1 files changed, 20 insertions, 4 deletions
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index 2a4affdc60..d4c6fbaf18 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -38,6 +38,7 @@
 #include <set>
 #include <vector>
 #include <list>
+#include <glm/gtc/matrix_transform.hpp>
 
 #define LL_MAX_VERTEX_ATTRIB_LOCATION 64
 
@@ -63,8 +64,11 @@ public:
         , mMode(0)
         , mCount(0)
         , mTexName(0)
+        , mProjection(glm::identity<glm::mat4>())
+        , mModelView(glm::identity<glm::mat4>())
+        , mTexture0(glm::identity<glm::mat4>())
     {}
-    LLVertexBufferData(LLVertexBuffer* buffer, U8 mode, U32 count, U32 tex_name, glh::matrix4f model_view, glh::matrix4f projection, glh::matrix4f texture0)
+    LLVertexBufferData(LLVertexBuffer* buffer, U8 mode, U32 count, U32 tex_name, const glm::mat4& model_view, const glm::mat4& projection, const glm::mat4& texture0)
         : mVB(buffer)
         , mMode(mode)
         , mCount(count)
@@ -78,9 +82,9 @@ public:
     U8 mMode;
     U32 mCount;
     U32 mTexName;
-    glh::matrix4f mProjection;
-    glh::matrix4f mModelView;
-    glh::matrix4f mTexture0;
+    glm::mat4 mProjection;
+    glm::mat4 mModelView;
+    glm::mat4 mTexture0;
 };
 typedef std::list<LLVertexBufferData> buffer_data_list_t;
 
@@ -120,6 +124,9 @@ public:
     // indexed by the following enum
     static U32 calcOffsets(const U32& typemask, U32* offsets, U32 num_vertices);
 
+    // flush any pending mapped buffers
+    static void flushBuffers();
+
     //WARNING -- when updating these enums you MUST
     // 1 - update LLVertexBuffer::sTypeSize
     // 2 - update LLVertexBuffer::vb_type_name
@@ -190,6 +197,8 @@ public:
     // map for data access (see also getFooStrider below)
     U8*     mapVertexBuffer(AttributeType type, U32 index, S32 count = -1);
     U8*     mapIndexBuffer(U32 index, S32 count = -1);
+
+    // synonym for flushBuffers
     void    unmapBuffer();
 
     // set for rendering
@@ -312,6 +321,13 @@ private:
 
     bool    allocateBuffer(S32 nverts, S32 nindices, bool create) { return allocateBuffer(nverts, nindices); }
 
+    // actually unmap buffer
+    void _unmapBuffer();
+
+    // add to set of mapped buffers
+    void _mapBuffer();
+    bool mMapped = false;
+
 public:
 
     static U64 getBytesAllocated();