reactos/dll/directx/wine/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)) {
 331         TRACE("vhsader\n");
 332         /* If the current vertex declaration is marked for no half float conversion don't bother to
 333          * analyse the strided streams in depth, just set them up for no conversion. Return decl changed
 334          * if we used conversion before
 335          */
 336         if(!((IWineD3DVertexDeclarationImpl *) device->stateBlock->vertexDecl)->half_float_conv_needed) {
 337             if(This->conv_map) {
 338                 TRACE("Now using shaders without conversion, but conversion used before\n");
 339                 HeapFree(GetProcessHeap(), 0, This->conv_map);
 340                 HeapFree(GetProcessHeap(), 0, This->conv_shift);
 341                 This->conv_map = NULL;
 342                 This->stride = 0;
 343                 This->conv_shift = NULL;
 344                 This->conv_stride = 0;
 345                 return TRUE;
 346             } else {
 347                 return FALSE;
 348             }
 349         }
 350         for(i = 0; i < MAX_ATTRIBS; i++) {
 351             ret = check_attribute(This, &device->strided_streams.u.input[i], FALSE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 352         }
 353
 354         /* Recalculate the conversion shift map if the declaration has changed,
 355          * and we're using float16 conversion or used it on the last run
 356          */
 357         if(ret && (float16_used || This->conv_map)) {
 358             HeapFree(GetProcessHeap(), 0, This->conv_shift);
 359             This->conv_shift = find_conversion_shift(This, &device->strided_streams, This->stride);
 360         }
 361     } else {
 362         /* Fixed function is a bit trickier. We have to take care for D3DCOLOR types, FLOAT4 positions and of course
 363          * FLOAT16s if not supported. Also, we can't iterate over the array, so use macros to generate code for all
 364          * the attributes that our current fixed function pipeline implementation cares for.
 365          */
 366         ret = check_attribute(This, &device->strided_streams.u.s.position,     TRUE, TRUE,  FALSE, &stride_this_run, &float16_used) || ret;
 367         ret = check_attribute(This, &device->strided_streams.u.s.normal,       TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 368         ret = check_attribute(This, &device->strided_streams.u.s.diffuse,      TRUE, FALSE, TRUE,  &stride_this_run, &float16_used) || ret;
 369         ret = check_attribute(This, &device->strided_streams.u.s.specular,     TRUE, FALSE, TRUE,  &stride_this_run, &float16_used) || ret;
 370         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[0], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 371         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[1], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 372         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[2], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 373         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[3], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 374         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[4], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 375         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[5], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 376         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[6], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 377         ret = check_attribute(This, &device->strided_streams.u.s.texCoords[7], TRUE, FALSE, FALSE, &stride_this_run, &float16_used) || ret;
 378
 379         if(float16_used) FIXME("Float16 conversion used with fixed function vertex processing\n");
 380     }
 381
 382     if(stride_this_run == 0 && This->conv_map) {
 383         /* Sanity test */
 384         if(ret == FALSE) {
 385             ERR("no converted attributes found, old conversion map exists, and no declaration change???\n");
 386         }
 387         HeapFree(GetProcessHeap(), 0, This->conv_map);
 388         This->conv_map = NULL;
 389         This->stride = 0;
 390     }
 391     This->Flags |= VBFLAG_HASDESC;
 392
 393     if(ret) TRACE("Conversion information changed\n");
 394     return ret;
 395 }
 396
 397 static void check_vbo_size(IWineD3DVertexBufferImpl *This) {
 398     DWORD size = This->conv_stride ? This->conv_stride * (This->resource.size / This->stride) : This->resource.size;
 399     if(This->vbo_size != size) {
 400         TRACE("Old size %d, creating new size %d\n", This->vbo_size, size);
 401         ENTER_GL();
 402         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 403         checkGLcall("glBindBufferARB");
 404         GL_EXTCALL(glBufferDataARB(GL_ARRAY_BUFFER_ARB, size, NULL, This->vbo_usage));
 405         This->vbo_size = size;
 406         checkGLcall("glBufferDataARB");
 407         LEAVE_GL();
 408     }
 409 }
 410
 411 static void CreateVBO(IWineD3DVertexBufferImpl *This) {
 412     GLenum error, glUsage;
 413     DWORD vboUsage = This->resource.usage;
 414     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 415
 416     TRACE("Creating an OpenGL vertex buffer object for IWineD3DVertexBuffer %p  Usage(%s)\n", This, debug_d3dusage(vboUsage));
 417
 418     /* Make sure that a context is there. Needed in a multithreaded environment. Otherwise this call is a nop */
 419     ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 420     ENTER_GL();
 421
 422     /* Make sure that the gl error is cleared. Do not use checkGLcall
 423     * here because checkGLcall just prints a fixme and continues. However,
 424     * if an error during VBO creation occurs we can fall back to non-vbo operation
 425     * with full functionality(but performance loss)
 426     */
 427     while(glGetError() != GL_NO_ERROR);
 428
 429     /* Basically the FVF parameter passed to CreateVertexBuffer is no good
 430     * It is the FVF set with IWineD3DDevice::SetFVF or the Vertex Declaration set with
 431     * IWineD3DDevice::SetVertexDeclaration that decides how the vertices in the buffer
 432     * look like. This means that on each DrawPrimitive call the vertex buffer has to be verified
 433     * to check if the rhw and color values are in the correct format.
 434     */
 435
 436     GL_EXTCALL(glGenBuffersARB(1, &This->vbo));
 437     error = glGetError();
 438     if(This->vbo == 0 || error != GL_NO_ERROR) {
 439         WARN("Failed to create a VBO with error %s (%#x)\n", debug_glerror(error), error);
 440         goto error;
 441     }
 442
 443     GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 444     error = glGetError();
 445     if(error != GL_NO_ERROR) {
 446         WARN("Failed to bind the VBO with error %s (%#x)\n", debug_glerror(error), error);
 447         goto error;
 448     }
 449
 450     /* Don't use static, because dx apps tend to update the buffer
 451     * quite often even if they specify 0 usage. Because we always keep the local copy
 452     * we never read from the vbo and can create a write only opengl buffer.
 453     */
 454     switch(vboUsage & (WINED3DUSAGE_WRITEONLY | WINED3DUSAGE_DYNAMIC) ) {
 455         case WINED3DUSAGE_WRITEONLY | WINED3DUSAGE_DYNAMIC:
 456         case WINED3DUSAGE_DYNAMIC:
 457             TRACE("Gl usage = GL_STREAM_DRAW\n");
 458             glUsage = GL_STREAM_DRAW_ARB;
 459             break;
 460         case WINED3DUSAGE_WRITEONLY:
 461         default:
 462             TRACE("Gl usage = GL_DYNAMIC_DRAW\n");
 463             glUsage = GL_DYNAMIC_DRAW_ARB;
 464             break;
 465     }
 466
 467     /* Reserve memory for the buffer. The amount of data won't change
 468     * so we are safe with calling glBufferData once with a NULL ptr and
 469     * calling glBufferSubData on updates
 470     */
 471     GL_EXTCALL(glBufferDataARB(GL_ARRAY_BUFFER_ARB, This->resource.size, NULL, glUsage));
 472     error = glGetError();
 473     if(error != GL_NO_ERROR) {
 474         WARN("glBufferDataARB failed with error %s (%#x)\n", debug_glerror(error), error);
 475         goto error;
 476     }
 477     This->vbo_size = This->resource.size;
 478     This->vbo_usage = glUsage;
 479     This->dirtystart = 0;
 480     This->dirtyend = This->resource.size;
 481     This->Flags |= VBFLAG_DIRTY;
 482
 483     LEAVE_GL();
 484
 485     return;
 486     error:
 487             /* Clean up all vbo init, but continue because we can work without a vbo :-) */
 488             FIXME("Failed to create a vertex buffer object. Continuing, but performance issues can occur\n");
 489     if(This->vbo) GL_EXTCALL(glDeleteBuffersARB(1, &This->vbo));
 490     This->vbo = 0;
 491     LEAVE_GL();
 492     return;
 493 }
 494
 495 static void     WINAPI IWineD3DVertexBufferImpl_PreLoad(IWineD3DVertexBuffer *iface) {
 496     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *) iface;
 497     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 498     BYTE *data;
 499     UINT start = 0, end = 0, vertices;
 500     BOOL declChanged = FALSE;
 501     int i, j;
 502     TRACE("(%p)->()\n", This);
 503
 504     if(!This->vbo) {
 505         /* TODO: Make converting independent from VBOs */
 506         if(This->Flags & VBFLAG_CREATEVBO) {
 507             CreateVBO(This);
 508             This->Flags &= ~VBFLAG_CREATEVBO;
 509         } else {
 510             return; /* Not doing any conversion */
 511         }
 512     }
 513
 514     /* Reading the declaration makes only sense if the stateblock is finalized and the buffer bound to a stream */
 515     if(device->isInDraw && This->bindCount > 0) {
 516         declChanged = IWineD3DVertexBufferImpl_FindDecl(This);
 517     } else if(This->Flags & VBFLAG_HASDESC) {
 518         /* Reuse the declaration stored in the buffer. It will most likely not change, and if it does
 519          * the stream source state handler will call PreLoad again and the change will be caught
 520          */
 521     } else {
 522         /* Cannot get a declaration, and no declaration is stored in the buffer. It is pointless to preload
 523          * now. When the buffer is used, PreLoad will be called by the stream source state handler and a valid
 524          * declaration for the buffer can be found
 525          */
 526         return;
 527     }
 528
 529     /* If applications change the declaration over and over, reconverting all the time is a huge
 530      * performance hit. So count the declaration changes and release the VBO if there are too many
 531      * of them (and thus stop converting)
 532      */
 533     if(declChanged) {
 534         This->declChanges++;
 535         This->draws = 0;
 536
 537         if(This->declChanges > VB_MAXDECLCHANGES) {
 538             FIXME("Too many declaration changes, stopping converting\n");
 539             ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 540             ENTER_GL();
 541             GL_EXTCALL(glDeleteBuffersARB(1, &This->vbo));
 542             checkGLcall("glDeleteBuffersARB");
 543             LEAVE_GL();
 544             This->vbo = 0;
 545             HeapFree(GetProcessHeap(), 0, This->conv_shift);
 546
 547             /* The stream source state handler might have read the memory of the vertex buffer already
 548              * and got the memory in the vbo which is not valid any longer. Dirtify the stream source
 549              * to force a reload. This happens only once per changed vertexbuffer and should occur rather
 550              * rarely
 551              */
 552             IWineD3DDeviceImpl_MarkStateDirty(device, STATE_STREAMSRC);
 553
 554             return;
 555         }
 556         check_vbo_size(This);
 557     } else {
 558         /* However, it is perfectly fine to change the declaration every now and then. We don't want a game that
 559          * changes it every minute drop the VBO after VB_MAX_DECL_CHANGES minutes. So count draws without
 560          * decl changes and reset the decl change count after a specific number of them
 561          */
 562         This->draws++;
 563         if(This->draws > VB_RESETDECLCHANGE) This->declChanges = 0;
 564     }
 565
 566     if(declChanged) {
 567         /* The declaration changed, reload the whole buffer */
 568         WARN("Reloading buffer because of decl change\n");
 569         start = 0;
 570         end = This->resource.size;
 571     } else if(This->Flags & VBFLAG_DIRTY) {
 572         /* No decl change, but dirty data, reload the changed stuff */
 573         if(This->conv_shift) {
 574             if(This->dirtystart != 0 || This->dirtyend != 0) {
 575                 FIXME("Implement partial buffer loading with shifted conversion\n");
 576             }
 577         }
 578         start = This->dirtystart;
 579         end = This->dirtyend;
 580     } else {
 581         /* Desc not changed, buffer not dirty, nothing to do :-) */
 582         return;
 583     }
 584
 585     /* Mark the buffer clean */
 586     This->Flags &= ~VBFLAG_DIRTY;
 587     This->dirtystart = 0;
 588     This->dirtyend = 0;
 589
 590     if(!This->conv_map) {
 591         /* That means that there is nothing to fixup. Just upload from This->resource.allocatedMemory
 592          * directly into the vbo. Do not free the system memory copy because drawPrimitive may need it if
 593          * the stride is 0, for instancing emulation, vertex blending emulation or shader emulation.
 594          */
 595         TRACE("No conversion needed\n");
 596
 597         if(!device->isInDraw) {
 598             ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 599         }
 600         ENTER_GL();
 601         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 602         checkGLcall("glBindBufferARB");
 603         GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, start, end-start, This->resource.allocatedMemory + start));
 604         checkGLcall("glBufferSubDataARB");
 605         LEAVE_GL();
 606         return;
 607     }
 608
 609     /* Now for each vertex in the buffer that needs conversion */
 610     vertices = This->resource.size / This->stride;
 611
 612     if(This->conv_shift) {
 613         TRACE("Shifted conversion\n");
 614         data = HeapAlloc(GetProcessHeap(), 0, vertices * This->conv_stride);
 615
 616         for(i = start / This->stride; i < min((end / This->stride) + 1, vertices); i++) {
 617             for(j = 0; j < This->stride; j++) {
 618                 switch(This->conv_map[j]) {
 619                     case CONV_NONE:
 620                         data[This->conv_stride * i + j + This->conv_shift[j]] = This->resource.allocatedMemory[This->stride * i + j];
 621                         break;
 622
 623                     case CONV_FLOAT16_2:
 624                     {
 625                         float *out = (float *) (&data[This->conv_stride * i + j + This->conv_shift[j]]);
 626                         const WORD *in = (WORD *) (&This->resource.allocatedMemory[i * This->stride + j]);
 627
 628                         out[1] = float_16_to_32(in + 1);
 629                         out[0] = float_16_to_32(in + 0);
 630                         j += 3;    /* Skip 3 additional bytes,as a FLOAT16_2 has 4 bytes */
 631                         break;
 632                     }
 633
 634                     default:
 635                         FIXME("Unimplemented conversion %d in shifted conversion\n", This->conv_map[j]);
 636                 }
 637             }
 638         }
 639
 640         ENTER_GL();
 641         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 642         checkGLcall("glBindBufferARB");
 643         GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, vertices * This->conv_stride, data));
 644         checkGLcall("glBufferSubDataARB");
 645         LEAVE_GL();
 646
 647     } else {
 648         data = HeapAlloc(GetProcessHeap(), 0, This->resource.size);
 649         memcpy(data + start, This->resource.allocatedMemory + start, end - start);
 650         for(i = start / This->stride; i < min((end / This->stride) + 1, vertices); i++) {
 651             for(j = 0; j < This->stride; j++) {
 652                 switch(This->conv_map[j]) {
 653                     case CONV_NONE:
 654                         /* Done already */
 655                         j += 3;
 656                         break;
 657                     case CONV_D3DCOLOR:
 658                         fixup_d3dcolor((DWORD *) (data + i * This->stride + j));
 659                         j += 3;
 660                         break;
 661
 662                     case CONV_POSITIONT:
 663                         fixup_transformed_pos((float *) (data + i * This->stride + j));
 664                         j += 15;
 665                         break;
 666
 667                     case CONV_FLOAT16_2:
 668                         ERR("Did not expect FLOAT16 conversion in unshifted conversion\n");
 669                     default:
 670                         FIXME("Unimplemented conversion %d in shifted conversion\n", This->conv_map[j]);
 671                 }
 672             }
 673         }
 674
 675         ENTER_GL();
 676         GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
 677         checkGLcall("glBindBufferARB");
 678         GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, start, end - start, data + start));
 679         checkGLcall("glBufferSubDataARB");
 680         LEAVE_GL();
 681     }
 682
 683     HeapFree(GetProcessHeap(), 0, data);
 684 }
 685
 686 static void WINAPI IWineD3DVertexBufferImpl_UnLoad(IWineD3DVertexBuffer *iface) {
 687     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *) iface;
 688     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 689     TRACE("(%p)\n", This);
 690
 691     /* This is easy: The whole content is shadowed in This->resource.allocatedMemory,
 692      * so we only have to destroy the vbo. Only do it if we have a vbo, which implies
 693      * that vbos are supported
 694      */
 695     if(This->vbo) {
 696         ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
 697         ENTER_GL();
 698         GL_EXTCALL(glDeleteBuffersARB(1, &This->vbo));
 699         checkGLcall("glDeleteBuffersARB");
 700         LEAVE_GL();
 701         This->vbo = 0;
 702         This->Flags |= VBFLAG_CREATEVBO; /* Recreate the VBO next load */
 703     }
 704 }
 705
 706 static WINED3DRESOURCETYPE WINAPI IWineD3DVertexBufferImpl_GetType(IWineD3DVertexBuffer *iface) {
 707     return resource_get_type((IWineD3DResource *)iface);
 708 }
 709
 710 static HRESULT WINAPI IWineD3DVertexBufferImpl_GetParent(IWineD3DVertexBuffer *iface, IUnknown **pParent) {
 711     return resource_get_parent((IWineD3DResource *)iface, pParent);
 712 }
 713
 714 /* ******************************************************
 715    IWineD3DVertexBuffer IWineD3DVertexBuffer parts follow
 716    ****************************************************** */
 717 static HRESULT  WINAPI IWineD3DVertexBufferImpl_Lock(IWineD3DVertexBuffer *iface, UINT OffsetToLock, UINT SizeToLock, BYTE** ppbData, DWORD Flags) {
 718     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
 719     BYTE *data;
 720     TRACE("(%p)->%d, %d, %p, %08x\n", This, OffsetToLock, SizeToLock, ppbData, Flags);
 721
 722     InterlockedIncrement(&This->lockcount);
 723
 724     if(This->Flags & VBFLAG_DIRTY) {
 725         if(This->dirtystart > OffsetToLock) This->dirtystart = OffsetToLock;
 726         if(SizeToLock) {
 727             if(This->dirtyend < OffsetToLock + SizeToLock) This->dirtyend = OffsetToLock + SizeToLock;
 728         } else {
 729             This->dirtyend = This->resource.size;
 730         }
 731     } else {
 732         This->dirtystart = OffsetToLock;
 733         if(SizeToLock)
 734             This->dirtyend = OffsetToLock + SizeToLock;
 735         else
 736             This->dirtyend = This->resource.size;
 737     }
 738
 739     data = This->resource.allocatedMemory;
 740     This->Flags |= VBFLAG_DIRTY;
 741     *ppbData = data + OffsetToLock;
 742
 743     TRACE("(%p) : returning memory of %p (base:%p,offset:%u)\n", This, data + OffsetToLock, data, OffsetToLock);
 744     /* TODO: check Flags compatibility with This->currentDesc.Usage (see MSDN) */
 745     return WINED3D_OK;
 746 }
 747 static HRESULT WINAPI IWineD3DVertexBufferImpl_Unlock(IWineD3DVertexBuffer *iface) {
 748     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *) iface;
 749     LONG lockcount;
 750     TRACE("(%p)\n", This);
 751
 752     lockcount = InterlockedDecrement(&This->lockcount);
 753     if(lockcount > 0) {
 754         /* Delay loading the buffer until everything is unlocked */
 755         TRACE("Ignoring the unlock\n");
 756         return WINED3D_OK;
 757     }
 758
 759     if(This->Flags & VBFLAG_HASDESC) {
 760         IWineD3DVertexBufferImpl_PreLoad(iface);
 761     }
 762     return WINED3D_OK;
 763 }
 764 static HRESULT  WINAPI IWineD3DVertexBufferImpl_GetDesc(IWineD3DVertexBuffer *iface, WINED3DVERTEXBUFFER_DESC *pDesc) {
 765     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
 766
 767     TRACE("(%p)\n", This);
 768     pDesc->Format = This->resource.format;
 769     pDesc->Type   = This->resource.resourceType;
 770     pDesc->Usage  = This->resource.usage;
 771     pDesc->Pool   = This->resource.pool;
 772     pDesc->Size   = This->resource.size;
 773     pDesc->FVF    = This->fvf;
 774     return WINED3D_OK;
 775 }
 776
 777 const IWineD3DVertexBufferVtbl IWineD3DVertexBuffer_Vtbl =
 778 {
 779     /* IUnknown */
 780     IWineD3DVertexBufferImpl_QueryInterface,
 781     IWineD3DVertexBufferImpl_AddRef,
 782     IWineD3DVertexBufferImpl_Release,
 783     /* IWineD3DResource */
 784     IWineD3DVertexBufferImpl_GetParent,
 785     IWineD3DVertexBufferImpl_GetDevice,
 786     IWineD3DVertexBufferImpl_SetPrivateData,
 787     IWineD3DVertexBufferImpl_GetPrivateData,
 788     IWineD3DVertexBufferImpl_FreePrivateData,
 789     IWineD3DVertexBufferImpl_SetPriority,
 790     IWineD3DVertexBufferImpl_GetPriority,
 791     IWineD3DVertexBufferImpl_PreLoad,
 792     IWineD3DVertexBufferImpl_UnLoad,
 793     IWineD3DVertexBufferImpl_GetType,
 794     /* IWineD3DVertexBuffer */
 795     IWineD3DVertexBufferImpl_Lock,
 796     IWineD3DVertexBufferImpl_Unlock,
 797     IWineD3DVertexBufferImpl_GetDesc
 798 };
 799
 800 const BYTE* IWineD3DVertexBufferImpl_GetMemory(IWineD3DVertexBuffer* iface, DWORD iOffset, GLint *vbo)
 801 {
 802     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *)iface;
 803
 804     *vbo = This->vbo;
 805     if(This->vbo == 0) {
 806         if(This->Flags & VBFLAG_CREATEVBO) {
 807             CreateVBO(This);
 808             This->Flags &= ~VBFLAG_CREATEVBO;
 809             if(This->vbo) {
 810                 *vbo = This->vbo;
 811                 return (const BYTE *)iOffset;
 812             }
 813         }
 814         return This->resource.allocatedMemory + iOffset;
 815     } else {
 816         return (const BYTE *)iOffset;
 817     }
 818 }