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 <stdarg.h>
  21
  22 #define COBJMACROS
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "wine/debug.h"
  27 #include "wine/unicode.h"
  28
  29 #include "d3dx9_36_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);
  32
  33 struct ID3DXBufferImpl
  34 {
  35     ID3DXBuffer ID3DXBuffer_iface;
  36     LONG ref;
  37
  38     void *buffer;
  39     DWORD size;
  40 };
  41
  42 static inline struct ID3DXBufferImpl *impl_from_ID3DXBuffer(ID3DXBuffer *iface)
  43 {
  44     return CONTAINING_RECORD(iface, struct ID3DXBufferImpl, ID3DXBuffer_iface);
  45 }
  46
  47 static HRESULT WINAPI ID3DXBufferImpl_QueryInterface(ID3DXBuffer *iface, REFIID riid, void **ppobj)
  48 {
  49     TRACE("iface %p, riid %s, object %p\n", iface, debugstr_guid(riid), ppobj);
  50
  51     if (IsEqualGUID(riid, &IID_IUnknown)
  52       || IsEqualGUID(riid, &IID_ID3DXBuffer))
  53     {
  54         IUnknown_AddRef(iface);
  55         *ppobj = iface;
  56         return D3D_OK;
  57     }
  58
  59     WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));
  60
  61     return E_NOINTERFACE;
  62 }
  63
  64 static ULONG WINAPI ID3DXBufferImpl_AddRef(ID3DXBuffer *iface)
  65 {
  66     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  67     ULONG ref = InterlockedIncrement(&This->ref);
  68
  69     TRACE("%p increasing refcount to %u\n", This, ref);
  70
  71     return ref;
  72 }
  73
  74 static ULONG WINAPI ID3DXBufferImpl_Release(ID3DXBuffer *iface)
  75 {
  76     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  77     ULONG ref = InterlockedDecrement(&This->ref);
  78
  79     TRACE("%p decreasing refcount to %u\n", This, ref);
  80
  81     if (ref == 0)
  82     {
  83         HeapFree(GetProcessHeap(), 0, This->buffer);
  84         HeapFree(GetProcessHeap(), 0, This);
  85     }
  86
  87     return ref;
  88 }
  89
  90 static LPVOID WINAPI ID3DXBufferImpl_GetBufferPointer(ID3DXBuffer *iface)
  91 {
  92     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
  93
  94     TRACE("iface %p\n", iface);
  95
  96     return This->buffer;
  97 }
  98
  99 static DWORD WINAPI ID3DXBufferImpl_GetBufferSize(ID3DXBuffer *iface)
 100 {
 101     struct ID3DXBufferImpl *This = impl_from_ID3DXBuffer(iface);
 102
 103     TRACE("iface %p\n", iface);
 104
 105     return This->size;
 106 }
 107
 108 static const struct ID3DXBufferVtbl ID3DXBufferImpl_Vtbl =
 109 {
 110     /* IUnknown methods */
 111     ID3DXBufferImpl_QueryInterface,
 112     ID3DXBufferImpl_AddRef,
 113     ID3DXBufferImpl_Release,
 114     /* ID3DXBuffer methods */
 115     ID3DXBufferImpl_GetBufferPointer,
 116     ID3DXBufferImpl_GetBufferSize
 117 };
 118
 119 static HRESULT d3dx9_buffer_init(struct ID3DXBufferImpl *buffer, DWORD size)
 120 {
 121     buffer->ID3DXBuffer_iface.lpVtbl = &ID3DXBufferImpl_Vtbl;
 122     buffer->ref = 1;
 123     buffer->size = size;
 124
 125     buffer->buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
 126     if (!buffer->buffer)
 127     {
 128         ERR("Failed to allocate buffer memory\n");
 129         return E_OUTOFMEMORY;
 130     }
 131
 132     return D3D_OK;
 133 }
 134
 135 HRESULT WINAPI D3DXCreateBuffer(DWORD size, LPD3DXBUFFER *buffer)
 136 {
 137     struct ID3DXBufferImpl *object;
 138     HRESULT hr;
 139
 140     if (!buffer)
 141     {
 142         WARN("Invalid buffer specified.\n");
 143         return D3DERR_INVALIDCALL;
 144     }
 145
 146     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
 147     if (!object)
 148     {
 149         ERR("Failed to allocate buffer memory\n");
 150         return E_OUTOFMEMORY;
 151     }
 152
 153     hr = d3dx9_buffer_init(object, size);
 154     if (FAILED(hr))
 155     {
 156         WARN("Failed to initialize buffer, hr %#x.\n", hr);
 157         HeapFree(GetProcessHeap(), 0, object);
 158         return hr;
 159     }
 160
 161     *buffer = &object->ID3DXBuffer_iface;
 162
 163     TRACE("Created ID3DBuffer %p\n", *buffer);
 164
 165     return D3D_OK;
 166 }