wined3d: Implement half float vertex buffer conversion.

dlls/wined3d/device.c

@@ -277,6 +277,8 @@ static void CreateVBO(IWineD3DVertexBufferImpl *object) {
         WARN("glBufferDataARB failed with error %s (%#x)\n", debug_glerror(error), error);
         goto error;
     }
+    object->vbo_size = object->resource.size;
+    object->vbo_usage = glUsage;
 
     LEAVE_GL();
 

dlls/wined3d/drawprim.c

@@ -201,10 +201,6 @@ void primitiveDeclarationConvertToStridedData(
                 if((UINT_PTR)data < -This->stateBlock->loadBaseVertexIndex * stride) {
                     FIXME("System memory vertex data load offset is negative!\n");
                 }
-            } else if(vertexDeclaration->half_float_conv_needed) {
-                WARN("Half float vertex data used, but GL_NV_half_float is not supported. Not using vbos\n");
-                streamVBO = 0;
-                data = ((IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[element->Stream])->resource.allocatedMemory;
             }
 
             if(fixup) {
@@ -574,24 +570,6 @@ static void drawStridedSlow(IWineD3DDevice *iface, WineDirect3DVertexStridedData
     checkGLcall("glEnd and previous calls");
 }
 
-/* See GL_NV_half_float for reference */
-static inline float float_16_to_32(const unsigned short *in) {
-    const unsigned short s = ((*in) & 0x8000);
-    const unsigned short e = ((*in) & 0x7C00) >> 10;
-    const unsigned short m = (*in) & 0x3FF;
-    const float sgn = (s ? -1.0 : 1.0);
-
-    if(e == 0) {
-        if(m == 0) return sgn * 0.0; /* +0.0 or -0.0 */
-        else return sgn * pow(2, -14.0) * ( (float) m / 1024.0);
-    } else if(e < 31) {
-        return sgn * pow(2, (float) e-15.0) * (1.0 + ((float) m / 1024.0));
-    } else {
-        if(m == 0) return sgn / 0.0; /* +INF / -INF */
-        else return 0.0 / 0.0; /* NAN */
-    }
-}
-
 static inline void send_attribute(IWineD3DDeviceImpl *This, const DWORD type, const UINT index, const void *ptr) {
     switch(type) {
         case WINED3DDECLTYPE_FLOAT1:
@@ -1103,19 +1081,21 @@ void drawPrimitive(IWineD3DDevice *iface,
 
         if (This->useDrawStridedSlow || emulation) {
             /* Immediate mode drawing */
-            drawStridedSlow(iface, strided, calculatedNumberOfindices,
+            if(use_vs(This)) {
-                            glPrimType, idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
+                FIXME("Using immediate mode with vertex shaders for half float emulation\n");
+                drawStridedSlowVs(iface, strided, calculatedNumberOfindices, glPrimType,
+                                  idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
+            } else {
+                drawStridedSlow(iface, strided, calculatedNumberOfindices,
+                                glPrimType, idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
+            }
         } else if(This->instancedDraw) {
             /* Instancing emulation with mixing immediate mode and arrays */
             drawStridedInstanced(iface, &This->strided_streams, calculatedNumberOfindices, glPrimType,
                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
-        } else if(!((IWineD3DVertexDeclarationImpl *) This->stateBlock->vertexDecl)->half_float_conv_needed) {
+        } else {
             drawStridedFast(iface, calculatedNumberOfindices, glPrimType,
                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
-        } else {
-            FIXME("Using immediate mode with vertex shaders for half float emulation\n");
-            drawStridedSlowVs(iface, strided, calculatedNumberOfindices, glPrimType,
-                              idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
         }
     }
 

dlls/wined3d/state.c

@@ -2880,15 +2880,11 @@ static inline void loadNumberedArrays(IWineD3DStateBlockImpl *stateblock, WineDi
     GLint curVBO = GL_SUPPORT(ARB_VERTEX_BUFFER_OBJECT) ? -1 : 0;
     int i;
     UINT *offset = stateblock->streamOffset;
+    IWineD3DVertexBufferImpl *vb;
 
     /* Default to no instancing */
     stateblock->wineD3DDevice->instancedDraw = FALSE;
 
-    if(((IWineD3DVertexDeclarationImpl *)stateblock->vertexDecl)->half_float_conv_needed) {
-        /* This will be handled using drawStridedSlow */
-        return;
-    }
-
     for (i = 0; i < MAX_ATTRIBS; i++) {
 
         if (!strided->u.input[i].lpData && !strided->u.input[i].VBO)
@@ -2909,12 +2905,37 @@ static inline void loadNumberedArrays(IWineD3DStateBlockImpl *stateblock, WineDi
                 checkGLcall("glBindBufferARB");
                 curVBO = strided->u.input[i].VBO;
             }
-            GL_EXTCALL(glVertexAttribPointerARB(i,
+            vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[strided->u.input[i].streamNo];
-                            WINED3D_ATR_SIZE(strided->u.input[i].dwType),
+            /* Use the VBO to find out if a vertex buffer exists, not the vb pointer. vb can point to a
-                            WINED3D_ATR_GLTYPE(strided->u.input[i].dwType),
+             * user pointer data blob. In that case curVBO will be 0. If there is a vertex buffer but no
-                            WINED3D_ATR_NORMALIZED(strided->u.input[i].dwType),
+             * vbo we won't be load converted attributes anyway
-                            strided->u.input[i].dwStride,
+             */
-                            strided->u.input[i].lpData + stateblock->loadBaseVertexIndex * strided->u.input[i].dwStride + offset[strided->u.input[i].streamNo]) );
+            if(curVBO && vb->conv_shift) {
+                TRACE("Loading attribute from shifted buffer\n");
+                TRACE("Attrib %d has original stride %d, new stride %d\n", i, strided->u.input[i].dwStride, vb->conv_stride);
+                TRACE("Original offset %p, additional offset 0x%08x\n",strided->u.input[i].lpData, vb->conv_shift[(DWORD_PTR) strided->u.input[i].lpData]);
+                TRACE("Opengl type %x\n", WINED3D_ATR_GLTYPE(strided->u.input[i].dwType));
+                GL_EXTCALL(glVertexAttribPointerARB(i,
+                                WINED3D_ATR_SIZE(strided->u.input[i].dwType),
+                                WINED3D_ATR_GLTYPE(strided->u.input[i].dwType),
+                                WINED3D_ATR_NORMALIZED(strided->u.input[i].dwType),
+                                vb->conv_stride,
+
+                                strided->u.input[i].lpData + vb->conv_shift[(DWORD_PTR) strided->u.input[i].lpData] +
+                                stateblock->loadBaseVertexIndex * strided->u.input[i].dwStride +
+                                offset[strided->u.input[i].streamNo]));
+
+            } else {
+                GL_EXTCALL(glVertexAttribPointerARB(i,
+                                WINED3D_ATR_SIZE(strided->u.input[i].dwType),
+                                WINED3D_ATR_GLTYPE(strided->u.input[i].dwType),
+                                WINED3D_ATR_NORMALIZED(strided->u.input[i].dwType),
+                                strided->u.input[i].dwStride,
+
+                                strided->u.input[i].lpData +
+                                stateblock->loadBaseVertexIndex * strided->u.input[i].dwStride +
+                                offset[strided->u.input[i].streamNo]) );
+                }
             GL_EXTCALL(glEnableVertexAttribArrayARB(i));
         } else {
             /* Stride = 0 means always the same values. glVertexAttribPointerARB doesn't do that. Instead disable the pointer and
@@ -2922,7 +2943,7 @@ static inline void loadNumberedArrays(IWineD3DStateBlockImpl *stateblock, WineDi
              */
             BYTE *ptr = strided->u.input[i].lpData + offset[strided->u.input[i].streamNo];
             if(strided->u.input[i].VBO) {
-                IWineD3DVertexBufferImpl *vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[strided->u.input[i].streamNo];
+                vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[strided->u.input[i].streamNo];
                 ptr += (long) vb->resource.allocatedMemory;
             }
             GL_EXTCALL(glDisableVertexAttribArrayARB(i));
@@ -3360,10 +3381,16 @@ static inline void handleStreams(IWineD3DStateBlockImpl *stateblock, BOOL useVer
     }
 
     if(useVertexShaderFunction) {
-        TRACE("Loading numbered arrays\n");
+        if(((IWineD3DVertexDeclarationImpl *) stateblock->vertexDecl)->half_float_conv_needed && !fixup) {
-        loadNumberedArrays(stateblock, dataLocations);
+            TRACE("Using drawStridedSlow with vertex shaders for FLOAT16 conversion\n");
-        device->useDrawStridedSlow = FALSE;
+            device->useDrawStridedSlow = TRUE;
-        context->numberedArraysLoaded = TRUE;
+            context->numberedArraysLoaded = FALSE;
+        } else {
+            TRACE("Loading numbered arrays\n");
+            loadNumberedArrays(stateblock, dataLocations);
+            device->useDrawStridedSlow = FALSE;
+            context->numberedArraysLoaded = TRUE;
+        }
     } else if (fixup ||
                (dataLocations->u.s.pSize.lpData == NULL &&
                 dataLocations->u.s.diffuse.lpData == NULL &&

dlls/wined3d/vertexbuffer.c

@@ -142,12 +142,53 @@ static inline void fixup_transformed_pos(float *p) {
     p[3] = w;
 }
 
+DWORD *find_conversion_shift(IWineD3DVertexBufferImpl *This, WineDirect3DVertexStridedData *strided, DWORD stride) {
+    DWORD *ret, i, shift, j, type;
+    DWORD orig_type_size;
+
+    if(!stride) {
+        TRACE("No shift\n");
+        return NULL;
+    }
+
+    This->conv_stride = stride;
+    ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DWORD) * stride);
+    for(i = 0; i < MAX_ATTRIBS; i++) {
+        type = strided->u.input[i].dwType;
+        if(type == WINED3DDECLTYPE_FLOAT16_2) {
+            shift = 4;
+        } else if(type == WINED3DDECLTYPE_FLOAT16_4) {
+            shift = 8;
+        } else {
+            shift = 0;
+        }
+        This->conv_stride += shift;
+
+        if(shift) {
+            orig_type_size = WINED3D_ATR_TYPESIZE(type) * WINED3D_ATR_SIZE(type);
+            for(j = (DWORD_PTR) strided->u.input[i].lpData + orig_type_size; j < stride; j++) {
+                ret[j] += shift;
+            }
+        }
+    }
+
+    if(TRACE_ON(d3d)) {
+        TRACE("Dumping conversion shift:\n");
+        for(i = 0; i < stride; i++) {
+            TRACE("[%d]", ret[i]);
+        }
+        TRACE("\n");
+    }
+    return ret;
+}
+
 inline BOOL WINAPI IWineD3DVertexBufferImpl_FindDecl(IWineD3DVertexBufferImpl *This)
 {
     WineDirect3DVertexStridedData strided;
     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
     BOOL ret = FALSE;
-    DWORD type_old, type_new;
+    DWORD type_old, type_new, stride;
+    int i;
 
     /* In d3d7 the vertex buffer declaration NEVER changes because it is stored in the d3d7 vertex buffer.
      * Once we have our declaration there is no need to look it up again.
@@ -180,8 +221,6 @@ inline BOOL WINAPI IWineD3DVertexBufferImpl_FindDecl(IWineD3DVertexBufferImpl *T
      */
 
     if (use_vs(device)) {
-        /* Assume no conversion. TODO: Deal with FLOAT16 conversion*/
-        memset(&strided, 0, sizeof(strided));
         if(!This->last_was_vshader && This->last_was_converted) {
             /* Reload if we're switching from converted fixed function to vertex shaders.
              * This isn't strictly needed, e.g. a FLOAT16 attribute could stay at the same
@@ -192,7 +231,69 @@ inline BOOL WINAPI IWineD3DVertexBufferImpl_FindDecl(IWineD3DVertexBufferImpl *T
             ret = TRUE;
         }
         This->last_was_vshader = TRUE;
+
+        /* The vertex declaration is so nice to carry a flag for this. It takes the gl info into account,
+         * but check that separately to avoid the memcmp over the structure
+         */
+        if(GL_SUPPORT(NV_HALF_FLOAT)) {
+            memset(&strided, 0, sizeof(strided));
+            ret = FALSE;
+        } else if(((IWineD3DVertexDeclarationImpl *)device->stateBlock->vertexDecl)->half_float_conv_needed) {
+            memcpy(&strided, &device->strided_streams, sizeof(strided));
+
+            stride = 0;
+            for(i = 0; i < MAX_ATTRIBS; i++) {
+                if(strided.u.input[i].VBO != This->vbo) {
+                    /* Ignore attributes from a different vbo */
+                    memset(&strided.u.input[i], 0, sizeof(strided.u.input[i]));
+                    continue;
+                };
+
+                type_old = This->strided.u.input[i].dwType;
+                type_new = strided.u.input[i].dwType;
+                if(type_old != type_new) {
+                    if(type_old == WINED3DDECLTYPE_FLOAT16_2 || type_new == WINED3DDECLTYPE_FLOAT16_2 ||
+                       type_old == WINED3DDECLTYPE_FLOAT16_4 || type_new == WINED3DDECLTYPE_FLOAT16_4) {
+                        TRACE("Reloading because attribute %i was %s before and is %s now\n", i,
+                              debug_d3ddecltype(type_old), debug_d3ddecltype(type_new));
+                        stride = strided.u.input[i].dwStride;
+                        ret = TRUE;
+                    }
+                } else if(type_new == WINED3DDECLTYPE_FLOAT16_2 || type_new == WINED3DDECLTYPE_FLOAT16_4) {
+                    if(This->strided.u.input[i].lpData != strided.u.input[i].lpData) {
+                        TRACE("Reconverting buffer because attribute %d has type %s and moved from offset %p to %p\n",
+                              i, debug_d3ddecltype(type_new), This->strided.u.s.position.lpData, strided.u.s.position.lpData);
+                        memcpy(&This->strided, &strided, sizeof(strided));
+                        ret = TRUE;
+                        stride = strided.u.input[i].dwStride;
+                    }
+                }
+
+                if(!(type_new == WINED3DDECLTYPE_FLOAT16_2 || type_new == WINED3DDECLTYPE_FLOAT16_4)) {
+                    /* Nuke unconverted attributes */
+                    memset(&strided.u.input[i], 0, sizeof(strided.u.input[i]));
+                }
+            }
+            if(ret) {
+                memcpy(&This->strided, &strided, sizeof(strided));
+                HeapFree(GetProcessHeap(), 0, This->conv_shift);
+                This->conv_shift = find_conversion_shift(This, &This->strided, stride);
+            }
+        } else {
+            /* No conversion*/
+            memset(&strided, 0, sizeof(strided));
+            ret = (memcmp(&strided, &This->strided, sizeof(strided)) != 0);
+            if(ret) {
+                HeapFree(GetProcessHeap(), 0, This->conv_shift);
+                This->conv_shift = NULL;
+            }
+        }
     } else {
+        /* This will need modifications of the loading code as well - not handled right now */
+        if(((IWineD3DVertexDeclarationImpl *)device->stateBlock->vertexDecl)->half_float_conv_needed) {
+            FIXME("Implement half float fixup with fixed function vertex processing\n");
+        }
+
         /* we need a copy because we modify some params */
         memcpy(&strided, &device->strided_streams, sizeof(strided));
 
@@ -337,9 +438,9 @@ static void     WINAPI IWineD3DVertexBufferImpl_PreLoad(IWineD3DVertexBuffer *if
     IWineD3DVertexBufferImpl *This = (IWineD3DVertexBufferImpl *) iface;
     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
     BYTE *data;
-    UINT start = 0, end = 0, stride = 0;
+    UINT start = 0, end = 0, stride = 0, vertices;
     BOOL declChanged = FALSE;
-    int i;
+    int i, j;
     TRACE("(%p)->()\n", This);
 
     if(This->Flags & VBFLAG_LOAD) {
@@ -391,6 +492,7 @@ static void     WINAPI IWineD3DVertexBufferImpl_PreLoad(IWineD3DVertexBuffer *if
             checkGLcall("glDeleteBuffersARB");
             LEAVE_GL();
             This->vbo = 0;
+            HeapFree(GetProcessHeap(), 0, This->conv_shift);
 
             /* The stream source state handler might have read the memory of the vertex buffer already
              * and got the memory in the vbo which is not valid any longer. Dirtify the stream source
@@ -451,16 +553,80 @@ static void     WINAPI IWineD3DVertexBufferImpl_PreLoad(IWineD3DVertexBuffer *if
     /* OK, we have the original data from the app, the description of the buffer and the dirty area.
      * so convert the stuff
      */
-    data = HeapAlloc(GetProcessHeap(), 0, end-start);
-    if(!data) {
-        ERR("Out of memory\n");
-        return;
-    }
-    memcpy(data, This->resource.allocatedMemory + start, end - start);
-
     if(This->last_was_vshader) {
-        /* TODO: Implement conversion for FLOAT16_2 and FLOAT16_4 */
+        TRACE("vertex-shadered conversion\n");
+        /* TODO: Improve that */
+        for(i = 0; i < MAX_ATTRIBS; i++) {
+            if(This->strided.u.input[i].dwStride) {
+                stride = This->strided.u.input[i].dwStride;
+            }
+        }
+        TRACE("Found input stride %d, output stride %d\n", stride, This->conv_stride);
+        /* For now reconvert the entire buffer */
+        start = 0;
+        end = This->resource.size;
+
+        vertices = This->resource.size / stride;
+        TRACE("%d vertices in buffer\n", vertices);
+        if(This->vbo_size != vertices * This->conv_stride) {
+            TRACE("Old size %d, creating new size %d\n", This->vbo_size, vertices * This->conv_stride);
+            ENTER_GL();
+            GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
+            checkGLcall("glBindBufferARB");
+            GL_EXTCALL(glBufferDataARB(GL_ARRAY_BUFFER_ARB, vertices * This->conv_stride, NULL, This->vbo_usage));
+            This->vbo_size = vertices * This->conv_stride;
+            checkGLcall("glBufferDataARB");
+            LEAVE_GL();
+        }
+        data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, vertices * This->conv_stride);
+        if(!data) {
+            ERR("Out of memory\n");
+            return;
+        }
+
+        /* Now for each vertex in the buffer */
+        for(i = 0; i < vertices; i++) {
+            /* Copy the vertex over, taking the shifts into account */
+            for(j = 0; j < stride; j++) {
+                data[This->conv_stride * i + j + This->conv_shift[j]] = This->resource.allocatedMemory[i * stride + j];
+            }
+            /* And convert FLOAT16s */
+            for(j = 0; j < MAX_ATTRIBS; j++) {
+                DWORD_PTR offset = (DWORD_PTR) This->strided.u.input[j].lpData;
+                float *dest = (float *) (&data[This->conv_stride * i + offset + This->conv_shift[offset]]);
+                WORD *in = (WORD *) (&This->resource.allocatedMemory[i * stride + offset]);
+
+                switch(This->strided.u.input[j].dwType) {
+                    case WINED3DDECLTYPE_FLOAT16_4:
+                        dest[3] = float_16_to_32(in + 3);
+                        dest[2] = float_16_to_32(in + 2);
+                        /* drop through */
+                    case WINED3DDECLTYPE_FLOAT16_2:
+                        dest[1] = float_16_to_32(in + 1);
+                        dest[0] = float_16_to_32(in + 0);
+                        break;
+                    default:
+                        break;
+                }
+            }
+        }
+        if(!device->isInDraw) {
+            ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
+        }
+        ENTER_GL();
+        GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
+        checkGLcall("glBindBufferARB");
+        GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, This->vbo_size, data));
+        checkGLcall("glBufferSubDataARB");
+        LEAVE_GL();
     } else {
+        data = HeapAlloc(GetProcessHeap(), 0, end-start);
+        if(!data) {
+            ERR("Out of memory\n");
+            return;
+        }
+        memcpy(data, This->resource.allocatedMemory + start, end - start);
+
         if     (This->strided.u.s.position.dwStride)        stride = This->strided.u.s.position.dwStride;
         else if(This->strided.u.s.specular.dwStride)        stride = This->strided.u.s.specular.dwStride;
         else if(This->strided.u.s.diffuse.dwStride)         stride = This->strided.u.s.diffuse.dwStride;
@@ -498,18 +664,17 @@ static void     WINAPI IWineD3DVertexBufferImpl_PreLoad(IWineD3DVertexBuffer *if
             CONVERT_D3DCOLOR_ATTRIB(texCoords[7]);
 #undef CONVERT_D3DCOLOR_ATTRIB
         }
+        if(!device->isInDraw) {
+            ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
+        }
+        ENTER_GL();
+        GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
+        checkGLcall("glBindBufferARB");
+        GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, start, end - start, data));
+        checkGLcall("glBufferSubDataARB");
+        LEAVE_GL();
     }
 
-    if(!device->isInDraw) {
-        ActivateContext(device, device->lastActiveRenderTarget, CTXUSAGE_RESOURCELOAD);
-    }
-    ENTER_GL();
-    GL_EXTCALL(glBindBufferARB(GL_ARRAY_BUFFER_ARB, This->vbo));
-    checkGLcall("glBindBufferARB");
-    GL_EXTCALL(glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, start, end - start, data));
-    checkGLcall("glBufferSubDataARB");
-    LEAVE_GL();
-
     HeapFree(GetProcessHeap(), 0, data);
 }
 

dlls/wined3d/wined3d_private.h

@@ -121,6 +121,24 @@ void init_type_lookup(WineD3D_GL_Info *gl_info);
 #define WINED3D_ATR_NORMALIZED(type)    GLINFO_LOCATION.glTypeLookup[type].normalized
 #define WINED3D_ATR_TYPESIZE(type)      GLINFO_LOCATION.glTypeLookup[type].typesize
 
+/* See GL_NV_half_float for reference */
+static inline float float_16_to_32(const unsigned short *in) {
+    const unsigned short s = ((*in) & 0x8000);
+    const unsigned short e = ((*in) & 0x7C00) >> 10;
+    const unsigned short m = (*in) & 0x3FF;
+    const float sgn = (s ? -1.0 : 1.0);
+
+    if(e == 0) {
+        if(m == 0) return sgn * 0.0; /* +0.0 or -0.0 */
+        else return sgn * pow(2, -14.0) * ( (float) m / 1024.0);
+    } else if(e < 31) {
+        return sgn * pow(2, (float) e-15.0) * (1.0 + ((float) m / 1024.0));
+    } else {
+        if(m == 0) return sgn / 0.0; /* +INF / -INF */
+        else return 0.0 / 0.0; /* NAN */
+    }
+}
+
 /**
  * Settings 
  */
@@ -826,6 +844,8 @@ typedef struct IWineD3DVertexBufferImpl
     GLuint                    vbo;
     BYTE                      Flags;
     LONG                      bindCount;
+    LONG                      vbo_size;
+    GLenum                    vbo_usage;
 
     UINT                      dirtystart, dirtyend;
     LONG                      lockcount;
@@ -835,6 +855,10 @@ typedef struct IWineD3DVertexBufferImpl
     WineDirect3DVertexStridedData strided;
     BOOL                      last_was_vshader;
     BOOL                      last_was_converted;
+
+    /* Extra load offsets, for FLOAT16 conversion */
+    DWORD                     *conv_shift;
+    DWORD                     conv_stride;
 } IWineD3DVertexBufferImpl;
 
 extern const IWineD3DVertexBufferVtbl IWineD3DVertexBuffer_Vtbl;