mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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543c14a8b1
Add a new surface backend that allocates pixel buffers through GBM (Generic Buffer Manager), allowing Cairo-rendered content to be imported directly by GPU compositors via DMA-BUF file descriptors without an intermediate memory copy. The backend renders on the CPU via pixman (like the image backend) but allocates its buffer through GBM with a linear modifier, making it suitable for zero-copy handoff to GPU-based compositors such as Mutter/Clutter (GNOME) or GSK (GTK 4). New public API (cairo-gbm.h): - cairo_gbm_surface_create() — allocate a new GBM-backed surface - cairo_gbm_surface_create_for_bo() — wrap an existing gbm_bo - cairo_gbm_surface_get_bo() — retrieve the underlying gbm_bo - cairo_gbm_surface_get_dma_buf_fd() — export a DMA-BUF fd for the buffer Build integration: - New 'gbm' meson option (auto-detected via libgbm + libdrm) - CAIRO_HAS_GBM_SURFACE feature flag Test coverage: - Dedicated API + error-path tests (test/gbm-surface.c) - Surface-as-source pattern test (test/gbm-surface-source.c) - GBM boilerplate target for the full test suite - Entries in api-special-cases.c and error-setters.c
31 lines
1.2 KiB
Text
31 lines
1.2 KiB
Text
# Cairo font backends
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option('dwrite', type : 'feature', value : 'auto')
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option('fontconfig', type : 'feature', value : 'auto')
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option('freetype', type : 'feature', value : 'auto')
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# Cairo surface backends
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option('gbm', type : 'feature', value : 'auto')
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option('png', type : 'feature', value : 'auto') # png and svg surfaces
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option('quartz', type : 'feature', value : 'auto')
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option('tee', type : 'feature', value : 'auto')
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option('xcb', type : 'feature', value : 'auto')
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option('xlib', type : 'feature', value : 'auto')
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option('xlib-xcb', type : 'feature', value : 'disabled')
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option('zlib', type : 'feature', value : 'auto') # script, ps, pdf, xml surfaces
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# Tests
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option('tests', type : 'feature', value : 'auto')
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# Util deps
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option('lzo', type : 'feature', value : 'auto')
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option('gtk2-utils', type : 'feature', value : 'disabled')
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# Misc deps
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option('glib', type : 'feature', value : 'auto')
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option('spectre', type : 'feature', value : 'auto')
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option('symbol-lookup', type: 'feature', value : 'auto',
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description: 'Symbol lookup in debug utils via binutils/bfd')
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# Documentation
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option('gtk_doc', type : 'boolean', value : false,
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description: 'Build the Cairo API reference (depends on gtk-doc)')
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