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egl: Use the Mesa surfaceless platform instead of GBM

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Mesa surfaceless platform appears to be a better fit for the use-case at hand:
1. Like GBM it is Mesa specific, so no change in supported setups is
   expected. If ever required, a fallback to the generic device platform
   could be added on top.
2. It leaves the complexity of selecting a renderer device to the
   driver, reducing code and dependencies.
3. It allows to use llvmpipe / software drivers without dri device,
   which can be useful on CI or debugging (with LIBGL_ALWAYS_SOFTWARE=1).

Signed-off-by: Robert Mader <robert.mader@collabora.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # sm8250/rb5, x1e/Dell Insprion14p
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Tested-by: Milan Zamazal <mzamazal@redhat.com> # TI AM69
Tested-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com> # ThinkPad X1 Yoga Gen 7 + ov2740
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Robert Mader
2026-01-21 10:08:52 +01:00
committed by Kieran Bingham
parent 4a5ebcf675
commit 0c2ed9ebf9
4 changed files with 11 additions and 17 deletions
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4
include/libcamera/internal/egl.h
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@@ -16,8 +16,6 @@
#include <libcamera/base/span.h>
#include <libcamera/base/utils.h>
#include "libcamera/internal/gbm.h"
#define EGL_EGLEXT_PROTOTYPES
#include <EGL/egl.h>
#include <EGL/eglext.h>
@@ -96,7 +94,7 @@ public:
eGL();
~eGL();
int initEGLContext(GBM *gbmContext);
int initEGLContext();
int createInputDMABufTexture2D(eGLImage &eglImage, int fd);
int createOutputDMABufTexture2D(eGLImage &eglImage, int fd);