Evas filters: Add basic support for clip in blend

Right now, clip is used only when blending RGBA surfaces.

src/lib/evas/canvas/evas_object_text.c

@@ -2163,7 +2163,7 @@ evas_object_text_render(Evas_Object *eo_obj EINA_UNUSED,
         }
 
         // FIXME: This final blend is not necessary. Needs to be removed.
-        evas_filter_command_blend_add(filter, filter_ctx, outbuf, targetbuf,
+        evas_filter_command_blend_add(filter, context, outbuf, targetbuf,
                                       X + x, Y + y);
 
         ENFN->context_free(ENDT, filter_ctx);

src/lib/evas/filters/evas_filter.c

@@ -745,6 +745,8 @@ evas_filter_command_blend_add(Evas_Filter_Context *ctx, void *drawctx,
    cmd->draw.ox = ox;
    cmd->draw.oy = oy;
    cmd->draw.render_op = ENFN->context_render_op_get(ENDT, drawctx);
+   ENFN->context_clip_get(ENDT, drawctx, &cmd->draw.clipx, &cmd->draw.clipy,
+                          &cmd->draw.clipw, &cmd->draw.cliph);
 
    return cmd->id;
 }

src/lib/evas/filters/evas_filter_blend.c

@@ -54,6 +54,7 @@ _filter_blend_cpu_alpha(Evas_Filter_Command *cmd)
      }
 
    _clip_to_target(&sx, &sy, sw, sh, ox, oy, dw, dh, &dx, &dy, &rows, &cols);
+   // FIXME/TODO: Clip to context clip
 
    if (cols <= 0 || rows <= 0)
      return EINA_TRUE;
@@ -91,6 +92,8 @@ _filter_blend_cpu_rgba(Evas_Filter_Command *cmd)
    cmd->ENFN->context_color_set(cmd->ENDT, drawctx, cmd->draw.R, cmd->draw.G,
                                 cmd->draw.B, cmd->draw.A);
    cmd->ENFN->context_render_op_set(cmd->ENDT, drawctx, cmd->draw.render_op);
+   cmd->ENFN->context_clip_set(cmd->ENDT, drawctx, cmd->draw.clipx,
+                               cmd->draw.clipy, cmd->draw.clipw, cmd->draw.cliph);
 
    cmd->ENFN->image_draw(cmd->ENDT, drawctx, out, in,
                          0, 0, w, h, // src
@@ -141,6 +144,7 @@ _filter_blend_cpu_mask_rgba(Evas_Filter_Command *cmd)
      }
 
    _clip_to_target(&sx, &sy, sw, sh, ox, oy, dw, dh, &dx, &dy, &rows, &cols);
+   // FIXME/TODO: Clip to context clip
 
    if (cols <= 0 || rows <= 0)
      return EINA_TRUE;
@@ -181,6 +185,7 @@ _filter_blend_cpu_rgba2alpha(Evas_Filter_Command *cmd)
    dstdata = out->mask.data;
 
    _clip_to_target(&sx, &sy, sw, sh, ox, oy, dw, dh, &dx, &dy, &rows, &cols);
+   // FIXME/TODO: Clip to context clip
 
    if (cols <= 0 || rows <= 0)
      return EINA_TRUE;

src/lib/evas/filters/evas_filter_private.h

@@ -100,7 +100,7 @@ struct _Evas_Filter_Command
       int render_op;
       int R, G, B, A;
       int ox, oy;
-      // TODO: Add clip
+      int clipx, clipy, clipw, cliph;
    } draw;
 };