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      1 //
      2 // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
      3 // Use of this source code is governed by a BSD-style license that can be
      4 // found in the LICENSE file.
      5 //
      6 
      7 // VertexDeclarationCache.h: Defines a helper class to construct and cache vertex declarations.
      8 
      9 #ifndef LIBGLESV2_RENDERER_VERTEXDECLARATIONCACHE_H_
     10 #define LIBGLESV2_RENDERER_VERTEXDECLARATIONCACHE_H_
     11 
     12 #include "libGLESv2/Error.h"
     13 #include "libGLESv2/renderer/d3d/VertexDataManager.h"
     14 
     15 namespace gl
     16 {
     17 class VertexDataManager;
     18 }
     19 
     20 namespace rx
     21 {
     22 
     23 class VertexDeclarationCache
     24 {
     25   public:
     26     VertexDeclarationCache();
     27     ~VertexDeclarationCache();
     28 
     29     gl::Error applyDeclaration(IDirect3DDevice9 *device, TranslatedAttribute attributes[], gl::ProgramBinary *programBinary, GLsizei instances, GLsizei *repeatDraw);
     30 
     31     void markStateDirty();
     32 
     33   private:
     34     UINT mMaxLru;
     35 
     36     enum { NUM_VERTEX_DECL_CACHE_ENTRIES = 32 };
     37 
     38     struct VBData
     39     {
     40         unsigned int serial;
     41         unsigned int stride;
     42         unsigned int offset;
     43     };
     44 
     45     VBData mAppliedVBs[gl::MAX_VERTEX_ATTRIBS];
     46     IDirect3DVertexDeclaration9 *mLastSetVDecl;
     47     bool mInstancingEnabled;
     48 
     49     struct VertexDeclCacheEntry
     50     {
     51         D3DVERTEXELEMENT9 cachedElements[gl::MAX_VERTEX_ATTRIBS + 1];
     52         UINT lruCount;
     53         IDirect3DVertexDeclaration9 *vertexDeclaration;
     54     } mVertexDeclCache[NUM_VERTEX_DECL_CACHE_ENTRIES];
     55 };
     56 
     57 }
     58 
     59 #endif // LIBGLESV2_RENDERER_VERTEXDECLARATIONCACHE_H_
     60