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render-device: Add API to allocate dumb buffers

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All render devices that have a device file backing them might be able to
allocate dumb buffers, so add a helper for doing that. Will indirectly
result in an error up front on a surfaceless render device due to lack
of a device file.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1854>
This commit is contained in:
Jonas Ådahl 2021-05-05 15:40:23 +02:00
parent 986588ade2
commit 8662f33b9e
2 changed files with 35 additions and 0 deletions
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29
src/backends/native/meta-render-device.c
View file

@ -25,6 +25,7 @@
#include "backends/meta-backend-private.h"
#include "backends/meta-egl.h"
#include "backends/native/meta-backend-native-types.h"
#include "backends/native/meta-drm-buffer-dumb.h"
enum
{
@ -381,3 +382,31 @@ meta_render_device_import_dma_buf (MetaRenderDevice *render_device,
return NULL;
}
MetaDrmBuffer *
meta_render_device_allocate_dumb_buf (MetaRenderDevice *render_device,
int width,
int height,
uint32_t format,
GError **error)
{
MetaRenderDevicePrivate *priv =
meta_render_device_get_instance_private (render_device);
MetaDrmBufferDumb *buffer_dumb;
if (!priv->device_file)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
"No device file to allocate from");
return NULL;
}
buffer_dumb = meta_drm_buffer_dumb_new (priv->device_file,
width, height,
format,
error);
if (!buffer_dumb)
return NULL;
return META_DRM_BUFFER (buffer_dumb);
}

6
src/backends/native/meta-render-device.h
View file

@ -52,4 +52,10 @@ MetaDrmBuffer * meta_render_device_import_dma_buf (MetaRenderDevice *render_dev
MetaDrmBuffer *buffer,
GError **error);
MetaDrmBuffer * meta_render_device_allocate_dumb_buf (MetaRenderDevice *render_device,
int width,
int height,
uint32_t format,
GError **error);
#endif /* META_RENDER_DEVICE_H */