dlls/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 "config.h"
  21 #include "wine/port.h"
  22
  23 #include "d3dx9_private.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);
  26
  27 struct ID3DXBufferImpl
  28 {
  29     ID3DXBuffer ID3DXBuffer_iface;
  30     LONG ref;
  31
  32     void *buffer;
  33     DWORD size;
  34 };
  35
  36 static inline struct ID3DXBufferImpl *impl_from_ID3DXBuffer(ID3DXBuffer *iface)
  37 {
  38     return CONTAINING_RECORD(iface, struct ID3DXBufferImpl, ID3DXBuffer_iface);
  39 }
  40
  41 static HRESULT WINAPI ID3DXBufferImpl_QueryInterface(ID3DXBuffer *iface, REFIID riid, void **ppobj)
  42 {
  43     TRACE("iface %p, riid %s, object %p\n", iface, debugstr_guid(riid), ppobj);
  44
  45     if (IsEqualGUID(riid, &IID_IUnknown)
  46       || IsEqualGUID(riid, &IID_ID3DXBuffer))
  47     {
  48         IUnknown_AddRef(iface);
  49         *ppobj = iface;
  50         return D3D_OK;
  51     }
  52
  53     WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));
  54
  55     return E_NOINTERFACE;
  56 }
  57
  58 static ULONG WINAPI ID3DXBufferImpl_AddRef(ID3DXBuffer *iface)
  59 {
  60     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  61     ULONG ref = InterlockedIncrement(&This->ref);
  62
  63     TRACE("%p increasing refcount to %u\n", This, ref);
  64
  65     return ref;
  66 }
  67
  68 static ULONG WINAPI ID3DXBufferImpl_Release(ID3DXBuffer *iface)
  69 {
  70     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  71     ULONG ref = InterlockedDecrement(&This->ref);
  72
  73     TRACE("%p decreasing refcount to %u\n", This, ref);
  74
  75     if (ref == 0)
  76     {
  77         HeapFree(GetProcessHeap(), 0, This->buffer);
  78         HeapFree(GetProcessHeap(), 0, This);
  79     }
  80
  81     return ref;
  82 }
  83
  84 static void * WINAPI ID3DXBufferImpl_GetBufferPointer(ID3DXBuffer *iface)
  85 {
  86     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  87
  88     TRACE("iface %p\n", iface);
  89
  90     return This->buffer;
  91 }
  92
  93 static DWORD WINAPI ID3DXBufferImpl_GetBufferSize(ID3DXBuffer *iface)
  94 {
  95     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  96
  97     TRACE("iface %p\n", iface);
  98
  99     return This->size;
 100 }
 101
 102 static const struct ID3DXBufferVtbl ID3DXBufferImpl_Vtbl =
 103 {
 104     /* IUnknown methods */
 105     ID3DXBufferImpl_QueryInterface,
 106     ID3DXBufferImpl_AddRef,
 107     ID3DXBufferImpl_Release,
 108     /* ID3DXBuffer methods */
 109     ID3DXBufferImpl_GetBufferPointer,
 110     ID3DXBufferImpl_GetBufferSize
 111 };
 112
 113 static HRESULT d3dx9_buffer_init(struct ID3DXBufferImpl *buffer, DWORD size)
 114 {
 115     buffer->ID3DXBuffer_iface.lpVtbl = &ID3DXBufferImpl_Vtbl;
 116     buffer->ref = 1;
 117     buffer->size = size;
 118
 119     buffer->buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
 120     if (!buffer->buffer)
 121     {
 122         ERR("Failed to allocate buffer memory\n");
 123         return E_OUTOFMEMORY;
 124     }
 125
 126     return D3D_OK;
 127 }
 128
 129 HRESULT WINAPI D3DXCreateBuffer(DWORD size, ID3DXBuffer **buffer)
 130 {
 131     struct ID3DXBufferImpl *object;
 132     HRESULT hr;
 133
 134     if (!buffer)
 135     {
 136         WARN("Invalid buffer specified.\n");
 137         return D3DERR_INVALIDCALL;
 138     }
 139
 140     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
 141     if (!object)
 142         return E_OUTOFMEMORY;
 143
 144     hr = d3dx9_buffer_init(object, size);
 145     if (FAILED(hr))
 146     {
 147         WARN("Failed to initialize buffer, hr %#x.\n", hr);
 148         HeapFree(GetProcessHeap(), 0, object);
 149         return hr;
 150     }
 151
 152     *buffer = &object->ID3DXBuffer_iface;
 153
 154     TRACE("Created ID3DXBuffer %p.\n", *buffer);
 155
 156     return D3D_OK;
 157 }