dll/directx/wine/d3dx9_36/core.c

   1 /*
   2  *
   3  * Copyright 2002 Raphael Junqueira
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "d3dx9_36_private.h"
  21
  22 struct ID3DXBufferImpl
  23 {
  24     ID3DXBuffer ID3DXBuffer_iface;
  25     LONG ref;
  26
  27     void *buffer;
  28     DWORD size;
  29 };
  30
  31 static inline struct ID3DXBufferImpl *impl_from_ID3DXBuffer(ID3DXBuffer *iface)
  32 {
  33     return CONTAINING_RECORD(iface, struct ID3DXBufferImpl, ID3DXBuffer_iface);
  34 }
  35
  36 static HRESULT WINAPI ID3DXBufferImpl_QueryInterface(ID3DXBuffer *iface, REFIID riid, void **ppobj)
  37 {
  38     TRACE("iface %p, riid %s, object %p\n", iface, debugstr_guid(riid), ppobj);
  39
  40     if (IsEqualGUID(riid, &IID_IUnknown)
  41       || IsEqualGUID(riid, &IID_ID3DXBuffer))
  42     {
  43         IUnknown_AddRef(iface);
  44         *ppobj = iface;
  45         return D3D_OK;
  46     }
  47
  48     WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));
  49
  50     return E_NOINTERFACE;
  51 }
  52
  53 static ULONG WINAPI ID3DXBufferImpl_AddRef(ID3DXBuffer *iface)
  54 {
  55     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  56     ULONG ref = InterlockedIncrement(&This->ref);
  57
  58     TRACE("%p increasing refcount to %u\n", This, ref);
  59
  60     return ref;
  61 }
  62
  63 static ULONG WINAPI ID3DXBufferImpl_Release(ID3DXBuffer *iface)
  64 {
  65     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  66     ULONG ref = InterlockedDecrement(&This->ref);
  67
  68     TRACE("%p decreasing refcount to %u\n", This, ref);
  69
  70     if (ref == 0)
  71     {
  72         HeapFree(GetProcessHeap(), 0, This->buffer);
  73         HeapFree(GetProcessHeap(), 0, This);
  74     }
  75
  76     return ref;
  77 }
  78
  79 static void * WINAPI ID3DXBufferImpl_GetBufferPointer(ID3DXBuffer *iface)
  80 {
  81     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  82
  83     TRACE("iface %p\n", iface);
  84
  85     return This->buffer;
  86 }
  87
  88 static DWORD WINAPI ID3DXBufferImpl_GetBufferSize(ID3DXBuffer *iface)
  89 {
  90     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  91
  92     TRACE("iface %p\n", iface);
  93
  94     return This->size;
  95 }
  96
  97 static const struct ID3DXBufferVtbl ID3DXBufferImpl_Vtbl =
  98 {
  99     /* IUnknown methods */
 100     ID3DXBufferImpl_QueryInterface,
 101     ID3DXBufferImpl_AddRef,
 102     ID3DXBufferImpl_Release,
 103     /* ID3DXBuffer methods */
 104     ID3DXBufferImpl_GetBufferPointer,
 105     ID3DXBufferImpl_GetBufferSize
 106 };
 107
 108 static HRESULT d3dx9_buffer_init(struct ID3DXBufferImpl *buffer, DWORD size)
 109 {
 110     buffer->ID3DXBuffer_iface.lpVtbl = &ID3DXBufferImpl_Vtbl;
 111     buffer->ref = 1;
 112     buffer->size = size;
 113
 114     buffer->buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
 115     if (!buffer->buffer)
 116     {
 117         ERR("Failed to allocate buffer memory\n");
 118         return E_OUTOFMEMORY;
 119     }
 120
 121     return D3D_OK;
 122 }
 123
 124 HRESULT WINAPI D3DXCreateBuffer(DWORD size, ID3DXBuffer **buffer)
 125 {
 126     struct ID3DXBufferImpl *object;
 127     HRESULT hr;
 128
 129     if (!buffer)
 130     {
 131         WARN("Invalid buffer specified.\n");
 132         return D3DERR_INVALIDCALL;
 133     }
 134
 135     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
 136     if (!object)
 137         return E_OUTOFMEMORY;
 138
 139     hr = d3dx9_buffer_init(object, size);
 140     if (FAILED(hr))
 141     {
 142         WARN("Failed to initialize buffer, hr %#x.\n", hr);
 143         HeapFree(GetProcessHeap(), 0, object);
 144         return hr;
 145     }
 146
 147     *buffer = &object->ID3DXBuffer_iface;
 148
 149     TRACE("Created ID3DBuffer %p\n", *buffer);
 150
 151     return D3D_OK;
 152 }