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gl-renderer: query DRM device given an EGLDisplay

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Add function to query the DRM device given an EGLDisplay. It is the
device being used by the compositor to perform composition.

This will be useful in the next commits of this series, where we add
support for dma-buf feedback.

Signed-off-by: Scott Anderson <scott.anderson@collabora.com>
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Scott Anderson
2021-01-18 18:10:58 -03:00
committed by Leandro Ribeiro
parent 6e98c0dfd1
commit f9787ba482
3 changed files with 89 additions and 0 deletions
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libweston/renderer-gl/egl-glue.c
+50
View File
@@ -455,6 +455,45 @@ gl_renderer_get_egl_config(struct gl_renderer *gr,
return egl_config;
}
static void
gl_renderer_set_egl_device(struct gl_renderer *gr)
{
EGLAttrib attrib;
const char *extensions;
assert(gr->has_device_query);
if (!gr->query_display_attrib(gr->egl_display, EGL_DEVICE_EXT, &attrib)) {
weston_log("failed to get EGL device\n");
gl_renderer_print_egl_error_state();
return;
}
gr->egl_device = (EGLDeviceEXT) attrib;
extensions = gr->query_device_string(gr->egl_device, EGL_EXTENSIONS);
if (!extensions) {
weston_log("failed to get EGL extensions\n");
return;
}
gl_renderer_log_extensions("EGL device extensions", extensions);
/* Try to query the render node using EGL_DRM_RENDER_NODE_FILE_EXT */
if (weston_check_egl_extension(extensions, "EGL_EXT_device_drm_render_node"))
gr->drm_device = gr->query_device_string(gr->egl_device,
EGL_DRM_RENDER_NODE_FILE_EXT);
/* The extension is not supported by the Mesa version of the system or
* the query failed. Fallback to EGL_DRM_DEVICE_FILE_EXT */
if (!gr->drm_device && weston_check_egl_extension(extensions, "EGL_EXT_device_drm"))
gr->drm_device = gr->query_device_string(gr->egl_device,
EGL_DRM_DEVICE_FILE_EXT);
if (!gr->drm_device)
weston_log("failed to query DRM device from EGL\n");
}
int
gl_renderer_setup_egl_display(struct gl_renderer *gr,
void *native_display)
@@ -484,6 +523,9 @@ gl_renderer_setup_egl_display(struct gl_renderer *gr,
goto fail;
}
if (gr->has_device_query)
gl_renderer_set_egl_device(gr);
return 0;
fail:
@@ -534,6 +576,14 @@ gl_renderer_setup_egl_client_extensions(struct gl_renderer *gr)
gl_renderer_log_extensions("EGL client extensions",
extensions);
if (weston_check_egl_extension(extensions, "EGL_EXT_device_query")) {
gr->query_display_attrib =
(void *) eglGetProcAddress("eglQueryDisplayAttribEXT");
gr->query_device_string =
(void *) eglGetProcAddress("eglQueryDeviceStringEXT");
gr->has_device_query = true;
}
if (weston_check_egl_extension(extensions, "EGL_EXT_platform_base")) {
gr->get_platform_display =
(void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
libweston/renderer-gl/gl-renderer-internal.h
+7
View File
@@ -119,6 +119,9 @@ struct gl_renderer {
struct wl_array vertices;
struct wl_array vtxcnt;
EGLDeviceEXT egl_device;
const char *drm_device;
struct weston_drm_format_array supported_formats;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
@@ -163,6 +166,10 @@ struct gl_renderer {
PFNEGLQUERYDMABUFFORMATSEXTPROC query_dmabuf_formats;
PFNEGLQUERYDMABUFMODIFIERSEXTPROC query_dmabuf_modifiers;
bool has_device_query;
PFNEGLQUERYDISPLAYATTRIBEXTPROC query_display_attrib;
PFNEGLQUERYDEVICESTRINGEXTPROC query_device_string;
bool has_native_fence_sync;
PFNEGLCREATESYNCKHRPROC create_sync;
PFNEGLDESTROYSYNCKHRPROC destroy_sync;