1 /*
   2  * Copyright (c) 2019, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #ifndef VertexDataManager_h_Included
  27 #define VertexDataManager_h_Included
  28 
  29 #import <Metal/Metal.h>
  30 #import "shaders/MetalShaderTypes.h"
  31 
  32 // ---------------------------------------------------------------------
  33 //TODO : This implementation should be redesigned as a singleton class
  34 //TODO : Drawing optimization can be done - if current primitive-type to be 
  35 //       drawn is equal to previous primitive-type in the list/array 
  36 //       (Similar to previous-op in OGL)
  37 // ---------------------------------------------------------------------
  38 
  39 typedef struct 
  40 {
  41     MTLPrimitiveType type;
  42     unsigned int offset_in_index_buffer;
  43     unsigned int no_of_indices;
  44     unsigned int primitiveInstances;
  45 } MetalPrimitiveData;
  46 
  47 void VertexDataManager_init(id<MTLDevice> device);
  48 
  49 void VertexDataManager_addLineVertexData(MetalVertex v1, MetalVertex v2);
  50 void VertexDataManager_addQuadVertexData(MetalVertex v1, MetalVertex v2, MetalVertex v3, MetalVertex v4);
  51 
  52 id<MTLBuffer> VertexDataManager_getVertexBuffer();
  53 id<MTLBuffer> VertexDataManager_getIndexBuffer();
  54 MetalPrimitiveData** VertexDataManager_getAllPrimitives();
  55 unsigned int VertexDataManager_getNoOfPrimitives();
  56 
  57 void VertexDataManager_freeAllPrimitives();
  58 void VertexDataManager_reset(id<MTLDevice> device);
  59 
  60 // should be private
  61 void addVertex(MetalVertex vert);
  62 void addIndex(unsigned short vertexNum);
  63 
  64 #endif //VertexDataManager_h_Included