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   1 /*
   2  * shaders implementation
   3  *
   4  * Copyright 2002-2003 Jason Edmeades
   5  * Copyright 2002-2003 Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2005 Oliver Stieber
   8  * Copyright 2006 Ivan Gyurdiev
   9  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
  10  * Copyright 2009 Henri Verbeet for CodeWeavers
  11  *
  12  * This library is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU Lesser General Public
  14  * License as published by the Free Software Foundation; either
  15  * version 2.1 of the License, or (at your option) any later version.
  16  *
  17  * This library is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * Lesser General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public
  23  * License along with this library; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  25  */
  26
  27 #include "config.h"
  28
  29 #include <math.h>
  30 #include <stdio.h>
  31
  32 #include "wined3d_private.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(d3d_shader);
  35
  36 #define GLINFO_LOCATION ((IWineD3DDeviceImpl *)This->baseShader.device)->adapter->gl_info
  37
  38 static void vshader_set_limits(IWineD3DVertexShaderImpl *This)
  39 {
  40     const struct wined3d_gl_info *gl_info = &((IWineD3DDeviceImpl *)This->baseShader.device)->adapter->gl_info;
  41     DWORD shader_version = WINED3D_SHADER_VERSION(This->baseShader.reg_maps.shader_version.major,
  42             This->baseShader.reg_maps.shader_version.minor);
  43
  44     This->baseShader.limits.texcoord = 0;
  45     This->baseShader.limits.attributes = 16;
  46     This->baseShader.limits.packed_input = 0;
  47
  48     switch (shader_version)
  49     {
  50         case WINED3D_SHADER_VERSION(1,0):
  51         case WINED3D_SHADER_VERSION(1,1):
  52             This->baseShader.limits.temporary = 12;
  53             This->baseShader.limits.constant_bool = 0;
  54             This->baseShader.limits.constant_int = 0;
  55             This->baseShader.limits.address = 1;
  56             This->baseShader.limits.packed_output = 0;
  57             This->baseShader.limits.sampler = 0;
  58             This->baseShader.limits.label = 0;
  59             /* TODO: vs_1_1 has a minimum of 96 constants. What happens if a vs_1_1 shader is used
  60              * on a vs_3_0 capable card that has 256 constants? */
  61             This->baseShader.limits.constant_float = min(256, gl_info->max_vshader_constantsF);
  62             break;
  63
  64         case WINED3D_SHADER_VERSION(2,0):
  65         case WINED3D_SHADER_VERSION(2,1):
  66             This->baseShader.limits.temporary = 12;
  67             This->baseShader.limits.constant_bool = 16;
  68             This->baseShader.limits.constant_int = 16;
  69             This->baseShader.limits.address = 1;
  70             This->baseShader.limits.packed_output = 0;
  71             This->baseShader.limits.sampler = 0;
  72             This->baseShader.limits.label = 16;
  73             This->baseShader.limits.constant_float = min(256, gl_info->max_vshader_constantsF);
  74             break;
  75
  76         case WINED3D_SHADER_VERSION(4,0):
  77             FIXME("Using 3.0 limits for 4.0 shader\n");
  78             /* Fall through */
  79
  80         case WINED3D_SHADER_VERSION(3,0):
  81             This->baseShader.limits.temporary = 32;
  82             This->baseShader.limits.constant_bool = 32;
  83             This->baseShader.limits.constant_int = 32;
  84             This->baseShader.limits.address = 1;
  85             This->baseShader.limits.packed_output = 12;
  86             This->baseShader.limits.sampler = 4;
  87             This->baseShader.limits.label = 16; /* FIXME: 2048 */
  88             /* DX10 cards on Windows advertise a d3d9 constant limit of 256 even though they are capable
  89              * of supporting much more(GL drivers advertise 1024). d3d9.dll and d3d8.dll clamp the
  90              * wined3d-advertised maximum. Clamp the constant limit for <= 3.0 shaders to 256.s
  91              * use constant buffers */
  92             This->baseShader.limits.constant_float = min(256, gl_info->max_vshader_constantsF);
  93             break;
  94
  95         default:
  96             This->baseShader.limits.temporary = 12;
  97             This->baseShader.limits.constant_bool = 16;
  98             This->baseShader.limits.constant_int = 16;
  99             This->baseShader.limits.address = 1;
 100             This->baseShader.limits.packed_output = 0;
 101             This->baseShader.limits.sampler = 0;
 102             This->baseShader.limits.label = 16;
 103             This->baseShader.limits.constant_float = min(256, gl_info->max_vshader_constantsF);
 104             FIXME("Unrecognized vertex shader version %u.%u\n",
 105                     This->baseShader.reg_maps.shader_version.major,
 106                     This->baseShader.reg_maps.shader_version.minor);
 107     }
 108 }
 109
 110 static BOOL match_usage(BYTE usage1, BYTE usage_idx1, BYTE usage2, BYTE usage_idx2) {
 111     if (usage_idx1 != usage_idx2) return FALSE;
 112     if (usage1 == usage2) return TRUE;
 113     if (usage1 == WINED3DDECLUSAGE_POSITION && usage2 == WINED3DDECLUSAGE_POSITIONT) return TRUE;
 114     if (usage2 == WINED3DDECLUSAGE_POSITION && usage1 == WINED3DDECLUSAGE_POSITIONT) return TRUE;
 115
 116     return FALSE;
 117 }
 118
 119 BOOL vshader_get_input(IWineD3DVertexShader* iface, BYTE usage_req, BYTE usage_idx_req, unsigned int *regnum)
 120 {
 121     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 122     WORD map = This->baseShader.reg_maps.input_registers;
 123     unsigned int i;
 124
 125     for (i = 0; map; map >>= 1, ++i)
 126     {
 127         if (!(map & 1)) continue;
 128
 129         if (match_usage(This->attributes[i].usage,
 130                 This->attributes[i].usage_idx, usage_req, usage_idx_req))
 131         {
 132             *regnum = i;
 133             return TRUE;
 134         }
 135     }
 136     return FALSE;
 137 }
 138
 139 /* *******************************************
 140    IWineD3DVertexShader IUnknown parts follow
 141    ******************************************* */
 142 static HRESULT  WINAPI IWineD3DVertexShaderImpl_QueryInterface(IWineD3DVertexShader *iface, REFIID riid, LPVOID *ppobj) {
 143     TRACE("iface %p, riid %s, ppobj %p\n", iface, debugstr_guid(riid), ppobj);
 144
 145     if (IsEqualGUID(riid, &IID_IWineD3DVertexShader)
 146             || IsEqualGUID(riid, &IID_IWineD3DBaseShader)
 147             || IsEqualGUID(riid, &IID_IWineD3DBase)
 148             || IsEqualGUID(riid, &IID_IUnknown))
 149     {
 150         IUnknown_AddRef(iface);
 151         *ppobj = iface;
 152         return S_OK;
 153     }
 154
 155     WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));
 156
 157     *ppobj = NULL;
 158     return E_NOINTERFACE;
 159 }
 160
 161 static ULONG  WINAPI IWineD3DVertexShaderImpl_AddRef(IWineD3DVertexShader *iface) {
 162     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 163     ULONG refcount = InterlockedIncrement(&This->baseShader.ref);
 164
 165     TRACE("%p increasing refcount to %u\n", This, refcount);
 166
 167     return refcount;
 168 }
 169
 170 static ULONG WINAPI IWineD3DVertexShaderImpl_Release(IWineD3DVertexShader *iface) {
 171     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 172     ULONG refcount = InterlockedDecrement(&This->baseShader.ref);
 173
 174     TRACE("%p decreasing refcount to %u\n", This, refcount);
 175
 176     if (!refcount)
 177     {
 178         shader_cleanup((IWineD3DBaseShader *)iface);
 179         This->baseShader.parent_ops->wined3d_object_destroyed(This->baseShader.parent);
 180         HeapFree(GetProcessHeap(), 0, This);
 181     }
 182
 183     return refcount;
 184 }
 185
 186 /* *******************************************
 187    IWineD3DVertexShader IWineD3DVertexShader parts follow
 188    ******************************************* */
 189
 190 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetParent(IWineD3DVertexShader *iface, IUnknown** parent){
 191     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 192
 193     *parent = This->baseShader.parent;
 194     IUnknown_AddRef(*parent);
 195     TRACE("(%p) : returning %p\n", This, *parent);
 196     return WINED3D_OK;
 197 }
 198
 199 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetDevice(IWineD3DVertexShader* iface, IWineD3DDevice **pDevice){
 200     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)iface;
 201     IWineD3DDevice_AddRef(This->baseShader.device);
 202     *pDevice = This->baseShader.device;
 203     TRACE("(%p) returning %p\n", This, *pDevice);
 204     return WINED3D_OK;
 205 }
 206
 207 static HRESULT WINAPI IWineD3DVertexShaderImpl_GetFunction(IWineD3DVertexShader* impl, VOID* pData, UINT* pSizeOfData) {
 208     IWineD3DVertexShaderImpl *This = (IWineD3DVertexShaderImpl *)impl;
 209     TRACE("(%p) : pData(%p), pSizeOfData(%p)\n", This, pData, pSizeOfData);
 210
 211     if (NULL == pData) {
 212         *pSizeOfData = This->baseShader.functionLength;
 213         return WINED3D_OK;
 214     }
 215     if (*pSizeOfData < This->baseShader.functionLength) {
 216         /* MSDN claims (for d3d8 at least) that if *pSizeOfData is smaller
 217          * than the required size we should write the required size and
 218          * return D3DERR_MOREDATA. That's not actually true. */
 219         return WINED3DERR_INVALIDCALL;
 220     }
 221
 222     TRACE("(%p) : GetFunction copying to %p\n", This, pData);
 223     memcpy(pData, This->baseShader.function, This->baseShader.functionLength);
 224
 225     return WINED3D_OK;
 226 }
 227
 228 static HRESULT vertexshader_set_function(IWineD3DVertexShaderImpl *shader,
 229         const DWORD *byte_code, const struct wined3d_shader_signature *output_signature)
 230 {
 231     IWineD3DDeviceImpl *device = (IWineD3DDeviceImpl *)shader->baseShader.device;
 232     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 233     const struct wined3d_shader_frontend *fe;
 234     unsigned int i;
 235     HRESULT hr;
 236     shader_reg_maps *reg_maps = &shader->baseShader.reg_maps;
 237
 238     TRACE("shader %p, byte_code %p, output_signature %p.\n", shader, byte_code, output_signature);
 239
 240     fe = shader_select_frontend(*byte_code);
 241     if (!fe)
 242     {
 243         FIXME("Unable to find frontend for shader.\n");
 244         return WINED3DERR_INVALIDCALL;
 245     }
 246     shader->baseShader.frontend = fe;
 247     shader->baseShader.frontend_data = fe->shader_init(byte_code, output_signature);
 248     if (!shader->baseShader.frontend_data)
 249     {
 250         FIXME("Failed to initialize frontend.\n");
 251         return WINED3DERR_INVALIDCALL;
 252     }
 253
 254     /* First pass: trace shader */
 255     if (TRACE_ON(d3d_shader)) shader_trace_init(fe, shader->baseShader.frontend_data, byte_code);
 256
 257     /* Initialize immediate constant lists */
 258     list_init(&shader->baseShader.constantsF);
 259     list_init(&shader->baseShader.constantsB);
 260     list_init(&shader->baseShader.constantsI);
 261
 262     /* Second pass: figure out registers used, semantics, etc.. */
 263     shader->min_rel_offset = gl_info->max_vshader_constantsF;
 264     shader->max_rel_offset = 0;
 265     hr = shader_get_registers_used((IWineD3DBaseShader *)shader, fe,
 266             reg_maps, shader->attributes, NULL, shader->output_signature,
 267             byte_code, gl_info->max_vshader_constantsF);
 268     if (hr != WINED3D_OK) return hr;
 269
 270     if (output_signature)
 271     {
 272         for (i = 0; i < output_signature->element_count; ++i)
 273         {
 274             struct wined3d_shader_signature_element *e = &output_signature->elements[i];
 275             reg_maps->output_registers |= 1 << e->register_idx;
 276             shader->output_signature[e->register_idx] = *e;
 277         }
 278     }
 279
 280     vshader_set_limits(shader);
 281
 282     if (device->vs_selected_mode == SHADER_ARB
 283             && (gl_info->quirks & WINED3D_QUIRK_ARB_VS_OFFSET_LIMIT)
 284             && shader->min_rel_offset <= shader->max_rel_offset)
 285     {
 286         if (shader->max_rel_offset - shader->min_rel_offset > 127)
 287         {
 288             FIXME("The difference between the minimum and maximum relative offset is > 127\n");
 289             FIXME("Which this OpenGL implementation does not support. Try using GLSL\n");
 290             FIXME("Min: %d, Max: %d\n", shader->min_rel_offset, shader->max_rel_offset);
 291         }
 292         else if (shader->max_rel_offset - shader->min_rel_offset > 63)
 293         {
 294             shader->rel_offset = shader->min_rel_offset + 63;
 295         }
 296         else if (shader->max_rel_offset > 63)
 297         {
 298             shader->rel_offset = shader->min_rel_offset;
 299         }
 300         else
 301         {
 302             shader->rel_offset = 0;
 303         }
 304     }
 305     shader->baseShader.load_local_constsF = shader->baseShader.reg_maps.usesrelconstF
 306             && !list_empty(&shader->baseShader.constantsF);
 307
 308     /* copy the function ... because it will certainly be released by application */
 309     shader->baseShader.function = HeapAlloc(GetProcessHeap(), 0, shader->baseShader.functionLength);
 310     if (!shader->baseShader.function) return E_OUTOFMEMORY;
 311     memcpy(shader->baseShader.function, byte_code, shader->baseShader.functionLength);
 312
 313     return WINED3D_OK;
 314 }
 315
 316 /* Set local constants for d3d8 shaders */
 317 static HRESULT WINAPI IWIneD3DVertexShaderImpl_SetLocalConstantsF(IWineD3DVertexShader *iface,
 318         UINT start_idx, const float *src_data, UINT count) {
 319     IWineD3DVertexShaderImpl *This =(IWineD3DVertexShaderImpl *)iface;
 320     const struct wined3d_gl_info *gl_info = &((IWineD3DDeviceImpl *)This->baseShader.device)->adapter->gl_info;
 321     UINT i, end_idx;
 322
 323     TRACE("(%p) : start_idx %u, src_data %p, count %u\n", This, start_idx, src_data, count);
 324
 325     end_idx = start_idx + count;
 326     if (end_idx > gl_info->max_vshader_constantsF)
 327     {
 328         WARN("end_idx %u > float constants limit %u\n", end_idx, gl_info->max_vshader_constantsF);
 329         end_idx = gl_info->max_vshader_constantsF;
 330     }
 331
 332     for (i = start_idx; i < end_idx; ++i) {
 333         local_constant* lconst = HeapAlloc(GetProcessHeap(), 0, sizeof(local_constant));
 334         if (!lconst) return E_OUTOFMEMORY;
 335
 336         lconst->idx = i;
 337         memcpy(lconst->value, src_data + (i - start_idx) * 4 /* 4 components */, 4 * sizeof(float));
 338         list_add_head(&This->baseShader.constantsF, &lconst->entry);
 339     }
 340
 341     return WINED3D_OK;
 342 }
 343
 344 static const IWineD3DVertexShaderVtbl IWineD3DVertexShader_Vtbl =
 345 {
 346     /*** IUnknown methods ***/
 347     IWineD3DVertexShaderImpl_QueryInterface,
 348     IWineD3DVertexShaderImpl_AddRef,
 349     IWineD3DVertexShaderImpl_Release,
 350     /*** IWineD3DBase methods ***/
 351     IWineD3DVertexShaderImpl_GetParent,
 352     /*** IWineD3DBaseShader methods ***/
 353     IWineD3DVertexShaderImpl_GetDevice,
 354     IWineD3DVertexShaderImpl_GetFunction,
 355     /*** IWineD3DVertexShader methods ***/
 356     IWIneD3DVertexShaderImpl_SetLocalConstantsF
 357 };
 358
 359 void find_vs_compile_args(IWineD3DVertexShaderImpl *shader, IWineD3DStateBlockImpl *stateblock, struct vs_compile_args *args) {
 360     args->fog_src = stateblock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE ? VS_FOG_COORD : VS_FOG_Z;
 361     args->swizzle_map = ((IWineD3DDeviceImpl *)shader->baseShader.device)->strided_streams.swizzle_map;
 362 }
 363
 364 HRESULT vertexshader_init(IWineD3DVertexShaderImpl *shader, IWineD3DDeviceImpl *device,
 365         const DWORD *byte_code, const struct wined3d_shader_signature *output_signature,
 366         IUnknown *parent, const struct wined3d_parent_ops *parent_ops)
 367 {
 368     HRESULT hr;
 369
 370     if (!byte_code) return WINED3DERR_INVALIDCALL;
 371
 372     shader->lpVtbl = &IWineD3DVertexShader_Vtbl;
 373     shader_init(&shader->baseShader, device, parent, parent_ops);
 374
 375     hr = vertexshader_set_function(shader, byte_code, output_signature);
 376     if (FAILED(hr))
 377     {
 378         WARN("Failed to set function, hr %#x.\n", hr);
 379         shader_cleanup((IWineD3DBaseShader *)shader);
 380         return hr;
 381     }
 382
 383     return WINED3D_OK;
 384 }