[drape] simple area shape for debug

drape_frontend/area_shape.cpp

@@ -0,0 +1,55 @@
+#include "area_shape.hpp"
+
+#include "../drape/shader_def.hpp"
+#include "../drape/attribute_provider.hpp"
+
+namespace df
+{
+  AreaShape::AreaShape(const Color & c)
+    : m_color(c)
+  {
+  }
+
+  void AreaShape::AddTriangle(const m2::PointF & v1,
+                              const m2::PointF & v2,
+                              const m2::PointF & v3)
+  {
+    m_vertexes.push_back(v1);
+    m_vertexes.push_back(v2);
+    m_vertexes.push_back(v3);
+  }
+
+  void AreaShape::Draw(RefPointer<Batcher> batcher) const
+  {
+    GLState state(gpu::SOLID_AREA_PROGRAM, 0, TextureBinding("", false, 0, MakeStackRefPointer<Texture>(NULL)));
+    float r, g, b, a;
+    Convert(m_color, r, g, b, a);
+    state.GetUniformValues().SetFloatValue("color", r, g, b, a);
+
+    AttributeProvider provider(2, m_vertexes.size());
+    {
+      BindingInfo info(1);
+      BindingDecl & decl = info.GetBindingDecl(0);
+      decl.m_attributeName = "position";
+      decl.m_componentCount = 2;
+      decl.m_componentType = GLConst::GLFloatType;
+      decl.m_offset = 0;
+      decl.m_stride = 0;
+      provider.InitStream(0, info, MakeStackRefPointer((void *)&m_vertexes[0]));
+    }
+
+    vector<float> depthMemory(m_vertexes.size(), 0.0);
+    {
+      BindingInfo info(1);
+      BindingDecl & decl = info.GetBindingDecl(0);
+      decl.m_attributeName = "depth";
+      decl.m_componentCount = 1;
+      decl.m_componentType = GLConst::GLFloatType;
+      decl.m_offset = 0;
+      decl.m_stride = 0;
+      provider.InitStream(0, info, MakeStackRefPointer((void *)&depthMemory[0]));
+    }
+
+    batcher->InsertTriangleList(state, MakeStackRefPointer(&provider));
+  }
+}

drape_frontend/area_shape.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include "map_shape.hpp"
+#include "../drape/batcher.hpp"
+#include "../drape/pointers.hpp"
+#include "../drape/color.hpp"
+
+#include "../geometry/point2d.hpp"
+#include "../std/vector.hpp"
+
+namespace df
+{
+  class AreaShape : public MapShape
+  {
+  public:
+    AreaShape(Color const & c);
+
+    void AddTriangle(const m2::PointF & v1,
+                     const m2::PointF & v2,
+                     const m2::PointF & v3);
+
+    virtual void Draw(RefPointer<Batcher> batcher) const;
+
+  private:
+    Color m_color;
+    vector<m2::PointF> m_vertexes;
+  };
+}

drape_frontend/drape_frontend.pro

@@ -17,7 +17,8 @@ SOURCES += \
     impl/backend_renderer_impl.cpp \
     read_mwm_task.cpp \
     batchers_pool.cpp \
-    frontend_renderer.cpp
+    frontend_renderer.cpp \
+    area_shape.cpp
 
 HEADERS += \
     backend_renderer.hpp \
@@ -34,4 +35,5 @@ HEADERS += \
     message_subclasses.hpp \
     map_shape.hpp \
     batchers_pool.hpp \
-    frontend_renderer.hpp
+    frontend_renderer.hpp \
+    area_shape.hpp