
protocol just because we hope that the client don't choose it, it's not
our choice.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In commit "libweston: add struct weston_drm_format" struct
weston_drm_format and its helper functions were added to libweston.
The functions query_dmabuf_formats and query_dmabuf_modifiers are very
specific to GL-renderer and its internals. So instead of exposing them
in libweston, query and store DRM formats and modifiers internally in
GL-renderer. Also, add a vfunction to struct weston_renderer in order
to retrieve the formats.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In commit "backend-drm: do not import dmabuf buffers with no modifiers
to KMS" we've stopped to import dmabuf with no modifiers to KMS.
In this patch we document why we can still import wl_drm buffers with no
modifiers to KMS.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
We can't tell the layout of a buffer that has been allocated with no
modifiers. Although usually drivers use linear layouts to allocate in
these cases, it is not a rule. It can use a tiling layout, for instance,
under the hood.
So it is not safe to import a buffer with no modifiers to KMS, as it
can't tell the buffer layout and this may result in garbage being
displayed. In this patch we start to require explicit modifiers to
import buffers to KMS.
In most cases things just work as expected, but just because both sides
(display and render driver) usually end up using the linear layout when
modifiers are not exposed. It also works on systems where the display
and render devices are tied (desktops with Intel or AMD, for instance),
as there's only one driver and it knows the layout of the buffer (no
need to guess).
But in SoC's where the display and render device are split, things can
go wrong. It is better to lose performance and not break things. To
solve the problem, drivers should be updated to expose modifiers (even
if only DRM_FORMAT_MOD_LINEAR), as the concept of implicit modifiers is
the root of the problem.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In commit "backend-drm: add DRM_FORMAT_MOD_INVALID to modifier sets when
no modifiers are supported" we've changed the code that iterates through
the IN_FORMATS blob property. Now it adds DRM_FORMAT_MOD_INVALID for
formats exposed without modifiers.
But the thing is that there shouldn't be formats in the IN_FORMATS blob
exposed without modifiers, as the blob has been added after the
introduction of the explicit modifiers API in the kernel. For now,
there's nothing in the kernel to ensure this correct behavior. So
instead of adding DRM_FORMAT_MOD_INVALID in this case, ignore these
formats, as userspace can't do much in this case.
In the future this may be fixed by the kernel. Or maybe the following MR
in libdrm, which adds an iterator API for the IN_FORMATS blob:
https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/146
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
From now on, when we can't know the modifiers supported for a certain
format, we add DRM_FORMAT_MOD_INVALID to its modifier set.
There is some parts where nothing is being added an others where
DRM_FORMAT_MOD_LINEAR is being added, so fix them.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In create_gbm_surface() we may allocate with no modifiers in the
following situations:
1. old GBM version, so HAVE_GBM_MODIFIERS is false;
2. the KMS driver does not support modifiers;
3. if allocating with modifiers failed, what can happen when the KMS
display device supports modifiers but the GBM driver does not, e.g.
the old i915 Mesa driver.
The comment was only stating the third situation, so add the other two.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
The function drm_output_init_egl() is too big, so move the code to
create the gbm surface to a separate function: create_gbm_surface().
Also made some minor style changes to the code that has been moved, in
order to improve readability.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In commit "libweston: add struct weston_drm_format" struct
weston_drm_format and its helper functions were added to libweston.
Also, unit tests for this API have been added in commit "tests: add unit
tests for struct weston_drm_format".
Start to use this API in the DRM-backend, as it enhances the code by
avoiding repetition and ensuring correctness.
Signed-off-by: Scott Anderson <scott.anderson@collabora.com>
Co-authored-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Add struct weston_drm_format, which contains a DRM format and a list of
modifiers. The patch also adds struct weston_drm_format_array and some
helper functions to handle these two new structs: init/fini, find
elements, add elements, etc.
This will be useful in the next commits in which we add support to
dmabuf-hints. It also allows a cleanup in the DRM-backend, where we
currently have a similar struct in drm_plane but with no helper
functions, so the code to handle it is scattered throughout the
functions and there is a lot of repetition.
This patch is based on previous work of Scott Anderson (@ascent).
Signed-off-by: Scott Anderson <scott.anderson@collabora.com>
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In drm_output_prepare_plane_view() we iterate the list of planes and add
them as candidates to promote the view to one of them.
Cursor planes do not support buffers other than wl_shm (at least for
now). So when we have a dmabuf or an EGL buffer in the view, the
function drm_output_plane_cursor_has_valid_format() returns false and
the cursor plane is not added to the candidate list.
In this patch we move the responsibility of doing this from
drm_output_plane_cursor_has_valid_format() to
drm_output_prepare_plane_view() itself, as the incompatibility between
other types of buffers and cursor planes is different from the
incompatibility between formats. This makes the code easier to read
and also documents the current incompatibility between cursor planes
and buffers that are not created through wl_shm.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
In the absence of universal planes support,
drm_output_find_special_plane() sets the plane format to zero as a
placeholder. Then in drm_output_init_planes() it sets the format to
output->gbm_format.
As output->gbm_format is already set by the time we call
drm_output_find_special_plane(), simply set the plane format to it
directly in this function. This makes the code clearer, as there is no
reason to use the placeholder.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
get_vt is used to check if VTs are enabled, by verifying that a VT greater than
0 is returned.
libseat always implements switching, with switch to an active session
currently being a noop in all backends. libseat does not currently have
a get_vt implementation. Make get_vt errors more explicit, and allow VT
switching anyway if the error is ENOSYS.
Signed-off-by: Kenny Levinsen <kl@kl.wtf>
This adds support for libseat as a seat backend. libseat provides seatd,
(e)logind and direct seat backends as compile-time and runtime options.
The backend is currently disabled by default. It can be enabled through the
launcher-libseat option.
Signed-off-by: Kenny Levinsen <kl@kl.wtf>
In some situations, like positioning a sub-surface that exceeds the
output's dimensions we would adjust the plane state dimensions to some
lower values to that of the buffer. That would ultimately trip the cursor
update function because the buffer itself actually exceeds the maximum
size/dimension of the cursor.
The plane state destination co-ordinates is the area of the view which
is visible on the output, which in some situations, would actually be
smaller than the original buffer dimensions (making it so that it will
pass the cropping/scaling check), but depending on of
how large is the surface buffer, it would tripping the assert wrt to
cursor width/height dimensions.
This hasn't been seen so far due to the fact that until recently we had
a cursor surface that always reached the cursor plane and that was
already being set-up by default (with desktop-shell, which is no longer
the case), and also because kiosk-shell, which doesn't set-up a cursor
surface, was not available.
This adds a check to skip placing the view in the cursor plane if the
buffer dimensions exceed the cursor permitted width/height.
(Suggested-by Daniel Stone).
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
fixes issue #484 (race condition with message to/from weston launch)
The race condition occurs after weston sends the WESTON_LAUNCHER_OPEN
message to weston-launch. The race is between when weston-launch replies
with the fd handle versus weston-launch sending an activation message. If
weston-launch sends an activation message before sending the fd handle,
then weston will be in an invalid state.
To fix this, I modified the fd handle reply that weston-launch sends to
include a message id at the beginning, which I called
WESTON_LAUNCHER_OPEN_REPLY. Along with this, weston now inspects the
first part of any reply to determine whether it is an activation message
or a reply to the OPEN message. In the newly handled case that it's an
activation message, it tracks whether the latest result is a deactivate
message and stores it in a flag to be handled once the open function has
completed.
Signed-off-by: Jonathan Marler <johnnymarler@gmail.com>
Now that pieces of color management implementation start to land, the
fallback shader becomes even more special than before. It is the only
case where the compositor ignores color management.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
The texture target can be uniquely inferred from the shader variant, so
do not store texture target separately.
Shortens the code a bit.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Replace the shader_requirements with just shader_variant. The variant is
the only thing gl_surface_state will actually carry. All the other
requirements fields are always unused.
Co-authored-by: Sebastian Wick <sebastian@sebastianwick.net>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This patch gathers all values to be loaded to shader uniforms into a new
struct gl_shader_config along with texture target and filter
information. Struct gl_shader becomes opaque outside of gl-shaders.c.
Everything that used or open-coded these are converted.
The aim is to make gl-renderer.c easier to read. Previously, uniform
values were loaded up in various places, texture units were set up in
one place, textures were bound into units in different places. Stuff was
all over the place.
Now, shader requirements and associated uniform data is stored in a
single struct. The data is loaded into a shader program in one function
only.
That makes it easy for things like maybe_censor_override() to replace
the whole config rather than poke only the shader requirements. This may
not look like much right now, but when color management adds more
uniforms and even hardcoded color need to go through the proper color
pipeline, doing things the old way would become intractable.
Similar simplification can be seen in draw_view(), where the RGBA->RGBX
override becomes more contained. There is no longer a need to "pre-load"
the shader used by triangle fan debug. Triangle fan debug no longer
needs to play tricks with saving and restoring the current shader.
The real benefit of this change will probably come when almost all
shader operations need to take color spaces into account. That means
filling in gl_shader_config parts based on a color transformation.
This is based on an idea Sebastian already used in his Weston color
management work.
Co-authored-by: Sebastian Wick <sebastian@sebastianwick.net>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Avoid looking up 'gr' from view->compositor by passing it explicitly
into the functions needing it.
Also fixes the whitespace in repaint_region() signature.
Clarifies code by removing local variables, but also future changes will
need 'gr' more.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
A future change will call this function from draw_view(), so move it
upwards to avoid adding a function declaration.
No functional or even cosmetic change.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
These functions are related to shaders, so they are more at home in
gl-shaders.c. gl-renderer.c is too long already.
This allows making a couple functions static while the moved functions
become non-static. Future changes turn some of these functions into
static again, with the ultimate goal of making struct gl_shader opaque.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Tearing down the drm-backend when there are no input devices, would call
for the gbm device destruction before compositor shutdown. The latter
would call into the renderer detroy function and assume that the
EGLDisplay, which was created using the before-mentioned gbm device, is
still available. This patch re-orders the gbm destruction after the
compositor shutdown when no one would make use of it.
Fixes: #314
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Suggested-by: Daniel Stone <daniel.stone@collabora.com>
Everywhere else uses #ifdef, this used just #if. When the next commit
adds -Wundef to the compiler options, this #if here will start failing
as ENABLE_EGL is undefined.
It would be much better to use Meson's set10() for ENABLE_EGL and change
all #ifdef into #if, but I opted for the smaller change for now.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This adds a heuristic for freeing shader programs that have not been
needed for a while. The intention is to stop Weston accumulating shader
programs indefinitely, especially in the future when color management
will explode the number of possible different shader programs.
Shader programs that have not been used in the past minute are freed,
except always keep the ten most recently used shader programs anyway.
The former rule is to ensure we keep shader programs that are actively
used regardless of how many. The latter rule is to prevent freeing too
many shader programs after Weston has been idle for a long time and then
repaints just a small area. Many of the shader programs could still be
relevant even though not needed in the first repaint after idle.
The numbers ten and one minute in the above are arbitrary and not based
on anything.
These heuristics are simpler to implement than e.g. views taking
references on shader programs. Expiry by time allows shader programs to
survive a while even after their last user is gone, with the hope of
being re-used soon. Tracking actual use instead of references also
adapts to what is actually visible rather than what merely exists.
Keeping the shader list in most recently used order might also make
gl_renderer_get_program() more efficient on average.
last_repaint_start time is used for shader timestamp to avoid calling
clock_gettime() more often. Adding that variable is an ABI break, but
libweston major has already been bumped to 10 since last release.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This is useful for seeing that the shader program garbage collection
works in a future patch.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
One more thing is coming to need this, so add the compositor pointer and
migrate existing places to use it where it simplifies things.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
I have verified that the conversion here follows ITU-R BT.601 except for
the offsets 16/256 and 128/256 which should be 16/255 and 128/255
respectively.
I used to following octave script to verify this:
rf = 0.299;
gf = 0.587;
bf = 0.114;
crdiv = 1.402;
cbdiv = 1.772;
M = [ rf, gf, bf ;
-rf / cbdiv, -gf / cbdiv, (1 - bf) / cbdiv;
(1 - rf) / crdiv, -gf / crdiv, -bf / crdiv ];
YCbCr = [ 'Y'; 'Cb'; 'Cr' ];
RGB = [ 'R'; 'G'; 'B' ];
eq = [ ' '; '='; ' ' ];
l = [ ' [ '; ' [ '; ' [ ' ];
r = [ ' ] '; ' ] '; ' ] ' ];
mat = [
sprintf('%9f %9f %9f', M(1,:));
sprintf('%9f %9f %9f', M(2,:));
sprintf('%9f %9f %9f', M(3,:));
];
[ l YCbCr r eq l mat r l RGB r ]
R = inv(M);
mat = [
sprintf('%9f %9f %9f', R(1,:));
sprintf('%9f %9f %9f', R(2,:));
sprintf('%9f %9f %9f', R(3,:));
];
[ l RGB r eq l mat r l YCbCr r ]
[ R(:,1), R(:,2:3) .* (255/224) ]
The final matrix printed is what the shader uses down to +/- one digit,
so at least 7 correct decimals.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Sampling input texture has nothing to do with view alpha. This clarifies
the code structure.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Reading the input texture is just one part of the future color pipeline,
so separate it into a function of its own. This makes it easier to add
more steps to the pipeline, and shows the green tint is separate as
well.
Making use of early returns, reducing the if-else ladder should help
with readability. Sharing the call to yuva2rgba() likewise.
Setting yuva.w = alpha is not shared though, in case support for AYUV
format might be added in the future.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Do not call texture2D() in the shader when we already have the result.
Simpler code, maybe even a little bit faster?
Suggested-by: Harish Krupo <harishkrupo@gmail.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
These same magic constants were used in all cases, so move them into a
common place.
While we are touching all these lines, also change from the four floats
into a vec4. This allows further clean-up in the next patch.
This makes the code easier to read.
Behavior and results are unchanged.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Mathematically the result is the same, while multiplying RGB with alpha
is easier to understand as correct than the earlier form.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
A more unique name is easier to grep for. Using 'color' as a local
variable might be useful in the future.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This support is added so that the XYUV shader variant can be tested with
wl_shm from the test suite.
Libwayland version requirement is bumped to get WL_SHM_FORMAT_XYUV8888.
Libwayland is bumped to 1.18 too in the CI image. libwayland-dev package
is dropped, because we build wayland anyway.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This header is for sharing fallback definitions for drm_fourcc.h. A new
test in tests/yuv-buffer-test.c is going to be needing XYUV8888 format,
and more new formats will be expected with HDR supports.
Share these fallback definitions in one place instead of copying them
all over.
All users of drm_fourcc.h are converted to include weston-drm-fourcc.h
instead for consistency: have the same definitions available everywhere.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
MOD_INVALID came with libdrm 2.4.83 and MOD_LINEAR came with libdrm
2.4.82. libweston unconditionally depends on libdrm >= 2.4.95, so the
fallback is not necessary.
Since linux-dmabuf.h itself has no use for these and also forgets to
include drm_fourcc.h, .c files including drm_fourcc.h after this header
would trigger compiler warnings.
linux-dmabuf.c does need these, so add the proper include.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
These were introduced in libdrm 2.4.68, commit
268ae7cae5afd76462c3ef14ed9021a2d40c2e57. Weston unconditionally
requires libdrm >= 2.4.95, so these fallback definitions are
unnecessary now.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Extend the existing output-damage test to test
blit_shadow_to_output() specifically. This function had problems
originally, so make sure they can't reappear.
The added quirk is explained in the test.
An additional check of the quirk in gl_renderer_output_create() ensures
that the shadow framebuffer is really used. The test could false-pass if
the shadow is not used.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Proper color management will need blending done with linear light pixel
values, that is, EOTF applied before blending, and then inverse-EOTF
applied for scanout after blending. The simplest way to set that up is
to use an intemediate framebuffer a.k.a shadow buffer containing the
composited image in linear light values, then blit from that to the
actual framebuffer.
This patch implements the shadow buffer, but the linear light
blending is left for another patch. This allows GL-renderer to turn
WESTON_CAP_COLOR_OPS on.
Half-float is chosen as the buffer format because linear light values
require more bits to encode with sufficient precision than the usual
non-linear pixel values.
v2: Use /* */ instead of // (Pekka)
Rename fbo and tex to shadow_{fbo,tex} (Pekka)
Check for OpenGLES capabilities before creating
shadow_{tex,fbo} (Pekka)
Signed-off-by: Harish Krupo <harishkrupo@gmail.com>
v3: Rebased.
Simplified GL version checks (Sebastian)
Apply changes from "libweston: add color ops cap and bool renderer
shadow buffer"
Renamed supports_half_float_texture to has_gl_half_float to
follow the existing naming pattern.
Introduce gl_renderer_create_shadow_16f().
Undo moving of glViewport() call.
Replace half_float_texture_enabled with shadow_exists().
Introduce struct gl_output_state_shadow.
Assert no resizing with shadow.
Fix triangle fan debug.
Rename repaint_from_texture() to blit_shadow_to_output().
Rewrite commit message because linear light blending is not
implemented in this patch.
Fix blit_shadow_to_output() for scaled/transformed outputs and
remove redundant code.
Fix has_gl_half_float determination.
v4: Disable blending in blit_shadow. (Daniel)
Port to gl_renderer_get_program().
Make a generic fbo-texture struct with parameterized format. (Daniel)
Change has_gl_half_float into gl_half_float_type.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Converting a region from global coordinates to output pixel coordinates
will become useful in GL-renderer soon, so move this function to be
shared. It is tricky to reinvent.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This adds the libweston capability bit for "color operations" which
refers to a renderer's support for operations needed for color
management. GL-renderer will grow the support while Pixman-renderer will
not, which is why the cap is needed.
To make an example use of the cap, this also adds new API:
weston_output_set_renderer_shadow_buffer(). This is a temporary API to
enable future experimental features. The first such feature will be the
renderer internal shadow buffer, the boolean variable for it taken from
Harish Krupo's "weston.ini: introduce use-shadow-fbo in output config".
Obviously this patch does not implement the renderer shadow buffer. No
renderer sets WESTON_CAP_COLOR_OPS yet so trying to enable it will fail.
The documentation here is deliberately vague, because the bits needed
for color management will come in trickling for a long time until we can
call it color management in any sense. Until then, the temporary API
shall remain, perhaps poorly named.
Cc: Harish Krupo <harishkrupo@gmail.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This helps accounting how many shaders live in the cache, what the
shader source code is, and when shaders are compiled.
Signed-off-by: Harish Krupo <harishkrupo@gmail.com>
v2: Resolved rebase conflicts.
Put shader_scope in struct gl_renderer, remove struct
gl_shader_generator.
Wrote commit message.
Rebased for "gl-renderer: rewrite fragment shaders" which completely
changed how shader sources are generated.
Added cache statistics to debug output on subscribe.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Various functions leave the current active texture as whatever. The
functions touched in this commit forgot to reset the active texture to
slot 0 before binding their textures. If not explicitly unbound, this
could leave textures lingering in unused slots, perhaps. Not sure if
that could cause any harm, but for consistency's sake, always use slot 0
when not multitexturing.
Found by code inspection.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
If shader compiling on demand fails, then rather than using whatever
random shader happens to be current, use an explicit fallback shader
painting stuff brown.
The color is chosen dim enough to hopefully not cause problems even in
a HDR setting as it will be written verbatim into the fb/shadow.
This also prevents NULL dereference on shader->key.variant in
draw_view().
One way to test this shader is to hack fragment.glsl:
#if DEF_VARIANT == SHADER_VARIANT_EXTERNAL
#extension GL_OES_EGL_image_external : require
+#error haa haa
#endif
and then run e.g. weston-simple-dmabuf-v4l -f YUYV
with vivid kernel module loaded. This worked on Intel.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
If we are trying to use a NULL shader, it is likely that the shader
compilation failed for some reason. Since we are trying this for a view,
the failure was probably triggered by a client. If there is a client,
get rid of it by sending it a protocol error. Hopefully the compositor
can then continue operation after a glitch on screen.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This patch modifies the shader generation code so that the shaders are
stitched together based on the requirement instead of creating them
during initialization. This is necessary for HDR use cases where each
surface would have different properties based on which different
de-gamma or tone mapping or gamma shaders are stitched together.
v2: Use /* */ instead of // (Pekka)
Move shader strings to gl-shaders.c file (Pekka)
Remove Makefile.am changes (Pekka)
Use a struct instead of uint32_t for storing requirements (Pekka)
Clean up shader list on destroy (Pekka)
Rename shader_release -> shader_destroy (Pekka)
Move shader creation/deletion into gl-shaders.c (Pekka)
Use create_shaders's multi string capbility instead of
concatenating (Pekka)
v3: Add length check when adding shader string (Pekka)
Signed-off-by: Harish Krupo <harishkrupo@gmail.com>
v4: Rebased, PROTECTION_MODE_ENFORCED converted.
Dropped unnecessary { }.
Ported setup_censor_overrides().
Split out moving code into gl-shaders.c.
Changed to follow "gl-renderer: rewrite fragment shaders",
no more shader source stitching.
Added SHADER_VARIANT_XYUV.
Const'fy function arguments.
Added gl_shader_requirements_cmp() and moved the early return in
use_gl_program().
Moved use_gl_program() before first use in file.
Split solid shader requirements by use case: requirements_censor and
requirements_triangle_fan.
Simplified fragment_debug_binding() since no need to force anything.
Ensure struct gl_shader_requirements has no padding. This allows us
to use normal C syntax instead of memset() and memcpy() when
initializing or assigning. See also:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/2071
Make it also a bitfield to squeeze the size.
v5: Move wl_list_insert() into gl_shader_create() (Daniel)
Compare variant to explicit value. (Daniel)
Change functions to gl_renderer_get_program,
gl_renderer_use_program, and
gl_renderer_use_program_with_view_uniforms.
Use local variable instead of gr->current_shader. (Daniel)
Simplified gl_renderer_get_program.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Do not change in setup_censor_overrides() and then put back gs->shader
in draw_view() when the shader needs to be something else than what the
surface content calls for.
This makes the logic simpler, and makes following changes simpler as
well.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
To help debugging shader compilation errors, print the shader source the
way it was given to the GLSL compiler and with line numbers that match
the compiler error messages.
This is necessary because some snippets are added at runtime to the
beginning, the source is not only what is in the respective .glsl file.
I did look into using #line directives, but you cannot put source file
names to it, only "source string numbers" which must be an integer
expression. If we used #line, the reader would need to know that string
number 0 is the version, string 1 is the config and string number 2 is
fragment.glsl. I think that would have been too cumbersome.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
The main goal of this patch is to improve the readability of how and
what fragment shaders are generated.
Instead of having C code that assembles each shader variant from literal
string snippets, create one big fragment shader source that has
everything in it. This relies on a GLSL compiler to optimize statically
false conditions and unused uniforms away.
Having all the fragment shader code in one file, uncluttered by C string
literal syntax, improves readability significantly. A disadvantage is
that the code is more verbose, but it allows comments much better.
The actual shader code is kept unchanged except:
- FRAGMENT_CONVERT_YUV macro is now a proper function
- GLSL version is explicitly set to 1.00 ES
- RGBA and EXTERNAL use the same path, the difference is how the sampler
is declared
Further shader code consolidation is possible, but is left for another
time.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This patch adds the tooling for incorporating files as C data, so that
files can be built into the binaries. The tool is in Python to avoid
adding extra dependencies like xxd.
xxd.py is copied from Mesa as-is, from commit
b729cd58d76f97f3fc04a67569535ee5ef2f5278 (master branch on 2021-01-26),
a.k.a 21.0-branchpoint-635-gb729cd58d76.
Moving the GLSL vertex shader into a separate file is not that
interesting, the purpose of this commit is to provide a simple
demonstration of the tooling. The real benefits come in a following
patch where the fragment shaders are re-written and externalized.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This is purely moving code as is with no changes other than making the
three functions non-static.
Originally this was part of "gl-renderer: Requirement based shader
generation" by Harish Krupo, but that patch made also big changes to the
code at the same time. Patches are easier to review when code movement
is separate from behavioral changes, therefore I introduced this patch.
Cc: Harish Krupo <harishkrupo@gmail.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
The main point here is to print "GL ES %d.%d" instead of "GL ES 2"
because GL-renderer can and will use GL ES 3 features when present.
Saying it's GL ES 2 renderer is not quite true.
To print that, I need to extract major, minor from gr->gl_version and
those didn't have ready made macros yet. While writing the extraction,
make all these trivial functions, so that the compiler might warn us if
one passes e.g. negative literal numbers to gr_gl_version(). Explicit
types help keeping the bit operations safe too.
The only purpose for GR_GL_VERSION_INVALID was to fall back to version
2.0. Moving the fallback and logging into get_gl_version() makes that
macro unnecessary.
Finally, just in case GL version string contained garbage, reject
negative version numbers.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This test ensures that client submitted damage goes to the screen
correctly, regardless of output scale or transform.
The added quirk is explained in the test that uses it.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
