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backend-drm: allow offloading post-blend xform only if libdrm >= 2.4.130

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In commit "backend-drm: introduce color pipelines" we've started adding
support for KMS plane color pipelines, which require libdrm >= 2.4.130.
The final goal is using color pipelines to offload pre-blend color
transformations.

Currently we support offloading post-blend color transformations even
with older libdrm versions, but that is not very useful by itself.

This patch makes offloading post-blend color transformations dependent
on the libdrm version as well. This allows keeping the code to offload
pipelines in a single file (which is built only if libdrm >= 2.4.130),
avoiding lots of #ifdefs and making the code easier to follow.

Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
This commit is contained in:
Leandro Ribeiro 2026-04-02 20:41:28 -03:00
parent c186e17cb2
commit a62be1d582
1 changed files with 5 additions and 1 deletions
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6
frontend/main.c
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@ -4076,9 +4076,13 @@ load_drm_backend(struct weston_compositor *c, int *argc, char **argv,
weston_config_section_get_bool(section, "offload-blend-to-output",
&offload_blend_to_output, false);
if (!c->color_manager && offload_blend_to_output)
if (!c->color_manager)
offload_blend_to_output = false;
#if !CAN_OFFLOAD_COLOR_PIPELINE
offload_blend_to_output = false;
#endif
config.offload_blend_to_output = offload_blend_to_output;
weston_config_section_get_string(section,