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