From a67894a5a71ea3ca4c90f3249e0a445f9bc1b2be Mon Sep 17 00:00:00 2001
From: Chris Michael <cp.michael@samsung.com>
Date: Tue, 30 Apr 2013 07:09:16 +0100
Subject: [PATCH] Add Render_Engine structure Start on code to setup the output
 buffer. Add code to init evas_common functions Add override for engine setup.

Signed-off-by: Chris Michael <cp.michael@samsung.com>
---
 src/modules/evas/engines/drm/evas_engine.c | 121 +++++++++++++++++++++
 1 file changed, 121 insertions(+)

diff --git a/src/modules/evas/engines/drm/evas_engine.c b/src/modules/evas/engines/drm/evas_engine.c
index a3fa93e179..9bff302551 100644
--- a/src/modules/evas/engines/drm/evas_engine.c
+++ b/src/modules/evas/engines/drm/evas_engine.c
@@ -3,12 +3,65 @@
 #include "Evas_Engine_Drm.h"
 #include "evas_engine.h"
 
+/* local structures */
+typedef struct _Render_Engine Render_Engine;
+
+struct _Render_Engine
+{
+   Evas_Engine_Info_Drm *info;
+
+   Tilebuf *tb;
+   Tilebuf_Rect *rects;
+   Tilebuf_Rect *prev_rects[3];
+
+   Outbuf *ob;
+
+   Eina_Inlist *cur_rect;
+
+   Eina_Bool end : 1;
+};
+
+/* local function prototypes */
+static void *_output_setup(int w, int h, unsigned int rotation, unsigned int depth, Eina_Bool alpha, int swap);
+
 /* function tables - filled in later (func and parent func) */
 static Evas_Func func, pfunc;
 
 /* external variables */
 int _evas_engine_drm_log_dom;
 
+/* local functions */
+static void *
+_output_setup(int w, int h, unsigned int rotation, unsigned int depth, Eina_Bool alpha, int swap)
+{
+   Render_Engine *re;
+
+   /* try to allocate space for our render engine structure */
+   if (!(re = calloc(1, sizeof(Render_Engine))))
+     return NULL;
+
+   /* try to create a new tilebuffer */
+   if (!(re->tb = evas_common_tilebuf_new(w, h)))
+     {
+        free(re);
+        return NULL;
+     }
+
+   /* set tilesize */
+   evas_common_tilebuf_set_tile_size(re->tb, TILESIZE, TILESIZE);
+
+   if (swap)
+     {
+        /* free any existing outbuf */
+        if (re->ob) evas_outbuf_free(re->ob);
+
+        /* try to create new outbuf */
+     }
+
+   /* return the allocated render_engine structure */
+   return re;
+}
+
 /* engine api functions */
 static void *
 eng_info(Evas *evas EINA_UNUSED)
@@ -36,6 +89,73 @@ eng_info_free(Evas *evas EINA_UNUSED, void *einfo)
      free(info);
 }
 
+static int 
+eng_setup(Evas *evas, void *einfo)
+{
+   Evas_Engine_Info_Drm *info;
+   Evas_Public_Data *epd;
+   Render_Engine *re;
+
+   /* try to cast to our engine info structure */
+   if (!(info = (Evas_Engine_Info_Drm *)einfo)) return 0;
+
+   /* try to get the evas public data */
+   if (!(epd = eo_data_get(evas, EVAS_CLASS))) return 0;
+
+   /* check for valid engine output */
+   if (!(re = epd->engine.data.output))
+     {
+        static int swap = -1;
+
+        /* NB: If we have no valid output then assume we have not been 
+         * initialized yet and call any needed common init routines */
+        evas_common_cpu_init();
+        evas_common_blend_init();
+        evas_common_image_init();
+        evas_common_convert_init();
+        evas_common_scale_init();
+        evas_common_rectangle_init();
+        evas_common_polygon_init();
+        evas_common_line_init();
+        evas_common_font_init();
+        evas_common_draw_init();
+        evas_common_tilebuf_init();
+
+        /* check if swapping is disabled */
+        if (swap == -1)
+          {
+             if (getenv("EVAS_DRM_NO_SWAP")) swap = 0;
+             else swap = 1;
+          }
+
+        /* try to create a new render_engine */
+        if (!(re = _output_setup(epd->output.w, epd->output.h, 
+                                 info->info.rotation, info->info.depth, 
+                                 info->info.destination_alpha, swap)))
+          return 0;
+
+        re->info = info;
+     }
+   else
+     {
+
+     }
+
+   /* reassign engine output */
+   epd->engine.data.output = re;
+   if (!epd->engine.data.output) return 0;
+
+   /* check for valid engine context */
+   if (!epd->engine.data.context)
+     {
+        /* create a context if needed */
+        epd->engine.data.context = 
+          epd->engine.func->context_new(epd->engine.data.output);
+     }
+
+   return 1;
+}
+
 /* module api functions */
 static int
 module_open(Evas_Module *em)
@@ -63,6 +183,7 @@ module_open(Evas_Module *em)
    /* override the methods we provide */
    EVAS_API_OVERRIDE(info, &func, eng_);
    EVAS_API_OVERRIDE(info_free, &func, eng_);
+   EVAS_API_OVERRIDE(setup, &func, eng_);
 
    /* advertise our engine functions */
    em->functions = (void *)(&func);