From a6f1657cac74b3894dfefbab90743f4e776dea26 Mon Sep 17 00:00:00 2001
From: hyzboy <hyzboy@gmail.com>
Date: Fri, 7 Aug 2020 22:34:07 +0800
Subject: [PATCH] add TextRenderable

---
 inc/hgl/graph/font/TextRenderable.h    | 14 ++++---
 inc/hgl/graph/vulkan/VKRenderable.h    |  2 +
 src/SceneGraph/font/TextRenderable.cpp | 58 ++++++++++++++++++++++++++
 3 files changed, 68 insertions(+), 6 deletions(-)
 create mode 100644 src/SceneGraph/font/TextRenderable.cpp

diff --git a/inc/hgl/graph/font/TextRenderable.h b/inc/hgl/graph/font/TextRenderable.h
index 63a401f2..86738609 100644
--- a/inc/hgl/graph/font/TextRenderable.h
+++ b/inc/hgl/graph/font/TextRenderable.h
@@ -11,21 +11,23 @@ namespace hgl
          */
         class TextRenderable:public vulkan::Renderable
         {
-            vulkan::Renderable *        render_obj;
+            vulkan::Device *device;
+
+            vulkan::Renderable *render_obj;
 
             uint32 max_count;                                                   ///<缓冲区最大容量
             uint32 cur_count;                                                   ///<当前容量
 
-            vulkan::VertexAttribBuffer *vertex_buffer;
-            vulkan::VertexAttribBuffer *tex_coord_buffer;
+            vulkan::VAB *vab_vertex;
+            vulkan::VAB *vab_tex_coord;
 
         public:
 
-            TextRenderable();
+            TextRenderable(vulkan::Device *,int mc=1024);
             virtual ~TextRenderable();
+
+            void SetMaxCount(int);
         };//class TextRenderable:public vulkan::Renderable
-
-
     }//namespace graph
 }//namespace hgl
 #endif//HGL_GRAPH_TEXT_RENDERABLE_INCLUDE
diff --git a/inc/hgl/graph/vulkan/VKRenderable.h b/inc/hgl/graph/vulkan/VKRenderable.h
index 753b0fe1..e81457ec 100644
--- a/inc/hgl/graph/vulkan/VKRenderable.h
+++ b/inc/hgl/graph/vulkan/VKRenderable.h
@@ -61,6 +61,8 @@ public:
 
 public:
 
+    void                    SetDrawCount    (const uint32_t dc){draw_count=dc;} ///<设置当前对象绘制需要多少个顶点
+
     const uint32_t          GetDrawCount    ()const                             ///<取得当前对象绘制需要多少个顶点
     {
         if(indices_buffer)
diff --git a/src/SceneGraph/font/TextRenderable.cpp b/src/SceneGraph/font/TextRenderable.cpp
new file mode 100644
index 00000000..ee0350fc
--- /dev/null
+++ b/src/SceneGraph/font/TextRenderable.cpp
@@ -0,0 +1,58 @@
+#include<hgl/graph/font/TextRenderable.h>
+
+namespace hgl
+{
+    namespace graph
+    {
+        namespace
+        {
+            vulkan::Pipeline *text_pipeline=nullptr;
+        }//namespace
+
+        TextRenderable::TextRenderable(Device *dev,int mc)
+        {
+            device=dev;
+
+            render_obj=nullptr;
+            vab_vertex=nullptr;
+            vab_tex_coord=nullptr;
+
+            max_count=mc;
+            cur_count=mc;
+
+            SetMaxCount(mc);
+        }
+
+        TextRenderable::~TextRenderable()
+        {
+            SAFE_CLEAR(vab_tex_coord);
+            SAFE_CLEAR(vab_vertex);
+            SAFE_CLEAR(render_obj);
+        }
+
+        void TextRenderable::SetMaxCount(int mc)
+        {
+            if(mc<max_count)return;
+
+            max_count=mc;
+
+            if(vab_vertex)
+            {
+                delete vab_vertex;
+
+                vab_vertex      =device->CreateVAB(VAF_VEC4,max_count);
+
+                render_obj->Set(VAN::Vertex,vab_vertex);
+            }
+
+            if(vab_tex_coord)
+            {
+                delete vab_tex_coord;
+
+                vab_tex_coord   =device->CreateVAB(VAF_VEC4,max_count);
+
+                render_obj->Set(VAN::TexCoord,vab_tex_coord);
+            }
+        }
+    }//namespace graph
+}//namespace hgl