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 ID3DXBuffer %p.\n", *buffer); 150 151 return D3D_OK; 152 } 153