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commit 382c92559e94f0d549f61fc5d48f0903789e38d1
Author: Christopher Michael <devilho...@comcast.net>
AuthorDate: Tue Aug 19 09:12:22 2025 -0500
evas_engine_drm: Add start of basic evas_engine_drm code
---
src/modules/evas/engines/drm/evas_engine.c | 154 +++++++++++++++++++++++++++++
1 file changed, 154 insertions(+)
diff --git a/src/modules/evas/engines/drm/evas_engine.c b/src/modules/evas/engines/drm/evas_engine.c
new file mode 100644
index 0000000000..08bcd66c7a
--- /dev/null
+++ b/src/modules/evas/engines/drm/evas_engine.c
@@ -0,0 +1,154 @@
+#include "evas_engine.h"
+#include "../software_generic/evas_native_common.h"
+
+typedef struct _Render_Engine
+{
+ Render_Output_Software_Generic generic;
+
+ Ecore_Drm2_Device *dev;
+} Render_Engine;
+
+static Evas_Func func, pfunc;
+
+int _evas_engine_drm_log_dom;
+
+static void
+eng_output_info_setup(void *info)
+{
+ Evas_Engine_Info_Drm *einfo = info;
+
+ einfo->render_mode = EVAS_RENDER_MODE_BLOCKING;
+}
+
+static void *
+eng_output_setup(void *engine, void *einfo, unsigned int w, unsigned int h)
+{
+ Evas_Engine_Info_Drm *info = einfo;
+ Render_Engine *re;
+ Outbuf *ob;
+
+ re = calloc(1, sizeof(Render_Engine));
+ if (!re) return NULL;
+
+ ob = _outbuf_setup(info, w, h);
+ if (!ob) goto err;
+
+ re->dev = info->info.dev;
+
+ if (!evas_render_engine_software_generic_init(engine, &re->generic, ob,
+ NULL, //_outbuf_state_get,
+ NULL, //_outbuf_rotation_get,
+ NULL, //_outbuf_reconfigure,
+ NULL,
+ NULL, //_outbuf_damage_region_set,
+ NULL, //_outbuf_update_region_new,
+ NULL, //_outbuf_update_region_push,
+ NULL,
+ NULL,
+ NULL, //_outbuf_flush,
+ NULL,
+ _outbuf_free,
+ ob->w, ob->h))
+ goto init_err;
+
+ evas_render_engine_software_generic_merge_mode_set(&re->generic);
+
+ re->generic.ob->info = einfo;
+
+ return re;
+
+init_err:
+ evas_render_engine_software_generic_clean(engine, &re->generic);
+err:
+ free(re);
+ return NULL;
+}
+
+static int
+eng_output_update(void *engine EINA_UNUSED, void *data, void *einfo, unsigned int w, unsigned int h)
+{
+ Render_Engine *re = data;
+// Evas_Engine_Info_Drm *info;
+
+// info = (Evas_Engine_Info_Drm *)einfo;
+// _outbuf_reconfigure(re->generic.ob, w, h,
+// info->info.rotation, info->info.depth);
+
+ evas_render_engine_software_generic_update(&re->generic,
+ re->generic.ob, w, h);
+
+ return 1;
+}
+
+static void
+eng_output_free(void *engine, void *data)
+{
+ Render_Engine *re = data;
+
+ evas_render_engine_software_generic_clean(engine, &re->generic);
+ free(re);
+}
+
+static int
+module_open(Evas_Module *em)
+{
+ /* check for valid evas module */
+ if (!em) return 0;
+
+ /* try to inherit functions from software_generic engine */
+ if (!_evas_module_engine_inherit(&pfunc, "software_generic",
+ sizeof(Evas_Engine_Info_Drm)))
+ return 0;
+
+ /* try to create eina logging domain */
+ _evas_engine_drm_log_dom =
+ eina_log_domain_register("evas-drm", EVAS_DEFAULT_LOG_COLOR);
+
+ /* if we could not create a logging domain, error out */
+ if (_evas_engine_drm_log_dom < 0)
+ {
+ EINA_LOG_ERR("Can not create a module log domain.");
+ return 0;
+ }
+
+ ecore_init();
+
+ /* store parent functions */
+ func = pfunc;
+
+ /* override the methods we provide */
+#define ORD(f) EVAS_API_OVERRIDE(f, &func, eng_)
+ ORD(output_info_setup);
+ ORD(output_setup);
+ ORD(output_update);
+ ORD(output_free);
+
+ /* advertise our engine functions */
+ em->functions = (void *)(&func);
+
+ return 1;
+}
+
+static void
+module_close(Evas_Module *em EINA_UNUSED)
+{
+ /* unregister the eina log domain for this engine */
+ if (_evas_engine_drm_log_dom >= 0)
+ {
+ eina_log_domain_unregister(_evas_engine_drm_log_dom);
+ _evas_engine_drm_log_dom = -1;
+ }
+
+ ecore_shutdown();
+}
+
+static Evas_Module_Api evas_modapi =
+{
+ EVAS_MODULE_API_VERSION, "drm", "none", { module_open, module_close }
+};
+
+EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_ENGINE, engine, drm);
+
+#ifndef EVAS_STATIC_BUILD_DRM
+EVAS_EINA_MODULE_DEFINE(engine, drm);
+#endif
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