dlls/wined3d/vertexbuffer.c

   1 /*
   2  * IWineD3DVertexBuffer Implementation
   3  *
   4  * Copyright 2002-2005 Jason Edmeades
   5  *                     Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2007 Stefan Dösinger for CodeWeavers
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "config.h"
  25 #include "wined3d_private.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  28 #define GLINFO_LOCATION This->resource.wineD3DDevice->adapter->gl_info
  29
  30 #define VB_MAXDECLCHANGES     100     /* After that number we stop converting */
  31 #define VB_RESETDECLCHANGE    1000    /* Reset the changecount after that number of draws */
  32
  33 /* *******************************************
  34    IWineD3DVertexBuffer IUnknown parts follow
  35    ******************************************* */
  36 static HRESULT WINAPI IWineD3DVertexBufferImpl_QueryInterface(IWineD3DVertexBuffer *iface, REFIID riid, LPVOID *ppobj)
  37 {
  38     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
  39     TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppobj);
  40     if (IsEqualGUID(riid, &IID_IUnknown)
  41         || IsEqualGUID(riid, &IID_IWineD3DBase)
  42         || IsEqualGUID(riid, &IID_IWineD3DResource)
  43         || IsEqualGUID(riid, &IID_IWineD3DVertexBuffer)){
  44         IUnknown_AddRef(iface);
  45         *ppobj = This;
  46         return S_OK;
  47     }
  48     *ppobj = NULL;
  49     return E_NOINTERFACE;
  50 }
  51
  52 static ULONG WINAPI IWineD3DVertexBufferImpl_AddRef(IWineD3DVertexBuffer *iface) {
  53     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
  54     ULONG ref = InterlockedIncrement(&This->resource.ref);
  55     TRACE("(%p) : AddRef increasing from %d\n", This, ref - 1);
  56     return ref;
  57 }
  58
  59 static ULONG WINAPI IWineD3DVertexBufferImpl_Release(IWineD3DVertexBuffer *iface) {
  60     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
  61     ULONG ref = InterlockedDecrement(&This->resource.ref);
  62     TRACE("(%p) : Releasing from %d\n", This, ref + 1);
  63     if (ref == 0) {
  64
  65         if(This->vbo) {
  66             IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
  67
  68             ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
  69             ENTER_GL();
  70             GL_EXTCALL(glDeleteBuffersARB(1, &This->vbo));
  71             checkGLcall("glDeleteBuffersARB");
  72             LEAVE_GL();
  73         }
  74
  75         resource_cleanup((IWineD3DResource *)iface);
  76         HeapFree(GetProcessHeap(), 0, This);
  77     }
  78     return ref;
  79 }
  80
  81 /* ****************************************************
  82    IWineD3DVertexBuffer IWineD3DResource parts follow
  83    **************************************************** */
  84 static HRESULT WINAPI IWineD3DVertexBufferImpl_GetDevice(IWineD3DVertexBuffer *iface, IWineD3DDevice** ppDevice) {
  85     return resource_get_device((IWineD3DResource *)iface, ppDevice);
  86 }
  87
  88 static HRESULT WINAPI IWineD3DVertexBufferImpl_SetPrivateData(IWineD3DVertexBuffer *iface, REFGUID refguid, CONST void* pData, DWORD SizeOfData, DWORD Flags) {
  89     return resource_set_private_data((IWineD3DResource *)iface, refguid, pData, SizeOfData, Flags);
  90 }
  91
  92 static HRESULT WINAPI IWineD3DVertexBufferImpl_GetPrivateData(IWineD3DVertexBuffer *iface, REFGUID refguid, void* pData, DWORD* pSizeOfData) {
  93     return resource_get_private_data((IWineD3DResource *)iface, refguid, pData, pSizeOfData);
  94 }
  95
  96 static HRESULT WINAPI IWineD3DVertexBufferImpl_FreePrivateData(IWineD3DVertexBuffer *iface, REFGUID refguid) {
  97     return resource_free_private_data((IWineD3DResource *)iface, refguid);
  98 }
  99
 100 static DWORD    WINAPI IWineD3DVertexBufferImpl_SetPriority(IWineD3DVertexBuffer *iface, DWORD PriorityNew) {
 101     return resource_set_priority((IWineD3DResource *)iface, PriorityNew);
 102 }
 103
 104 static DWORD    WINAPI IWineD3DVertexBufferImpl_GetPriority(IWineD3DVertexBuffer *iface) {
 105     return resource_get_priority((IWineD3DResource *)iface);
 106 }
 107
 108 static inline void fixup_d3dcolor(DWORD *pos) {
 109     DWORD srcColor = *pos;
 110
 111     /* Color conversion like in drawStridedSlow. watch out for little endianity
 112      * If we want that stuff to work on big endian machines too we have to consider more things
 113      *
 114      * 0xff000000: Alpha mask
 115      * 0x00ff0000: Blue mask
 116      * 0x0000ff00: Green mask
 117      * 0x000000ff: Red mask
 118      */
 119     *pos = 0;
 120     *pos |= (srcColor & 0xff00ff00)      ;   /* Alpha Green */
 121     *pos |= (srcColor & 0x00ff0000) >> 16;   /* Red */
 122     *pos |= (srcColor & 0x000000ff) << 16;   /* Blue */
 123 }
 124
 125 static inline void fixup_transformed_pos(float *p) {
 126     float x, y, z, w;
 127
 128     /* rhw conversion like in drawStridedSlow */
 129     if(p[3] == 1.0 || ((p[3] < eps) && (p[3] > -eps))) {
 130         x = p[0];
 131         y = p[1];
 132         z = p[2];
 133         w = 1.0;
 134     } else {
 135         w = 1.0 / p[3];
 136         x = p[0] * w;
 137         y = p[1] * w;
 138         z = p[2] * w;
 139     }
 140     p[0] = x;
 141     p[1] = y;
 142     p[2] = z;
 143     p[3] = w;
 144 }
 145
 146 static DWORD *find_conversion_shift(IWineD3DVertexBufferImpl *This, const WineDirect3DVertexStridedData *strided, DWORD stride)
 147 {
 148     DWORD *ret, i, shift, j, type;
 149     DWORD orig_type_size;
 150
 151     if(!stride) {
 152         TRACE("No shift\n");
 153         return NULL;
 154     }
 155
 156     This->conv_stride = stride;
 157     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DWORD) * stride);
 158     for(i = 0; i < MAX_ATTRIBS; i++) {
 159         if(strided->u.input[i].VBO != This->vbo) continue;
 160
 161         type = strided->u.input[i].dwType;
 162         if(type == WINED3DDECLTYPE_FLOAT16_2) {
 163             shift = 4;
 164         } else if(type == WINED3DDECLTYPE_FLOAT16_4) {
 165             shift = 8;
 166             /* Pre-shift the last 4 bytes in the FLOAT16_4 by 4 bytes - this makes FLOAT16_2 and FLOAT16_4 conversions
 167              * compatible
 168              */
 169             for(j = 4; j < 8; j++) {
 170                 ret[(DWORD_PTR) strided->u.input[i].lpData + j ] += 4;
 171             }
 172         } else {
 173             shift = 0;
 174         }
 175         This->conv_stride += shift;
 176
 177         if(shift) {
 178             orig_type_size = WINED3D_ATR_TYPESIZE(type) * WINED3D_ATR_SIZE(type);
 179             for(j = (DWORD_PTR) strided->u.input[i].lpData + orig_type_size; j < stride; j++) {
 180                 ret[j] += shift;
 181             }
 182         }
 183     }
 184
 185     if(TRACE_ON(d3d)) {
 186         TRACE("Dumping conversion shift:\n");
 187         for(i = 0; i < stride; i++) {
 188             TRACE("[%d]", ret[i]);
 189         }
 190         TRACE("\n");
 191     }
 192     return ret;
 193 }
 194
 195 static inline BOOL process_converted_attribute(IWineD3DVertexBufferImpl *This,
 196                                                const enum vbo_conversion_type conv_type,
 197                                                const WineDirect3DStridedData *attrib,
 198                                                DWORD *stride_this_run, const DWORD type) {
 199     DWORD attrib_size;
 200     BOOL ret = FALSE;
 201     int i;
 202     DWORD offset = This->resource.wineD3DDevice->stateBlock->streamOffset[attrib->streamNo];
 203     DWORD_PTR data;
 204
 205     /* Check for some valid situations which cause us pain. One is if the buffer is used for
 206      * constant attributes(stride = 0), the other one is if the buffer is used on two streams
 207      * with different strides. In the 2nd case we might have to drop conversion entirely,
 208      * it is possible that the same bytes are once read as FLOAT2 and once as UBYTE4N.
 209      */
 210     if(attrib->dwStride == 0) {
 211         FIXME("%s used with stride 0, let's hope we get the vertex stride from somewhere else\n",
 212                 debug_d3ddecltype(type));
 213     } else if(attrib->dwStride != *stride_this_run &&
 214                 *stride_this_run) {
 215         FIXME("Got two concurrent strides, %d and %d\n", attrib->dwStride, *stride_this_run);
 216     } else {
 217         *stride_this_run = attrib->dwStride;
 218         if(This->stride != *stride_this_run) {
 219             /* We rely that this happens only on the first converted attribute that is found,
 220              * if at all. See above check
 221              */
 222             TRACE("Reconverting because converted attributes occur, and the stride changed\n");
 223             This->stride = *stride_this_run;
 224             HeapFree(GetProcessHeap(), HEAP_ZERO_MEMORY, This->conv_map);
 225             This->conv_map = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This->conv_map) * This->stride);
 226             ret = TRUE;
 227         }
 228     }
 229
 230     data = (((DWORD_PTR) attrib->lpData) + offset) % This->stride;
 231     attrib_size = WINED3D_ATR_SIZE(type) * WINED3D_ATR_TYPESIZE(type);
 232     for(i = 0; i < attrib_size; i++) {
 233         if(This->conv_map[data + i] != conv_type) {
 234             TRACE("Byte %ld in vertex changed\n", i + data);
 235             TRACE("It was type %d, is %d now\n", This->conv_map[data + i], conv_type);
 236             ret = TRUE;
 237             This->conv_map[data + i] = conv_type;
 238         }
 239     }
 240     return ret;
 241 }
 242
 243 static inline BOOL check_attribute(IWineD3DVertexBufferImpl *This, const WineDirect3DStridedData *attrib,
 244                                    const BOOL check_d3dcolor, const BOOL is_ffp_position, const BOOL is_ffp_color,
 245                                    DWORD *stride_this_run, BOOL *float16_used) {
 246     BOOL ret = FALSE;
 247     DWORD type;
 248
 249     /* Ignore attributes that do not have our vbo. After that check we can be sure that the attribute is
 250      * there, on nonexistent attribs the vbo is 0.
 251      */
 252     if(attrib->VBO != This->vbo) return FALSE;
 253
 254     type = attrib->dwType;
 255     /* Look for newly appeared conversion */
 256     if(!GL_SUPPORT(NV_HALF_FLOAT) && (
 257        type == WINED3DDECLTYPE_FLOAT16_2 ||
 258        type == WINED3DDECLTYPE_FLOAT16_4)) {
 259
 260         ret = process_converted_attribute(This, CONV_FLOAT16_2, attrib, stride_this_run, type);
 261
 262         if(is_ffp_position) {
 263             FIXME("Test FLOAT16 fixed function processing positions\n");
 264         } else if(is_ffp_color) {
 265             FIXME("test FLOAT16 fixed function processing colors\n");
 266         }
 267         *float16_used = TRUE;
 268     } else if(check_d3dcolor && type == WINED3DDECLTYPE_D3DCOLOR) {
 269
 270         ret = process_converted_attribute(This, CONV_D3DCOLOR, attrib, stride_this_run, WINED3DDECLTYPE_D3DCOLOR);
 271
 272         if(!is_ffp_color) {
 273             FIXME("Test for non-color fixed function D3DCOLOR type\n");
 274         }
 275     } else if(is_ffp_position && type == WINED3DDECLTYPE_FLOAT4) {
 276         ret = process_converted_attribute(This, CONV_POSITIONT, attrib, stride_this_run, WINED3DDECLTYPE_FLOAT4);
 277     } else if(This->conv_map) {
 278         ret = process_converted_attribute(This, CONV_NONE, attrib, stride_this_run, type);
 279     }
 280     return ret;
 281 }
 282
 283 static inline BOOL IWineD3DVertexBufferImpl_FindDecl(IWineD3DVertexBufferImpl *This)
 284 {
 285     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 286     BOOL ret = FALSE;
 287     int i;
 288     DWORD stride_this_run = 0;
 289     BOOL float16_used = FALSE;
 290
 291     /* In d3d7 the vertex buffer declaration NEVER changes because it is stored in the d3d7 vertex buffer.
 292      * Once we have our declaration there is no need to look it up again.
 293      */
 294     if(((IWineD3DImpl *)device->wineD3D)->dxVersion == 7 && This->Flags & VBFLAG_HASDESC) {
 295         return FALSE;
 296     }
 297
 298     TRACE("Finding vertex buffer conversion information\n");
 299     /* Certain declaration types need some fixups before we can pass them to opengl. This means D3DCOLOR attributes with fixed
 300      * function vertex processing, FLOAT4 POSITIONT with fixed function, and FLOAT16 if GL_NV_half_float is not supported.
 301      *
 302      * The vertex buffer FVF doesn't help with finding them, we have to use the decoded vertex declaration and pick the things
 303      * that concern the current buffer. A problem with this is that this can change between draws, so we have to validate
 304      * the information and reprocess the buffer if it changes, and avoid false positives for performance reasons.
 305      *
 306      * We have to distinguish between vertex shaders and fixed function to pick the way we access the
 307      * strided vertex information.
 308      *
 309      * This code sets up a per-byte array with the size of the detected stride of the arrays in the
 310      * buffer. For each byte we have a field that marks the conversion needed on this byte. For example,
 311      * the following declaration with fixed function vertex processing:
 312      *
 313      *      POSITIONT, FLOAT4
 314      *      NORMAL, FLOAT3
 315      *      DIFFUSE, FLOAT16_4
 316      *      SPECULAR, D3DCOLOR
 317      *
 318      * Will result in
 319      * {                 POSITIONT                    }{             NORMAL                }{    DIFFUSE          }{SPECULAR }
 320      * [P][P][P][P][P][P][P][P][P][P][P][P][P][P][P][P][0][0][0][0][0][0][0][0][0][0][0][0][F][F][F][F][F][F][F][F][C][C][C][C]
 321      *
 322      * Where in this example map P means 4 component position conversion, 0 means no conversion, F means FLOAT16_2 conversion
 323      * and C means D3DCOLOR conversion(red / blue swizzle).
 324      *
 325      * If we're doing conversion and the stride changes we have to reconvert the whole buffer. Note that we do not mind if the
 326      * semantic changes, we only care for the conversion type. So if the NORMAL is replaced with a TEXCOORD, nothing has to be
 327      * done, or if the DIFFUSE is replaced with a D3DCOLOR BLENDWEIGHT we can happily dismiss the change. Some conversion types
 328      * depend on the semantic as well, for example a FLOAT4 texcoord needs no conversion while a FLOAT4 positiont needs one
 329      */
 330     if (use_vs(device->stateBlock))
 331     {
 332         TRACE("vshader\n");
 333         /* If the current vertex declaration is marked for no half float conversion don't bother to
 334          * analyse the strided streams in depth, just set them up for no conversion. Return decl changed
 335          * if we used conversion before
 336          */
 337         if(!((IWineD3DVertexDeclarationImpl *) device->stateBlock->vertexDecl)->half_float_conv_needed) {
 338             if(This->conv_map) {
 339                 TRACE("Now using shaders without conversion, but conversion used before\n");
 340                 HeapFree(GetProcessHeap(), 0, This->conv_map);
 341                 HeapFree(GetProcessHeap(), 0, This->conv_shift);
 342                 This->conv_map = NULL;
 343                 This->stride = 0;
 344                 This->conv_shift = NULL;
 345                 This->conv_stride = 0;
 346                 return TRUE;
 347             } else {
 348                 return FALSE;
 349             }
 350         }
 351         for(i = 0; i < MAX_ATTRIBS; i++) {
 352             ret = check_attribute(This, &device->strided_streams.u.input[i], FALSE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 353         }
 354
 355         /* Recalculate the conversion shift map if the declaration has changed,
 356          * and we're using float16 conversion or used it on the last run
 357          */
 358         if(ret && (float16_used || This->conv_map)) {
 359             HeapFree(GetProcessHeap(), 0, This->conv_shift);
 360             This->conv_shift = find_conversion_shift(This, &device->strided_streams, This->stride);
 361         }
 362     } else {
 363         /* Fixed function is a bit trickier. We have to take care for D3DCOLOR types, FLOAT4 positions and of course
 364          * FLOAT16s if not supported. Also, we can't iterate over the array, so use macros to generate code for all
 365          * the attributes that our current fixed function pipeline implementation cares for.
 366          */
 367         BOOL support_d3dcolor = GL_SUPPORT(EXT_VERTEX_ARRAY_BGRA);
 368         ret = check_attribute(This, &device->strided_streams.u.s.position,     TRUE, TRUE,  FALSE, &stride_this_run, &float16_used) || ret;
 369         ret = check_attribute(This, &device->strided_streams.u.s.normal,       TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 370         ret = check_attribute(This, &device->strided_streams.u.s.diffuse,      !support_d3dcolor, FALSE, TRUE,  &stride_this_run, &float16_used) || ret;
 371         ret = check_attribute(This, &device->strided_streams.u.s.specular,     !support_d3dcolor, FALSE, TRUE,  &stride_this_run, &float16_used) || ret;
 372         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[0], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 373         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[1], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 374         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[2], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 375         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[3], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 376         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[4], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 377         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[5], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 378         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[6], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 379         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[7], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 380
 381         if(float16_used) FIXME("Float16 conversion used with fixed function vertex processing\n");
 382     }
 383
 384     if(stride_this_run == 0 && This->conv_map) {
 385         /* Sanity test */
 386         if(ret == FALSE) {
 387             ERR("no converted attributes found, old conversion map exists, and no declaration change???\n");
 388         }
 389         HeapFree(GetProcessHeap(), 0, This->conv_map);
 390         This->conv_map = NULL;
 391         This->stride = 0;
 392     }
 393     This->Flags |= VBFLAG_HASDESC;
 394
 395     if(ret) TRACE("Conversion information changed\n");
 396     return ret;
 397 }
 398
 399 static void check_vbo_size(IWineD3DVertexBufferImpl *This) {
 400     DWORD size = This->conv_stride ? This->conv_stride * (This->resource.size / This->stride) : This->resource.size;
 401     if(This->vbo_size != size) {
 402         TRACE("Old size %d, creating new size %d\n", This->vbo_size, size);
 403         ENTER_GL();
 404         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 405         checkGLcall("glBindBufferARB");
 406         GL_EXTCALL(glBufferDataARB(GL_ARRAY_BUFFER_ARB, size, NULL, This->vbo_usage));
 407         This->vbo_size = size;
 408         checkGLcall("glBufferDataARB");
 409         LEAVE_GL();
 410     }
 411 }
 412
 413 static void CreateVBO(IWineD3DVertexBufferImpl *This) {
 414     GLenum error, glUsage;
 415     DWORD vboUsage = This->resource.usage;
 416     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 417
 418     TRACE("Creating an OpenGL vertex buffer object for IWineD3DVertexBuffer %p  Usage(%s)\n", This, debug_d3dusage(vboUsage));
 419
 420     /* Make sure that a context is there. Needed in a multithreaded environment. Otherwise this call is a nop */
 421     ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 422     ENTER_GL();
 423
 424     /* Make sure that the gl error is cleared. Do not use checkGLcall
 425     * here because checkGLcall just prints a fixme and continues. However,
 426     * if an error during VBO creation occurs we can fall back to non-vbo operation
 427     * with full functionality(but performance loss)
 428     */
 429     while(glGetError() != GL_NO_ERROR);
 430
 431     /* Basically the FVF parameter passed to CreateVertexBuffer is no good
 432     * It is the FVF set with IWineD3DDevice::SetFVF or the Vertex Declaration set with
 433     * IWineD3DDevice::SetVertexDeclaration that decides how the vertices in the buffer
 434     * look like. This means that on each DrawPrimitive call the vertex buffer has to be verified
 435     * to check if the rhw and color values are in the correct format.
 436     */
 437
 438     GL_EXTCALL(glGenBuffersARB(1, &This->vbo));
 439     error = glGetError();
 440     if(This->vbo == 0 || error != GL_NO_ERROR) {
 441         WARN("Failed to create a VBO with error %s (%#x)\n", debug_glerror(error), error);
 442         goto error;
 443     }
 444
 445     GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 446     error = glGetError();
 447     if(error != GL_NO_ERROR) {
 448         WARN("Failed to bind the VBO with error %s (%#x)\n", debug_glerror(error), error);
 449         goto error;
 450     }
 451
 452     /* Don't use static, because dx apps tend to update the buffer
 453     * quite often even if they specify 0 usage. Because we always keep the local copy
 454     * we never read from the vbo and can create a write only opengl buffer.
 455     */
 456     switch(vboUsage & (WINED3DUSAGE_WRITEONLY | WINED3DUSAGE_DYNAMIC) ) {
 457         case WINED3DUSAGE_WRITEONLY | WINED3DUSAGE_DYNAMIC:
 458         case WINED3DUSAGE_DYNAMIC:
 459             TRACE("Gl usage = GL_STREAM_DRAW\n");
 460             glUsage = GL_STREAM_DRAW_ARB;
 461             break;
 462         case WINED3DUSAGE_WRITEONLY:
 463         default:
 464             TRACE("Gl usage = GL_DYNAMIC_DRAW\n");
 465             glUsage = GL_DYNAMIC_DRAW_ARB;
 466             break;
 467     }
 468
 469     /* Reserve memory for the buffer. The amount of data won't change
 470     * so we are safe with calling glBufferData once with a NULL ptr and
 471     * calling glBufferSubData on updates
 472     */
 473     GL_EXTCALL(glBufferDataARB(GL_ARRAY_BUFFER_ARB, This->resource.size, NULL, glUsage));
 474     error = glGetError();
 475     if(error != GL_NO_ERROR) {
 476         WARN("glBufferDataARB failed with error %s (%#x)\n", debug_glerror(error), error);
 477         goto error;
 478     }
 479     This->vbo_size = This->resource.size;
 480     This->vbo_usage = glUsage;
 481     This->dirtystart = 0;
 482     This->dirtyend = This->resource.size;
 483     This->Flags |= VBFLAG_DIRTY;
 484
 485     LEAVE_GL();
 486
 487     return;
 488     error:
 489             /* Clean up all vbo init, but continue because we can work without a vbo :-) */
 490             FIXME("Failed to create a vertex buffer object. Continuing, but performance issues can occur\n");
 491     if(This->vbo) GL_EXTCALL(glDeleteBuffersARB(1, &This->vbo));
 492     This->vbo = 0;
 493     LEAVE_GL();
 494     return;
 495 }
 496
 497 static void     WINAPI IWineD3DVertexBufferImpl_PreLoad(IWineD3DVertexBuffer *iface) {
 498     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *) iface;
 499     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 500     BYTE *data;
 501     UINT start = 0, end = 0, vertices;
 502     BOOL declChanged = FALSE;
 503     int i, j;
 504     TRACE("(%p)->()\n", This);
 505
 506     if(!This->vbo) {
 507         /* TODO: Make converting independent from VBOs */
 508         if(This->Flags & VBFLAG_CREATEVBO) {
 509             CreateVBO(This);
 510             This->Flags &= ~VBFLAG_CREATEVBO;
 511         } else {
 512             return; /* Not doing any conversion */
 513         }
 514     }
 515
 516     /* Reading the declaration makes only sense if the stateblock is finalized and the buffer bound to a stream */
 517     if(device->isInDraw && This->bindCount > 0) {
 518         declChanged = IWineD3DVertexBufferImpl_FindDecl(This);
 519     } else if(This->Flags & VBFLAG_HASDESC) {
 520         /* Reuse the declaration stored in the buffer. It will most likely not change, and if it does
 521          * the stream source state handler will call PreLoad again and the change will be caught
 522          */
 523     } else {
 524         /* Cannot get a declaration, and no declaration is stored in the buffer. It is pointless to preload
 525          * now. When the buffer is used, PreLoad will be called by the stream source state handler and a valid
 526          * declaration for the buffer can be found
 527          */
 528         return;
 529     }
 530
 531     /* If applications change the declaration over and over, reconverting all the time is a huge
 532      * performance hit. So count the declaration changes and release the VBO if there are too many
 533      * of them (and thus stop converting)
 534      */
 535     if(declChanged) {
 536         This->declChanges++;
 537         This->draws = 0;
 538
 539         if(This->declChanges > VB_MAXDECLCHANGES) {
 540             FIXME("Too many declaration changes, stopping converting\n");
 541             ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 542             ENTER_GL();
 543             GL_EXTCALL(glDeleteBuffersARB(1, &This->vbo));
 544             checkGLcall("glDeleteBuffersARB");
 545             LEAVE_GL();
 546             This->vbo = 0;
 547             HeapFree(GetProcessHeap(), 0, This->conv_shift);
 548
 549             /* The stream source state handler might have read the memory of the vertex buffer already
 550              * and got the memory in the vbo which is not valid any longer. Dirtify the stream source
 551              * to force a reload. This happens only once per changed vertexbuffer and should occur rather
 552              * rarely
 553              */
 554             IWineD3DDeviceImpl_MarkStateDirty(device, STATE_STREAMSRC);
 555
 556             return;
 557         }
 558         check_vbo_size(This);
 559     } else {
 560         /* However, it is perfectly fine to change the declaration every now and then. We don't want a game that
 561          * changes it every minute drop the VBO after VB_MAX_DECL_CHANGES minutes. So count draws without
 562          * decl changes and reset the decl change count after a specific number of them
 563          */
 564         This->draws++;
 565         if(This->draws > VB_RESETDECLCHANGE) This->declChanges = 0;
 566     }
 567
 568     if(declChanged) {
 569         /* The declaration changed, reload the whole buffer */
 570         WARN("Reloading buffer because of decl change\n");
 571         start = 0;
 572         end = This->resource.size;
 573     } else if(This->Flags & VBFLAG_DIRTY) {
 574         /* No decl change, but dirty data, reload the changed stuff */
 575         if(This->conv_shift) {
 576             if(This->dirtystart != 0 || This->dirtyend != 0) {
 577                 FIXME("Implement partial buffer loading with shifted conversion\n");
 578             }
 579         }
 580         start = This->dirtystart;
 581         end = This->dirtyend;
 582     } else {
 583         /* Desc not changed, buffer not dirty, nothing to do :-) */
 584         return;
 585     }
 586
 587     /* Mark the buffer clean */
 588     This->Flags &= ~VBFLAG_DIRTY;
 589     This->dirtystart = 0;
 590     This->dirtyend = 0;
 591
 592     if(!This->conv_map) {
 593         /* That means that there is nothing to fixup. Just upload from This->resource.allocatedMemory
 594          * directly into the vbo. Do not free the system memory copy because drawPrimitive may need it if
 595          * the stride is 0, for instancing emulation, vertex blending emulation or shader emulation.
 596          */
 597         TRACE("No conversion needed\n");
 598
 599         if(!device->isInDraw) {
 600             ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 601         }
 602         ENTER_GL();
 603         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 604         checkGLcall("glBindBufferARB");
 605         GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, start, end-start, This->resource.allocatedMemory + start));
 606         checkGLcall("glBufferSubDataARB");
 607         LEAVE_GL();
 608         return;
 609     }
 610
 611     /* Now for each vertex in the buffer that needs conversion */
 612     vertices = This->resource.size / This->stride;
 613
 614     if(This->conv_shift) {
 615         TRACE("Shifted conversion\n");
 616         data = HeapAlloc(GetProcessHeap(), 0, vertices * This->conv_stride);
 617
 618         for(i = start / This->stride; i < min((end / This->stride) + 1, vertices); i++) {
 619             for(j = 0; j < This->stride; j++) {
 620                 switch(This->conv_map[j]) {
 621                     case CONV_NONE:
 622                         data[This->conv_stride * i + j + This->conv_shift[j]] = This->resource.allocatedMemory[This->stride * i + j];
 623                         break;
 624
 625                     case CONV_FLOAT16_2:
 626                     {
 627                         float *out = (float *) (&data[This->conv_stride * i + j + This->conv_shift[j]]);
 628                         const WORD *in = (WORD *) (&This->resource.allocatedMemory[i * This->stride + j]);
 629
 630                         out[1] = float_16_to_32(in + 1);
 631                         out[0] = float_16_to_32(in + 0);
 632                         j += 3;    /* Skip 3 additional bytes,as a FLOAT16_2 has 4 bytes */
 633                         break;
 634                     }
 635
 636                     default:
 637                         FIXME("Unimplemented conversion %d in shifted conversion\n", This->conv_map[j]);
 638                 }
 639             }
 640         }
 641
 642         ENTER_GL();
 643         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 644         checkGLcall("glBindBufferARB");
 645         GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, vertices * This->conv_stride, data));
 646         checkGLcall("glBufferSubDataARB");
 647         LEAVE_GL();
 648
 649     } else {
 650         data = HeapAlloc(GetProcessHeap(), 0, This->resource.size);
 651         memcpy(data + start, This->resource.allocatedMemory + start, end - start);
 652         for(i = start / This->stride; i < min((end / This->stride) + 1, vertices); i++) {
 653             for(j = 0; j < This->stride; j++) {
 654                 switch(This->conv_map[j]) {
 655                     case CONV_NONE:
 656                         /* Done already */
 657                         j += 3;
 658                         break;
 659                     case CONV_D3DCOLOR:
 660                         fixup_d3dcolor((DWORD *) (data + i * This->stride + j));
 661                         j += 3;
 662                         break;
 663
 664                     case CONV_POSITIONT:
 665                         fixup_transformed_pos((float *) (data + i * This->stride + j));
 666                         j += 15;
 667                         break;
 668
 669                     case CONV_FLOAT16_2:
 670                         ERR("Did not expect FLOAT16 conversion in unshifted conversion\n");
 671                     default:
 672                         FIXME("Unimplemented conversion %d in shifted conversion\n", This->conv_map[j]);
 673                 }
 674             }
 675         }
 676
 677         ENTER_GL();
 678         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 679         checkGLcall("glBindBufferARB");
 680         GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, start, end - start, data + start));
 681         checkGLcall("glBufferSubDataARB");
 682         LEAVE_GL();
 683     }
 684
 685     HeapFree(GetProcessHeap(), 0, data);
 686 }
 687
 688 static void WINAPI IWineD3DVertexBufferImpl_UnLoad(IWineD3DVertexBuffer *iface) {
 689     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *) iface;
 690     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 691     TRACE("(%p)\n", This);
 692
 693     /* This is easy: The whole content is shadowed in This->resource.allocatedMemory,
 694      * so we only have to destroy the vbo. Only do it if we have a vbo, which implies
 695      * that vbos are supported
 696      */
 697     if(This->vbo) {
 698         ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 699         ENTER_GL();
 700         GL_EXTCALL(glDeleteBuffersARB(1, &This->vbo));
 701         checkGLcall("glDeleteBuffersARB");
 702         LEAVE_GL();
 703         This->vbo = 0;
 704         This->Flags |= VBFLAG_CREATEVBO; /* Recreate the VBO next load */
 705     }
 706 }
 707
 708 static WINED3DRESOURCETYPE WINAPI IWineD3DVertexBufferImpl_GetType(IWineD3DVertexBuffer *iface) {
 709     return resource_get_type((IWineD3DResource *)iface);
 710 }
 711
 712 static HRESULT WINAPI IWineD3DVertexBufferImpl_GetParent(IWineD3DVertexBuffer *iface, IUnknown **pParent) {
 713     return resource_get_parent((IWineD3DResource *)iface, pParent);
 714 }
 715
 716 /* ******************************************************
 717    IWineD3DVertexBuffer IWineD3DVertexBuffer parts follow
 718    ****************************************************** */
 719 static HRESULT  WINAPI IWineD3DVertexBufferImpl_Lock(IWineD3DVertexBuffer *iface, UINT OffsetToLock, UINT SizeToLock, BYTE** ppbData, DWORD Flags) {
 720     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
 721     BYTE *data;
 722     TRACE("(%p)->%d, %d, %p, %08x\n", This, OffsetToLock, SizeToLock, ppbData, Flags);
 723
 724     InterlockedIncrement(&This->lockcount);
 725
 726     if(This->Flags & VBFLAG_DIRTY) {
 727         if(This->dirtystart > OffsetToLock) This->dirtystart = OffsetToLock;
 728         if(SizeToLock) {
 729             if(This->dirtyend < OffsetToLock + SizeToLock) This->dirtyend = OffsetToLock + SizeToLock;
 730         } else {
 731             This->dirtyend = This->resource.size;
 732         }
 733     } else {
 734         This->dirtystart = OffsetToLock;
 735         if(SizeToLock)
 736             This->dirtyend = OffsetToLock + SizeToLock;
 737         else
 738             This->dirtyend = This->resource.size;
 739     }
 740
 741     data = This->resource.allocatedMemory;
 742     This->Flags |= VBFLAG_DIRTY;
 743     *ppbData = data + OffsetToLock;
 744
 745     TRACE("(%p) : returning memory of %p (base:%p,offset:%u)\n", This, data + OffsetToLock, data, OffsetToLock);
 746     /* TODO: check Flags compatibility with This->currentDesc.Usage (see MSDN) */
 747     return WINED3D_OK;
 748 }
 749 static HRESULT WINAPI IWineD3DVertexBufferImpl_Unlock(IWineD3DVertexBuffer *iface) {
 750     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *) iface;
 751     LONG lockcount;
 752     TRACE("(%p)\n", This);
 753
 754     lockcount = InterlockedDecrement(&This->lockcount);
 755     if(lockcount > 0) {
 756         /* Delay loading the buffer until everything is unlocked */
 757         TRACE("Ignoring the unlock\n");
 758         return WINED3D_OK;
 759     }
 760
 761     if(This->Flags & VBFLAG_HASDESC) {
 762         IWineD3DVertexBufferImpl_PreLoad(iface);
 763     }
 764     return WINED3D_OK;
 765 }
 766 static HRESULT  WINAPI IWineD3DVertexBufferImpl_GetDesc(IWineD3DVertexBuffer *iface, WINED3DVERTEXBUFFER_DESC *pDesc) {
 767     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
 768
 769     TRACE("(%p)\n", This);
 770     pDesc->Format = This->resource.format;
 771     pDesc->Type   = This->resource.resourceType;
 772     pDesc->Usage  = This->resource.usage;
 773     pDesc->Pool   = This->resource.pool;
 774     pDesc->Size   = This->resource.size;
 775     pDesc->FVF    = This->fvf;
 776     return WINED3D_OK;
 777 }
 778
 779 const IWineD3DVertexBufferVtbl IWineD3DVertexBuffer_Vtbl =
 780 {
 781     /* IUnknown */
 782     IWineD3DVertexBufferImpl_QueryInterface,
 783     IWineD3DVertexBufferImpl_AddRef,
 784     IWineD3DVertexBufferImpl_Release,
 785     /* IWineD3DResource */
 786     IWineD3DVertexBufferImpl_GetParent,
 787     IWineD3DVertexBufferImpl_GetDevice,
 788     IWineD3DVertexBufferImpl_SetPrivateData,
 789     IWineD3DVertexBufferImpl_GetPrivateData,
 790     IWineD3DVertexBufferImpl_FreePrivateData,
 791     IWineD3DVertexBufferImpl_SetPriority,
 792     IWineD3DVertexBufferImpl_GetPriority,
 793     IWineD3DVertexBufferImpl_PreLoad,
 794     IWineD3DVertexBufferImpl_UnLoad,
 795     IWineD3DVertexBufferImpl_GetType,
 796     /* IWineD3DVertexBuffer */
 797     IWineD3DVertexBufferImpl_Lock,
 798     IWineD3DVertexBufferImpl_Unlock,
 799     IWineD3DVertexBufferImpl_GetDesc
 800 };
 801
 802 const BYTE* IWineD3DVertexBufferImpl_GetMemory(IWineD3DVertexBuffer* iface, DWORD iOffset, GLint *vbo)
 803 {
 804     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
 805
 806     *vbo = This->vbo;
 807     if(This->vbo == 0) {
 808         if(This->Flags & VBFLAG_CREATEVBO) {
 809             CreateVBO(This);
 810             This->Flags &= ~VBFLAG_CREATEVBO;
 811             if(This->vbo) {
 812                 *vbo = This->vbo;
 813                 return (const BYTE *)iOffset;
 814             }
 815         }
 816         return This->resource.allocatedMemory + iOffset;
 817     } else {
 818         return (const BYTE *)iOffset;
 819     }
 820 }